eu.geclipse.traceview.internal.CauseEffectAction.java Source code

Introduction

Here is the source code for eu.geclipse.traceview.internal.CauseEffectAction.java

Source

/*****************************************************************************
 * Copyright (c) 2006, 2008 g-Eclipse Consortium
 * 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
 *
 * Initial development of the original code was made for the
 * g-Eclipse project founded by European Union
 * project number: FP6-IST-034327  http://www.geclipse.eu/
 *
 * Contributors:
 *    Christof Klausecker GUP, JKU - initial API and implementation
 *****************************************************************************/

package eu.geclipse.traceview.internal;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IActionDelegate;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;

import eu.geclipse.traceview.ITrace;
import eu.geclipse.traceview.ITraceView;
import eu.geclipse.traceview.IVectorEvent;

/**
 * Action to activate the cause effect marker
 */
public class CauseEffectAction extends Action implements IActionDelegate {

    private Object selectedObj;

    public void run(final IAction action) {
        boolean equal = true;
        IVectorEvent event = (IVectorEvent) this.selectedObj;
        ITrace trace = event.getProcess().getTrace();
        IVectorEvent causeEvent = (IVectorEvent) trace.getUserData(CauseEffectMarker.MARKER_ID);
        for (int i = 0; i < event.getVectorClock().length; i++) {
            if (causeEvent == null || event.getVectorClock()[i] != causeEvent.getVectorClock()[i]) {
                equal = false;
                continue;
            }
        }
        IVectorEvent newCauseEvent;
        if (!equal)
            newCauseEvent = (IVectorEvent) this.selectedObj;
        else
            newCauseEvent = null;
        trace.setUserData(CauseEffectMarker.MARKER_ID, newCauseEvent);
        Display.getDefault().asyncExec(new Runnable() {

            public void run() {
                try {
                    ITraceView traceView = (ITraceView) PlatformUI.getWorkbench().getActiveWorkbenchWindow()
                            .getActivePage().showView("eu.geclipse.traceview.views.TraceView"); //$NON-NLS-1$
                    traceView.redraw();
                } catch (PartInitException exception) {
                    Activator.logException(exception);
                }
            }
        });
    }

    public void selectionChanged(final IAction action, final ISelection selection) {
        if (selection instanceof StructuredSelection) {
            StructuredSelection structuredSelection = (StructuredSelection) selection;
            this.selectedObj = structuredSelection.getFirstElement();
        }
    }
}