Commit Graph

536 Commits

Author SHA1 Message Date
Sergey Biryukov 5289e92ef5 Rename `$instances` to `$instance` in wp_audio_shortcode() and wp_video_shortcode() for consistency with gallery_shortcode() and wp_playlist_shortcode().
see #31151.
Built from https://develop.svn.wordpress.org/trunk@31305


git-svn-id: http://core.svn.wordpress.org/trunk@31286 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-01-30 16:06:22 +00:00
Sergey Biryukov fa86f3ef9c Pass the current shortcode instance ID to `post_gallery` and `post_playlist` filters.
props justincwatt.
fixes #31151.
Built from https://develop.svn.wordpress.org/trunk@31304


git-svn-id: http://core.svn.wordpress.org/trunk@31285 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-01-30 16:02:21 +00:00
Sergey Biryukov 247cdad571 attachment_url_to_postid() should always return an integer.
props nathan_dawson, ashfame.
fixes #31044.
Built from https://develop.svn.wordpress.org/trunk@31239


git-svn-id: http://core.svn.wordpress.org/trunk@31220 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-01-18 20:33:23 +00:00
Scott Taylor fc843ce4d0 There are some random `add_action()` and `add_filter()` calls littered around some files in `wp-includes/`. These should be moved to `wp-includes/default-filters.php` with the rest of the registered hooks. It seems like this was the best practice for awhile and then we randomly stopped. This file loads way before any of the includes, so the hooks will be registered for any request that loads WordPress, even `SHORTINIT` - a lot of the hooks registered won't run anyways (that's already the case).
See #30947.

Built from https://develop.svn.wordpress.org/trunk@31168


git-svn-id: http://core.svn.wordpress.org/trunk@31149 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-01-12 16:40:23 +00:00
Sergey Biryukov 24b3ee8680 Make a hint on Edit Selection view in media modal more accurate, as it applies to all media files, not just images.
props pavelevap.
see #30931.
Built from https://develop.svn.wordpress.org/trunk@31102


git-svn-id: http://core.svn.wordpress.org/trunk@31083 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-01-08 21:24:23 +00:00
Scott Taylor 4feecb922c Use `&&` instead of `and` in the 3 places where `and` was used.
See #30799.

Built from https://develop.svn.wordpress.org/trunk@31099


git-svn-id: http://core.svn.wordpress.org/trunk@31080 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-01-08 21:12:22 +00:00
Scott Taylor 60b0cd7943 The keyword `elseif` should be used instead of `else if` so that all control keywords look like single words.
This was a mess, is now standardized across the codebase, except for a few 3rd-party libs. 

See #30799.

Built from https://develop.svn.wordpress.org/trunk@31090


git-svn-id: http://core.svn.wordpress.org/trunk@31071 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-01-08 07:05:25 +00:00
Scott Taylor a5593a64d3 More-specific docs for `wp_embed_handler_youtube()`.
Fixes #30711.

Built from https://develop.svn.wordpress.org/trunk@31018


git-svn-id: http://core.svn.wordpress.org/trunk@30999 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-01-01 19:21:27 +00:00
Scott Taylor 952a5c9971 Support chromeless Vimeo via MEjs:
* Bump MediaElement script loader versions to 2.16.2 - missed in [30634], oops!
* Add `Froogaloop` to `js/mediaelement` scripts for Vimeo
* Check for Vimeo in the same locations that YouTube is checked
* Dynamically load Froogaloop script in admin when editing a TinyMCE view
* Edit MediaElement to call `mejs.$.extend` instead of `$.extend` in `mejs.HtmlMediaElementShim.createPlugin()`, since `$` is not available via WP's jQuery (I will report this upstream):
6f9a78e008/src/js/me-shim.js (L631)

Fixes #29267.

