org.eclipse.objectteams.otdt.internal.ui.callinmarkers.CallinMarkerRemover.java Source code

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Here is the source code for org.eclipse.objectteams.otdt.internal.ui.callinmarkers.CallinMarkerRemover.java

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/**********************************************************************
 * This file is part of "Object Teams Development Tooling"-Software
 * 
 * Copyright 2004, 2008 Fraunhofer Gesellschaft, Munich, Germany,
 * for its Fraunhofer Institute for Computer Architecture and Software
 * Technology (FIRST), Berlin, Germany and Technical University Berlin,
 * Germany.
 * 
 * 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
 * $Id: CallinMarkerRemover.java 23435 2010-02-04 00:14:38Z stephan $
 * 
 * Please visit http://www.eclipse.org/objectteams for updates and contact.
 * 
 * Contributors:
 * Fraunhofer FIRST - Initial API and implementation
 * Technical University Berlin - Initial API and implementation
 **********************************************************************/
package org.eclipse.objectteams.otdt.internal.ui.callinmarkers;

import org.eclipse.core.internal.resources.ResourceException;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IMember;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.objectteams.otdt.ui.OTDTUIPlugin;

/**
 * @author gis
 */
public class CallinMarkerRemover {
    public static void removeCallinMarker(IMember member, IResource resource) {
        // we need to pass the resource, as the method might already be removed and hence would
        // not be able to give us a resource.
        if (resource.exists()) {
            try {
                IMarker marker;
                if (member.getElementType() == IJavaElement.METHOD) {
                    marker = getCallinMarker(member, CallinMarker.CALLIN_ID, resource);
                    if (marker != null)
                        marker.delete();
                }
                // method or field:
                marker = getCallinMarker(member, CallinMarker.CALLOUT_ID, resource);
                if (marker != null)
                    marker.delete();
            } catch (ResourceException ex) {
                // tree might be locked for modifications
                // FIXME(SH): handle this case, currently we just ignore this situation
            } catch (CoreException ex) {
                OTDTUIPlugin.logException("Problems removing callin marker", ex); //$NON-NLS-1$
            }
        }
    }

    /**
     * Finds the marker attached to the given method.
     * Note: may return null if nothing found.
     */
    private static IMarker getCallinMarker(IMember baseElement, String markerKind, IResource resource)
            throws JavaModelException, CoreException {
        IMarker[] markers = resource.findMarkers(markerKind, true, IResource.DEPTH_INFINITE);

        String methodId = baseElement.getHandleIdentifier();

        for (int i = 0; i < markers.length; i++) {
            if (methodId.equals(markers[i].getAttribute(CallinMarker.ATTR_BASE_ELEMENT, null)))
                return markers[i];
        }
        return null;
    }
}