org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/EnableEventOnChannelHandler.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 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.linuxtools.internal.lttng2.ui.views.control.ControlView;
  22 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.LogLevelType;
  23 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.TraceLogLevel;
  24 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.TraceSessionState;
  25 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceChannelComponent;
  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  * <b><u>EnableEventOnChannelHandler</u></b>
  32  * <p>
  33  * Command handler implementation to enable events for a known channel.
  34  * </p>
  35  */
  36 public class EnableEventOnChannelHandler extends BaseEnableEventHandler {
  37
  38     // ------------------------------------------------------------------------
  39     // Attributes
  40     // ------------------------------------------------------------------------
  41
  42     // ------------------------------------------------------------------------
  43     // Operations
  44     // ------------------------------------------------------------------------
  45     /*
  46      * (non-Javadoc)
  47      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseEnableEventHandler#enableEvents(org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.CommandParameter, java.util.List, boolean, org.eclipse.core.runtime.IProgressMonitor)
  48      */
  49     @Override
  50     public void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, IProgressMonitor monitor) throws ExecutionException {
  51         if (param instanceof ChannelCommandParameter) {
  52             ((ChannelCommandParameter)param).getChannel().enableEvents(eventNames, monitor);
  53         }
  54     }
  55
  56     /*
  57      * (non-Javadoc)
  58      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseEnableEventHandler#enableSyscalls(org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.CommandParameter, org.eclipse.core.runtime.IProgressMonitor)
  59      */
  60     @Override
  61     public void enableSyscalls(CommandParameter param, IProgressMonitor monitor) throws ExecutionException {
  62         if (param instanceof ChannelCommandParameter) {
  63             ((ChannelCommandParameter)param).getChannel().enableSyscalls(monitor);
  64         }
  65     }
  66
  67     /*
  68      * (non-Javadoc)
  69      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseEnableEventHandler#enableProbe(org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.CommandParameter, java.lang.String, boolean, java.lang.String, org.eclipse.core.runtime.IProgressMonitor)
  70      */
  71     @Override
  72     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  73         if (param instanceof ChannelCommandParameter) {
  74             ((ChannelCommandParameter)param).getChannel().enableProbe(eventName, isFunction, probe, monitor);
  75         }
  76     }
  77
  78     /*
  79      * (non-Javadoc)
  80      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseEnableEventHandler#enableLogLevel(org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.CommandParameter, java.lang.String, org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.LogLevelType, org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.TraceLogLevel, org.eclipse.core.runtime.IProgressMonitor)
  81      */
  82     @Override
  83     public void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, IProgressMonitor monitor) throws ExecutionException {
  84         if (param instanceof ChannelCommandParameter) {
  85             ((ChannelCommandParameter)param).getChannel().enableLogLevel(eventName, logLevelType, level, monitor);
  86         }
  87     }
  88
  89     /*
  90      * (non-Javadoc)
  91      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseEnableEventHandler#getDomain(org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.CommandParameter)
  92      */
  93     @Override
  94     public TraceDomainComponent getDomain(CommandParameter param) {
  95         if (param instanceof ChannelCommandParameter) {
  96             return (TraceDomainComponent) ((ChannelCommandParameter)param).getChannel().getParent();
  97         }
  98         return null;
  99     }
 100
 101     /*
 102      * (non-Javadoc)
 103      * @see org.eclipse.core.commands.AbstractHandler#isEnabled()
 104      */
 105     @Override
 106     public boolean isEnabled() {
 107         // Get workbench page for the Control View
 108         IWorkbenchPage page = getWorkbenchPage();
 109         if (page == null) {
 110             return false;
 111         }
 112
 113         TraceChannelComponent channel = null;
 114         TraceSessionComponent session = null;
 115         ISelection selection = page.getSelection(ControlView.ID);
 116         if (selection instanceof StructuredSelection) {
 117             StructuredSelection structered = ((StructuredSelection) selection);
 118             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
 119                 Object element = (Object) iterator.next();
 120                 if (element instanceof TraceChannelComponent) {
 121                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
 122                     TraceChannelComponent tmpChannel = (TraceChannelComponent) element;
 123                     session = tmpChannel.getSession();
 124                     if(session.getSessionState() == TraceSessionState.INACTIVE && !session.isDestroyed()) {
 125                         channel = tmpChannel;
 126                     }
 127                 }
 128             }
 129         }
 130
 131         boolean isEnabled = (channel != null);
 132         fLock.lock();
 133         try {
 134             fParam = null;
 135             if(isEnabled) {
 136                 fParam = new ChannelCommandParameter(session, channel);
 137             }
 138         } finally {
 139             fLock.unlock();
 140         }
 141         return isEnabled;
 142     }
 143 }
 144