As with the Folder Style example, here we're using CSS to control the styling of our TreeView Control's node icons. The CSS and image assets for the Menu Style are available as part of the YUI download package.
This example also implements
MenuNode instead of
TextNode for node creation. Only one
MenuNode can be open at a given depth at the same time. This creates an interaction in which nodes close up behind you as you open new ones, keeping the vertical size of the TreeView more compact during navigation.
The key change we've made in this TreeView Control example is that we've applied a supplementary CSS file to create the "Menu Style" node presentation:
This CSS redefines the look of branch nodes so they appear as arrows. The folder-style CSS accompanies your YUI download and can be found in the
link element referenced above, the following markup is on the page for this example:
Note: Logging and debugging is currently turned off for this example.
All YUI 2.x users should review the YUI 2.8.2 security bulletin, which discusses a vulnerability present in YUI 2.4.0-2.8.1.