| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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.team.examples.pessimistic.ui; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.*; |
| |
| import org.eclipse.core.resources.*; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.dialogs.ProgressMonitorDialog; |
| import org.eclipse.jface.operation.IRunnableWithProgress; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.team.core.RepositoryProvider; |
| import org.eclipse.team.examples.pessimistic.PessimisticFilesystemProvider; |
| import org.eclipse.team.examples.pessimistic.PessimisticFilesystemProviderPlugin; |
| import org.eclipse.ui.IObjectActionDelegate; |
| import org.eclipse.ui.IWorkbenchPart; |
| |
| |
| /** |
| * Abstract base action implementation for all pessimistic provider actions. |
| * Provides convenience methods an abstractions. |
| */ |
| public abstract class PessimisticProviderAction |
| implements IObjectActionDelegate { |
| |
| /* |
| * The current selection. |
| */ |
| protected ISelection fSelection; |
| /* |
| * The current shell. |
| */ |
| protected Shell fShell; |
| |
| /* |
| * @see org.eclipse.ui.IActionDelegate#selectionChanged(IAction, ISelection) |
| */ |
| public void selectionChanged(IAction action, ISelection selection) { |
| fSelection = selection; |
| |
| boolean enabled= action.isEnabled(); |
| if (enabled != checkEnablement()) { |
| action.setEnabled(!enabled); |
| } |
| } |
| |
| /* |
| * @see org.eclipse.ui.IObjectActionDelegate#setActivePart(IAction, IWorkbenchPart) |
| */ |
| public void setActivePart(IAction action, IWorkbenchPart part) { |
| fShell= part.getSite().getShell(); |
| } |
| |
| /** |
| * Answers <code>true</code> if this action should be enabled |
| * for the given <code>resource</code>. |
| */ |
| protected abstract boolean shouldEnableFor(IResource resource); |
| |
| /* |
| * Checks to see if this action should be enabled. |
| */ |
| protected boolean checkEnablement() { |
| IResource[] resources= getSelectedResources(); |
| if (resources == null || resources.length == 0) { |
| return false; |
| } else { |
| boolean enabled= false; |
| for(int i= 0; !enabled && i < resources.length; i++) { |
| if (shouldEnableFor(resources[i])) { |
| enabled= true; |
| } |
| } |
| return enabled; |
| } |
| } |
| |
| /** |
| * Convenience method to get an array of resources from the selection. |
| */ |
| protected IResource[] getSelectedResources() { |
| ArrayList resources = null; |
| if (!fSelection.isEmpty()) { |
| resources = new ArrayList(); |
| Iterator elements = ((IStructuredSelection) fSelection).iterator(); |
| while (elements.hasNext()) { |
| Object next = elements.next(); |
| if (next instanceof IResource) { |
| resources.add(next); |
| continue; |
| } |
| if (next instanceof IAdaptable) { |
| IAdaptable a = (IAdaptable) next; |
| Object adapter = a.getAdapter(IResource.class); |
| if (adapter instanceof IResource) { |
| resources.add(adapter); |
| continue; |
| } |
| } |
| } |
| } |
| if (resources != null && !resources.isEmpty()) { |
| IResource[] result = new IResource[resources.size()]; |
| resources.toArray(result); |
| return result; |
| } |
| return new IResource[0]; |
| } |
| |
| /** |
| * Convenience method which answers <code>true</code> if the |
| * resource is controlled by a <code>PessimisticFilesystemProvider</code>. |
| */ |
| protected boolean isControlled(IResource resource) { |
| PessimisticFilesystemProvider provider= getProvider(resource); |
| if (provider == null) |
| return false; |
| return provider.isControlled(resource); |
| } |
| |
| /** |
| * Convenience method which answers <code>true</code> if and only if the |
| * resource is controlled by a <code>PessimisticFilesystemProvider</code> |
| * and is checked out. |
| */ |
| protected boolean isCheckedOut(IResource resource) { |
| PessimisticFilesystemProvider provider= getProvider(resource); |
| if (provider == null) |
| return false; |
| return provider.isCheckedout(resource); |
| } |
| |
| /** |
| * Convenience method which answers <code>true</code> if and only if the |
| * resource is controlled by a <code>PessimisticFilesystemProvider</code> |
| * and the resource is ignored. |
| */ |
| protected boolean isIgnored(IResource resource) { |
| PessimisticFilesystemProvider provider= getProvider(resource); |
| if (provider == null) |
| return false; |
| return provider.isIgnored(resource); |
| } |
| |
| /** |
| * Convenience method which answers the <code>PessimisticFilesystemProvider</code> |
| * for the given <code>resource</code> or <code>null</code> if the |
| * <code>resource</code> is not associated with a <code>PessimisticFilesystemProvider</code>. |
| */ |
| protected PessimisticFilesystemProvider getProvider(IResource resource) { |
| if (resource == null) { |
| return null; |
| } |
| IProject project= resource.getProject(); |
| if (project == null) { |
| return null; |
| } |
| return (PessimisticFilesystemProvider)RepositoryProvider.getProvider(project, PessimisticFilesystemProviderPlugin.NATURE_ID); |
| } |
| |
| /** |
| * Convenience method which walks a resource tree and collects the |
| * resources that this action would enable for. |
| */ |
| protected void recursivelyAdd(IResource resource, Set resources) { |
| if (isControlled(resource) && !isIgnored(resource)) { |
| if (shouldEnableFor(resource)) { |
| resources.add(resource); |
| } |
| |
| if (resource instanceof IContainer) { |
| IContainer container = (IContainer) resource; |
| IResource[] members= null; |
| try { |
| members = container.members(); |
| } catch (CoreException e) { |
| PessimisticFilesystemProviderPlugin.getInstance().logError(e, "Exception traversing members"); |
| } |
| if (members != null) { |
| for (int i = 0; i < members.length; i++) { |
| recursivelyAdd(members[i], resources); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Convenience method which sorts the given <code>resources</code> |
| * into a map of IProject -> Set of IResource objects. |
| */ |
| protected Map sortByProject(Set resources) { |
| Map byProject= new HashMap(); |
| if (resources != null) { |
| for (Iterator i= resources.iterator(); i.hasNext();) { |
| IResource resource= (IResource) i.next(); |
| IProject project= resource.getProject(); |
| Set set= (Set)byProject.get(project); |
| if (set == null) { |
| set= new HashSet(1); |
| byProject.put(project, set); |
| } |
| set.add(resource); |
| } |
| } |
| return byProject; |
| } |
| |
| /** |
| * Convenience method for displaying runnable progress |
| * with a <code>ProgressMonitorDialog</code>. |
| */ |
| protected void runWithProgressDialog(IRunnableWithProgress runnable) { |
| try { |
| new ProgressMonitorDialog(fShell).run(true, false, runnable); |
| } catch (InvocationTargetException e) { |
| PessimisticFilesystemProviderPlugin.getInstance().logError(e, "Problems running action " + this); |
| } catch (InterruptedException e) { |
| PessimisticFilesystemProviderPlugin.getInstance().logError(e, "Problems running action " + this); |
| } |
| } |
| } |