[wp-trac] [WordPress Trac] #57864: Defer register inline script in WP_Widget

[WordPress Trac]

#57864: Defer register inline script in WP_Widget
--------------------------+-----------------------------
 Reporter:  spacedmonkey  |      Owner:  (none)
     Type:  enhancement   |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Widgets       |    Version:  4.8.1
 Severity:  normal        |   Keywords:
  Focuses:  performance   |
--------------------------+-----------------------------
 In the widget classes, WP_Widget_Custom_HTML and WP_Widget_Text, the
 method `_register_one` is called. This method registered a inline script
 like this.

 {{{#!php
 wp_add_inline_script( 'text-widgets', sprintf(
 'wp.textWidgets.idBases.push( %s );', wp_json_encode( $this->id_base ) )
 );
 }}}

 {{{#!php
 wp_add_inline_script( 'custom-html-widgets', sprintf(
 'wp.customHtmlWidgets.idBases.push( %s );', wp_json_encode( $this->id_base
 ) ) );
 }}}

 This results in a script registering. However, this inline script is not
 used, unless script is loaded in `admin_print_scripts-widgets.php` hook.

 This inline script being registered like this, means that when the widget
 is registered, this inline script is registered as well. In my use page
 types, this inline script serves no purpose and hiders performance.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/57864>
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