| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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.jdt.internal.corext.refactoring.changes; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.core.runtime.jobs.ISchedulingRule; |
| |
| import org.eclipse.core.resources.IWorkspaceRunnable; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| |
| import org.eclipse.ltk.core.refactoring.Change; |
| import org.eclipse.ltk.core.refactoring.CompositeChange; |
| import org.eclipse.ltk.core.refactoring.RefactoringStatus; |
| |
| import org.eclipse.jdt.core.JavaCore; |
| |
| import org.eclipse.jdt.internal.corext.refactoring.RefactoringCoreMessages; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| |
| //import org.eclipse.jdt.internal.corext.refactoring.RefactoringCoreMessages; |
| |
| public class DynamicValidationStateChange extends CompositeChange implements WorkspaceTracker.Listener { |
| |
| private boolean fListenerRegistered= false; |
| private RefactoringStatus fValidationState= null; |
| private long fTimeStamp; |
| private ISchedulingRule fSchedulingRule; |
| |
| // 30 minutes |
| private static final long LIFE_TIME= 30 * 60 * 1000; |
| |
| public DynamicValidationStateChange(Change change) { |
| super(change.getName()); |
| add(change); |
| markAsSynthetic(); |
| fSchedulingRule= ResourcesPlugin.getWorkspace().getRoot(); |
| } |
| |
| public DynamicValidationStateChange(String name) { |
| super(name); |
| markAsSynthetic(); |
| fSchedulingRule= ResourcesPlugin.getWorkspace().getRoot(); |
| } |
| |
| public DynamicValidationStateChange(String name, Change[] changes) { |
| super(name, changes); |
| markAsSynthetic(); |
| fSchedulingRule= ResourcesPlugin.getWorkspace().getRoot(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void initializeValidationData(IProgressMonitor pm) { |
| super.initializeValidationData(pm); |
| WorkspaceTracker.INSTANCE.addListener(this); |
| fListenerRegistered= true; |
| fTimeStamp= System.currentTimeMillis(); |
| } |
| |
| public void dispose() { |
| if (fListenerRegistered) { |
| WorkspaceTracker.INSTANCE.removeListener(this); |
| fListenerRegistered= false; |
| } |
| super.dispose(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException { |
| if (fValidationState == null) { |
| return super.isValid(pm); |
| } |
| return fValidationState; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Change perform(IProgressMonitor pm) throws CoreException { |
| final Change[] result= new Change[1]; |
| IWorkspaceRunnable runnable= new IWorkspaceRunnable() { |
| public void run(IProgressMonitor monitor) throws CoreException { |
| result[0]= DynamicValidationStateChange.super.perform(monitor); |
| } |
| }; |
| JavaCore.run(runnable, fSchedulingRule, pm); |
| return result[0]; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| protected Change createUndoChange(Change[] childUndos) { |
| DynamicValidationStateChange result= new DynamicValidationStateChange(getName()); |
| for (int i= 0; i < childUndos.length; i++) { |
| result.add(childUndos[i]); |
| } |
| return result; |
| } |
| |
| public void workspaceChanged() { |
| long currentTime= System.currentTimeMillis(); |
| if (currentTime - fTimeStamp < LIFE_TIME) |
| return; |
| fValidationState= RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.DynamicValidationStateChange_workspace_changed); |
| // remove listener from workspace tracker |
| WorkspaceTracker.INSTANCE.removeListener(this); |
| fListenerRegistered= false; |
| // clear up the children to not hang onto too much memory |
| Change[] children= clear(); |
| for (int i= 0; i < children.length; i++) { |
| final Change change= children[i]; |
| SafeRunner.run(new ISafeRunnable() { |
| public void run() throws Exception { |
| change.dispose(); |
| } |
| public void handleException(Throwable exception) { |
| JavaPlugin.log(exception); |
| } |
| }); |
| } |
| } |
| |
| public void setSchedulingRule(ISchedulingRule schedulingRule) { |
| fSchedulingRule= schedulingRule; |
| } |
| |
| public ISchedulingRule getSchedulingRule() { |
| return fSchedulingRule; |
| } |
| } |