dbdesignerdocumentprovider.java

eclipse平台

					.validateEditRule(
							(IFile[]) files.toArray(new IFile[files.size()]));
		}
		return null;
	}

	/**
	 * @generated
	 */
	private ISchedulingRule computeSchedulingRule(IResource toCreateOrModify) {
		if (toCreateOrModify.exists())
			return ResourcesPlugin.getWorkspace().getRuleFactory().modifyRule(
					toCreateOrModify);

		IResource parent = toCreateOrModify;
		do {
			/*
			 * XXX This is a workaround for
			 * https://bugs.eclipse.org/bugs/show_bug.cgi?id=67601
			 * IResourceRuleFactory.createRule should iterate the hierarchy
			 * itself.
			 */
			toCreateOrModify = parent;
			parent = toCreateOrModify.getParent();
		} while (parent != null && !parent.exists());

		return ResourcesPlugin.getWorkspace().getRuleFactory().createRule(
				toCreateOrModify);
	}

	/**
	 * @generated
	 */
	protected void doSynchronize(Object element, IProgressMonitor monitor)
			throws CoreException {
		ResourceSetInfo info = getResourceSetInfo(element);
		if (info != null) {
			for (Iterator it = info.getResourceSet().getResources().iterator(); it
					.hasNext();) {
				Resource nextResource = (Resource) it.next();
				handleElementChanged(info, nextResource, monitor);
			}
			return;
		}
		super.doSynchronize(element, monitor);
	}

	/**
	 * @generated
	 */
	protected void doSaveDocument(IProgressMonitor monitor, Object element,
			IDocument document, boolean overwrite) throws CoreException {
		ResourceSetInfo info = getResourceSetInfo(element);
		if (info != null) {
			if (!overwrite && !info.isSynchronized()) {
				throw new CoreException(
						new Status(
								IStatus.ERROR,
								DbdesignerDiagramEditorPlugin.ID,
								IStatus.OK,
								Messages.DbdesignerDocumentProvider_UnsynchronizedFileSaveError,
								null));
			}
			info.stopResourceListening();
			fireElementStateChanging(element);
			List resources = info.getResourceSet().getResources();
			try {
				monitor.beginTask(
						Messages.DbdesignerDocumentProvider_SaveDiagramTask,
						resources.size() + 1); //"Saving diagram"
				for (Iterator it = resources.iterator(); it.hasNext();) {
					Resource nextResource = (Resource) it.next();
					monitor
							.setTaskName(NLS
									.bind(
											Messages.DbdesignerDocumentProvider_SaveNextResourceTask,
											nextResource.getURI()));
					if (nextResource.isLoaded()
							&& !info.getEditingDomain()
									.isReadOnly(nextResource)) {
						try {
							nextResource.save(DbdesignerDiagramEditorUtil
									.getSaveOptions());
						} catch (IOException e) {
							fireElementStateChangeFailed(element);
							throw new CoreException(new Status(IStatus.ERROR,
									DbdesignerDiagramEditorPlugin.ID,
									EditorStatusCodes.RESOURCE_FAILURE, e
											.getLocalizedMessage(), null));
						}
					}
					monitor.worked(1);
				}
				monitor.done();
			} catch (RuntimeException x) {
				fireElementStateChangeFailed(element);
				throw x;
			} finally {
				info.startResourceListening();
			}
		}
	}

	/**
	 * @generated
	 */
	protected void handleElementChanged(ResourceSetInfo info,
			Resource changedResource, IProgressMonitor monitor) {
		IFile file = WorkspaceSynchronizer.getFile(changedResource);
		if (file != null) {
			try {
				file.refreshLocal(IResource.DEPTH_INFINITE, monitor);
			} catch (CoreException ex) {
				DbdesignerDiagramEditorPlugin
						.getInstance()
						.logError(
								Messages.DbdesignerDocumentProvider_handleElementContentChanged,
								ex);
				// Error message to log was initially taken from org.eclipse.gmf.runtime.diagram.ui.resources.editor.ide.internal.l10n.EditorMessages.FileDocumentProvider_handleElementContentChanged
			}
		}
		changedResource.unload();

		fireElementContentAboutToBeReplaced(info.getEditorInput());
		removeUnchangedElementListeners(info.getEditorInput(), info);
		info.fStatus = null;
		try {
			setDocumentContent(info.fDocument, info.getEditorInput());
		} catch (CoreException e) {
			info.fStatus = e.getStatus();
		}
		if (!info.fCanBeSaved) {
			info.setModificationStamp(computeModificationStamp(info));
		}
		addUnchangedElementListeners(info.getEditorInput(), info);
		fireElementContentReplaced(info.getEditorInput());
	}

