checkAll method doesn't allow to expand the nodes

[sharathdaniel]

After using $("#treeview").hummingbird("checkAll"); i can't expand the nodes. Even with prechecked items its not possible to expand or collapse.

Here's a jsfiddle: https://jsfiddle.net/4o1kh2nq/

What i want to achieve is:

• Some of the items will be checked already, but can be unchecked.

• Some of them might be checked already, but cannot be unchecked.

• I should be be able to collapse and expand each node.

[hummingbird-dev]

Please read the documentation carefully. First of all you have to initialize the treeview. After that you can apply methods like "checkAll". Check your jsfiddle, I have changed it.

Regarding your requirements:

• Some of the items will be checked already, but can be unchecked.
  This is explained here under "Pre-check": https://github.com/hummingbird-dev/hummingbird-treeview#add-on-options-and-functionality

• Some of them might be checked already, but cannot be unchecked.
  Same as above, but you have to use in addition the "disableNode" method on the nodes.

• I should be be able to collapse and expand each node
  This is default behavior for all "parent" nodes.