org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/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.lttng.ui.views.control.handlers;
  13
  14 import org.eclipse.core.commands.AbstractHandler;
  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.linuxtools.lttng.ui.LTTngUiPlugin;
  25 import org.eclipse.linuxtools.lttng.ui.views.control.ControlView;
  26 import org.eclipse.linuxtools.lttng.ui.views.control.Messages;
  27 import org.eclipse.linuxtools.lttng.ui.views.control.dialogs.CreateSessionDialog;
  28 import org.eclipse.linuxtools.lttng.ui.views.control.dialogs.ICreateSessionDialog;
  29 import org.eclipse.linuxtools.lttng.ui.views.control.model.impl.TraceSessionGroup;
  30 import org.eclipse.ui.IWorkbenchPage;
  31 import org.eclipse.ui.IWorkbenchPart;
  32 import org.eclipse.ui.IWorkbenchWindow;
  33 import org.eclipse.ui.PlatformUI;
  34
  35 /**
  36  * <b><u>CreateSessionHandler</u></b>
  37  * <p>
  38  * Command handler implementation to create a trace session.
  39  * </p>
  40  */
  41 public class CreateSessionHandler extends AbstractHandler {
  42
  43     // ------------------------------------------------------------------------
  44     // Attributes
  45     // ------------------------------------------------------------------------
  46     /**
  47      * The trace session group the command is to be executed on.
  48      */
  49     private TraceSessionGroup fSessionGroup = null;
  50
  51     // ------------------------------------------------------------------------
  52     // Operations
  53     // ------------------------------------------------------------------------
  54     /*
  55      * (non-Javadoc)
  56      * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  57      */
  58     @Override
  59     public Object execute(ExecutionEvent event) throws ExecutionException {
  60         IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  61         if (window == null) {
  62             return false;
  63         }
  64
  65         // Open dialog box for the node name and address
  66         ICreateSessionDialog dialog = new CreateSessionDialog(window.getShell(), fSessionGroup);
  67
  68         if (dialog.open() != Window.OK) {
  69             return null;
  70         }
  71
  72         final String sessionName = dialog.getSessionName();
  73         final String sessionPath = dialog.isDefaultSessionPath() ? null : dialog.getSessionPath();
  74
  75         Job job = new Job(Messages.TraceControl_CreateSessionJob) {
  76             @Override
  77             protected IStatus run(IProgressMonitor monitor) {
  78                 try {
  79                     fSessionGroup.createSession(sessionName, sessionPath, monitor);
  80                 } catch (ExecutionException e) {
  81                     return new Status(Status.ERROR, LTTngUiPlugin.PLUGIN_ID, e.toString());
  82                 }
  83                 return Status.OK_STATUS;
  84             }
  85         };
  86         job.setUser(true);
  87         job.schedule();
  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         fSessionGroup = null;
  99
 100         // Check if we are closing down
 101         IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 102         if (window == null) {
 103             return false;
 104         }
 105
 106         // Check if we are in the Project View
 107         IWorkbenchPage page = window.getActivePage();
 108         if (page == null) {
 109             return false;
 110         }
 111
 112         IWorkbenchPart part = page.getActivePart();
 113         if (!(part instanceof ControlView)) {
 114             return false;
 115         }
 116
 117         // Check if the session group project is selected
 118         ISelection selection = page.getSelection(ControlView.ID);
 119         if (selection instanceof StructuredSelection) {
 120             Object element = ((StructuredSelection) selection).getFirstElement();
 121             fSessionGroup = (element instanceof TraceSessionGroup) ? (TraceSessionGroup) element : null;
 122         }
 123         return fSessionGroup != null;
 124     }
 125 }