org.eclipse.linuxtools.lttng2.ui/src/org/eclipse/linuxtools/internal/lttng2/ui/views/control/TraceControlContentProvider.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;
  13
  14 import org.eclipse.jface.viewers.ITreeContentProvider;
  15 import org.eclipse.jface.viewers.Viewer;
  16 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.ITraceControlComponent;
  17
  18 /**
  19  * <b><u>TraceControlContentProvider</u></b>
  20  * <p>
  21  * Tree content provider implementation for trace control view.
  22  * </p>
  23  */
  24 public class TraceControlContentProvider implements ITreeContentProvider {
  25     // ------------------------------------------------------------------------
  26     // Operations
  27     // ------------------------------------------------------------------------
  28     /*
  29      * (non-Javadoc)
  30      * @see org.eclipse.jface.viewers.IContentProvider#dispose()
  31      */
  32     @Override
  33     public void dispose() {
  34     }
  35
  36     /*
  37      * (non-Javadoc)
  38      * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
  39      */
  40     @Override
  41     public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  42     }
  43
  44     /*
  45      * (non-Javadoc)
  46      * @see org.eclipse.jface.viewers.ITreeContentProvider#getElements(java.lang.Object)
  47      */
  48     @Override
  49     public Object[] getElements(Object inputElement) {
  50         return getChildren(inputElement);
  51     }
  52
  53     /*
  54      * (non-Javadoc)
  55      * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
  56      */
  57     @Override
  58     public Object[] getChildren(Object parentElement) {
  59
  60         if (parentElement instanceof ITraceControlComponent) {
  61             return ((ITraceControlComponent)parentElement).getChildren();
  62         }
  63         return new Object[0];
  64     }
  65
  66     /*
  67      * (non-Javadoc)
  68      * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
  69      */
  70     @Override
  71     public Object getParent(Object element) {
  72         if (element instanceof ITraceControlComponent) {
  73             return ((ITraceControlComponent)element).getParent();
  74         }
  75         return null;
  76     }
  77
  78     /*
  79      * (non-Javadoc)
  80      * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
  81      */
  82     @Override
  83     public boolean hasChildren(Object element) {
  84         if (element instanceof ITraceControlComponent) {
  85             return ((ITraceControlComponent)element).hasChildren();
  86         }
  87         return false;
  88     }
  89 }