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.core.control.model.LogLevelType;
  22 import org.eclipse.linuxtools.internal.lttng2.core.control.model.TraceLogLevel;
  23 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView;
  24 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceChannelComponent;
  25 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceDomainComponent;
  26 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionComponent;
  27 import org.eclipse.ui.IWorkbenchPage;
  28
  29 /**
  30  * <b><u>EnableEventOnChannelHandler</u></b>
  31  * <p>
  32  * Command handler implementation to enable events for a known channel.
  33  * </p>
  34  */
  35 public class EnableEventOnChannelHandler extends BaseEnableEventHandler {
  36
  37     // ------------------------------------------------------------------------
  38     // Attributes
  39     // ------------------------------------------------------------------------
  40
  41     // ------------------------------------------------------------------------
  42     // Operations
  43     // ------------------------------------------------------------------------
  44     /*
  45      * (non-Javadoc)
  46      * @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)
  47      */
  48     @Override
  49     public void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, IProgressMonitor monitor) throws ExecutionException {
  50         if (param instanceof ChannelCommandParameter) {
  51             ((ChannelCommandParameter)param).getChannel().enableEvents(eventNames, monitor);
  52         }
  53     }
  54
  55     /*
  56      * (non-Javadoc)
  57      * @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)
  58      */
  59     @Override
  60     public void enableSyscalls(CommandParameter param, IProgressMonitor monitor) throws ExecutionException {
  61         if (param instanceof ChannelCommandParameter) {
  62             ((ChannelCommandParameter)param).getChannel().enableSyscalls(monitor);
  63         }
  64     }
  65
  66     /*
  67      * (non-Javadoc)
  68      * @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)
  69      */
  70     @Override
  71     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  72         if (param instanceof ChannelCommandParameter) {
  73             ((ChannelCommandParameter)param).getChannel().enableProbe(eventName, isFunction, probe, monitor);
  74         }
  75     }
  76
  77     /*
  78      * (non-Javadoc)
  79      * @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)
  80      */
  81     @Override
  82     public void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, IProgressMonitor monitor) throws ExecutionException {
  83         if (param instanceof ChannelCommandParameter) {
  84             ((ChannelCommandParameter)param).getChannel().enableLogLevel(eventName, logLevelType, level, monitor);
  85         }
  86     }
  87
  88     /*
  89      * (non-Javadoc)
  90      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseEnableEventHandler#getDomain(org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.CommandParameter)
  91      */
  92     @Override
  93     public TraceDomainComponent getDomain(CommandParameter param) {
  94         if (param instanceof ChannelCommandParameter) {
  95             return (TraceDomainComponent) ((ChannelCommandParameter)param).getChannel().getParent();
  96         }
  97         return null;
  98     }
  99
 100     /*
 101      * (non-Javadoc)
 102      * @see org.eclipse.core.commands.AbstractHandler#isEnabled()
 103      */
 104     @Override
 105     public boolean isEnabled() {
 106         // Get workbench page for the Control View
 107         IWorkbenchPage page = getWorkbenchPage();
 108         if (page == null) {
 109             return false;
 110         }
 111
 112         TraceChannelComponent channel = null;
 113         TraceSessionComponent session = null;
 114         ISelection selection = page.getSelection(ControlView.ID);
 115         if (selection instanceof StructuredSelection) {
 116             StructuredSelection structered = ((StructuredSelection) selection);
 117             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
 118                 Object element = (Object) iterator.next();
 119                 if (element instanceof TraceChannelComponent) {
 120                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
 121                     TraceChannelComponent tmpChannel = (TraceChannelComponent) element;
 122                     session = tmpChannel.getSession();
 123                     if(!session.isDestroyed()) {
 124                         channel = tmpChannel;
 125                     }
 126                 }
 127             }
 128         }
 129
 130         boolean isEnabled = (channel != null);
 131         fLock.lock();
 132         try {
 133             fParam = null;
 134             if(isEnabled) {
 135                 fParam = new ChannelCommandParameter(session, channel);
 136             }
 137         } finally {
 138             fLock.unlock();
 139         }
 140         return isEnabled;
 141     }
 142 }
 143