org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/EnableEventOnSessionHandler.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.core.control.model.TraceSessionState;
  24 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView;
  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  * <p>
  31  * Command handler implementation to enable events for a known session and default channel 'channel0'
  32  * (which will be created if doesn't exist).
  33  * </p>
  34  *
  35  * @author Bernd Hufmann
  36  */
  37 public class EnableEventOnSessionHandler extends BaseEnableEventHandler {
  38
  39     // ------------------------------------------------------------------------
  40     // Attributes
  41     // ------------------------------------------------------------------------
  42
  43     //-------------------------------------------------------------------------
  44     // Operations
  45     // ------------------------------------------------------------------------
  46     /*
  47      * (non-Javadoc)
  48      * @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, java.lang.String, org.eclipse.core.runtime.IProgressMonitor)
  49      */
  50     @Override
  51     public void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, String filterExpression, IProgressMonitor monitor) throws ExecutionException {
  52         param.getSession().enableEvents(eventNames, isKernel, filterExpression, monitor);
  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         param.getSession().enableSyscalls(monitor);
  62     }
  63
  64     /*
  65      * (non-Javadoc)
  66      * @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)
  67      */
  68     @Override
  69     public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
  70         param.getSession().enableProbe(eventName, isFunction, probe, monitor);
  71     }
  72
  73     /*
  74      * (non-Javadoc)
  75      * @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.core.control.model.LogLevelType, org.eclipse.linuxtools.internal.lttng2.core.control.model.TraceLogLevel, java.lang.String, org.eclipse.core.runtime.IProgressMonitor)
  76      */
  77     @Override
  78     public void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, String filterExpression, IProgressMonitor monitor) throws ExecutionException {
  79         param.getSession().enableLogLevel(eventName, logLevelType, level, filterExpression, monitor);
  80     }
  81
  82     /*
  83      * (non-Javadoc)
  84      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseEnableEventHandler#getDomain(org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.CommandParameter)
  85      */
  86     @Override
  87     public TraceDomainComponent getDomain(CommandParameter param) {
  88         return null;
  89     }
  90
  91     /*
  92      * (non-Javadoc)
  93      * @see org.eclipse.core.commands.AbstractHandler#isEnabled()
  94      */
  95     @Override
  96     public boolean isEnabled() {
  97         // Get workbench page for the Control View
  98         IWorkbenchPage page = getWorkbenchPage();
  99         if (page == null) {
 100             return false;
 101         }
 102
 103         TraceSessionComponent session = null;
 104         // Check if one session is selected
 105         ISelection selection = page.getSelection(ControlView.ID);
 106         if (selection instanceof StructuredSelection) {
 107             StructuredSelection structered = ((StructuredSelection) selection);
 108             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
 109                 Object element = iterator.next();
 110                 if (element instanceof TraceSessionComponent) {
 111                     // Add only if corresponding TraceSessionComponents is inactive and not destroyed
 112                     TraceSessionComponent tmpSession = (TraceSessionComponent) element;
 113                     if(tmpSession.getSessionState() == TraceSessionState.INACTIVE && !tmpSession.isDestroyed()) {
 114                         session = tmpSession;
 115                     }
 116                 }
 117             }
 118         }
 119         boolean isEnabled = (session != null);
 120         fLock.lock();
 121         try {
 122             fParam = null;
 123             if(isEnabled) {
 124                 fParam = new CommandParameter(session);
 125             }
 126         } finally {
 127             fLock.unlock();
 128         }
 129         return isEnabled;
 130     }
 131 }