tab.java

SUN公司eclipse3.2.2经典例子

		otherGroup = new Group (controlGroup, SWT.NONE);
		otherGroup.setLayout (new GridLayout ());
		otherGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, false, false));
		otherGroup.setText (ControlExample.getResourceString("Other"));
	
		/* Create the controls */
		enabledButton = new Button(otherGroup, SWT.CHECK);
		enabledButton.setText(ControlExample.getResourceString("Enabled"));
		visibleButton = new Button(otherGroup, SWT.CHECK);
		visibleButton.setText(ControlExample.getResourceString("Visible"));
		backgroundImageButton = new Button(otherGroup, SWT.CHECK);
		backgroundImageButton.setText(ControlExample.getResourceString("BackgroundImage"));
		popupMenuButton = new Button(otherGroup, SWT.CHECK);
		popupMenuButton.setText(ControlExample.getResourceString("PopupMenu"));
		
		/* Add the listeners */
		enabledButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setExampleWidgetEnabled ();
			}
		});
		visibleButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setExampleWidgetVisibility ();
			}
		});
		backgroundImageButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setExampleWidgetBackgroundImage ();
			}
		});
		popupMenuButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setExampleWidgetPopupMenu ();
			}
		});
	
		/* Set the default state */
		enabledButton.setSelection(true);
		visibleButton.setSelection(true);
		backgroundImageButton.setSelection(false);
		popupMenuButton.setSelection(false);
	}
	
	/**
	 * Creates the "Background Mode" group.
	 */
	void createBackgroundModeGroup () {
		// note that this method must be called after createExampleWidgets
		if (getExampleControls ().length == 0) return;
		
		/* Create the group */
		backgroundModeGroup = new Group (controlGroup, SWT.NONE);
		backgroundModeGroup.setLayout (new GridLayout ());
		backgroundModeGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, false, false));
		backgroundModeGroup.setText (ControlExample.getResourceString("Background_Mode"));
	
		/* Create the controls */
		backgroundModeCombo = new Combo(backgroundModeGroup, SWT.READ_ONLY);
		backgroundModeCombo.setItems(new String[] {"SWT.INHERIT_NONE", "SWT.INHERIT_DEFAULT", "SWT.INHERIT_FORCE"});
		backgroundModeImageButton = new Button(backgroundModeGroup, SWT.CHECK);
		backgroundModeImageButton.setText(ControlExample.getResourceString("BackgroundImage"));
		backgroundModeColorButton = new Button(backgroundModeGroup, SWT.CHECK);
		backgroundModeColorButton.setText(ControlExample.getResourceString("BackgroundColor"));
	
		/* Add the listeners */
		backgroundModeCombo.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setExampleGroupBackgroundMode ();
			}
		});
		backgroundModeImageButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setExampleGroupBackgroundImage ();
			}
		});
		backgroundModeColorButton.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected (SelectionEvent event) {
				setExampleGroupBackgroundColor ();
			}
		});
	
		/* Set the default state */
		backgroundModeCombo.setText(backgroundModeCombo.getItem(0));
		backgroundModeImageButton.setSelection(false);
		backgroundModeColorButton.setSelection(false);
	}
	
	/**
	 * Create the event console popup menu.
	 */
	void createEventConsolePopup () {
		Menu popup = new Menu (shell, SWT.POP_UP);
		eventConsole.setMenu (popup);

		MenuItem cut = new MenuItem (popup, SWT.PUSH);
		cut.setText (ControlExample.getResourceString("MenuItem_Cut"));
		cut.addListener (SWT.Selection, new Listener () {
			public void handleEvent (Event event) {
				eventConsole.cut ();
			}
		});
		MenuItem copy = new MenuItem (popup, SWT.PUSH);
		copy.setText (ControlExample.getResourceString("MenuItem_Copy"));
		copy.addListener (SWT.Selection, new Listener () {
			public void handleEvent (Event event) {
				eventConsole.copy ();
			}
		});
		MenuItem paste = new MenuItem (popup, SWT.PUSH);
		paste.setText (ControlExample.getResourceString("MenuItem_Paste"));
		paste.addListener (SWT.Selection, new Listener () {
			public void handleEvent (Event event) {
				eventConsole.paste ();
			}
		});
		new MenuItem (popup, SWT.SEPARATOR);
		MenuItem selectAll = new MenuItem (popup, SWT.PUSH);
		selectAll.setText(ControlExample.getResourceString("MenuItem_SelectAll"));
		selectAll.addListener (SWT.Selection, new Listener () {
			public void handleEvent (Event event) {
				eventConsole.selectAll ();
			}
		});
	}

