org.eclipse.tracecompass.lttng2.control.ui/src/org/eclipse/linuxtools/internal/lttng2/control/ui/views/model/impl/TraceControlContentProvider.java

   1 /**********************************************************************
   2  * Copyright (c) 2012, 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  *   Bernd Hufmann - Initial API and implementation
  11  **********************************************************************/
  12 package org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl;
  13
  14 import org.eclipse.jface.viewers.ITreeContentProvider;
  15 import org.eclipse.jface.viewers.Viewer;
  16 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.ITraceControlComponent;
  17
  18 /**
  19  * <p>
  20  * Tree content provider implementation for trace control view.
  21  * </p>
  22  *
  23  * @author Bernd Hufmann
  24  */
  25 public class TraceControlContentProvider implements ITreeContentProvider {
  26
  27     // ------------------------------------------------------------------------
  28     // Operations
  29     // ------------------------------------------------------------------------
  30
  31     @Override
  32     public void dispose() {
  33     }
  34
  35     @Override
  36     public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  37     }
  38
  39     @Override
  40     public Object[] getElements(Object inputElement) {
  41         return getChildren(inputElement);
  42     }
  43
  44     @Override
  45     public Object[] getChildren(Object parentElement) {
  46
  47         if (parentElement instanceof ITraceControlComponent) {
  48             return ((ITraceControlComponent)parentElement).getChildren();
  49         }
  50         return new Object[0];
  51     }
  52
  53     @Override
  54     public Object getParent(Object element) {
  55         if (element instanceof ITraceControlComponent) {
  56             return ((ITraceControlComponent)element).getParent();
  57         }
  58         return null;
  59     }
  60
  61     @Override
  62     public boolean hasChildren(Object element) {
  63         if (element instanceof ITraceControlComponent) {
  64             return ((ITraceControlComponent)element).hasChildren();
  65         }
  66         return false;
  67     }
  68 }