Attachment #185278 for bug #331467

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/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency;

import org.eclipse.linuxtools.lttng.ui.views.latency.handlers.ViewHandler;
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.AbstractMouseListener;
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.AbstractPaintListener;
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.ZoomListener;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;


/**
 * Abstract view.
 * 
 * @author Philippe Sawicki
 */
public abstract class AbstractView extends Canvas {
	
	/**
	 * Parent composite node.
	 */
	protected Composite parent_;

	/**
	 * View handler (retrieves the information).
	 */
	protected ViewHandler viewHandler_ = null;
	
	/**
	 * Horizontal axis min value.
	 */
	protected long xMin_;
	/**
	 * Horizontal axis max value.
	 */
	protected long xMax_;
	/**
	 * Vertical axis min value.
	 */
	protected long yMin_;
	/**
	 * Vertical axis max value.
	 */
	protected long yMax_;
	
	/**
	 * Paint listener.
	 */
	protected AbstractPaintListener paintListener_;
	
	/**
	 * Zoom listener, to zoom in and out of a graph using the scroll wheel.
	 */
	protected ZoomListener zoomListener_;
	
	/**
	 * Tooltip listener.
	 */
	protected AbstractMouseListener mouseListener_;
	
	
	/**
	 * Constructor.
	 * @param parent The parent composite node.
	 * @param style The SWT style to use to render the view.
	 */
	public AbstractView(Composite parent, int style) {
		super(parent, style);
		
		parent_ = parent;
	}
	
	/**
	 * Sets the min value of the horizontal axis.
	 * @param xMin The min value of the horizontal axis.
	 */
	public void setXMin(long xMin) {
		xMin_ = xMin;
	}
	
	/**
	 * Returns the min value of the horizontal axis.
	 * @return The min value of the horizontal axis.
	 */
	public long getXMin() {
		return xMin_;
	}
	
	/**
	 * Sets the max value of the horizontal axis.
	 * @param xMax The max value of the horizontal axis.
	 */
	public void setXMax(long xMax) {
		xMax_ = xMax;
	}
	
	/**
	 * Returns the max value of the horizontal axis.
	 * @return The max value of the horizontal axis.
	 */
	public long getXMax() {
		return xMax_;
	}
	
	/**
	 * Sets the min value of the vertical axis.
	 * @param yMin The min value of the vertical axis.
	 */
	public void setYMin(long yMin) {
		yMin_ = yMin;
	}
	/**
	 * Returns the min value of the vertical axis.
	 * @return The min value of the vertical axis.
	 */
	public long getYMin() {
		return yMin_;
	}
	
	/**
	 * Sets the max value of the vertical axis.
	 * @param yMax The max value of the vertical axis.
	 */
	public void setYMax(long yMax) {
		yMax_ = yMax;
	}
	/**
	 * Returns the max value of the vertical axis.
	 * @return The max value of the vertical axis.
	 */
	public long getYMax() {
		return yMax_;
	}

	/**
	 * Adds a point to the view.
	 * @param point The point to add to the view.
	 */
	public abstract void addPoint(int point);
	
	/**
	 * Adds a buffer of points to the view.
	 * @param points The buffer of points to add to the view.
	 * @param nbPoints The number of points in the buffer.
	 */
	public abstract void addPoints(ChartPoint[] points, int nbPoints);
	
	/**
	 * Clears the view.
	 */
	public abstract void clear();
	
	/**
	 * Clears the background of the view but keeps min and max values.
	 */
	public abstract void clearBackground();
	
	/**
	 * Clears the points buffer, if any exists.
	 */
	public void clearPoints() {
		paintListener_.clearPoints();
	}
	
	/**
	 * Sets the view handler.
	 * @param viewHandler The view handler.
	 */
	public void setViewHandler(ViewHandler viewHandler) {
		viewHandler_ = viewHandler;
	}
	
	/**
	 * Draw horizontal label each "nbTicks" ticks.
	 * @param nbTicks The draw interval.
	 */
	public void drawLabelEachNTicks(int nbTicks) {
		paintListener_.drawLabelEachNTicks(nbTicks);
	}
	
	/**
	 * Sets the title of the graph.
	 * @param graphTitle The title of the graph.
	 */
	public void setGraphTitle(String graphTitle) {
		paintListener_.setGraphTitle(graphTitle);
	}
	
	/**
	 * Sets the horizontal axis label.
	 * @param xLabel The horizontal axis label.
	 * @param offset The horizontal axis draw offset (in pixels).
	 */
	public void setXAxisLabel(String xLabel, int offset) {
		paintListener_.setXAxisLabel(xLabel, offset);
	}

	/**
	 * Sets the vertical axis label.
	 * @param yLabel The vertical axis label.
	 */
	public void setYAxisLabel(String yLabel) {
		paintListener_.setYAxisLabel(yLabel);
	}
	
	/**
	 * Asks for the view to be redrawn, synchronously or asynchronously.
	 * @param asyncRedraw If "true", the view will be redrawn asynchronously, otherwise it will be 
	 * redraw synchronously.
	 */
	public void askForRedraw(boolean asyncRedraw) {
		if (asyncRedraw == true) {
			Display.getDefault().asyncExec(new Runnable() {
				public void run() {
					try {
						redraw();
					} catch (SWTException e) {
						// ...
					}
				}
			});
		} else {
			Display.getDefault().syncExec(new Runnable() {
				public void run() {
					try {
						redraw();
					} catch (SWTException e) {
						// ...
					}
				}
			});
		}
	}
	
	/**
	 * Asks for the view to be redrawn (asynchronously).
	 */
	public void askForRedraw() {
		askForRedraw(true);
	}
	
	/**
	 * Returns the zoom factor for the canvas.
	 * @return The zoom factor for the canvas.
	 */
	public int getZoomFactor() {
		if (zoomListener_ != null) {
			return zoomListener_.getZoomFactor();
		} else {
			return 1;
		}
	}

	/**
	 * Returns the zoom increment for the canvas.
	 * @return The zoom increment for the canvas.
	 */
	public int getZoomIncrement() {
		if (zoomListener_ != null) {
			return zoomListener_.getZoomIncrement();
		} else {
			return 1;
		}
	}
	
	/**
	 * Redraws the title after a zoom to display the new zoom factor.
	 */
	public void redrawTitle() {
		paintListener_.paintGraphTitle();
	}
	
	/**
	 * Removes the view's listeners before disposing of it.
	 */
	public void dispose() {
		try {
			if (paintListener_ != null) {
				removePaintListener(paintListener_);
				paintListener_ = null;
			} 
			if (zoomListener_ != null) {
				removeListener(SWT.MouseWheel, zoomListener_);
				zoomListener_ = null;
			}
			if (mouseListener_ != null) {
				removeListener(SWT.MouseMove, mouseListener_);
				mouseListener_ = null;
			}
		} catch (SWTException e) {
    		// This exception will be thrown if the user closes the view
    		// while it is receiving data from the Analyser.
    		
    		// ...
		}
		
		super.dispose();
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency;


/**
 * Class holding data values to later draw points/bars to the screen.
 * 
 * @author Philippe Sawicki
 */
public class ChartPoint {
	
	/**
	 * Point x-value.
	 */
	private long x_;
	/**
	 * Point y-value.
	 */
	private long y_;
	
	
	/**
	 * Constructor.
	 * @param x The point's x-value.
	 * @param y The point's y-value.
	 */
	public ChartPoint(long x, long y) {
		x_ = x;
		y_ = y;
	}
	
	/**
	 * Constructor.
	 */
	public ChartPoint() {
		this(0L, 0L);
	}
	
	/**
	 * Sets the point's x-value.
	 * @param x The point's x-value.
	 */
	public void setX(long x) {
		x_ = x;
	}
	
	/**
	 * Returns the point's x-value.
	 * @return The point's x-value.
	 */
	public long getX() {
		return x_;
	}
	
	/**
	 * Sets the point's y-value.
	 * @param y The point's y-value.
	 */
	public void setY(long y) {
		y_ = y;
	}
	
	/**
	 * Returns the point's y-value.
	 * @return The point's y-value.
	 */
	public long getY() {
		return y_;
	}
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency;

import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.GraphPaintListener;
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.TimePointerListener;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;


/**
 * Graph view.
 * 
 * @author Philippe Sawicki
 */
public class GraphView extends AbstractView {

	/**
	 * Constructor.
	 * @param parent The parent composite node.
	 * @param style The SWT style to use to render the view.
	 */
	public GraphView(Composite parent, int style) {
		super(parent, style);
		
		// Register the paint listener
		paintListener_ = new GraphPaintListener(this);
		addPaintListener(paintListener_);
		
		// Register the mouse click listener
		mouseListener_ = new TimePointerListener(this, (GraphPaintListener)paintListener_);
		addListener(SWT.MouseMove, mouseListener_); 
	}

	@Override
	public void addPoint(int point) {
		if (Config.PRINT_GRAPH_VIEW_STATUS)
			System.out.println("GRAPH : ADDING 1 POINT");
	}
	
	@Override
	public void addPoints(ChartPoint[] points, int nbPoints) {
		if (Config.PRINT_GRAPH_VIEW_STATUS)
			System.out.println("GRAPH : ADDING " + nbPoints + " POINTS");
		paintListener_.addPoints(points, nbPoints);
	}

	@Override
	public void clear() {
		xMin_ = 0L;
		xMax_ = 0L;
		
		yMin_ = 0L;
		yMax_ = 0L;
		
		paintListener_.clear();
	}
	
	@Override
	public void clearBackground() {
		paintListener_.clear();
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency;

import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.HistogramPaintListener;
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.TooltipListener;
import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.ZoomListener;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;


/**
 * Histogram view.
 * 
 * @author Philippe Sawicki
 */
public class HistogramView extends AbstractView {
	
	/**
	 * Usable width for data plotting.
	 */
	protected int usableWidth_;
	
	/**
	 * Standard latencies table.
	 */
	protected double[] standardLatencies_;
	

	/**
	 * Constructor.
	 * @param parent The parent composite node.
	 * @param style The SWT style to use to render the view.
	 */
	public HistogramView(Composite parent, int style) {
		super(parent, style);
		
		// Register the paint listener
		paintListener_ = new HistogramPaintListener(this);
		addPaintListener(paintListener_);
		
		// Register the zoom listener
		zoomListener_ = new ZoomListener(this);
		addListener(SWT.MouseWheel, zoomListener_);
		
		// Register the mouse click listener
		mouseListener_ = new TooltipListener(this, (HistogramPaintListener)paintListener_);
		addListener(SWT.MouseMove, mouseListener_); 
	}

	@Override
	public void addPoint(int point) {
		if (Config.PRINT_HISTO_VIEW_STATUS)
			System.out.println("HISTOGRAM : ADDING 1 POINT");
	}
	
	@Override
	public void addPoints(ChartPoint[] points, int nbPoints) {
		if (Config.PRINT_HISTO_VIEW_STATUS)
			System.out.println("HISTOGRAM : ADDING " + nbPoints + " POINTS");
		paintListener_.addPoints(points, nbPoints);
	}

	@Override
	public void clear() {
		xMin_ = 0L;
		xMax_ = 0L;
		
		yMin_ = 0L;
		yMax_ = 0L;

		paintListener_.clear();
	}
	
	@Override
	public void clearBackground() {
		paintListener_.clear();
	}
	
	/**
	 * Returns the number of bars available.
	 * @return The number of bars available.
	 */
	public int getNumberOfBars() {
		usableWidth_ = getClientArea().width - 2*Config.GRAPH_PADDING;
		return usableWidth_ / Config.HISTOGRAM_BAR_WIDTH;
	}
	
	/**
	 * Notify the view handler of the number of bars available.
	 */
	public void notifyNumberOfBars() {
		viewHandler_.notifyNumberOfBars( getNumberOfBars() );
	}
	
	/**
	 * Sets the standard latencies table.
	 * @param standardLatencies The standard latencies table.
	 */
	public void setStandardLatencies(double[] standardLatencies) {
		standardLatencies_ = standardLatencies;
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.analysis.InterfaceMediator;
import org.eclipse.linuxtools.lttng.event.LttngEvent;
import org.eclipse.linuxtools.lttng.ui.views.latency.dialogs.AddDialog;
import org.eclipse.linuxtools.lttng.ui.views.latency.dialogs.DeleteDialog;
import org.eclipse.linuxtools.lttng.ui.views.latency.dialogs.ListDialog;
import org.eclipse.linuxtools.tmf.event.TmfEvent;
import org.eclipse.linuxtools.tmf.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
import org.eclipse.linuxtools.tmf.experiment.TmfExperiment;
import org.eclipse.linuxtools.tmf.signal.TmfExperimentSelectedSignal;
import org.eclipse.linuxtools.tmf.signal.TmfRangeSynchSignal;
import org.eclipse.linuxtools.tmf.signal.TmfSignalHandler;
import org.eclipse.linuxtools.tmf.signal.TmfTimeSynchSignal;
import org.eclipse.linuxtools.tmf.trace.ITmfTrace;
import org.eclipse.linuxtools.tmf.trace.TmfContext;
import org.eclipse.linuxtools.tmf.ui.views.TmfView;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.plugin.AbstractUIPlugin;


/**
 * TmfView displaying the latency views (i.e. the two latency charts).
 * 
 * @author Philippe Sawicki
 */
public class LatencyView extends TmfView {

	/**
	 * The view's unique ID.
	 */
    public static final String ID = "org.eclipse.linuxtools.lttng.ui.views.latency.LatencyView";
    
    /**
     * A reference to the currently selected experiment.
     */
    protected static TmfExperiment<LttngEvent> experiment_ = null;
    
    /**
     * Parent composite.
     */
    protected static Composite parent_;
    
    /**
     * Graph view.
     */
    protected GraphView graphView_;
    /**
     * Histogram view.
     */
    protected HistogramView histogramView_;
    
    /**
     * Action executed when the user wants to see the list of matching events.
     */
    protected Action listMatchingEvents_;
    /**
     * Action executed when the user wants to add matching events.
     */
    protected Action addMatchingEvents_;
    /**
     * Action executed when the user wants to delete matching events.
     */
    protected Action deleteMatchingEvents_;
    /**
     * Action executed when the user wants to increase the width of the histogram bars.
     */
    protected Action increaseBarWidth_;
    /**
     * Action executed when the user wants to decrease the width of the histogram bars.
     */
    protected Action decreaseBarWidth_;
    
    /**
     * The current histogram window time range.
     */
    protected static TmfTimeRange timeRange_ = null;
    
    /**
     * A reference to the last TmfRangeSynchSignal recorded.
     */
    protected static TmfRangeSynchSignal rangeSyncSignal_;
    /**
     * A reference to the last TmfExperimentSelectedSignal<TmfEvent> recorded.
     */
    protected TmfExperimentSelectedSignal<TmfEvent> experimentSelectedSignal_;
    
    
    
    /**
     * Constructor.
     */
    public LatencyView() {
    	super("LatencyView");
    }
    
	/**
	 * Create the UI controls of this view.
	 * 
	 * @param parent The composite parent of this view.
	 */
	@Override
	public void createPartControl(Composite parent) {
		// Save the parent
		parent_ = parent;
		
		makeActions();
		contributeToActionBars();
		
		// Add a control listener to handle the view resize events (to redraw the canvas)
		parent_.addControlListener(new ControlListener() {
			@Override
			public void controlMoved(ControlEvent event) {
				resendSignalsIfNeeded();
			}

			@Override
			public void controlResized(ControlEvent event) {
				resendSignalsIfNeeded();
			}
			
			/**
			 * Resend trace signals if the resize or the move forced the views
			 * to be cleared, so that after the view is resized/moved, the events
			 * from the trace start being plotted.
			 */
			protected void resendSignalsIfNeeded() {
				if (rangeSyncSignal_ != null) {
					synchToTimeRange(rangeSyncSignal_);
				} else if (experimentSelectedSignal_ != null) { 
					experimentSelected(experimentSelectedSignal_);
				} else {
					graphView_.clear();
					histogramView_.clear();
				}
			}
		});
		
		
		
		/////////////////////////////////////////////////////////////////////////////////////
		// Layout for the whole view, other elements will be in a child composite of this one 
		// Contains :
		// 		Composite layoutSelectionWindow
		//		Composite layoutTimesSpinner
		//		Composite layoutExperimentHistogram
		/////////////////////////////////////////////////////////////////////////////////////
		Composite layoutFullView = new Composite(parent_, SWT.FILL);
		FillLayout gridFullView = new FillLayout();
		gridFullView.marginHeight = 0;
		gridFullView.marginWidth = 0;
		layoutFullView.setLayout(gridFullView);
    	
    	// Create the graph views
    	graphView_ = new GraphView(layoutFullView, SWT.DOUBLE_BUFFERED);
    	graphView_.drawLabelEachNTicks(2);
    	graphView_.setGraphTitle(Messages.getString("LatencyView.Graphs.Graph.Title"));
    	graphView_.setXAxisLabel(Messages.getString("LatencyView.Graphs.Graph.XAxisLabel"), 40);
    	graphView_.setYAxisLabel(Messages.getString("LatencyView.Graphs.Graph.YAxisLabel"));
    	
    	histogramView_ = new HistogramView(layoutFullView, SWT.DOUBLE_BUFFERED);
    	histogramView_.setGraphTitle(Messages.getString("LatencyView.Graphs.Histogram.Title"));
    	histogramView_.setXAxisLabel(Messages.getString("LatencyView.Graphs.Histogram.XAxisLabel"), 55);
    	histogramView_.setYAxisLabel(Messages.getString("LatencyView.Graphs.Histogram.YAxisLabel"));
    	
    	// Register the graph views to the InterfaceMediator
    	InterfaceMediator.getInstance().registerGraphView(graphView_);
    	InterfaceMediator.getInstance().registerHistogramView(histogramView_);
	}
	
    @Override
	public String toString() {
    	return "[LatencyView]";
    }
    
    /**
     * Returns the currently selected experiment.
     * @return The currently selected experiment.
     */
    public static TmfExperiment<LttngEvent> getExperiment() {
    	return (TmfExperiment<LttngEvent>) experiment_;
    }
    

    // ------------------------------------------------------------------------
    // Signal handlers
	// ------------------------------------------------------------------------
    
	@SuppressWarnings("unchecked")
    @TmfSignalHandler
    public void experimentSelected(TmfExperimentSelectedSignal<TmfEvent> signal) {
		experimentSelectedSignal_ = signal;
		
		// Clear the views
		graphView_.clear();
		histogramView_.clear();
		
    	histogramView_.notifyNumberOfBars();
    	
		if (parent_ != null) {
	        // Update the trace reference
			experiment_ = (TmfExperiment<LttngEvent>) experimentSelectedSignal_.getExperiment();
			
			sendAnalysisRequest();
		}
    }
	
	/**
	 * Ask the analyser to compute the latencies for the current experiment.
	 */
	public static void sendAnalysisRequest() {
		if (parent_ != null) {
			Display display = parent_.getDisplay();
			display.asyncExec(new Runnable() {
				public void run() {
					new Thread() {
						public void run() {
							try {
								TmfTimestamp startTime = getExperimentTimeRange().getStartTime();
								TmfTimestamp endTime   = new TmfTimestamp(startTime.getValue() + org.eclipse.linuxtools.lttng.ui.views.histogram.HistogramView.getDEFAULT_WINDOW_SIZE());
								timeRange_ = new TmfTimeRange(startTime, endTime);
								
						        InterfaceMediator.getInstance().analyseLatencyForAllEvents();
							} catch (NullPointerException e) {
								// Thrown when the user has not selected an experiment yet but reset the latency pairs to 
								// default in the dialog.
							}
						}
					}.start();
				}
			});
		}
	}

	/**
	 * Called when the LatencyView is closed: disposes of the canvas and 
	 * unregisters them from the InterfaceMediator.
	 */
	@Override
	public void dispose() {
		graphView_.dispose();
		histogramView_.dispose();
		
		InterfaceMediator.getInstance().unregisterViews();
		
		super.dispose();
	}
	
	
	
	
	
	/**
     * Method called when synchonization is active and that the user select an event.<p>
     * We update the current event timeTextGroup and move the selected window if needed.
     * 
     * @param signal Signal received from the framework. Contain the event.
     */
    @TmfSignalHandler
    public void currentTimeUpdated(TmfTimeSynchSignal signal) {
    	
    }
    
    @TmfSignalHandler
	public void synchToTimeRange(TmfRangeSynchSignal signal) {
    	rangeSyncSignal_ = signal;
    	if (rangeSyncSignal_ != null && rangeSyncSignal_.getSource() != this) {
    		// Erase the graph views
    		graphView_.clear();
    		histogramView_.clear();
    		
    		TmfTimestamp startTime = rangeSyncSignal_.getCurrentRange().getStartTime();
    		TmfTimestamp endTime   = rangeSyncSignal_.getCurrentRange().getEndTime();
    		timeRange_ = new TmfTimeRange(startTime, endTime);
    		
    		InterfaceMediator.getInstance().analyseLatencyForAllEvents();
    	}
	}
    
    
    
    
    
    /**
     * Fills the local pull down menu.
     * @param manager The menu manager.
     */
    private void fillLocalPullDown(IMenuManager manager) {
    	manager.add(new Separator());
    	manager.add(increaseBarWidth_);
    	manager.add(decreaseBarWidth_);
    	manager.add(new Separator());
    	manager.add(listMatchingEvents_);
    	manager.add(addMatchingEvents_);
    	manager.add(deleteMatchingEvents_);
    	manager.add(new Separator());
    }
    
    /**
     * Fills the local toolbar.
     * @param manager The toolbar manager
     */
    private void fillLocalToolBar(IToolBarManager manager) {
    	manager.add(new Separator());
    	manager.add(increaseBarWidth_);
    	manager.add(decreaseBarWidth_);
    	manager.add(new Separator());
    	manager.add(listMatchingEvents_);
    	manager.add(addMatchingEvents_);
    	manager.add(deleteMatchingEvents_);
    	manager.add(new Separator());
    }
    
    /**
     * Creates the actions required by the dialog events.
     */
    private void makeActions() {
    	// Increase the histogram bar width
    	increaseBarWidth_ = new Action() {
    		public void run() {
    			Config.HISTOGRAM_BAR_WIDTH += 5;
    			if (Config.HISTOGRAM_BAR_WIDTH > 300)
    				Config.HISTOGRAM_BAR_WIDTH = 300;
    			histogramView_.notifyNumberOfBars();
    			sendAnalysisRequest();
    		}
    	};
    	String tooltipText = Messages.getString("LatencyView.Action.IncreaseBarWidth.Tooltip");
    	increaseBarWidth_.setText(tooltipText);
    	increaseBarWidth_.setToolTipText(tooltipText);
    	increaseBarWidth_.setImageDescriptor(
    			AbstractUIPlugin.imageDescriptorFromPlugin(
    					Messages.getString("LatencyView.tmf.UI"), 
    					"icons/increasebar_button.gif"));
    	
    	

    	

    	// Decrease the histogram bar width
    	decreaseBarWidth_ = new Action() {
    		public void run() {
    			Config.HISTOGRAM_BAR_WIDTH -= 5;
    			if (Config.HISTOGRAM_BAR_WIDTH < 5)
    				Config.HISTOGRAM_BAR_WIDTH = 5;
    			histogramView_.notifyNumberOfBars();
    			sendAnalysisRequest();
    		}
    	};
    	tooltipText = Messages.getString("LatencyView.Action.DecreaseBarWidth.Tooltip");
    	decreaseBarWidth_.setText(tooltipText);
    	decreaseBarWidth_.setToolTipText(tooltipText);
    	decreaseBarWidth_.setImageDescriptor(
    			AbstractUIPlugin.imageDescriptorFromPlugin(
    					Messages.getString("LatencyView.tmf.UI"), 
    					"icons/decreasebar_button.gif"));
    	
    	

