org.eclipse.tracecompass.lttng2.control.ui/src/org/eclipse/tracecompass/internal/lttng2/control/ui/views/handlers/AddContextOnDomainHandler.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  **********************************************************************/
  12 package org.eclipse.tracecompass.internal.lttng2.control.ui.views.handlers;
  13
  14 import java.util.Iterator;
  15 import java.util.List;
  16
  17 import org.eclipse.core.commands.ExecutionException;
  18 import org.eclipse.core.runtime.IProgressMonitor;
  19 import org.eclipse.jface.viewers.ISelection;
  20 import org.eclipse.jface.viewers.StructuredSelection;
  21 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TraceSessionState;
  22 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.ControlView;
  23 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  24 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceSessionComponent;
  25 import org.eclipse.ui.IWorkbenchPage;
  26
  27 /**
  28  * <p>
  29  * Command handler implementation to add contexts to all channels and all events.
  30  * </p>
  31  *
  32  * @author Bernd Hufmann
  33  */
  34 public class AddContextOnDomainHandler extends BaseAddContextHandler {
  35
  36     // ------------------------------------------------------------------------
  37     // Attributes
  38     // ------------------------------------------------------------------------
  39
  40     // ------------------------------------------------------------------------
  41     // Operations
  42     // ------------------------------------------------------------------------
  43
  44     @Override
  45     public void addContexts(CommandParameter param, List<String> contextNames, IProgressMonitor monitor) throws ExecutionException {
  46         if (param instanceof DomainCommandParameter) {
  47             TraceDomainComponent domain = ((DomainCommandParameter)param).getDomain();
  48             domain.addContexts(contextNames, monitor);
  49         }
  50     }
  51
  52     @Override
  53     public boolean isEnabled() {
  54
  55         // Get workbench page for the Control View
  56         IWorkbenchPage page = getWorkbenchPage();
  57         if (page == null) {
  58             return false;
  59         }
  60
  61         TraceDomainComponent domain = null;
  62         TraceSessionComponent session = null;
  63
  64         // Check if one domain is selected
  65         ISelection selection = page.getSelection(ControlView.ID);
  66         if (selection instanceof StructuredSelection) {
  67             StructuredSelection structered = ((StructuredSelection) selection);
  68             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
  69                 Object element = iterator.next();
  70                 if (element instanceof TraceDomainComponent) {
  71                     TraceDomainComponent tmpDomain = (TraceDomainComponent) element;
  72                     session = (TraceSessionComponent) tmpDomain.getParent();
  73
  74                     // Add only TraceDomainComponent whose TraceSessionComponent parent is inactive and not destroyed
  75                     if ((session.getSessionState() == TraceSessionState.INACTIVE) && (!session.isDestroyed())) {
  76                         domain = tmpDomain;
  77                     }
  78                 }
  79             }
  80         }
  81
  82         boolean isEnabled = domain != null;
  83
  84         fLock.lock();
  85         try {
  86             fParam = null;
  87             if (isEnabled) {
  88                 fParam = new DomainCommandParameter(session, domain);
  89             }
  90         } finally {
  91             fLock.unlock();
  92         }
  93
  94         return isEnabled;
  95     }
  96
  97
  98 }