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         public boolean isEnabled() {
  41
  42                 // Check if we are closing down
  43                 IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  44                 if (window == null)
  45                         return false;
  46
  47                 // Check if we can find the project model root node
  48                 ISelection selection = window.getActivePage().getSelection(ProjectView.ID);
  49                 if (selection instanceof StructuredSelection) {
  50                         Object element = ((StructuredSelection) selection).getFirstElement();
  51                         if (element instanceof ILTTngProjectTreeNode) {
  52                                 ILTTngProjectTreeNode node = (ILTTngProjectTreeNode) element;
  53                                 while (node != null && !(node instanceof LTTngProjectRoot)) {
  54                                         node = node.getParent();
  55                                 }
  56                                 fProjectRoot = (node instanceof LTTngProjectRoot) ? (LTTngProjectRoot) node : null;
  57                         }
  58                 }
  59
  60                 return (fProjectRoot != null);
  61         }
  62
  63         // Handled if we are in the ProjectView
  64         public boolean isHandled() {
  65                 return true;
  66         }
  67
  68         // ------------------------------------------------------------------------
  69         // Execution
  70         // ------------------------------------------------------------------------
  71
  72         public Object execute(ExecutionEvent event) throws ExecutionException {
  73
  74                 if (fProjectRoot != null) {
  75                         fProjectRoot.refreshChildren();
  76                         fProjectRoot.refresh();
  77                 }
  78
  79                 return null;
  80         }
  81
  82         public void dispose() {
  83                 // TODO Auto-generated method stub
  84         }
  85
  86         // ------------------------------------------------------------------------
  87         // IHandlerListener
  88         // ------------------------------------------------------------------------
  89
  90         public void addHandlerListener(IHandlerListener handlerListener) {
  91                 // TODO Auto-generated method stub
  92         }
  93
  94         public void removeHandlerListener(IHandlerListener handlerListener) {
  95                 // TODO Auto-generated method stub
  96         }
  97
  98 }