| /****************************************************************************** |
| * Copyright (c) 2004, 2005 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 Corporation - initial API and implementation |
| ****************************************************************************/ |
| |
| package org.eclipse.gmf.runtime.common.ui.action.actions.global; |
| |
| 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.viewers.IStructuredSelection; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.IWorkbenchPartSite; |
| |
| import org.eclipse.gmf.runtime.common.ui.services.action.global.AbstractGlobalActionHandler; |
| import org.eclipse.gmf.runtime.common.ui.services.action.global.IGlobalActionContext; |
| |
| /** |
| * Global action handler that works with the resources in the context selection. |
| * |
| * @author ldamus |
| */ |
| public abstract class ResourceGlobalActionHandler extends AbstractGlobalActionHandler { |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.gmf.runtime.common.ui.services.action.global.IGlobalActionHandler#canHandle(org.eclipse.gmf.runtime.common.ui.services.action.global.IGlobalActionContext) |
| */ |
| public boolean canHandle(IGlobalActionContext cntxt) { |
| IStructuredSelection selection = |
| (IStructuredSelection) cntxt.getSelection(); |
| return getResourceSelection((IStructuredSelection)cntxt.getSelection()).size() == selection.size(); |
| } |
| |
| /** |
| * Gets a structured selection containing all of the IResources in the |
| * context selection. Selected elements may either by IResources or may |
| * adapt to IResource. |
| * |
| * @param selection the context selection for which <code>IStructuredSelection</code> will be retrieved |
| * @return the selection of file resources |
| */ |
| protected IStructuredSelection getResourceSelection(IStructuredSelection selection) { |
| |
| List result = new ArrayList(); |
| |
| for (Iterator i = selection.iterator(); i.hasNext();) { |
| Object nextSelected = i.next(); |
| |
| if (nextSelected instanceof IResource) { |
| result.add(nextSelected); |
| |
| } else if (nextSelected instanceof IAdaptable) { |
| IAdaptable adaptable = (IAdaptable) nextSelected; |
| IResource resource = |
| (IResource) adaptable.getAdapter(IResource.class); |
| if (resource != null) { |
| result.add(resource); |
| } |
| } |
| } |
| return new StructuredSelection(result); |
| } |
| |
| /** |
| * Gets the shell from the global action context. |
| * |
| * @param part the <code>IWorkbenchPart</code> for which a <code>Shell</code> will be retrieved |
| * @return the shell |
| */ |
| protected Shell getShell(IWorkbenchPart part) { |
| if (part != null) { |
| IWorkbenchPartSite site = part.getSite(); |
| if (site != null) { |
| return site.getShell(); |
| } |
| } |
| return null; |
| } |
| } |