org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/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.lttng.ui.views.project.handlers;
  14
  15 import org.eclipse.core.commands.ExecutionEvent;
  16 import org.eclipse.core.commands.ExecutionException;
  17 import org.eclipse.core.commands.IHandler;
  18 import org.eclipse.core.commands.IHandlerListener;
  19 import org.eclipse.jface.viewers.ISelection;
  20 import org.eclipse.jface.viewers.StructuredSelection;
  21 import org.eclipse.linuxtools.lttng.ui.views.project.ProjectView;
  22 import org.eclipse.linuxtools.lttng.ui.views.project.model.ILTTngProjectTreeNode;
  23 import org.eclipse.linuxtools.lttng.ui.views.project.model.LTTngProjectRoot;
  24 import org.eclipse.ui.IWorkbenchWindow;
  25 import org.eclipse.ui.PlatformUI;
  26
  27 /**
  28  * <b><u>RefreshHandler</u></b>
  29  * <p>
  30  * TODO: Implement me. Please.
  31  */
  32 public class RefreshHandler implements IHandler {
  33
  34         private LTTngProjectRoot fProjectRoot = null;
  35
  36         // ------------------------------------------------------------------------
  37         // Validation
  38         // ------------------------------------------------------------------------
  39
  40         @Override
  41         public boolean isEnabled() {
  42
  43                 // Check if we are closing down
  44                 IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  45                 if (window == null)
  46                         return false;
  47
  48                 // Check if we can find the project model root node
  49                 ISelection selection = window.getActivePage().getSelection(ProjectView.ID);
  50                 if (selection instanceof StructuredSelection) {
  51                         Object element = ((StructuredSelection) selection).getFirstElement();
  52                         if (element instanceof ILTTngProjectTreeNode) {
  53                                 ILTTngProjectTreeNode node = (ILTTngProjectTreeNode) element;
  54                                 while (node != null && !(node instanceof LTTngProjectRoot)) {
  55                                         node = node.getParent();
  56                                 }
  57                                 fProjectRoot = (node instanceof LTTngProjectRoot) ? (LTTngProjectRoot) node : null;
  58                         }
  59                 }
  60
  61                 return (fProjectRoot != null);
  62         }
  63
  64         // Handled if we are in the ProjectView
  65         @Override
  66         public boolean isHandled() {
  67                 return true;
  68         }
  69
  70         // ------------------------------------------------------------------------
  71         // Execution
  72         // ------------------------------------------------------------------------
  73
  74         @Override
  75         public Object execute(ExecutionEvent event) throws ExecutionException {
  76
  77                 if (fProjectRoot != null) {
  78                         fProjectRoot.refreshChildren();
  79                         fProjectRoot.refresh();
  80                 }
  81
  82                 return null;
  83         }
  84
  85         @Override
  86         public void dispose() {
  87                 // TODO Auto-generated method stub
  88         }
  89
  90         // ------------------------------------------------------------------------
  91         // IHandlerListener
  92         // ------------------------------------------------------------------------
  93
  94         @Override
  95         public void addHandlerListener(IHandlerListener handlerListener) {
  96                 // TODO Auto-generated method stub
  97         }
  98
  99         @Override
 100         public void removeHandlerListener(IHandlerListener handlerListener) {
 101                 // TODO Auto-generated method stub
 102         }
 103
 104 }