treetab.java

SUN公司eclipse3.2.2经典例子

/*******************************************************************************
 * Copyright (c) 2000, 2007 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.examples.controlexample;


import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;

class TreeTab extends ScrollableTab {
	/* Example widgets and groups that contain them */
	Tree tree1, tree2;
	TreeItem textNode1, imageNode1;
	Group treeGroup, imageTreeGroup, itemGroup;
	
	/* Size widgets added to the "Size" group */
	Button packColumnsButton;
	
	/* Style widgets added to the "Style" group */
	Button checkButton, fullSelectionButton;

	/* Other widgets added to the "Other" group */
	Button multipleColumns, moveableColumns, resizableColumns, headerVisibleButton, sortIndicatorButton, headerImagesButton, subImagesButton, linesVisibleButton;
	
	/* Controls and resources added to the "Colors and Fonts" group */
	static final int ITEM_FOREGROUND_COLOR = 3;
	static final int ITEM_BACKGROUND_COLOR = 4;
	static final int ITEM_FONT = 5;
	static final int CELL_FOREGROUND_COLOR = 6;
	static final int CELL_BACKGROUND_COLOR = 7;
	static final int CELL_FONT = 8;
	Color itemForegroundColor, itemBackgroundColor, cellForegroundColor, cellBackgroundColor;
	Font itemFont, cellFont;

	static String [] columnTitles	= {ControlExample.getResourceString("TableTitle_0"),
		   ControlExample.getResourceString("TableTitle_1"),
		   ControlExample.getResourceString("TableTitle_2"),
		   ControlExample.getResourceString("TableTitle_3")};
		   
	static String[][] tableData = {
			{ ControlExample.getResourceString("TableLine0_0"),
					ControlExample.getResourceString("TableLine0_1"),
					ControlExample.getResourceString("TableLine0_2"),
					ControlExample.getResourceString("TableLine0_3") },
			{ ControlExample.getResourceString("TableLine1_0"),
					ControlExample.getResourceString("TableLine1_1"),
					ControlExample.getResourceString("TableLine1_2"),
					ControlExample.getResourceString("TableLine1_3") },
			{ ControlExample.getResourceString("TableLine2_0"),
					ControlExample.getResourceString("TableLine2_1"),
					ControlExample.getResourceString("TableLine2_2"),
					ControlExample.getResourceString("TableLine2_3") } };

	Point menuMouseCoords;

	/**
	 * Creates the Tab within a given instance of ControlExample.
	 */
	TreeTab(ControlExample instance) {
		super(instance);
	}

	/**
	 * Creates the "Colors and Fonts" group.
	 */
	void createColorAndFontGroup () {
		super.createColorAndFontGroup();
		
		TableItem item = new TableItem(colorAndFontTable, SWT.None);
		item.setText(ControlExample.getResourceString ("Item_Foreground_Color"));
		item = new TableItem(colorAndFontTable, SWT.None);
		item.setText(ControlExample.getResourceString ("Item_Background_Color"));
		item = new TableItem(colorAndFontTable, SWT.None);
		item.setText(ControlExample.getResourceString ("Item_Font"));
		item = new TableItem(colorAndFontTable, SWT.None);
		item.setText(ControlExample.getResourceString ("Cell_Foreground_Color"));
		item = new TableItem(colorAndFontTable, SWT.None);
		item.setText(ControlExample.getResourceString ("Cell_Background_Color"));
		item = new TableItem(colorAndFontTable, SWT.None);
		item.setText(ControlExample.getResourceString ("Cell_Font"));

		shell.addDisposeListener(new DisposeListener() {
			public void widgetDisposed(DisposeEvent event) {
				if (itemBackgroundColor != null) itemBackgroundColor.dispose();
				if (itemForegroundColor != null) itemForegroundColor.dispose();
				if (itemFont != null) itemFont.dispose();
				if (cellBackgroundColor != null) cellBackgroundColor.dispose();
				if (cellForegroundColor != null) cellForegroundColor.dispose();
				if (cellFont != null) cellFont.dispose();
				itemBackgroundColor = null;
				itemForegroundColor = null;			
				itemFont = null;
				cellBackgroundColor = null;
				cellForegroundColor = null;			
				cellFont = null;
			}
		});
	}

