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

   1 /*******************************************************************************
   2 * Copyright (c) 2012 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     /*
  55      * (non-Javadoc)
  56      * @see org.eclipse.jface.action.Action#isEnabled()
  57      */
  58     @Override
  59     public boolean isEnabled() {
  60         ISelection selection = selectionProvider.getSelection();
  61         if (!selection.isEmpty()) {
  62             tracesSelected = false;
  63             experimentsSelected = false;
  64             IStructuredSelection sSelection = (IStructuredSelection) selection;
  65             for (Object aSelection : sSelection.toList()) {
  66                 if (aSelection instanceof TmfTraceElement) {
  67                     tracesSelected = true;
  68                 }
  69                 if (aSelection instanceof TmfExperimentElement) {
  70                     experimentsSelected = true;
  71                 }
  72             }
  73             if (tracesSelected && experimentsSelected) {
  74                 return false;
  75             }
  76             return (tracesSelected || experimentsSelected);
  77         }
  78         return false;
  79     }
  80
  81     /*
  82      * (non-Javadoc)
  83      * @see org.eclipse.jface.action.Action#run()
  84      */
  85     @Override
  86     public void run() {
  87         try {
  88             IHandlerService handlerService = (IHandlerService) page.getActivePart().getSite().getService(IHandlerService.class);
  89             if (tracesSelected || experimentsSelected) {
  90                 handlerService.executeCommand(DELETE_COMMAND_ID, null);
  91             }
  92         } catch (ExecutionException e) {
  93             Activator.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  94         } catch (NotDefinedException e) {
  95             Activator.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  96         } catch (NotEnabledException e) {
  97             Activator.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  98         } catch (NotHandledException e) {
  99             Activator.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
 100         }
 101     }
 102
 103 }