org.eclipse.linuxtools.lttng2.control.ui/src/org/eclipse/linuxtools/internal/lttng2/control/ui/views/ControlView.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2013 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  *   Francois Chouinard - Initial API and implementation
  11  *   Bernd Hufmann - Filled with content
  12  *******************************************************************************/
  13
  14 package org.eclipse.linuxtools.internal.lttng2.control.ui.views;
  15
  16 import org.eclipse.core.runtime.IProgressMonitor;
  17 import org.eclipse.core.runtime.IStatus;
  18 import org.eclipse.core.runtime.Status;
  19 import org.eclipse.jface.action.MenuManager;
  20 import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
  21 import org.eclipse.jface.viewers.ISelection;
  22 import org.eclipse.jface.viewers.StructuredSelection;
  23 import org.eclipse.jface.viewers.TreeViewer;
  24 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.ITraceControlComponent;
  25 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.ITraceControlComponentChangedListener;
  26 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceControlContentProvider;
  27 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceControlLabelProvider;
  28 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceControlRoot;
  29 import org.eclipse.rse.core.RSECorePlugin;
  30 import org.eclipse.swt.SWT;
  31 import org.eclipse.swt.widgets.Composite;
  32 import org.eclipse.swt.widgets.Menu;
  33 import org.eclipse.ui.part.ViewPart;
  34 import org.eclipse.ui.progress.UIJob;
  35
  36 /**
  37  * <p>
  38  * View implementation for Trace Control.
  39  * </p>
  40  *
  41  * @author Bernd Hufmann
  42  */
  43 public class ControlView extends ViewPart implements ITraceControlComponentChangedListener {
  44
  45     // ------------------------------------------------------------------------
  46     // Constants
  47     // ------------------------------------------------------------------------
  48
  49     /**
  50      * View ID.
  51      */
  52     public static final String ID = "org.eclipse.linuxtools.internal.lttng2.ui.views.control"; //$NON-NLS-1$
  53
  54     // ------------------------------------------------------------------------
  55     // Attributes
  56     // ------------------------------------------------------------------------
  57
  58     /**
  59      * The tree viewer.
  60      */
  61     private TreeViewer fTreeViewer = null;
  62
  63     /**
  64      * The trace control root node. This provides access to the whole model.
  65      */
  66     private ITraceControlComponent fRoot = null;
  67
  68     // ------------------------------------------------------------------------
  69     // Accessors
  70     // ------------------------------------------------------------------------
  71
  72     /**
  73      * Returns the trace control tree node (model)
  74      *
  75      * @return the trace control tree node (model).
  76      */
  77     public ITraceControlComponent getTraceControlRoot() {
  78         return fRoot;
  79     }
  80
  81     // ------------------------------------------------------------------------
  82     // Operations
  83     // ------------------------------------------------------------------------
  84
  85     @Override
  86     public void createPartControl(Composite parent) {
  87         // Create tree viewer
  88         fTreeViewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
  89         ColumnViewerToolTipSupport.enableFor(fTreeViewer);
  90
  91         fTreeViewer.setContentProvider(new TraceControlContentProvider());
  92         fTreeViewer.setLabelProvider(new TraceControlLabelProvider());
  93
  94         // Create model root
  95         fRoot = new TraceControlRoot();
  96         fRoot.addComponentListener(this);
  97         fTreeViewer.setInput(fRoot);
  98
  99         // Create context menu for the tree viewer
 100         createContextMenu();
 101
 102         getSite().setSelectionProvider(fTreeViewer);
 103
 104         RSECorePlugin.getTheSystemRegistry(); // to load RSE
 105     }
 106
 107     @Override
 108     public void setFocus() {
 109         fTreeViewer.getControl().setFocus();
 110     }
 111
 112     @Override
 113     public void componentAdded(ITraceControlComponent parent, ITraceControlComponent component) {
 114         componentChanged(parent);
 115     }
 116
 117     @Override
 118     public void componentRemoved(ITraceControlComponent parent, ITraceControlComponent component) {
 119         componentChanged(parent);
 120     }
 121
 122     @Override
 123     public void componentChanged(final ITraceControlComponent component) {
 124         if (fTreeViewer.getTree().isDisposed()) {
 125             return;
 126         }
 127
 128         UIJob myJob = new UIJob("Refresh") { //$NON-NLS-1$
 129             @Override
 130             public IStatus runInUIThread(IProgressMonitor monitor) {
 131                 if (fTreeViewer.getTree().isDisposed()) {
 132                     return Status.OK_STATUS;
 133                 }
 134
 135                 fTreeViewer.refresh(component);
 136
 137                 // Change selection needed
 138                 final ISelection sel = fTreeViewer.getSelection();
 139                 fTreeViewer.setSelection(null);
 140                 fTreeViewer.setSelection(sel);
 141
 142                 // Show component that was changed
 143                 fTreeViewer.reveal(component);
 144
 145                 return Status.OK_STATUS;
 146             }
 147         };
 148         myJob.setUser(false);
 149         myJob.setSystem(true);
 150         myJob.schedule();
 151     }
 152
 153     /**
 154      * Sets the selected component in the tree
 155      * @param component - component to select
 156      */
 157     public void setSelection(ITraceControlComponent component) {
 158         ITraceControlComponent[] components = new ITraceControlComponent[1];
 159         components[0] = component;
 160         setSelection(components);
 161     }
 162
 163     /**
 164      * Sets the selected components in the tree
 165      * @param components - array of components to select
 166      */
 167     public void setSelection(ITraceControlComponent[] components) {
 168         final StructuredSelection selection = new StructuredSelection(components);
 169         UIJob myJob = new UIJob("Select") { //$NON-NLS-1$
 170             @Override
 171             public IStatus runInUIThread(IProgressMonitor monitor) {
 172                 fTreeViewer.setSelection(selection);
 173                 return Status.OK_STATUS;
 174             }
 175         };
 176         myJob.setUser(false);
 177         myJob.schedule();
 178     }
 179
 180     // ------------------------------------------------------------------------
 181     // Helper methods
 182     // ------------------------------------------------------------------------
 183     /**
 184      * Creates the context sensitive menu.
 185      */
 186     private void createContextMenu() {
 187         // First we create a menu Manager
 188         final MenuManager menuManager = new MenuManager();
 189         final Menu menu = menuManager.createContextMenu(fTreeViewer.getTree());
 190         // Set the MenuManager
 191         fTreeViewer.getTree().setMenu(menu);
 192         getSite().registerContextMenu(menuManager, fTreeViewer);
 193     }
 194 }