Bug 111631 [Viewers] TreeViewer needs more TableViewer API
As the TreeViewer is meant to replace the TableTreeViewer we need to add some of the API that the TableViewer had to it so that it can be used like a table. public void insert(Object element, int position) public void add(Object[] objects) Both need to be added.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
}
		return false;
    }
    
    /**
     * Return whether the given element is expandable.
     * @param item the tree item for the element
     * @param parentPath the parent path if it is knwon or <code>null</code> if it needs to be determines
     * @param element the element
     * @return whether the given element is expandable
     */
    private boolean isExpandable(Item item, TreePath parentPath, Object element) {
    	if (isTreePathContentProvider()) {
    		TreePath path;
    		if (parentPath != null) {
    			path = parentPath.createChildPath(element);
    		} else {
    			path = getTreePathFromItem(item);
    		}
    		ITreePathContentProvider cp = (ITreePathContentProvider) getContentProvider();
    		return cp != null && cp.hasChildren(path);
    	}
    	return isExpandable(element);
    }
    
    
    protected void labelProviderChanged() {
        
        Control tree = getControl();
        tree.setRedraw(false);