	void changeFontOrColor(int index) {
		switch (index) {
		case ITEM_FOREGROUND_COLOR: {
			Color oldColor = itemForegroundColor;
			if (oldColor == null) oldColor = textNode1.getForeground ();
			colorDialog.setRGB(oldColor.getRGB());
			RGB rgb = colorDialog.open();
			if (rgb == null) return;
			oldColor = itemForegroundColor;
			itemForegroundColor = new Color (display, rgb);
			setItemForeground ();
			if (oldColor != null) oldColor.dispose ();
		}
		break;
		case ITEM_BACKGROUND_COLOR: {
			Color oldColor = itemBackgroundColor;
			if (oldColor == null) oldColor = textNode1.getBackground ();
			colorDialog.setRGB(oldColor.getRGB());
			RGB rgb = colorDialog.open();
			if (rgb == null) return;
			oldColor = itemBackgroundColor;
			itemBackgroundColor = new Color (display, rgb);
			setItemBackground ();
			if (oldColor != null) oldColor.dispose ();
		}
		break;
		case ITEM_FONT: {
			Font oldFont = itemFont;
			if (oldFont == null) oldFont = textNode1.getFont ();
			fontDialog.setFontList(oldFont.getFontData());
			FontData fontData = fontDialog.open ();
			if (fontData == null) return;
			oldFont = itemFont;
			itemFont = new Font (display, fontData);
			setItemFont ();
			setExampleWidgetSize ();
			if (oldFont != null) oldFont.dispose ();
		}
		break;
		case CELL_FOREGROUND_COLOR: {
			Color oldColor = cellForegroundColor;
			if (oldColor == null) oldColor = textNode1.getForeground (1);
			colorDialog.setRGB(oldColor.getRGB());
			RGB rgb = colorDialog.open();
			if (rgb == null) return;
			oldColor = cellForegroundColor;
			cellForegroundColor = new Color (display, rgb);
			setCellForeground ();
			if (oldColor != null) oldColor.dispose ();
		}
		break;
		case CELL_BACKGROUND_COLOR: {
			Color oldColor = cellBackgroundColor;
			if (oldColor == null) oldColor = textNode1.getBackground (1);
			colorDialog.setRGB(oldColor.getRGB());
			RGB rgb = colorDialog.open();
			if (rgb == null) return;
			oldColor = cellBackgroundColor;
			cellBackgroundColor = new Color (display, rgb);
			setCellBackground ();
			if (oldColor != null) oldColor.dispose ();
		}
		break;
		case CELL_FONT: {
			Font oldFont = cellFont;
			if (oldFont == null) oldFont = textNode1.getFont (1);
			fontDialog.setFontList(oldFont.getFontData());
			FontData fontData = fontDialog.open ();
			if (fontData == null) return;
			oldFont = cellFont;
			cellFont = new Font (display, fontData);
			setCellFont ();
			setExampleWidgetSize ();
			if (oldFont != null) oldFont.dispose ();
		}
		break;
		default:
			super.changeFontOrColor(index);
		}
	}

	/**
	 * Creates the "Other" group.
	 */
	void createOtherGroup () {
		super.createOtherGroup ();
	
		/* Create display controls specific to this example */
		linesVisibleButton = new Button (otherGroup, SWT.CHECK);
		linesVisibleButton.setText (ControlExample.getResourceString("Lines_Visible"));
		multipleColumns = new Button (otherGroup, SWT.CHECK);
		multipleColumns.setText (ControlExample.getResourceString("Multiple_Columns"));
		headerVisibleButton = new Button (otherGroup, SWT.CHECK);
		headerVisibleButton.setText (ControlExample.getResourceString("Header_Visible"));
		sortIndicatorButton = new Button (otherGroup, SWT.CHECK);
		sortIndicatorButton.setText (ControlExample.getResourceString("Sort_Indicator"));
		moveableColumns = new Button (otherGroup, SWT.CHECK);
		moveableColumns.setText (ControlExample.getResourceString("Moveable_Columns"));
		resizableColumns = new Button (otherGroup, SWT.CHECK);
		resizableColumns.setText (ControlExample.getResourceString("Resizable_Columns"));
		headerImagesButton = new Button (otherGroup, SWT.CHECK);
		headerImagesButton.setText (ControlExample.getResourceString("Header_Images"));
		subImagesButton = new Button (otherGroup, SWT.CHECK);
		subImagesButton.setText (ControlExample.getResourceString("Sub_Images"));
	
		/* Add the listeners */
		linesVisibleButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setWidgetLinesVisible ();
			}
		});
		multipleColumns.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				recreateExampleWidgets ();
			}
		});
		headerVisibleButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setWidgetHeaderVisible ();
			}
		});
		sortIndicatorButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setWidgetSortIndicator ();
			}
		});
		moveableColumns.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setColumnsMoveable ();
			}
		});
		resizableColumns.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setColumnsResizable ();
			}
		});
		headerImagesButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				recreateExampleWidgets ();
			}
		});
		subImagesButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				recreateExampleWidgets ();
			}
		});
	}
	
	/**
	 * Creates the "Example" group.
	 */
	void createExampleGroup () {
		super.createExampleGroup ();
		
		/* Create a group for the text tree */
		treeGroup = new Group (exampleGroup, SWT.NONE);
		treeGroup.setLayout (new GridLayout ());
		treeGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
		treeGroup.setText ("Tree");
	
		/* Create a group for the image tree */
		imageTreeGroup = new Group (exampleGroup, SWT.NONE);
		imageTreeGroup.setLayout (new GridLayout ());
		imageTreeGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
		imageTreeGroup.setText (ControlExample.getResourceString("Tree_With_Images"));
	}
	
