| /******************************************************************************* |
| * Copyright (c) 2000, 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 Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.team.internal.ccvs.core.resources; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.*; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.QualifiedName; |
| import org.eclipse.team.core.RepositoryProvider; |
| import org.eclipse.team.internal.ccvs.core.*; |
| import org.eclipse.team.internal.ccvs.core.util.ResourceStateChangeListeners; |
| |
| /** |
| * This class performs several functions related to determining the modified |
| * status of files under CVS control. First, it listens for change delta's for |
| * files and brodcasts them to all listeners. It also registers as a save |
| * participant so that deltas generated before the plugin are loaded are not |
| * missed. Secondly, it listens for CVS resource state change events and uses |
| * these to properly mark files and folders as modified. |
| */ |
| public class FileModificationManager implements IResourceChangeListener { |
| |
| private static final QualifiedName UPDATE_TIMESTAMP = new QualifiedName(CVSProviderPlugin.ID, "update-timestamp"); //$NON-NLS-1$ |
| |
| /* private */Set modifiedResources = new HashSet(); |
| |
| // consider the following changes types and ignore the others (e.g. marker and description changes are ignored) |
| protected int INTERESTING_CHANGES = IResourceDelta.CONTENT | |
| IResourceDelta.MOVED_FROM | |
| IResourceDelta.MOVED_TO | |
| IResourceDelta.OPEN | |
| IResourceDelta.REPLACED | |
| IResourceDelta.TYPE; |
| |
| /** |
| * Listen for file modifications and fire modification state changes |
| * |
| * @see org.eclipse.core.resources.IResourceChangeListener#resourceChanged(org.eclipse.core.resources.IResourceChangeEvent) |
| */ |
| public void resourceChanged(IResourceChangeEvent event) { |
| try { |
| event.getDelta().accept(new IResourceDeltaVisitor() { |
| public boolean visit(IResourceDelta delta) { |
| IResource resource = delta.getResource(); |
| |
| if (resource.getType()==IResource.PROJECT) { |
| IProject project = (IProject)resource; |
| if (!project.isAccessible()) { |
| return false; |
| } |
| if ((delta.getFlags() & IResourceDelta.OPEN) != 0) { |
| return false; |
| } |
| if (RepositoryProvider.getProvider(project, CVSProviderPlugin.getTypeId()) == null) { |
| return false; |
| } |
| } |
| |
| if (resource.getType()==IResource.FILE && delta.getKind() == IResourceDelta.CHANGED && resource.exists()) { |
| int flags = delta.getFlags(); |
| if((flags & INTERESTING_CHANGES) != 0) { |
| resourceChanged(resource, false); |
| } |
| } else if (delta.getKind() == IResourceDelta.ADDED) { |
| try { |
| EclipseSynchronizer.getInstance().handleAdded(resource); |
| } catch (CVSException e) { |
| CVSProviderPlugin.log(e); |
| } |
| resourceChanged(resource, true); |
| } else if (delta.getKind() == IResourceDelta.REMOVED) { |
| try { |
| EclipseSynchronizer.getInstance().handleDeleted(resource); |
| } catch (CVSException e) { |
| CVSProviderPlugin.log(e); |
| } |
| modifiedResources.add(resource); |
| } |
| |
| return true; |
| } |
| }); |
| if (!modifiedResources.isEmpty()) { |
| ResourceStateChangeListeners.getListener().resourceModified( |
| (IResource[])modifiedResources.toArray(new IResource[modifiedResources.size()])); |
| modifiedResources.clear(); |
| } |
| } catch (CoreException e) { |
| CVSProviderPlugin.log(e); |
| } |
| |
| } |
| |
| /** |
| * Method updated flags the objetc as having been modfied by the updated |
| * handler. This flag is read during the resource delta to determine whether |
| * the modification made the file dirty or not. |
| * |
| * @param mFile |
| */ |
| public void updated(ICVSFile mFile) { |
| try { |
| if (mFile instanceof EclipseFile) { |
| IFile file = (IFile)mFile.getIResource(); |
| file.setSessionProperty(UPDATE_TIMESTAMP, Long.valueOf(file.getModificationStamp())); |
| } |
| } catch (CoreException e) { |
| CVSProviderPlugin.log(e); |
| } |
| } |
| |
| /* |
| * Handle added and changed resources by signaling the change to the corresponding |
| * CVS resource and recording the change for broadcast to interested listeners. |
| */ |
| /* private */void resourceChanged(IResource resource, boolean addition) { |
| if (isCleanUpdate(resource)) return; |
| try { |
| EclipseResource cvsResource = (EclipseResource)CVSWorkspaceRoot.getCVSResourceFor(resource); |
| if (!cvsResource.isIgnored()) { |
| cvsResource.handleModification(addition); |
| modifiedResources.add(resource); |
| } |
| // see bug 170743 |
| // ignored .cvsignore should always be clean and do not affect the path |
| if(cvsResource.getName().equals(".cvsignore") && cvsResource.isIgnored()){ //$NON-NLS-1$ |
| EclipseSynchronizer.getInstance().setModified((EclipseFile) cvsResource, ICVSFile.CLEAN); |
| modifiedResources.add(resource); |
| } |
| } catch (CVSException e) { |
| // Log the exception and continue |
| CVSProviderPlugin.log(e); |
| } |
| } |
| |
| /** |
| * If the file was the result of a clean update, the cached timestamp will |
| * be removed. |
| * |
| * @param resource |
| * @return boolean |
| */ |
| private boolean isCleanUpdate(IResource resource) { |
| if(resource.getType() != IResource.FILE) return false; |
| long modStamp = resource.getModificationStamp(); |
| Long whenWeWrote; |
| try { |
| whenWeWrote = (Long)resource.getSessionProperty(UPDATE_TIMESTAMP); |
| resource.setSessionProperty(UPDATE_TIMESTAMP, null); |
| } catch(CoreException e) { |
| CVSProviderPlugin.log(e); |
| whenWeWrote = null; |
| } |
| return (whenWeWrote!=null && whenWeWrote.longValue() == modStamp); |
| } |
| } |
| |