Weston Ruter 93bcd86b2a Customize: Reduce peak memory usage by JSON-encoding settings and controls individually. ...

When there are hundreds of settings and controls (e.g. nav menu items and widget instances) the resulting object that is JSON-encoded can become very large, and `wp_json_encode()` can consume a lot of memory to serialize it. By breaking down the serialization into multiple calls the peak memory usage can be kept in line.

Moves logic out of `wp-admin/customize.php` into the `WP_Customize_Manager` class with new methods:

 * `is_ios()`
 * `get_document_title_template()`
 * `get_preview_url()`/`set_preview_url()`
 * `get_return_url()`/`set_return_url()`
 * `get_autofocus()`/`set_autofocus()`
 * `customize_pane_settings()`

Includes unit tests for these methods, for which the logic was formerly untestable in `customize.php`.

Fixes #33898.

Built from https://develop.svn.wordpress.org/trunk@34269


git-svn-id: http://core.svn.wordpress.org/trunk@34233 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2015-09-17 19:42:26 +00:00

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