DeployableUnitXMLSubmenu.java

/**
 *   Copyright 2005 Open Cloud Ltd.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */

package org.mobicents.eclipslee.servicecreation.popup.actions;

import org.eclipse.core.resources.IFile;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MenuAdapter;
import org.eclipse.swt.events.MenuEvent;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.mobicents.eclipslee.servicecreation.ServiceCreationPlugin;

/**
 * @author cath
 */
public class DeployableUnitXMLSubmenu implements IObjectActionDelegate, IMenuCreator {

	public DeployableUnitXMLSubmenu() {
		super();
	}

	public void run(IAction action) {
	}
	
	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
	}

	public void dispose() {	
	}
	
	public void selectionChanged(IAction action, ISelection selection) {

		if (selection instanceof IStructuredSelection) {
			
			fFillMenu = true;
			if (action != null) {
				if (fDelegateAction != action) {
					fDelegateAction = action;
					fDelegateAction.setMenuCreator(this);
				}
				
				this.selection = selection;
				action.setEnabled(true);
				return;				
			}
			return;		
		}
		action.setEnabled(false);	
	}
	
	public Menu getMenu(Control control) { return null; } // NOP
	
	public Menu getMenu(Menu parent) {
		Menu menu = new Menu(parent);
		menu.addMenuListener(new MenuAdapter() {
			public void menuShown(MenuEvent e) {
				if (fFillMenu) {
					Menu m = (Menu) e.widget;
					MenuItem items[] = m.getItems();
					for (int i= 0; i < items.length; i++)
						items[i].dispose();
					fillMenu(m);
					fFillMenu = false;					
				}
			}		
		});
		
		return menu;
	}
	
	private void fillMenu(Menu menu) {
		createMenus(menu);
	}
	
	private void createMenus(Menu parent) {
		
		if (selection == null && selection.isEmpty()) {
			return;
		}

		if (!(selection instanceof IStructuredSelection)) {
			return;			
		}
		
		IStructuredSelection ssel = (IStructuredSelection) selection;
		if (ssel.size() > 1) {
			return;
		}
		
		// Get the first (and only) item in the selection.
		Object obj = ssel.getFirstElement();
		
		if (obj instanceof IFile) {
			try {				
				MenuItem item = new MenuItem(parent, SWT.NONE);
				item.setText("Services...");
				item.addSelectionListener(new ServiceSelectionListener());
				
				item = new MenuItem(parent, SWT.NONE);
				item.setText("Jars...");
				item.addSelectionListener(new JarSelectionListener());
				
				item = new MenuItem(parent, SWT.SEPARATOR);					
				
				item = new MenuItem(parent, SWT.NONE);
				item.setText("Delete");
				item.addSelectionListener(new DeleteSelectionListener());
				
			} catch (Exception e) {
				ServiceCreationPlugin.log("Exception caught creating menu: " + e.getMessage());
			}
			
		}
	
	}
	
	private class ServiceSelectionListener extends SelectionAdapter {
		public void widgetSelected(SelectionEvent e) {			
			EditDeployableUnitServiceAction action = new EditDeployableUnitServiceAction();
			action.selectionChanged(null, selection);
			action.run(null);			
		}
	}
	
	private class JarSelectionListener extends SelectionAdapter {
		public void widgetSelected(SelectionEvent e) {
			EditDeployableUnitJarAction action = new EditDeployableUnitJarAction();
			action.selectionChanged(null, selection);
			action.run(null);			
		}
	}

	private class DeleteSelectionListener extends SelectionAdapter {
		public void widgetSelected(SelectionEvent e) {
			DeleteDeployableUnitAction action = new DeleteDeployableUnitAction();
			action.selectionChanged(null, selection);
			action.run(null);			
		}	
	}
		
	private IAction fDelegateAction;
	private ISelection selection;
	private boolean fFillMenu;
}