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

class CoolBarTab extends Tab {
	/* Example widgets and group that contains them */
	CoolBar coolBar;
	CoolItem pushItem, dropDownItem, radioItem, checkItem, textItem;
	Group coolBarGroup;
	
	/* Style widgets added to the "Style" group */
	Button horizontalButton, verticalButton;
	Button dropDownButton, flatButton;

	/* Other widgets added to the "Other" group */
	Button lockedButton;
	
	Point[] sizes;
	int[] wrapIndices;
	int[] order;
	
	/**
	 * Creates the Tab within a given instance of ControlExample.
	 */
	CoolBarTab(ControlExample instance) {
		super(instance);
	}
	
	/**
	 * Creates the "Other" group.
	 */
	void createOtherGroup () {
		super.createOtherGroup ();
	
		/* Create display controls specific to this example */
		lockedButton = new Button (otherGroup, SWT.CHECK);
		lockedButton.setText (ControlExample.getResourceString("Locked"));
	
		/* Add the listeners */
		lockedButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setWidgetLocked ();
			}
		});
	}
	
	/**
	 * Creates the "Example" group.
	 */
	void createExampleGroup () {
		super.createExampleGroup ();
		coolBarGroup = new Group (exampleGroup, SWT.NONE);
		coolBarGroup.setLayout (new GridLayout ());
		coolBarGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
		coolBarGroup.setText ("CoolBar");
	}
	
	/**
	 * Creates the "Example" widgets.
	 */
	void createExampleWidgets () {
		int style = getDefaultStyle(), itemStyle = 0;

		/* Compute the widget, item, and item toolBar styles */
		int toolBarStyle = SWT.FLAT;
		boolean vertical = false;
		if (horizontalButton.getSelection ()) {
			style |= SWT.HORIZONTAL;
			toolBarStyle |= SWT.HORIZONTAL;
		}
		if (verticalButton.getSelection ()) {
			style |= SWT.VERTICAL;
			toolBarStyle |= SWT.VERTICAL;
			vertical = true;
		}
		if (borderButton.getSelection()) style |= SWT.BORDER;
		if (flatButton.getSelection()) style |= SWT.FLAT;
		if (dropDownButton.getSelection()) itemStyle |= SWT.DROP_DOWN;
	
		/*
		* Create the example widgets.
		*/
		coolBar = new CoolBar (coolBarGroup, style);
		
		/* Create the push button toolbar cool item */
		ToolBar toolBar = new ToolBar (coolBar, toolBarStyle);
		ToolItem item = new ToolItem (toolBar, SWT.PUSH);
		item.setImage (instance.images[ControlExample.ciClosedFolder]);
		item.setToolTipText ("SWT.PUSH");
		item = new ToolItem (toolBar, SWT.PUSH);
		item.setImage (instance.images[ControlExample.ciOpenFolder]);
		item.setToolTipText ("SWT.PUSH");
		item = new ToolItem (toolBar, SWT.PUSH);
		item.setImage (instance.images[ControlExample.ciTarget]);
		item.setToolTipText ("SWT.PUSH");
		item = new ToolItem (toolBar, SWT.SEPARATOR);
		item = new ToolItem (toolBar, SWT.PUSH);
		item.setImage (instance.images[ControlExample.ciClosedFolder]);
		item.setToolTipText ("SWT.PUSH");
		item = new ToolItem (toolBar, SWT.PUSH);
		item.setImage (instance.images[ControlExample.ciOpenFolder]);
		item.setToolTipText ("SWT.PUSH");		
		pushItem = new CoolItem (coolBar, itemStyle);
		pushItem.setControl (toolBar);
		pushItem.addSelectionListener (new CoolItemSelectionListener());
				
		/* Create the dropdown toolbar cool item */
		toolBar = new ToolBar (coolBar, toolBarStyle);
		item = new ToolItem (toolBar, SWT.DROP_DOWN);
		item.setImage (instance.images[ControlExample.ciOpenFolder]);
		item.setToolTipText ("SWT.DROP_DOWN");
		item.addSelectionListener (new DropDownSelectionListener());
		item = new ToolItem (toolBar, SWT.DROP_DOWN);
		item.setImage (instance.images[ControlExample.ciClosedFolder]);
		item.setToolTipText ("SWT.DROP_DOWN");
		item.addSelectionListener (new DropDownSelectionListener());
		dropDownItem = new CoolItem (coolBar, itemStyle);
		dropDownItem.setControl (toolBar);
		dropDownItem.addSelectionListener (new CoolItemSelectionListener());

