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.dialogs.ICreateSessionDialog;
  26 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.TraceControlDialogFactory;
  27 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.messages.Messages;
  28 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionGroup;
  29 import org.eclipse.ui.IWorkbenchPage;
  30
  31 /**
  32  * <p>
  33  * Command handler implementation to create a trace session.
  34  * </p>
  35  *
  36  * @author Bernd Hufmann
  37  */
  38 public class CreateSessionHandler extends BaseControlViewHandler {
  39
  40     // ------------------------------------------------------------------------
  41     // Attributes
  42     // ------------------------------------------------------------------------
  43     /**
  44      * The trace session group the command is to be executed on.
  45      */
  46     private TraceSessionGroup fSessionGroup = null;
  47
  48     // ------------------------------------------------------------------------
  49     // Operations
  50     // ------------------------------------------------------------------------
  51     /*
  52      * (non-Javadoc)
  53      * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  54      */
  55     @Override
  56     public Object execute(ExecutionEvent event) throws ExecutionException {
  57
  58         fLock.lock();
  59         try {
  60             final TraceSessionGroup sessionGroup = fSessionGroup;
  61
  62             // Open dialog box for the node name and address
  63             ICreateSessionDialog dialog = TraceControlDialogFactory.getInstance().getCreateSessionDialog();
  64             dialog.setTraceSessionGroup(sessionGroup);
  65
  66             if (dialog.open() != Window.OK) {
  67                 return null;
  68             }
  69
  70             final String sessionName = dialog.getSessionName();
  71             final String sessionPath = dialog.isDefaultSessionPath() ? null : dialog.getSessionPath();
  72
  73             Job job = new Job(Messages.TraceControl_CreateSessionJob) {
  74                 @Override
  75                 protected IStatus run(IProgressMonitor monitor) {
  76                     try {
  77                         sessionGroup.createSession(sessionName, sessionPath, monitor);
  78                     } catch (ExecutionException e) {
  79                         return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.TraceControl_CreateSessionFailure, e);
  80                     }
  81                     return Status.OK_STATUS;
  82                 }
  83             };
  84             job.setUser(true);
  85             job.schedule();
  86         } finally {
  87             fLock.unlock();
  88         }
  89         return null;
  90     }
  91
  92     /*
  93      * (non-Javadoc)
  94      * @see org.eclipse.core.commands.AbstractHandler#isEnabled()
  95      */
  96     @Override
  97     public boolean isEnabled() {
  98
  99         // Get workbench page for the Control View
 100         IWorkbenchPage page = getWorkbenchPage();
 101         if (page == null) {
 102             return false;
 103         }
 104
 105         TraceSessionGroup sessionGroup = null;
 106
 107         // Check if the session group project is selected
 108         ISelection selection = page.getSelection(ControlView.ID);
 109         if (selection instanceof StructuredSelection) {
 110             Object element = ((StructuredSelection) selection).getFirstElement();
 111             sessionGroup = (element instanceof TraceSessionGroup) ? (TraceSessionGroup) element : null;
 112         }
 113
 114         boolean isEnabled = sessionGroup != null;
 115         fLock.lock();
 116         try {
 117             fSessionGroup = null;
 118             if(isEnabled) {
 119                 fSessionGroup = sessionGroup;
 120             }
 121         } finally {
 122             fLock.unlock();
 123         }
 124         return isEnabled;
 125     }
 126 }