examples/org.eclipse.ui.examples.readmetool/Eclipse UI Examples Readme Tool/org/eclipse/ui/examples/readmetool/WindowActionDelegate.java

package org.eclipse.ui.examples.readmetool;

/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */
import org.eclipse.ui.*;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.widgets.Shell;

/**
 * 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;
}
}