Core class used to implement a Custom HTML widget.

Sets up a new Custom HTML widget instance.

Outputs the Custom HTML widget settings form.

Handles updating settings for the current Custom HTML widget instance.

Outputs the content for the current Custom HTML widget instance.

Outputs the Text widget settings form.

Determines whether a given instance is legacy and should bypass using TinyMCE.

Filters the REST API response.

Filters the content of the Custom HTML widget.

Filters the content of the Text widget.