org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/project/handlers/RefreshHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2010 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.ui.views.project.handlers;
  14
  15 import org.eclipse.core.commands.AbstractHandler;
  16 import org.eclipse.core.commands.ExecutionEvent;
  17 import org.eclipse.core.commands.ExecutionException;
  18 import org.eclipse.core.resources.IResource;
  19 import org.eclipse.core.resources.IWorkspaceRoot;
  20 import org.eclipse.core.resources.ResourcesPlugin;
  21 import org.eclipse.core.runtime.CoreException;
  22 import org.eclipse.jface.viewers.ISelection;
  23 import org.eclipse.jface.viewers.StructuredSelection;
  24 import org.eclipse.linuxtools.tmf.ui.views.project.ProjectView;
  25 import org.eclipse.linuxtools.tmf.ui.views.project.model.ITmfProjectTreeNode;
  26 import org.eclipse.linuxtools.tmf.ui.views.project.model.TmfProjectRoot;
  27 import org.eclipse.ui.IWorkbenchWindow;
  28 import org.eclipse.ui.PlatformUI;
  29
  30 /**
  31  * <b><u>RefreshHandler</u></b>
  32  * <p>
  33  * TODO: Implement me. Please.
  34  */
  35 public class RefreshHandler extends AbstractHandler {
  36
  37         private TmfProjectRoot fProjectRoot = null;
  38
  39         // ------------------------------------------------------------------------
  40         // Validation
  41         // ------------------------------------------------------------------------
  42
  43         @Override
  44         public boolean isEnabled() {
  45
  46                 // Check if we are closing down
  47                 IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  48                 if (window == null)
  49                         return false;
  50
  51                 // Check if we can find the project model root node
  52                 ISelection selection = window.getActivePage().getSelection(ProjectView.ID);
  53                 if (selection instanceof StructuredSelection) {
  54                         Object element = ((StructuredSelection) selection).getFirstElement();
  55                         if (element instanceof ITmfProjectTreeNode) {
  56                                 ITmfProjectTreeNode node = (ITmfProjectTreeNode) element;
  57                                 while (node != null && !(node instanceof TmfProjectRoot)) {
  58                                         node = node.getParent();
  59                                 }
  60                                 fProjectRoot = (node instanceof TmfProjectRoot) ? (TmfProjectRoot) node : null;
  61                         }
  62                 }
  63
  64                 return (fProjectRoot != null);
  65         }
  66
  67         // ------------------------------------------------------------------------
  68         // Execution
  69         // ------------------------------------------------------------------------
  70
  71         @Override
  72         public Object execute(ExecutionEvent event) throws ExecutionException {
  73         IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
  74         try {
  75             root.refreshLocal(IResource.DEPTH_INFINITE, null);
  76             fProjectRoot.refreshChildren();
  77         } catch (CoreException e) {
  78             throw new ExecutionException("CoreException", e); //$NON-NLS-1$
  79         }
  80
  81                 return null;
  82         }
  83
  84 }