org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/EnableEventOnDomainHandler.java

   1 /**********************************************************************
   2  * Copyright (c) 2012, 2013 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.linuxtools.internal.lttng2.ui.views.control.handlers;
  14
  15 import java.util.Iterator;
  16 import java.util.List;
  17
  18 import org.eclipse.core.commands.ExecutionException;
  19 import org.eclipse.core.runtime.IProgressMonitor;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.StructuredSelection;
  22 import org.eclipse.linuxtools.internal.lttng2.core.control.model.LogLevelType;
  23 import org.eclipse.linuxtools.internal.lttng2.core.control.model.TraceLogLevel;
  24 import org.eclipse.linuxtools.internal.lttng2.core.control.model.TraceSessionState;
  25 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView;
  26 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceDomainComponent;
  27 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionComponent;
  28 import org.eclipse.ui.IWorkbenchPage;
  29
  30 /**
  31  * <p>
  32  * Command handler implementation to enable events for a known domain and default channel 'channel0'
  33  * (which will be created if doesn't exist).
  34  * </p>
  35  *
  36  * @author Bernd Hufmann
  37  */
  38 public class EnableEventOnDomainHandler extends BaseEnableEventHandler {
  39
  40     // ------------------------------------------------------------------------
  41     // Operations
  42     // ------------------------------------------------------------------------
  43
  44     @Override
  45     public void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, String filterExression, IProgressMonitor monitor) throws ExecutionException {
  46         if (param instanceof DomainCommandParameter) {
  47             ((DomainCommandParameter)param).getDomain().enableEvents(eventNames, monitor);
  48         }
  49     }
  50
  51     @Override
  52     public void enableSyscalls(CommandParameter param, IProgressMonitor monitor) throws ExecutionException {
  53         if (param instanceof DomainCommandParameter) {
  54             ((DomainCommandParameter)param).getDomain().enableSyscalls(monitor);
  55         }
  56     }
  57
  58     @Override
  59     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  60         if (param instanceof DomainCommandParameter) {
  61             ((DomainCommandParameter)param).getDomain().enableProbe(eventName, isFunction, probe, monitor);
  62         }
  63     }
  64
  65     @Override
  66     public void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, String filterExression, IProgressMonitor monitor) throws ExecutionException {
  67         if (param instanceof DomainCommandParameter) {
  68             ((DomainCommandParameter)param).getDomain().enableLogLevel(eventName, logLevelType, level, filterExression, monitor);
  69         }
  70     }
  71
  72     @Override
  73     public TraceDomainComponent getDomain(CommandParameter param) {
  74         if (param instanceof DomainCommandParameter) {
  75             return ((DomainCommandParameter)param).getDomain();
  76         }
  77         return null;
  78     }
  79
  80     @Override
  81     public boolean isEnabled() {
  82         // Get workbench page for the Control View
  83         IWorkbenchPage page = getWorkbenchPage();
  84         if (page == null) {
  85             return false;
  86         }
  87
  88         TraceDomainComponent domain = null;
  89         TraceSessionComponent session = null;
  90         ISelection selection = page.getSelection(ControlView.ID);
  91         if (selection instanceof StructuredSelection) {
  92             StructuredSelection structered = ((StructuredSelection) selection);
  93             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
  94                 Object element = iterator.next();
  95                 if (element instanceof TraceDomainComponent) {
  96                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
  97                     TraceDomainComponent tmpDomain = (TraceDomainComponent) element;
  98                     session = tmpDomain.getSession();
  99                     if(session.getSessionState() == TraceSessionState.INACTIVE && !session.isDestroyed()) {
 100                         domain = tmpDomain;
 101                     }
 102                 }
 103             }
 104         }
 105
 106         boolean isEnabled = (domain != null);
 107         fLock.lock();
 108         try {
 109             fParam = null;
 110             if(isEnabled) {
 111                 fParam = new DomainCommandParameter(session, domain);
 112             }
 113         } finally {
 114             fLock.unlock();
 115         }
 116         return isEnabled;
 117     }
 118 }