    	
    	// List matching events dialog
    	listMatchingEvents_ = new Action() {
    		public void run() {
    			ListDialog listDialog = new ListDialog(
    					parent_.getShell(),
    					Messages.getString("LatencyView.Dialogs.ListEvents.Title"),
    					Messages.getString("LatencyView.Dialogs.ListEvents.Message") );
    			listDialog.create();
    			listDialog.open();
    		}
    	};
    	tooltipText = Messages.getString("LatencyView.Action.ListEvents.Tooltip");
    	listMatchingEvents_.setText(tooltipText);
    	listMatchingEvents_.setToolTipText(tooltipText);
    	listMatchingEvents_.setImageDescriptor(
    			AbstractUIPlugin.imageDescriptorFromPlugin(
    					Messages.getString("LatencyView.tmf.UI"), 
    					"icons/events_view.gif"));
    	
    	

    	// Add matching events dialog
    	addMatchingEvents_ = new Action() {
    		public void run() {
    			AddDialog addDialog = new AddDialog(
    					parent_.getShell(),
    					Messages.getString("LatencyView.Dialogs.AddEvents.Title"),
    					Messages.getString("LatencyView.Dialogs.AddEvents.Message") );
    			addDialog.create();
    			addDialog.open();
    		}
    	};
    	tooltipText = Messages.getString("LatencyView.Action.AddEvents.Tooltip");
    	addMatchingEvents_.setText(tooltipText);
    	addMatchingEvents_.setToolTipText(tooltipText);
    	addMatchingEvents_.setImageDescriptor(
    			AbstractUIPlugin.imageDescriptorFromPlugin(
    					Messages.getString("LatencyView.tmf.UI"), 
    					"icons/add_button.gif"));
    	
    	

    	// Remove matching events dialog
    	deleteMatchingEvents_ = new Action() {
    		public void run() {
    			DeleteDialog deleteDialog = new DeleteDialog(
    					parent_.getShell(),
    					Messages.getString("LatencyView.Dialogs.DeleteEvents.Title"),
    					Messages.getString("LatencyView.Dialogs.DeleteEvents.Message") );
    			deleteDialog.create();
    			deleteDialog.open();
    		}
    	};
    	tooltipText = Messages.getString("LatencyView.Action.DeleteEvents.Tooltip");
    	deleteMatchingEvents_.setText(tooltipText);
    	deleteMatchingEvents_.setToolTipText(tooltipText);
    	deleteMatchingEvents_.setImageDescriptor(
    			AbstractUIPlugin.imageDescriptorFromPlugin(
    					Messages.getString("LatencyView.tmf.UI"), 
    					"icons/delete_button.gif"));
    }
    
    /**
     * Build the toolbar and menu by adding action buttons for dialogs.
     */
    private void contributeToActionBars() {
    	IActionBars bars = getViewSite().getActionBars();
    	fillLocalPullDown(bars.getMenuManager());
    	fillLocalToolBar(bars.getToolBarManager());
    }
    
    
    
    
    
    
    
 
    /**
     * Before completing its indexing, the experiment doesn't know start/end time. However, LTTng individual traces have this 
     * knowledge so we should ask them directly.
     * @return The experiment's time range.
     */
    public static TmfTimeRange getExperimentTimeRange() {
		TmfTimestamp startTime = TmfTimestamp.BigCrunch;
		TmfTimestamp endTime   = TmfTimestamp.BigBang;
		
		if (rangeSyncSignal_ != null) {
			startTime = rangeSyncSignal_.getCurrentRange().getStartTime();
    		endTime   = rangeSyncSignal_.getCurrentRange().getEndTime();
    		timeRange_ = new TmfTimeRange(startTime, endTime);
		} else if (experiment_ != null) {
			for (ITmfTrace trace : experiment_.getTraces()) {
				TmfContext context = trace.seekLocation(null);
				context.setRank(0);
				TmfEvent event = trace.getNextEvent(context);
				
				TmfTimestamp traceStartTime = event.getTimestamp();
				if (traceStartTime.compareTo(startTime, true) < 0)
					startTime = traceStartTime;
				
				TmfTimestamp traceEndTime = trace.getEndTime();
				if (traceEndTime.compareTo(endTime, true) > 0)
					endTime = traceEndTime;
	    	}
		}
		
        return new TmfTimeRange(startTime, endTime);
    }
    
    /**
     * Returns the current histogram window time range.
     * @return The current histogram window time range.
     */
    public static TmfTimeRange getTimeRange() {
    	return timeRange_;
    }

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency;

import java.util.MissingResourceException;
import java.util.ResourceBundle;


/**
 * Returns localised strings from the resource bundle (i.e. "messages.properties").
 * 
 * @author Philippe Sawicki
 */
public class Messages {
	
	/**
	 * Bundle name.
	 */
	private static final String BUNDLE_NAME = "org.eclipse.linuxtools.lttng.ui.views.latency.messages"; //$NON-NLS-1$

	/**
	 * A reference to the resource bundle.
	 */
	private static final ResourceBundle RESOURCE_BUNDLE = ResourceBundle.getBundle(BUNDLE_NAME);

	
	/**
	 * Private constructor to defeat instantiation.
	 */
	private Messages() {
		
	}

	/**
	 * Returns the localised String for the given key-ID.
	 * @param key The key of the localised String.
	 * @return The localised String for the given key-ID.
	 */
	public static String getString(String key) {
		try {
			return RESOURCE_BUNDLE.getString(key);
		} catch (MissingResourceException e) {
			return '!' + key + '!';
		}
	}
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.dialogs;

import java.util.Vector;

import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.Pair;
import org.eclipse.linuxtools.lttng.ui.LTTngUiPlugin;
import org.eclipse.linuxtools.lttng.ui.views.latency.LatencyView;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;


/**
 * Abstract dialog class, regroups the main functions shared by all the 
 * different dialogs.
 * 
 * @author Philippe Sawicki
 */
public abstract class AbstractDialog extends TitleAreaDialog {
	
	/**
	 * The dialog window title.
	 */
	protected String dialogTitle_;
	/**
	 * The dialog window message.
	 */
	protected String dialogMessage_;
	
	/**
	 * The code returned by the dialog when the user closes the "Add" dialog.
	 */
	public static final int ADD = 53445;
	/**
	 * The code returned by the dialog when the user closes the "Delete" dialog.
	 */
	public static final int DELETE = ADD+1;
	/**
	 * The code returned by the dialog when the user resets the latency pair to default.
	 */
	public static final int RESET = DELETE+1;
	
	/**
	 * String ID of the number of pairs saved in the settings file.
	 */
	protected static final String LATENCY_NB_MATCH_PAIRS = "NB_LATENCY_MATCH_PAIRS";
	/**
	 * String ID of the start event pairs saved in the settings file.
	 */
	protected static final String LATENCY_PAIRS_START = "LATENCY_PAIRS_START";
	/**
	 * String ID of the end event pairs saved in the settings file.
	 */
	protected static final String LATENCY_PAIRS_END = "LATENCY_PAIRS_END";
	
	/**
	 * Dialog settings, saves the event pairs across sessions.
	 */
	protected IDialogSettings settings_;
	
	/**
	 * Do the graphs canvas need to be redrawn due to latency pairs changes ?
	 */
	protected boolean redrawGraphs_ = false;
	
	
	/**
	 * Constructor.
	 * @param parentShell The parent shell.
	 * @param title The dialog window's title.
	 * @param message The dialog window's message.
	 */
	public AbstractDialog(Shell parentShell, String title, String message) {
		super(parentShell);
		dialogTitle_ = title;
		dialogMessage_ = message;
		
		settings_ = LTTngUiPlugin.getDefault().getDialogSettings();
	}
	
	/**
	 * Constructor
	 * @param parentShell The parent shell.
	 * @param title The dialog window's title.
	 */
	public AbstractDialog(Shell parentShell, String title) {
		this(parentShell, title, "");
	}

	/**
	 * Constructor.
	 * @param parentShell The parent shell.
	 */
	public AbstractDialog(Shell parentShell) {
		this(parentShell, "", "");
	}
	
	/**
	 * Creates the dialog.
	 * 
	 * <b>Note :</b> Since there is an issue with the table's vertical scrollbar,
	 * this dialog "resize" is necessary to ensure a minimal height for the window.
	 */
	@Override
	public void create() {
		super.create();
		//  Set the title
		setTitle(dialogTitle_);
		// Set the message
		setMessage(dialogMessage_, IMessageProvider.INFORMATION);
		
		// Position the dialog at the center of the screen
		int windowWidth  = Display.getCurrent().getPrimaryMonitor().getBounds().width;
		int windowHeight = Display.getCurrent().getPrimaryMonitor().getBounds().height;
		int dialogWidth  = getShell().getSize().x;
		int dialogHeight = windowHeight / 2;
		
		int x = (windowWidth  - dialogWidth)  / 2;
		int y = (windowHeight - dialogHeight) / 2;
		
		getShell().setSize(getShell().getSize().x, dialogHeight);
		getShell().setLocation(x, y);
	}
	
	/**
	 * Formats the "#" of the event in the table by adding "00" before it.
	 * @param number The number to format.
	 * @param max The maximum number of event pairs in the list.
	 * @return The formatted string.
	 */
	protected String formatListNumber(int number, int max) {
		return String.format("%0"+max+"d", number);
	}
	
	/**
	 * Returns the match pairs saved in the settings file.
	 * @return The match pairs saved in the settings file.
	 */
	protected Pair<Vector<String>,Vector<String>> getMatchPairs() {
		try {
			// Check if the settings file has already some data (i.e. try provoking an exception)
			settings_.getInt(LATENCY_NB_MATCH_PAIRS);
			
			String[] starts = settings_.getArray(LATENCY_PAIRS_START);
			String[] ends   = settings_.getArray(LATENCY_PAIRS_END);

			EventMatcher.getInstance().resetMatches();
			for (int i = 0; i < starts.length; i++) {
				EventMatcher.getInstance().addMatch(starts[i], ends[i]);
			}
			
			return EventMatcher.getInstance().getEvents();
		} catch (NumberFormatException e) {
			return EventMatcher.getInstance().getEvents();
		}
	}
	
	/**
	 * Saves the event match pairs to a settings file.
	 * @param start The start event types.
	 * @param end The end event types.
	 */
	protected void saveMatchPairs(Vector<String> start, Vector<String> end) {
		settings_.put(LATENCY_NB_MATCH_PAIRS, start.size());
		settings_.put(LATENCY_PAIRS_START, start.toArray(new String[]{}));
		settings_.put(LATENCY_PAIRS_END, end.toArray(new String[]{}));
	}
	
	/**
	 * Ask the LatencyView to send a new analysis request to the views, so that they can be redrawn.
	 */
	protected void redrawGraphs() {
		LatencyView.sendAnalysisRequest();
	}

	/**
	 * Creates the dialog area.
	 * @param parent The parent.
	 */
	@Override
	protected abstract Control createDialogArea(Composite parent);

	/**
	 * Creates the buttons for the button bar.
	 * @param parent The parent.
	 */
	@Override
	protected abstract void createButtonsForButtonBar(Composite parent);
	
	/**
	 * Is the dialog resizable ?
	 */
	@Override
	protected boolean isResizable() {
		return true;
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.dialogs;

import java.util.Vector;

import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.Pair;
import org.eclipse.linuxtools.lttng.ui.views.latency.Messages;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;


/**
 * Add dialog, lets the user add custom start/end event pairs.
 * 
 * @author Philippe Sawicki
 */
public class AddDialog extends AbstractDialog {
	
	/**
	 * The dialog's start table.
	 */
	protected Table startTable_;
	/**
	 * The dialog's end table.
	 */
	protected Table endTable_;
	/**
	 * The dialog's list table.
	 */
	protected Table listTable_;
	
	/**
	 * Start table columns.
	 */
	protected TableColumn[] startColumns_;
	/**
	 * End table columns.
	 */
	protected TableColumn[] endColumns_;
	/**
	 * List table columns.
	 */
	protected TableColumn[] listColumns_;
	
	/**
	 * Start table column names (header titles).
	 */
	protected static final String[] START_COLUMN_NAMES = {"", Messages.getString("LatencyView.Dialogs.AddEvents.Columns.Start")};
	/**
	 * End table column names (header titles).
	 */
	protected static final String[] END_COLUMN_NAMES = {"", Messages.getString("LatencyView.Dialogs.AddEvents.Columns.End")};
	/**
	 * List table column names (header titles).
	 */
	protected static final String[] LIST_COLUMN_NAMES = {"#", Messages.getString("LatencyView.Dialogs.AddEvents.Columns.List.Trigger"), Messages.getString("LatencyView.Dialogs.AddEvents.Columns.List.End")};
	/**
	 * Column widths.
	 */
	protected static final int[] COLUMN_WIDTHS = {25, 250, 250};
	
	/**
	 * Possible event types.
	 */
	protected Vector<String> eventTypes_ = new Vector<String>();
	
	/**
	 * Start event types.
	 */
	protected Vector<String> eventStartTypes_;
	/**
	 * End event types.
	 */
	protected Vector<String> eventEndTypes_;
	
	/**
	 * Selected start type.
	 */
	protected String startType_;
	/**
	 * Selected end type.
	 */
	protected String endType_;
	

	/**
	 * Constructor.
	 * @param parentShell The parent shell.
	 * @param title The dialog's window title.
	 * @param message The dialog's window message.
	 */
	public AddDialog(Shell parentShell, String title, String message) {
		super(parentShell, title, message);
		
		// Get the possible events from the list
		eventTypes_ = EventMatcher.getInstance().getTypeList();
		
		// Get the list of start and end types from the EventMatcher
		Pair<Vector<String>,Vector<String>> pair = getMatchPairs();
		eventStartTypes_ = pair.getFirst();
		eventEndTypes_   = pair.getSecond();
	}
	
	/**
	 * Creates the start table's columns (i.e. the table header).
	 */
	protected void createStartColumns() {
		startColumns_ = new TableColumn[START_COLUMN_NAMES.length];
		for (int i = 0; i < START_COLUMN_NAMES.length; i++) {
			startColumns_[i] = new TableColumn(startTable_, SWT.LEFT);
			startColumns_[i].setText(START_COLUMN_NAMES[i]);
			startColumns_[i].setWidth(COLUMN_WIDTHS[i]);
		}
	}
	
	/**
	 * Creates the end table's columns (i.e. the table header).
	 */
	protected void createEndColumns() {
		endColumns_ = new TableColumn[END_COLUMN_NAMES.length];
		for (int i = 0; i < END_COLUMN_NAMES.length; i++) {
			endColumns_[i] = new TableColumn(endTable_, SWT.LEFT);
			endColumns_[i].setText(END_COLUMN_NAMES[i]);
			endColumns_[i].setWidth(COLUMN_WIDTHS[i]);
		}
	}
	
	/**
	 * Creates the list table's columns (i.e. the table header).
	 */
	protected void createListColumns() {
		listColumns_ = new TableColumn[LIST_COLUMN_NAMES.length];
		for (int i = 0; i < LIST_COLUMN_NAMES.length; i++) {
			listColumns_[i] = new TableColumn(listTable_, SWT.LEFT);
			listColumns_[i].setText(LIST_COLUMN_NAMES[i]);
			listColumns_[i].setWidth(COLUMN_WIDTHS[i]);
		}
	}
	
	/**
	 * Creates the start column list.
	 * @param parent The parent composite.
	 */
	protected void createStartColumn(Composite parent) {
		final int style = SWT.SINGLE | SWT.CHECK | SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL;
		GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true);
		startTable_ = new Table(parent, style);
		startTable_.setLayoutData(layoutData);
		
		// Some cosmetic enhancements
		startTable_.setHeaderVisible(true);
		startTable_.setLinesVisible(true);
		
		createStartColumns();
		
		for (int i = 0; i < eventTypes_.size(); i++) {
			TableItem item = new TableItem(startTable_, SWT.RIGHT);
			
			String[] columns = {
					eventTypes_.get(i),
					eventTypes_.get(i)
			};
			
			item.setText(columns);
		}
		
		startTable_.setItemCount( eventTypes_.size() );
		
		startTable_.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				if (event.detail == SWT.CHECK) {
					TableItem[] items = startTable_.getItems();
					for (TableItem item : items) {
						if (item != event.item) {
							item.setChecked(false);
						}
					}
				}
			}
		});
	}

	/**
	 * Creates the end column list.
	 * @param parent The parent composite.
	 */
	protected void createEndColumn(Composite parent) {
		final int style = SWT.SINGLE | SWT.CHECK | SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL;
		GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true);
		endTable_ = new Table(parent, style);
		endTable_.setLayoutData(layoutData);
		
		// Some cosmetic enhancements
		endTable_.setHeaderVisible(true);
		endTable_.setLinesVisible(true);
		
		createEndColumns();
		
		for (int i = 0; i < eventTypes_.size(); i++) {
			TableItem item = new TableItem(endTable_, SWT.RIGHT);
			
			String[] columns = {
					eventTypes_.get(i),
					eventTypes_.get(i)
			};
			
			item.setText(columns);
		}
		
		endTable_.setItemCount( eventTypes_.size() );
		
		endTable_.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				if (event.detail == SWT.CHECK) {
					TableItem[] items = endTable_.getItems();
					for (TableItem item : items) {
						if (item != event.item) {
							item.setChecked(false);
						}
					}
				}
			}
		});
	}

	/**
	 * Creates the list column for already existing event pairs.
	 * @param parent The parent composite.
	 */
	protected void createListColumn(Composite parent) {
		final int style = SWT.SINGLE | SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL;
		GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true);
		layoutData.horizontalSpan = 2;
		listTable_ = new Table(parent, style);
		listTable_.setLayoutData(layoutData);
		
		// Some cosmetic enhancements
		listTable_.setHeaderVisible(true);
		listTable_.setLinesVisible(true);
		
		createListColumns();
		
		for (int i = 0; i < eventStartTypes_.size(); i++) {
			TableItem item = new TableItem(listTable_, SWT.RIGHT);
			
			String max = "" + eventStartTypes_.size();
			String number = formatListNumber(i+1, max.length());
			
			String[] columns = {
					number,
					eventStartTypes_.get(i),
					eventEndTypes_.get(i)
			};
			
			item.setText(columns);
		}
		
		listTable_.setItemCount( 103 );
		listTable_.remove(eventTypes_.size(), 103-1);
	}

	/**
	 * Creates the dialog area.
	 * @param parent The parent.
	 */
	@Override
	protected Control createDialogArea(Composite parent) {
		GridLayout layout = new GridLayout(2, true);
		parent.setLayout(layout);
		
		createStartColumn(parent);
		createEndColumn(parent);
		createListColumn(parent);
		
		return parent;
	}

	/**
	 * Creates the buttons for the button bar.
	 * @param parent The parent.
	 */
	@Override
	protected void createButtonsForButtonBar(Composite parent) {
		GridData gridData = new GridData();
		gridData.verticalAlignment = GridData.FILL;
		gridData.horizontalSpan = 1;
		gridData.grabExcessHorizontalSpace = true;
		gridData.grabExcessVerticalSpace = true;
		gridData.horizontalAlignment = SWT.RIGHT;
		
		parent.setLayoutData(gridData);
		
		// Create the "Add" button
		Button addButton = createButton(parent, ADD, Messages.getString("LatencyView.Dialogs.AddEvents.Buttons.Add"), false);
		addButton.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				if (isValidInput()) {
					// Add the event pair to the EventMatcher and save the pairs 
					EventMatcher.getInstance().addMatch(startType_, endType_);
					eventStartTypes_.add(startType_);
					eventEndTypes_.add(endType_);
					saveMatchPairs(eventStartTypes_, eventEndTypes_);
					
					Pair<Vector<String>,Vector<String>> pairs = EventMatcher.getInstance().getEvents();
					eventStartTypes_ = pairs.getFirst();
					eventEndTypes_   = pairs.getSecond();
					
					listTable_.removeAll();
					
					for (int i = 0; i < eventStartTypes_.size(); i++) {
						TableItem item = new TableItem(listTable_, SWT.RIGHT);
						
						String max = "" + eventStartTypes_.size();
						String number = formatListNumber(i+1, max.length());
						
						String[] columns = {
								number,
								eventStartTypes_.get(i),
								eventEndTypes_.get(i)
						};
						
						item.setText(columns);
					}
					
					saveMatchPairs(eventStartTypes_, eventEndTypes_);
				}
				
				redrawGraphs_ = true;
			}
		});
		
		// Create the "Close" button
		Button closeButton = createButton(parent, CANCEL, Messages.getString("LatencyView.Dialogs.AddEvents.Buttons.Close"), false);
		closeButton.addListener(SWT.Selection, new Listener() {
			@Override
			public void handleEvent(Event event) {
				setReturnCode(CANCEL);
				
				if (redrawGraphs_ == true)
					redrawGraphs();
				
				close();
			}
		});
	}
	
	/**
	 * Validate the list before adding event pairs.
	 * @return "true" if the input is valid, "false" otherwise.
	 */
	protected boolean isValidInput() {
		// Remove the previous error message
		setErrorMessage(null);
		
		boolean valid = true;
		
		// Check if an item from the start list is selected
		TableItem[] items = startTable_.getItems();
		startType_ = null;
		boolean startHasSelectedItem = false;
		for (int i = 0; i < items.length && !startHasSelectedItem; i++) {
			if (items[i].getChecked() == true) {
				startType_ = items[i].getText();
				startHasSelectedItem = true;
			}
		}

		// Check if an item from the end list is selected
		items = endTable_.getItems();
		endType_ = null;
		boolean endHasSelectedItem = false;
		for (int i = 0; i < items.length && !endHasSelectedItem; i++) {
			if (items[i].getChecked() == true) {
				endType_ = items[i].getText();
				endHasSelectedItem = true;
			}
		}
		
		// Print error message if needed.
		if (!startHasSelectedItem && !endHasSelectedItem) {
			setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.NoSelection") );
			valid = false;
		} else if (!startHasSelectedItem) {
			setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.StartNotSelected") );
			valid = false;
		} else if (!endHasSelectedItem) {
			setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.EndNotSelected") );
			valid = false;
		}
		
		// Check if the same item is selected in both lists
		if (startHasSelectedItem && endHasSelectedItem) {
			if ( startType_.equalsIgnoreCase(endType_) ) {
				setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.SameSelected") );
				valid = false;
			}
		}
		
		// Check if the selected item is already in the list
		if (startHasSelectedItem && endHasSelectedItem) {
			Pair<Vector<String>,Vector<String>> pairs = getMatchPairs();
			Vector<String> startEvents = pairs.getFirst();
			Vector<String> endEvents   = pairs.getSecond();
			
			boolean startAlreadyUsed      = false;
			boolean endAlreadyUsed        = false;
			boolean startAsEndAlreadyUsed = false;
			boolean endAsStartAlreadyUsed = false;
			
			if (startEvents.contains(startType_)) {
				startAlreadyUsed = true;
			}
			if (endEvents.contains(endType_)) {
				endAlreadyUsed = true;
			}
			if (startEvents.contains(endType_)) {
				endAsStartAlreadyUsed = true;
			}
			if (endEvents.contains(startType_)) {
				startAsEndAlreadyUsed = true;
			}
			
			if (startAlreadyUsed && endAlreadyUsed) {
				setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.AlreadyMatched") );
				valid = false;
			} else if (startAlreadyUsed) {
				setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.StartAlreadyMatched") );
				valid = false;
			} else if (endAlreadyUsed) {
				setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.EndAlreadyMatched") );
				valid = false;
			}
			
			if (startAsEndAlreadyUsed) {
				setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.StartAsEnd") );
				valid = false;
			}
			if (endAsStartAlreadyUsed) {
				setErrorMessage( Messages.getString("LatencyView.Dialogs.AddEvents.Errors.EndAsStart") );
				valid = false;
			}
		}
		
		return valid;
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.dialogs;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
import org.eclipse.linuxtools.lttng.ui.views.latency.Messages;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableItem;


/**
 * Remove dialog, lets the user remove start/end event pairs.
 * 
 * @author Philippe Sawicki
 */
public class DeleteDialog extends ListDialog {

	/**
	 * Constructor.
	 * @param parentShell The parent shell.
	 * @param title The dialog's window title.
	 * @param message The dialog's window message.
	 */
	public DeleteDialog(Shell parentShell, String title, String message) {
		super(parentShell, title, message);
		
		// Set the table style
		style_ = SWT.MULTI | SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL;
	}

