source: trunk/org.modelica.mdt.ui/src/org/modelica/mdt/ui/view/ModelicaProjectsViewDoubleClickAction.java

/*
 * This file is part of Modelica Development Tooling.
 *
 * Copyright (c) 2005, Link�pings universitet, Department of
 * Computer and Information Science, PELAB
 *
 * All rights reserved.
 *
 * (The new BSD license, see also
 * http://www.opensource.org/licenses/bsd-license.php)
 *
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 *
 * * Neither the name of Link�pings universitet nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.modelica.mdt.ui.view;

import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.modelica.mdt.core.IModelicaFolder;
import org.modelica.mdt.core.IModelicaClass;
import org.modelica.mdt.core.IModelicaProject;
import org.modelica.mdt.core.IStandardLibrary;

/**
 * Defines what happens when user double clicks on items in the
 * projects view tree. 
 */

public class ModelicaProjectsViewDoubleClickAction extends Action 
{
    private TreeViewer viewer;
    
    ModelicaProjectsViewDoubleClickAction(TreeViewer viewer)
    {
        this.viewer = viewer;
    }

    @Override
    public void run()
    {
        /* get the object that was double clicked */
        ISelection selection = viewer.getSelection();
        Object obj = ((IStructuredSelection)selection).getFirstElement();
        
        if (obj instanceof IModelicaProject ||
            obj instanceof IModelicaFolder  ||
            obj instanceof IModelicaClass   ||
            obj instanceof IStandardLibrary ||
            obj instanceof IProject         ||
            obj instanceof IFolder          )
                  
        {
            expandElement(obj);
        }
    }

    /**
     * expands element in the treeviewer, so that it's immediate children are
     * visible
     * @param element element to expand
     */
    private void expandElement(Object element) 
    {
        viewer.expandToLevel(element, 1);
    }
}