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Viewing changes to lttng/org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/EnableEventOnChannelHandler.java

  • Committer: Package Import Robot
  • Author(s): Jakub Adam
  • Date: 2012-06-29 12:07:30 UTC
  • Revision ID: package-import@ubuntu.com-20120629120730-bfri1xys1i71dpn6
Tags: upstream-1.0.0
Import upstream version 1.0.0

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lttng/org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/EnableEventOnChannelHandler.java
 
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/**********************************************************************
 
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 * Copyright (c) 2012 Ericsson
 
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 * 
 
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 * All rights reserved. This program and the accompanying materials are
 
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 * made available under the terms of the Eclipse Public License v1.0 which
 
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 * accompanies this distribution, and is available at
 
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 * http://www.eclipse.org/legal/epl-v10.html
 
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 * 
 
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 * Contributors: 
 
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 *   Bernd Hufmann - Initial API and implementation
 
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 **********************************************************************/
 
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package org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers;
 
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import java.util.Iterator;
 
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import java.util.List;
 
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import org.eclipse.core.commands.ExecutionException;
 
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import org.eclipse.core.runtime.IProgressMonitor;
 
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import org.eclipse.jface.viewers.ISelection;
 
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import org.eclipse.jface.viewers.StructuredSelection;
 
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import org.eclipse.linuxtools.internal.lttng2.core.control.model.LogLevelType;
 
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import org.eclipse.linuxtools.internal.lttng2.core.control.model.TraceLogLevel;
 
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import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView;
 
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import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceChannelComponent;
 
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import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceDomainComponent;
 
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import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionComponent;
 
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import org.eclipse.ui.IWorkbenchPage;
 
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/**
 
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 * <p>
 
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 * Command handler implementation to enable events for a known channel.
 
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 * </p>
 
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 * 
 
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 * @author Bernd Hufmann
 
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 */
 
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public class EnableEventOnChannelHandler extends BaseEnableEventHandler {
 
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    // ------------------------------------------------------------------------
 
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    // Attributes
 
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    // ------------------------------------------------------------------------
 
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    // ------------------------------------------------------------------------
 
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    // Operations
 
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    // ------------------------------------------------------------------------
 
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    /*
 
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     * (non-Javadoc)
 
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     * @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)
 
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     */
 
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    @Override
 
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    public void enableEvents(CommandParameter param, List<String> eventNames, boolean isKernel, IProgressMonitor monitor) throws ExecutionException {
 
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        if (param instanceof ChannelCommandParameter) {
 
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            ((ChannelCommandParameter)param).getChannel().enableEvents(eventNames, monitor);
 
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        }
 
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    }
 
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    /*
 
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     * (non-Javadoc)
 
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     * @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)
 
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     */
 
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    @Override
 
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    public void enableSyscalls(CommandParameter param, IProgressMonitor monitor) throws ExecutionException {
 
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        if (param instanceof ChannelCommandParameter) {
 
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            ((ChannelCommandParameter)param).getChannel().enableSyscalls(monitor);
 
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        }
 
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    }
 
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    /*
 
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     * (non-Javadoc)
 
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     * @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)
 
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     */
 
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    @Override
 
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    public void enableProbe(CommandParameter param, String eventName, boolean isFunction, String probe, IProgressMonitor monitor) throws ExecutionException {
 
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        if (param instanceof ChannelCommandParameter) {
 
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            ((ChannelCommandParameter)param).getChannel().enableProbe(eventName, isFunction, probe, monitor);
 
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        }
 
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    }
 
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    /*
 
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     * (non-Javadoc)
 
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     * @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)
 
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     */
 
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    @Override
 
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    public void enableLogLevel(CommandParameter param, String eventName, LogLevelType logLevelType, TraceLogLevel level, IProgressMonitor monitor) throws ExecutionException {
 
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        if (param instanceof ChannelCommandParameter) {
 
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            ((ChannelCommandParameter)param).getChannel().enableLogLevel(eventName, logLevelType, level, monitor);
 
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        }
 
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    }
 
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    /*
 
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     * (non-Javadoc)
 
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     * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.BaseEnableEventHandler#getDomain(org.eclipse.linuxtools.internal.lttng2.ui.views.control.handlers.CommandParameter)
 
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     */
 
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    @Override
 
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    public TraceDomainComponent getDomain(CommandParameter param) {
 
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        if (param instanceof ChannelCommandParameter) {
 
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            return (TraceDomainComponent) ((ChannelCommandParameter)param).getChannel().getParent();
 
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        } 
 
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        return null;
 
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    }
 
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    /*
 
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     * (non-Javadoc)
 
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     * @see org.eclipse.core.commands.AbstractHandler#isEnabled()
 
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     */
 
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    @Override
 
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    public boolean isEnabled() {
 
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        // Get workbench page for the Control View
 
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        IWorkbenchPage page = getWorkbenchPage();
 
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        if (page == null) {
 
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            return false;
 
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        }
 
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        TraceChannelComponent channel = null;
 
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        TraceSessionComponent session = null;
 
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        ISelection selection = page.getSelection(ControlView.ID);
 
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        if (selection instanceof StructuredSelection) {
 
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            StructuredSelection structered = ((StructuredSelection) selection);
 
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            for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
 
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                Object element = (Object) iterator.next();
 
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                if (element instanceof TraceChannelComponent) {
 
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                    // Add only if corresponding TraceSessionComponents is inactive and not destroyed
 
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                    TraceChannelComponent tmpChannel = (TraceChannelComponent) element; 
 
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                    session = tmpChannel.getSession();
 
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                    if(!session.isDestroyed()) {
 
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                        channel = tmpChannel;
 
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                    }
 
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                }
 
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            }
 
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        }
 
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        boolean isEnabled = (channel != null);
 
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        fLock.lock();
 
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        try {
 
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            fParam = null;
 
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            if(isEnabled) {
 
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                fParam = new ChannelCommandParameter(session, channel);
 
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            }
 
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        } finally {
 
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            fLock.unlock();
 
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        }
 
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        return isEnabled;
 
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    }
 
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}
 
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