Persisting the Disabled State

The TreeView enables you to define and persist the disabled state of its nodes when the component is re-rendered.

Basics

The TreeView determines the disabled state of its nodes by exposing the isDisabled function.

Built-in Directives

To persist the disabled state of the TreeView, either:

• Use the built-in DisableDirective, or
• Set an item field.

Using the Built-In Directive

By default, the built-in DisableDirective persists the disabled items based on their hierarchical index.

Setting an Item Field

You can also persist the disabled state of the TreeView by item field—for example, the text field.

Disable Parent Nodes

By default, the TreeView component disables all child nodes of a disabled node. The component can be configured to disable parent nodes only without disabling its children by setting the disableParentNodesOnly field to true.

Suggested Links

• Angular TreeView Homepage
• API Reference of the Angular TreeView