	/**
	 * Creates the "Example" widgets.
	 */
	void createExampleWidgets () {
		/* Compute the widget style */
		int style = getDefaultStyle();
		if (singleButton.getSelection()) style |= SWT.SINGLE;
		if (multiButton.getSelection()) style |= SWT.MULTI;
		if (horizontalButton.getSelection ()) style |= SWT.H_SCROLL;
		if (verticalButton.getSelection ()) style |= SWT.V_SCROLL;
		if (checkButton.getSelection()) style |= SWT.CHECK;
		if (fullSelectionButton.getSelection ()) style |= SWT.FULL_SELECTION;
		if (borderButton.getSelection()) style |= SWT.BORDER;
	
		/* Create the text tree */
		tree1 = new Tree (treeGroup, style);
		boolean multiColumn = multipleColumns.getSelection();
		if (multiColumn) {
			for (int i = 0; i < columnTitles.length; i++) {
				TreeColumn treeColumn = new TreeColumn(tree1, SWT.NONE);
				treeColumn.setText(columnTitles[i]);
				treeColumn.setToolTipText(ControlExample.getResourceString("Tooltip", new String [] {columnTitles[i]}));
			}
			tree1.setSortColumn(tree1.getColumn(0));
		}
		for (int i = 0; i < 4; i++) {
			TreeItem item = new TreeItem (tree1, SWT.NONE);
			setItemText(item, i, ControlExample.getResourceString("Node_" + (i + 1)));
			if (i < 3) {
				TreeItem subitem = new TreeItem (item, SWT.NONE);
				setItemText(subitem, i, ControlExample.getResourceString("Node_" + (i + 1) + "_1"));
			}
		}
		TreeItem treeRoots[] = tree1.getItems ();
		TreeItem item = new TreeItem (treeRoots[1], SWT.NONE);
		setItemText(item, 1, ControlExample.getResourceString("Node_2_2"));
		item = new TreeItem (item, SWT.NONE);
		setItemText(item, 1, ControlExample.getResourceString("Node_2_2_1"));					
		textNode1 = treeRoots[0];
		packColumns(tree1);
		try {
			TreeColumn column = tree1.getColumn(0);
			resizableColumns.setSelection (column.getResizable());
		} catch (IllegalArgumentException ex) {}

		/* Create the image tree */	
		tree2 = new Tree (imageTreeGroup, style);
		Image image = instance.images[ControlExample.ciClosedFolder];
		if (multiColumn) {
			for (int i = 0; i < columnTitles.length; i++) {
				TreeColumn treeColumn = new TreeColumn(tree2, SWT.NONE);
				treeColumn.setText(columnTitles[i]);
				treeColumn.setToolTipText(ControlExample.getResourceString("Tooltip", new String [] {columnTitles[i]}));
				if (headerImagesButton.getSelection()) treeColumn.setImage(image);
			}
		}
		for (int i = 0; i < 4; i++) {
			item = new TreeItem (tree2, SWT.NONE);
			setItemText(item, i, ControlExample.getResourceString("Node_" + (i + 1)));
			if (multiColumn && subImagesButton.getSelection()) {
				for (int j = 0; j < columnTitles.length; j++) {
					item.setImage(j, image);
				}
			} else {
				item.setImage(image);
			}
			if (i < 3) {
				TreeItem subitem = new TreeItem (item, SWT.NONE);
				setItemText(subitem, i, ControlExample.getResourceString("Node_" + (i + 1) + "_1"));
				if (multiColumn && subImagesButton.getSelection()) {
					for (int j = 0; j < columnTitles.length; j++) {
						subitem.setImage(j, image);
					}
				} else {
					subitem.setImage(image);
				}
			}
		}
		treeRoots = tree2.getItems ();
		item = new TreeItem (treeRoots[1], SWT.NONE);
		setItemText(item, 1, ControlExample.getResourceString("Node_2_2"));
		if (multiColumn && subImagesButton.getSelection()) {
			for (int j = 0; j < columnTitles.length; j++) {
				item.setImage(j, image);
			}
		} else {
			item.setImage(image);
		}
		item = new TreeItem (item, SWT.NONE);
		setItemText(item, 1, ControlExample.getResourceString("Node_2_2_1"));
		if (multiColumn && subImagesButton.getSelection()) {
			for (int j = 0; j < columnTitles.length; j++) {
				item.setImage(j, image);
			}
		} else {
			item.setImage(image);
		}
		imageNode1 = treeRoots[0];
		packColumns(tree2);
	}
	
	void setItemText(TreeItem item, int i, String node) {
		int index = i % 3;
		if (multipleColumns.getSelection()) {
			tableData [index][0] = node;
			item.setText (tableData [index]);
		} else {
			item.setText (node);
		}		
	}
	
	/**
	 * Creates the "Size" group.  The "Size" group contains
	 * controls that allow the user to change the size of
	 * the example widgets.