Commit Graph

15908 Commits

Author SHA1 Message Date
Scott Taylor 11216c7069 FTP: ensure that there is only one class named `ftp`, which is what is expected in the loading of this arcane library. This ensures that an autoload generator, something along the lines of Composer, won't hiccup when it gets to these files.
See #36335.

Built from https://develop.svn.wordpress.org/trunk@38380


git-svn-id: http://core.svn.wordpress.org/trunk@38321 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-26 18:47:29 +00:00
Scott Taylor b1c6049be4 Upgrade/Install: `wp-admin/includes/class-wp-upgrader-skins.php` is unused, remove it. All of the same includes are loaded in `class-wp-upgrader.php`.
See #37827.

Built from https://develop.svn.wordpress.org/trunk@38379


git-svn-id: http://core.svn.wordpress.org/trunk@38320 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-26 18:25:30 +00:00
Scott Taylor 76c7864367 Load: remove `class-feed.php` (There is no class named `Feed` or `WP_Feed`, it just loads other classes) and, instead, move the `require` calls to the only place they are ever included: inside `fetch_feed()`. This simplifies the include path.
Tested with this feed in a widget: `http://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml`.

See #36335.

Built from https://develop.svn.wordpress.org/trunk@38374


git-svn-id: http://core.svn.wordpress.org/trunk@38315 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-26 17:53:30 +00:00
Scott Taylor 524effb58f Load: remove `session.php` and, instead, move the 2 `require` calls to `wp-settings.php`. This simplifies the include path.
See #36335.

Built from https://develop.svn.wordpress.org/trunk@38373


git-svn-id: http://core.svn.wordpress.org/trunk@38314 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-26 17:45:17 +00:00
John Blackbourn 94c8ca0f2e Docs: Correct various documentation around `object` and `stdClass` types.
See #37770

Built from https://develop.svn.wordpress.org/trunk@38369


git-svn-id: http://core.svn.wordpress.org/trunk@38310 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-26 16:49:45 +00:00
Scott Taylor 6d87157eb9 i18n: move `is_rtl()` to `l10n.php` (which loads way earlier). Load `WP_Locale` file in `wp-settings.php`. Retire `wp-includes/locale.php` - it only loaded the class and the one function, `is_rtl()`. If someone loaded this file for fun somewhere else, it would be a fatal error.
See #37827.

Built from https://develop.svn.wordpress.org/trunk@38364


git-svn-id: http://core.svn.wordpress.org/trunk@38305 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-26 10:20:29 +00:00
Scott Taylor ff59281441 OEmbed: move `_wp_oembed_get_object()` to `embed.php`, where all of the other embed functions live. `WP_oEmbed` is then in a file by itself. Load `class-oembed.php` in `wp-settings.php` and remove extraneous include calls.
See #37827.

Built from https://develop.svn.wordpress.org/trunk@38361


git-svn-id: http://core.svn.wordpress.org/trunk@38302 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-26 09:49:28 +00:00
Scott Taylor a9386ea7c1 Editor: improve `word-count.js` documentation.
Props jipmoors, andizer.
Fixes #37718.

Built from https://develop.svn.wordpress.org/trunk@38358


git-svn-id: http://core.svn.wordpress.org/trunk@38299 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-26 09:25:27 +00:00
Scott Taylor 9ce58d9d86 Site Icon: There is no good reason for `class-wp-site-icon.php` to drop a global instance of itself whenever the file is loaded. The lone use of the `global` instance of `WP_Site_Icon` is in an AJAX action that provides virtually no way to override - the file is loaded immediately before the `global` is used.
Let us remove the `$wp_site_icon` global. I will fall on the sword if this comes back to bite us (waiting with bated breath).

See #37699.

Built from https://develop.svn.wordpress.org/trunk@38355


git-svn-id: http://core.svn.wordpress.org/trunk@38296 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-25 19:09:35 +00:00
Sergey Biryukov b79713c1b0 Administration: Underline links in the admin footer for better accessibility.
Props Presskopp.
Fixes #37529.
Built from https://develop.svn.wordpress.org/trunk@38347


git-svn-id: http://core.svn.wordpress.org/trunk@38288 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-24 15:43:31 +00:00
Scott Taylor b7812bd416 AJAX: add a new function, `wp_doing_ajax()`, which can replace... (wait for it...) `DOING_AJAX` checks via the constant.
Props Mte90, sebastian.pisula, swissspidy.
Fixes #25669.