Built from https://develop.svn.wordpress.org/trunk@31016


git-svn-id: http://core.svn.wordpress.org/trunk@30997 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-12-31 20:41:24 +00:00
Scott Taylor 5eb5afac34 For clarity, initialize some arrays that previously were only assigned via short circuit in loops.
See #30799.

Built from https://develop.svn.wordpress.org/trunk@30982


git-svn-id: http://core.svn.wordpress.org/trunk@30968 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-12-20 22:47:22 +00:00
Scott Taylor a0df295f5c Improve various `@param` docs.
See #30224.

Built from https://develop.svn.wordpress.org/trunk@30674


git-svn-id: http://core.svn.wordpress.org/trunk@30664 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-30 23:24:25 +00:00
Scott Taylor ce05e4932f Use `round()` instead of `floor()` when resizing image dimensions.
Updates unit tests.

Props SergeyBiryukov, kitchin.
Fixes #18532.

Built from https://develop.svn.wordpress.org/trunk@30660


git-svn-id: http://core.svn.wordpress.org/trunk@30650 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-30 19:54:23 +00:00
Drew Jaynes bffe95d34c Docs Formatting: Backtick-escape inline code for all remaining dynamic hook docs in wp-includes/*.
Affects DocBlocks for the following hooks:
* `auth_post_meta_{$meta_key}`
* `term_links-$taxonomy`
* `customize_render_control_ . $this->id`
* `customize_render_panel_{$this->id}`
* `customize_render_section_{$this->id}`
* `customize_preview_{$this->id}`
* `customize_save_ . $this->id_data[ 'base' ]`
* `customize_update_ . $this->type`
* `customize_value_ . $this->id_data[ 'base' ]`
* `customize_sanitize_js_{$this->id}`
* `comment_form_field_{$name}`
* `comment_{$old_status}_to_{$new_status}`
* `comment_{$new_status}_{$comment->comment_type}`
* `extra_{$context}_headers`
* `get_template_part_{$slug}`
* `get_the_generator_{$type}`
* `get_{$adjacent}_post_join`
* `get_{$adjacent}_post_where`
* `get_{$adjacent}_post_sort`
* `{$adjacent}_post_rel_link`
* `{$adjacent}_post_link`
* `{$adjacent}_image_link`
* `blog_option_{$option}`
* `$permastructname . _rewrite_rules`
* `{$type}_template`
* `theme_mod_{$name}`
* `pre_set_theme_mod_$name`
* `current_theme_supports-{$feature}`
* `get_user_option_{$option}`
* `edit_user_{$field}`
* `pre_user_{$field}`
* `user_{$field}`

See #30552.

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git-svn-id: http://core.svn.wordpress.org/trunk@30646 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-30 12:10:23 +00:00
Drew Jaynes 2f6c0d5e96 Improve inline documentation for `image_constrain_size_for_editor()`.
Includes:
* Proper formatting, plus adding a type for the `$context` parameter
* Inline `@see` tags in the description and backtick-escaping inline code
* Parameter, type, and description alignment

Props tillkruess for the initial patch.
Fixes #30508.

Built from https://develop.svn.wordpress.org/trunk@30646


git-svn-id: http://core.svn.wordpress.org/trunk@30636 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-30 10:06:23 +00:00
Scott Taylor 5352f51516 Fix edge-case in media cropping where selection and destination are the same size.
Adds unit tests.

Props mboynes.
Fixes #19793.

Built from https://develop.svn.wordpress.org/trunk@30639


git-svn-id: http://core.svn.wordpress.org/trunk@30629 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-30 06:27:23 +00:00
Drew Jaynes 1e10385a90 Remove an invalid parameter from the DocBlock for the `gallery_style` hook.
Props keesiemeijer.
Fixes #30507.

Built from https://develop.svn.wordpress.org/trunk@30635


git-svn-id: http://core.svn.wordpress.org/trunk@30625 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-30 05:58:47 +00:00
Drew Jaynes c512f1d916 Remove return descriptions from the DocBlocks for `add_image_size()` and `set_post_thumbnail_size()` as they don't return anything.
Also document the `$_wp_additional_image_sizes` global, leveraged in `add_image_size()`.