	/**
	 * Creates the buttons for the button bar.
	 * @param parent The parent.
	 */
	@Override
	protected void createButtonsForButtonBar(Composite parent) {
		GridData gridData = new GridData();
		gridData.verticalAlignment = GridData.FILL;
		gridData.horizontalSpan = 1;
		gridData.grabExcessHorizontalSpace = true;
		gridData.grabExcessVerticalSpace = true;
		gridData.horizontalAlignment = SWT.RIGHT;
		
		parent.setLayoutData(gridData);
		
		// Create the "Delete" button
		Button deleteButton = createButton(parent, DELETE, Messages.getString("LatencyView.Dialogs.DeleteEvents.Buttons.Delete"), false);
		deleteButton.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				TableItem selectedItem = table_.getSelection()[0];
				if (selectedItem == null)
					return;
				
				int[] selectedIndices = table_.getSelectionIndices();
				
				String deletePairs = "";
				for (int i = 0; i < selectedIndices.length; i++) {
					int index = selectedIndices[i];
					deletePairs += "\t* " + eventStartTypes_.get(index) + " / " + eventEndTypes_.get(index);
					
					if (i < selectedIndices.length-1) {
						deletePairs += "\n";
					}
				}
				
				boolean confirmDeletion = MessageDialog.openQuestion(
						getShell(),
						Messages.getString("LatencyView.Dialogs.DeleteEvents.Confirm.Title"),
						Messages.getString("LatencyView.Dialogs.DeleteEvents.Confirm.Message") + "\n\n" + deletePairs);
				
				if (confirmDeletion) {
					// Remove the events starting from the end of the list, otherwise the TableItem elements will lose their
					// index from the table and may trigger an exception when removing an index that is no longer valid.
					for (int i = selectedIndices.length-1; i >= 0; i--) {
						int selectedIndex = selectedIndices[i];
						EventMatcher.getInstance().removeMatch(eventStartTypes_.get(selectedIndex), eventEndTypes_.get(selectedIndex));
						
						table_.remove(selectedIndex);
						
						// Update the list of events
						eventStartTypes_.remove(selectedIndex);
						eventEndTypes_.remove(selectedIndex);
					}
					
					// Save the events pairs in the settings file so it can be retrieved in the next session
					saveMatchPairs(eventStartTypes_, eventEndTypes_);
					
					table_.setItemCount( eventStartTypes_.size() );
					
					TableItem[] newItems = table_.getItems();
					table_.removeAll();
					for (int i = 0; i < newItems.length; i++) {
						TableItem item = new TableItem(table_, SWT.RIGHT);
						
						String max = "" + eventStartTypes_.size();
						String number = formatListNumber(i+1, max.length());
						
						String[] columns = {
								number,
								eventStartTypes_.get(i),
								eventEndTypes_.get(i)
						};
						
						item.setText(columns);
					}
					
					redrawGraphs_ = true;
				}
			}
		});
		
		// Create the "Close" button
		Button closeButton = createButton(parent, CANCEL, Messages.getString("LatencyView.Dialogs.AddEvents.Buttons.Close"), false);
		closeButton.addListener(SWT.Selection, new Listener() {
			@Override
			public void handleEvent(Event event) {
				// Remember the user's list
				saveMatchPairs(eventStartTypes_, eventEndTypes_);
				
				setReturnCode(CANCEL);

				if (redrawGraphs_ == true)
					redrawGraphs();
				
				close();
			}
		});
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.dialogs;

import java.util.Vector;

import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.Pair;
import org.eclipse.linuxtools.lttng.ui.views.latency.Messages;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;


/**
 * List dialog, shows the list of start/end event pairs.
 * 
 * @author Philippe Sawicki
 */
public class ListDialog extends AbstractDialog {
	
	/**
	 * The dialog's table.
	 */
	protected Table table_;
	
	/**
	 * Start event types.
	 */
	protected Vector<String> eventStartTypes_;
	/**
	 * End event types.
	 */
	protected Vector<String> eventEndTypes_;
	
	/**
	 * Table columns
	 */
	protected TableColumn[] columns_;
	
	/**
	 * Column names (header titles).
	 */
	protected static final String[] COLUMN_NAMES = {"#", Messages.getString("LatencyView.Dialogs.ListEvents.Columns.Trigger"), Messages.getString("LatencyView.Dialogs.ListEvents.Columns.End")};
	/**
	 * Column widths.
	 */
	protected static final int[] COLUMN_WIDTHS = {25, 250, 250};
	
	/**
	 * The table style.
	 */
	protected int style_;
	

	/**
	 * Constructor.
	 * @param parentShell The parent shell.
	 * @param title The dialog's window title.
	 * @param message The dialog's window message.
	 */
	public ListDialog(Shell parentShell, String title, String message) {
		super(parentShell, title, message);
		
		// Set the table style
		style_ = SWT.SINGLE | SWT.FULL_SELECTION | SWT.BORDER | SWT.V_SCROLL;
		
		// Get the list of start and end types from the EventMatcher
		Pair<Vector<String>,Vector<String>> pair = getMatchPairs();
		eventStartTypes_ = pair.getFirst();
		eventEndTypes_   = pair.getSecond();
	}
	
	/**
	 * Creates the table's column (i.e. the table header).
	 */
	protected void createColumns() {
		columns_ = new TableColumn[COLUMN_NAMES.length];
		for (int i = 0; i < COLUMN_NAMES.length; i++) {
			columns_[i] = new TableColumn(table_, SWT.LEFT);
			columns_[i].setText(COLUMN_NAMES[i]);
			columns_[i].setWidth(COLUMN_WIDTHS[i]);
		}
	}
	
	/**
	 * Creates the dialog area.
	 * @param parent The parent.
	 */
	@Override
	protected Control createDialogArea(Composite parent) {
		GridLayout layout = new GridLayout(1, true);
		parent.setLayout(layout);
		
		GridData layoutData = new GridData(SWT.FILL, SWT.FILL, true, true);
		table_ = new Table(parent, style_);
		table_.setLayoutData(layoutData);
		
		// Some cosmetic enhancements
		table_.setHeaderVisible(true);
		table_.setLinesVisible(true);
		
		createColumns();
		
		for (int i = 0; i < eventStartTypes_.size(); i++) {
			TableItem item = new TableItem(table_, SWT.RIGHT);
			
			String max = "" + eventStartTypes_.size();
			String number = formatListNumber(i+1, max.length());
			
			String[] columns = {
					number,
					eventStartTypes_.get(i),
					eventEndTypes_.get(i)
			};
			
			item.setText(columns);
		}
		
		return parent;
	}

	/**
	 * Creates the buttons for the button bar.
	 * @param parent The parent.
	 */
	@Override
	protected void createButtonsForButtonBar(Composite parent) {
		GridData gridData = new GridData();
		gridData.verticalAlignment = GridData.FILL;
		gridData.horizontalSpan = 1;
		gridData.grabExcessHorizontalSpace = true;
		gridData.grabExcessVerticalSpace = true;
		gridData.horizontalAlignment = SWT.RIGHT;
		
		parent.setLayoutData(gridData);
		
		// Create the "Reset" button
		Button resetButton = createButton(parent, RESET, Messages.getString("LatencyView.Dialogs.ListEvents.Buttons.Reset"), false);
		resetButton.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				boolean confirmDeletion = MessageDialog.openQuestion(
						getShell(),
						Messages.getString("LatencyView.Dialogs.ListEvents.Confirm.Title"),
						Messages.getString("LatencyView.Dialogs.ListEvents.Confirm.Message"));
				
				if (confirmDeletion) {
					EventMatcher.getInstance().resetMatches();
					
					table_.removeAll();
					
					Vector<String> defaultStarts = new Vector<String>();
					Vector<String> defaultEnds   = new Vector<String>();
					
					defaultStarts.add(EventMatcher.PAGE_FAULT_GET_USER_ENTRY); defaultEnds.add(EventMatcher.PAGE_FAULT_GET_USER_EXIT);
					defaultStarts.add(EventMatcher.TASKLET_LOW_ENTRY);         defaultEnds.add(EventMatcher.TASKLET_LOW_EXIT);
					defaultStarts.add(EventMatcher.PAGE_FAULT_ENTRY);          defaultEnds.add(EventMatcher.PAGE_FAULT_EXIT);
					defaultStarts.add(EventMatcher.SYSCALL_ENTRY);             defaultEnds.add(EventMatcher.SYSCALL_EXIT);
					defaultStarts.add(EventMatcher.IRQ_ENTRY);                 defaultEnds.add(EventMatcher.IRQ_EXIT);
					defaultStarts.add(EventMatcher.READ);                      defaultEnds.add(EventMatcher.WRITE);
					defaultStarts.add(EventMatcher.OPEN);                      defaultEnds.add(EventMatcher.CLOSE);
					defaultStarts.add(EventMatcher.BUFFER_WAIT_START);         defaultEnds.add(EventMatcher.BUFFER_WAIT_END);
					defaultStarts.add(EventMatcher.START_COMMIT);              defaultEnds.add(EventMatcher.END_COMMIT);
					defaultStarts.add(EventMatcher.WAIT_ON_PAGE_START);        defaultEnds.add(EventMatcher.WAIT_ON_PAGE_END);

					saveMatchPairs(defaultStarts, defaultEnds);
					
					for (int i = 0; i < defaultStarts.size(); i++) {
						EventMatcher.getInstance().addMatch(defaultStarts.get(i), defaultEnds.get(i));
					}
					

					// Get the list of start and end types from the EventMatcher
					Pair<Vector<String>,Vector<String>> pair = getMatchPairs();
					eventStartTypes_ = pair.getFirst();
					eventEndTypes_   = pair.getSecond();
					
					for (int i = 0; i < eventStartTypes_.size(); i++) {
						TableItem item = new TableItem(table_, SWT.RIGHT);
						
						String max = "" + eventStartTypes_.size();
						String number = formatListNumber(i+1, max.length());
						
						String[] columns = {
								number,
								eventStartTypes_.get(i),
								eventEndTypes_.get(i)
						};
						
						item.setText(columns);
					}
					
					table_.setItemCount(eventStartTypes_.size());
					
					redrawGraphs_ = true;
				}
			}
		});
		
		// Create the "Close" button
		Button closeButton = createButton(parent, CANCEL, Messages.getString("LatencyView.Dialogs.ListEvents.Buttons.Close"), false);
		closeButton.addListener(SWT.Selection, new Listener() {
			public void handleEvent(Event event) {
				setReturnCode(CANCEL);
				
				if (redrawGraphs_ == true)
					redrawGraphs();
				
				close();
			}
		});
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.handlers;


/**
 * View handler, catches the view requests for data.
 * 
 * @author Philippe Sawicki
 */
public interface ViewHandler {
	
	/**
	 * Analyses the latency for all event types.
	 */
	public void analyseLatencyForAllEvents();
	
	/**
	 * Notifies the view handlers of the number of bars available.
	 * @param nbBars The number of bars available.
	 */
	public void notifyNumberOfBars(int nbBars);

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.listeners;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;


/**
 * AbstractMouseListener, base class for the canvas mouse listener.
 * 
 * @author Philippe Sawicki
 */
public abstract class AbstractMouseListener implements Listener {

	/**
	 * Mouse x-coordinate.
	 */
	protected long mouseX_;
	/**
	 * Mouse y-coordinate.
	 */
	protected long mouseY_;
	
	
	/**
	 * Handles the event.
	 */
	public void handleEvent(Event event) {
		switch (event.type) {
			case SWT.MouseMove:
				mouseX_ = event.x;
				mouseY_ = event.y;
				
				display();
				
				break;
		}
	}
	
	/**
	 * Tooltip display callback.
	 */
	protected abstract void display();
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.listeners;

import java.util.Collections;
import java.util.Vector;

import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.ui.views.latency.AbstractView;
import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Display;


/**
 * Abstract paint listener. Draws the graphs on the view canvas.
 * 
 * @author Philippe Sawicki
 */
public abstract class AbstractPaintListener implements PaintListener {
	
	/**
	 * A reference to the listener's view.
	 */
	protected AbstractView view_;
	
	/**
	 * Graph title
	 */
	protected String graphTitle_;

	/**
	 * X-axis label.
	 */
	protected String xAxisLabel_;
	/**
	 * Y-axis label.
	 */
	protected String yAxisLabel_;
	
	/**
	 * Horizontal offset for the x-axis label.
	 */
	protected int xAxisLabelOffset_;
	
	/**
	 * Vertical offset for the horizontal axis offset.
	 */
	protected int horizontalAxisYOffset_ = 20;

	/**
	 * Graph padding.
	 */
	protected int padding_ = Config.GRAPH_PADDING;
	
	/**
	 * Graph client area.
	 */
	protected Rectangle clientArea_ = new Rectangle(0, 0, 1, 1);
	
	/**
	 * Foreground color.
	 */
	protected Color foregroundColor_;
	/**
	 * Background color.
	 */
	protected Color backgroundColor_;
	/**
	 * Data plotting color.
	 */
	protected Color dataColor_;
	/**
	 * Axis label color.
	 */
	protected Color labelColor_;
	/**
	 * Text color.
	 */
	protected Color textColor_;
	/**
	 * Red.
	 */
	protected Color redColor_;
	/**
	 * White.
	 */
	protected Color whiteColor_;
	
	/**
	 * Original canvas font.
	 */
	protected Font originalFont_;
	/**
	 * Font for the title of the graph.
	 */
	protected Font titleFont_;
	/**
	 * Font for the values on the horizontal and vertical axis.
	 */
	protected Font valuesFont_;
	/**
	 * Font for the horizontal and vertical labels.
	 */
	protected Font labelFont_;
	
	/**
	 * Horizontal offset for the axis arrow.
	 */
	protected final int ARROW_DELTA_X = 10;
	/**
	 * Vertical offset for the axis arrow.
	 */
	protected final int ARROW_DELTA_Y =  4;
	
	/**
	 * Max horizontal distance between ticks.
	 */
	protected final int MAX_WIDTH_BETWEEN_TICKS  = 40;
	/**
	 * Max vertical distance between ticks.
	 */
	protected final int MAX_HEIGHT_BETWEEN_TICKS = 30;
	/**
	 * Max characters that can be displayed on the vertical axis.
	 */
	protected final int MAX_CHAR_VERTICAL_DISPLAY = 5;
	
	/**
	 * Draw label each "drawLabelEachNTicks_" ticks.
	 */
	protected int drawLabelEachNTicks_ = 1;
	
	/**
	 * Image drawn on the canvas.
	 */
	protected Image image_;
	/**
	 * Paint canvas, where the values are plotted.
	 */
	protected GC axisImage_;
	
	/**
	 * Is the paint listener initialized ?
	 */
	protected boolean initialised_ = false;
	/**
	 * Does the listener need to be redrawn ?
	 */
	protected boolean redraw_ = true;
	
	/**
	 * Draw area.
	 */
	protected Rectangle drawArea_;
	
	/**
	 * Left padding (in pixels).
	 */
	protected int paddingLeft_ = 10;
	/**
	 * Right padding (in pixels).
	 */
	protected int paddingRight_ = 10;
	/**
	 * Top padding (in pixels).
	 */
	protected int paddingTop_ = 10;
	/**
	 * Bottom padding (in pixels).
	 */
	protected int paddingBottom_ = 10;
	
	/**
	 * Vertical axis offset (in pixels).
	 */
	protected int verticalAxisOffset_ = 20;
	
	/**
	 * Vertical axis factor for values (10^delta).
	 * When values larger than MAX_CHAR_VERTICAL_DISPLAY.
	 */
	protected int delta = 0;
	
	
	/**
	 * Constructor.
	 * @param view A reference to the listener's view.
	 */
	public AbstractPaintListener(AbstractView view) {
		view_ = view;
	}
	
	@Override
	public void paintControl(PaintEvent e) {
		clientArea_ = view_.getClientArea();
		
		foregroundColor_ = e.gc.getForeground();
		backgroundColor_ = e.gc.getBackground();
		dataColor_      = e.gc.getDevice().getSystemColor(SWT.COLOR_RED);
		labelColor_      = e.gc.getDevice().getSystemColor(SWT.COLOR_BLACK);
		textColor_       = e.gc.getDevice().getSystemColor(SWT.COLOR_DARK_GRAY);
		redColor_        = e.gc.getDevice().getSystemColor(SWT.COLOR_RED);
		whiteColor_      = e.gc.getDevice().getSystemColor(SWT.COLOR_WHITE);
		
		originalFont_ = e.gc.getFont();
		titleFont_    = new Font(e.display, "Arial", 10, SWT.BOLD);
		valuesFont_   = new Font(e.display, "Arial", 7, SWT.NORMAL);
		labelFont_    = new Font(e.display, "Arial", 8, SWT.NORMAL);


		if (!initialised_) {
			image_ = new Image(Display.getDefault(), view_.getBounds());
			
			axisImage_ = new GC(image_);
			
			axisImage_.setForeground(foregroundColor_);
			axisImage_.setBackground(backgroundColor_);
			axisImage_.fillRectangle(image_.getBounds());
			paintBackground();
			
			initialised_ = true;
		}
		
		paintGraphTitle();
		paintHorizontalAxis();
		paintVerticalAxis();
		postAddDraw();

		e.gc.drawImage(image_, 0, 0);
		redraw_ = false;
	}
	
	/**
	 * Paints the title of the graph.
	 */
	public void paintGraphTitle() {
		if (graphTitle_ != null) {
			axisImage_.setFont(titleFont_);
			axisImage_.setForeground(labelColor_);
			axisImage_.setBackground(backgroundColor_);

			int zoomFactor = view_.getZoomFactor() / view_.getZoomIncrement() + 1;
			int labelWidth = axisImage_.stringExtent(graphTitle_).x;
			// Draws the zoom factor in the title only if there is one
			if (view_.getZoomFactor() > 1)
				axisImage_.drawText(graphTitle_+ " (" + zoomFactor + "x)", (view_.getBounds().width-padding_ - labelWidth)/2, 0);
			else
				axisImage_.drawText(graphTitle_, (view_.getBounds().width-padding_ - labelWidth)/2, 0);
		}
	}
	
	/**
	 * Paints the background of the draw area.
	 */
	public void paintBackground() {
		axisImage_.setBackground(whiteColor_);
		
		Rectangle rectangle = image_.getBounds();
		axisImage_.fillRectangle(padding_+verticalAxisOffset_, padding_+paddingTop_, rectangle.width-2*padding_-20, rectangle.height-2*padding_-paddingTop_-10);
	}
	
	/**
	 * Paints the horizontal axis.
	 */
	public void paintHorizontalAxis() {
		axisImage_.setForeground(foregroundColor_);
		
		int y = clientArea_.height - 2*padding_;
		
		axisImage_.drawLine( clientArea_.x+padding_+verticalAxisOffset_, 
				             y, 
				             clientArea_.width-padding_, 
				             y );

		paintHorizontalArrow(clientArea_.width-padding_, y);
		// Draw the axis graphic details only if there are some data points (i.e. do not draw the axis graphic details
		// if the window timerange is so small that no latency can be computed, or if there are no matching events in
		// the timerange (for example, when an experiment has many traces with a large time gap between the logged events sets).
		if (view_.getXMin() != Long.MAX_VALUE && view_.getXMax() != Long.MIN_VALUE && view_.getXMin() != view_.getXMax()) {
			paintHorizontalTicks(y);
			paintHorizontalAxisValues(y+30);
		}
		paintHorizontalAxisLabel(y+5);
	}
	
	/**
	 * Paints the vertical axis.
	 */
	public void paintVerticalAxis() {
		axisImage_.setForeground(foregroundColor_);
		
		int x = clientArea_.x + padding_ + verticalAxisOffset_;
		
		axisImage_.drawLine( x, 
				             clientArea_.y      + padding_, 
				             x, 
				             clientArea_.height - 2*padding_ );
		
		paintVerticalArrow(x, clientArea_.y + padding_);
		// Draw the axis graphic details only if there are some data points (i.e. do not draw the axis graphic details
		// if the window timerange is so small that no latency can be computed, or if there are no matching events in
		// the timerange (for example, when an experiment has many traces with a large time gap between the logged events sets).
		if (view_.getXMin() != Long.MAX_VALUE && view_.getXMax() != Long.MIN_VALUE && view_.getXMin() != view_.getXMax()) {
			//paintVerticalTicks(x);
			paintVerticalAxisValues(x);
		}
		paintVerticalAxisLabel(x);
	}
	
	/**
	 * Paints the arrow on the horizontal axis.
	 * @param x The x-coordinate of the point where the arrow points.
	 * @param y The y-coordinate of the point where the arrow points.
	 */
	public void paintHorizontalArrow(int x, int y) {
		// Arrow top line
		axisImage_.drawLine(x-ARROW_DELTA_X, y-ARROW_DELTA_Y, x, y);
		// Arrow bottom line
		axisImage_.drawLine(x-ARROW_DELTA_X, y+ARROW_DELTA_Y, x, y );
	}

	/**
	 * Paints the arrow on the vertical axis.
	 * @param x The x-coordinate of the point where the arrow points.
	 * @param y The y-coordinate of the point where the arrow points.
	 */
	public void paintVerticalArrow(int x, int y) {
		// Arrow left line
		axisImage_.drawLine(x-ARROW_DELTA_Y, y+ARROW_DELTA_X, x, y);
		// Arrow right line
		axisImage_.drawLine(x+ARROW_DELTA_Y, y+ARROW_DELTA_X, x, y);
	}
	
	/**
	 * Paints the horizontal ticks.
	 * @param y The y coordinate where to draw the axis.
	 */
	public void paintHorizontalTicks(int y) {
		long xMin = view_.getXMin();
		long xMax = view_.getXMax();
		
		if (xMin != 0L && xMax != 0L) {
			int nbTicks = (view_.getBounds().width - 2*padding_ - ARROW_DELTA_X - verticalAxisOffset_) / MAX_WIDTH_BETWEEN_TICKS - 1;
			
			for (int i = 0; i <= nbTicks+1; i++) {
				int x = i*MAX_WIDTH_BETWEEN_TICKS + padding_ + verticalAxisOffset_;
				axisImage_.drawLine(x, y, x, y+3);
			}
		}
	}
	
	/**
	 * Paints the horizontal axis values.
	 * @param y The y coordinate where to draw the axis.
	 */
	public void paintHorizontalAxisValues(int y) {
		long xMin = view_.getXMin();
		long xMax = view_.getXMax();
		
		if (xMin != 0L && xMax != 0L) {
			axisImage_.setForeground(textColor_);
			axisImage_.setBackground(backgroundColor_);
			
			int nbTicks = (view_.getBounds().width - 2*padding_ - ARROW_DELTA_X - verticalAxisOffset_) / MAX_WIDTH_BETWEEN_TICKS;
			//System.out.println("nbTicks = " + nbTicks);
			
			for (int i = 0; i < nbTicks; i++) {
				if (i % drawLabelEachNTicks_ == 0) {
					int x = i*MAX_WIDTH_BETWEEN_TICKS + padding_ + verticalAxisOffset_;
					
					double step = (double)(xMax-xMin) / (double)nbTicks;
					long currentValue = (long) (xMin + i*step);
					String currentLabel = formatStringForHorizontalAxis(currentValue);
					
					axisImage_.setFont(valuesFont_);
					axisImage_.drawText(currentLabel, x, y-24);
				}
			}
		}
	}
	
	/**
	 * Paints the horizontal axis label.
	 * @param y The y-coordinate where to draw the label.
	 */
	public void paintHorizontalAxisLabel(int y) {
		if (xAxisLabel_ != null) {
			axisImage_.setFont(labelFont_);
			axisImage_.setForeground(labelColor_);
			
			int labelWidth = axisImage_.stringExtent(xAxisLabel_).x;
			
			axisImage_.drawText(xAxisLabel_, view_.getBounds().width-padding_-labelWidth, y);
		}
	}