	/**
	 * Creates the "Example" group.  The "Example" group
	 * is typically the left hand column in the tab.
	 */
	void createExampleGroup () {
		exampleGroup = new Group (tabFolderPage, SWT.NONE);
		exampleGroup.setLayout (new GridLayout ());
		exampleGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true));
	}
	
	/**
	 * Creates the "Example" widget children of the "Example" group.
	 * Subclasses override this method to create the particular
	 * example control.
	 */
	void createExampleWidgets () {
		/* Do nothing */
	}
	
	/**
	 * Creates and opens the "Listener selection" dialog.
	 */
	void createListenerSelectionDialog () {
		final Shell dialog = new Shell (shell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
		dialog.setText (ControlExample.getResourceString ("Select_Listeners"));
		dialog.setLayout (new GridLayout (2, false));
		final Table table = new Table (dialog, SWT.BORDER | SWT.V_SCROLL | SWT.CHECK);
		GridData data = new GridData(GridData.FILL_BOTH);
		data.verticalSpan = 2;
		table.setLayoutData(data);
		for (int i = 0; i < EVENT_NAMES.length; i++) {
			TableItem item = new TableItem (table, SWT.NONE);
			item.setText ((String)EVENT_NAMES[i][0]);
			item.setChecked (eventsFilter[i]);
		}
		final String [] customNames = getCustomEventNames ();
		for (int i = 0; i < customNames.length; i++) {
			TableItem item = new TableItem (table, SWT.NONE);
			item.setText (customNames[i]);
			item.setChecked (eventsFilter[EVENT_NAMES.length + i]);
		}
		Button selectAll = new Button (dialog, SWT.PUSH);
		selectAll.setText(ControlExample.getResourceString ("Select_All"));
		selectAll.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
		selectAll.addSelectionListener (new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				TableItem [] items = table.getItems();
				for (int i = 0; i < EVENT_NAMES.length; i++) {
					items[i].setChecked(true);
				}
				for (int i = 0; i < customNames.length; i++) {
					items[EVENT_NAMES.length + i].setChecked(true);
				}
			}
		});
		Button deselectAll = new Button (dialog, SWT.PUSH);
		deselectAll.setText(ControlExample.getResourceString ("Deselect_All"));
		deselectAll.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_BEGINNING));
		deselectAll.addSelectionListener (new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				TableItem [] items = table.getItems();
				for (int i = 0; i < EVENT_NAMES.length; i++) {
					items[i].setChecked(false);
				}
				for (int i = 0; i < customNames.length; i++) {
					items[EVENT_NAMES.length + i].setChecked(false);
				}
			}
		});
		new Label(dialog, SWT.NONE); /* Filler */
		Button ok = new Button (dialog, SWT.PUSH);
		ok.setText(ControlExample.getResourceString ("OK"));
		dialog.setDefaultButton(ok);
		ok.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
		ok.addSelectionListener (new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				TableItem [] items = table.getItems();
				for (int i = 0; i < EVENT_NAMES.length; i++) {
					eventsFilter[i] = items[i].getChecked();
				}
				for (int i = 0; i < customNames.length; i++) {
					eventsFilter[EVENT_NAMES.length + i] = items[EVENT_NAMES.length + i].getChecked();
				}
				dialog.dispose();
			}
		});
		dialog.pack ();
		dialog.open ();
		while (! dialog.isDisposed()) {
			if (! display.readAndDispatch()) display.sleep();
		}
	}

	/**
	 * Creates the "Listeners" group.  The "Listeners" group
	 * goes below the "Example" and "Control" groups.
	 */
	void createListenersGroup () {
		listenersGroup = new Group (tabFolderPage, SWT.NONE);
		listenersGroup.setLayout (new GridLayout (3, false));
		listenersGroup.setLayoutData (new GridData (SWT.FILL, SWT.FILL, true, true, 2, 1));
		listenersGroup.setText (ControlExample.getResourceString ("Listeners"));

		/*
		 * Create the button to access the 'Listeners' dialog.
		 */
		Button listenersButton = new Button (listenersGroup, SWT.PUSH);
		listenersButton.setText (ControlExample.getResourceString ("Select_Listeners"));
		listenersButton.addSelectionListener (new SelectionAdapter() {
			public void widgetSelected (SelectionEvent e) {
				createListenerSelectionDialog ();
				recreateExampleWidgets ();
			}
		});
		
