org.eclipse.tracecompass.lttng2.control.ui/src/org/eclipse/tracecompass/internal/lttng2/control/ui/views/handlers/CreateSessionHandler.java

   1 /**********************************************************************
   2  * Copyright (c) 2012, 2014 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  *   Bernd Hufmann - Updated for support of LTTng Tools 2.1
  12  **********************************************************************/
  13 package org.eclipse.tracecompass.internal.lttng2.control.ui.views.handlers;
  14
  15 import org.eclipse.core.commands.ExecutionEvent;
  16 import org.eclipse.core.commands.ExecutionException;
  17 import org.eclipse.core.runtime.IProgressMonitor;
  18 import org.eclipse.core.runtime.IStatus;
  19 import org.eclipse.core.runtime.Status;
  20 import org.eclipse.core.runtime.jobs.Job;
  21 import org.eclipse.jface.viewers.ISelection;
  22 import org.eclipse.jface.viewers.StructuredSelection;
  23 import org.eclipse.jface.window.Window;
  24 import org.eclipse.tracecompass.internal.lttng2.control.ui.Activator;
  25 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.ControlView;
  26 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.dialogs.ICreateSessionDialog;
  27 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.dialogs.TraceControlDialogFactory;
  28 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.messages.Messages;
  29 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceSessionGroup;
  30 import org.eclipse.ui.IWorkbenchPage;
  31
  32 /**
  33  * <p>
  34  * Command handler implementation to create a trace session.
  35  * </p>
  36  *
  37  * @author Bernd Hufmann
  38  */
  39 public class CreateSessionHandler extends BaseControlViewHandler {
  40
  41     // ------------------------------------------------------------------------
  42     // Attributes
  43     // ------------------------------------------------------------------------
  44
  45     /**
  46      * The trace session group the command is to be executed on.
  47      */
  48     private TraceSessionGroup fSessionGroup = null;
  49
  50     // ------------------------------------------------------------------------
  51     // Operations
  52     // ------------------------------------------------------------------------
  53
  54     @Override
  55     public Object execute(ExecutionEvent event) throws ExecutionException {
  56
  57         fLock.lock();
  58         try {
  59             final TraceSessionGroup sessionGroup = fSessionGroup;
  60
  61             // Open dialog box for the node name and address
  62             final ICreateSessionDialog dialog = TraceControlDialogFactory.getInstance().getCreateSessionDialog();
  63             dialog.initialize(sessionGroup);
  64
  65             if (dialog.open() != Window.OK) {
  66                 return null;
  67             }
  68
  69             Job job = new Job(Messages.TraceControl_CreateSessionJob) {
  70                 @Override
  71                 protected IStatus run(IProgressMonitor monitor) {
  72                     try {
  73                         sessionGroup.createSession(dialog.getParameters(), monitor);
  74                     } catch (ExecutionException e) {
  75                         return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_CreateSessionFailure, e);
  76                     }
  77                     return Status.OK_STATUS;
  78                 }
  79             };
  80             job.setUser(true);
  81             job.schedule();
  82         } finally {
  83             fLock.unlock();
  84         }
  85         return null;
  86     }
  87
  88     @Override
  89     public boolean isEnabled() {
  90
  91         // Get workbench page for the Control View
  92         IWorkbenchPage page = getWorkbenchPage();
  93         if (page == null) {
  94             return false;
  95         }
  96
  97         TraceSessionGroup sessionGroup = null;
  98
  99         // Check if the session group project is selected
 100         ISelection selection = page.getSelection(ControlView.ID);
 101         if (selection instanceof StructuredSelection) {
 102             Object element = ((StructuredSelection) selection).getFirstElement();
 103             sessionGroup = (element instanceof TraceSessionGroup) ? (TraceSessionGroup) element : null;
 104         }
 105
 106         boolean isEnabled = sessionGroup != null;
 107         fLock.lock();
 108         try {
 109             fSessionGroup = null;
 110             if(isEnabled) {
 111                 fSessionGroup = sessionGroup;
 112             }
 113         } finally {
 114             fLock.unlock();
 115         }
 116         return isEnabled;
 117     }
 118 }