Built from https://develop.svn.wordpress.org/trunk@38334


git-svn-id: http://core.svn.wordpress.org/trunk@38275 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-23 14:33:30 +00:00
Scott Taylor 6f9f3b0c56 Media: remove `function_exists()` call for `ini_get()` in `_load_image_to_edit_path()`.
Props dd32.
Fixes #37681.

Built from https://develop.svn.wordpress.org/trunk@38333


git-svn-id: http://core.svn.wordpress.org/trunk@38274 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-23 14:24:30 +00:00
Sergey Biryukov ec8f0281fa I18N: Remove unnecessary context for two strings on "Add New User" screen.
Props ramiy.
Fixes #37784.
Built from https://develop.svn.wordpress.org/trunk@38329


git-svn-id: http://core.svn.wordpress.org/trunk@38270 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-23 12:54:31 +00:00
Sergey Biryukov 92343be1f4 I18N: Allow for WordPress Plugin/Theme Directory URLs to be localized.
Props ramiy.
Fixes #37501.
Built from https://develop.svn.wordpress.org/trunk@38325


git-svn-id: http://core.svn.wordpress.org/trunk@38266 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-23 01:19:39 +00:00
Sergey Biryukov fee26cf741 I18N: Replace unnecessary context with a translator comment for `%s Sites` string in `network_step1()`.
Props ramiy.
Fixes #37777.
Built from https://develop.svn.wordpress.org/trunk@38323


git-svn-id: http://core.svn.wordpress.org/trunk@38264 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-23 00:17:27 +00:00
Sergey Biryukov 96bdd4737c I18N: Replace unnecessary context with a translator comment for `%s KB` string on Network Settings screen.
Props ramiy.
Fixes #37496.
Built from https://develop.svn.wordpress.org/trunk@38322


git-svn-id: http://core.svn.wordpress.org/trunk@38263 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-23 00:11:28 +00:00
Sergey Biryukov 44aac380f4 I18N: Add translator comments for `Edit Site: %s` string in network admin.
Props ramiy.
Fixes #37776.
Built from https://develop.svn.wordpress.org/trunk@38320


git-svn-id: http://core.svn.wordpress.org/trunk@38261 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-22 23:53:31 +00:00
Scott Taylor 5025f72fd3 Nav Menus: remove unnecessary variable assignment in `wp_nav_menu_item_post_type_meta_box()`.
See #37771.

Built from https://develop.svn.wordpress.org/trunk@38311


git-svn-id: http://core.svn.wordpress.org/trunk@38252 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-22 20:58:28 +00:00
Drew Jaynes 22adda2aa0 Hooks: Standardize naming of dynamic hooks to use interpolation vs concatenation.
Benefits gained in discoverability and self-documentation throughout core trump the negligible performance hit in using interpolation in hook names.

Props ramiy.
See #37748.

Built from https://develop.svn.wordpress.org/trunk@38307


git-svn-id: http://core.svn.wordpress.org/trunk@38248 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-22 18:25:31 +00:00
Sergey Biryukov 02939c03e5 Common CSS: Allow for `.nav-tab-wrapper` class to be used on elements other than `h3` to increase flexibility for custom settings pages.
Props ramiy, afercia.
Fixes #37257.
Built from https://develop.svn.wordpress.org/trunk@38306


git-svn-id: http://core.svn.wordpress.org/trunk@38247 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-22 16:33:30 +00:00
Sergey Biryukov 26d7a5607b Multisite: Fix copy/paste issue in `id` attribute for a dismissible message on Sites screen.
Props imath.
Fixes #37764.
Built from https://develop.svn.wordpress.org/trunk@38305


git-svn-id: http://core.svn.wordpress.org/trunk@38246 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-22 14:22:31 +00:00
Scott Taylor d31456b615 Media: add a function, `wp_get_additional_image_sizes()`, that wraps the retrieval of the global `$_wp_additional_image_sizes`. Removes 6 global imports.
See #37699.

Built from https://develop.svn.wordpress.org/trunk@38303


git-svn-id: http://core.svn.wordpress.org/trunk@38244 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-22 04:37:28 +00:00
Weston Ruter ee44093211 Customize: Ensure a newly-added custom link nav menu item has the appropriate CSS class names.
For nav menu items of the `custom` type, their `object` should also be set to `custom`, so that the `menu-item-custom` class name will be added.

Props vishalkakadiya.
Fixes #37575.

Built from https://develop.svn.wordpress.org/trunk@38301


git-svn-id: http://core.svn.wordpress.org/trunk@38242 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-22 03:12:32 +00:00
Weston Ruter 57740f3c91 Docs: Update jsdoc in `customize-nav-menus.js` to remove references to Menu Customizer plugin.
Also fix `@param` for `updateAssignedLocationsInSectionTitle`.

