[TAP5-1911] Tree leaf is still not selectable - ASF JIRA

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I can't make a tree leaf selectable. When I click on a leaf there's a javascript error in tree.js:

function doAnimate(element) {
var sublist = $(element).up('li').down("ul");

var dim = sublist.getDimensions();
tree.js:52TypeError: 'undefined' is not an object (evaluating 'sublist.getDimensions')

var duration = Math.min(dim.height * cfg.ANIMATION_RATE,
cfg.MAX_ANIMATION_DURATION)

new Effect.toggle(sublist, cfg.TOGGLE_TYPE, {
duration : duration,
queue :

{ position : 'end', scope : cfg.QUEUE_NAME }

});
}

It (sublist) is undefined because I clicked on 'tree_1', which has an 'li' up from it but no 'ul' down from there:

<li>
<span id="tree_1" class="t-tree-icon t-leaf-node t-tree-expanded"></span>
<span class="t-tree-label t-selectable">
100 Philosophy
</span>
</li>

I saw in ~~TAP5-1629~~ that I have to provide a TreeSelectionModel if I want it to be selectable, and that is what I had done:

<t:tree t:id="tree" t:model="treeModel" t:selectionModel="selectionModel"/>

public TreeSelectionModel<CategoryNode> getSelectionModel() {
if (selectionModel == null)

{ selectionModel = new DefaultTreeSelectionModel<CategoryNode>(); }

return selectionModel;
}

is related to

TAP5-1562 Tree leafs are not selectable