| /******************************************************************************* |
| * Copyright (c) 2007, 2017 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.compare.internal; |
| |
| import org.eclipse.compare.CompareConfiguration; |
| import org.eclipse.compare.structuremergeviewer.ICompareInput; |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.jface.util.IPropertyChangeListener; |
| import org.eclipse.jface.util.PropertyChangeEvent; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.swt.widgets.Composite; |
| |
| /** |
| * Class which allows content merge viewer to provide a structure viewer that can be used in the outline |
| * view. |
| */ |
| public abstract class OutlineViewerCreator { |
| |
| /** |
| * Property constant that identifies the input of the outline view. |
| */ |
| public static final String PROP_INPUT = "org.eclipse.compare.OutlineInput"; //$NON-NLS-1$ |
| |
| private ListenerList<IPropertyChangeListener> listeners = new ListenerList<>(ListenerList.IDENTITY); |
| |
| /** |
| * Method called by the editor to create a structure viewer for the current content merge viewer. |
| * @param oldViewer the current viewer that is being used to show the structure |
| * @param input the input |
| * @param parent the parent composite |
| * @param configuration the compare configuration |
| * @return a viewer to be placed in the outline viewer or <code>null</code> |
| */ |
| public abstract Viewer findStructureViewer(Viewer oldViewer, ICompareInput input, |
| Composite parent, CompareConfiguration configuration); |
| |
| public abstract boolean hasViewerFor(Object input); |
| |
| public void addPropertyChangeListener(IPropertyChangeListener listener) { |
| listeners.add(listener); |
| } |
| |
| public void removePropertyChangeListener(IPropertyChangeListener listener) { |
| listeners.remove(listener); |
| } |
| |
| public void fireInputChange(Object oldInput, Object newInput) { |
| final PropertyChangeEvent event = new PropertyChangeEvent(this, PROP_INPUT, oldInput, newInput); |
| for (final IPropertyChangeListener listener : listeners) { |
| SafeRunner.run(new ISafeRunnable() { |
| @Override |
| public void run() throws Exception { |
| listener.propertyChange(event); |
| } |
| @Override |
| public void handleException(Throwable exception) { |
| // Logged by SafeRunner |
| } |
| }); |
| } |
| } |
| |
| public abstract Object getInput(); |
| |
| } |