ca.uvic.chisel.javasketch.ui.internal.views.OpenIThreadCommandHandler.java Source code

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Here is the source code for ca.uvic.chisel.javasketch.ui.internal.views.OpenIThreadCommandHandler.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:
 *     Del Myers - initial API and implementation
 *******************************************************************************/
package ca.uvic.chisel.javasketch.ui.internal.views;

import java.util.Iterator;
import java.util.Map;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.commands.IElementUpdater;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.menus.UIElement;

import ca.uvic.chisel.javasketch.SketchPlugin;
import ca.uvic.chisel.javasketch.data.model.IThread;
import ca.uvic.chisel.javasketch.ui.internal.presentation.JavaThreadSequenceView;

/**
 * @author Del Myers
 *
 */
public class OpenIThreadCommandHandler extends AbstractHandler implements IElementUpdater {

    public static final String COMMAND_ID = "ca.uvic.chisel.javasketch.command.openThreadCommand";

    private IThread getSelectedThread(ExecutionEvent event) {
        ISelection selection = HandlerUtil.getCurrentSelection(event);
        if (selection instanceof IStructuredSelection) {
            IStructuredSelection ss = (IStructuredSelection) selection;
            for (Iterator<?> i = ss.iterator(); i.hasNext();) {
                Object next = i.next();
                Object o = next;
                if (next instanceof IAdaptable) {
                    o = ((IAdaptable) next).getAdapter(IThread.class);
                }
                if (o instanceof IThread) {
                    return (IThread) o;
                }
            }
        }
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.commands.IElementUpdater#updateElement(org.eclipse.ui.menus.UIElement, java.util.Map)
     */
    @SuppressWarnings("unchecked")
    @Override
    public void updateElement(UIElement element, Map parameters) {

    }

    /* (non-Javadoc)
     * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
     */
    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        //must execute in the ui thread
        IWorkbenchSite site = HandlerUtil.getActiveSite(event);
        if (site == null) {
            return null;
        }
        IWorkbenchPage page = site.getWorkbenchWindow().getActivePage();
        if (page == null) {
            return null;
        }
        IThread selectedThread = getSelectedThread(event);
        if (selectedThread != null) {
            try {
                IViewPart part = page.showView(JavaThreadSequenceView.VIEW_ID, null, IWorkbenchPage.VIEW_VISIBLE);
                if (part instanceof JavaThreadSequenceView) {
                    ((JavaThreadSequenceView) part).setInput(selectedThread);
                }

                //IDE.openEditor(page, new ProgramSketchEditorInput(selectedThread), "ca.uvic.chisel.javasketch.threadEditor");
            } catch (PartInitException e) {
                SketchPlugin.getDefault().log(e);
            }
        }
        return null;
    }

}