1 /******************************************************************************* 2 * Copyright (c) 2009, 2015 EclipseSource Corporation and others. 3 * 4 * This program and the accompanying materials 5 * are made available under the terms of the Eclipse Public License 2.0 6 * which accompanies this distribution, and is available at 7 * https://www.eclipse.org/legal/epl-2.0/ 8 * 9 * SPDX-License-Identifier: EPL-2.0 10 * 11 * Contributors: 12 * EclipseSource Corporation - initial API and implementation 13 * Mickael Istria (Red Hat Inc.) - 434317 14 * Lars Vogel <Lars.Vogel@vogella.com> - Bug 482175 15 *******************************************************************************/ 16 package org.eclipse.pde.internal.runtime.spy.handlers; 17 18 import org.eclipse.core.commands.AbstractHandler; 19 import org.eclipse.core.commands.ExecutionEvent; 20 import org.eclipse.jface.dialogs.PopupDialog; 21 import org.eclipse.pde.internal.runtime.PDERuntimePluginImages; 22 import org.eclipse.pde.internal.runtime.spy.dialogs.MenuSpyDialog; 23 import org.eclipse.swt.SWT; 24 import org.eclipse.swt.graphics.Cursor; 25 import org.eclipse.swt.graphics.Image; 26 import org.eclipse.swt.widgets.*; 27 import org.eclipse.ui.handlers.HandlerUtil; 28 29 public class MenuSpyHandler extends AbstractHandler implements Listener { 30 31 private PopupDialog popupDialog = null; 32 private Cursor defaultCursor; 33 private Cursor spyCursor; 34 35 @Override execute(ExecutionEvent event)36 public Object execute(ExecutionEvent event) { 37 if (popupDialog != null && popupDialog.getShell() != null && !popupDialog.getShell().isDisposed()) { 38 popupDialog.close(); 39 } 40 41 Shell shell = HandlerUtil.getActiveShell(event); 42 if (shell != null) { 43 Display display = shell.getDisplay(); 44 display.addFilter(SWT.Selection, this); 45 display.addFilter(SWT.KeyDown, this); 46 display.addFilter(SWT.Show, this); 47 if (display.getActiveShell() != null) { 48 defaultCursor = display.getActiveShell().getCursor(); 49 Image image = PDERuntimePluginImages.get(PDERuntimePluginImages.IMG_MENUSPY_OBJ); 50 spyCursor = new Cursor(display, image.getImageData(), 7, 7); 51 display.getActiveShell().setCursor(spyCursor); 52 } 53 } 54 return null; 55 } 56 57 // TODO clean up this code 58 @Override handleEvent(Event event)59 public void handleEvent(Event event) { 60 switch (event.type) { 61 case SWT.KeyDown: 62 if (event.keyCode == SWT.ESC) 63 break; 64 case SWT.Show: 65 if (spyCursor != null) { 66 Shell shell = event.display.getActiveShell(); 67 if (shell != null) { 68 shell.setCursor(spyCursor); 69 } 70 } 71 return; 72 } 73 event.display.removeFilter(SWT.Selection, this); 74 event.display.removeFilter(SWT.KeyDown, this); 75 event.display.removeFilter(SWT.Show, this); 76 if (spyCursor != null) { 77 if (event.display.getActiveShell() != null) { 78 event.display.getActiveShell().setCursor(defaultCursor); 79 defaultCursor = null; 80 spyCursor.dispose(); 81 spyCursor = null; 82 } 83 } 84 85 if (event.type == SWT.Selection) { 86 Shell shell = event.display.getActiveShell(); 87 if (shell == null) { // see bug 434317 88 if (event.widget instanceof Menu) { 89 shell = ((Menu) event.widget).getShell(); 90 } else if (event.widget instanceof MenuItem) { 91 shell = ((MenuItem) event.widget).getParent().getShell(); 92 } 93 } 94 MenuSpyDialog dialog = new MenuSpyDialog(shell, event, shell.getDisplay().getCursorLocation()); 95 popupDialog = dialog; 96 dialog.create(); 97 dialog.open(); 98 event.doit = false; 99 event.type = SWT.None; 100 } 101 } 102 } 103