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

   1 /*******************************************************************************
   2  * Copyright (c) 2014 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  *   Patrick Tasse - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.internal.tmf.ui.project.handlers;
  14
  15 import java.lang.reflect.InvocationTargetException;
  16 import java.util.Iterator;
  17
  18 import org.eclipse.core.commands.AbstractHandler;
  19 import org.eclipse.core.commands.ExecutionEvent;
  20 import org.eclipse.core.commands.ExecutionException;
  21 import org.eclipse.core.resources.IResource;
  22 import org.eclipse.core.resources.IResourceVisitor;
  23 import org.eclipse.core.runtime.CoreException;
  24 import org.eclipse.core.runtime.IProgressMonitor;
  25 import org.eclipse.core.runtime.OperationCanceledException;
  26 import org.eclipse.jface.dialogs.MessageDialog;
  27 import org.eclipse.jface.viewers.ISelection;
  28 import org.eclipse.jface.viewers.IStructuredSelection;
  29 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  30 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
  31 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceFolder;
  32 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTracesFolder;
  33 import org.eclipse.swt.SWT;
  34 import org.eclipse.swt.widgets.Display;
  35 import org.eclipse.swt.widgets.MessageBox;
  36 import org.eclipse.swt.widgets.Shell;
  37 import org.eclipse.ui.IWorkbenchWindow;
  38 import org.eclipse.ui.PlatformUI;
  39 import org.eclipse.ui.actions.WorkspaceModifyOperation;
  40 import org.eclipse.ui.handlers.HandlerUtil;
  41
  42 /**
  43  * Handler for the Delete Folder command.
  44  */
  45 public class DeleteFolderHandler extends AbstractHandler {
  46
  47     // ------------------------------------------------------------------------
  48     // Execution
  49     // ------------------------------------------------------------------------
  50
  51     @Override
  52     public Object execute(ExecutionEvent event) throws ExecutionException {
  53
  54         // Check if we are closing down
  55         IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  56         if (window == null) {
  57             return null;
  58         }
  59
  60         // Get the selection
  61         ISelection selection = HandlerUtil.getCurrentSelection(event);
  62         if (!(selection instanceof IStructuredSelection)) {
  63             return null;
  64         }
  65         final boolean isTracesFolder = ((IStructuredSelection) selection).iterator().next() instanceof TmfTracesFolder;
  66
  67         // Confirm the operation
  68         Shell shell = window.getShell();
  69         MessageBox confirmOperation = new MessageBox(shell, SWT.ICON_QUESTION | SWT.CANCEL | SWT.OK);
  70         confirmOperation.setText(isTracesFolder ? Messages.ClearDialog_Title : Messages.DeleteDialog_Title);
  71         confirmOperation.setMessage(isTracesFolder ? Messages.DeleteFolderHandlerClear_Message : Messages.DeleteFolderHandler_Message);
  72         if (confirmOperation.open() != SWT.OK) {
  73             return null;
  74         }
  75
  76         final Iterator<Object> iterator = ((IStructuredSelection) selection).iterator();
  77
  78         WorkspaceModifyOperation operation = new WorkspaceModifyOperation() {
  79             @Override
  80             public void execute(final IProgressMonitor monitor) throws CoreException {
  81                 monitor.beginTask("", 1000); //$NON-NLS-1$
  82                 while (iterator.hasNext()) {
  83                     if (monitor.isCanceled()) {
  84                         throw new OperationCanceledException();
  85                     }
  86                     Object element = iterator.next();
  87                     if (element instanceof TmfTraceFolder) {
  88                         final TmfTraceFolder folder = (TmfTraceFolder) element;
  89                         final IResource resource = folder.getResource();
  90
  91                         try {
  92                             // delete all traces under this folder
  93                             for (TmfTraceElement traceElement : folder.getTraces()) {
  94                                 traceElement.delete(null);
  95                             }
  96
  97                             // Finally, delete the folder. For the Traces
  98                             // folder, we only delete the children since the
  99                             // folder should always be there.
 100                             if (folder instanceof TmfTracesFolder) {
 101                                 resource.accept(new IResourceVisitor() {
 102                                     @Override
 103                                     public boolean visit(IResource visitedResource) throws CoreException {
 104                                         if (visitedResource != resource) {
 105                                             visitedResource.delete(true, monitor);
 106                                         }
 107                                         return true;
 108                                     }
 109                                 }, IResource.DEPTH_ONE, 0);
 110                             } else {
 111                                 resource.delete(true, monitor);
 112                             }
 113                         } catch (final CoreException e) {
 114                             Display.getDefault().asyncExec(new Runnable() {
 115                                 @Override
 116                                 public void run() {
 117                                     final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
 118                                     mb.setText(isTracesFolder ? Messages.DeleteFolderHandlerClear_Error : Messages.DeleteFolderHandler_Error + ' ' + folder.getName());
 119                                     mb.setMessage(e.getMessage());
 120                                     mb.open();
 121                                 }
 122                             });
 123                             Activator.getDefault().logError("Error deleting folder: " + folder.getName(), e); //$NON-NLS-1$
 124                         }
 125                     }
 126                 }
 127             }
 128         };
 129
 130         try {
 131             PlatformUI.getWorkbench().getProgressService().busyCursorWhile(operation);
 132         } catch (InterruptedException e) {
 133             return null;
 134         } catch (InvocationTargetException e) {
 135             MessageDialog.openError(window.getShell(), e.toString(), e.getTargetException().toString());
 136             return null;
 137         }
 138
 139         return null;
 140     }
 141
 142 }