	/**
	 * @generated
	 */
	protected void handleElementMoved(IEditorInput input, URI uri) {
		if (input instanceof FileEditorInput) {
			IFile newFile = ResourcesPlugin.getWorkspace().getRoot().getFile(
					new Path(URI.decode(uri.path())).removeFirstSegments(1));
			fireElementMoved(input, newFile == null ? null
					: new FileEditorInput(newFile));
			return;
		}
		// TODO: append suffix to the URI! (use diagram as a parameter)
		fireElementMoved(input, new URIEditorInput(uri));
	}

	/**
	 * @generated
	 */
	public IEditorInput createInputWithEditingDomain(IEditorInput editorInput,
			TransactionalEditingDomain domain) {
		return editorInput;
	}

	/**
	 * @generated
	 */
	public IDiagramDocument getDiagramDocument(Object element) {
		IDocument doc = getDocument(element);
		if (doc instanceof IDiagramDocument) {
			return (IDiagramDocument) doc;
		}
		return null;
	}

	/**
	 * @generated
	 */
	protected IRunnableContext getOperationRunner(IProgressMonitor monitor) {
		return null;
	}

	/**
	 * @generated
	 */
	protected class ResourceSetInfo extends ElementInfo {

		/**
		 * @generated
		 */
		private long myModificationStamp = IResource.NULL_STAMP;

		/**
		 * @generated
		 */
		private WorkspaceSynchronizer mySynchronizer;

		/**
		 * @generated
		 */
		private Collection myUnSynchronizedResources = new ArrayList();

		/**
		 * @generated
		 */
		private IDiagramDocument myDocument;

		/**
		 * @generated
		 */
		private IEditorInput myEditorInput;

		/**
		 * @generated
		 */
		private boolean myUpdateCache = true;

		/**
		 * @generated
		 */
		private boolean myModifiable = false;

		/**
		 * @generated
		 */
		private boolean myReadOnly = true;

		/**
		 * @generated
		 */
		private ResourceSetModificationListener myResourceSetListener;

		/**
		 * @generated
		 */
		public ResourceSetInfo(IDiagramDocument document,
				IEditorInput editorInput) {
			super(document);
			myDocument = document;
			myEditorInput = editorInput;
			startResourceListening();
			myResourceSetListener = new ResourceSetModificationListener(this);
			getResourceSet().eAdapters().add(myResourceSetListener);
		}

		/**
		 * @generated
		 */
		public long getModificationStamp() {
			return myModificationStamp;
		}

		/**
		 * @generated
		 */
		public void setModificationStamp(long modificationStamp) {
			myModificationStamp = modificationStamp;
		}

		/**
		 * @generated
		 */
		public TransactionalEditingDomain getEditingDomain() {
			return myDocument.getEditingDomain();
		}

		/**
		 * @generated
		 */
		public ResourceSet getResourceSet() {
			return getEditingDomain().getResourceSet();
		}

		/**
		 * @generated
		 */
		public IEditorInput getEditorInput() {
			return myEditorInput;
		}

		/**
		 * @generated
		 */
		public void dispose() {
			stopResourceListening();
			getResourceSet().eAdapters().remove(myResourceSetListener);
			for (Iterator it = getResourceSet().getResources().iterator(); it
					.hasNext();) {
				Resource resource = (Resource) it.next();
				resource.unload();
			}
		}

		/**
		 * @generated
		 */
		public boolean isSynchronized() {
			return myUnSynchronizedResources.size() == 0;
		}

		/**
		 * @generated
		 */
		public void setUnSynchronized(Resource resource) {
			myUnSynchronizedResources.add(resource);
		}

		/**
		 * @generated
		 */
		public void setSynchronized(Resource resource) {
			myUnSynchronizedResources.remove(resource);
		}

		/**
		 * @generated
		 */
		public final void stopResourceListening() {
			mySynchronizer.dispose();
			mySynchronizer = null;
		}

		/**
		 * @generated
		 */
		public final void startResourceListening() {
			mySynchronizer = new WorkspaceSynchronizer(getEditingDomain(),
					new SynchronizerDelegate());
		}

		/**
		 * @generated
		 */
		public boolean isUpdateCache() {
			return myUpdateCache;
		}

