[treeview] multi-level async

[Nathan]

I have found two limitations to the current treeview.async when loading multi-level async branches. Working update is attached.

Issues:

1. If an async branch is loaded with {expanded: false}, the closed class is not applied, resulting in an empty branch being left open.

I have update:

if (this.expanded) {

current.addClass("open");

}

to

if (this.expanded) {

current.addClass("open"); } else { current.addClass("closed"); }

2. If a async loaded branch has async itself, with hasChildren, the placeholder item remains visible and the secondary branch is not loaded until the item is toggled.

I have update the placeholder generating code to:

if (!this.expanded) {

current.addClass("hasChildren"); createNode.call({

text:"placeholder", id:"placeholder", children:[]

}, branch);

} else {

load(settings, this.id, branch, container);

}

[Nathan]

Update for mulit-level async loading.

[dmethvin]

This is not a jQuery core bug. Please report plugin bugs to the plugin's author, or ask on the jQuery forums. jQuery UI bugs should be reported on the UI bug tracker, ​http://dev.jqueryui.com .