* Improves parity between partials and controls. A partial or control can be settingless if instantiated with `settings` param as empty array (otherwise, if null, then the partial/control ID is used).
* Eliminate need to create dummy settings that serve no purpose except to place a control in the UI.
* Removes dummy settings for `create_new_menu` and `new_menu_name`.
* Introduces `WP_Customize_Control::$capability` and `WP_Customize_Partial::$capability`, and if set checks them in the respective `check_capabilities()` methods.
* Prevents PHP fatal error from happening when non-existing settings are provided to control: "Call to a member function `check_capabilities()` on a non-object".
* Fixes issue where nav menu items and widgets were no longer working with selective refresh because cap check was failing.
See #27355.
Fixes#35926.
git-svn-id: https://develop.svn.wordpress.org/trunk@36689 602fd350-edb4-49c9-b593-d223f7449a82
Introduces `WP_Customize_Manager::get_previewable_devices()` with a `customize_previewable_devices` filter to change the default device and which devices are available for previewing. This is a feature that was first pioneered on WordPress.com.
Props celloexpressions, folletto, valendesigns, westonruter, welcher, adamsilverstein, michaelarestad, Fab1en.
Fixes#31195.
git-svn-id: https://develop.svn.wordpress.org/trunk@36532 602fd350-edb4-49c9-b593-d223f7449a82
Widgets panel will not wait to display until the preview loads.
Also fixes problems with `margin-top` in panels where other panels' `active` states change, as well as ensuring sections of deactivated panel collapse before panel is hidden to prevent the pane from becoming empty of controls.
Fixes#33052.
Fixes#33567.
git-svn-id: https://develop.svn.wordpress.org/trunk@35231 602fd350-edb4-49c9-b593-d223f7449a82
* Always fall back to using the default template if no custom template exists.
* Provide a set of default params when constructing new `Section` and `Panel` objects.
Includes QUnit tests.
Props celloexpressions, westonruter, ocean90.
Fixes#30737.
git-svn-id: https://develop.svn.wordpress.org/trunk@32681 602fd350-edb4-49c9-b593-d223f7449a82
Includes tests for the broken `activate()`/`deactivate()` methods, which were fixed in [30871].
props westonruter.
see #30701.
git-svn-id: https://develop.svn.wordpress.org/trunk@30919 602fd350-edb4-49c9-b593-d223f7449a82
