bundles/org.eclipse.team.ui/src/org/eclipse/team/internal/ui/synchronize/actions/RefactorActionGroup.java

/*******************************************************************************
 * 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.team.internal.ui.synchronize.actions;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.team.internal.ui.Policy;
import org.eclipse.team.internal.ui.synchronize.views.SyncSetContentProvider;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.IKeyBindingService;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.ActionGroup;
import org.eclipse.ui.actions.DeleteResourceAction;
import org.eclipse.ui.actions.MoveResourceAction;
import org.eclipse.ui.actions.RenameResourceAction;
import org.eclipse.ui.actions.TextActionHandler;

/**
 * This action group is modeled after the class of the same name in 
 * the org.eclipse.ui.workbench plugin. We couldn't reuse that class
 * because of a hard dependency on the navigator.
 */
public class RefactorActionGroup extends ActionGroup {

	private DeleteResourceAction deleteAction;
	private MoveResourceAction moveAction;
	private RenameResourceAction renameAction;
	private TextActionHandler textActionHandler;
	private IWorkbenchPart part;

	public RefactorActionGroup(IWorkbenchPart part) {
		this.part = part;
		makeActions();
	}

	public void fillContextMenu(IMenuManager parentMenu) {
		IStructuredSelection selection = getSelection();

		boolean anyResourceSelected =
			!selection.isEmpty()
				&& allResourcesAreOfType(
					selection,
					IResource.PROJECT | IResource.FOLDER | IResource.FILE);

		MenuManager menu = new MenuManager(Policy.bind("RefactorActionGroup.0")); //$NON-NLS-1$
		IStructuredSelection convertedSelection = convertSelection(selection);
		
		if (anyResourceSelected) {
			deleteAction.selectionChanged(convertedSelection);
			menu.add(deleteAction);
			moveAction.selectionChanged(convertedSelection);
			menu.add(moveAction);
			renameAction.selectionChanged(convertedSelection);
			menu.add(renameAction);
		}
		parentMenu.add(menu);
	}

	private IStructuredSelection convertSelection(IStructuredSelection selection) {
		List resources = new ArrayList();
		Iterator it = selection.iterator();
		while(it.hasNext()) {
			IResource resource = SyncSetContentProvider.getResource(it.next());
			if(resource != null) {
				resources.add(resource);
			}
		}
		return new StructuredSelection(resources);
	}

	public void fillActionBars(IActionBars actionBars) {
		textActionHandler = new TextActionHandler(actionBars); // hooks handlers
		textActionHandler.setDeleteAction(deleteAction);
		renameAction.setTextActionHandler(textActionHandler);		
	}

	protected void makeActions() {
		// Get the key binding service for registering actions with commands. 
		final IWorkbenchPartSite site = part.getSite();
		final IKeyBindingService keyBindingService = site.getKeyBindingService();
		
		Shell shell = site.getShell();
		ISharedImages images = PlatformUI.getWorkbench().getSharedImages();
		
		moveAction = new MoveResourceAction(shell);
		renameAction = new RenameResourceAction(shell);
		
		deleteAction = new DeleteResourceAction(shell);
		deleteAction.setDisabledImageDescriptor(images.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE_DISABLED));
		deleteAction.setImageDescriptor(images.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE));		
		deleteAction.setHoverImageDescriptor(images.getImageDescriptor(ISharedImages.IMG_TOOL_DELETE_HOVER));
		/* NOTE: This is defined in "plugin.xml" in "org.eclipse.ui".  It is
		 * only publicly declared in code in IWorkbenchActionDefinitionIds in
		 * "org.eclipse.ui.workbench.texteditor".
		 */
		deleteAction.setActionDefinitionId("org.eclipse.ui.edit.delete");  //$NON-NLS-1$
		keyBindingService.registerAction(deleteAction);
	}

	public void updateActionBars() {
		IStructuredSelection selection = getSelection();
		deleteAction.selectionChanged(selection);
		moveAction.selectionChanged(selection);
		renameAction.selectionChanged(selection);
	}

	private IStructuredSelection getSelection() {
		return (IStructuredSelection)part.getSite().getPage().getSelection();
	}

	private boolean allResourcesAreOfType(IStructuredSelection selection, int resourceMask) {
		Iterator resources = selection.iterator();
		while (resources.hasNext()) {
			Object next = resources.next();
			IResource resource = null;
			if (next instanceof IResource) {
				resource = (IResource)next;
			} else if (next instanceof IAdaptable) {
				IAdaptable adaptable = (IAdaptable)next;
				resource = (IResource)adaptable.getAdapter(IResource.class);
			}
			if(resource == null) {
				resource = SyncSetContentProvider.getResource(next);
			}
			if (resource == null || (resource.getType() & resourceMask) == 0) {
				return false;
			}
		}
		return true;
	}
}