| /******************************************************************************* |
| * Copyright (c) 2006, 2011 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.team.ui.history; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.jface.util.IPropertyChangeListener; |
| import org.eclipse.team.internal.ui.PropertyChangeHandler; |
| import org.eclipse.ui.part.Page; |
| |
| /** |
| * Abstract HistoryPage class that keeps track of the history page site. |
| * <p> |
| * Clients may subclass this class. |
| * @see IHistoryPage |
| * @since 3.2 |
| */ |
| public abstract class HistoryPage extends Page implements IHistoryPage, IAdaptable { |
| |
| private IHistoryPageSite site; |
| private Object input; |
| private IHistoryView historyView; |
| private PropertyChangeHandler fChangeHandler; |
| |
| @Override |
| public void setSite(IHistoryPageSite site) { |
| this.site = site; |
| } |
| |
| @Override |
| public IHistoryPageSite getHistoryPageSite() { |
| return site; |
| } |
| |
| |
| @Override |
| public Object getInput() { |
| return input; |
| } |
| |
| @Override |
| public boolean setInput(Object object) { |
| this.input = object; |
| return inputSet(); |
| } |
| |
| /** |
| * Called by HistoryPage after {@link #setInput(Object)}. Clients can |
| * gain access to the input by using {@link #getInput()}. |
| * |
| * @return <code>true</code> if the page was able to display the contents, <code>false</code> otherwise |
| */ |
| public abstract boolean inputSet(); |
| |
| |
| public void setHistoryView(IHistoryView historyView) { |
| this.historyView = historyView; |
| } |
| |
| @Override |
| public IHistoryView getHistoryView() { |
| if (historyView != null) |
| return historyView; |
| |
| return null; |
| } |
| |
| @Override |
| public synchronized void addPropertyChangeListener(IPropertyChangeListener listener) { |
| if (fChangeHandler == null) { |
| fChangeHandler = new PropertyChangeHandler(); |
| } |
| fChangeHandler.addPropertyChangeListener(listener); |
| } |
| |
| @Override |
| public void removePropertyChangeListener(IPropertyChangeListener listener) { |
| if (fChangeHandler != null) { |
| fChangeHandler.removePropertyChangeListener(listener); |
| } |
| } |
| |
| /** |
| * Notify all listeners that the given property has changed. |
| * |
| * @param source the object on which a property has changed |
| * @param property identifier of the property that has changed |
| * @param oldValue the old value of the property, or <code>null</code> |
| * @param newValue the new value of the property, or <code>null</code> |
| * @since 3.3 |
| */ |
| protected void firePropertyChange(Object source, String property, Object oldValue, Object newValue) { |
| if (fChangeHandler == null) { |
| return; |
| } |
| fChangeHandler.firePropertyChange(source, property, oldValue, newValue); |
| } |
| } |