source: trunk/org.modelica.mdt/src/org/modelica/mdt/ui/ProjectsView.java @ 105

package org.modelica.mdt.ui;

import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;

import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.TreeViewer;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.model.WorkbenchLabelProvider;
import org.eclipse.ui.part.DrillDownAdapter;
import org.eclipse.ui.part.ViewPart;
import org.modelica.mdt.MdtPlugin;
import org.modelica.mdt.core.ModelicaCore;

public class ProjectsView extends ViewPart
{
    /* key widgets' tags for abbot */
    public static final String TREE_TAG = "treeParentTag";

    private TreeViewer viewer;
    private DrillDownAdapter drillDownAdapter;
    private IResourceChangeListener resourceListener;
    private ProjectsViewDoubleClickAction doubleClickAction;


    @Override
    public void createPartControl(Composite parent)
    {

        IWorkspace workspace = ResourcesPlugin.getWorkspace();
        viewer =
            new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);

        viewer.setContentProvider(new ModelicaElementContentProvider());
        viewer.setLabelProvider(new WorkbenchLabelProvider());
        viewer.setInput(ModelicaCore.getModelicaRoot());

        MdtPlugin.tag(viewer.getTree(), TREE_TAG);
        drillDownAdapter = new DrillDownAdapter(viewer);
        
        makeActions();
        hookDoubleClickAction();
        hookContextMenu();
        
        resourceListener = new IResourceChangeListener()
        {
            public void resourceChanged(IResourceChangeEvent event)
            {
                if (event.getType() != IResourceChangeEvent.POST_CHANGE)
                {
                     return;
                }

                //TODO this must be made more selective
                // a list of objects (tree-nodes) need to be made
                // from resource delta and posted to UI thread
                // se http://www.eclipse.org/articles/Article-Resource-deltas/resource-deltas.html
                getViewSite().getShell().getDisplay().asyncExec(new Runnable()
                {
                     public void run()
                     {
                         viewer.refresh(true);
                     }
                });
            }
        };
        workspace.addResourceChangeListener(resourceListener);
    }

    @Override
    public void setFocus()
    {
        viewer.getTree().setFocus();
    }
    
    private void hookContextMenu()
    {
        MenuManager menuMgr = new MenuManager("#PopupMenu");
        menuMgr.setRemoveAllWhenShown(true);
        menuMgr.addMenuListener(new IMenuListener()
        {
            public void menuAboutToShow(IMenuManager manager)
            {
                ProjectsView.this.fillContextMenu(manager);
            }
        });
        Menu menu = menuMgr.createContextMenu(viewer.getControl());
        viewer.getControl().setMenu(menu);
        getSite().registerContextMenu(menuMgr, viewer);
        getSite().setSelectionProvider(viewer);
    }
    
    private void makeActions() 
    {
        doubleClickAction = new ProjectsViewDoubleClickAction(viewer); 
    }

    private void hookDoubleClickAction() 
    {
        viewer.addDoubleClickListener(new IDoubleClickListener() 
        {
            public void doubleClick(DoubleClickEvent event) 
            {
                doubleClickAction.run();
            }
        });
    }
    
    private void fillContextMenu(IMenuManager manager) 
    {
        manager.add(new Separator());
        drillDownAdapter.addNavigationActions(manager);
        // Other plug-ins can contribute there actions here
        manager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
    }

    @Override
    public void dispose()
    {
        super.dispose();

        ResourcesPlugin.getWorkspace().
            removeResourceChangeListener(resourceListener);
    }

}