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.

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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.

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Setting an Item Field

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

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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.

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Suggested Links

• Angular TreeView Homepage
• API Reference of the Angular TreeView