net.sourceforge.metrics.ui.AbortMetrics.java Source code

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Here is the source code for net.sourceforge.metrics.ui.AbortMetrics.java

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/*
 * Copyright (c) 2003 Frank Sauer. All rights reserved.
 *
 * Licenced under CPL 1.0 (Common Public License Version 1.0).
 * The licence is available at http://www.eclipse.org/legal/cpl-v10.html.
 *
 *
 * DISCLAIMER OF WARRANTIES AND LIABILITY:
 *
 * THE SOFTWARE IS PROVIDED "AS IS".  THE AUTHOR MAKES  NO REPRESENTATIONS OR WARRANTIES,
 * EITHER EXPRESS OR IMPLIED.  TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL THE
 * AUTHOR  BE LIABLE FOR ANY DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUE,  PROFITS
 * OR DATA, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL  OR PUNITIVE DAMAGES,
 * HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF  LIABILITY, ARISING OUT OF OR RELATED TO
 * ANY FURNISHING, PRACTICING, MODIFYING OR ANY USE OF THE SOFTWARE, EVEN IF THE AUTHOR
 * HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 *
 * $Id: AbortMetrics.java,v 1.2 2004/04/30 20:21:17 sauerf Exp $
 */

package net.sourceforge.metrics.ui;

import net.sourceforge.metrics.builder.MetricsBuilder;
import net.sourceforge.metrics.core.Constants;
import net.sourceforge.metrics.core.Log;

import org.eclipse.core.resources.IProject;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IActionDelegate;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;

/**
 * Action for the checked menu item in the IJavaproject popup. Checks/Unchecks based on the presence of the metrics nature and selection adds/removes the nature.
 * 
 * @author Frank Sauer
 */
public class AbortMetrics implements IObjectActionDelegate, Constants {

    private IProject project;

    /**
     * Constructor for Action1.
     */
    public AbortMetrics() {
        super();
    }

    /**
     * @see IObjectActionDelegate#setActivePart(IAction, IWorkbenchPart)
     */
    public void setActivePart(IAction action, IWorkbenchPart targetPart) {
    }

    /**
     * @see IActionDelegate#run(IAction)
     */
    public void run(IAction action) {
        IJavaProject p = JavaCore.create(project);
        // abort any ongoing or pending calculations for this project
        if (p != null) {
            MetricsBuilder.abort(p.getHandleIdentifier());
        }
    }

    /**
     * @see IActionDelegate#selectionChanged(IAction, ISelection)
     */
    public void selectionChanged(IAction action, ISelection selection) {
        if ((!selection.isEmpty()) && (selection instanceof IStructuredSelection)) {
            try {
                // Openable op =
                // (Openable)((IStructuredSelection)selection).getFirstElement();
                IJavaElement elem = (IJavaElement) ((IStructuredSelection) selection).getFirstElement();
                if (elem != null) {
                    project = (IProject) elem.getUnderlyingResource();
                    if (project.hasNature(PLUGIN_ID + ".nature")) {
                        IJavaProject p = JavaCore.create(project);
                        if (p != null) {
                            action.setEnabled(MetricsBuilder.isBuilding(p.getHandleIdentifier()));
                        } else {
                            action.setEnabled(false);
                        }
                    } else {
                        action.setEnabled(false);
                    }
                }
            } catch (Throwable e) {
                Log.logError("AbortMetrics: error getting project.", e);
                project = null;
            }
        }
    }

}