Props gma992, westonruter.
Fixes #37520.

Built from https://develop.svn.wordpress.org/trunk@38300


git-svn-id: http://core.svn.wordpress.org/trunk@38241 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-22 00:56:27 +00:00
Scott Taylor 7ac88c02fa Media: when calling `pathinfo()`, also pass a `PATHINFO_*` constant to avoid array notices for unset keys.
Props JaworskiMatt.
Fixes #37608.

Built from https://develop.svn.wordpress.org/trunk@38294


git-svn-id: http://core.svn.wordpress.org/trunk@38235 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-20 23:36:28 +00:00
Scott Taylor d73964aab6 Media: Add some docs to `media-gallery.js` RIP.
Props jipmoors.
Fixes #37717.

Built from https://develop.svn.wordpress.org/trunk@38293


git-svn-id: http://core.svn.wordpress.org/trunk@38234 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-20 22:59:29 +00:00
John Blackbourn 594b88661a Permalinks: Correct the documentation for the `get_sample_permalink` filter, and improve the documentation for the `get_sample_permalink()` function.
Props sebastian.pisula for the original patch
Fixes #37682

Built from https://develop.svn.wordpress.org/trunk@38272


git-svn-id: http://core.svn.wordpress.org/trunk@38213 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-17 18:30:30 +00:00
Dominik Schilling 14cbd0e730 About Page: Add release video and move images to CDN.
Props jerrysarcastic, rosso99, petya, hugobaeta, jerrysarcastic.
See #37246.
Built from https://develop.svn.wordpress.org/trunk@38267


git-svn-id: http://core.svn.wordpress.org/trunk@38208 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-16 17:58:30 +00:00
Dominik Schilling 2ccd9b46dd About Page: Enhance responsive images.
* Add `srcset` and `sizes` to the mobile image for streamlined updates.
* Modify the order of image candidate strings in each `srcset` to address a bug in iOS8 where the first candidate will always be selected when using `w` descriptors, see #35030.

Props joemcgill.
Fixes #37246.
Built from https://develop.svn.wordpress.org/trunk@38257


git-svn-id: http://core.svn.wordpress.org/trunk@38198 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-13 19:28:29 +00:00
Drew Jaynes 1691196110 Docs: Add a period missed in an argument description in [38253] for #36338.
Built from https://develop.svn.wordpress.org/trunk@38254


git-svn-id: http://core.svn.wordpress.org/trunk@38195 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-13 17:44:28 +00:00
Drew Jaynes 51810b926a Docs: Add documentation for all arguments accepted by `export_wp()`.
Props theMikeD for the initial patch.
Fixes #36338.

Built from https://develop.svn.wordpress.org/trunk@38253


git-svn-id: http://core.svn.wordpress.org/trunk@38194 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-13 17:43:28 +00:00
Dominik Schilling 3a0771b986 About Page: Fix punctuation errors in two strings.
See #37246.
Built from https://develop.svn.wordpress.org/trunk@38248


git-svn-id: http://core.svn.wordpress.org/trunk@38189 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-11 20:51:46 +00:00
Dominik Schilling eb02dac3e7 About Page: Third pass for 4.6.
* Adjust strings.
* Make strings translatable.
* Improve margin between copy and images.

Props Ipstenu, SergeyBiryukov, Presskopp, jeremyfelt, afragen, helen, Clorith, macmanx, DrewAPicture, voldemortensen, jorbin, MattyRob, ocean90.
See #37246.
Built from https://develop.svn.wordpress.org/trunk@38244


git-svn-id: http://core.svn.wordpress.org/trunk@38185 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-10 23:33:30 +00:00
Dominik Schilling 0d2106e2eb Upgrader: Rename `class-wp-automatic-upgrader.php` to `class-wp-automatic-updater.php`.
The class is named `WP_Automatic_Updater` not `WP_Automatic_Upgrader` like all the other upgrader classes. 

Introduced in [37409].
See #37628.
Built from https://develop.svn.wordpress.org/trunk@38242


git-svn-id: http://core.svn.wordpress.org/trunk@38183 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-10 19:51:29 +00:00
Andrew Ozz 0d4320fcbc Update/Install error messages: do not escape from the template, escape the error message string before inserting it.
Props swissspidy, ocean90.
Fixes #37623 for trunk.
Built from https://develop.svn.wordpress.org/trunk@38240


git-svn-id: http://core.svn.wordpress.org/trunk@38181 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-10 19:03:31 +00:00
Drew Jaynes 7643afd97c Update/Install: Provide basic back-compat styling for the `.update-message` CSS class in the plugins list table.
This change restores only the margin and padding styles for the `.update-message` class when used by plugins in the context of adding arbitrary rows to the list table. The inline-update colors and icon styles were not restored, expressly with a wide variety of plugin use-cases in mind.

