Tree: option where clicking label shows children

[guest]

Posted at bill's request after http://dojotoolkit.org/forum/dijit-dijit-0-9/dijit-development-discussion/treenode-expand-method-doesnt-first-populate-chil

A Tree that displays hierarchical data should be able to function like Windows Explorer's folder pane where clicking on a parent opens up the children below (rather than forcing a click on the expando).

Under 0.9, I was able to construct a workaround by copying the code from the prototype's expando code however I would have preferred to just call node.expand().

<div id="myTree" dojoType="dijit.Tree" store="myStore" labelAttr="label" childrenAttr="children">
  <script type="dojo/method" event="onClick" args="item,node">
    if( myList.getValue(item,"type") == "leaf") {
      /* my custom action */
      handleChildClick( myList.getValue(item, "childID"));
    } else if( node.isExpanded) {
      /* this works fine */
      node.collapse();
    } else {
      /* this doesn't work because the children aren't there yet */
      // node.expand();
      /* this works because it is copied from the expando's _onClick handler */
      dijit.byId("myTree")._publish("toggleOpen", {node:node});
    }
  </script>
</div>

Ideally this behavior could be built into the Tree control itself and toggled on or off by declaration.

[bill]

Thanks. If this option is set to true then should the user's onClick function still be called (on non-leaf nodes)?

[bill]

(In [11721]) Add openOnClick parameter to make clicking a folder node toggle it open/closed, rather than generating an onClick event. Fixes #4553.