org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/tracecontrol/actions/DeleteTrace.java

   1 /*******************************************************************************
   2  * Copyright (c) 2011 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  *   Bernd Hufmann - Initial API and implementation
  11  *
  12  *******************************************************************************/
  13 package org.eclipse.linuxtools.lttng.ui.tracecontrol.actions;
  14
  15 import java.util.ArrayList;
  16 import java.util.Iterator;
  17 import java.util.List;
  18
  19 import org.eclipse.jface.action.IAction;
  20 import org.eclipse.jface.dialogs.MessageDialog;
  21 import org.eclipse.jface.viewers.ISelection;
  22 import org.eclipse.jface.viewers.IStructuredSelection;
  23 import org.eclipse.linuxtools.lttng.core.tracecontrol.model.TraceResource;
  24 import org.eclipse.linuxtools.lttng.ui.tracecontrol.Messages;
  25 import org.eclipse.rse.core.events.ISystemRemoteChangeEvents;
  26 import org.eclipse.rse.core.model.ISystemRegistry;
  27 import org.eclipse.rse.core.model.SystemStartHere;
  28 import org.eclipse.rse.ui.SystemBasePlugin;
  29 import org.eclipse.swt.widgets.Shell;
  30 import org.eclipse.ui.IObjectActionDelegate;
  31 import org.eclipse.ui.IViewActionDelegate;
  32 import org.eclipse.ui.IViewPart;
  33 import org.eclipse.ui.IWorkbenchPart;
  34 import org.eclipse.ui.IWorkbenchWindow;
  35 import org.eclipse.ui.IWorkbenchWindowActionDelegate;
  36
  37 /**
  38  * <b><u>DeleteTrace</u></b>
  39  * <p>
  40  * Action implementation to delete a new trace.
  41  * </p>
  42  */
  43 public class DeleteTrace implements IObjectActionDelegate, IWorkbenchWindowActionDelegate, IViewActionDelegate {
  44
  45     // ------------------------------------------------------------------------
  46     // Attributes
  47     // ------------------------------------------------------------------------
  48
  49     private List<TraceResource> fSelectedTraces;
  50
  51     // ------------------------------------------------------------------------
  52     // Constructors
  53     // ------------------------------------------------------------------------
  54
  55     public DeleteTrace() {
  56         fSelectedTraces = new ArrayList<TraceResource>();
  57     }
  58
  59     // ------------------------------------------------------------------------
  60     // Operations
  61     // ------------------------------------------------------------------------
  62
  63     /*
  64      * (non-Javadoc)
  65      * @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.action.IAction, org.eclipse.ui.IWorkbenchPart)
  66      */
  67     @Override
  68     public void setActivePart(IAction arg0, IWorkbenchPart arg1) {
  69     }
  70
  71     /**
  72      * Gets the first selected target.
  73      *
  74      * @return first selected target.
  75      */
  76     protected TraceResource getSelectedTarget() {
  77         if (fSelectedTraces.size() > 0) {
  78             return (TraceResource) fSelectedTraces.get(0);
  79         }
  80         return null;
  81     }
  82
  83     /*
  84      * (non-Javadoc)
  85      * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
  86      */
  87     @Override
  88     public void run(IAction arg0) {
  89
  90                 boolean confirm = MessageDialog.openConfirm(getShell(),
  91                                 Messages.DeleteTrace_ConfirmTitle,
  92                                 Messages.DeleteTrace_ConfirmMessage);
  93                 if (!confirm) {
  94                         return;
  95                 }
  96
  97         int size = fSelectedTraces.size();
  98         for (int i = 0; i < size; i++) {
  99
 100             final TraceResource trace = (TraceResource) fSelectedTraces.get(i);
 101
 102             trace.getParent().removeTrace(trace);
 103
 104             ISystemRegistry registry = SystemStartHere.getSystemRegistry();
 105             registry.fireRemoteResourceChangeEvent(ISystemRemoteChangeEvents.SYSTEM_REMOTE_RESOURCE_DELETED, trace, trace.getParent(), trace.getSubSystem(), null);
 106         }
 107     }
 108
 109     /*
 110      * (non-Javadoc)
 111      * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
 112      */
 113     @SuppressWarnings("unchecked")
 114     @Override
 115     public void selectionChanged(IAction action, ISelection selection) {
 116
 117         if (selection instanceof IStructuredSelection) {
 118             fSelectedTraces.clear();
 119
 120             // store the selected targets to be used when running
 121             Iterator<IStructuredSelection> theSet = ((IStructuredSelection) selection).iterator();
 122             while (theSet.hasNext()) {
 123                 Object obj = theSet.next();
 124                 if (obj instanceof TraceResource) {
 125                     fSelectedTraces.add((TraceResource)obj);
 126                 }
 127             }
 128         }
 129
 130     }
 131
 132     /**
 133      * Returns the active workbench shell of this plug-in.
 134      *
 135      * @return active workbench shell.
 136      */
 137     protected Shell getShell() {
 138         return SystemBasePlugin.getActiveWorkbenchShell();
 139     }
 140
 141     /*
 142      * (non-Javadoc)
 143      * @see org.eclipse.ui.IWorkbenchWindowActionDelegate#init(org.eclipse.ui.IWorkbenchWindow)
 144      */
 145     @Override
 146     public void init(IWorkbenchWindow window) {
 147     }
 148
 149     /*
 150      * (non-Javadoc)
 151      * @see org.eclipse.ui.IWorkbenchWindowActionDelegate#dispose()
 152      */
 153     @Override
 154     public void dispose() {
 155     }
 156
 157     /*
 158      * (non-Javadoc)
 159      * @see org.eclipse.ui.IViewActionDelegate#init(org.eclipse.ui.IViewPart)
 160      */
 161     @Override
 162     public void init(IViewPart view) {
 163     }
 164 }