Examples of org.eclipse.swt.widgets.Tree.indexOf()

org.eclipse.swt.widgets.Tree.indexOf()
Searches the receiver's list starting at the first item (index 0) until an item is found that is equal to the argument, and returns the index of that item. If no item is found, returns -1. @param item the search item @return the index of the item @exception IllegalArgumentException
- ERROR_NULL_ARGUMENT - if the item is null
- ERROR_INVALID_ARGUMENT - if the item has been disposed
@exception SWTException
- ERROR_WIDGET_DISPOSED - if the receiver has been disposed
- ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
@since 3.1

    
    int nextIndex;
    int totalItems;
    
    if( parentItem == null ) {
      nextIndex = tree.indexOf(item) + 1;
      totalItems = tree.getItemCount();
    } else {
      nextIndex = parentItem.indexOf(item) + 1;
      totalItems = parentItem.getItemCount();
    }

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    if (fFeedView.isTableViewerVisible()) {
      Tree tree = fTableViewer.getTree();
      TreeItem topItem = tree.getTopItem();
      int indexOfTopItem = 0;
      if (topItem != null)
        indexOfTopItem = tree.indexOf(topItem);


      tree.setRedraw(false);
      try {
        fTableViewer.add(fTableViewer.getInput(), addedNews.toArray());
        if (topItem != null && indexOfTopItem != 0)

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      return null;
    }


    /* Item is Root-Leveld */
    Tree tree = fItem.getParent();
    int index = tree.indexOf(fItem);


    if (tree.getItemCount() > index + 1)
      return new WidgetTreeNode(tree.getItem(index + 1), fViewer);


    return null;

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      return null;
    }


    /* Item is Root-Leveld */
    Tree tree = fItem.getParent();
    int index = tree.indexOf(fItem);


    if (index > 0)
      return new WidgetTreeNode(tree.getItem(index - 1), fViewer);


    return null;

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    /* Check if Last Selected Item is an Entity Group */
    TreeItem lastSelectedItem = oldSelection[oldSelection.length - 1];
    if (lastSelectedItem.getData() instanceof EntityGroup) {


      /* Given this group gets deleted, use the next or previous entity group as input for the WidgetTreeNode below */
      int indexOfEntityGroup = tree.indexOf(lastSelectedItem);
      if (tree.getItemCount() > indexOfEntityGroup + 1) //Try Next
        lastSelectedItem = tree.getItem(indexOfEntityGroup + 1);
      else if (indexOfEntityGroup > 0) //Try Previous
        lastSelectedItem = tree.getItem(indexOfEntityGroup - 1);
    }

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