[wp-trac] [WordPress Trac] #40278: Customizer: Introduce theme uploading

[WordPress Trac]

#40278: Customizer: Introduce theme uploading
----------------------------+---------------------------------
 Reporter:  melchoyce       |       Owner:  (none)
     Type:  task (blessed)  |      Status:  new
 Priority:  normal          |   Milestone:  Future Release
Component:  Customize       |     Version:  4.9
 Severity:  normal          |  Resolution:
 Keywords:  needs-patch     |     Focuses:  ui, administration
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Changes (by celloexpressions):

 * version:   => 4.9


Comment:

 This ticket is ready for development based on [attachment:"customizer-
 theme-showcase-i5.png"].

 The upload new theme controls should be contained within a new customize
 section, likely extending `WP_Customize_Themes_Section`. The section
 should contain one control that has a `title`, `description`,  upload
 button/dropzone, and upload progress bar. This control could potentially
 extend (or take inspiration from) `WP_Customize_Media_Control`.

 The upload should send an ajax request using the "shiny updates"
 functionality to upload and install the theme similar to the process for
 installing a WordPress.org theme. On success, the upload control should
 transform to show a "Live Preview" primary button that matches the
 behavior of installing a WordPress.org theme.

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Ticket URL: <https://core.trac.wordpress.org/ticket/40278#comment:23>
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