DeleteHandler.java

/*******************************************************************************
 * Copyright (c) 2007, 2011 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.internal.views.markers;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.operations.IUndoableOperation;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.WorkspaceJob;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.ui.ide.undo.DeleteMarkersOperation;
import org.eclipse.ui.ide.undo.WorkspaceUndoUtil;
import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
import org.eclipse.ui.views.markers.MarkerSupportView;
import org.eclipse.ui.views.markers.MarkerViewHandler;
import org.eclipse.ui.views.markers.internal.MarkerMessages;

/**
 * DeleteHandler is the handler for the deletion of a marker.
 * 
 * @since 3.4
 * 
 */
public class DeleteHandler extends MarkerViewHandler {

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
	 */
	public Object execute(ExecutionEvent event) {

		final MarkerSupportView view = getView(event);
		if (view == null)
			return this;

		final IMarker[] selected = getSelectedMarkers(event);
		
		// Verify.
		MessageDialog dialog = new MessageDialog(
				view.getSite().getShell(),
				MarkerMessages.deleteActionConfirmTitle,
				null, // icon
				MarkerMessages.deleteActionConfirmMessage,
				MessageDialog.WARNING,
				new String[] { IDialogConstants.YES_LABEL,
						IDialogConstants.NO_LABEL }, 0);

		if (dialog.open() != 0) {
			return view;
		}
		
		WorkspaceJob deleteJob= new WorkspaceJob(IDEWorkbenchMessages.MarkerDeleteHandler_JobTitle) { //See Bug#250807
			public IStatus runInWorkspace(IProgressMonitor monitor) {
				monitor.beginTask(IDEWorkbenchMessages.MarkerDeleteHandler_JobMessageLabel, 10 * selected.length);
				try {
					IUndoableOperation op= new DeleteMarkersOperation(selected, view.getDeleteOperationName(selected));
					op.addContext(view.getUndoContext());
					execute(op, MarkerMessages.deleteMarkers_errorMessage, monitor, WorkspaceUndoUtil.getUIInfoAdapter(view.getSite().getShell()));
				} finally {
					monitor.done();
				}
				return Status.OK_STATUS;
			}
		};
		deleteJob.setUser(true);
		deleteJob.schedule();

		return this;
	}
}