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.runtime.CoreException;
  23 import org.eclipse.core.runtime.IProgressMonitor;
  24 import org.eclipse.core.runtime.OperationCanceledException;
  25 import org.eclipse.jface.dialogs.MessageDialog;
  26 import org.eclipse.jface.viewers.ISelection;
  27 import org.eclipse.jface.viewers.IStructuredSelection;
  28 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  29 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
  30 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceFolder;
  31 import org.eclipse.swt.SWT;
  32 import org.eclipse.swt.widgets.Display;
  33 import org.eclipse.swt.widgets.MessageBox;
  34 import org.eclipse.swt.widgets.Shell;
  35 import org.eclipse.ui.IWorkbenchWindow;
  36 import org.eclipse.ui.PlatformUI;
  37 import org.eclipse.ui.actions.WorkspaceModifyOperation;
  38 import org.eclipse.ui.handlers.HandlerUtil;
  39
  40 /**
  41  * Handler for the Delete Folder command.
  42  */
  43 public class DeleteFolderHandler extends AbstractHandler {
  44
  45     // ------------------------------------------------------------------------
  46     // Execution
  47     // ------------------------------------------------------------------------
  48
  49     @Override
  50     public Object execute(ExecutionEvent event) throws ExecutionException {
  51
  52         // Check if we are closing down
  53         IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  54         if (window == null) {
  55             return null;
  56         }
  57
  58         // Confirm the operation
  59         Shell shell = window.getShell();
  60         MessageBox confirmOperation = new MessageBox(shell, SWT.ICON_QUESTION | SWT.CANCEL | SWT.OK);
  61         confirmOperation.setText(Messages.DeleteDialog_Title);
  62         confirmOperation.setMessage(Messages.DeleteFolderHandler_Message);
  63         if (confirmOperation.open() != SWT.OK) {
  64             return null;
  65         }
  66
  67         // Get the selection
  68         ISelection selection = HandlerUtil.getCurrentSelection(event);
  69         if (!(selection instanceof IStructuredSelection)) {
  70             return null;
  71         }
  72         final Iterator<Object> iterator = ((IStructuredSelection) selection).iterator();
  73
  74         WorkspaceModifyOperation operation = new WorkspaceModifyOperation() {
  75             @Override
  76             public void execute(IProgressMonitor monitor) throws CoreException {
  77                 monitor.beginTask("", 1000); //$NON-NLS-1$
  78                 while (iterator.hasNext()) {
  79                     if (monitor.isCanceled()) {
  80                         throw new OperationCanceledException();
  81                     }
  82                     Object element = iterator.next();
  83                     if (element instanceof TmfTraceFolder) {
  84                         final TmfTraceFolder folder = (TmfTraceFolder) element;
  85                         IResource resource = folder.getResource();
  86
  87                         try {
  88                             // delete all traces under this folder
  89                             for (TmfTraceElement traceElement : folder.getTraces()) {
  90                                 traceElement.delete(null);
  91                             }
  92
  93                             // Finally, delete the folder
  94                             resource.delete(true, monitor);
  95                         } catch (final CoreException e) {
  96                             Display.getDefault().asyncExec(new Runnable() {
  97                                 @Override
  98                                 public void run() {
  99                                     final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
 100                                     mb.setText(Messages.DeleteFolderHandler_Error + ' ' + folder.getName());
 101                                     mb.setMessage(e.getMessage());
 102                                     mb.open();
 103                                 }
 104                             });
 105                             Activator.getDefault().logError("Error deleting folder: " + folder.getName(), e); //$NON-NLS-1$
 106                         }
 107                     }
 108                 }
 109             }
 110         };
 111
 112         try {
 113             PlatformUI.getWorkbench().getProgressService().busyCursorWhile(operation);
 114         } catch (InterruptedException e) {
 115             return null;
 116         } catch (InvocationTargetException e) {
 117             MessageDialog.openError(window.getShell(), e.toString(), e.getTargetException().toString());
 118             return null;
 119         }
 120
 121         return null;
 122     }
 123
 124 }