/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.ui.views.markers.internal;

import java.util.Iterator;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.actions.SelectionProviderAction;

public class ActionMarkCompleted extends SelectionProviderAction {

	/**
	 * @param provider
	 * @param text
	 */
	public ActionMarkCompleted(ISelectionProvider provider) {
		super(provider, Messages.getString("markCompletedAction.title")); //$NON-NLS-1$
		setEnabled(false);
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.jface.action.Action#run()
	 */
	public void run() {
		try {
			ResourcesPlugin.getWorkspace().run(new IWorkspaceRunnable() {
				public void run(IProgressMonitor monitor) {
					for (Iterator iterator = getStructuredSelection().iterator(); iterator.hasNext();) {
						Object obj = iterator.next();
						if (obj instanceof IMarker) {
							IMarker marker = (IMarker) obj;
							try {
								marker.setAttribute(IMarker.DONE, true);
							}
							catch (CoreException e) {
							}
						}
					}
				}
			}, null);
		}
		catch (CoreException e) {
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.ui.actions.SelectionProviderAction#selectionChanged(org.eclipse.jface.viewers.IStructuredSelection)
	 */
	public void selectionChanged(IStructuredSelection selection) {
		setEnabled(false);
		if (selection == null || selection.isEmpty()) {
			return;
		}
		for (Iterator iterator = selection.iterator(); iterator.hasNext();) {
			Object obj = iterator.next();
			if (!(obj instanceof IMarker)) {
				return;
			}
			IMarker marker = (IMarker) obj;
			if (!marker.getAttribute(IMarker.USER_EDITABLE, true)) {
				return;
			}
			if (marker.getAttribute(IMarker.DONE, false)) {
				return;
			}
		}
		setEnabled(true);
	}
}