/**
* Calls the given treeNode.
*
* @param treeNode the <tt>TreeNode</tt> to call
*/
private void call(TreeNode treeNode, JButton button, boolean isVideo, boolean isDesktopSharing) {
if (!(treeNode instanceof ContactNode)) return;
UIContact contactDescriptor = ((ContactNode) treeNode).getContactDescriptor();
Point location = new Point(button.getX(), button.getY() + button.getHeight());
SwingUtilities.convertPointToScreen(location, treeContactList);
location.y = location.y + treeContactList.getPathBounds(treeContactList.getSelectionPath()).y;
location.x += 8;
location.y -= 8;
CallManager.call(contactDescriptor, isVideo, isDesktopSharing, treeContactList, location);
}
