| /******************************************************************************* |
| * Copyright (c) 2016 EclipseSource Muenchen GmbH 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: |
| * Stefan Dirix - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.emf.compare.ide.ui.internal.contentmergeviewer.tree.provider; |
| |
| import org.eclipse.emf.compare.Comparison; |
| import org.eclipse.emf.compare.rcp.ui.EMFCompareRCPUIPlugin; |
| import org.eclipse.emf.compare.rcp.ui.mergeviewer.item.provider.IMergeViewerItemContentProvider; |
| import org.eclipse.emf.compare.rcp.ui.mergeviewer.item.provider.IMergeViewerItemProvider; |
| import org.eclipse.emf.compare.rcp.ui.mergeviewer.item.provider.IMergeViewerItemProviderConfiguration; |
| import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| |
| /** |
| * This implementation of {@link ITreeContentProvider} delegates to the {@link IMergeViewerItemProvider}s and |
| * {@link IMergeViewerItemContentProvider}s registered via the content merge viewer customization extension |
| * point. If no fitting provider is registered, the calls will be delegated to the AdapterFactory. |
| * |
| * @author Stefan Dirix <sdirix@eclipsesource.com> |
| */ |
| public class DelegatingTreeMergeViewerItemContentProvider extends AdapterFactoryContentProvider { |
| |
| private IMergeViewerItemProviderConfiguration configuration; |
| |
| private Comparison comparison; |
| |
| /** |
| * Constructor. |
| * |
| * @param comparison |
| * the {@link Comparison}. |
| * @param configuration |
| * the {@link IMergeViewerItemProviderConfiguration}. |
| */ |
| public DelegatingTreeMergeViewerItemContentProvider(Comparison comparison, |
| IMergeViewerItemProviderConfiguration configuration) { |
| super(configuration.getAdapterFactory()); |
| this.comparison = comparison; |
| this.configuration = configuration; |
| } |
| |
| /** |
| * Get the {@link IMergeViewerItemProviderConfiguration}. |
| * |
| * @return the {@link IMergeViewerItemProviderConfiguration}. |
| */ |
| protected IMergeViewerItemProviderConfiguration getConfiguration() { |
| return configuration; |
| } |
| |
| /** |
| * Get the {@link Comparison}. |
| * |
| * @return the {@link Comparison}. |
| */ |
| protected Comparison getComparison() { |
| return comparison; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object[] getElements(Object object) { |
| IMergeViewerItemProvider mergeViewerItemProvider = getMergeViewerItemProvider(object); |
| if (mergeViewerItemProvider != null) { |
| return mergeViewerItemProvider.getMergeViewerItems(object, getConfiguration()).toArray(); |
| } |
| return super.getElements(object); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean hasChildren(Object object) { |
| IMergeViewerItemContentProvider contentProvider = getContentProvider(object); |
| if (contentProvider != null) { |
| return contentProvider.hasChildren(object, getConfiguration()); |
| } |
| return super.hasChildren(object); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object[] getChildren(Object object) { |
| IMergeViewerItemContentProvider contentProvider = getContentProvider(object); |
| if (contentProvider != null) { |
| return contentProvider.getChildren(object, getConfiguration()); |
| } |
| return super.getChildren(object); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object getParent(Object object) { |
| IMergeViewerItemContentProvider contentProvider = getContentProvider(object); |
| if (contentProvider != null) { |
| return contentProvider.getParent(object, getConfiguration()); |
| } |
| return super.getParent(object); |
| } |
| |
| /** |
| * Determines the {@link IMergeViewerItemProvider} for the given {@link Object}. |
| * |
| * @param object |
| * the {@link Object} for which an {@link IMergeViewerItemProvider} is to be determined. |
| * @return the determined {@link IMergeViewerItemProvider}. |
| */ |
| protected IMergeViewerItemProvider getMergeViewerItemProvider(Object object) { |
| IMergeViewerItemProvider mergeViewerItemProvider = EMFCompareRCPUIPlugin.getDefault() |
| .getContentMergeViewerCustomizationRegistry() |
| .getBestFittingMergeViewerItemProvider(getComparison(), object); |
| return mergeViewerItemProvider; |
| } |
| |
| /** |
| * Determines the {@link IMergeViewerItemContentProvider} for the given {@link Object}. |
| * |
| * @param object |
| * the {@link Object} for which an {@link IMergeViewerItemContentProvider} is to be determined. |
| * @return the determined {@link IMergeViewerItemContentProvider}. |
| */ |
| protected IMergeViewerItemContentProvider getContentProvider(Object object) { |
| IMergeViewerItemContentProvider mergeViewerItemContentProvider = EMFCompareRCPUIPlugin.getDefault() |
| .getContentMergeViewerCustomizationRegistry() |
| .getBestFittingMergeViewerItemContentProvider(getComparison(), object); |
| return mergeViewerItemContentProvider; |
| } |
| |
| } |