org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/CreateSessionHandler.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  *   Bernd Hufmann - Initial API and implementation
  11  **********************************************************************/
  12 package org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers;
  13
  14 import org.eclipse.core.commands.ExecutionEvent;
  15 import org.eclipse.core.commands.ExecutionException;
  16 import org.eclipse.core.runtime.IProgressMonitor;
  17 import org.eclipse.core.runtime.IStatus;
  18 import org.eclipse.core.runtime.Status;
  19 import org.eclipse.core.runtime.jobs.Job;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.StructuredSelection;
  22 import org.eclipse.jface.window.Window;
  23 import org.eclipse.linuxtools.internal.lttng2.ui.Activator;
  24 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView;
  25 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.Messages;
  26 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.ICreateSessionDialog;
  27 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.TraceControlDialogFactory;
  28 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionGroup;
  29 import org.eclipse.ui.IWorkbenchPage;
  30
  31 /**
  32  * <b><u>CreateSessionHandler</u></b>
  33  * <p>
  34  * Command handler implementation to create a trace session.
  35  * </p>
  36  */
  37 public class CreateSessionHandler extends BaseControlViewHandler {
  38
  39     // ------------------------------------------------------------------------
  40     // Attributes
  41     // ------------------------------------------------------------------------
  42     /**
  43      * The trace session group the command is to be executed on.
  44      */
  45     private TraceSessionGroup fSessionGroup = null;
  46
  47     // ------------------------------------------------------------------------
  48     // Operations
  49     // ------------------------------------------------------------------------
  50     /*
  51      * (non-Javadoc)
  52      * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  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             ICreateSessionDialog dialog = TraceControlDialogFactory.getInstance().getCreateSessionDialog();
  63             dialog.setTraceSessionGroup(sessionGroup);
  64
  65             if (dialog.open() != Window.OK) {
  66                 return null;
  67             }
  68
  69             final String sessionName = dialog.getSessionName();
  70             final String sessionPath = dialog.isDefaultSessionPath() ? null : dialog.getSessionPath();
  71
  72             Job job = new Job(Messages.TraceControl_CreateSessionJob) {
  73                 @Override
  74                 protected IStatus run(IProgressMonitor monitor) {
  75                     try {
  76                         sessionGroup.createSession(sessionName, sessionPath, monitor);
  77                     } catch (ExecutionException e) {
  78                         return new Status(Status.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_CreateSessionFailure, e);
  79                     }
  80                     return Status.OK_STATUS;
  81                 }
  82             };
  83             job.setUser(true);
  84             job.schedule();
  85         } finally {
  86             fLock.unlock();
  87         }
  88         return null;
  89     }
  90
  91     /*
  92      * (non-Javadoc)
  93      * @see org.eclipse.core.commands.AbstractHandler#isEnabled()
  94      */
  95     @Override
  96     public boolean isEnabled() {
  97
  98         // Get workbench page for the Control View
  99         IWorkbenchPage page = getWorkbenchPage();
 100         if (page == null) {
 101             return false;
 102         }
 103
 104         TraceSessionGroup sessionGroup = null;
 105
 106         // Check if the session group project is selected
 107         ISelection selection = page.getSelection(ControlView.ID);
 108         if (selection instanceof StructuredSelection) {
 109             Object element = ((StructuredSelection) selection).getFirstElement();
 110             sessionGroup = (element instanceof TraceSessionGroup) ? (TraceSessionGroup) element : null;
 111         }
 112
 113         boolean isEnabled = sessionGroup != null;
 114         fLock.lock();
 115         try {
 116             fSessionGroup = null;
 117             if(isEnabled) {
 118                 fSessionGroup = sessionGroup;
 119             }
 120         } finally {
 121             fLock.unlock();
 122         }
 123         return isEnabled;
 124     }
 125 }