WordPress/wp-admin
Weston Ruter 1ccd9e7a6c Customize: Introduce custom CSS for extending theme styles.
* Custom CSS is associated with a given theme and is displayed in an inline `style` element at the `wp_head` hook after the `wp_print_styles` is called so that it overrides any enqueued stylesheets.
* A `wp_get_custom_css()` function is used for accessing the CSS associated with the current theme (or another theme) and a `wp_get_custom_css` filter for manipulating it.
* CSS is managed in customizer via a new "Additional CSS" section with a single `textarea` control. 
* `WP_Customize_Section::$description_hidden` is introduced for hiding extended descriptions in customizer sections behind a help toggle as done with panels.
* CSS is stored in a `custom_css` post type with the theme (stylesheet) slug as the `post_name`.
* `WP_Customize_Custom_CSS_Setting` is introduced to handle validation of CSS, previewing, and persisting the CSS to the `custom_css` post type.
* The `custom_css` setting is tied to a new `unfiltered_css` capability which maps to `unfiltered_html` by default.
* Escaping the message in the notification template is removed to allow markup (`code` tags) to be rendered.

See https://make.wordpress.org/core/2016/10/11/feature-proposal-better-theme-customizations-via-custom-css-with-live-previews/

Props johnregan3, celloexpressions, folletto, westonruter.
Fixes #35395.

Built from https://develop.svn.wordpress.org/trunk@38829


git-svn-id: http://core.svn.wordpress.org/trunk@38772 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-19 18:15:31 +00:00
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css Customize: Introduce custom CSS for extending theme styles. 2016-10-19 18:15:31 +00:00
images Customize: Add a RTL version of "browser.png" for the site icon preview. 2016-07-05 11:32:29 +00:00
includes Upgrade/Install: Refresh update counts after page load. 2016-10-19 10:27:29 +00:00
js Customize: Introduce custom CSS for extending theme styles. 2016-10-19 18:15:31 +00:00
maint I18N: Make the translator comment added in [37858] more explicit and consistent with other similar instances. 2016-07-04 13:10:30 +00:00
network Upgrade/Install: Refresh update counts after page load. 2016-10-19 10:27:29 +00:00
user Docs: Standardize hook docs in wp-admin/* to use third-person singular verbs per the inline documentation standards for PHP. 2016-05-22 18:01:30 +00:00
about.php General: use `get_bloginfo( 'version' )` instead of `global $wp_version` in several locations - excluding those locations which reload `version.php` mid-flight. 2016-08-31 05:49:37 +00:00
admin-ajax.php TinyMCE, inline link: 2016-07-26 23:24:28 +00:00
admin-footer.php Hooks: Standardize naming of dynamic hooks to use interpolation vs concatenation. 2016-08-22 18:25:31 +00:00
admin-functions.php Docs: Use 3-digit, x.x.x-style semantic versioning for `_doing_it_wrong()`, `_deprecated_function()`, `_deprecated_argument()`, and `_deprecated_file()` throughout core. 2016-07-06 12:40:29 +00:00
admin-header.php Multisite: Use `get_network()` and `get_current_network_id()` for current network data. 2016-10-19 04:47:30 +00:00
admin-post.php Spelling: Standardize on "front end"/"back end" (noun) and "front-end"/"back-end" (adjective). 2016-02-25 12:53:27 +00:00
admin.php Hooks: Standardize naming of dynamic hooks to use interpolation vs concatenation. 2016-08-22 18:25:31 +00:00
async-upload.php Text Changes: Unify permission error messages. 2016-06-29 15:16:29 +00:00
comment.php Accessibility: Remove target=_blank from the comment/edit-comments help tabs links. 2016-10-04 06:54:30 +00:00
credits.php General: use `get_bloginfo( 'version' )` instead of `global $wp_version` in several locations - excluding those locations which reload `version.php` mid-flight. 2016-08-31 05:49:37 +00:00
custom-background.php Accessibility: Remove target=_blank from the old custom background/header help tabs links. 2016-10-04 06:57:30 +00:00
