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/*******************************************************************************
* Copyright (c) 2009, 2016 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.layout.*;
import org.eclipse.swt.widgets.*;
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, 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 ();
}
}
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