ca.uvic.chisel.javasketch.ui.internal.presentation.commands.JavaRevealActivationHandler.java Source code

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Here is the source code for ca.uvic.chisel.javasketch.ui.internal.presentation.commands.JavaRevealActivationHandler.java

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/*******************************************************************************
 * Copyright (c) 2009 the CHISEL group and contributors.
 * 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:
 *     the CHISEL group - initial API and implementation
 *******************************************************************************/
package ca.uvic.chisel.javasketch.ui.internal.presentation.commands;

import java.util.Iterator;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.IType;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.handlers.HandlerUtil;

import ca.uvic.chisel.javasketch.IProgramSketch;
import ca.uvic.chisel.javasketch.SketchPlugin;
import ca.uvic.chisel.javasketch.data.model.ITrace;
import ca.uvic.chisel.javasketch.data.model.ITraceModel;
import ca.uvic.chisel.javasketch.internal.JavaSearchUtils;

/**
 * Reveals an activation for a Java selection
 * @author Del Myers
 *
 */
public class JavaRevealActivationHandler extends RevealActivationHandler {

    /* (non-Javadoc)
     * @see ca.uvic.chisel.javasketch.ui.internal.presentation.commands.RevealActivationHandler#getTraceModelForSelection(org.eclipse.jface.viewers.IStructuredSelection)
     */
    @Override
    protected ITraceModel getTraceModelForSelection(ISelection selection, ExecutionEvent event) {
        //get the trace to look in from the event
        String traceid = event.getParameter(TRACE_PARAMETER);
        if (traceid == null) {
            return null;
        }
        if (!(selection instanceof IStructuredSelection))
            return null;
        IStructuredSelection ss = (IStructuredSelection) selection;
        IProgramSketch sketch = SketchPlugin.getDefault().getSketch(traceid);
        if (sketch == null) {
            //use the active sketch
            sketch = SketchPlugin.getDefault().getActiveSketch();
        }
        if (sketch != null && !sketch.isAnalysing() && sketch.isConnected()) {
            ITrace trace = sketch.getTraceData();
            IJavaElement element = getJEForSelection(ss);
            if (element instanceof IType) {
                return JavaSearchUtils.findSimilarType(trace, (IType) element);
            } else if (element instanceof IMethod) {
                return JavaSearchUtils.findSimilarMethod(trace, (IMethod) element);
            }
        }
        return null;
    }

    /* (non-Javadoc)
     * @see ca.uvic.chisel.javasketch.ui.internal.presentation.commands.RevealActivationHandler#getTraceModel(org.eclipse.core.commands.ExecutionEvent)
     */
    @Override
    protected ITraceModel getTraceModel(ExecutionEvent event) {
        return getTraceModelForSelection(HandlerUtil.getCurrentSelection(event), event);
    }

    private IJavaElement getJEForSelection(IStructuredSelection ss) {
        for (Iterator<?> it = ss.iterator(); it.hasNext();) {
            Object o = it.next();
            if (o instanceof IAdaptable) {
                return (IJavaElement) ((IAdaptable) o).getAdapter(IJavaElement.class);
            } else if (o != null) {
                Object element = Platform.getAdapterManager().getAdapter(o, IJavaElement.class);
                if (element instanceof IJavaElement) {
                    return (IJavaElement) element;
                }
            }
        }
        return null;
    }
}