Function wp_rml_select_tree

Returns a .rml-root-list with an given tree. The selected folder id is saved automatically in a hidden input type.

Note #1 The select tree has a javascript callback when it is initalized. You can bind it with this snippet:

window.rml.hooks.register("tree/custom", function(obj, $) {
      //if (obj.hasClass("my-extra-class")) {
           alert(obj.html());
      //}
});

Note #2 If you want to use the select tree after a DOM change (ajax, for example: Modal dialog in visual editor) please call the javascript function

window.rml.library.customLists()

to affect the initalization referred to Note #1.

Note #3 You can use a sub class of IFolder to customize your tree.