	/**
	 * Paints the vertical axis ticks.
	 * @param x The x-coordinate where to draw the ticks.
	 * @deprecated The vertical ticks are now drawn at the same time as the vertical axis values.
	 */
	public void paintVerticalTicks(int x) {
		long xMin = view_.getXMin();
		long xMax = view_.getXMax();
		
		if (xMin != 0L && xMax != 0L) {
			int nbTicks = (view_.getBounds().height-2*padding_-paddingTop_) / MAX_HEIGHT_BETWEEN_TICKS + 1;
			
			for (int i = 0; i <= nbTicks+1; i++) {
				int y = view_.getBounds().height - 2*padding_ - paddingTop_ - i*MAX_HEIGHT_BETWEEN_TICKS;
				axisImage_.drawLine(x-3, y+paddingTop_, x, y+paddingTop_);
			}
		}
	}
	
	/**
	 * Paints the vertical axis values.
	 * @param x The x-coordinate where to draw the values.
	 */
	public void paintVerticalAxisValues(int x) {
		long xMin = view_.getXMin();
		long xMax = view_.getXMax();
		int zoomFactor = 1;
		
		zoomFactor = view_.getZoomFactor();

		if (xMin != 0L && xMax != 0L) {
			axisImage_.setForeground(textColor_);
			axisImage_.setBackground(backgroundColor_);
			
			long yMin = view_.getYMin();
			// Apply the zoom to the max value of the graph for the next calculations
			long yMax = view_.getYMax() / zoomFactor;
							
			int nbTicks = (view_.getBounds().height-2*padding_-paddingTop_) / MAX_HEIGHT_BETWEEN_TICKS + 1;
			
			Vector<Integer> values = new Vector<Integer>();
			boolean multipleSameValues = true;
			while (multipleSameValues) {
				double valueStep = (double)(yMax-yMin) / (double)(nbTicks-1);
				
				for (int i = 0; i < nbTicks; i++) {
					double currentValue = (double) (yMin + i*valueStep)/(Math.pow(10, delta));
					
					values.add((int) currentValue);
				}
				
				Collections.sort(values);
				boolean hasRepetition = false;
				for (int i = 1; i < values.size(); i++) {
					if (values.get(i) == values.get(i-1)) {
						hasRepetition = true;
					}
				}
				
				if (hasRepetition) {
					nbTicks--;
					values.clear();
				} else {
					multipleSameValues = false;

					// Draw rectangle over the old values
					int height = view_.getBounds().height-4*padding_-paddingTop_;
					axisImage_.fillRectangle(0, padding_+paddingTop_, padding_+verticalAxisOffset_, height);

					double pixelStep = (getHeight() + 2.0*padding_ + paddingTop_ + 1)/*(view_.getBounds().height - 2*padding_ - 1*paddingTop_)*/ / values.size();
					
					for (int i = 0; i < values.size(); i++) {
						double currentValue = values.get(i);
						
						int y = (int) (view_.getBounds().height - 2*padding_ - i*pixelStep);
						String currentLabel = formatStringForVerticalAxis((long) currentValue);
						
						axisImage_.setFont(valuesFont_);
						
						Point textDimensions = axisImage_.stringExtent(currentLabel);
						axisImage_.drawText(currentLabel, x-textDimensions.x-5, y-textDimensions.y/2);
						axisImage_.drawLine(x-3, y, x, y);
					}
				}
			}
		}
	}
	
	/**
	 * Paints the vertical axis label.
	 * @param x The x-coordinate where to draw the label.
	 */
	public void paintVerticalAxisLabel(int x) {
		if (yAxisLabel_ != null) {
			axisImage_.setFont(labelFont_);
			axisImage_.setForeground(labelColor_);
			axisImage_.setBackground(backgroundColor_);
			
			if (delta >= 1)
				axisImage_.drawText(yAxisLabel_ + " (x10^" + delta + ")", x+10, paddingTop_-5);
			else 
				axisImage_.drawText(yAxisLabel_, x+10, paddingTop_-5);
		}
	}
	
	/**
	 * Adds points to the graph and draws them to the canvas.
	 * @param points The buffer of points to draw.
	 * @param nbPoints The number of points in the buffer.
	 */
	public abstract void addPoints(ChartPoint[] points, int nbPoints);

	/**
	 * Draw horizontal label each "nbTicks" ticks.
	 * @param nbTicks The draw interval.
	 */
	public void drawLabelEachNTicks(int nbTicks) {
		drawLabelEachNTicks_ = nbTicks;
	}

	/**
	 * Sets the title of the graph.
	 * @param graphTitle The title of the graph.
	 */
	public void setGraphTitle(String graphTitle) {
		graphTitle_ = graphTitle;
	}

	/**
	 * Sets the horizontal axis label.
	 * @param xAxisLabel The horizontal axis label.
	 * @param offset The horizontal axis draw offset (in pixels).
	 */
	public void setXAxisLabel(String xAxisLabel, int offset) {
		xAxisLabel_ = xAxisLabel;
		xAxisLabelOffset_ = offset;
	}

	/**
	 * Sets the vertical axis label.
	 * @param yAxisLabel The vertical axis label.
	 */
	public void setYAxisLabel(String yAxisLabel) {
		yAxisLabel_ = yAxisLabel;
	}
	
	/**
	 * Clears the image and prepares it for redrawing.
	 */
	public void clear() {
		initialised_ = false;
		view_.askForRedraw();
	}
	
	/**
	 * Returns a string representing the given value. This method is 
	 * redefined in "HistogramPaintListener.java" to convert value to 
	 * engineering notation.
	 * @param value The numeric value to convert to String.
	 * @return The String-formatted value.
	 */
	public String formatStringForHorizontalAxis(long value) {	
		return "" + value;
	}
	
	/**
	 * Returns a string representing the given value. This method is 
	 * redefined in "GraphPaintListener.java" to convert value to 
	 * scientific notation.
	 * @param value The numeric value to convert to String.
	 * @return The String-formatted value.
	 */
	public String formatStringForVerticalAxis(long value) {
		return "" + value;
	}
	
	/**
	 * Clears the points buffer, if any exists.
	 */
	public void clearPoints() { }
	
	/**
	 * Called for drawing elements after points are added to the graph.
	 */
	public void postAddDraw() { }
	
    /**
     * Returns the draw area height.
     * @return The draw area height.
     */
    public double getHeight() {
    	return (clientArea_.height - 2.0*padding_ - horizontalAxisYOffset_ - 0*paddingTop_ - 1);      
    }
    
    /**
     * Returns the histogram's draw area width.
     * @return The histogram's draw area width.
     */
    public double getWidth() {
    	return (clientArea_.width - 2.0*padding_ - verticalAxisOffset_);  //width of the plot area;
    }
    
    /**
     * Returns the histogram's draw area padding.
     * @return The histogram's draw area padding.
     */
    public int getPadding() {
    	return padding_;
    }
    
    /**
     * Returns the histogram's draw area top padding.
     * @return The histogram's draw area top padding.
     */
    public int getPaddingTop() {
    	return paddingTop_;
    }
    
    /**
     * Returns the histogram's vertical axis offset.
     * @return The histogram's vertical axis offset.
     */
    public int getVerticalAxisOffset() {
    	return verticalAxisOffset_;
    }
   
    /**
     * Returns the histogram's horizontal axis offset.
     * @return The histogram's horizontal axis offset.
     */
    public int getHorizontalAxisYOffset() {
    	return horizontalAxisYOffset_;
    }
	
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.listeners;

import java.text.DecimalFormat;

import org.eclipse.linuxtools.lttng.ui.views.latency.AbstractView;
import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;


/**
 * Graph paint listener.
 * 
 * @author Philippe Sawicki
 */
public class GraphPaintListener extends AbstractPaintListener {

	/**
	 * Constructor.
	 * @param view A reference to the listener's view.
	 */
	public GraphPaintListener(AbstractView view) {
		super(view);
	}
	
	/**
	 * Adds points to the graph and draws them to the canvas.
	 * @param points The buffer of points to draw.
	 * @param nbPoints The number of points in the buffer.
	 */
	public void addPoints(ChartPoint[] points, int nbPoints) {
		axisImage_.setForeground(dataColor_);
		axisImage_.setBackground(dataColor_);
		
		double width = clientArea_.width - 2.0*padding_ - verticalAxisOffset_;
		double height = clientArea_.height - 2.0*padding_ - paddingTop_ - horizontalAxisYOffset_ - 1;
		
		double xMin = view_.getXMin();
		double xMax = view_.getXMax();
		
		double yMin = view_.getYMin();
		double yMax = view_.getYMax();
		
		for (int i = 0; i < nbPoints; i++) {
			long pointX = points[i].getX();
			long pointY = points[i].getY();
			
			double x = padding_ + ((pointX-xMin) / (xMax-xMin)) * width + verticalAxisOffset_;
			double y = paddingTop_ + padding_ + height - ((pointY-yMin) / (yMax-yMin)) * height;
			
			axisImage_.fillOval((int)x, (int)y, 3, 3);
		}
		
		redraw_ = true;
		view_.askForRedraw();
	}

    /**
	 * Paints the vertical horizontal axis values in scientific notation in which the exponent is a multiple of three.
	 * @param value The numeric value to convert to scientific notation.
	 * @return The given value formatted according to the scientific notation.
	 */
    public String formatStringForVerticalAxis(long value) {
    	DecimalFormat formatter = new DecimalFormat("0.0E0"); 
		return formatter.format(value);
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.listeners;

import java.text.DecimalFormat;

import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.ui.views.latency.AbstractView;
import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;
import org.eclipse.linuxtools.lttng.ui.views.latency.Messages;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.plugin.AbstractUIPlugin;


/**
 * Histogram paint listener.
 *
 * @author Philippe Sawicki
 */
public class HistogramPaintListener extends AbstractPaintListener {
	
	/**
	 * Histogram points buffer.
	 */
	protected ChartPoint[] points_;
	/**
	 * Number of points to consider in the buffer.
	 */
	protected int nbPoints_ = 0;
	
	/**
	 * Is a histogram bar so high that it is clipped from the draw area ?
	 */
	protected boolean barIsClipped_ = false;
	

    /**
     * Constructor.
     * @param view A reference to the listener's view.
     */
    public HistogramPaintListener(AbstractView view) {
        super(view);
    }

    /**
     * Adds points to the graph and draws them to the canvas.
     * @param points The buffer of points to draw.
     * @param nbPoints The number of points in the buffer.
       @author Philippe Sawicki, modified by Ali Jawhar
     */
    public void addPoints(ChartPoint[] points, int nbPoints) {
        points_ = points;
        nbPoints_ = nbPoints;
        
        // These lines must stay at the end of this function :
        redraw_ = true;
        Display.getDefault().syncExec(new Runnable() {
            public void run() {
            	try {
	            	postAddDraw();
	                view_.redraw();
            	} catch (SWTException e) {
            		// This exception will be thrown if the user closes the view
            		// while it is receiving data from the Analyser.
            		
            		// ...
            	}
            }
        });
    }
    
    public void postAddDraw() {
    	if (nbPoints_ == 0 || points_ == null)
    		return;
    	
    	/**
    	 * @todo Rethink this way of redrawing the histogram, because it starts getting crazy about here...
    	 */
    	double zoomFactor = view_.getZoomFactor();
    	
    	// Calculate the vertical axis factor and see if it has changed
    	double tmpDelta = delta;
    	delta = 0;
		if (Long.toString(view_.getYMax()/(long)zoomFactor).length() > MAX_CHAR_VERTICAL_DISPLAY){
			delta = Long.toString(view_.getYMax()/(long)zoomFactor).length() - MAX_CHAR_VERTICAL_DISPLAY;
		}
		if (tmpDelta != delta) {
			view_.clearBackground();
		}
		
		paintBackground();
    	paintVerticalAxis();
    	paintHorizontalAxis();
    	
    	axisImage_.setForeground(dataColor_);
        axisImage_.setBackground(dataColor_);

        //axisImage_.setBackground(backgroundColor_);
        // 1.a Iterate over the points, from 0 to nbPoints    
        // 1.b Find the max counter value

        long maxValue = points_[0].getY(); 
        for (int i = 1; i < nbPoints_; i++) {
        	if (points_[i].getY() > maxValue) {
        		maxValue = points_[i].getY();
        	}
        }
       
        // 2. Assign the max value to the "yMax_" class attribute
        view_.setYMax(maxValue);// set the maximum vertical value
       
        // 3. Draw the histogram bars using "axisImage_.fillRectangle(...)"
        // width of the plot area
        double width = clientArea_.width - 2.0*padding_ - verticalAxisOffset_;
        // height of the plot area
        double height = clientArea_.height - 2.0*padding_ - horizontalAxisYOffset_ - 1;
        
        double yMin = view_.getYMin();
        double yMax = view_.getYMax();
        double barWidth = width/(nbPoints_);
        
        boolean oneBarIsClipped = false;
        
        for (int i = 0; i < nbPoints_; i++) {
        	double pointY = points_[i].getY();
        	
        	// in pixels
        	double x = padding_ + i*barWidth + verticalAxisOffset_ + 1;
        	if (i == nbPoints_-1)
        		x -= 1.0;
        	double barHeight = zoomFactor * ((pointY-yMin) / (yMax-yMin)) * height;
        	
        	if (barHeight > height + 1) {
        		barHeight = height;
        		oneBarIsClipped = true;
        		
        		Image image = AbstractUIPlugin.imageDescriptorFromPlugin(
    					Messages.getString("LatencyView.tmf.UI"), 
    					"icons/warning.gif").createImage(Display.getCurrent());
        		axisImage_.drawImage(image, 5, 3);
        	}
        	
        	// Only draw the bars that have a barHeight of more than 1 pixel
        	if (barHeight >= 1) {
        		double y = 2*padding_ + height - barHeight;
        		axisImage_.setBackground(dataColor_);
        		
        		if (barHeight > height-1) {
        			axisImage_.fillRectangle((int)x, (int)y, (int)barWidth+1, (int)(barHeight+1));
        		} else {
        			axisImage_.fillRectangle((int)x, (int)y, (int)barWidth+1, (int)(barHeight+2));
        		}
        	}
        }
        
        if (oneBarIsClipped)
        	barIsClipped_ = true;
        else
        	barIsClipped_ = false;
    }

	/**
	 * Clears the image and prepares it for redrawing.
	 */
    public void clearPoints() {
    	points_ = new ChartPoint[nbPoints_];
    	for (int i = 0; i < points_.length; i++) {
    		points_[i] = new ChartPoint(0, 0);
    	}
    	//nbPoints_ = 0;
    	
    	view_.askForRedraw();
    }

    /**
	 * Paints the histogram horizontal axis values in engineering notation in which the exponent is a multiple of three.
	 * @param value The numeric value to convert to engineering notation.
	 * @return The given value formatted according to the engineering notation.
	 */
    public String formatStringForHorizontalAxis(long value) {
    	DecimalFormat formatter = new DecimalFormat("##0.#E0"); 
		return formatter.format(value);
	}
    
    /**
     * Returns the histogram's data points.
     * @return The histogram's data points.
     */
    public ChartPoint[] getPoints() {
    	return points_;
    }
    
    /**
     * Returns the histogram's number of data points.
     * @return The histogram's number of data points.
     */
    public int getNBPoints() {
    	return nbPoints_;
    }
    
    /**
     * Returns the histogram's bar Width.
     * @return The histogram's bar Width.
     */
    public double getBarWidth() {
    	if (clientArea_ == null)
    		return Config.HISTOGRAM_BAR_WIDTH;
    	return (clientArea_.width - 2.0*padding_ - verticalAxisOffset_) / nbPoints_;
    }
    
    /**
     * Returns "true" if a histogram bar is so high that it cannot be drawn in the draw area, "false" otherwise.
     * @return "true" if a histogram bar is so high that it cannot be drawn in the draw area, "false" otherwise.
     */
    public boolean barIsClipped() {
    	return barIsClipped_;
    }
    
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.listeners;

import org.eclipse.linuxtools.lttng.ui.views.latency.AbstractView;


/**
 * Displays a tooltip showing the approximate values of the point under
 * the mouse cursor.
 * 
 * @author Philippe Sawicki
 */
public class TimePointerListener extends AbstractMouseListener {
	
	/**
	 * A reference to the observed view.
	 */
	protected AbstractView view_;
	
	/**
	 * A reference to the HistogramPaintListener.
	 */
	protected GraphPaintListener graph_ ;
	
	
	/**
	 * Constructor.
	 * @param view A reference to the observed view.
	 * @param histogramPaintListener A reference to the histogram's paintListener.
	 */
	public TimePointerListener(AbstractView view, GraphPaintListener graphPaintListener) {
		view_ = view;
		graph_ = graphPaintListener;
	}

	@Override
	protected void display() {
		long chartWidth  = (long) graph_.getWidth();
		long chartHeight = (long) graph_.getHeight();
		
		mouseX_ -= graph_.getPadding() + graph_.getVerticalAxisOffset();
		mouseY_ -= graph_.getPadding() + graph_.getPaddingTop() + 1 ;
		mouseY_ = chartHeight - mouseY_; // Reverse the coordinates since (0;0) is a the top of the screen
		
		long xMin = view_.getXMin();
		long xMax = view_.getXMax();
		long yMin = view_.getYMin();
		long yMax = view_.getYMax();
		
		long xValue = mouseX_ * (xMax - xMin) / chartWidth  + xMin;
		long yValue = mouseY_ * (yMax - yMin) / chartHeight + yMin;
		
		if (mouseX_ > 0 && mouseX_ < chartWidth
			&& mouseY_ > 0 && mouseY_ < chartHeight
			&& xValue != 0L && yValue != 0L
			&& xValue != Long.MAX_VALUE && yValue != Long.MAX_VALUE) {
			view_.setToolTipText("(x;y) ≈ (" + xValue + ";" + yValue + ")");
		} else {
			view_.setToolTipText("");
		}
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.listeners;

import org.eclipse.linuxtools.lttng.ui.views.latency.AbstractView;
import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;


/**
 * Tooltip listener, displays the event count for each latency selected 
 * by the mouse click area on histogram.
 * 
 * @author Ali Jawhar
 */
public class TooltipListener extends AbstractMouseListener {
	
	/**
	 * A reference to the observed view.
	 */
	protected AbstractView view_;
	
	/**
	 * A reference to the HistogramPaintListener.
	 */
	protected HistogramPaintListener histogram_ ;
	
	/**
	 * Is the mouse over the warning icon, indicating that a bar is higher than the draw area due to zooming ?
	 */
	boolean displayWarning_ = false;
	
	
	/**
	 * Constructor.
	 * @param view A reference to the observed view.
	 * @param histogramPaintListener A reference to the histogram's paintListener.
	 */
	public TooltipListener(AbstractView view, HistogramPaintListener histogramPaintListener) {
		view_ = view;
		histogram_ = histogramPaintListener;
	}
	
	@Override
	protected void display() {
		displayWarningTooltip();
		displayTooltip();
	}
	
	/**
	 * Displays a tooltip if the mouse is over the warning icon indication that a bar cannot be draw entirely
	 * due to the zoom factor.
	 */
	protected void displayWarningTooltip() {
		if (histogram_.barIsClipped()
			&& mouseX_ > 5 && mouseX_ < 21
			&& mouseY_ > 3 && mouseY_ < 18) {
			view_.setToolTipText("One or more bars is higher than the draw area due to zooming.");
			displayWarning_ = true;
		} else {
			displayWarning_ = false;
		}
	}
	
	/**
	 * Displays the tooltip showing the details of the histogram bar pointed
	 * by the mouse.
	 */
	protected void displayTooltip() {
		double barWidth = histogram_.getBarWidth();
		double height   = histogram_.getHeight();     // height of the plot area
		long yMin = view_.getYMin();
		long yMax = view_.getYMax();
		double zoomFactor = view_.getZoomFactor();
		int padding = histogram_.getPadding();
		int verticalAxisOffset = histogram_.getVerticalAxisOffset();
		ChartPoint[] points = histogram_.getPoints();
		int nbPoints = histogram_.getNBPoints();
		int index = (int)((mouseX_ - padding - verticalAxisOffset)/barWidth);
		
		double barHeight = 0.0;
		if (index >= 0 && index < nbPoints) {
			barHeight = (zoomFactor * height*(points[index].getY()-yMin) / (yMax-yMin));
		}
		mouseY_ = (long)height - (mouseY_ - 2*padding);
		
		// Verifying mouse pointer is over histogram bar
		if (index >= 0 && index < nbPoints && mouseY_ < barHeight && mouseY_ < height && mouseX_ > (verticalAxisOffset+padding)) {
			if (index+1 < nbPoints){
				view_.setToolTipText("(lat;#evt) = (["+points[index].getX()+ ","+(points[index+1].getX()-1)+"] ; " + points[index].getY() + ")");
			} else {
				long delta = points[index].getX() - points[index-1].getX();
				view_.setToolTipText("(lat;#evt) = (["+points[index].getX()+ ","+(points[index].getX()+delta-1)+"] ; " + points[index].getY() + ")");
			}
	    } else if (displayWarning_ == false) {
			view_.setToolTipText("");
		}
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.latency.listeners;

import org.eclipse.linuxtools.lttng.ui.views.latency.AbstractView;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;

/**
 * Canvas zoom listener.
 * 
 * @author Philippe Sawicki
 */
public class ZoomListener implements Listener {
	
	/**
	 * A reference to the observed view.
	 */
	protected AbstractView view_;
	/**
	 * Default zoom factor.
	 */
	protected int zoomFactor_;
	/**
	 * Zoom increment.
	 */
	protected int zoomIncrement_ = 30;
	
	
	/**
	 * Constructor.
	 * @param view A reference to the observed view.
	 * @param defaultZoomFactor Default zoom factor.
	 */
	public ZoomListener(AbstractView view, int defaultZoomFactor) {
		view_ = view;
		zoomFactor_ = defaultZoomFactor;
	}
	
	/**
	 * Constructor.
	 * @param view A reference to the observed view.
	 */
	public ZoomListener(AbstractView view) {
		this(view, 0);
	}

	/**
	 * Handles the event.
	 */
	public void handleEvent(Event event) {
		switch (event.type) {
			case SWT.MouseWheel:
				/**
				 * @todo Find a better way to get the mouse wheel scroll direction
				 */
				boolean scrollDown = (event.count == 0 ? false : (event.count > 0 ? false : true));
				int zoomStep = zoomIncrement_;
				if (scrollDown)
					zoomStep = -zoomIncrement_;
				zoomFactor_ = Math.max(0, zoomFactor_ + zoomStep);
				
				Canvas canvas = (Canvas)event.widget;
				if (view_ != null){
					// clear the background to allow redraw of values of the vertical axis. 
					view_.clearBackground();
					view_.redrawTitle();
					view_.askForRedraw();
				}
				canvas.redraw();
				break;
		}
	}
	
	/**
	 * Returns the zoom factor.
	 * @return The zoom factor.
	 */
	public int getZoomFactor() {
		if (zoomFactor_ < 1)
			return 1;
		else
			return zoomFactor_;
	}
	
	/**
	 * Returns the zoom increment.
	 * @return The zoom increment.
	 */
	public int getZoomIncrement() {
		return zoomIncrement_;
	}
	
	/**
	 * Sets the zoom increment.
	 * @param zoomIncrement The new zoom increment.
	 */
	public void setZoomIncrement(int zoomIncrement) {
		zoomIncrement_ = zoomIncrement;
	}
	
