| /******************************************************************************* |
| * Copyright (c) 2006, 2015 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; |
| |
| import java.util.Arrays; |
| import java.util.Iterator; |
| import java.util.LinkedHashSet; |
| import java.util.Set; |
| |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.jface.viewers.TreePath; |
| import org.eclipse.osgi.util.NLS; |
| |
| import org.eclipse.ui.internal.navigator.extensions.NavigatorContentDescriptor; |
| import org.eclipse.ui.internal.navigator.extensions.NavigatorContentExtension; |
| import org.eclipse.ui.navigator.INavigatorContentDescriptor; |
| import org.eclipse.ui.navigator.INavigatorPipelineService; |
| import org.eclipse.ui.navigator.IPipelinedTreeContentProvider; |
| import org.eclipse.ui.navigator.PipelinedShapeModification; |
| import org.eclipse.ui.navigator.PipelinedViewerUpdate; |
| |
| /** |
| * @since 3.2 |
| * |
| */ |
| public class NavigatorPipelineService implements INavigatorPipelineService { |
| |
| private NavigatorContentService contentService; |
| |
| /** |
| * Create a pipeline assistant for the given content service. |
| * |
| * @param aContentService |
| * The content service that will drive this pipeline assistant. |
| */ |
| public NavigatorPipelineService(NavigatorContentService aContentService) { |
| contentService = aContentService; |
| } |
| |
| @Override |
| public PipelinedShapeModification interceptAdd( |
| PipelinedShapeModification anAddModification) { |
| |
| ContributorTrackingSet trackedSet =(ContributorTrackingSet) anAddModification.getChildren(); |
| |
| Set contentDescriptors = contentService.findDescriptorsByTriggerPoint(anAddModification.getParent(), !NavigatorContentService.CONSIDER_OVERRIDES); |
| |
| |
| for (Iterator descriptorsItr = contentDescriptors.iterator(); descriptorsItr.hasNext();) { |
| INavigatorContentDescriptor descriptor = (INavigatorContentDescriptor) descriptorsItr.next(); |
| pipelineInterceptAdd(anAddModification, trackedSet, descriptor); |
| } |
| return anAddModification; |
| } |
| |
| private void pipelineInterceptAdd(final PipelinedShapeModification anAddModification, |
| final ContributorTrackingSet trackedSet, final INavigatorContentDescriptor descriptor) { |
| if (descriptor.hasOverridingExtensions()) { |
| Set overridingDescriptors = descriptor.getOverriddingExtensions(); |
| for (Iterator overridingDescriptorsItr = overridingDescriptors.iterator(); overridingDescriptorsItr |
| .hasNext();) { |
| INavigatorContentDescriptor overridingDescriptor = (INavigatorContentDescriptor) overridingDescriptorsItr |
| .next(); |
| if (contentService.isVisible(overridingDescriptor.getId()) |
| && contentService.isActive(overridingDescriptor.getId())) { |
| trackedSet.setContributor((NavigatorContentDescriptor) overridingDescriptor, |
| (NavigatorContentDescriptor) descriptor); |
| final NavigatorContentExtension extension = contentService |
| .getExtension(overridingDescriptor); |
| if (extension.internalGetContentProvider().isPipelined()) { |
| SafeRunner.run(new NavigatorSafeRunnable() { |
| @Override |
| public void run() throws Exception { |
| ((IPipelinedTreeContentProvider) extension |
| .internalGetContentProvider()) |
| .interceptAdd(anAddModification); |
| } |
| |
| @Override |
| public void handleException(Throwable e) { |
| NavigatorPlugin.logError(0, NLS.bind( |
| CommonNavigatorMessages.Exception_Invoking_Extension, |
| new Object[] { extension.getDescriptor().getId(), null }), |
| e); |
| } |
| }); |
| } |
| trackedSet.setContributor(null, null); |
| pipelineInterceptAdd(anAddModification, trackedSet, overridingDescriptor); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public PipelinedShapeModification interceptRemove( |
| PipelinedShapeModification aRemoveModification) { |
| |
| ContributorTrackingSet trackedSet =(ContributorTrackingSet) aRemoveModification.getChildren(); |
| |
| Set interestedExtensions = new LinkedHashSet(); |
| for (Iterator iter = trackedSet.iterator(); iter.hasNext();) { |
| Object element = (Object) iter.next(); |
| if(element instanceof TreePath) { |
| interestedExtensions.addAll(contentService.findOverrideableContentExtensionsForPossibleChild(((TreePath)element).getLastSegment())); |
| } else { |
| interestedExtensions = contentService.findOverrideableContentExtensionsForPossibleChild(element); |
| |
| } |
| } |
| for (Iterator overridingExtensionsIter = interestedExtensions.iterator(); overridingExtensionsIter.hasNext();) |
| pipelineInterceptRemove(aRemoveModification, trackedSet, (NavigatorContentExtension) overridingExtensionsIter.next()); |
| return aRemoveModification; |
| } |
| |
| private void pipelineInterceptRemove(final PipelinedShapeModification aRemoveModification, |
| final ContributorTrackingSet trackedSet, |
| final NavigatorContentExtension overrideableExtension) { |
| |
| final Set overridingExtensions = new LinkedHashSet(); |
| overridingExtensions.addAll(Arrays.asList(overrideableExtension |
| .getOverridingExtensions())); |
| |
