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An internal utility component that provides show/hide functionality.

This component is intended only for internal Helios use. If you need to use it, please contact the Design Systems Team.

How to use this component

The DisclosurePrimitive component renders an interactive element that triggers a custom event handler provided by the :toggle block (passed via hash by Ember). To comply with accessibility best practices, this element is usually a button or a component that renders a button.

When the content is disclosed, the container can be closed by toggling the button (click or enter/return).

Note: MenuPrimitive, another variant of this primitive, includes extra functionality to close the content panel by either clicking outside of the content, or via the esc key.

  <:toggle as |t|>
    <button type="button" {{on "click" t.onClickToggle}}>Click me</button>
    your content here

Content positioning

The :content block is not positioned in relation to the :toggle block.

Component API

<:toggle> named block
A named block that works as "toggle" for the DisclosurePrimitive.
[:toggle].onClickToggle event handler
A function to be called by the interactive element to toggle visibility of the content.
[:toggle].isOpen tracked property
Hook into this tracked property to access the state of isOpen.
<:content> named block
A named block for the content that is shown/hidden upon toggling.
[:content].close function
A function to programmatically close the DisclosurePrimitive.
isOpen boolean
  • false (default)
Toggles the visibility of the content when the toggle button is interacted with. To display content on page load, set the value to true.
onClose function
A callback function invoked when the DisclosurePrimitive is closed (if provided).
This component supports use of ...attributes.