}




LatencyView.Action.IncreaseBarWidth.Tooltip=Increase histogram bar width
LatencyView.Action.DecreaseBarWidth.Tooltip=Decrease histogram bar width
LatencyView.Action.AddEvents.Tooltip=Add matching events
LatencyView.Action.DeleteEvents.Tooltip=Deleted matching events
LatencyView.Action.ListEvents.Tooltip=List matching events
LatencyView.Dialogs.AddEvents.Title=Add event pairs
LatencyView.Dialogs.AddEvents.Message=Select a pair of events to add it to the match list :
LatencyView.Dialogs.AddEvents.Buttons.Add=Add
LatencyView.Dialogs.AddEvents.Buttons.Close=Close
LatencyView.Dialogs.AddEvents.Columns.Start=Start event types
LatencyView.Dialogs.AddEvents.Columns.End=End event types
LatencyView.Dialogs.AddEvents.Columns.List.Trigger=Trigger event type
LatencyView.Dialogs.AddEvents.Columns.List.End=End event type
LatencyView.Dialogs.AddEvents.Errors.NoSelection=You must select one item from both lists.
LatencyView.Dialogs.AddEvents.Errors.StartNotSelected=You must select one item from the start event list.
LatencyView.Dialogs.AddEvents.Errors.EndNotSelected=You must select one item from the end event list.
LatencyView.Dialogs.AddEvents.Errors.SameSelected=The same event cannot be selected in both list at the same time.
LatencyView.Dialogs.AddEvents.Errors.AlreadyMatched=The start and end events are already matched.
LatencyView.Dialogs.AddEvents.Errors.StartAlreadyMatched=The start event is already matched.
LatencyView.Dialogs.AddEvents.Errors.EndAlreadyMatched=The end event is already matched.
LatencyView.Dialogs.AddEvents.Errors.StartAsEnd=The start event is already matched as an end event.
LatencyView.Dialogs.AddEvents.Errors.EndAsStart=The end event is already matched as a start event.
LatencyView.Dialogs.DeleteEvents.Title=Delete event pairs
LatencyView.Dialogs.DeleteEvents.Message=Select a pair of matched events to remove it from the list :
LatencyView.Dialogs.DeleteEvents.Buttons.Close=Close
LatencyView.Dialogs.DeleteEvents.Buttons.Delete=Delete
LatencyView.Dialogs.DeleteEvents.Confirm.Title=Confirm event deletion
LatencyView.Dialogs.DeleteEvents.Confirm.Message=Are you sure you want to delete these event pairs?
LatencyView.Dialogs.ListEvents.Title=Matched events list
LatencyView.Dialogs.ListEvents.Message=List of matched events for latency computation :
LatencyView.Dialogs.ListEvents.Buttons.Close=Close
LatencyView.Dialogs.ListEvents.Buttons.Reset=Reset to default pairs
LatencyView.Dialogs.ListEvents.Columns.Trigger=Trigger event type
LatencyView.Dialogs.ListEvents.Columns.End=End event type
LatencyView.Dialogs.ListEvents.Confirm.Title=Confirm pairs reset
LatencyView.Dialogs.ListEvents.Confirm.Message=Are you sure you want to reset the event pairs to their default values?
LatencyView.Graphs.Graph.Title=Latency VS Time
LatencyView.Graphs.Graph.XAxisLabel=time (ns)
LatencyView.Graphs.Graph.YAxisLabel=latency (ms)
LatencyView.Graphs.Histogram.Title=Latency Distribution
LatencyView.Graphs.Histogram.XAxisLabel=latency (ns)
LatencyView.Graphs.Histogram.YAxisLabel=# events
LatencyView.msgSlogan=Latency View
LatencyView.tmf.UI=org.eclipse.linuxtools.lttng.ui




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis;


/**
 * Configuration class, holds some application constants.
 * 
 * @author Philippe Sawicki
 */
public class Config {
	
	/**
	 * Private constructor to defeat instantiation.
	 */
	private Config() { }
	
	
	/**
	 * Size of the point buffer holding point values before sending them to the view.
	 */
	public static final int POINT_BUFFER_SIZE = 5000;
	
	/**
	 * Histogram bar width.
	 */
	public static int HISTOGRAM_BAR_WIDTH = 5;
	
	/**
	 * Diameter of a point drawn on the chart (in pixels).
	 */
	public static final int GRAPH_POINT_DIAMETER = 1;
	
	/**
	 * Graph padding.
	 */
	public static final int GRAPH_PADDING = 10;
	
	/**
	 * Write computed data value to .csv files ?
	 */
	public static final boolean WRITE_COMPUTED_DATA_TO_FILE = false;
	
	/**
	 * Print all debug info to the console ?
	 */
	public static final boolean PRINT_ALL = false;
	
	/**
	 * Print state changes info to the console ?
	 */
	public static final boolean PRINT_STATE_CHANGES = (PRINT_ALL ? true : false);
	/**
	 * Print state constructors info to the console ?
	 */
	public static final boolean PRINT_STATE_CONSTRUCTOR = (PRINT_ALL ? true : false);
	
	/**
	 * Print counter state info to the console ?
	 */
	public static final boolean PRINT_COUNTER_STATE_STATUS = (PRINT_ALL ? true : false);
	/**
	 * Print empty state info to the console ?
	 */
	public static final boolean PRINT_EMPTY_STATE_STATUS = (PRINT_ALL ? true : false);
	/**
	 * Print time range state info to the console ?
	 */
	public static final boolean PRINT_TIMERANGE_STATE_STATUS = (PRINT_ALL ? true : false);
	
	/**
	 * Print graph view info to the console ?
	 */
	public static final boolean PRINT_GRAPH_VIEW_STATUS = (PRINT_ALL ? true : false);
	/**
	 * Print histogram view info to the console ?
	 */
	public static final boolean PRINT_HISTO_VIEW_STATUS = (PRINT_ALL ? true : false);
	
	/**
	 * Print added points info to the console ?
	 */
	public static final boolean PRINT_INTERFACE_POINT_ADD = (PRINT_ALL ? false : false);
	
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis;

import java.util.Vector;

import org.eclipse.linuxtools.lttng.analysis.analyser.Analyser;
import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.Pair;
import org.eclipse.linuxtools.lttng.ui.views.latency.AbstractView;
import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;
import org.eclipse.linuxtools.lttng.ui.views.latency.GraphView;
import org.eclipse.linuxtools.lttng.ui.views.latency.HistogramView;
import org.eclipse.linuxtools.lttng.ui.views.latency.handlers.ViewHandler;


/**
 * Interface mediator.
 * 
 * @author Philippe Sawicki
 */
public class InterfaceMediator implements ViewHandler {
	
	/**
	 * Class instance (Singleton pattern).
	 */
	private static InterfaceMediator instance_;
	
	/**
	 * List of graph views registered for analyser updates.
	 */
	private Vector<GraphView> graphViews_;
	/**
	 * List of histogram views registered for analyser updates.
	 */
	private Vector<HistogramView> histogramViews_;
	
	/**
	 * Graph point buffer.
	 */
	private ChartPoint[] graphPoints_;
	/**
	 * Histogram point buffer.
	 */
	private ChartPoint[] histogramPoints_;
	/**
	 * Point counter.
	 */
	private int pointCounter_;

	/**
	 * The number of bars available in the histogram views.
	 */
	protected int nbBars_;
	
	
	/**
	 * Private constructor to defeat instantiation (Singleton pattern).
	 */
	private InterfaceMediator() {
		graphViews_     = new Vector<GraphView>();
		histogramViews_ = new Vector<HistogramView>();
		
		graphPoints_     = new ChartPoint[Config.POINT_BUFFER_SIZE];
		pointCounter_ = 0;
	}
	
	/**
	 * Returns an instance of the InterfaceMediator (Singleton pattern).
	 * @return An instance of the InterfaceMediator.
	 */
	public static InterfaceMediator getInstance() {
		if (instance_ == null)
			instance_ = new InterfaceMediator();
		return instance_;
	}
	
	/**
	 * Releases the instance of the InterfaceMediator.
	 */
	public static void releaseInstance() {
		instance_ = null;
	}
	
	/**
	 * Registers a graph view to be notified of updates.
	 * @param view The graph view to notify about updates.
	 */
	public void registerGraphView(GraphView view) {
		view.setViewHandler(this);
		graphViews_.add(view);
	}
	
	/**
	 * Registers a histogram view to be notified of updates.
	 * @param view The histogram view to notify about updates.
	 */
	public void registerHistogramView(HistogramView view) {
		view.setViewHandler(this);
		histogramViews_.add(view);
	}
	
	/**
	 * Unregisters the views from the mediator.
	 */
	public void unregisterViews() {
		// Unregister the InterfaceMediator as the view handler from the views.
		for (AbstractView view : graphViews_) {
			view.setViewHandler(null);
		}
		graphViews_.clear();
		
		// Unregister the InterfaceMediator as the view handler from the views.
		for (HistogramView view : histogramViews_) {
			view.setViewHandler(null);
		}
		histogramViews_.clear();
	}
	
	/**
	 * Clears the view.
	 */
	public void clearViews() {
		for (GraphView view : graphViews_) {
			view.clear();
			view.clearBackground();
		}
		for (HistogramView view : histogramViews_) {
			view.clear();
			view.clearBackground();
		}
	}
	
	
	/**
	 * Clears the point buffer.
	 */
	public void clearPointsBuffer() {
		graphPoints_ = new ChartPoint[Config.POINT_BUFFER_SIZE];
		
		pointCounter_ = 0;
	}
	
	/**
	 * Resets the histogram data points.
	 */
	public void clearHistogramData() {
		for (int i = 0; i < histogramViews_.size(); i++) {
			histogramViews_.get(i).clearPoints();
		}
	}
	
	/**
	 * Sets the horizontal axis values for the graph views.
	 * @param xMin The min x-axis value.
	 * @param xMax The max x-axis value.
	 */
	public void pushHorizontalAxisForGraph(long xMin, long xMax) {
		for (AbstractView view : graphViews_) {
			view.setXMin(xMin);
			view.setXMax(xMax);
		}
	}
	
	/**
	 * Sets the vertical axis values for the graph views.
	 * @param yMin The min y-axis value.
	 * @param yMax The max y-axis value.
	 */
	public void pushVerticalAxisForGraph(long yMin, long yMax) {
		for (AbstractView view : graphViews_) {
			view.setYMin(yMin);
			view.setYMax(yMax);
		}
	}
	
	/**
	 * Sets the horizontal axis values for the histogram views.
	 * @param xMin The min x-axis value.
	 * @param xMax The max x-axis value.
	 */
	public void pushHorizontalAxisForHistogram(long xMin, long xMax) {
		for (AbstractView view : histogramViews_) {
			view.setXMin(xMin);
			view.setXMax(xMax);
		}
	}
	
	/**
	 * Adds a point to the graph views.
	 * @param graphPoint The point to add to the graph views.
	 * @param histogramPoint The point to add to the histogram views.
	 */
	public void addPointToViews(ChartPoint graphPoint, Pair<Integer,ChartPoint> histogramPoint) {
		graphPoints_[pointCounter_] = graphPoint;
		histogramPoints_[histogramPoint.getFirst()] = histogramPoint.getSecond(); 
		pointCounter_++;
		
		if (Config.PRINT_INTERFACE_POINT_ADD)
			System.out.println("Adding a new point to the buffer (size = " + pointCounter_ + ") ; (x;y) = (" + graphPoint.getX() + ";" + graphPoint.getY() + ")");
		
		if (pointCounter_ == Config.POINT_BUFFER_SIZE) {
			pushPointsToViews();
			clearPointsBuffer();
		}
	}
	
	/**
	 * Pushes the point buffer to the views.
	 */
	public void pushPointsToViews() {
		if (pointCounter_ != 0) {
			for (AbstractView view : graphViews_) {
				view.addPoints(graphPoints_, pointCounter_);
			}
		}
		
		for (AbstractView view : histogramViews_) {
			view.addPoints(histogramPoints_, histogramPoints_.length);
		}
	}

	/**
	 * Push the standard latencies array to the histogram views.
	 * @param standardLatencies The standard latencies array to push to the views.
	 */
	public void pushStandardLatenciesToViews(double[] standardLatencies) {
		histogramPoints_ = new ChartPoint[standardLatencies.length];
		for (int i = 0; i < standardLatencies.length; i++) {
			histogramPoints_[i] = new ChartPoint((long)standardLatencies[i], 0L);
		}
	}
	
	/**
	 * Redraws the views.
	 */
	public void redrawViews() {
		for (int i = 0; i < graphViews_.size(); i++) {
			graphViews_.get(i).askForRedraw();
		}
		for (int i = 0; i < histogramViews_.size(); i++) {
			histogramViews_.get(i).askForRedraw();
		}
	}
	
	/**
	 * Returns the maximum number of bars in the histogram views.
	 * @return The maximum number of bars in the histogram views.
	 */
	public int getMaxBarNumberFromViews() {
		return nbBars_;
	}
	
	/**
	 * Analyses the latency for all event types.
	 */
	public void analyseLatencyForAllEvents() {
		Analyser.getInstance().analyseLatencyForAllEvents();
	}

	/**
	 * Sets the number of bars available in the histogram views.
	 * @param nbBars The number of bars available in the histogram views.
	 */
	@Override
	public void notifyNumberOfBars(int nbBars) {
		nbBars_ = nbBars;
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser;

import org.eclipse.linuxtools.lttng.analysis.analyser.states.AnalyserState;
import org.eclipse.linuxtools.lttng.analysis.analyser.states.MinMaxLatencyState;

/**
 * Analyser class, computes latencies in a trace, following the State pattern.
 * 
 * @author Philippe Sawicki
 */
public class Analyser {
	
	/**
	 * Class instance (Singleton pattern).
	 */
	private static Analyser instance_;
	
	/**
	 * Analyser state (State pattern).
	 */
	private AnalyserState state_;
	
	
	/**
	 * Private constructor to defeat instantiation (Singleton pattern).
	 */
	private Analyser() {
		
	}
	
	/**
	 * Returns an instance of the Analyser.
	 * @return An instance of the Analyser.
	 */
	public static Analyser getInstance() {
		if (instance_ == null)
			instance_ = new Analyser();
		return instance_;
	}
	
	/**
	 * Releases the instance of the Analyser.
	 */
	public static void releaseInstance() {
		instance_ = null;
	}
	
	/**
	 * Changes the state of the analyser (State pattern).
	 * @param newState The new state of the analyser.
	 */
	public void changeState(AnalyserState newState) {
		state_ = newState;
		
		if (state_ != null)
			state_.process();
	}
	
	/**
	 * Analyses the latency for all types of events.
	 */
	public void analyseLatencyForAllEvents() {
		// If a state is currently active, cancel it before starting the new one
		if (state_ != null)
			state_.handleCancel();
		changeState( new MinMaxLatencyState() );
	}
	
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser.matcher;

import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;
import java.util.Set;
import java.util.Stack;
import java.util.Vector;

import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.Pair;
import org.eclipse.linuxtools.lttng.event.LttngEvent;


/**
 * Event matching class. Saves events in a list a returns the previously saved
 * event if the currently processed one is its response, so that the latency
 * can be computed by subtracting their respective timestamps.
 * 
 * @author Philippe Sawicki
 */
public class EventMatcher {
	
	/**
	 * Class instance (Singleton pattern).
	 */
	private static EventMatcher instance_ = null;
	
	/**
	 * Stack abstraction, used to save the events in a list.
	 */
	private StackWrapper stack_;
	
	/**
	 * Match table, associates a request class to a response class.
	 */
	private HashMap<String,String> match_;
	/**
	 * Inverse match table, associates a response class to a request class.
	 */
	private HashMap<String,String> inverseMatch_;
	
	/**
	 * The number of events processed.
	 */
	private int processedEvents_;
	/**
	 * The number of events matched.
	 */
	private int matchedEvents_;
	
	/**
	 * Event types identification Strings.
	 */
	public static String
		ADD_TO_PAGE_CACHE         = "add_to_page_cache",
		BIO_BACKMERGE             = "bio_backmerge",
		BIO_FRONTMERGE            = "bio_frontmerge",
		BIO_QUEUE                 = "bio_queue",
		BUFFER_WAIT_END           = "buffer_wait_end",
		BUFFER_WAIT_START         = "buffer_wait_start",
		CALL                      = "call",
		CLOSE                     = "close",
		CORE_MARKER_FORMAT        = "core_marker_format",
		CORE_MARKER_ID            = "core_marker_id",
		DEV_RECEIVE               = "dev_receive",
		DEV_XMIT                  = "dev_xmit",
		END_COMMIT                = "end_commit",
		EXEC                      = "exec",
		FILE_DESCRIPTOR           = "file_descriptor",
		GETRQ                     = "getrq",
		GETRQ_BIO                 = "getrq_bio",
		IDT_TABLE                 = "idt_table",
		INTERRUPT                 = "interrupt",
		IOCTL                     = "ioctl",
		IRQ_ENTRY                 = "irq_entry",
		IRQ_EXIT                  = "irq_exit",
		LIST_MODULE               = "list_module",
		LLSEEK                    = "llseek",
		LSEEK                     = "lseek",
		NAPI_COMPLETE             = "napi_complete",
		NAPI_POLL                 = "napi_poll",
		NAPI_SCHEDULE             = "napi_schedule",
		NETWORK_IPV4_INTERFACE    = "network_ipv4_interface",
		NETWORK_IP_INTERFACE      = "network_ip_interface",
		OPEN                      = "open",
		PAGE_FAULT_ENTRY          = "page_fault_entry",
		PAGE_FAULT_EXIT           = "page_fault_exit",
		PAGE_FAULT_GET_USER_ENTRY = "page_fault_get_user_entry",
		PAGE_FAULT_GET_USER_EXIT  = "page_fault_get_user_exit",
		PAGE_FREE                 = "page_free",
		PLUG                      = "plug",
		POLLFD                    = "pollfd",
		PREAD64                   = "pread64",
		PRINTF                    = "printf",
		PRINTK                    = "printk",
		PROCESS_EXIT              = "process_exit",
		PROCESS_FORK              = "process_fork",
		PROCESS_FREE              = "process_free",
		PROCESS_STATE             = "process_state",
		PROCESS_WAIT              = "process_wait",
		READ                      = "read",
		REMAP                     = "remap",
		REMOVE_FROM_PAGE_CACHE    = "remove_from_page_cache",
		RQ_COMPLETE_FS            = "rq_complete_fs",
		RQ_COMPLETE_PC            = "rq_complete_pc",
		RQ_INSERT_FS              = "rq_insert_fs",
		RQ_INSERT_PC              = "rq_insert_pc",
		RQ_ISSUE_FS               = "rq_issue_fs",
		RQ_ISSUE_PC               = "rq_issue_pc",
		RQ_REQUEUE_PC             = "rq_requeue_pc",
		SCHED_MIGRATE_TASK        = "sched_migrate_task",
		SCHED_SCHEDULE            = "sched_schedule",
		SCHED_TRY_WAKEUP          = "sched_try_wakeup",
		SCHED_WAKEUP_NEW_TASK     = "sched_wakeup_new_task",
		SELECT                    = "select",
		SEM_CREATE                = "sem_create",
		SEND_SIGNAL               = "send_signal",
		SHM_CREATE                = "shm_create",
		SLEEPRQ_BIO               = "sleeprq_bio",
		SOCKET_ACCEPT             = "socket_accept",
		SOCKET_BIND               = "socket_bind",
		SOCKET_CALL               = "socket_call",
		SOCKET_CONNECT            = "socket_connect",
		SOCKET_CREATE             = "socket_create",
		SOCKET_GETPEERNAME        = "socket_getpeername",
		SOCKET_GETSOCKNAME        = "socket_getsockname",
		SOCKET_GETSOCKOPT         = "socket_getsockopt",
		SOCKET_LISTEN             = "socket_listen",
		SOCKET_SETSOCKOPT         = "socket_setsockopt",
		SOCKET_SHUTDOWN           = "socket_shutdown",
		SOCKET_SOCKETPAIR         = "socket_socketpair",
		SOFTIRQ_ENTRY             = "softirq_entry",
		SOFTIRQ_EXIT              = "softirq_exit",
		SOFTIRQ_RAISE             = "softirq_raise",
		SOFTIRQ_VEC               = "softirq_vec",
		START_COMMIT              = "start_commit",
		STATEDUMP_END             = "statedump_end",
		SYS_CALL_TABLE            = "sys_call_table",
	    SYSCALL_ENTRY             = "syscall_entry",
	    SYSCALL_EXIT              = "syscall_exit",
	    TASKLET_LOW_ENTRY         = "tasklet_low_entry",
	    TASKLET_LOW_EXIT          = "tasklet_low_exit",
	    TCPV4_RCV                 = "tcpv4_rcv",
	    TIMER_ITIMER_EXPIRED      = "timer_itimer_expired",
	    TIMER_ITIMER_SET          = "timer_itimer_set",
	    TIMER_SET                 = "timer_set",
	    TIMER_TIMEOUT             = "timer_timeout",
	    TIMER_UPDATE_TIME         = "timer_update_time",
	    UDPV4_RCV                 = "udpv4_rcv",
	    UNPLUG_IO                 = "unplug_io",
	    UNPLUG_TIMER              = "unplug_timer",
	    VM_MAP                    = "vm_map",
	    VPRINTK                   = "vprintk",
	    WAIT_ON_PAGE_END          = "wait_on_page_end",
	    WAIT_ON_PAGE_START        = "wait_on_page_start",
	    WRITE                     = "write",
	    WRITEV                    = "writev";
	
	
	/**
	 * Private constructor to defeat instantiation (Singleton pattern).
	 */
	private EventMatcher() {
		stack_ = new StackWrapper();
		match_ = new HashMap<String,String>();
		inverseMatch_ = new HashMap<String,String>();
		
		processedEvents_ = 0;
		matchedEvents_ = 0;
		
		createMatchTable();
	}
	
	/**
	 * Returns an instance to the EventMatcher class (Singleton pattern).
	 * @return An instance to the EventMatcher class (Singleton pattern).
	 */
	public static EventMatcher getInstance() {
		if (instance_ == null) 
			instance_ = new EventMatcher();
		return instance_;
	}
	
	/**
	 * Releases the instance to the EventMatcher class.
	 */
	public static void releaseInstance() {
		instance_ = null;		
	}
	
	/**
	 * Creates the event matching table, linking a response class to a 
	 * request class.
	 */
	private void createMatchTable() {
		// Build the default matches
		match_.put(PAGE_FAULT_GET_USER_EXIT, PAGE_FAULT_GET_USER_ENTRY);
		match_.put(TASKLET_LOW_EXIT, TASKLET_LOW_ENTRY);
		match_.put(PAGE_FAULT_EXIT, PAGE_FAULT_ENTRY);
		match_.put(SYSCALL_EXIT, SYSCALL_ENTRY);
		match_.put(IRQ_EXIT, IRQ_ENTRY);
		match_.put(WRITE, READ);
		match_.put(CLOSE, OPEN);
		match_.put(BUFFER_WAIT_END, BUFFER_WAIT_START);
		match_.put(END_COMMIT, START_COMMIT);
		match_.put(WAIT_ON_PAGE_END, WAIT_ON_PAGE_START);
		
		// Build the inverse matches based on the matches
		Set<Entry<String,String>> pairs = match_.entrySet();
		Iterator<Entry<String,String>> it = pairs.iterator();
		while (it.hasNext()) {
			Entry<String,String> pair = it.next();
			inverseMatch_.put(pair.getValue(), pair.getKey());
		}
	}
	
	/**
	 * Processes an event received: if it is identified as a response, try to
	 * get its request to remove it from the list. If no request was saved, 
	 * dismiss the current response. If it is a request, save it to the list of
	 * requests waiting for a response.
	 * @param event The event to identify, and maybe process if it is a response.
	 * @return The request event associated with the current event (a response), 
	 * or null if nothing was found (no request associated with this response, or
	 * the event to identify was a request that was added to the list).
	 */
	public LttngEvent process(LttngEvent event) {
		processedEvents_++;
		
		String markerName = event.getMarkerName();
		
		if (match_.containsKey(markerName)) {
			String startEventType = match_.get(markerName);
			Stack<LttngEvent> events = stack_.getStackOf(startEventType);
			
			if (events != null) {
				for (int i = events.size()-1; i >= 0; i--) {
					LttngEvent request = events.get(i);
					
					if (request.getCpuId() == event.getCpuId() &&
						event.getTimestamp().getValue() > request.getTimestamp().getValue()) {
						stack_.removeEvent(startEventType, request);
						matchedEvents_++;
						return request;
					}
				}
			}
			return null;
		} else {
			// Add only if there can later be a match for this request
			if (match_.containsValue(event.getMarkerName())) {
				stack_.put(event.clone());
			}
			return null;
		}
	}
	
	/**
	 * Clears the stack content.
	 */
	public void clearStack() {
		stack_.clear();
		
		// Reset the processed and matched events counter
		processedEvents_ = 0;
		matchedEvents_   = 0;
	}
	
