org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/internal/tmf/ui/project/handlers/DeleteTraceHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2010, 2011 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.internal.tmf.ui.project.handlers;
  14
  15 import java.util.Iterator;
  16 import java.util.LinkedList;
  17 import java.util.List;
  18
  19 import org.eclipse.core.commands.AbstractHandler;
  20 import org.eclipse.core.commands.ExecutionEvent;
  21 import org.eclipse.core.commands.ExecutionException;
  22 import org.eclipse.core.resources.IFile;
  23 import org.eclipse.core.resources.IResource;
  24 import org.eclipse.core.runtime.CoreException;
  25 import org.eclipse.core.runtime.IPath;
  26 import org.eclipse.core.runtime.NullProgressMonitor;
  27 import org.eclipse.jface.viewers.ISelection;
  28 import org.eclipse.jface.viewers.ISelectionProvider;
  29 import org.eclipse.jface.viewers.TreeSelection;
  30 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  31 import org.eclipse.linuxtools.tmf.ui.project.model.ITmfProjectModelElement;
  32 import org.eclipse.linuxtools.tmf.ui.project.model.TmfExperimentElement;
  33 import org.eclipse.linuxtools.tmf.ui.project.model.TmfExperimentFolder;
  34 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
  35 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceFolder;
  36 import org.eclipse.swt.SWT;
  37 import org.eclipse.swt.widgets.Display;
  38 import org.eclipse.swt.widgets.MessageBox;
  39 import org.eclipse.swt.widgets.Shell;
  40 import org.eclipse.ui.IEditorReference;
  41 import org.eclipse.ui.IWorkbench;
  42 import org.eclipse.ui.IWorkbenchPage;
  43 import org.eclipse.ui.IWorkbenchPart;
  44 import org.eclipse.ui.IWorkbenchWindow;
  45 import org.eclipse.ui.PlatformUI;
  46 import org.eclipse.ui.part.FileEditorInput;
  47
  48 /**
  49  * <b><u>DeleteTraceHandler</u></b>
  50  * <p>
  51  */
  52 public class DeleteTraceHandler extends AbstractHandler {
  53
  54     private TreeSelection fSelection = null;
  55
  56     // ------------------------------------------------------------------------
  57     // Validation
  58     // ------------------------------------------------------------------------
  59
  60     @Override
  61     public boolean isEnabled() {
  62
  63         // Check if we are closing down
  64         IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  65         if (window == null) {
  66             return false;
  67         }
  68
  69         // Get the selection
  70         IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
  71         IWorkbenchPart part = page.getActivePart();
  72         ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
  73         if (selectionProvider == null) {
  74             return false;
  75         }
  76         ISelection selection = selectionProvider.getSelection();
  77
  78         // Make sure selection contains only traces
  79         fSelection = null;
  80         if (selection instanceof TreeSelection) {
  81             fSelection = (TreeSelection) selection;
  82             Iterator<Object> iterator = fSelection.iterator();
  83             while (iterator.hasNext()) {
  84                 Object element = iterator.next();
  85                 if (!(element instanceof TmfTraceElement)) {
  86                     return false;
  87                 }
  88             }
  89         }
  90
  91         // If we get here, either nothing is selected or everything is a trace
  92         return !selection.isEmpty();
  93     }
  94
  95     // ------------------------------------------------------------------------
  96     // Execution
  97     // ------------------------------------------------------------------------
  98
  99     @Override
 100     public Object execute(ExecutionEvent event) throws ExecutionException {
 101
 102         // Check if we are closing down
 103         IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 104         if (window == null) {
 105             return null;
 106         }
 107
 108         // Confirm the operation
 109         Shell shell = window.getShell();
 110         MessageBox confirmOperation = new MessageBox(shell, SWT.ICON_QUESTION | SWT.CANCEL | SWT.OK);
 111         confirmOperation.setText(Messages.DeleteDialog_Title);
 112         confirmOperation.setMessage(Messages.DeleteTraceHandler_Message);
 113         if (confirmOperation.open() != SWT.OK) {
 114             return null;
 115         }
 116
 117         Iterator<Object> iterator = fSelection.iterator();
 118         while (iterator.hasNext()) {
 119             Object element = iterator.next();
 120             if (element instanceof TmfTraceElement) {
 121                 final TmfTraceElement trace = (TmfTraceElement) element;
 122                 IResource resource = trace.getResource();
 123                 try {
 124                     // Close the trace if open
 125                     IFile file = trace.getBookmarksFile();
 126                     FileEditorInput input = new FileEditorInput(file);
 127                     IWorkbench wb = PlatformUI.getWorkbench();
 128                     for (IWorkbenchWindow wbWindow : wb.getWorkbenchWindows()) {
 129                         for (IWorkbenchPage wbPage : wbWindow.getPages()) {
 130                             for (IEditorReference editorReference : wbPage.getEditorReferences()) {
 131                                 if (editorReference.getEditorInput().equals(input)) {
 132                                     wbPage.closeEditor(editorReference.getEditor(false), false);
 133                                 }
 134                             }
 135                         }
 136                     }
 137
 138                     IPath path = resource.getLocation();
 139                     if (path != null && (trace.getParent() instanceof TmfTraceFolder)) {
 140                         TmfExperimentFolder experimentFolder = trace.getProject().getExperimentsFolder();
 141
 142                         // Propagate the removal to traces
 143                         for (ITmfProjectModelElement experiment : experimentFolder.getChildren()) {
 144                             List<ITmfProjectModelElement> toRemove = new LinkedList<ITmfProjectModelElement>();
 145                             for (ITmfProjectModelElement child : experiment.getChildren()) {
 146                                 if (child.getName().equals(trace.getName())) {
 147                                     toRemove.add(child);
 148                                 }
 149                             }
 150                             for (ITmfProjectModelElement child : toRemove) {
 151                                 // Close the experiment if open
 152                                 file = ((TmfExperimentElement) experiment).getBookmarksFile();
 153                                 input = new FileEditorInput(file);
 154                                 for (IWorkbenchWindow wbWindow : wb.getWorkbenchWindows()) {
 155                                     for (IWorkbenchPage wbPage : wbWindow.getPages()) {
 156                                         for (IEditorReference editorReference : wbPage.getEditorReferences()) {
 157                                             if (editorReference.getEditorInput().equals(input)) {
 158                                                 wbPage.closeEditor(editorReference.getEditor(false), false);
 159                                             }
 160                                         }
 161                                     }
 162                                 }
 163                                 experiment.removeChild(child);
 164                                 child.getResource().delete(true, null);
 165                             }
 166                         }
 167
 168                         // Delete supplementary files
 169                         trace.deleteSupplementaryFolder();
 170                     }
 171
 172                     // Finally, delete the trace
 173                     resource.delete(true, new NullProgressMonitor());
 174
 175                     // Refresh the project
 176                     trace.getProject().refresh();
 177
 178                 } catch (final CoreException e) {
 179                     Display.getDefault().asyncExec(new Runnable() {
 180                         @Override
 181                         public void run() {
 182                             final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
 183                             mb.setText(Messages.DeleteTraceHandler_Error + ' ' + trace.getName());
 184                             mb.setMessage(e.getMessage());
 185                             mb.open();
 186                         }
 187                     });
 188                     Activator.getDefault().logError("Error deleting trace: " + trace.getName(), e); //$NON-NLS-1$
 189                 }
 190             }
 191         }
 192
 193         return null;
 194     }
 195 }