		/**
		 * @generated
		 */
		public void setUpdateCache(boolean update) {
			myUpdateCache = update;
		}

		/**
		 * @generated
		 */
		public boolean isModifiable() {
			return myModifiable;
		}

		/**
		 * @generated
		 */
		public void setModifiable(boolean modifiable) {
			myModifiable = modifiable;
		}

		/**
		 * @generated
		 */
		public boolean isReadOnly() {
			return myReadOnly;
		}

		/**
		 * @generated
		 */
		public void setReadOnly(boolean readOnly) {
			myReadOnly = readOnly;
		}

		/**
		 * @generated
		 */
		private class SynchronizerDelegate implements
				WorkspaceSynchronizer.Delegate {

			/**
			 * @generated
			 */
			public void dispose() {
			}

			/**
			 * @generated
			 */
			public boolean handleResourceChanged(final Resource resource) {
				synchronized (ResourceSetInfo.this) {
					if (ResourceSetInfo.this.fCanBeSaved) {
						ResourceSetInfo.this.setUnSynchronized(resource);
						return true;
					}
				}
				Display.getDefault().asyncExec(new Runnable() {
					public void run() {
						handleElementChanged(ResourceSetInfo.this, resource,
								null);
					}
				});
				return true;
			}

			/**
			 * @generated
			 */
			public boolean handleResourceDeleted(Resource resource) {
				synchronized (ResourceSetInfo.this) {
					if (ResourceSetInfo.this.fCanBeSaved) {
						ResourceSetInfo.this.setUnSynchronized(resource);
						return true;
					}
				}
				Display.getDefault().asyncExec(new Runnable() {
					public void run() {
						fireElementDeleted(ResourceSetInfo.this
								.getEditorInput());
					}
				});
				return true;
			}

			/**
			 * @generated
			 */
			public boolean handleResourceMoved(Resource resource,
					final URI newURI) {
				synchronized (ResourceSetInfo.this) {
					if (ResourceSetInfo.this.fCanBeSaved) {
						ResourceSetInfo.this.setUnSynchronized(resource);
						return true;
					}
				}
				if (myDocument.getDiagram().eResource() == resource) {
					Display.getDefault().asyncExec(new Runnable() {
						public void run() {
							handleElementMoved(ResourceSetInfo.this
									.getEditorInput(), newURI);
						}
					});
				} else {
					handleResourceDeleted(resource);
				}
				return true;
			}

		}

	}

	/**
	 * @generated
	 */
	private class ResourceSetModificationListener extends EContentAdapter {

		/**
		 * @generated
		 */
		private NotificationFilter myModifiedFilter;

		/**
		 * @generated
		 */
		private ResourceSetInfo myInfo;

		/**
		 * @generated
		 */
		public ResourceSetModificationListener(ResourceSetInfo info) {
			myInfo = info;
			myModifiedFilter = NotificationFilter.createEventTypeFilter(
					Notification.SET).or(
					NotificationFilter
							.createEventTypeFilter(Notification.UNSET)).and(
					NotificationFilter.createFeatureFilter(Resource.class,
							Resource.RESOURCE__IS_MODIFIED));
		}

		/**
		 * @generated
		 */
		public void notifyChanged(Notification notification) {
			if (notification.getNotifier() instanceof ResourceSet) {
				super.notifyChanged(notification);
			}
			if (!notification.isTouch()
					&& myModifiedFilter.matches(notification)) {
				if (notification.getNotifier() instanceof Resource) {
					Resource resource = (Resource) notification.getNotifier();
					if (resource.isLoaded()) {
						boolean modified = false;
						for (Iterator it = myInfo.getResourceSet()
								.getResources().iterator(); it.hasNext()
								&& !modified;) {
							Resource nextResource = (Resource) it.next();
							if (nextResource.isLoaded()) {
								modified = nextResource.isModified();
							}
						}
						boolean dirtyStateChanged = false;
						synchronized (myInfo) {
							if (modified != myInfo.fCanBeSaved) {
								myInfo.fCanBeSaved = modified;
								dirtyStateChanged = true;
							}
							if (!resource.isModified()) {
								myInfo.setSynchronized(resource);
							}
						}
						if (dirtyStateChanged) {
							fireElementDirtyStateChanged(myInfo
									.getEditorInput(), modified);

							if (!modified) {
								myInfo
										.setModificationStamp(computeModificationStamp(myInfo));
							}
						}
					}
				}
			}
		}

	}

}