org.eclipse.linuxtools.lttng2.control.ui/src/org/eclipse/linuxtools/internal/lttng2/control/ui/views/handlers/EnableEventOnChannelHandler.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.control.ui.views.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.control.core.model.LogLevelType;
  23 import org.eclipse.linuxtools.internal.lttng2.control.core.model.TraceLogLevel;
  24 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.ControlView;
  25 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceChannelComponent;
  26 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  27 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceSessionComponent;
  28 import org.eclipse.ui.IWorkbenchPage;
  29
  30 /**
  31  * <p>
  32  * Command handler implementation to enable events for a known channel.
  33  * </p>
  34  *
  35  * @author Bernd Hufmann
  36  */
  37 public class EnableEventOnChannelHandler extends BaseEnableEventHandler {
  38
  39     // ------------------------------------------------------------------------
  40     // Attributes
  41     // ------------------------------------------------------------------------
  42
  43     // ------------------------------------------------------------------------
  44     // Operations
  45     // ------------------------------------------------------------------------
  46
  47     @Override
  48     public void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, String filterExression, IProgressMonitor monitor) throws ExecutionException {
  49         if (param instanceof ChannelCommandParameter) {
  50             ((ChannelCommandParameter)param).getChannel().enableEvents(eventNames, filterExression, monitor);
  51         }
  52     }
  53
  54     @Override
  55     public void enableSyscalls(CommandParameter param, IProgressMonitor monitor) throws ExecutionException {
  56         if (param instanceof ChannelCommandParameter) {
  57             ((ChannelCommandParameter)param).getChannel().enableSyscalls(monitor);
  58         }
  59     }
  60
  61     @Override
  62     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  63         if (param instanceof ChannelCommandParameter) {
  64             ((ChannelCommandParameter)param).getChannel().enableProbe(eventName, isFunction, probe, monitor);
  65         }
  66     }
  67
  68     @Override
  69     public void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, String filterExression, IProgressMonitor monitor) throws ExecutionException {
  70         if (param instanceof ChannelCommandParameter) {
  71             ((ChannelCommandParameter)param).getChannel().enableLogLevel(eventName, logLevelType, level, filterExression, monitor);
  72         }
  73     }
  74
  75     @Override
  76     public TraceDomainComponent getDomain(CommandParameter param) {
  77         if (param instanceof ChannelCommandParameter) {
  78             return (TraceDomainComponent) ((ChannelCommandParameter)param).getChannel().getParent();
  79         }
  80         return null;
  81     }
  82
  83     @Override
  84     public boolean isEnabled() {
  85         // Get workbench page for the Control View
  86         IWorkbenchPage page = getWorkbenchPage();
  87         if (page == null) {
  88             return false;
  89         }
  90
  91         TraceChannelComponent channel = null;
  92         TraceSessionComponent session = null;
  93         ISelection selection = page.getSelection(ControlView.ID);
  94         if (selection instanceof StructuredSelection) {
  95             StructuredSelection structered = ((StructuredSelection) selection);
  96             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
  97                 Object element = iterator.next();
  98                 if (element instanceof TraceChannelComponent) {
  99                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
 100                     TraceChannelComponent tmpChannel = (TraceChannelComponent) element;
 101                     session = tmpChannel.getSession();
 102                     if(!session.isDestroyed()) {
 103                         channel = tmpChannel;
 104                     }
 105                 }
 106             }
 107         }
 108
 109         boolean isEnabled = (channel != null);
 110         fLock.lock();
 111         try {
 112             fParam = null;
 113             if(isEnabled) {
 114                 fParam = new ChannelCommandParameter(session, channel);
 115             }
 116         } finally {
 117             fLock.unlock();
 118         }
 119         return isEnabled;
 120     }
 121 }
 122