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

   1 /*******************************************************************************
   2 * Copyright (c) 2012, 2013 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 org.eclipse.core.commands.ExecutionException;
  16 import org.eclipse.core.commands.NotEnabledException;
  17 import org.eclipse.core.commands.NotHandledException;
  18 import org.eclipse.core.commands.common.NotDefinedException;
  19 import org.eclipse.jface.action.Action;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.ISelectionProvider;
  22 import org.eclipse.jface.viewers.IStructuredSelection;
  23 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  24 import org.eclipse.linuxtools.tmf.ui.project.model.TmfExperimentElement;
  25 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
  26 import org.eclipse.ui.IWorkbenchPage;
  27 import org.eclipse.ui.handlers.IHandlerService;
  28
  29 /**
  30  * <b><u>DeleteAction</u></b>
  31  * <p>
  32  * Implement me. Please.
  33  * <p>
  34  */
  35 public class DeleteAction extends Action {
  36
  37     private static final String DELETE_COMMAND_ID = "org.eclipse.ui.edit.delete"; //$NON-NLS-1$
  38
  39     private final IWorkbenchPage page;
  40     private final ISelectionProvider selectionProvider;
  41     private boolean tracesSelected;
  42     private boolean experimentsSelected;
  43
  44     /**
  45      * Default constructor
  46      * @param page the workbench page
  47      * @param selectionProvider the selection provider
  48      */
  49     public DeleteAction(IWorkbenchPage page, ISelectionProvider selectionProvider) {
  50         this.page = page;
  51         this.selectionProvider = selectionProvider;
  52     }
  53
  54     @Override
  55     public boolean isEnabled() {
  56         ISelection selection = selectionProvider.getSelection();
  57         if (!selection.isEmpty()) {
  58             tracesSelected = false;
  59             experimentsSelected = false;
  60             IStructuredSelection sSelection = (IStructuredSelection) selection;
  61             for (Object aSelection : sSelection.toList()) {
  62                 if (aSelection instanceof TmfTraceElement) {
  63                     tracesSelected = true;
  64                 }
  65                 if (aSelection instanceof TmfExperimentElement) {
  66                     experimentsSelected = true;
  67                 }
  68             }
  69             if (tracesSelected && experimentsSelected) {
  70                 return false;
  71             }
  72             return (tracesSelected || experimentsSelected);
  73         }
  74         return false;
  75     }
  76
  77     @Override
  78     public void run() {
  79         try {
  80             IHandlerService handlerService = (IHandlerService) page.getActivePart().getSite().getService(IHandlerService.class);
  81             if (tracesSelected || experimentsSelected) {
  82                 handlerService.executeCommand(DELETE_COMMAND_ID, null);
  83             }
  84         } catch (ExecutionException e) {
  85             Activator.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  86         } catch (NotDefinedException e) {
  87             Activator.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  88         } catch (NotEnabledException e) {
  89             Activator.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  90         } catch (NotHandledException e) {
  91             Activator.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  92         }
  93     }
  94
  95 }