	/**
	 * Resets all.
	 */
	public void resetMatches() {
		match_.clear();
		inverseMatch_.clear();
		
		stack_.clear();
		
		// Reset the processed and matched events counter
		processedEvents_ = 0;
		matchedEvents_   = 0;
	}

	/**
	 * Returns the list of start events.
	 * @return The list of start events.
	 */
	public Collection<String> getStartEvents() {
		return match_.values();
	}

	/**
	 * Returns the list of end events.
	 * @return The list of end events.
	 */
	public Set<String> getEndEvents() {
		return match_.keySet();
	}
	
	/**
	 * Returns the alphabetically-sorted list of start/end events pairs.
	 * @return The alphabetically-sorted list of start/end events pairs.
	 */
	public Pair<Vector<String>,Vector<String>> getEvents() {
		Vector<String> start = new Vector<String>( getStartEvents() );
		Vector<String> end   = new Vector<String>( match_.size() );
		
		Collections.sort(start);
		for (int i = 0; i < start.size(); i++) {
			end.add( inverseMatch_.get(start.get(i)) );
		}
		
		return new Pair<Vector<String>,Vector<String>>(start, end);
	}
	
	/**
	 * Adds a match to the list of events pairs.
	 * @param startType The start event type.
	 * @param endType The end event type.
	 */
	public void addMatch(String startType, String endType) {
		match_.put(endType, startType);
		inverseMatch_.put(startType, endType);
	}

	/**
	 * Removes a matched pair based on the their type.
	 * 
	 * <b>Note :</b> For now, only the pair's end type is used, since a type
	 * can only be either one start or one end. This function takes both types
	 * to account for the future, if a pairing process ever becomes more complex.
	 * 
	 * @param startType The type of the pair's start type.
	 * @param endType The type of the pair's end type.
	 */
	public void removeMatch(String startType, String endType) {
		match_.remove(endType);
		inverseMatch_.remove(startType);
	}
	
	/**
	 * Returns the list of all event possible types.
	 * @return The list of all event possible types.
	 */
	public Vector<String> getTypeList() {
		// Reserve some space for the 103 default event types.
		Vector<String> eventsList = new Vector<String>(103);
		
		eventsList.add(ADD_TO_PAGE_CACHE);
		eventsList.add(BIO_BACKMERGE);
		eventsList.add(BIO_FRONTMERGE);
		eventsList.add(BIO_QUEUE);
		eventsList.add(BUFFER_WAIT_END);
		eventsList.add(BUFFER_WAIT_START);
		eventsList.add(CALL);
		eventsList.add(CLOSE);
		eventsList.add(CORE_MARKER_FORMAT);
		eventsList.add(CORE_MARKER_ID);
		eventsList.add(DEV_RECEIVE);
		eventsList.add(DEV_XMIT);
		eventsList.add(END_COMMIT);
		eventsList.add(EXEC);
		eventsList.add(FILE_DESCRIPTOR);
		eventsList.add(GETRQ);
		eventsList.add(GETRQ_BIO);
		eventsList.add(IDT_TABLE);
		eventsList.add(INTERRUPT);
		eventsList.add(IOCTL);
		eventsList.add(IRQ_ENTRY);
		eventsList.add(IRQ_EXIT);
		eventsList.add(LIST_MODULE);
		eventsList.add(LLSEEK);
		eventsList.add(LSEEK);
		eventsList.add(NAPI_COMPLETE);
		eventsList.add(NAPI_POLL);
		eventsList.add(NAPI_SCHEDULE);
		eventsList.add(NETWORK_IPV4_INTERFACE);
		eventsList.add(NETWORK_IP_INTERFACE);
		eventsList.add(OPEN);
		eventsList.add(PAGE_FAULT_ENTRY);
		eventsList.add(PAGE_FAULT_EXIT);
		eventsList.add(PAGE_FAULT_GET_USER_ENTRY);
		eventsList.add(PAGE_FAULT_GET_USER_EXIT);
		eventsList.add(PAGE_FREE);
		eventsList.add(PLUG);
		eventsList.add(POLLFD);
		eventsList.add(PREAD64);
		eventsList.add(PRINTF);
		eventsList.add(PRINTK);
		eventsList.add(PROCESS_EXIT);
		eventsList.add(PROCESS_FORK);
		eventsList.add(PROCESS_FREE);
		eventsList.add(PROCESS_STATE);
		eventsList.add(PROCESS_WAIT);
		eventsList.add(READ);
		eventsList.add(REMAP);
		eventsList.add(REMOVE_FROM_PAGE_CACHE);
		eventsList.add(RQ_COMPLETE_FS);
		eventsList.add(RQ_COMPLETE_PC);
		eventsList.add(RQ_INSERT_FS);
		eventsList.add(RQ_INSERT_PC);
		eventsList.add(RQ_ISSUE_FS);
		eventsList.add(RQ_ISSUE_PC);
		eventsList.add(RQ_REQUEUE_PC);
		eventsList.add(SCHED_MIGRATE_TASK);
		eventsList.add(SCHED_SCHEDULE);
		eventsList.add(SCHED_TRY_WAKEUP);
		eventsList.add(SCHED_WAKEUP_NEW_TASK);
		eventsList.add(SELECT);
		eventsList.add(SEM_CREATE);
		eventsList.add(SEND_SIGNAL);
		eventsList.add(SHM_CREATE);
		eventsList.add(SLEEPRQ_BIO);
		eventsList.add(SOCKET_ACCEPT);
		eventsList.add(SOCKET_BIND);
		eventsList.add(SOCKET_CALL);
		eventsList.add(SOCKET_CONNECT);
		eventsList.add(SOCKET_CREATE);
		eventsList.add(SOCKET_GETPEERNAME);
		eventsList.add(SOCKET_GETSOCKNAME);
		eventsList.add(SOCKET_GETSOCKOPT);
		eventsList.add(SOCKET_LISTEN);
		eventsList.add(SOCKET_SETSOCKOPT);
		eventsList.add(SOCKET_SHUTDOWN);
		eventsList.add(SOCKET_SOCKETPAIR);
		eventsList.add(SOFTIRQ_ENTRY);
		eventsList.add(SOFTIRQ_EXIT);
		eventsList.add(SOFTIRQ_RAISE);
		eventsList.add(SOFTIRQ_VEC);
		eventsList.add(START_COMMIT);
		eventsList.add(STATEDUMP_END);
		eventsList.add(SYS_CALL_TABLE);
		eventsList.add(SYSCALL_ENTRY);
		eventsList.add(SYSCALL_EXIT);
		eventsList.add(TASKLET_LOW_ENTRY);
		eventsList.add(TASKLET_LOW_EXIT);
		eventsList.add(TCPV4_RCV);
		eventsList.add(TIMER_ITIMER_EXPIRED);
		eventsList.add(TIMER_ITIMER_SET);
		eventsList.add(TIMER_SET);
		eventsList.add(TIMER_TIMEOUT);
		eventsList.add(TIMER_UPDATE_TIME);
		eventsList.add(UDPV4_RCV);
		eventsList.add(UNPLUG_IO);
		eventsList.add(UNPLUG_TIMER);
		eventsList.add(VM_MAP);
		eventsList.add(VPRINTK);
		eventsList.add(WAIT_ON_PAGE_END);
		eventsList.add(WAIT_ON_PAGE_START);
		eventsList.add(WRITE);
		eventsList.add(WRITEV);
		
		return eventsList;
	}
	
	/**
	 * Returns the number of events processed.
	 * @return The number of events processed.
	 */
	public int getNBProcessedEvents() {
		return processedEvents_;
	}
	
	/**
	 * Returns the number of events matched.
	 * @return The number of events matched.
	 */
	public int getNBMatchedEvents() {
		return matchedEvents_;
	}
	
	/**
	 * Prints the stack content to the console.
	 */
	public void print() {
		stack_.printContent();
	}
	
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser.matcher;

import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Set;
import java.util.Stack;

import org.eclipse.linuxtools.lttng.event.LttngEvent;


/**
 * Stack pile.
 * 
 * TODO Change the types of the HashMaps from <String,String> to 
 * <Integer,Integer>, in order to take advantage of the compilation-time
 * String.hashCode() speedup over execution-time String hash computation.
 * 
 * @author Philippe Sawicki
 */
public class StackWrapper {
	
	/**
	 * Hash map of event stacks.
	 */
	private HashMap<String,Stack<LttngEvent>> stacks_ = null;
	
	
	/**
	 * Constructor.
	 */
	public StackWrapper() {
		stacks_ = new HashMap<String,Stack<LttngEvent>>();
	}
	
	/**
	 * Adds an event to the list of events of the same type.
	 * @param event The event to add to the list.
	 */
	public void put(LttngEvent event) {
		String key = event.getMarkerName();
		
		if (stacks_.containsKey(key)) {
			stacks_.get(key).add(event);
		} else {
			Stack<LttngEvent> newStack = new Stack<LttngEvent>();
			newStack.add(event);
			stacks_.put(key, newStack);
		}
	}
	
	/**
	 * Checks if the stack contains a list of events of the given type.
	 * @param key The type of events to check for.
	 * @return "true" if the stack contains events of the given type, "false" otherwise.
	 */
	public boolean containsKey(String key) {
		return stacks_.containsKey(key);
	}
	
	/**
	 * Returns the list of events of the given type.
	 * @param key The type of events to return.
	 * @return The list of events of the given type, or null.
	 */
	public Stack<LttngEvent> getStackOf(String key) {
		if (stacks_.containsKey(key)) {
			return stacks_.get(key);
		} else {
			return null;
		}
	}
	
	/**
	 * Removes the given event from the given stack list.
	 * @param key The given stack type.
	 * @param event The event to remove from the given stack type.
	 * @return "true" if the event was removed, "false" otherwise.
	 */
	public boolean removeEvent(String key, LttngEvent event) {
		Stack<LttngEvent> stack = stacks_.get(key);
		
		boolean removed = false;

		try {
			/**
			 * TODO Correct this...
			 * Here, no matter what CPU or other content field, we always 
			 * remove the last event added to the stack. Should be 
			 * something like :
			 * return stack.remove(event);
			 */
			stack.pop();
			removed = true;
		} catch (Exception e) {
			e.printStackTrace();
		}

		// Remove the stack from the stack list if it is empty
		if (stack.isEmpty()) {
			stacks_.remove(key);
		}
		
		return removed;
	}
	
	/**
	 * Clears the stack content.
	 */
	public void clear() {
		stacks_.clear();
	}
	
	/**
	 * Prints the content of the stack to the console.
	 */
	public void printContent() {
		Collection<Stack<LttngEvent>> values = stacks_.values();
		Iterator<Stack<LttngEvent>> valueIt = values.iterator();
		
		Set<String> keys = stacks_.keySet();
		Iterator<String> keyIt = keys.iterator();
		
		while ( valueIt.hasNext() && keyIt.hasNext() ) {
			Stack<LttngEvent> stack = valueIt.next();
			
			System.out.println( "   " + keyIt.next() + " [" + stack.size() + "] : " + stack );
		}
	}
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser.states;

import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.analysis.InterfaceMediator;
import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
import org.eclipse.linuxtools.lttng.analysis.facade.DataHandler;


/**
 * Abstract analyser state.
 * 
 * @author Philippe Sawicki
 */
public abstract class AnalyserState extends DataHandler {
	
	/**
	 * State name.
	 */
	protected String stateName_;
	
	/**
	 * The state's next state.
	 */
	protected AnalyserState nextState_;
	
	/**
	 * Is the state cancelled ?
	 */
	protected boolean isCancelled_ = false;
	
	
	/**
	 * Abstract analyser state constructor.
	 * @param stateName The state name.
	 * @param nextState The state's next state.
	 */
	public AnalyserState(String stateName, AnalyserState nextState) {
		stateName_ = stateName;
		nextState_ = nextState;
		
		if (Config.PRINT_STATE_CONSTRUCTOR)
			System.out.println("[" + stateName_ + "]");
	}
	
	/**
	 * Abstract analyser state constructor.
	 * @param stateName The state name.
	 */
	public AnalyserState(String stateName) {
		this(stateName, null);
		
		isCancelled_ = false;
	}
	
	/**
	 * Process the state.
	 */
	public abstract void process();
	
	/**
	 * Cancel the state's activity (i.e. clear the stack and redraw the views).
	 */
	public void handleCancel() {
		isCancelled_ = true;
		
		EventMatcher.getInstance().clearStack();
		InterfaceMediator.getInstance().clearHistogramData();
		InterfaceMediator.getInstance().clearPointsBuffer();
		InterfaceMediator.getInstance().clearViews();
	}
	
	/**
	 * Returns the state's name.
	 * @return The state's name.
	 */
	public String getName() {
		return stateName_;
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser.states;

import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.analysis.InterfaceMediator;
import org.eclipse.linuxtools.lttng.analysis.analyser.Analyser;
import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.EventCountPerLatency;
import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.Pair;
import org.eclipse.linuxtools.lttng.analysis.facade.TraceFacade;
import org.eclipse.linuxtools.lttng.event.LttngEvent;
import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;
import org.eclipse.linuxtools.lttng.ui.views.latency.LatencyView;
import org.eclipse.linuxtools.tmf.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.experiment.TmfExperiment;


/**
 * Counts the event latencies.
 * 
 * @author Philippe Sawicki
 */
public class CounterState extends AnalyserState {
	
	/**
	 * Event counter, used to generate bar graphs.
	 */
	private EventCountPerLatency eventCounter_;
	
	/**
	 * Min trace latency.
	 */
	private long minLatency_;
	/**
	 * Max trace latency.
	 */
	private long maxLatency_;
	

	/**
	 * Constructor.
	 * @param minLatency Min trace latency.
	 * @param maxLatency Max trace latency.
	 */
	public CounterState(long minLatency, long maxLatency) {
		super("Counter state");
		
		minLatency_ = minLatency;
		maxLatency_ = maxLatency;
		
		eventCounter_ = new EventCountPerLatency();
		
		int nbBars = InterfaceMediator.getInstance().getMaxBarNumberFromViews();
		eventCounter_.generateStandardLatencies(minLatency_, maxLatency_, nbBars);
		InterfaceMediator.getInstance().pushStandardLatenciesToViews( eventCounter_.getStandardLatencies() );
	}

	@Override
	public void process() {
		if (Config.PRINT_COUNTER_STATE_STATUS)
			System.out.println("  CounterState.process()");

		TmfExperiment<LttngEvent> experiment = LatencyView.getExperiment();
		
		TmfTimeRange timeRange = LatencyView.getTimeRange();
		
		TraceFacade.getInstance().getAllEvents(experiment, timeRange, this);
	}

	@Override
	public void handleData(LttngEvent event) {
		if (isCancelled_)
			return;
		
		LttngEvent startEvent = EventMatcher.getInstance().process(event);
		
		if (startEvent != null) {
			long latency = event.getTimestamp().getValue() - startEvent.getTimestamp().getValue();
			ChartPoint timeValue = new ChartPoint(startEvent.getTimestamp().getValue(), latency);
			Pair<Integer,ChartPoint> numberValue = eventCounter_.updateStandardCounter(latency);
			
			InterfaceMediator.getInstance().addPointToViews( timeValue, numberValue );
		}
	}
	
	public void handleCompleted() {
		if (isCancelled_)
			return;
		
		EventMatcher.getInstance().clearStack();
		InterfaceMediator.getInstance().pushPointsToViews();
		InterfaceMediator.getInstance().redrawViews();
		
		Analyser.getInstance().changeState( new EmptyState() );
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser.states;

import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.event.LttngEvent;


/**
 * Empty state, for demonstration only.
 * 
 * @author Philippe Sawicki
 */
public class EmptyState extends AnalyserState {

	/**
	 * Constructor.
	 */
	public EmptyState() {
		super("Empty state");
	}

	@Override
	public void process() {
		if (Config.PRINT_EMPTY_STATE_STATUS) 
			System.out.println("  EmptyState.process()");
		
		// Nothing to do here...
	}

	@Override
	public void handleData(LttngEvent event) {
		
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser.states;

import org.eclipse.linuxtools.lttng.analysis.Config;
import org.eclipse.linuxtools.lttng.analysis.InterfaceMediator;
import org.eclipse.linuxtools.lttng.analysis.analyser.Analyser;
import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
import org.eclipse.linuxtools.lttng.analysis.facade.TraceFacade;
import org.eclipse.linuxtools.lttng.event.LttngEvent;
import org.eclipse.linuxtools.lttng.ui.views.latency.LatencyView;
import org.eclipse.linuxtools.tmf.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.experiment.TmfExperiment;

/**
 * State used to find out the min an max values for the view's horizontal axis.
 * 
 * @author Philippe Sawicki
 */
public class MinMaxLatencyState extends AnalyserState {
	
	/**
	 * Min latency time.
	 */
	private long latencyMin_;
	/**
	 * Max latency time.
	 */
	private long latencyMax_;
	
	/**
	 * Min trace time.
	 */
	private long timeMin_;
	/**
	 * Max trace time.
	 */
	private long timeMax_;
	

	/**
	 * Constructor.
	 */
	public MinMaxLatencyState() {
		super("Min max latency state");
		
		// Initialise min and max latency times with some values
		latencyMin_ = Long.MAX_VALUE;
		latencyMax_ = Long.MIN_VALUE;
		
		// Initialise min and max trace times with some values
		timeMin_ = Long.MAX_VALUE;
		timeMax_ = Long.MIN_VALUE;
	}

	public void process() {
		if (Config.PRINT_TIMERANGE_STATE_STATUS)
			System.out.println("  MinMaxLatencyState()");

		TmfExperiment<LttngEvent> experiment = LatencyView.getExperiment();
		
		TmfTimeRange timeRange = LatencyView.getTimeRange();
		
		TraceFacade.getInstance().getAllEvents(experiment, timeRange, this);
	}

	@Override
	public void handleData(LttngEvent event) {
		if (isCancelled_)
			return;
		
		LttngEvent startEvent = EventMatcher.getInstance().process(event);
		
		if (startEvent != null) {
			long latency = event.getTimestamp().getValue() - startEvent.getTimestamp().getValue();
			
			latencyMax_ = Math.max(latencyMax_, latency);
			latencyMin_ = Math.min(latencyMin_, latency);
		}
		
		
		timeMin_ = Math.min(timeMin_, event.getTimestamp().getValue());
		timeMax_ = Math.max(timeMax_, event.getTimestamp().getValue());
	}
	
	public void handleCompleted() {
		if (isCancelled_)
			return;
		
		EventMatcher.getInstance().clearStack();
		
		InterfaceMediator.getInstance().pushHorizontalAxisForGraph(timeMin_, timeMax_);
		InterfaceMediator.getInstance().pushVerticalAxisForGraph(latencyMin_, latencyMax_);
		InterfaceMediator.getInstance().pushHorizontalAxisForHistogram(latencyMin_, latencyMax_);
		
		Analyser.getInstance().changeState( new CounterState(latencyMin_, latencyMax_) );
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Ali Jawar - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser.utilities;

import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;


/**
 * This class generates dynamically the standard latencies and updates the 
 * event count for each bin/bucket.
 * 
 * Standards latencies values are generated dynamically and depend to three 
 * variables: minLatency, maxLatency, nbBar.
 * 
 * <ul>
 * <li><em>minLatency</em> is the smallest latency value</li>
 * <li><em>maxLatency</em> is the biggest latency value</li>
 * <li><em>nbBar</em> is the number of divisions along the axis of latencies</li>
 * </ul>
 * 
 * Algorithm complexity: O(1)... actually O(<em>nbBar</em>) but <em>nbBar</em> 
 * is limited to a constant.
 * 
 * @author Ali Jawhar
 * @author Philippe Sawicki
 */
public class EventCountPerLatency {
	
	/**
	 * Standard latencies values.
	 */
	private double[] standardLatencies_;
	
	/**
	 * One counter for each standard latency.
	 */
	private int[] standardCounter_;
	
	/**
	 * Distance between each latency.
	 */
	private double delta_;
	
	/**
	 * Minimum latency.
	 */
	private long minLatency_;
	
	
	/**
	 * Constructor.
	 */
	public EventCountPerLatency() {
		
	}
	
	/**
	 * Method to generate the standard latencies table.
	 * 
	 * @param minLatency Latency min.
	 * @param maxLatency Latency max.
	 * @param nbBars Number of bars in the histogram graph.
	 */
	public void generateStandardLatencies(long minLatency, long maxLatency, int nbBars) {
		delta_ = (double)(maxLatency-minLatency) / nbBars;
		minLatency_ = minLatency;
		
		// Initialisation of standard counter table
		standardCounter_ = new int[nbBars+1]; // one counter for each standard latency
		for (int i = 0; i < standardCounter_.length; i++) { // initiate counters values
			standardCounter_[i] = 0;
		}
		
		// Create standard latencies table
		standardLatencies_ = new double[nbBars+1];
		
		for (int i = 0 ; i < standardLatencies_.length; i++) {
			standardLatencies_[i] = minLatency + (i * delta_);
		}
	}
	
	/**
	 * Updates the standard latencies counter.
	 * @param latency The latency to add to the counter.
	 * @return The new updates values (index of standard latency ; new counter value).
	 */
	public Pair<Integer,ChartPoint> updateStandardCounter(long latency) {
		int index = 0;
		index = (int)((latency - minLatency_) / delta_);
		standardCounter_[index]++;
		ChartPoint point = new ChartPoint((long)standardLatencies_[index], standardCounter_[index]);
		return new Pair<Integer,ChartPoint>(index, point);
	}

	/**
	 * Prints the standard latencies table.
	 */
	public void printStandardLatencies() {
		System.out.print("The standard latencies table is: ");
		
		for (int i = 0; i < standardLatencies_.length; i++) {
			System.out.print(standardLatencies_[i] + " ");
		}
		System.out.println();
	}
	
	/**
	 * Prints the event count per standard latency.
	 */
	public void printEventCountPerStandardLatency() {
		System.out.println("here is the Event count per standard latency: "); 
		
		for (int j = 0; j < standardLatencies_.length; j++) {			
			System.out.println("latency = " + standardLatencies_[j] + "  EventCount = " + standardCounter_[j]);	
		}
	}

	/**
	 * Returns the standard latencies table.
	 * @return The standard latencies table.
	 */
	public double[] getStandardLatencies() {
		return standardLatencies_;
	}

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.analyser.utilities;


/**
 * Pair utility class, encapsulates a pair of objects.
 * 
 * @author Philippe Sawicki
 *
 * @param <A> The type of the first object.
 * @param <B> The type of the second object.
 */
public class Pair<A,B> {
	
	/**
	 * A reference to the first object.
	 */
	protected A first_;
	/**
	 * A reference to the second object.
	 */
	protected B second_;
	
	
	/**
	 * Constructor.
	 * @param first The pair's first object.
	 * @param second The pair's second object.
	 */
	public Pair(A first, B second) {
		first_  = first;
		second_ = second;
	}
	
	/**
	 * Constructor.
	 */
	public Pair() {
		this(null, null);
	}
	
	/**
	 * Pair hash code.
	 */
	public int hashCode() {
		int hashFirst = first_ != null ? first_.hashCode() : 0;
		int hashSecond = second_ != null ? second_.hashCode() : 0;
		
		return (hashFirst + hashSecond) * hashSecond + hashFirst;
	}
	
	/**
	 * Object comparison.
	 */
	@SuppressWarnings("unchecked")
	public boolean equals(Object other) {
		if (other instanceof Pair) {
			Pair<A,B> otherPair = (Pair<A,B>) other;
			return (
				( first_ == otherPair.first_ ||
					( first_ != null && otherPair.first_ != null &&
					  first_.equals(otherPair.first_))) &&
				( second_ == otherPair.second_ ||
					( second_ != null && otherPair.second_ != null &&
					  second_.equals(otherPair.second_)))
			);
		}
		return false;
	}
	
	/**
	 * Object to string.
	 */
	public String toString() {
		return "(" + first_ + ", " + second_ + ")";
	}
	
	/**
	 * Returns a reference to the pair's first object.
	 * @return A reference to the pair's first object.
	 */
	public A getFirst() {
		return first_;
	}
	
