The contact-form-7 wpcf7 editor panels hook.
Published Date - July 22, 2023
$panels = apply_filters( 'wpcf7_editor_panels', $panels );
$panels
The following example is for adding a hook callback.
// define the wpcf7_editor_panels callback
function custom_wpcf7_editor_panels( $panels ){
//custom code here
return $panels
}
//add the action
add_filter('wpcf7_editor_panels', 'custom_wpcf7_editor_panels', 10, 1)
The filter is defined in the following location(s).
contact-form-7/admin/edit-contact-form.php
$panels = apply_filters( 'wpcf7_editor_panels', $panels );