EXTLibraryExtendedActionBarContributor.java

/**
 * Copyright (c) 2005-2007 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 - Initial API and implementation
 */
package org.eclipse.emf.examples.extlibrary.actions;

import java.util.ArrayList;
import java.util.Collection;

import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.ActionFactory;

import org.eclipse.emf.examples.extlibrary.Library;
import org.eclipse.emf.examples.extlibrary.presentation.EXTLibraryActionBarContributor;

/**
 * Extension to the generated action bar contributor to handle creation of multi-rooted resources.
 */
public class EXTLibraryExtendedActionBarContributor extends EXTLibraryActionBarContributor {

	/**
	 * Constructor
	 */
	public EXTLibraryExtendedActionBarContributor() {
		super();
	}

	/*
	 * @see
	 * org.eclipse.emf.examples.library.presentation.EXTLibraryActionBarContributor#generateCreateChildActions
	 * (java.util.Collection, org.eclipse.jface.viewers.ISelection)
	 */
	@Override
	protected java.util.Collection<IAction> generateCreateChildActions(Collection<?> descriptors,
			ISelection selection) {
		Collection<IAction> actions = new ArrayList<IAction>(
				super.generateCreateChildActions(descriptors, selection));
		if (selection instanceof IStructuredSelection && ((IStructuredSelection)selection).size() == 1) {
			Object object = ((IStructuredSelection)selection).getFirstElement();
			if (object instanceof Resource) {
				actions.add(generateResourceAction(((Resource)object)));
			}
		}

		return actions;
	}

	/*
	 * @see org.eclipse.emf.examples.extlibrary.presentation.EXTLibraryActionBarContributor#
	 * generateCreateSiblingActions(java.util.Collection, org.eclipse.jface.viewers.ISelection)
	 */
	@Override
	protected Collection<IAction> generateCreateSiblingActions(Collection<?> descriptors,
			ISelection selection) {
		Collection<IAction> actions = new ArrayList<IAction>(
				super.generateCreateSiblingActions(descriptors, selection));
		if (selection instanceof IStructuredSelection && ((IStructuredSelection)selection).size() == 1) {
			Object object = ((IStructuredSelection)selection).getFirstElement();
			if (object instanceof Library) {
				actions.add(generateResourceAction(((Library)object).eResource()));
			}
		}

		return actions;
	}

	/**
	 * Generates a library action for a given resource
	 * 
	 * @param resource
	 *            the containing resource
	 * @return the action
	 */
	protected Action generateResourceAction(Resource resource) {
		return new CreateLibraryAction(activeEditorPart, new StructuredSelection(resource));
	}

	/*
	 * @see org.eclipse.ui.part.EditorActionBarContributor#init(org.eclipse.ui.IActionBars)
	 */
	@Override
	public void init(IActionBars actionBars) {
		super.init(actionBars);

		ISharedImages sharedImages = PlatformUI.getWorkbench().getSharedImages();
		this.deleteAction = new ExtendedDeleteAction();
		this.deleteAction.setImageDescriptor(sharedImages.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE));
		actionBars.setGlobalActionHandler(ActionFactory.DELETE.getId(), this.deleteAction);

		actionBars.updateActionBars();
	}
}