/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.examples.readmetool;

import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;

/**
 * This class shows how <code>IActionDelegate</code> implementations
 * should be used for global action registration for menu 
 * and tool bars. Action proxy object is created in the 
 * desktop based on presentation information in the plugin.xml
 * file. Delegate is not loaded until the first time the user
 * presses the button or selects the menu. Based on the action
 * availability, it is possible that the button will disable
 * instead of executing.
 */
public class WindowActionDelegate implements IWorkbenchWindowActionDelegate {
	private IWorkbenchWindow window;
	private ISelection selection;
/* (non-Javadoc)
 * Method declared on IWorkbenchActionDelegate
 */
public void dispose() {}
/* (non-Javadoc)
 * Method declared on IWorkbenchActionDelegate
 */
public void init(IWorkbenchWindow window) {
	this.window = window;
}
/** 
 * The <code>WindowActionDelegate</code> implementation of this
 * <code>IActionDelegate</code> method 
 * launches a stand-alone dialog that contains a list of sections for
 * the selected readme file in the navigator.
 */
public void run(IAction action) {
	SectionsDialog dialog = new SectionsDialog(window.getShell(), 
		ReadmeModelFactory.getInstance().getSections(selection));
	dialog.open();
}
/** 
 * The <code>WindowActionDelegate</code> implementation of this
 * <code>IActionDelegate</code> method 
 * does nothing - we will let simple rules in the XML
 * config file react to selections.
 */
public void selectionChanged(IAction action, ISelection selection) {
	this.selection = selection;
}
}