Props ovann86, rahulsprajapati, ocean90, DrewAPicture.
Props helen for review.
See #37504.

Built from https://develop.svn.wordpress.org/trunk@38237


git-svn-id: http://core.svn.wordpress.org/trunk@38178 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-09 22:45:40 +00:00
Dominik Schilling 771fc167b6 Media: In `_wp_handle_upload()` use `call_user_func_array()` to call the upload error handler.
The default error handler `wp_handle_upload_error()` expects a reference for the first parameter but `call_user_func()` doesn't pass parameters by reference. The current code didn't produce any issues until now. PHP 7.0.9 (and PHP 7.1) is now stricter and prevents calling the error handler with a warning:
> PHP Warning:  Parameter 1 to wp_handle_upload_error() expected to be a reference, value given.

To restore the error handler `_wp_handle_upload()` now uses `call_user_func_array()`.

Props jbrinley.
Props jorbin for review.
Fixes #37570.
Built from https://develop.svn.wordpress.org/trunk@38235


git-svn-id: http://core.svn.wordpress.org/trunk@38176 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-09 21:54:30 +00:00
Dominik Schilling 5d9f94693e About Page: Update video for streamlined updates and add `srcset`/`sizes` attributes for the static images.
Props hugobaeta, joemcgill.
See #37246.
Built from https://develop.svn.wordpress.org/trunk@38234


git-svn-id: http://core.svn.wordpress.org/trunk@38175 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-09 19:26:30 +00:00
Gary Pendergast 210e23a63d Multisite: Improve performance of the upgrade page on large networks.
The query to select the next 5 blogs to upgrade was ordered by `registered`, which isn't indexed. This causes the query to table scan, which will be slow on networks with many blogs.

The query only needs to be ordered by something that won't change, so ordering by `blog_id` is a good replacement. `blog_id` is indexed, and it's the only column being returned, so MySQL is able to optimize for a fast index read.

Props fliespl.
Fixes #37612.


Built from https://develop.svn.wordpress.org/trunk@38229


git-svn-id: http://core.svn.wordpress.org/trunk@38170 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-09 11:39:36 +00:00
Dominik Schilling cb131d8d5f Updates: Add visual feedback when deleting themes/plugins.
This corrects the selector for the delete link in `wp.updates.deletePlugin()` so the text can be changed to 'Deleting…'. `wp.updates.deleteTheme()` already worked on wp-admin/themes.php but not on wp-admin/network/themes.php because the network screen is similar to the plugins list table, this is now fixed too.
The `credential-modal-cancel` handler has been updated to support canceled delete jobs.

Props swissspidy.
Props jorbin for review.
Fixes #37603.
Built from https://develop.svn.wordpress.org/trunk@38227


git-svn-id: http://core.svn.wordpress.org/trunk@38168 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-09 10:39:32 +00:00
Dominik Schilling 9970c6ca5a Dashboard: Don't escape widget titles in screen reader text.
Introduced in [37972]. The title for the Quick Draft widget contains HTML to provide a JS/no-JS version.

Props SergeyBiryukov for review.
See #37595.
Fixes #37594.
Built from https://develop.svn.wordpress.org/trunk@38225


git-svn-id: http://core.svn.wordpress.org/trunk@38166 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-09 09:07:30 +00:00
Aaron Jorbin b3b32f22a1 Updates: Improve experience for Bulk Actions when FTP is dismissed.
Before this change, when a bulk update was canceled due dismissing the FTP credentials modal, part of the actions didn't get canceled.  This meant the "There is a new version of…” notices become blank and the updates you had checked became unchecked.  Now, the notices remain and you are essentially returned to the screen you had before. Strings are also updated to improve ARIA usage.

Fixes #37563.
Props ocean90, swissspidy, obenland, afercia.


Built from https://develop.svn.wordpress.org/trunk@38221


git-svn-id: http://core.svn.wordpress.org/trunk@38162 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-09 01:14:28 +00:00
Aaron Jorbin b86f7a832b Updates: Standardize JS Custom Event Names
Custom JS events are triggered on the document in order for plugins to have something to hook into.  The standard began in #31819 is dash separated and begins with `wp` to signify the namespace, followed by the subject of our action ( "theme", "plugin", etc.) followed by the action and an optional indicator of status ( "install-success", "deleting" ).