custom-header.php Accessibility: Remove target=_blank from the old custom background/header help tabs links. 2016-10-04 06:57:30 +00:00
customize.php Customize: Introduce a new experience for discovering, installing, and previewing themes within the customizer. 2016-10-19 03:20:29 +00:00
edit-comments.php Accessibility: Remove target=_blank from the comment/edit-comments help tabs links. 2016-10-04 06:54:30 +00:00
edit-form-advanced.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
edit-form-comment.php Accessibility: Standardize the remove/delete/cancel links in the Menus screen and Publish meta boxes. 2016-09-17 15:39:30 +00:00
edit-link-form.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
edit-tag-form.php Taxonomy: On `wp-admin/term.php`, don't show a 'Back to' link which links to the current page. 2016-10-07 20:13:28 +00:00
edit-tags.php Taxonomy: Remove `paged` argument from referer and add it only if current page is greater than 1. 2016-10-07 20:06:28 +00:00
edit.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
export.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
freedoms.php General: use `get_bloginfo( 'version' )` instead of `global $wp_version` in several locations - excluding those locations which reload `version.php` mid-flight. 2016-08-31 05:49:37 +00:00
import.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
index.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
install-helper.php Docs: Add missing descriptions for the `$wpdb` global in DocBlocks all the places. 2015-10-14 23:44:25 +00:00
install.php Administration: Improve the usage of the button CSS classes. 2016-09-28 19:54:28 +00:00
link-add.php Text Changes: Unify permission error messages. 2016-06-29 15:16:29 +00:00
link-manager.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
link-parse-opml.php Add `@global` annotations for `wp-admin/*`. 2015-05-28 21:41:30 +00:00
link.php Docs: Standardize capitalization of Ajax throughout core documentation per the core spelling guide. 2016-07-10 00:51:30 +00:00
load-scripts.php Bootstrap: do not go gentle into that good night r38411, r38412, and parts of r38389. 2016-08-31 16:31:29 +00:00
load-styles.php Bootstrap: do not go gentle into that good night r38411, r38412, and parts of r38389. 2016-08-31 16:31:29 +00:00
media-new.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
media-upload.php Hooks: Standardize naming of dynamic hooks to use interpolation vs concatenation. 2016-08-22 18:25:31 +00:00
media.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
menu-header.php Docs: Standardize hook docs in wp-admin/* to use third-person singular verbs per the inline documentation standards for PHP. 2016-05-22 18:01:30 +00:00
menu.php Upgrade/Install: Refresh update counts after page load. 2016-10-19 10:27:29 +00:00
moderation.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
ms-admin.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
ms-delete-site.php Multisite: Replace `get_blog_details()` in `/wp-admin/ms-delete-site.php` with `get_site()`. 2016-10-19 05:54:29 +00:00
ms-edit.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
ms-options.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
ms-sites.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
ms-themes.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
ms-upgrade-network.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
ms-users.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
my-sites.php Multisite: Replace `get_blog_details()` in `wp-admin/my-sites.php` with `get_site()`. 2016-10-19 06:02:29 +00:00
nav-menus.php Accessibility: Remove target=_blank from the help tab links on several admin screens. 2016-10-04 20:27:33 +00:00
network.php Text Changes: Unify permission error messages. 2016-06-29 15:16:29 +00:00
