org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/handlers/CreateChannelOnDomainHandler.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.ArrayList;
  15 import java.util.Iterator;
  16 import java.util.List;
  17
  18 import org.eclipse.core.commands.ExecutionEvent;
  19 import org.eclipse.core.commands.ExecutionException;
  20 import org.eclipse.core.runtime.IProgressMonitor;
  21 import org.eclipse.core.runtime.IStatus;
  22 import org.eclipse.core.runtime.Status;
  23 import org.eclipse.core.runtime.jobs.Job;
  24 import org.eclipse.jface.viewers.ISelection;
  25 import org.eclipse.jface.viewers.StructuredSelection;
  26 import org.eclipse.jface.window.Window;
  27 import org.eclipse.linuxtools.internal.lttng2.ui.Activator;
  28 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.ControlView;
  29 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.Messages;
  30 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.ICreateChannelDialog;
  31 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.TraceControlDialogFactory;
  32 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.TraceSessionState;
  33 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceDomainComponent;
  34 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionComponent;
  35 import org.eclipse.ui.IWorkbenchPage;
  36
  37 /**
  38  * <b><u>CreateChannelOnDomainHandler</u></b>
  39  * <p>
  40  * Command handler implementation to create a trace channel for known domain.
  41  * </p>
  42  */
  43 public class CreateChannelOnDomainHandler extends BaseControlViewHandler {
  44
  45     // ------------------------------------------------------------------------
  46     // Attributes
  47     // ------------------------------------------------------------------------
  48     /**
  49      * The the domain component the command is to be executed on.
  50      */
  51     private TraceDomainComponent fDomain;
  52
  53     // ------------------------------------------------------------------------
  54     // Operations
  55     // ------------------------------------------------------------------------
  56     /*
  57      * (non-Javadoc)
  58      * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  59      */
  60     @Override
  61     public Object execute(ExecutionEvent event) throws ExecutionException {
  62
  63         // Get channel information from user
  64         final ICreateChannelDialog dialog = TraceControlDialogFactory.getInstance().getCreateChannelDialog();
  65         dialog.setDomainComponent(fDomain);
  66
  67         if (dialog.open() != Window.OK) {
  68             return null;
  69         }
  70
  71         Job job = new Job(Messages.TraceControl_ChangeChannelStateJob) {
  72             @Override
  73             protected IStatus run(IProgressMonitor monitor) {
  74                 String errorString = null;
  75
  76                 List<String> channelNames = new ArrayList<String>();
  77                 channelNames.add(dialog.getChannelInfo().getName());
  78
  79                 try {
  80                     fDomain.enableChannels(channelNames, dialog.getChannelInfo(), monitor);
  81                 } catch (ExecutionException e) {
  82                     if (errorString == null) {
  83                         errorString = new String();
  84                     }
  85                     errorString += e.toString() + "\n"; //$NON-NLS-1$
  86                 }
  87
  88                 // get session configuration in all cases
  89                 try {
  90                     fDomain.getConfigurationFromNode(monitor);
  91                 } catch (ExecutionException e) {
  92                     if (errorString == null) {
  93                         errorString = new String();
  94                     }
  95                     errorString += Messages.TraceControl_ListSessionFailure + ": " + e.toString();  //$NON-NLS-1$
  96                 }
  97
  98                 if (errorString != null) {
  99                     return new Status(Status.ERROR, Activator.PLUGIN_ID, errorString);
 100                 }
 101                 return Status.OK_STATUS;
 102             }
 103         };
 104
 105         job.setUser(true);
 106         job.schedule();
 107
 108         return null;
 109     }
 110
 111     /*
 112      * (non-Javadoc)
 113      * @see org.eclipse.core.commands.AbstractHandler#isEnabled()
 114      */
 115     @Override
 116     public boolean isEnabled() {
 117
 118         // Get workbench page for the Control View
 119         IWorkbenchPage page = getWorkbenchPage();
 120         if (page == null) {
 121             return false;
 122         }
 123         fDomain = null;
 124
 125         // Check if one domain is selected
 126         ISelection selection = page.getSelection(ControlView.ID);
 127         if (selection instanceof StructuredSelection) {
 128             StructuredSelection structered = ((StructuredSelection) selection);
 129             for (Iterator<?> iterator = structered.iterator(); iterator.hasNext();) {
 130                 Object element = (Object) iterator.next();
 131                 if (element instanceof TraceDomainComponent) {
 132                     TraceDomainComponent domain = (TraceDomainComponent) element;
 133                     TraceSessionComponent session = (TraceSessionComponent) domain.getParent();
 134                     // Add only TraceDomainComponent whose TraceSessionComponent parent is inactive and not destroyed
 135                     if ((session.getSessionState() == TraceSessionState.INACTIVE) && (!session.isDestroyed())) {
 136                         fDomain = domain;
 137                     }
 138                 }
 139             }
 140         }
 141         return fDomain != null;
 142     }
 143 }