This brings some of the theme hooks in line with the standard.  As of now, all plugin actions in `src/wp-admin/js/updates.js` have an equal corresponding theme action.

Fixes #37598.
See #37512, #37216, #31819.
Props olarmarius, ocean90.



Built from https://develop.svn.wordpress.org/trunk@38218


git-svn-id: http://core.svn.wordpress.org/trunk@38159 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-08 22:49:28 +00:00
Dominik Schilling e9fb6e42be About Page: Use a better version of the mp4 video.
The previous version had the wrong colors. Also remove ogv from the list, it has the wrong colors too and all current browsers support either the mp4 or webm format.

See #37246.
Built from https://develop.svn.wordpress.org/trunk@38215


git-svn-id: http://core.svn.wordpress.org/trunk@38156 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-08 16:02:32 +00:00
Dominik Schilling 55c3fa0cb0 About Page: Second pass for 4.6.
* Update images for native fonts and editor features.
* Add video animation with image fallback for update feature. 
* Rename "Simplified Disaster Recovery" to "Content Recovery".
* Fix broken layout on credits and freedoms pages.

Props hugobaeta, SergeyBiryukov, ocean90.
Fixes #37590.
See #37246.
Built from https://develop.svn.wordpress.org/trunk@38213


git-svn-id: http://core.svn.wordpress.org/trunk@38154 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-07 12:48:30 +00:00
Dominik Schilling 1cef5f60f9 Update/Install: Remove the `.notice-error` class before adding classes for the update process.
Prevents displaying an update message with error styling.

Props obenland.
Props SergeyBiryukov for review.
Fixes #37550.
Built from https://develop.svn.wordpress.org/trunk@38209


git-svn-id: http://core.svn.wordpress.org/trunk@38150 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-05 22:57:29 +00:00
Dominik Schilling 427f4b625d Customize: Increase the target size of the 'Edit Menu' button.
Props celloexpressions.
Props afercia, helen for review.
Fixes #36795.
Built from https://develop.svn.wordpress.org/trunk@38207


git-svn-id: http://core.svn.wordpress.org/trunk@38148 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-05 22:38:29 +00:00
Dominik Schilling 572a9cb488 Update/Install: Replace "error" and "-1" failure messages with a more meaningful one.
* "-1" is an invalid nonce error, show 'An error has occurred. Please reload the page and try again.'.
* "error" means that the connection to the server was lost, show 'Connection lost or the server is busy. Please try again later.'.
* Escape the message in `wp-updates-admin-notice` because the response may include HTML.
* Remove HTML tags in `wp.updates.isValidResponse()` to make PHP's error messages more readable.

Props azaozz for review.
Fixes #37583.
Built from https://develop.svn.wordpress.org/trunk@38205


git-svn-id: http://core.svn.wordpress.org/trunk@38146 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-05 19:28:30 +00:00
John Blackbourn ab052361a3 Docs: Correct and clarify various `@since` docs.
Fixes #37562

Built from https://develop.svn.wordpress.org/trunk@38201


git-svn-id: http://core.svn.wordpress.org/trunk@38142 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-04 22:54:31 +00:00
Dominik Schilling 58d772a02f Upgrade/Install: Make some install/update failures more verbose.
An upgrader class is used in conjunction with an upgrader skin class. A skin class handles the logging for an upgrade and informs a user about the progress and failures.
The current Ajax install/update handlers are using the `Automatic_Upgrader_Skin` class because during an Ajax request no output is intended. The difference between Ajax updates and automatic updates is that you will see the full log (usually by email) while Ajax updates focus only on success or failure. For that `Automatic_Upgrader_Skin` has one disadvantage: It doesn't provide a way to retrieve failure messages which were passed through `WP_Upgrader_Skin::error()` by the upgrader.
To solve this issue a new skin `WP_Ajax_Upgrader_Skin` has been introduced. The skin extends `Automatic_Upgrader_Skin` and overrides the `error()` and `feedback()` methods to intercept all errors, which can be a `WP_Error` object or a string.

This updates all four Ajax handler for installing/updating themes/plugins to use the new skin. They now also check the skin for any intercepted errors and pass them on to the user.

Props flixos90, obenland, ocean90.
Props DrewAPicture, pento for review.
Fixes #37531.
Built from https://develop.svn.wordpress.org/trunk@38199


git-svn-id: http://core.svn.wordpress.org/trunk@38140 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-08-04 22:18:30 +00:00