Customize: Use selective refresh for custom header changes when possible.

* Use `postMessage` transport for header image settings by default when video headers are supported, and thus `the_custom_header_markup()` will necessarily be used (and thus a selective refresh partial will be available).
* Ensure that `the_custom_header_markup()` always outputs a container element in the customizer preview even if the header is empty.
* Ensure that edit shortcut appearing for custom header does not get positioned off-screen.

Props bradyvercher, westonruter.
See #38639.
Fixes #38737.

Built from https://develop.svn.wordpress.org/trunk@39227


git-svn-id: http://core.svn.wordpress.org/trunk@39167 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Weston Ruter
2016-11-14 18:41:32 +00:00
parent 9ef40ced2f
commit dfbcdae985
9 changed files with 34 additions and 28 deletions

View File

@@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.7-beta3-39226';
$wp_version = '4.7-beta3-39227';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.