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.TmfUiPlugin;
  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 public class DeleteAction extends Action {
  30
  31     private static final String DELETE_TRACE_COMMAND_ID = "org.eclipse.linuxtools.tmf.ui.command.project.trace.delete"; //$NON-NLS-1$
  32     private static final String DELETE_EXPERIMENT_COMMAND_ID = "org.eclipse.linuxtools.tmf.ui.command.project.experiment.delete"; //$NON-NLS-1$
  33
  34     private IWorkbenchPage page;
  35     private ISelectionProvider selectionProvider;
  36     private boolean tracesSelected;
  37     private boolean experimentsSelected;
  38
  39     /**
  40      * Default constructor
  41      * @param page the workbench page
  42      * @param selectionProvider the selection provider
  43      */
  44     public DeleteAction(IWorkbenchPage page, ISelectionProvider selectionProvider) {
  45         this.page = page;
  46         this.selectionProvider = selectionProvider;
  47     }
  48
  49     /*
  50      * (non-Javadoc)
  51      * @see org.eclipse.jface.action.Action#isEnabled()
  52      */
  53     @Override
  54     public boolean isEnabled() {
  55         ISelection selection = selectionProvider.getSelection();
  56         if (!selection.isEmpty()) {
  57             tracesSelected = false;
  58             experimentsSelected = false;
  59             IStructuredSelection sSelection = (IStructuredSelection) selection;
  60             for (Object aSelection : sSelection.toList()) {
  61                 if (aSelection instanceof TmfTraceElement) {
  62                     tracesSelected = true;
  63                 }
  64                 if (aSelection instanceof TmfExperimentElement) {
  65                     experimentsSelected = true;
  66                 }
  67             }
  68             if (tracesSelected && experimentsSelected) {
  69                 return false;
  70             }
  71             return (tracesSelected || experimentsSelected);
  72         }
  73         return false;
  74     }
  75
  76     /*
  77      * (non-Javadoc)
  78      * @see org.eclipse.jface.action.Action#run()
  79      */
  80     @Override
  81     public void run() {
  82         try {
  83             IHandlerService handlerService = (IHandlerService) page.getActivePart().getSite().getService(IHandlerService.class);
  84             if (tracesSelected) {
  85                 handlerService.executeCommand(DELETE_TRACE_COMMAND_ID, null);
  86             } else if (experimentsSelected) {
  87                 handlerService.executeCommand(DELETE_EXPERIMENT_COMMAND_ID, null);
  88             }
  89         } catch (ExecutionException e) {
  90             TmfUiPlugin.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  91         } catch (NotDefinedException e) {
  92             TmfUiPlugin.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  93         } catch (NotEnabledException e) {
  94             TmfUiPlugin.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  95         } catch (NotHandledException e) {
  96             TmfUiPlugin.getDefault().logError("Error deleting resources", e); //$NON-NLS-1$
  97         }
  98     }
  99
 100 }