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.tmf.ui.project.model.TmfExperimentElement;
  24 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
  25 import org.eclipse.ui.IWorkbenchPage;
  26 import org.eclipse.ui.handlers.IHandlerService;
  27
  28 public class DeleteAction extends Action {
  29
  30     private static final String DELETE_TRACE_COMMAND_ID = "org.eclipse.linuxtools.tmf.ui.command.project.trace.delete"; //$NON-NLS-1$
  31     private static final String DELETE_EXPERIMENT_COMMAND_ID = "org.eclipse.linuxtools.tmf.ui.command.project.experiment.delete"; //$NON-NLS-1$
  32
  33     private IWorkbenchPage page;
  34     private ISelectionProvider selectionProvider;
  35     private boolean tracesSelected;
  36     private boolean experimentsSelected;
  37
  38     /**
  39      * Default constructor
  40      * @param page the workbench page
  41      * @param selectionProvider the selection provider
  42      */
  43     public DeleteAction(IWorkbenchPage page, ISelectionProvider selectionProvider) {
  44         this.page = page;
  45         this.selectionProvider = selectionProvider;
  46     }
  47
  48     /*
  49      * (non-Javadoc)
  50      * @see org.eclipse.jface.action.Action#isEnabled()
  51      */
  52     @Override
  53     public boolean isEnabled() {
  54         ISelection selection = selectionProvider.getSelection();
  55         if (!selection.isEmpty()) {
  56             tracesSelected = false;
  57             experimentsSelected = false;
  58             IStructuredSelection sSelection = (IStructuredSelection) selection;
  59             for (Object aSelection : sSelection.toList()) {
  60                 if (aSelection instanceof TmfTraceElement) {
  61                     tracesSelected = true;
  62                 }
  63                 if (aSelection instanceof TmfExperimentElement) {
  64                     experimentsSelected = true;
  65                 }
  66             }
  67             if (tracesSelected && experimentsSelected) {
  68                 return false;
  69             }
  70             return (tracesSelected || experimentsSelected);
  71         }
  72         return false;
  73     }
  74
  75     /*
  76      * (non-Javadoc)
  77      * @see org.eclipse.jface.action.Action#run()
  78      */
  79     @Override
  80     public void run() {
  81         try {
  82             IHandlerService handlerService = (IHandlerService) page.getActivePart().getSite().getService(IHandlerService.class);
  83             if (tracesSelected) {
  84                 handlerService.executeCommand(DELETE_TRACE_COMMAND_ID, null);
  85             } else if (experimentsSelected) {
  86                 handlerService.executeCommand(DELETE_EXPERIMENT_COMMAND_ID, null);
  87             }
  88         } catch (ExecutionException e) {
  89             e.printStackTrace();
  90         } catch (NotDefinedException e) {
  91             e.printStackTrace();
  92         } catch (NotEnabledException e) {
  93             e.printStackTrace();
  94         } catch (NotHandledException e) {
  95             e.printStackTrace();
  96         }
  97     }
  98
  99 }