source: trunk/org.modelica.mdt/src/org/modelica/mdt/ui/ProjectsViewDoubleClickAction.java @ 99

package org.modelica.mdt.ui;

import org.eclipse.core.resources.IFile;
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.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;
import org.modelica.mdt.core.IModelicaFile;
import org.modelica.mdt.core.IModelicaFolder;
import org.modelica.mdt.core.IModelicaPackage;
import org.modelica.mdt.core.IModelicaProject;
import org.modelica.mdt.core.ISystemLibrary;

public class ProjectsViewDoubleClickAction extends Action 
{
    private TreeViewer viewer;
    
    ProjectsViewDoubleClickAction(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();
        
        /* open modelica files in an editor on double click */
        if (obj instanceof IModelicaFile)
        {
            openFile(((IModelicaFile)obj).getContainer());
        }
        /* open files in an editor on double click */
        else if (obj instanceof IFile)
        {
            openFile((IFile)obj);
        }
        /* expands a bunch of objects on double click */
        else if (obj instanceof IModelicaProject ||
                 obj instanceof IModelicaFolder  ||
                 obj instanceof IModelicaPackage ||
                 obj instanceof ISystemLibrary   ||
                 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);
    }

    /**
     * Opens file in the default editor
     * param file file to open
     */
    private void openFile(IFile file)
    {
    
        IWorkbenchPage page = PlatformUI.getWorkbench().
            getActiveWorkbenchWindow().getActivePage();

        if (page != null)
        {
        
            try
            {
            
                IDE.openEditor(page, file);
            } 
            catch (PartInitException e)  
            {
                // TODO proper error handling
                e.printStackTrace();
            }
        }

    }

}