Daryl Koopersmith c88445c82d Theme Customizer: Improve default background property handling. see #20600, #19910. ...

If the custom background default wp-head-callback (_custom_background_cb) is used, we use postMessage for all custom background properties. Otherwise, we use full refreshes.

When using postMessage, the preview recalculates the custom background CSS block, allowing it to omit CSS values when they are not present and fall back on the original CSS.


git-svn-id: https://develop.svn.wordpress.org/trunk@20908 602fd350-edb4-49c9-b593-d223f7449a82

2012-05-25 18:41:22 +00:00

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