org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/project/handlers/DeleteTraceHandler.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.runtime.CoreException;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.StructuredSelection;
  22 import org.eclipse.linuxtools.tmf.ui.views.project.ProjectView;
  23 import org.eclipse.linuxtools.tmf.ui.views.project.model.ITmfProjectTreeNode;
  24 import org.eclipse.linuxtools.tmf.ui.views.project.model.TmfExperimentFolderNode;
  25 import org.eclipse.linuxtools.tmf.ui.views.project.model.TmfExperimentNode;
  26 import org.eclipse.linuxtools.tmf.ui.views.project.model.TmfTraceNode;
  27 import org.eclipse.ui.IWorkbenchPage;
  28 import org.eclipse.ui.IWorkbenchWindow;
  29 import org.eclipse.ui.PlatformUI;
  30
  31 /**
  32  * <b><u>DeleteTraceHandler</u></b>
  33  * <p>
  34  * TODO: Implement me. Please.
  35  */
  36 public class DeleteTraceHandler extends AbstractHandler {
  37
  38         private TmfTraceNode fTrace = null;
  39
  40         // ------------------------------------------------------------------------
  41         // Validation
  42         // ------------------------------------------------------------------------
  43
  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 a trace is selected
  52                 IWorkbenchPage page = window.getActivePage();
  53                 if (!(page.getActivePart() instanceof ProjectView))
  54                         return false;
  55
  56                 // Check if a trace is selected
  57                 ISelection selection = page.getSelection(ProjectView.ID);
  58                 if (selection instanceof StructuredSelection) {
  59                         Object element = ((StructuredSelection) selection).getFirstElement();
  60                         fTrace = (element instanceof TmfTraceNode) ? (TmfTraceNode) element : null;
  61                 }
  62
  63                 return (fTrace != null);
  64         }
  65
  66         // ------------------------------------------------------------------------
  67         // Execution
  68         // ------------------------------------------------------------------------
  69
  70         public Object execute(ExecutionEvent event) throws ExecutionException {
  71
  72                 IResource resource = fTrace.getResource();
  73                 ITmfProjectTreeNode parent = fTrace.getParent();
  74                 try {
  75                     if (!(parent instanceof TmfExperimentNode)) {
  76                         // Delete the trace from every experiment where it appears
  77                         TmfExperimentFolderNode experimentFolder = fTrace.getProject().getExperimentsFolder();
  78                         for (ITmfProjectTreeNode experiment : experimentFolder.getChildren()) {
  79                             for (int i = 0; i < experiment.getChildren().size(); i++) {
  80                                 TmfTraceNode trace = (TmfTraceNode) experiment.getChildren().get(i);
  81                                 if (trace.getResource().getLocation().equals(resource.getLocation())) {
  82                                     experiment.removeChild(trace);
  83                                     experiment.refresh();
  84                                     trace.getResource().delete(true, null);
  85                                 }
  86                             }
  87                         }
  88                     }
  89                         parent.removeChild(fTrace);
  90                         parent.refresh();
  91                         resource.delete(true, null);
  92                 } catch (CoreException e) {
  93                         e.printStackTrace();
  94                 }
  95
  96                 return null;
  97         }
  98
  99 }