source: trunk/org.modelica.mdt/src/org/modelica/mdt/ui/ModelicaElementContentProvider.java @ 96

/*
 * This file is part of Modelica Development Tooling.
 *
 * Copyright (c) 2005, Linköpings 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 Linköpings 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;

import java.util.List;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.modelica.mdt.MdtPlugin;
import org.modelica.mdt.core.IModelicaProject;
import org.modelica.mdt.core.IModelicaRoot;
import org.modelica.mdt.core.IParent;
import org.modelica.mdt.internal.core.SystemLibrary;

/**
 * @author Elmir Jagudin
 *
 */
public class ModelicaElementContentProvider implements ITreeContentProvider 
{

    public Object[] getElements(Object inputElement)
    {
        try
        {
            if (inputElement instanceof IModelicaRoot)
            {
                return ((IModelicaRoot)inputElement).getProjects();
            }
            
        }
        catch (CoreException e)
        {
            MdtPlugin.log(e);
        }
        return new Object[] {};
    }
    
    public void dispose()
    {
    }

    public void inputChanged(Viewer viewer, Object oldInput, Object newInput)
    {
    }

    public Object[] getChildren(Object parent)
    {
        if (parent instanceof IContainer)
        {
            try
            {
                return ((IContainer)parent).members();
            }
            catch (CoreException e)
            {
                MdtPlugin.log(e);
            }
        }
        else if (parent instanceof IModelicaProject)
        {
            List<?> list = ((IModelicaProject)parent).getRootFolder().getChildren();
            
            Object[] children = new Object[list.size()+1];
            /*
             * add as last element system library
             */
            list.toArray(children);
            children[children.length-1] = new SystemLibrary();
            return children; 
        }
        else if (parent instanceof IParent)
        {
            return ((IParent)parent).getChildren().toArray();
        }
        return null;
    }

    public Object getParent(Object element)
    {
        return null;
    }

    public boolean hasChildren(Object element)
    {
        if (element instanceof IProject)
        {
            return ((IProject)element).isOpen();
        }
        else if (element instanceof IFolder)
        {
            return true;
        }
        else if (element instanceof IModelicaProject)
        {
            return ((IModelicaProject)element).getProject().isOpen();
        }
        else if (element instanceof IParent)
        {
            try 
            {
                return ((IParent)element).hasChildren();
            } 
            catch (CoreException e) 
            {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        return false;
    }
}