| /******************************************************************************* |
| * Copyright (c) 2003, 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.ui.internal.navigator.extensions; |
| |
| import java.util.ArrayList; |
| import java.util.Set; |
| |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.ITreePathContentProvider; |
| import org.eclipse.jface.viewers.TreePath; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.ui.IMemento; |
| import org.eclipse.ui.internal.navigator.NavigatorContentService; |
| import org.eclipse.ui.internal.navigator.NavigatorPlugin; |
| import org.eclipse.ui.navigator.ICommonContentExtensionSite; |
| import org.eclipse.ui.navigator.ICommonContentProvider; |
| import org.eclipse.ui.navigator.IMementoAware; |
| import org.eclipse.ui.navigator.IPipelinedTreeContentProvider; |
| import org.eclipse.ui.navigator.PipelinedShapeModification; |
| import org.eclipse.ui.navigator.PipelinedViewerUpdate; |
| |
| /** |
| * @since 3.2 |
| */ |
| public class SafeDelegateTreeContentProvider implements |
| IPipelinedTreeContentProvider, ITreePathContentProvider { |
| |
| private static final TreePath[] NO_PATHS = new TreePath[0]; |
| |
| private final ITreeContentProvider contentProvider; |
| |
| private NavigatorContentService contentService; |
| |
| private NavigatorContentDescriptor descriptor; |
| |
| private Viewer viewer; |
| |
| SafeDelegateTreeContentProvider(ITreeContentProvider aContentProvider, |
| NavigatorContentDescriptor aDescriptor, |
| NavigatorContentService theContentService) { |
| super(); |
| contentProvider = aContentProvider; |
| contentService = theContentService; |
| descriptor = aDescriptor; |
| } |
| |
| /** |
| * |
| */ |
| public void dispose() { |
| SafeRunner.run(new ISafeRunnable() { |
| |
| public void handleException(Throwable exception) { |
| String msg = exception.getMessage() != null ? exception.getMessage() : exception.toString() ; |
| NavigatorPlugin.logError(0, msg, exception); |
| |
| } |
| |
| public void run() throws Exception { |
| contentProvider.dispose(); |
| } |
| |
| }); |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public boolean equals(Object anObject) { |
| return contentProvider.equals(anObject); |
| } |
| |
| public Object[] getChildren(Object aParentElement) { |
| if (aParentElement instanceof TreePath) { |
| TreePath tp = (TreePath) aParentElement; |
| return getChildren(tp); |
| } |
| Object[] children = contentProvider.getChildren(aParentElement); |
| contentService.rememberContribution(descriptor, children); |
| return children; |
| } |
| |
| public Object[] getElements(Object anInputElement) { |
| Object[] elements = contentProvider.getElements(anInputElement); |
| contentService.rememberContribution(descriptor, elements); |
| return elements; |
| } |
| |
| public Object getParent(Object anElement) { |
| return contentProvider.getParent(anElement); |
| } |
| |
| public boolean hasChildren(Object anElement) { |
| return contentProvider.hasChildren(anElement); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#hashCode() |
| */ |
| public int hashCode() { |
| return contentProvider.hashCode(); |
| } |
| |
| public void inputChanged(final Viewer aViewer, final Object anOldInput, final Object aNewInput) { |
| viewer = aViewer; |
| |
| SafeRunner.run(new ISafeRunnable() { |
| |
| public void handleException(Throwable exception) { |
| String msg = exception.getMessage() != null ? exception.getMessage() : exception.toString() ; |
| NavigatorPlugin.logError(0, msg, exception); |
| |
| } |
| |
| public void run() throws Exception { |
| contentProvider.inputChanged(aViewer, anOldInput, aNewInput); |
| } |
| |
| }); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see java.lang.Object#toString() |
| */ |
| public String toString() { |
| return contentProvider.toString(); |
| } |
| |
| /** |
| * |
| * @return The real content provider. |
| */ |
| public ITreeContentProvider getDelegateContentProvider() { |
| return contentProvider; |
| } |
| |
| public void restoreState(IMemento aMemento) { |
| if (contentProvider != null && contentProvider instanceof IMementoAware) { |
| ((IMementoAware) contentProvider).restoreState(aMemento); |
| } |
| |
| } |
| |
| public void saveState(IMemento aMemento) { |
| if (contentProvider != null && contentProvider instanceof IMementoAware) { |
| ((IMementoAware) contentProvider).saveState(aMemento); |
| } |
| |
| } |
| |
| public void init(ICommonContentExtensionSite aConfig) { |
| if (contentProvider instanceof ICommonContentProvider) { |