		/*
		 * Create the checkbox to add/remove listeners to/from the example widgets.
		 */
		final Button listenCheckbox = new Button (listenersGroup, SWT.CHECK);
		listenCheckbox.setText (ControlExample.getResourceString ("Listen"));
		listenCheckbox.addSelectionListener (new SelectionAdapter () {
			public void widgetSelected(SelectionEvent e) {
				logging = listenCheckbox.getSelection ();
				recreateExampleWidgets ();
			}
		});

		/*
		 * Create the button to clear the text.
		 */
		Button clearButton = new Button (listenersGroup, SWT.PUSH);
		clearButton.setText (ControlExample.getResourceString ("Clear"));
		clearButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END));
		clearButton.addSelectionListener (new SelectionAdapter() {
			public void widgetSelected (SelectionEvent e) {
				eventConsole.setText ("");
			}
		});
		
		/* Initialize the eventsFilter to log all events. */
		int customEventCount = getCustomEventNames ().length;
		eventsFilter = new boolean [EVENT_NAMES.length + customEventCount];
		for (int i = 0; i < EVENT_NAMES.length + customEventCount; i++) {
			eventsFilter [i] = true;
		}

		/* Create the event console Text. */
		eventConsole = new Text (listenersGroup, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL);
		GridData data = new GridData (GridData.FILL_BOTH);
		data.horizontalSpan = 3;
		data.heightHint = 80;
		eventConsole.setLayoutData (data);
		createEventConsolePopup ();
		eventConsole.addKeyListener (new KeyAdapter () {
			public void keyPressed (KeyEvent e) {
				if ((e.keyCode == 'A' || e.keyCode == 'a') && (e.stateMask & SWT.MOD1) != 0) {
					eventConsole.selectAll ();
					e.doit = false;
				}
			}
		});
	}
	
	/**
	 * Returns a list of set/get API method names (without the set/get prefix)
	 * that can be used to set/get values in the example control(s).
	 */
	String[] getMethodNames() {
		return null;
	}

	void createSetGetDialog(int x, int y, String[] methodNames) {
		final Shell dialog = new Shell(shell, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MODELESS);
		dialog.setLayout(new GridLayout(2, false));
		dialog.setText(getTabText() + " " + ControlExample.getResourceString ("Set_Get"));
		nameCombo = new Combo(dialog, SWT.READ_ONLY);
		nameCombo.setItems(methodNames);
		nameCombo.setText(methodNames[0]);
		nameCombo.setVisibleItemCount(methodNames.length);
		nameCombo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
		nameCombo.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				resetLabels();
			}
		});
		returnTypeLabel = new Label(dialog, SWT.NONE);
		returnTypeLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, false, false));
		setButton = new Button(dialog, SWT.PUSH);
		setButton.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, false, false));
		setButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				setValue();
				setText.selectAll();
				setText.setFocus();
			}
		});
		setText = new Text(dialog, SWT.SINGLE | SWT.BORDER);
		setText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false));
		getButton = new Button(dialog, SWT.PUSH);
		getButton.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, false, false));
		getButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				getValue();
			}
		});
		getText = new Text(dialog, SWT.MULTI | SWT.BORDER | SWT.READ_ONLY | SWT.H_SCROLL | SWT.V_SCROLL);
		GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
		data.widthHint = 240;
		data.heightHint = 200;
		getText.setLayoutData(data);
		resetLabels();
		dialog.setDefaultButton(setButton);
		dialog.pack();
		dialog.setLocation(x, y);
		dialog.open();
	}

	void resetLabels() {
		String methodRoot = nameCombo.getText();
		returnTypeLabel.setText(parameterInfo(methodRoot));
		setButton.setText(setMethodName(methodRoot));
		getButton.setText("get" + methodRoot);
		setText.setText("");
		getText.setText("");
		getValue();
		setText.setFocus();
	}

	String setMethodName(String methodRoot) {
		return "set" + methodRoot;
	}

	String parameterInfo(String methodRoot) {
		String typeName = null;
		Class returnType = getReturnType(methodRoot);
		boolean isArray = returnType.isArray();
		if (isArray) {
			typeName = returnType.getComponentType().getName();
		} else {