	/**
	 * Sets the pair's first object.
	 * @param first The pair's first object.
	 */
	public void setFirst(A first) {
		first_ = first;
	}
	
	/**
	 * Returns a reference to the pair's second object.
	 * @return A reference to the pair's second object.
	 */
	public B getSecond() {
		return second_;
	}
	
	/**
	 * Sets the pair's second object.
	 * @param second The pair's second object.
	 */
	public void setSecond(B second) {
		second_ = second;
	}
}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.facade;

import org.eclipse.linuxtools.lttng.event.LttngEvent;

/**
 * Data handler interface.
 *
 * Classes who want to register to the TraceFacade to receive data must implement
 * this class's interface.
 *
 * @author Philippe Sawicki
 */
public abstract class DataHandler {

    /**
     * Handles the data received from TraceFacade.
     */
    public abstract void handleData(LttngEvent event);
    
    /**
     * Handles transaction completion.
     */
    public void handleCompleted() { }
    
    /**
     * Handles transaction success.
     */
    public void handleSuccess() { }
    
    /**
     * Handles transaction failure.
     */
    public void handleFailure() { }
    
    /**
     * Handles transaction cancellation.
     */
    public void handleCancel() { }

}




/*******************************************************************************
 * Copyright (c) 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
 *******************************************************************************/
package org.eclipse.linuxtools.lttng.analysis.facade;

import org.eclipse.linuxtools.lttng.event.LttngEvent;
import org.eclipse.linuxtools.tmf.event.TmfEvent;
import org.eclipse.linuxtools.tmf.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
import org.eclipse.linuxtools.tmf.experiment.TmfExperiment;
import org.eclipse.linuxtools.tmf.request.TmfEventRequest;


/**
 * Facade for obtaining traced events through TMF given their type and/or timerange.
 *
 * @author Philippe Sawicki
 */
public class TraceFacade {

    /**
     * TraceFacade instance (Singleton pattern).
     */
    private static TraceFacade instance_ = null;
    
    /**
     * Private constructor to defeat instantiation (Singleton pattern).
     */
    private TraceFacade() { }

    /**
     * Returns an instance of the TraceFacade (Singleton pattern).
     *
     * @return An instance of the TraceFacade (Singleton pattern).
     */
    public static TraceFacade getInstance() {
        if (instance_ == null)
            instance_ = new TraceFacade();
        return instance_;
    }
    
    /**
     * Returns all the trace events between the given time range.
     * @param experiment The current experiment.
     * @param timeRange The considered time range.
     * @param handler The object that will receive the trace events.
     */
    public void getAllEvents(TmfExperiment<LttngEvent> experiment, TmfTimeRange timeRange, DataHandler handler) {
    	UnfilteredRequest request = new UnfilteredRequest(LttngEvent.class, timeRange, handler);
    	experiment.sendRequest(request);
    }
    
    
    
    /**
     * TmfEventRequest extension to forward data handling to a designated object, unfiltered by type(s).
     * 
     * @author Philippe Sawicki
     */
    private class UnfilteredRequest extends TmfEventRequest<LttngEvent> {
    	
    	/**
    	 * Data handler.
    	 */
    	private DataHandler handler_ = null;
    	
    	/**
    	 * Start of considered time range.
    	 */
    	private TmfTimestamp startTime_ = null;
    	/**
    	 * End of considered time range.
    	 */
    	private TmfTimestamp endTime_   = null;
    	

    	@SuppressWarnings("unchecked")
		public UnfilteredRequest(Class<? extends TmfEvent> dataType, TmfTimeRange timeRange, DataHandler handler, int nbRequested) {
            super((Class<LttngEvent>)dataType, timeRange, nbRequested, 1);
            handler_ = handler;
            
            startTime_ = timeRange.getStartTime();
            endTime_   = timeRange.getEndTime();
        }
    	
    	@SuppressWarnings("unchecked")
		public UnfilteredRequest(Class<? extends TmfEvent> dataType, TmfTimeRange timeRange, DataHandler handler) {
            super((Class<LttngEvent>)dataType, timeRange, Integer.MAX_VALUE, 1);
            handler_ = handler;
            
            startTime_ = timeRange.getStartTime();
            endTime_   = timeRange.getEndTime();
        }

		public void handleData(LttngEvent event) {
			if ( event != null 
					&& event.getTimestamp().getValue() >= startTime_.getValue() 
					&& event.getTimestamp().getValue() <= endTime_.getValue() ) {
		        handler_.handleData(event);
			}
	    }
		
		/**
		 * Forward completion notification to the handler.
		 */
		public void handleCompleted() {
			handler_.handleCompleted();
		}
		
		/**
		 * Forward success notification to the handler.
		 */
		public void handleSuccess() {
			handler_.handleSuccess();
		}
		
		/**
		 * Forward failure notification to the handler.
		 */
		public void handleFailure() {
	    	handler_.handleFailure();
	    }
		
		/**
		 * Forward cancellation notification to the handler.
		 */
		public void handleCancel() {
			handler_.handleCancel();
		}
    }

}

Lines 90-95 Link Here

(-)plugin.xml (+9 lines)
90	name="%histogram.view.name"	90	name="%histogram.view.name"
91	restorable="true">	91	restorable="true">
92	</view>	92	</view>
		93	<view
		94	allowMultiple="false"
		95	category="org.eclipse.linuxtools.lttng.ui.views.category"
		96	class="org.eclipse.linuxtools.lttng.ui.views.latency.LatencyView"
		97	icon="icons/graph.gif"
		98	id="org.eclipse.linuxtools.lttng.ui.views.latency"
		99	name="%latency.view.name"
		100	restorable="true">
		101	</view>
93	</extension>	102	</extension>
94	<extension	103	<extension
95	point="org.eclipse.ui.newWizards">	104	point="org.eclipse.ui.newWizards">

Lines 14-19 Link Here

(-)plugin.properties (+1 lines)
14	resources.view.name = Resources	14	resources.view.name = Resources
15	statistics.view.name = Statistics	15	statistics.view.name = Statistics
16	histogram.view.name = Histogram	16	histogram.view.name = Histogram
		17	latency.view.name = Latency View
17		18
18	wizard.category.name = LTTng	19	wizard.category.name = LTTng
19	project.new.wizard.name = LTTng Project	20	project.new.wizard.name = LTTng Project

Lines 3-8 Link Here

(-)src/org/eclipse/linuxtools/lttng/AllLTTngTests.java (+3 lines)
3	import junit.framework.Test;	3	import junit.framework.Test;
4	import junit.framework.TestSuite;	4	import junit.framework.TestSuite;
5		5
		6	import org.eclipse.linuxtools.lttng.analysis.analyser.test.AnalysisTests;
6	import org.eclipse.linuxtools.lttng.control.LTTngSyntheticEventProviderTest;	7	import org.eclipse.linuxtools.lttng.control.LTTngSyntheticEventProviderTest;
7	import org.eclipse.linuxtools.lttng.model.LTTngTreeNodeTest;	8	import org.eclipse.linuxtools.lttng.model.LTTngTreeNodeTest;
8	import org.eclipse.linuxtools.lttng.state.resource.LTTngStateResourceTest;	9	import org.eclipse.linuxtools.lttng.state.resource.LTTngStateResourceTest;
Lines 45-50 Link Here
45	suite.addTestSuite(LTTngTreeNodeTest.class);	46	suite.addTestSuite(LTTngTreeNodeTest.class);
46	// suite.addTestSuite(StateExperimentManagerTextTest.class);	47	// suite.addTestSuite(StateExperimentManagerTextTest.class);
47	suite.addTestSuite(LTTngStateResourceTest.class);	48	suite.addTestSuite(LTTngStateResourceTest.class);
		49
		50	suite.addTestSuite(AnalysisTests.class);
48		51
49	//$JUnit-END$	52	//$JUnit-END$
50	return suite;	53	return suite;




package org.eclipse.linuxtools.lttng.analysis.analyser.test;


import junit.framework.TestCase;
import org.junit.After;
import org.junit.Before;

import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.StackWrapper;
import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.EventCountPerLatency;
import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.Pair;
import org.eclipse.linuxtools.lttng.event.LttngEvent;
import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;


/**
 * Define the class test
 * this class initialize the variables test in the setup() method, free all variables of data in tesrDown(), and 
 * define the preparation of each test, define also the case test, 
 * and finally execute all test cases in testGlobalAnalyser() method.
 * 
 * @author Abdelhaq Saoudi
 */

public class AnalysisTests extends TestCase{
	
		/**
		 * Variables for test
		 */
	
		private LttngEvent eventAsked_1= null;
		private LttngEvent eventAsked_2= null;
		private LttngEvent newEvent = null;
		private LttngEvent newEvent1 = null;
		private static int matched = 0;
		private static int processed = 0;
		
		private String key_1 = null;
		private String key_2 = null;
		private String type1 = null;
		private String type2 = null;
		private StackWrapper stw = null;
		
		private EventCountPerLatency ecpl= null;
		private  long minLatency =  10;
		private  long maxLatency =  30;
		private int nbBar = 10;
		private Pair<Integer,ChartPoint> pair;
		private Pair<String,String> eventType;
	
	    /**
	     * Constructor of the class test
	     */
	    
		public AnalysisTests(final String name){
			super(name);
			
			/**
			 * search all event and registration in the vector traceEvents
			 */
			RequestsEvents.getInstance().findEvents();
		}
		
		/**
		 * preparation for test of Event data received
		 */
		public void preparationtoTestDataEvent(){
			eventAsked_1 = RequestsEvents.traceEvents.elementAt(0);
			eventAsked_2 = RequestsEvents.traceEvents.elementAt(1);
		}	
		
	    /**
	     *  preparation for test of EventMatcher class
	     */
		public void preparationtoTestProcess(){
			//eventAsked_1 = RequestsEvents.traceEvents.elementAt(0);
			//eventAsked_2 = RequestsEvents.traceEvents.elementAt(1);
			newEvent = EventMatcher.getInstance().process(eventAsked_1);
			newEvent1 = EventMatcher.getInstance().process(eventAsked_2);
			processed = EventMatcher.getInstance().getNBProcessedEvents();
			matched = EventMatcher.getInstance().getNBMatchedEvents();
		}
		
		/**
	     *  preparation to test of clearStack method in EventMatcher class.
	     */
		public void preparationtoTestClearStack(){
			EventMatcher.getInstance().clearStack();	
		}
		
	     /**
	     *  preparation for test of stackWrraper class
	     */
		public void preparationtoTestStack(){
			//eventAsked_1 = RequestsEvents.traceEvents.elementAt(0);
			//eventAsked_2 = RequestsEvents.traceEvents.elementAt(1);
			key_1 = 	eventAsked_1.getMarkerName();
			key_2 = 	eventAsked_2.getMarkerName();
			stw = new StackWrapper();
			int size = RequestsEvents.traceEvents.size();
			
			// for all requests event, we put it in the stack.
		    for(int i = 0 ; i < size -1; i++)
		    	 stw.put(RequestsEvents.traceEvents.elementAt(i));
		}
		
	     /**
	     *  preparation for test of EventCountPerLatency class
	     */
		public void preparationtoTestEventCountPerLatency(){
		    ecpl = new EventCountPerLatency();
		    ecpl.generateStandardLatencies(minLatency, maxLatency, nbBar);
		    pair = ecpl.updateStandardCounter(18);
		}   
		
	    /**
	     *  preparation for test of Pair class
	     */
		public void preparationtoTestPairClass(){
			eventType = new Pair<String, String>(eventAsked_1.getMarkerName(), eventAsked_2.getMarkerName());
			type1 = 	eventAsked_1.getMarkerName();
			type2 = 	eventAsked_2.getMarkerName();
		}   
		/**
		 * this method let us to initializes the variables.  
		 * */
		@Before
		public void setUp() throws Exception {
			super.setUp();
			preparationtoTestDataEvent(); 
			preparationtoTestProcess();
			preparationtoTestStack();
			preparationtoTestEventCountPerLatency();
			preparationtoTestPairClass();
		}
	   
		/**
		 * this method let us to free the variables.  
		 * */
		@After
		public void tearDown() throws Exception {
			super.setUp();
			eventAsked_1 = null; 
			eventAsked_2 = null;
			newEvent = null;
			newEvent1= null;
			stw = null;
			ecpl = null;
			pair = null;
			eventType = null;
		}
		
		/**
		 * test the data of event
		 */	
		public void EventDataTestT0() {
		     System.out.println("test T0 of good data event"); 
		     //System.out.println("ev 1 : " +  eventAsked_1);
		     //System.out.println("ev 2 : " + eventAsked_2);
		     assertEquals(0|1, eventAsked_1.getCpuId());
		     assertEquals(0|1, eventAsked_2.getCpuId());
			 assertNotSame(eventAsked_1.getTimestamp().getValue(), eventAsked_2.getTimestamp().getValue());
			 assertNotSame(eventAsked_1.getContent(), eventAsked_2.getContent());
			 assertNotSame(eventAsked_1.getMarkerName(), eventAsked_2.getMarkerName());
			 assertNotSame(eventAsked_1, eventAsked_2);
		}		
	
		
		public void EventDataTestT1() {
		     System.out.println("test T1 of errone data event");
		     assertNotSame("not exist marker",eventAsked_1.getMarkerName());
		     assertNotSame("not exist marker",eventAsked_2.getMarkerName());
		     assertNotSame(1345679853422L ,eventAsked_1.getTimestamp().getValue());
		     assertNotSame(1345679853422L ,eventAsked_2.getTimestamp().getValue());
		}	
		
		/**
		 * test process() method of EventMacher class 
		 */
		
		public void EventMatcherProcessTestT10() {
		     System.out.println("test T10 of good process method");
		     assertEquals(2,processed);
			 assertNotNull(matched);	
			
		}		
		public void EventMatcherProcessTestT11() {
			System.out.println("test T11 of errone process method");
			assertNotSame(3,processed);
			assertNotSame(3,matched);
		}		
		
			
		public void EventMatcherClearStackTestT101() {
		     System.out.println("test T101 of good clear Stack methode");
		     preparationtoTestClearStack();
		     assertSame(0,EventMatcher.getInstance().getNBProcessedEvents());
		     assertSame(0,EventMatcher.getInstance().getNBMatchedEvents());
		}	
		 
		
		/**
		 * test the key of event in the stack WRraper. 
		 */
		public void StackTestT13() {
		    System.out.println("test T13 of errone content stack");
		    assertTrue(stw.containsKey(key_2));
		    stw.removeEvent(key_2, eventAsked_2);
		    assertFalse(stw.containsKey(key_2));   
		}
		
		
		/**
		 * test of EventCounterPerLatency. 
		 */
		
		public void GetStandardLatencyTestT14() {
		    System.out.println("test T14 of good event counter");
		    for(int i = 0; i < ecpl.getStandardLatencies().length; i++)
		    	System.out.println(ecpl.getStandardLatencies()[i]);
		    //System.out.println(pair.getFirst());
		    assertSame(4, pair.getFirst());
		    assertEquals(nbBar + 1, ecpl.getStandardLatencies().length);
		    
		}
		
		public void GetStandardLatencyTestT15() {
		    System.out.println("test T15 of errone event counter");
		    assertNotSame(0&1&2&3&5&6&7&8&9&10, pair.getFirst());
		    assertNotSame(20, ecpl.getStandardLatencies().length);
		    
		}
		
		
		/**
		 * test of Pair Class. 
		 */
		public void PairTestT16() {
		    System.out.println(" test T16 for good job of Pair");
		    assertEquals(type1, eventType.getFirst());
		    assertEquals(type2, eventType.getSecond());
		    assertNotSame(eventType.getFirst(), eventType.getSecond());
		    assertNotNull(eventType.hashCode());
		    assertFalse(eventType.equals(pair));
		    assertTrue(eventType.equals(eventType)); 
		}
		
		
		public void PairTestT17() {
		    System.out.println("test T17 for errone job of Pair ");
		    assertNotSame(type1, eventType.getSecond());
		    assertNotSame(type2, eventType.getFirst());
		    assertNotSame("event", eventType.getFirst());
		    assertNotSame("something", eventType.getSecond());
		    assertNotSame(0,eventType.hashCode());
		    assertNotSame("OBJECT",eventType.equals(pair)); 
		}
		
		/**
		 * this method execute all test cases,
		 * 
		 * because, if we start the test individual and number of test upper than one, 
		 * we have the error message in the console " ** (process: number): DEBUG (recursed) "
		 * 
		 */
		public void testGlobalAnalyser(){
			EventDataTestT0();
			EventDataTestT1();
			EventMatcherProcessTestT10();
			EventMatcherProcessTestT11();
			EventMatcherClearStackTestT101();
			StackTestT13();
			GetStandardLatencyTestT14();
			GetStandardLatencyTestT15();
			PairTestT16();
			PairTestT17();
		}
}







package org.eclipse.linuxtools.lttng.analysis.analyser.test;

import java.util.Vector;

import org.eclipse.linuxtools.lttng.analysis.facade.DataHandler;
import org.eclipse.linuxtools.lttng.analysis.facade.TraceFacade;
import org.eclipse.linuxtools.lttng.event.LttngEvent;
import org.eclipse.linuxtools.lttng.trace.LTTngTrace;
import org.eclipse.linuxtools.tmf.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.experiment.TmfExperiment;
import org.eclipse.linuxtools.tmf.trace.ITmfTrace;


/**
 * this class find all event from TMF by Trace Facade, 
 * and register it in the static Vector traceEvents.
 * 
 * @author Abdelhaq Saoudi
 */

public  class RequestsEvents extends DataHandler {
	
	   /**
	    *  (class implemented as Singleton).
	    */
	
	   private static RequestsEvents instance_ = null;
	    
	    
	    private RequestsEvents() { }
 
	    public static RequestsEvents getInstance() {
	        if (instance_ == null)
	            instance_ = new RequestsEvents();
	        return instance_;
	    }

		
		private final String TRACE_PATH = "/home/l3819/Bureau/traces/trace_0";
		
		public static Vector<LttngEvent> traceEvents = new Vector<LttngEvent>();
		
		private TmfExperiment<LttngEvent> experiment = null;
		
		private TmfTimeRange timeRange = null;
		
		/**
		 * this method findEvent() retrieves all event fromTMF by traceFacade, the received event pass in the handler "this"
		 */
		public void findEvents(){
			
			try {
				ITmfTrace[] traces = new ITmfTrace[1];
				traces[0] = new LTTngTrace(TRACE_PATH);
				
				// Create our new experiment
				experiment = new TmfExperiment<LttngEvent>(LttngEvent.class, "firstExperiment", traces);
				//long x=experiment.getStartTime().getValue();
				//long y=experiment.getEndTime().getValue();
				//System.out.println("valeur de x: "+  x +" y: "+ y +"y-x :"+ (y-x));
				timeRange = experiment.getTimeRange();
				TraceFacade.getInstance().getAllEvents(experiment, timeRange, this);
			}
			
			catch (NullPointerException e) {
			}
			catch (Exception e) {
			    e.printStackTrace();
			 }
			
		}  
	
		/**
		 * this handler register the event in the vector.
		 */
		public void handleData(LttngEvent event) {
			//System.out.println("start handler");
			traceEvents.add(event.clone());
		}
		
		/**
		 * Forward completion notification to the handler.
		 */
		public void handleCompleted() {
			
		}
			
	
}

	


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(-).classpath (+1 lines)
3	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>	3	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
4	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>	4	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
5	<classpathentry kind="src" path="src"/>	5	<classpathentry kind="src" path="src"/>
		6	<classpathentry combineaccessrules="false" kind="src" path="/org.eclipse.linuxtools.lttng.ui"/>
6	<classpathentry kind="output" path="bin"/>	7	<classpathentry kind="output" path="bin"/>
7	</classpath>	8	</classpath>

Return to bug 331467

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(-)src/org/eclipse/linuxtools/lttng/ui/views/latency/AbstractView.java (+313 lines)
		1	/*******************************************************************************
		2	* Copyright (c) 2010 Ericsson
		3	*
		4	* All rights reserved. This program and the accompanying materials are
		5	* made available under the terms of the Eclipse Public License v1.0 which
		6	* accompanies this distribution, and is available at
		7	* http://www.eclipse.org/legal/epl-v10.html
		8	*
		9	* Contributors:
		10	* Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
		11	*******************************************************************************/
		12	package org.eclipse.linuxtools.lttng.ui.views.latency;
		13
		14	import org.eclipse.linuxtools.lttng.ui.views.latency.handlers.ViewHandler;
		15	import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.AbstractMouseListener;
		16	import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.AbstractPaintListener;
		17	import org.eclipse.linuxtools.lttng.ui.views.latency.listeners.ZoomListener;
		18	import org.eclipse.swt.SWT;
		19	import org.eclipse.swt.SWTException;
		20	import org.eclipse.swt.widgets.Canvas;
		21	import org.eclipse.swt.widgets.Composite;
		22	import org.eclipse.swt.widgets.Display;
		23
		24
		25	/**
		26	* Abstract view.
		27	*
		28	* @author Philippe Sawicki
		29	*/
		30	public abstract class AbstractView extends Canvas {
		31
		32	/**
		33	* Parent composite node.
		34	*/
		35	protected Composite parent_;
		36
		37	/**
		38	* View handler (retrieves the information).
		39	*/
		40	protected ViewHandler viewHandler_ = null;
		41
		42	/**
		43	* Horizontal axis min value.
		44	*/
		45	protected long xMin_;
		46	/**
		47	* Horizontal axis max value.
		48	*/
		49	protected long xMax_;
		50	/**
		51	* Vertical axis min value.
		52	*/
		53	protected long yMin_;
		54	/**
		55	* Vertical axis max value.
		56	*/
		57	protected long yMax_;
		58
		59	/**
		60	* Paint listener.
		61	*/
		62	protected AbstractPaintListener paintListener_;
		63
		64	/**
65	* Zoom listener, to zoom in and out of a graph using the scroll wheel.
66	*/
67	protected ZoomListener zoomListener_;
68
69	/**
70	* Tooltip listener.
71	*/
72	protected AbstractMouseListener mouseListener_;
73
74
75	/**
76	* Constructor.
77	* @param parent The parent composite node.
78	* @param style The SWT style to use to render the view.
79	*/
80	public AbstractView(Composite parent, int style) {
81	super(parent, style);
82
83	parent_ = parent;
84	}
85
86	/**
87	* Sets the min value of the horizontal axis.
88	* @param xMin The min value of the horizontal axis.
89	*/
90	public void setXMin(long xMin) {
91	xMin_ = xMin;
92	}
93
94	/**
95	* Returns the min value of the horizontal axis.
96	* @return The min value of the horizontal axis.
97	*/
98	public long getXMin() {
99	return xMin_;
100	}
101
102	/**
103	* Sets the max value of the horizontal axis.
104	* @param xMax The max value of the horizontal axis.
105	*/
106	public void setXMax(long xMax) {
107	xMax_ = xMax;
108	}
109
110	/**
111	* Returns the max value of the horizontal axis.
112	* @return The max value of the horizontal axis.
113	*/
114	public long getXMax() {
115	return xMax_;
116	}
117
118	/**
119	* Sets the min value of the vertical axis.
120	* @param yMin The min value of the vertical axis.
121	*/
122	public void setYMin(long yMin) {
123	yMin_ = yMin;
124	}
125	/**
126	* Returns the min value of the vertical axis.
127	* @return The min value of the vertical axis.
128	*/
129	public long getYMin() {
130	return yMin_;
131	}
132
133	/**
134	* Sets the max value of the vertical axis.
135	* @param yMax The max value of the vertical axis.
136	*/
137	public void setYMax(long yMax) {
138	yMax_ = yMax;
139	}
140	/**
141	* Returns the max value of the vertical axis.
142	* @return The max value of the vertical axis.
143	*/
144	public long getYMax() {
145	return yMax_;
146	}
147
148	/**
149	* Adds a point to the view.
150	* @param point The point to add to the view.
151	*/
152	public abstract void addPoint(int point);
153
154	/**
155	* Adds a buffer of points to the view.
156	* @param points The buffer of points to add to the view.
157	* @param nbPoints The number of points in the buffer.
158	*/
159	public abstract void addPoints(ChartPoint[] points, int nbPoints);
160
161	/**
162	* Clears the view.
163	*/
164	public abstract void clear();
165
166	/**
167	* Clears the background of the view but keeps min and max values.
168	*/
169	public abstract void clearBackground();
170
171	/**
172	* Clears the points buffer, if any exists.
173	*/
174	public void clearPoints() {
175	paintListener_.clearPoints();
176	}
177
178	/**
179	* Sets the view handler.
180	* @param viewHandler The view handler.
181	*/
182	public void setViewHandler(ViewHandler viewHandler) {
183	viewHandler_ = viewHandler;
184	}
185
186	/**
187	* Draw horizontal label each "nbTicks" ticks.
188	* @param nbTicks The draw interval.
189	*/
190	public void drawLabelEachNTicks(int nbTicks) {
191	paintListener_.drawLabelEachNTicks(nbTicks);
192	}
193
194	/**
195	* Sets the title of the graph.
196	* @param graphTitle The title of the graph.
197	*/
198	public void setGraphTitle(String graphTitle) {
199	paintListener_.setGraphTitle(graphTitle);
200	}
201
202	/**
203	* Sets the horizontal axis label.
204	* @param xLabel The horizontal axis label.
205	* @param offset The horizontal axis draw offset (in pixels).
206	*/
207	public void setXAxisLabel(String xLabel, int offset) {
208	paintListener_.setXAxisLabel(xLabel, offset);
209	}
210
211	/**
212	* Sets the vertical axis label.
213	* @param yLabel The vertical axis label.
214	*/
215	public void setYAxisLabel(String yLabel) {
216	paintListener_.setYAxisLabel(yLabel);
217	}
218
219	/**
220	* Asks for the view to be redrawn, synchronously or asynchronously.
221	* @param asyncRedraw If "true", the view will be redrawn asynchronously, otherwise it will be
222	* redraw synchronously.
223	*/
224	public void askForRedraw(boolean asyncRedraw) {
225	if (asyncRedraw == true) {
226	Display.getDefault().asyncExec(new Runnable() {
227	public void run() {
228	try {
229	redraw();
230	} catch (SWTException e) {
231	// ...
232	}
233	}
234	});
235	} else {
236	Display.getDefault().syncExec(new Runnable() {
237	public void run() {
238	try {
239	redraw();
240	} catch (SWTException e) {
241	// ...
242	}
243	}
244	});
245	}
246	}
247
248	/**
249	* Asks for the view to be redrawn (asynchronously).
250	*/
251	public void askForRedraw() {
252	askForRedraw(true);
253	}
254
255	/**
256	* Returns the zoom factor for the canvas.
257	* @return The zoom factor for the canvas.
258	*/
259	public int getZoomFactor() {
260	if (zoomListener_ != null) {
261	return zoomListener_.getZoomFactor();
262	} else {
263	return 1;
264	}
265	}
266
267	/**
268	* Returns the zoom increment for the canvas.
269	* @return The zoom increment for the canvas.
270	*/
271	public int getZoomIncrement() {
272	if (zoomListener_ != null) {
273	return zoomListener_.getZoomIncrement();
274	} else {
275	return 1;
276	}
277	}
278
279	/**
280	* Redraws the title after a zoom to display the new zoom factor.
281	*/
282	public void redrawTitle() {
283	paintListener_.paintGraphTitle();
284	}
285
286	/**
287	* Removes the view's listeners before disposing of it.
288	*/
289	public void dispose() {
290	try {
291	if (paintListener_ != null) {
292	removePaintListener(paintListener_);
293	paintListener_ = null;
294	}
295	if (zoomListener_ != null) {
296	removeListener(SWT.MouseWheel, zoomListener_);
297	zoomListener_ = null;
298	}
299	if (mouseListener_ != null) {
300	removeListener(SWT.MouseMove, mouseListener_);
301	mouseListener_ = null;
302	}
303	} catch (SWTException e) {
304	// This exception will be thrown if the user closes the view
305	// while it is receiving data from the Analyser.
306
307	// ...
308	}
309
310	super.dispose();
311	}
312
313	}

