[wp-trac] [WordPress Trac] #18954: Automatically whitelist screen options added via add_screen_option()

[WordPress Trac]

#18954: Automatically whitelist screen options added via add_screen_option()
-------------------------+-----------------------------
 Reporter:  mdawaffe     |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  General      |    Version:
 Severity:  normal       |   Keywords:
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 {{{set_screen_options()}}} currently maintains a hardcoded whitelist of
 screens that can set options.

 The list is extendable via the filter:

 {{{
 apply_filters('set-screen-option', false, $option, $value);
 }}}

 but that's sort of a pain.  If a plugin calls {{{add_screen_option()}}},
 it should be added to the whitelist automatically.

 Also note that {{{set_screen_options()}}} is called so early, there's no
 convenient place for plugins to add to the {{{set-screen-option}}} filter.
 The best workaround I've been able to come up with is to manually call
 {{{set_screen_options()}}} again inside the page's {{{load-$hook}}}.

 Example naive plugin code that does not work in <=3.3.

 {{{
 # Inside a menu page's load-$hook
 // Display per-page settings in screen options
 add_screen_option( 'per_page', array( 'label' => __( 'Things' ) ) );
 }}}

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Ticket URL: <http://core.trac.wordpress.org/ticket/18954>
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