		/* Create the radio button toolbar cool item */
		toolBar = new ToolBar (coolBar, toolBarStyle);
		item = new ToolItem (toolBar, SWT.RADIO);
		item.setImage (instance.images[ControlExample.ciClosedFolder]);
		item.setToolTipText ("SWT.RADIO");
		item = new ToolItem (toolBar, SWT.RADIO);
		item.setImage (instance.images[ControlExample.ciClosedFolder]);
		item.setToolTipText ("SWT.RADIO");
		item = new ToolItem (toolBar, SWT.RADIO);
		item.setImage (instance.images[ControlExample.ciClosedFolder]);
		item.setToolTipText ("SWT.RADIO");
		radioItem = new CoolItem (coolBar, itemStyle);
		radioItem.setControl (toolBar);
		radioItem.addSelectionListener (new CoolItemSelectionListener());
		
		/* Create the check button toolbar cool item */
		toolBar = new ToolBar (coolBar, toolBarStyle);
		item = new ToolItem (toolBar, SWT.CHECK);
		item.setImage (instance.images[ControlExample.ciClosedFolder]);
		item.setToolTipText ("SWT.CHECK");
		item = new ToolItem (toolBar, SWT.CHECK);
		item.setImage (instance.images[ControlExample.ciTarget]);
		item.setToolTipText ("SWT.CHECK");
		item = new ToolItem (toolBar, SWT.CHECK);
		item.setImage (instance.images[ControlExample.ciOpenFolder]);
		item.setToolTipText ("SWT.CHECK");
		item = new ToolItem (toolBar, SWT.CHECK);
		item.setImage (instance.images[ControlExample.ciTarget]);
		item.setToolTipText ("SWT.CHECK");
		checkItem = new CoolItem (coolBar, itemStyle);
		checkItem.setControl (toolBar);
		checkItem.addSelectionListener (new CoolItemSelectionListener());
		
		/* Create the text cool item */
		if (!vertical) {
			Text text = new Text (coolBar, SWT.BORDER | SWT.SINGLE);
			textItem = new CoolItem (coolBar, itemStyle);
			textItem.setControl (text);
			textItem.addSelectionListener (new CoolItemSelectionListener());
			Point textSize = text.computeSize(SWT.DEFAULT, SWT.DEFAULT);
			textSize = textItem.computeSize(textSize.x, textSize.y);
			textItem.setMinimumSize(textSize);
			textItem.setPreferredSize(textSize);
			textItem.setSize(textSize);
		}

		/* Set the sizes after adding all cool items */
		CoolItem[] coolItems = coolBar.getItems();
		for (int i = 0; i < coolItems.length; i++) {
			CoolItem coolItem = coolItems[i];
			Control control = coolItem.getControl();
			Point size = control.computeSize(SWT.DEFAULT, SWT.DEFAULT);
			Point coolSize = coolItem.computeSize(size.x, size.y);
			if (control instanceof ToolBar) {
				ToolBar bar = (ToolBar)control;
				if (bar.getItemCount() > 0) {
					if (vertical) {
						size.y = bar.getItem(0).getBounds().height;
					} else {
						size.x = bar.getItem(0).getWidth();
					}
				}
			}
			coolItem.setMinimumSize(size);
			coolItem.setPreferredSize(coolSize);
			coolItem.setSize(coolSize);
		}
		
		/* If we have saved state, restore it */
		if (order != null && order.length == coolBar.getItemCount()) {
			coolBar.setItemLayout(order, wrapIndices, sizes);
		} else {
			coolBar.setWrapIndices(new int[] {1, 3});
		}
		
		/* Add a listener to resize the group box to match the coolbar */
		coolBar.addListener(SWT.Resize, new Listener() {
			public void handleEvent(Event event) {
				exampleGroup.layout();
			}
		});
	}
	
	/**
	 * Creates the "Style" group.
	 */
	void createStyleGroup() {
		super.createStyleGroup();
	
		/* Create the extra widgets */
		horizontalButton = new Button (styleGroup, SWT.RADIO);
		horizontalButton.setText ("SWT.HORIZONTAL");
		verticalButton = new Button (styleGroup, SWT.RADIO);
		verticalButton.setText ("SWT.VERTICAL");
		borderButton = new Button (styleGroup, SWT.CHECK);
		borderButton.setText ("SWT.BORDER");
		flatButton = new Button (styleGroup, SWT.CHECK);
		flatButton.setText ("SWT.FLAT");
		Group itemGroup = new Group(styleGroup, SWT.NONE);
		itemGroup.setLayout (new GridLayout ());
		itemGroup.setLayoutData (new GridData (GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
		itemGroup.setText(ControlExample.getResourceString("Item_Styles"));
		dropDownButton = new Button (itemGroup, SWT.CHECK);
		dropDownButton.setText ("SWT.DROP_DOWN");
	}
	
	/**
	 * Disposes the "Example" widgets.
	 */
	void disposeExampleWidgets () {
		/* store the state of the toolbar if applicable */