[wp-trac] [WordPress Trac] #9818: a wp_notification field

[WordPress Trac]

#9818: a wp_notification field
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 Reporter:  Denis-de-Bernardy  |       Owner:                
     Type:  feature request    |      Status:  new           
 Priority:  normal             |   Milestone:  Future Release
Component:  UI                 |     Version:  2.8           
 Severity:  normal             |    Keywords:  needs-patch   
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 On occasion, a plugin needs to return some kind of feedback. It would be
 nice if a standard hook existed for this.

 It could go something like this:

 add_filter(wp_notification, foobar)

 foobar() appends to an array of notification messages that get displayed
 to the user on the front end.

 then, on page load:

  - in wp_head if notifications is not empty, we add a style,
 wp_notification, that makes elements of this class invisible, and we load
 jQuery

  - if do_action(wp_notification) is explicitly called on the page, we
 display the messages in there, without the class, and disable the
 notification on the wp_footer hook

  - an action gets fired on wp_footer if do_action(wp_notification) is not
 called, and we use ajax to place the needed messages in a absolutely
 positioned div element, with a close button.

 we could also add some kind of do_action(wp_commentform_notification),
 nearby the comments form, to output comment-related errors in their
 "correct" location as well.

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Ticket URL: <http://core.trac.wordpress.org/ticket/9818>
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