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/*******************************************************************************
 * Copyright (c) 2003, 2009 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.browser;

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

/**
 * A WindowEvent is sent by a {@link Browser} when
 * a new window needs to be created or when an existing window needs to be
 * closed. This notification occurs when a javascript command such as
 * window.open or window.close gets executed by
 * a Browser.
 *
 * 
 * The following example shows how WindowEvent's are typically
 * handled.
 *
 * 
 *	public static void main(String[] args) {
 *		Display display = new Display();
 *		Shell shell = new Shell(display);
 *		shell.setText("Main Window");
 *		shell.setLayout(new FillLayout());
 *		Browser browser = new Browser(shell, SWT.NONE);
 *		initialize(display, browser);
 *		shell.open();
 *		browser.setUrl("http://www.eclipse.org");
 *		while (!shell.isDisposed()) {
 *			if (!display.readAndDispatch())
 *				display.sleep();
 *		}
 *		display.dispose();
 *	}
 *
 *	static void initialize(final Display display, Browser browser) {
 *		browser.addOpenWindowListener(new OpenWindowListener() {
 *			public void open(WindowEvent event) {
 *				// Certain platforms can provide a default full browser.
 *				// simply return in that case if the application prefers
 *				// the default full browser to the embedded one set below.
 *				if (!event.required) return;
 *
 *				// Embed the new window
 *				Shell shell = new Shell(display);
 *				shell.setText("New Window");
 *				shell.setLayout(new FillLayout());
 *				Browser browser = new Browser(shell, SWT.NONE);
 *				initialize(display, browser);
 *				event.browser = browser;
 *			}
 *		});
 *		browser.addVisibilityWindowListener(new VisibilityWindowListener() {
 *			public void hide(WindowEvent event) {
 *				Browser browser = (Browser)event.widget;
 *				Shell shell = browser.getShell();
 *				shell.setVisible(false);
 *			}
 *			public void show(WindowEvent event) {
 *				Browser browser = (Browser)event.widget;
 *				Shell shell = browser.getShell();
 *				if (event.location != null) shell.setLocation(event.location);
 *				if (event.size != null) {
 *					Point size = event.size;
 *					shell.setSize(shell.computeSize(size.x, size.y));
 *				}
 *				if (event.addressBar || event.menuBar || event.statusBar || event.toolBar) {
 *					// Create widgets for the address bar, menu bar, status bar and/or tool bar
 *					// leave enough space in the Shell to accommodate a Browser of the size
 *					// given by event.size
 *				}
 *				shell.open();
 *			}
 *		});
 *		browser.addCloseWindowListener(new CloseWindowListener() {
 *			public void close(WindowEvent event) {
 *				Browser browser = (Browser)event.widget;
 *				Shell shell = browser.getShell();
 *				shell.close();
 *			}
 *		});
 *	}
 * 
 *
 * The following notifications are emitted when the user selects a hyperlink that targets a new window
 * or as the result of a javascript that executes window.open.
 *
 * Main Browser
 * 
 *    User selects a link that opens in a new window or javascript requests a new window
 *    OpenWindowListener.open() notified
 *    
 *    		Application creates a new Shell and a second Browser inside that Shell
 *    		Application registers WindowListener's on that second Browser, such as VisibilityWindowListener
 *	    	Application returns the second Browser as the host for the new window content
 *    
 *    
 * 
 *
 * Second Browser
 * 
 *    VisibilityWindowListener.show() notified
 *    
 *    		Application sets navigation tool bar, status bar, menu bar and Shell size
 *    		
Application makes the Shell hosting the second Browser visible
 *    		
User now sees the new window
 *    
 *    
 * 
 *
 * @see CloseWindowListener
 * @see OpenWindowListener
 * @see VisibilityWindowListener
 * @see Sample code and further information
 *
 * @since 3.0
 */
public class WindowEvent extends TypedEvent {

	/**
	 * Specifies whether the platform requires the user to provide a
	 * Browser to handle the new window.
	 *
	 * @since 3.1
	 */
	public boolean required;


	/**
	 * Browser provided by the application.
	 */
	public Browser browser;

	/**
	 * Requested location for the Shell hosting the Browser.
	 * It is null if no location has been requested.
	 */
	public Point location;

	/**
	 * Requested Browser size. The client area of the Shell
	 * hosting the Browser should be large enough to accommodate that size.
	 * It is null if no size has been requested.
	 */
	public Point size;

	/**
	 * Specifies whether the Shell hosting the Browser should
	 * display an address bar.
	 *
	 * @since 3.1
	 */
	public boolean addressBar;

	/**
	 * Specifies whether the Shell hosting the Browser should
	 * display a menu bar.  Note that this is always true on OS X.
	 *
	 * @since 3.1
	 */
	public boolean menuBar;

	/**
	 * Specifies whether the Shell hosting the Browser should
	 * display a status bar.
	 *
	 * @since 3.1
	 */
	public boolean statusBar;

	/**
	 * Specifies whether the Shell hosting the Browser should
	 * display a tool bar.
	 *
	 * @since 3.1
	 */
	public boolean toolBar;

	static final long serialVersionUID = 3617851997387174969L;

/**
 * Constructs a new instance of this class.
 *
 * @param widget the widget that fired the event
 *
 * @since 3.5
 */
public WindowEvent(Widget widget) {
	super(widget);
}

/**
 * Returns a string containing a concise, human-readable
 * description of the receiver.
 *
 * @return a string representation of the event
 */
@Override
public String toString() {
	String string = super.toString ();
	return string.substring (0, string.length() - 1) // remove trailing '}'
		+ " required=" + required
		+ " browser=" + browser
		+ " location=" + location
		+ " size=" + size
		+ " addressBar=" + addressBar
		+ " menuBar=" + menuBar
		+ " statusBar=" + statusBar
		+ " toolBar=" + toolBar
		+ "}";
}
}