bundles/org.eclipse.ui.ide/src/org/eclipse/ui/ide/undo/DeleteMarkersOperation.java

/*******************************************************************************
 * Copyright (c) 2006, 2007 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.ide.undo;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.ui.internal.ide.undo.UndoMessages;

/**
 * A DeleteMarkersOperation represents an undoable operation for deleting one or
 * more markers in the workspace. Clients may call the public API from a
 * background thread.
 * 
 * This class is intended to be instantiated and used by clients. It is not
 * intended to be subclassed by clients.
 * 
 * @since 3.3
 * 
 */
public class DeleteMarkersOperation extends AbstractMarkersOperation {

	/**
	 * Create an undoable operation that can delete the specified markers.
	 * 
	 * @param markers
	 *            the markers to be deleted
	 * @param name
	 *            the name used to describe the operation that deletes the
	 *            markers
	 */
	public DeleteMarkersOperation(IMarker[] markers, String name) {
		super(markers, null, null, name);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * Map execution to marker deletion.
	 * 
	 * @see org.eclipse.ui.ide.undo.AbstractWorkspaceOperation#doExecute(org.eclipse.core.runtime.IProgressMonitor,
	 *      org.eclipse.core.runtime.IAdaptable)
	 */
	protected void doExecute(IProgressMonitor monitor, IAdaptable info)
			throws CoreException {
		if (monitor == null) {
			monitor = new NullProgressMonitor();
		}
		monitor.beginTask("", 100); //$NON-NLS-1$
		monitor.setTaskName(UndoMessages.MarkerOperation_DeleteProgress);
		deleteMarkers(100, monitor);
		monitor.done();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * Map undo to marker creation.
	 * 
	 * @see org.eclipse.ui.ide.undo.AbstractWorkspaceOperation#doUndo(org.eclipse.core.runtime.IProgressMonitor,
	 *      org.eclipse.core.runtime.IAdaptable)
	 */
	protected void doUndo(IProgressMonitor monitor, IAdaptable info)
			throws CoreException {
		if (monitor == null) {
			monitor = new NullProgressMonitor();
		}
		monitor.beginTask("", 100); //$NON-NLS-1$
		monitor.setTaskName(UndoMessages.MarkerOperation_CreateProgress);
		createMarkers(100, monitor);
		monitor.done();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * Map the undo status to marker creation status.
	 * 
	 * @see org.eclipse.ui.ide.undo.AbstractMarkersOperation#getBasicUndoStatus()
	 */
	protected IStatus getBasicUndoStatus() {
		return getMarkerCreationStatus();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * Map the redo status to marker deletion status.
	 * 
	 * @see org.eclipse.ui.ide.undo.AbstractMarkersOperation#getBasicRedoStatus()
	 */
	protected IStatus getBasicRedoStatus() {
		return getMarkerDeletionStatus();
	}
}