options-discussion.php Accessibility: Remove target=_blank from the Settings screens help tabs links. 2016-10-04 06:59:29 +00:00
options-general.php Accessibility: Remove target=_blank from the Settings screens help tabs links. 2016-10-04 06:59:29 +00:00
options-head.php Docs: Standardize on 'backward compatibility/compatible' nomenclature in core inline docs. 2016-05-13 18:41:31 +00:00
options-media.php Accessibility: Remove target=_blank from the Settings screens help tabs links. 2016-10-04 06:59:29 +00:00
options-permalink.php Accessibility: Remove target=_blank from the Settings screens help tabs links. 2016-10-04 06:59:29 +00:00
options-reading.php Accessibility: Remove target=_blank from the Settings screens help tabs links. 2016-10-04 06:59:29 +00:00
options-writing.php Accessibility: Remove target=_blank from the Settings screens help tabs links. 2016-10-04 06:59:29 +00:00
options.php I18N: Introduce a user-specific language setting. 2016-10-03 07:04:29 +00:00
plugin-editor.php Plugins: Correctly display the current plugin in the plugin editor. 2016-10-07 16:58:28 +00:00
plugin-install.php Accessibility: Remove target=_blank from the Plugins, Themes, Media, Update, and Tools screens help tabs links. 2016-10-04 07:08:29 +00:00
plugins.php Accessibility: Remove target=_blank from the Plugins, Themes, Media, Update, and Tools screens help tabs links. 2016-10-04 07:08:29 +00:00
post-new.php I18N: Combine two duplicate "Invalid post type" strings. 2016-07-17 16:05:31 +00:00
post.php Text Changes: Unify permission error messages. 2016-06-29 15:16:29 +00:00
press-this.php Bootstrap: do not go gentle into that good night r38411, r38412, and parts of r38389. 2016-08-31 16:31:29 +00:00
profile.php Don't rely on include_path to include files. 2013-09-25 00:18:11 +00:00
revision.php Accessibility: Remove target=_blank from the Plugins, Themes, Media, Update, and Tools screens help tabs links. 2016-10-04 07:08:29 +00:00
setup-config.php I18N: Correct various instances of incorrect usage of `esc_attr_e()`. 2016-08-28 18:06:30 +00:00
term.php Taxonomy: Introduce more fine grained capabilities for managing taxonomy terms. 2016-09-30 22:40:28 +00:00
theme-editor.php Accessibility: Remove target=_blank from the Plugins, Themes, Media, Update, and Tools screens help tabs links. 2016-10-04 07:08:29 +00:00
theme-install.php Accessibility: Remove target=_blank from the Plugins, Themes, Media, Update, and Tools screens help tabs links. 2016-10-04 07:08:29 +00:00
themes.php Upgrade/Install: Refresh update counts after page load. 2016-10-19 10:27:29 +00:00
tools.php Accessibility: Remove target=_blank from the Plugins, Themes, Media, Update, and Tools screens help tabs links. 2016-10-04 07:08:29 +00:00
update-core.php Upgrade/Install: Refresh update counts after page load. 2016-10-19 10:27:29 +00:00
update.php Bootstrap: do not go gentle into that good night r38411, r38412, and parts of r38389. 2016-08-31 16:31:29 +00:00
upgrade-functions.php Docs: Use 3-digit, x.x.x-style semantic versioning for `_doing_it_wrong()`, `_deprecated_function()`, `_deprecated_argument()`, and `_deprecated_file()` throughout core. 2016-07-06 12:40:29 +00:00
upgrade.php Install/Upgrade: Keep indexing bots away until a site is ready to be seen. 2015-12-08 21:56:27 +00:00
upload.php Accessibility: Remove target=_blank from the Plugins, Themes, Media, Update, and Tools screens help tabs links. 2016-10-04 07:08:29 +00:00
user-edit.php Accessibility: Remove target=_blank from the Users and Widgets screens help tabs links. 2016-10-04 07:10:31 +00:00
user-new.php Accessibility: Remove target=_blank from the Users and Widgets screens help tabs links. 2016-10-04 07:10:31 +00:00
users.php Accessibility: Remove target=_blank from the Users and Widgets screens help tabs links. 2016-10-04 07:10:31 +00:00
widgets.php Accessibility: Remove target=_blank from the Users and Widgets screens help tabs links. 2016-10-04 07:10:31 +00:00