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(-)src/org/eclipse/linuxtools/lttng/ui/views/latency/messages.properties (+44 lines)
	1	LatencyView.Action.IncreaseBarWidth.Tooltip=Increase histogram bar width
	2	LatencyView.Action.DecreaseBarWidth.Tooltip=Decrease histogram bar width
	3	LatencyView.Action.AddEvents.Tooltip=Add matching events
	4	LatencyView.Action.DeleteEvents.Tooltip=Deleted matching events
	5	LatencyView.Action.ListEvents.Tooltip=List matching events
	6	LatencyView.Dialogs.AddEvents.Title=Add event pairs
	7	LatencyView.Dialogs.AddEvents.Message=Select a pair of events to add it to the match list :
	8	LatencyView.Dialogs.AddEvents.Buttons.Add=Add
	9	LatencyView.Dialogs.AddEvents.Buttons.Close=Close
	10	LatencyView.Dialogs.AddEvents.Columns.Start=Start event types
	11	LatencyView.Dialogs.AddEvents.Columns.End=End event types
	12	LatencyView.Dialogs.AddEvents.Columns.List.Trigger=Trigger event type
	13	LatencyView.Dialogs.AddEvents.Columns.List.End=End event type
	14	LatencyView.Dialogs.AddEvents.Errors.NoSelection=You must select one item from both lists.
	15	LatencyView.Dialogs.AddEvents.Errors.StartNotSelected=You must select one item from the start event list.
	16	LatencyView.Dialogs.AddEvents.Errors.EndNotSelected=You must select one item from the end event list.
	17	LatencyView.Dialogs.AddEvents.Errors.SameSelected=The same event cannot be selected in both list at the same time.
	18	LatencyView.Dialogs.AddEvents.Errors.AlreadyMatched=The start and end events are already matched.
	19	LatencyView.Dialogs.AddEvents.Errors.StartAlreadyMatched=The start event is already matched.
	20	LatencyView.Dialogs.AddEvents.Errors.EndAlreadyMatched=The end event is already matched.
	21	LatencyView.Dialogs.AddEvents.Errors.StartAsEnd=The start event is already matched as an end event.
	22	LatencyView.Dialogs.AddEvents.Errors.EndAsStart=The end event is already matched as a start event.
	23	LatencyView.Dialogs.DeleteEvents.Title=Delete event pairs
	24	LatencyView.Dialogs.DeleteEvents.Message=Select a pair of matched events to remove it from the list :
	25	LatencyView.Dialogs.DeleteEvents.Buttons.Close=Close
	26	LatencyView.Dialogs.DeleteEvents.Buttons.Delete=Delete
	27	LatencyView.Dialogs.DeleteEvents.Confirm.Title=Confirm event deletion
	28	LatencyView.Dialogs.DeleteEvents.Confirm.Message=Are you sure you want to delete these event pairs?
	29	LatencyView.Dialogs.ListEvents.Title=Matched events list
	30	LatencyView.Dialogs.ListEvents.Message=List of matched events for latency computation :
	31	LatencyView.Dialogs.ListEvents.Buttons.Close=Close
	32	LatencyView.Dialogs.ListEvents.Buttons.Reset=Reset to default pairs
	33	LatencyView.Dialogs.ListEvents.Columns.Trigger=Trigger event type
	34	LatencyView.Dialogs.ListEvents.Columns.End=End event type
	35	LatencyView.Dialogs.ListEvents.Confirm.Title=Confirm pairs reset
	36	LatencyView.Dialogs.ListEvents.Confirm.Message=Are you sure you want to reset the event pairs to their default values?
	37	LatencyView.Graphs.Graph.Title=Latency VS Time
	38	LatencyView.Graphs.Graph.XAxisLabel=time (ns)
	39	LatencyView.Graphs.Graph.YAxisLabel=latency (ms)
	40	LatencyView.Graphs.Histogram.Title=Latency Distribution
	41	LatencyView.Graphs.Histogram.XAxisLabel=latency (ns)
	42	LatencyView.Graphs.Histogram.YAxisLabel=# events
	43	LatencyView.msgSlogan=Latency View
	44	LatencyView.tmf.UI=org.eclipse.linuxtools.lttng.ui

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(-)src/org/eclipse/linuxtools/lttng/analysis/Config.java (+94 lines)
		1	/*******************************************************************************
		2	* Copyright (c) 2010 Ericsson
		3	*
		4	* All rights reserved. This program and the accompanying materials are
		5	* made available under the terms of the Eclipse Public License v1.0 which
		6	* accompanies this distribution, and is available at
		7	* http://www.eclipse.org/legal/epl-v10.html
		8	*
		9	* Contributors:
		10	* Philippe Sawicki (INF4990.A2010@gmail.com) - Initial API and implementation
		11	*******************************************************************************/
		12	package org.eclipse.linuxtools.lttng.analysis;
		13
		14
		15	/**
		16	* Configuration class, holds some application constants.
		17	*
		18	* @author Philippe Sawicki
		19	*/
		20	public class Config {
		21
		22	/**
		23	* Private constructor to defeat instantiation.
		24	*/
		25	private Config() { }
		26
		27
		28	/**
		29	* Size of the point buffer holding point values before sending them to the view.
		30	*/
		31	public static final int POINT_BUFFER_SIZE = 5000;
		32
		33	/**
		34	* Histogram bar width.
		35	*/
		36	public static int HISTOGRAM_BAR_WIDTH = 5;
		37
		38	/**
		39	* Diameter of a point drawn on the chart (in pixels).
		40	*/
		41	public static final int GRAPH_POINT_DIAMETER = 1;
		42
		43	/**
		44	* Graph padding.
		45	*/
		46	public static final int GRAPH_PADDING = 10;
		47
		48	/**
		49	* Write computed data value to .csv files ?
		50	*/
		51	public static final boolean WRITE_COMPUTED_DATA_TO_FILE = false;
		52
		53	/**
		54	* Print all debug info to the console ?
		55	*/
		56	public static final boolean PRINT_ALL = false;
		57
		58	/**
		59	* Print state changes info to the console ?
		60	*/
		61	public static final boolean PRINT_STATE_CHANGES = (PRINT_ALL ? true : false);
		62	/**
		63	* Print state constructors info to the console ?
		64	*/
65	public static final boolean PRINT_STATE_CONSTRUCTOR = (PRINT_ALL ? true : false);
66
67	/**
68	* Print counter state info to the console ?
69	*/
70	public static final boolean PRINT_COUNTER_STATE_STATUS = (PRINT_ALL ? true : false);
71	/**
72	* Print empty state info to the console ?
73	*/
74	public static final boolean PRINT_EMPTY_STATE_STATUS = (PRINT_ALL ? true : false);
75	/**
76	* Print time range state info to the console ?
77	*/
78	public static final boolean PRINT_TIMERANGE_STATE_STATUS = (PRINT_ALL ? true : false);
79
80	/**
81	* Print graph view info to the console ?
82	*/
83	public static final boolean PRINT_GRAPH_VIEW_STATUS = (PRINT_ALL ? true : false);
84	/**
85	* Print histogram view info to the console ?
86	*/
87	public static final boolean PRINT_HISTO_VIEW_STATUS = (PRINT_ALL ? true : false);
88
89	/**
90	* Print added points info to the console ?
91	*/
92	public static final boolean PRINT_INTERFACE_POINT_ADD = (PRINT_ALL ? false : false);
93
94	}

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(-)src/org/eclipse/linuxtools/lttng/analysis/analyser/test/AnalysisTests.java (+281 lines)
		1	package org.eclipse.linuxtools.lttng.analysis.analyser.test;
		2
		3
		4	import junit.framework.TestCase;
		5	import org.junit.After;
		6	import org.junit.Before;
		7
		8	import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.EventMatcher;
		9	import org.eclipse.linuxtools.lttng.analysis.analyser.matcher.StackWrapper;
		10	import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.EventCountPerLatency;
		11	import org.eclipse.linuxtools.lttng.analysis.analyser.utilities.Pair;
		12	import org.eclipse.linuxtools.lttng.event.LttngEvent;
		13	import org.eclipse.linuxtools.lttng.ui.views.latency.ChartPoint;
		14
		15
		16	/**
		17	* Define the class test
		18	* this class initialize the variables test in the setup() method, free all variables of data in tesrDown(), and
		19	* define the preparation of each test, define also the case test,
		20	* and finally execute all test cases in testGlobalAnalyser() method.
		21	*
		22	* @author Abdelhaq Saoudi
		23	*/
		24
		25	public class AnalysisTests extends TestCase{
		26
		27	/**
		28	* Variables for test
		29	*/
		30
		31	private LttngEvent eventAsked_1= null;
		32	private LttngEvent eventAsked_2= null;
		33	private LttngEvent newEvent = null;
		34	private LttngEvent newEvent1 = null;
		35	private static int matched = 0;
		36	private static int processed = 0;
		37
		38	private String key_1 = null;
		39	private String key_2 = null;
		40	private String type1 = null;
		41	private String type2 = null;
		42	private StackWrapper stw = null;
		43
		44	private EventCountPerLatency ecpl= null;
		45	private long minLatency = 10;
		46	private long maxLatency = 30;
		47	private int nbBar = 10;
		48	private Pair<Integer,ChartPoint> pair;
		49	private Pair<String,String> eventType;
		50
		51	/**
		52	* Constructor of the class test
		53	*/
		54
		55	public AnalysisTests(final String name){
		56	super(name);
		57
		58	/**
		59	* search all event and registration in the vector traceEvents
		60	*/
		61	RequestsEvents.getInstance().findEvents();
		62	}
		63
		64	/**
65	* preparation for test of Event data received
66	*/
67	public void preparationtoTestDataEvent(){
68	eventAsked_1 = RequestsEvents.traceEvents.elementAt(0);
69	eventAsked_2 = RequestsEvents.traceEvents.elementAt(1);
70	}
71
72	/**
73	* preparation for test of EventMatcher class
74	*/
75	public void preparationtoTestProcess(){
76	//eventAsked_1 = RequestsEvents.traceEvents.elementAt(0);
77	//eventAsked_2 = RequestsEvents.traceEvents.elementAt(1);
78	newEvent = EventMatcher.getInstance().process(eventAsked_1);
79	newEvent1 = EventMatcher.getInstance().process(eventAsked_2);
80	processed = EventMatcher.getInstance().getNBProcessedEvents();
81	matched = EventMatcher.getInstance().getNBMatchedEvents();
82	}
83
84	/**
85	* preparation to test of clearStack method in EventMatcher class.
86	*/
87	public void preparationtoTestClearStack(){
88	EventMatcher.getInstance().clearStack();
89	}
90
91	/**
92	* preparation for test of stackWrraper class
93	*/
94	public void preparationtoTestStack(){
95	//eventAsked_1 = RequestsEvents.traceEvents.elementAt(0);
96	//eventAsked_2 = RequestsEvents.traceEvents.elementAt(1);
97	key_1 = eventAsked_1.getMarkerName();
98	key_2 = eventAsked_2.getMarkerName();
99	stw = new StackWrapper();
100	int size = RequestsEvents.traceEvents.size();
101
102	// for all requests event, we put it in the stack.
103	for(int i = 0 ; i < size -1; i++)
104	stw.put(RequestsEvents.traceEvents.elementAt(i));
105	}
106
107	/**
108	* preparation for test of EventCountPerLatency class
109	*/
110	public void preparationtoTestEventCountPerLatency(){
111	ecpl = new EventCountPerLatency();
112	ecpl.generateStandardLatencies(minLatency, maxLatency, nbBar);
113	pair = ecpl.updateStandardCounter(18);
114	}
115
116	/**
117	* preparation for test of Pair class
118	*/
119	public void preparationtoTestPairClass(){
120	eventType = new Pair<String, String>(eventAsked_1.getMarkerName(), eventAsked_2.getMarkerName());
121	type1 = eventAsked_1.getMarkerName();
122	type2 = eventAsked_2.getMarkerName();
123	}
124	/**
125	* this method let us to initializes the variables.
126	* */
127	@Before
128	public void setUp() throws Exception {
129	super.setUp();
130	preparationtoTestDataEvent();
131	preparationtoTestProcess();
132	preparationtoTestStack();
133	preparationtoTestEventCountPerLatency();
134	preparationtoTestPairClass();
135	}
136
137	/**
138	* this method let us to free the variables.
139	* */
140	@After
141	public void tearDown() throws Exception {
142	super.setUp();
143	eventAsked_1 = null;
144	eventAsked_2 = null;
145	newEvent = null;
146	newEvent1= null;
147	stw = null;
148	ecpl = null;
149	pair = null;
150	eventType = null;
151	}
152
153	/**
154	* test the data of event
155	*/
156	public void EventDataTestT0() {
157	System.out.println("test T0 of good data event");
158	//System.out.println("ev 1 : " + eventAsked_1);
159	//System.out.println("ev 2 : " + eventAsked_2);
160	assertEquals(0\|1, eventAsked_1.getCpuId());
161	assertEquals(0\|1, eventAsked_2.getCpuId());
162	assertNotSame(eventAsked_1.getTimestamp().getValue(), eventAsked_2.getTimestamp().getValue());
163	assertNotSame(eventAsked_1.getContent(), eventAsked_2.getContent());
164	assertNotSame(eventAsked_1.getMarkerName(), eventAsked_2.getMarkerName());
165	assertNotSame(eventAsked_1, eventAsked_2);
166	}
167
168
169	public void EventDataTestT1() {
170	System.out.println("test T1 of errone data event");
171	assertNotSame("not exist marker",eventAsked_1.getMarkerName());
172	assertNotSame("not exist marker",eventAsked_2.getMarkerName());
173	assertNotSame(1345679853422L ,eventAsked_1.getTimestamp().getValue());
174	assertNotSame(1345679853422L ,eventAsked_2.getTimestamp().getValue());
175	}
176
177	/**
178	* test process() method of EventMacher class
179	*/
180
181	public void EventMatcherProcessTestT10() {
182	System.out.println("test T10 of good process method");
183	assertEquals(2,processed);
184	assertNotNull(matched);
185
186	}
187	public void EventMatcherProcessTestT11() {
188	System.out.println("test T11 of errone process method");
189	assertNotSame(3,processed);
190	assertNotSame(3,matched);
191	}
192
193
194	public void EventMatcherClearStackTestT101() {
195	System.out.println("test T101 of good clear Stack methode");
196	preparationtoTestClearStack();
197	assertSame(0,EventMatcher.getInstance().getNBProcessedEvents());
198	assertSame(0,EventMatcher.getInstance().getNBMatchedEvents());
199	}
200
201
202	/**
203	* test the key of event in the stack WRraper.
204	*/
205	public void StackTestT13() {
206	System.out.println("test T13 of errone content stack");
207	assertTrue(stw.containsKey(key_2));
208	stw.removeEvent(key_2, eventAsked_2);
209	assertFalse(stw.containsKey(key_2));
210	}
211
212
213	/**
214	* test of EventCounterPerLatency.
215	*/
216
217	public void GetStandardLatencyTestT14() {
218	System.out.println("test T14 of good event counter");
219	for(int i = 0; i < ecpl.getStandardLatencies().length; i++)
220	System.out.println(ecpl.getStandardLatencies()[i]);
221	//System.out.println(pair.getFirst());
222	assertSame(4, pair.getFirst());
223	assertEquals(nbBar + 1, ecpl.getStandardLatencies().length);
224
225	}
226
227	public void GetStandardLatencyTestT15() {
228	System.out.println("test T15 of errone event counter");
229	assertNotSame(0&1&2&3&5&6&7&8&9&10, pair.getFirst());
230	assertNotSame(20, ecpl.getStandardLatencies().length);
231
232	}
233
234
235	/**
236	* test of Pair Class.
237	*/
238	public void PairTestT16() {
239	System.out.println(" test T16 for good job of Pair");
240	assertEquals(type1, eventType.getFirst());
241	assertEquals(type2, eventType.getSecond());
242	assertNotSame(eventType.getFirst(), eventType.getSecond());
243	assertNotNull(eventType.hashCode());
244	assertFalse(eventType.equals(pair));
245	assertTrue(eventType.equals(eventType));
246	}
247
248
249	public void PairTestT17() {
250	System.out.println("test T17 for errone job of Pair ");
251	assertNotSame(type1, eventType.getSecond());
252	assertNotSame(type2, eventType.getFirst());
253	assertNotSame("event", eventType.getFirst());
254	assertNotSame("something", eventType.getSecond());
255	assertNotSame(0,eventType.hashCode());
256	assertNotSame("OBJECT",eventType.equals(pair));
257	}
258
259	/**
260	* this method execute all test cases,
261	*
262	* because, if we start the test individual and number of test upper than one,
263	* we have the error message in the console " ** (process: number): DEBUG (recursed) "
264	*
265	*/
266	public void testGlobalAnalyser(){
267	EventDataTestT0();
268	EventDataTestT1();
269	EventMatcherProcessTestT10();
270	EventMatcherProcessTestT11();
271	EventMatcherClearStackTestT101();
272	StackTestT13();
273	GetStandardLatencyTestT14();
274	GetStandardLatencyTestT15();
275	PairTestT16();
276	PairTestT17();
277	}
278	}
279
280
281

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(-)src/org/eclipse/linuxtools/lttng/analysis/analyser/test/RequestsEvents.java (+92 lines)
		1	package org.eclipse.linuxtools.lttng.analysis.analyser.test;
		2
		3	import java.util.Vector;
		4
		5	import org.eclipse.linuxtools.lttng.analysis.facade.DataHandler;
		6	import org.eclipse.linuxtools.lttng.analysis.facade.TraceFacade;
		7	import org.eclipse.linuxtools.lttng.event.LttngEvent;
		8	import org.eclipse.linuxtools.lttng.trace.LTTngTrace;
		9	import org.eclipse.linuxtools.tmf.event.TmfTimeRange;
		10	import org.eclipse.linuxtools.tmf.experiment.TmfExperiment;
		11	import org.eclipse.linuxtools.tmf.trace.ITmfTrace;
		12
		13
		14	/**
		15	* this class find all event from TMF by Trace Facade,
		16	* and register it in the static Vector traceEvents.
		17	*
		18	* @author Abdelhaq Saoudi
		19	*/
		20
		21	public class RequestsEvents extends DataHandler {
		22
		23	/**
		24	* (class implemented as Singleton).
		25	*/
		26
		27	private static RequestsEvents instance_ = null;
		28
		29
		30	private RequestsEvents() { }
		31
		32	public static RequestsEvents getInstance() {
		33	if (instance_ == null)
		34	instance_ = new RequestsEvents();
		35	return instance_;
		36	}
		37
		38
		39	private final String TRACE_PATH = "/home/l3819/Bureau/traces/trace_0";
		40
		41	public static Vector<LttngEvent> traceEvents = new Vector<LttngEvent>();
		42
		43	private TmfExperiment<LttngEvent> experiment = null;
		44
		45	private TmfTimeRange timeRange = null;
		46
		47	/**
		48	* this method findEvent() retrieves all event fromTMF by traceFacade, the received event pass in the handler "this"
		49	*/
		50	public void findEvents(){
		51
		52	try {
		53	ITmfTrace[] traces = new ITmfTrace[1];
		54	traces[0] = new LTTngTrace(TRACE_PATH);
		55
		56	// Create our new experiment
		57	experiment = new TmfExperiment<LttngEvent>(LttngEvent.class, "firstExperiment", traces);
		58	//long x=experiment.getStartTime().getValue();
		59	//long y=experiment.getEndTime().getValue();
		60	//System.out.println("valeur de x: "+ x +" y: "+ y +"y-x :"+ (y-x));
		61	timeRange = experiment.getTimeRange();
		62	TraceFacade.getInstance().getAllEvents(experiment, timeRange, this);
		63	}
		64
65	catch (NullPointerException e) {
66	}
67	catch (Exception e) {
68	e.printStackTrace();
69	}
70
71	}
72
73	/**
74	* this handler register the event in the vector.
75	*/
76	public void handleData(LttngEvent event) {
77	//System.out.println("start handler");
78	traceEvents.add(event.clone());
79	}
80
81	/**
82	* Forward completion notification to the handler.
83	*/
84	public void handleCompleted() {
85
86	}
87
88
89	}
90
91
92