| ((ICommonContentProvider) contentProvider).init(aConfig); |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#getPipelinedChildren(java.lang.Object, |
| * java.util.Set) |
| */ |
| public void getPipelinedChildren(Object aParent, Set theCurrentChildren) { |
| if (contentProvider instanceof IPipelinedTreeContentProvider) { |
| ((IPipelinedTreeContentProvider) contentProvider) |
| .getPipelinedChildren(aParent, theCurrentChildren); |
| } |
| |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#getPipelinedElements(java.lang.Object, |
| * java.util.Set) |
| */ |
| public void getPipelinedElements(Object anInput, Set theCurrentElements) { |
| if (contentProvider instanceof IPipelinedTreeContentProvider) { |
| ((IPipelinedTreeContentProvider) contentProvider) |
| .getPipelinedElements(anInput, theCurrentElements); |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#getPipelinedParent(java.lang.Object, |
| * java.lang.Object) |
| */ |
| public Object getPipelinedParent(Object anObject, Object aSuggestedParent) { |
| if (contentProvider instanceof IPipelinedTreeContentProvider) { |
| return ((IPipelinedTreeContentProvider) contentProvider) |
| .getPipelinedParent(anObject, aSuggestedParent); |
| } |
| return anObject; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptAdd(org.eclipse.ui.navigator.PipelinedShapeModification) |
| */ |
| public PipelinedShapeModification interceptAdd( |
| PipelinedShapeModification anAddModification) { |
| if (contentProvider instanceof IPipelinedTreeContentProvider) { |
| return ((IPipelinedTreeContentProvider) contentProvider) |
| .interceptAdd(anAddModification); |
| } |
| return anAddModification; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptRemove(org.eclipse.ui.navigator.PipelinedShapeModification) |
| */ |
| public PipelinedShapeModification interceptRemove( |
| PipelinedShapeModification aRemoveModification) { |
| if (contentProvider instanceof IPipelinedTreeContentProvider) { |
| return ((IPipelinedTreeContentProvider) contentProvider) |
| .interceptRemove(aRemoveModification); |
| } |
| return aRemoveModification; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptRefresh(org.eclipse.ui.navigator.PipelinedViewerUpdate) |
| */ |
| public boolean interceptRefresh( |
| PipelinedViewerUpdate aRefreshSynchronization) { |
| if (contentProvider instanceof IPipelinedTreeContentProvider) { |
| return ((IPipelinedTreeContentProvider) contentProvider) |
| .interceptRefresh(aRefreshSynchronization); |
| } |
| return false; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptUpdate(org.eclipse.ui.navigator.PipelinedViewerUpdate) |
| */ |
| public boolean interceptUpdate( |
| PipelinedViewerUpdate anUpdateSynchronization) { |
| if (contentProvider instanceof IPipelinedTreeContentProvider) { |
| return ((IPipelinedTreeContentProvider) contentProvider) |
| .interceptUpdate(anUpdateSynchronization); |
| } |
| return false; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ITreePathContentProvider#getChildren(org.eclipse.jface.viewers.TreePath) |
| */ |
| public Object[] getChildren(TreePath parentPath) { |
| if (contentProvider instanceof ITreePathContentProvider) { |
| ITreePathContentProvider tpcp = (ITreePathContentProvider) contentProvider; |
| Object[] children = tpcp.getChildren(parentPath); |
| contentService.rememberContribution(descriptor, children); |
| return children; |
| } |
| return getChildren(parentPath.getLastSegment()); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ITreePathContentProvider#hasChildren(org.eclipse.jface.viewers.TreePath) |
| */ |
| public boolean hasChildren(TreePath path) { |
| if (contentProvider instanceof ITreePathContentProvider) { |
| ITreePathContentProvider tpcp = (ITreePathContentProvider) contentProvider; |
| return tpcp.hasChildren(path); |
| } |
| return hasChildren(path.getLastSegment()); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.ITreePathContentProvider#getParents(java.lang.Object) |
| */ |
| public TreePath[] getParents(Object element) { |
| if (contentProvider instanceof ITreePathContentProvider) { |
| ITreePathContentProvider tpcp = (ITreePathContentProvider) contentProvider; |
| return tpcp.getParents(element); |
| } |
| ArrayList segments = new ArrayList(); |
| Object parent = element; |
| do { |
| parent = contentProvider.getParent(parent); |
| if (parent != null && parent != viewer.getInput()) |
| segments.add(0, parent); |
| } while (parent != null && parent != viewer.getInput()); |
| if (!segments.isEmpty()) { |
| // Loop backwards over the array to create the path. |
| return new TreePath[] { new TreePath(segments.toArray()) }; |
| } |
| return NO_PATHS; |
| } |
| |
| } |