| for (Iterator extensionsItr = overridingExtensions.iterator(); extensionsItr |
| .hasNext();) { |
| final NavigatorContentExtension overridingExtension = (NavigatorContentExtension) extensionsItr |
| .next(); |
| trackedSet.setContributor((NavigatorContentDescriptor) overridingExtension |
| .getDescriptor(), null); |
| if (overridingExtension.internalGetContentProvider().isPipelined()) { |
| SafeRunner.run(new NavigatorSafeRunnable() { |
| @Override |
| public void run() throws Exception { |
| ((IPipelinedTreeContentProvider) overridingExtension |
| .internalGetContentProvider()).interceptRemove(aRemoveModification); |
| } |
| |
| @Override |
| public void handleException(Throwable e) { |
| NavigatorPlugin.logError(0, NLS.bind( |
| CommonNavigatorMessages.Exception_Invoking_Extension, new Object[] { |
| overridingExtension.getDescriptor().getId(), null }), e); |
| } |
| }); |
| } |
| trackedSet.setContributor(null, null); |
| if (overridingExtension.getDescriptor().hasOverridingExtensions()) |
| pipelineInterceptRemove(aRemoveModification, trackedSet, overridingExtension); |
| } |
| |
| } |
| |
| @Override |
| public boolean interceptRefresh( |
| PipelinedViewerUpdate aRefreshSynchronization) { |
| |
| boolean pipelined = false; |
| Object refreshable = null; |
| Set overrideableExtensions = new LinkedHashSet(); |
| for (Iterator iter = aRefreshSynchronization.getRefreshTargets().iterator(); iter.hasNext();) { |
| refreshable = iter.next(); |
| overrideableExtensions.addAll(contentService.findOverrideableContentExtensionsForPossibleChild(refreshable)); |
| } |
| for (Iterator overrideableExtensionItr = overrideableExtensions.iterator(); overrideableExtensionItr.hasNext();) { |
| pipelined |= pipelineInterceptRefresh((NavigatorContentExtension) overrideableExtensionItr.next(), aRefreshSynchronization, refreshable); |
| } |
| |
| return pipelined; |
| |
| } |
| |
| private boolean pipelineInterceptRefresh(final NavigatorContentExtension overrideableExtension, |
| final PipelinedViewerUpdate aRefreshSynchronization, final Object refreshable) { |
| |
| final boolean[] intercepted = new boolean[1]; |
| |
| final NavigatorContentExtension[] overridingExtensions = overrideableExtension |
| .getOverridingExtensions(); |
| for (final NavigatorContentExtension nceLocal : overridingExtensions) { |
| if (nceLocal.internalGetContentProvider().isPipelined()) { |
| SafeRunner.run(new NavigatorSafeRunnable() { |
| @Override |
| public void run() throws Exception { |
| intercepted[0] |= ((IPipelinedTreeContentProvider) nceLocal |
| .internalGetContentProvider()) |
| .interceptRefresh(aRefreshSynchronization); |
| |
| if (nceLocal.getDescriptor().hasOverridingExtensions()) |
| intercepted[0] |= pipelineInterceptRefresh(nceLocal, |
| aRefreshSynchronization, refreshable); |
| } |
| |
| @Override |
| public void handleException(Throwable e) { |
| NavigatorPlugin.logError(0, NLS.bind( |
| CommonNavigatorMessages.Exception_Invoking_Extension, new Object[] { |
| nceLocal.getDescriptor().getId(), refreshable }), e); |
| } |
| }); |
| } |
| } |
| |
| return intercepted[0]; |
| } |
| |
| @Override |
| public boolean interceptUpdate( |
| PipelinedViewerUpdate anUpdateSynchronization) { |
| |
| boolean pipelined = false; |
| Object refreshable = null; |
| |
| Set overrideableExtensions = new LinkedHashSet(); |
| for (Iterator iter = anUpdateSynchronization.getRefreshTargets().iterator(); iter.hasNext();) { |
| refreshable = iter.next(); |
| overrideableExtensions.addAll(contentService.findOverrideableContentExtensionsForPossibleChild(refreshable)); |
| } |
| for (Iterator overrideableExtensionItr = overrideableExtensions.iterator(); overrideableExtensionItr.hasNext();) { |
| pipelined |= pipelineInterceptUpdate((NavigatorContentExtension) overrideableExtensionItr.next(), anUpdateSynchronization, refreshable); |
| } |
| |
| return pipelined; |
| |
| } |
| |
| private boolean pipelineInterceptUpdate(final NavigatorContentExtension overrideableExtension, |
| final PipelinedViewerUpdate anUpdateSynchronization, final Object refreshable) { |
| |
| final boolean[] intercepted = new boolean[1]; |
| final NavigatorContentExtension[] overridingExtensions = overrideableExtension |
| .getOverridingExtensions(); |
| for (final NavigatorContentExtension nceLocal : overridingExtensions) { |
| if (nceLocal.internalGetContentProvider().isPipelined()) { |
| SafeRunner.run(new NavigatorSafeRunnable() { |
| @Override |
| public void run() throws Exception { |
| intercepted[0] |= ((IPipelinedTreeContentProvider) nceLocal |
| .internalGetContentProvider()) |
| .interceptUpdate(anUpdateSynchronization); |
| |
| if (nceLocal.getDescriptor().hasOverridingExtensions()) |
| intercepted[0] |= pipelineInterceptUpdate(nceLocal, |
| anUpdateSynchronization, refreshable); |
| } |
| |
| @Override |
| public void handleException(Throwable e) { |
| NavigatorPlugin.logError(0, NLS.bind( |
| CommonNavigatorMessages.Exception_Invoking_Extension, new Object[] { |
| nceLocal.getDescriptor().getId(), refreshable }), e); |
| } |
| }); |
| |
| } |
| } |
| |
| return intercepted[0]; |
| } |
| |
| } |