Attachment 73152 Details for Bug 195223 – Test snippet

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Test snippet

Snippet014TreeViewerNoMandatoryLabelProvider.java (text/plain), 6.34 KB, created by Thomas Schindl

on 2007-07-05 15:09:54 EDT

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Description:

Filename:

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Creator: Thomas Schindl

Created: 2007-07-05 15:09:54 EDT

Size: 6.34 KB

patch

obsolete

>/*******************************************************************************
> * Copyright (c) 2006 Tom Schindl and others.
> * 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:
> *     Tom Schindl - initial API and implementation
> *******************************************************************************/
>
>package org.eclipse.jface.snippets.viewers;
>
>import java.util.ArrayList;
>
>import org.eclipse.jface.resource.FontRegistry;
>import org.eclipse.jface.viewers.CheckboxTreeViewer;
>import org.eclipse.jface.viewers.ITableColorProvider;
>import org.eclipse.jface.viewers.ITableFontProvider;
>import org.eclipse.jface.viewers.ITableLabelProvider;
>import org.eclipse.jface.viewers.ITreeContentProvider;
>import org.eclipse.jface.viewers.LabelProvider;
>import org.eclipse.jface.viewers.TreeViewer;
>import org.eclipse.jface.viewers.Viewer;
>import org.eclipse.jface.viewers.ViewerFilter;
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.events.SelectionAdapter;
>import org.eclipse.swt.events.SelectionEvent;
>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.layout.FillLayout;
>import org.eclipse.swt.widgets.Button;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Shell;
>import org.eclipse.swt.widgets.TreeColumn;
>
>/**
> * A simple TreeViewer to demonstrate usage
> * 
> * @author Tom Schindl <tom.schindl@bestsolution.at>
> * 
> */
>public class Snippet014TreeViewerNoMandatoryLabelProvider {
>	private static Image[] images;
>	
>	private class MyContentProvider implements ITreeContentProvider {
>
>		/*
>		 * (non-Javadoc)
>		 * 
>		 * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
>		 */
>		public Object[] getElements(Object inputElement) {
>			return ((MyModel) inputElement).child.toArray();
>		}
>
>		/*
>		 * (non-Javadoc)
>		 * 
>		 * @see org.eclipse.jface.viewers.IContentProvider#dispose()
>		 */
>		public void dispose() {
>
>		}
>
>		/*
>		 * (non-Javadoc)
>		 * 
>		 * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer,
>		 *      java.lang.Object, java.lang.Object)
>		 */
>		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
>
>		}
>
>		/*
>		 * (non-Javadoc)
>		 * 
>		 * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
>		 */
>		public Object[] getChildren(Object parentElement) {
>			return getElements(parentElement);
>		}
>
>		/*
>		 * (non-Javadoc)
>		 * 
>		 * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
>		 */
>		public Object getParent(Object element) {
>			if (element == null) {
>				return null;
>			}
>
>			return ((MyModel) element).parent;
>		}
>
>		/*
>		 * (non-Javadoc)
>		 * 
>		 * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
>		 */
>		public boolean hasChildren(Object element) {
>			return ((MyModel) element).child.size() > 0;
>		}
>
>	}
>
>	public class MyModel {
>		public MyModel parent;
>
>		public ArrayList child = new ArrayList();
>
>		public int counter;
>
>		public MyModel(int counter, MyModel parent) {
>			this.parent = parent;
>			this.counter = counter;
>		}
>
>		public String toString() {
>			String rv = "Item ";
>			if (parent != null) {
>				rv = parent.toString() + ".";
>			}
>
>			rv += counter;
>
>			return rv;
>		}
>	}
>
>	public class MyLabelProvider extends LabelProvider implements
>			ITableLabelProvider {
>		FontRegistry registry = new FontRegistry();
>
>		public Image getColumnImage(Object element, int columnIndex) {
>			if( columnIndex == 1 && ((MyModel)element).counter % 2 == 0 ) {
>				return images[0];
>			}
>			return null;
>		}
>
>		public String getColumnText(Object element, int columnIndex) {
>			if( columnIndex == 0 ) {
>				return "Column " + columnIndex + " => " + element.toString();
>			}
>			return "";
>		}
>	}
>
>	public Snippet014TreeViewerNoMandatoryLabelProvider(Shell shell) {
>		final CheckboxTreeViewer v = new CheckboxTreeViewer(shell);
>		
>		TreeColumn column = new TreeColumn(v.getTree(),SWT.NONE);
>		column.setWidth(200);
>		column.setText("Column 1");
>		
>		column = new TreeColumn(v.getTree(),SWT.NONE);
>		column.setWidth(200);
>		column.setText("Column 2");
>		
>		v.setLabelProvider(new MyLabelProvider());
>		v.setContentProvider(new MyContentProvider());
>		v.setInput(createModel());
>		
>		Button b = new Button(shell,SWT.PUSH);
>		b.addSelectionListener(new SelectionAdapter() {
>			private boolean b = true;
>			public void widgetSelected(SelectionEvent e) {
>				if( b ) {
>					v.setFilters(new ViewerFilter[] {new ViewerFilter() {
>
>						public boolean select(Viewer viewer,
>								Object parentElement, Object element) {
>							
>							return ((MyModel)element).counter % 2 == 0;
>						}
>						
>					}});
>					b = false;
>				} else {
>					v.setFilters(new ViewerFilter[0]);
>					b = true;
>				}
>				
>			}
>			
>		});
>	}
>
>	private MyModel createModel() {
>
>		MyModel root = new MyModel(0, null);
>		root.counter = 0;
>
>		MyModel tmp;
>		for (int i = 1; i < 10; i++) {
>			tmp = new MyModel(i, root);
>			root.child.add(tmp);
>			for (int j = 1; j < i; j++) {
>				tmp.child.add(new MyModel(j, tmp));
>			}
>		}
>
>		return root;
>	}
>
>	private static Image createImage(Display display, int red, int green, int blue) {
>		Color color = new Color(display,red,green,blue);
>		Image image = new Image(display,10,10);
>		GC gc = new GC(image);
>		gc.setBackground(color);
>		gc.fillRectangle(0, 0, 10, 10);
>		gc.dispose();
>		
>		return image;
>	}
>	
>	public static void main(String[] args) {
>		Display display = new Display();
>		
>		images = new Image[4];
>		images[0] = createImage(display,0,0,255);
>		images[1] = createImage(display,0,255,255);
>		images[2] = createImage(display,0,255,0);
>		images[3] = createImage(display,255,0,255);
>		
>		Shell shell = new Shell(display);
>		shell.setLayout(new FillLayout());
>		new Snippet014TreeViewerNoMandatoryLabelProvider(shell);
>		shell.open();
>
>		while (!shell.isDisposed()) {
>			if (!display.readAndDispatch())
>				display.sleep();
>		}
>
>		display.dispose();
>	}
>}

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Attachments on bug 195223: 72928 | 72929 | 73152