[wp-trac] [WordPress Trac] #45112: Integrate meta box support for the new editor

[WordPress Trac]

#45112: Integrate meta box support for the new editor
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 Reporter:  desrosj              |       Owner:  (none)
     Type:  task (blessed)       |      Status:  new
 Priority:  normal               |   Milestone:  5.0
Component:  Options, Meta APIs   |     Version:
 Severity:  normal               |  Resolution:
 Keywords:  has-patch fixed-5.0  |     Focuses:
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Comment (by pento):

 In [changeset:"44132" 44132]:
 {{{
 #!CommitTicketReference repository="" revision="44132"
 Meta Boxes: Add `__back_compat_meta_box` and
 `__block_editor_compatible_meta_box` flags to meta boxes.

 When meta boxes are registered, they can use the `__back_compat_meta_box`
 and `__block_editor_compatible_meta_box` flags, to show whether this
 registration just exists for if the classic editor is loaded, and whether
 this meta box is compatible with the block editor.

 When a meta box marks itself as incompatible with the block editor, and
 `WP_DEBUG` is enabled, a warning will show inside that meta box in the
 classic editor.

 As all core meta boxes have been recreated in the block editor, they can
 be marked with the `__back_compat_meta_box` flag.

 Merges [43779] from the 5.0 branch to trunk.

 See #45112.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/45112#comment:34>
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