org.eclipse.tracecompass.lttng2.control.ui/src/org/eclipse/tracecompass/internal/lttng2/control/ui/views/handlers/NewConnectionHandler.java

   1 /**********************************************************************
   2  * Copyright (c) 2012, 2014 Ericsson and others
   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  *   Anna Dushistova(Montavista) - [382684] Allow reusing already defined connections that have Files and Shells subsystems
  12  *   Markus Schorn - Bug 448058: Use org.eclipse.remote in favor of RSE
  13  **********************************************************************/
  14 package org.eclipse.tracecompass.internal.lttng2.control.ui.views.handlers;
  15
  16 import org.eclipse.core.commands.ExecutionEvent;
  17 import org.eclipse.core.commands.ExecutionException;
  18 import org.eclipse.jface.window.Window;
  19 import org.eclipse.remote.core.IRemoteConnection;
  20 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.ControlView;
  21 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.dialogs.INewConnectionDialog;
  22 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.dialogs.TraceControlDialogFactory;
  23 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.ITraceControlComponent;
  24 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TargetNodeComponent;
  25 import org.eclipse.ui.IWorkbenchPage;
  26 import org.eclipse.ui.IWorkbenchPart;
  27 import org.eclipse.ui.IWorkbenchWindow;
  28 import org.eclipse.ui.PlatformUI;
  29
  30 /**
  31  * <p>
  32  * Command handler for creation new connection for trace control.
  33  * </p>
  34  *
  35  * @author Bernd Hufmann
  36  */
  37 public class NewConnectionHandler extends BaseControlViewHandler {
  38
  39     // ------------------------------------------------------------------------
  40     // Attributes
  41     // ------------------------------------------------------------------------
  42
  43     /**
  44      * The parent trace control component the new node will be added to.
  45      */
  46     private ITraceControlComponent fRoot = null;
  47
  48     @Override
  49     public Object execute(ExecutionEvent event) throws ExecutionException {
  50         assert (fRoot != null);
  51
  52         IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  53         if (window == null) {
  54             return false;
  55         }
  56
  57         // Open dialog box for the node name and address
  58         final INewConnectionDialog dialog = TraceControlDialogFactory.getInstance().getNewConnectionDialog();
  59
  60         if (dialog.open() != Window.OK) {
  61             return null;
  62         }
  63
  64         IRemoteConnection host = dialog.getConnection();
  65         if (host != null) {
  66             fLock.lock();
  67             try {
  68                 // successful creation of host
  69                 TargetNodeComponent node = null;
  70                 if (!fRoot.containsChild(host.getName())) {
  71                     node = new TargetNodeComponent(host.getName(), fRoot, host);
  72                     fRoot.addChild(node);
  73                 } else {
  74                     node = (TargetNodeComponent)fRoot.getChild(host.getName());
  75                 }
  76
  77                 node.connect();
  78             } finally {
  79                 fLock.unlock();
  80             }
  81         }
  82         return null;
  83     }
  84
  85     @Override
  86     public boolean isEnabled() {
  87
  88         // Get workbench page for the Control View
  89         IWorkbenchPage page = getWorkbenchPage();
  90         if (page == null) {
  91             return false;
  92         }
  93
  94         ITraceControlComponent root = null;
  95
  96         // no need to verify part because it has been already done in getWorkbenchPage()
  97         IWorkbenchPart part = page.getActivePart();
  98         root = ((ControlView) part).getTraceControlRoot();
  99
 100         boolean isEnabled = root != null;
 101
 102         fLock.lock();
 103         try {
 104             fRoot = null;
 105             if (isEnabled) {
 106                 fRoot = root;
 107             }
 108         } finally {
 109             fLock.unlock();
 110         }
 111
 112         return isEnabled;
 113     }
 114 }