org.eclipse.mylyn.team.ui/src/org/eclipse/mylyn/team/ui/AbstractActiveChangeSetProvider.java

/*******************************************************************************
 * Copyright (c) 2004, 2008 Tasktop Technologies 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:
 *     Gunnar Wagenkecht - initial API and implementation
 *     Tasktop Technologies - improvements
 *******************************************************************************/

package org.eclipse.mylyn.team.ui;

import org.eclipse.mylyn.internal.team.ui.ContextChangeSet;
import org.eclipse.mylyn.tasks.core.ITask;
import org.eclipse.team.internal.core.subscribers.ActiveChangeSetManager;

/**
 * Integrates an Eclipse Team repository with Mylyn.
 * 
 * @author Gunnar Wagenknecht
 * @author Mik Kersten
 * @since 2.0
 */
public abstract class AbstractActiveChangeSetProvider {

	/**
	 * Return the change set collector that manages the active change set for the participant associated with this
	 * capability. A <code>null</code> is returned if active change sets are not supported. The default is to return
	 * <code>null</code>. This method must be overridden by subclasses that support active change sets.
	 * 
	 * Note that {@link ActiveChangeSetManager} is an internal class of <code>org.eclipse.team.core</code>, but is
	 * required for change set support (bug 116084). The current implementation will only work if a subtype of
	 * {@link ActiveChangeSetManager} is returned. In the future, if a change set API becomes available, an additional
	 * extensibility mechanism will be provided.
	 * 
	 * @return the change set collector that manages the active change set for the participant associated with this
	 *         capability or <code>null</code> if active change sets are not supported.
	 * @since 3.0
	 */
	public ActiveChangeSetManager getActiveChangeSetManager() {
		return null;
	}

	/**
	 * Override if a custom change set class is needed, e.g. in order to support custom action and model mappings as is
	 * the case with the CVS change set implementation used by org.eclipse.mylyn.team.cvs.
	 * 
	 * @since 3.0
	 */
	public IContextChangeSet createChangeSet(ITask task) {
		return new ContextChangeSet(task, getActiveChangeSetManager());
	}

}