- 

/*******************************************************************************

 * Copyright (c) 2012 Red Hat, Inc.

 * 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:

 *    Camilo Bernal <cabernal@redhat.com> - Initial Implementation.

 *******************************************************************************/

package org.eclipse.linuxtools.internal.perf.ui;

import java.util.ArrayList;

import org.eclipse.jface.viewers.ArrayContentProvider;

import org.eclipse.jface.viewers.TableViewer;

import org.eclipse.jface.viewers.TableViewerColumn;

import org.eclipse.linuxtools.internal.perf.model.PMSymbolMatch;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Table;

import org.eclipse.swt.widgets.TableColumn;

import org.eclipse.ui.part.ViewPart;

public class PerfDiffView extends ViewPart {

	private static final String ID = "org.eclipse.linuxtools.internal.perf.views.SessionDiffView";

	private TableViewer tableviewer;

	private ArrayList<PMSymbolMatch> result = new ArrayList<PMSymbolMatch>();

	@Override

	public void createPartControl(Composite parent) {

		GridLayout layout = new GridLayout(1, false);

		parent.setLayout(layout);

		tableviewer = new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL

				| SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.BORDER);

		createColumns(parent, tableviewer);

		final Table table = tableviewer.getTable();

		table.setHeaderVisible(true);

		table.setLinesVisible(true);

		tableviewer.setContentProvider(new ArrayContentProvider());

		// Layout for the table

		GridData gridData = new GridData();

		gridData.verticalAlignment = GridData.FILL;

		gridData.horizontalSpan = 2;

		gridData.grabExcessHorizontalSpace = true;

		gridData.grabExcessVerticalSpace = true;

		gridData.horizontalAlignment = GridData.FILL;

		tableviewer.setContentProvider(new ArrayContentProvider());

		tableviewer.getControl().setLayoutData(gridData);

	}

	private void createColumns(final Composite parent, final TableViewer viewer) {

		String[] titles = { "Function", "New Overhead (%)", "Old Overhead (%)",

				"Result", "Event", "" };

		int[] bounds = { 100, 133, 135, 100, 100, 1 };

		final PerfDiffTableSorter tableSorter = new PerfDiffTableSorter();

		final Table table = tableviewer.getTable();

		for (int i = 0; i < titles.length; i++) {

			final int index = i;

			createTableViewerColumn(titles[i], bounds[i], index, tableSorter,

					table);

		}

		tableviewer.setLabelProvider(new PerfDiffLabelProvider());

		tableviewer.setSorter(tableSorter);

	}

	private TableViewerColumn createTableViewerColumn(String title, int bound,

			final int colIndex, final PerfDiffTableSorter tableSorter,

			final Table table) {

		final TableViewerColumn viewerColumn = new TableViewerColumn(

				tableviewer, SWT.NONE);

		final TableColumn column = viewerColumn.getColumn();

		column.setText(title);

		column.setWidth(bound);

		column.setResizable(true);

		column.setMoveable(true);

		column.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				tableSorter.setColumnIndex(colIndex);

				int dir = table.getSortDirection();

				if (table.getSortColumn() == column) {

					dir = (dir == SWT.UP) ? SWT.DOWN : SWT.UP;

				} else {

					dir = SWT.DOWN;

				}

				table.setSortDirection(dir);

				table.setSortColumn(column);

				tableviewer.refresh();

			}

		});

		return viewerColumn;

	}

	@Override

	public void setFocus() {

		tableviewer.getControl().setFocus();

	}

	public void setResult(ArrayList<PMSymbolMatch> result) {

		this.result = result;

	}

	public void refreshView() {

		tableviewer.setInput(result.toArray());

		tableviewer.refresh();

	}

}