| /******************************************************************************* |
| * Copyright (c) 2009 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.snippets; |
| |
| /* |
| * Browser example snippet: Close a Browser such that it can be |
| * cancelled by an onbeforeunload handler. |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| * |
| * @since 3.6 |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.browser.*; |
| import org.eclipse.swt.widgets.*; |
| import org.eclipse.swt.layout.*; |
| |
| public class Snippet326 { |
| static final String HTML = |
| "<html><head><script>" + |
| "function doit() {" + |
| " return 'The box may contain some unsaved text.';" + |
| "}" + |
| "window.onbeforeunload = doit;" + |
| "</script></head><body><textarea rows=\"5\" cols=\"22\">some text</textarea></body></html>"; |
| |
| public static void main(String[] args) { |
| Display display = new Display(); |
| Shell shell = new Shell(display); |
| shell.setLayout(new GridLayout()); |
| |
| final Browser browser; |
| try { |
| browser = new Browser(shell, SWT.NONE); |
| } catch (SWTError e) { |
| System.out.println("Could not instantiate Browser: " + e.getMessage()); |
| display.dispose(); |
| return; |
| } |
| browser.setLayoutData(new GridData(400,400)); |
| browser.setText(HTML); |
| |
| final Button button = new Button(shell, SWT.PUSH); |
| button.setText("Invoke Browser.close()"); |
| button.addListener(SWT.Selection, new Listener() { |
| @Override |
| public void handleEvent(Event event) { |
| boolean result = browser.close(); |
| System.out.println("was Browser disposed: " + result); |
| if (result) { |
| button.setEnabled(false); |
| } |
| } |
| }); |
| shell.pack(); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) display.sleep(); |
| } |
| display.dispose (); |
| } |
| |
| } |