Props stevegrunwell.
Fixes #30511.

Built from https://develop.svn.wordpress.org/trunk@30633


git-svn-id: http://core.svn.wordpress.org/trunk@30623 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-30 05:49:23 +00:00
Drew Jaynes b8c612ca1c Ensure inline code is markdown-escaped as such, HTML tags are removed from summaries, and that code snippets in descriptions are properly indented.
Affects DocBlocks for the following core elements:
* Markdown-indent a code snippet in the file header for wp-admin/install-helper.php
* Add markdown formatting and two inline `@see` tags to the description for `translate()`
* Markdown-indent a code snippet in the description for `_n_noop()`
* Remove HTML tags from the summary for `get_media_embedded_in_content()`
* Remove an HTML tag from the summary for `wpview_media_sandbox_styles()`

Props rarst.
See #30473.

Built from https://develop.svn.wordpress.org/trunk@30542


git-svn-id: http://core.svn.wordpress.org/trunk@30531 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-24 05:47:23 +00:00
Sergey Biryukov 8f2842a07e Replace invalid use of ltrim() in attachment_url_to_postid() with substr().
props bradyvercher.
fixes #30346.
Built from https://develop.svn.wordpress.org/trunk@30501


git-svn-id: http://core.svn.wordpress.org/trunk@30490 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-21 06:35:22 +00:00
Andrew Nacin c2f334bf3c Playlists are video by default. props duck_
Built from https://develop.svn.wordpress.org/trunk@30422


git-svn-id: http://core.svn.wordpress.org/trunk@30417 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-20 13:11:23 +00:00
Dominik Schilling 52f51d65ae Media: Remove another unused string.
props pavelevap.
see #29741.
Built from https://develop.svn.wordpress.org/trunk@30342


git-svn-id: http://core.svn.wordpress.org/trunk@30341 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-14 17:46:22 +00:00
Dominik Schilling f34d3b1b5a Media: Remove unused string.
props pavelevap.
fixes #29741.
Built from https://develop.svn.wordpress.org/trunk@30341


git-svn-id: http://core.svn.wordpress.org/trunk@30340 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-14 17:31:23 +00:00
Scott Taylor 15c062eb79 In `wp_audio|video_shortcode()`, make sure that `autoplay` and `loop` are booleans. Passing `'false'` to them will force them to be active, which is bad.
Fixes #29825.

Built from https://develop.svn.wordpress.org/trunk@30185


git-svn-id: http://core.svn.wordpress.org/trunk@30185 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-03 05:03:21 +00:00
Scott Taylor cd9bb04981 In `gallery_shortcode()`, when the `link` attribute is equal to `file`, make sure to pass `$attr` as the 6th (!) argument, not 5th, to `wp_get_attachment_link()`.
Props bradyvercher.
Fixes #27402.

Built from https://develop.svn.wordpress.org/trunk@30161


git-svn-id: http://core.svn.wordpress.org/trunk@30161 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-11-01 21:47:24 +00:00
Drew Jaynes 66c47f29bb Correct references of `@uses $wpdb` in core documentation to use `@global`.
See #30191, [30105].
Fixes #30217.

Built from https://develop.svn.wordpress.org/trunk@30122


git-svn-id: http://core.svn.wordpress.org/trunk@30122 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-10-31 17:56:22 +00:00
Drew Jaynes f8657d5890 Remove redundant and erroneous `@uses` tag from most core inline documentation.
Per our inline documentation standards, no further use of the `@uses` tag is recommended as used and used-by relationships can be derived through other means. This removes most uses of the tag in core documentation, with remaining tags to be converted to `@global` or `@see` as they apply.

Fixes #30191.

Built from https://develop.svn.wordpress.org/trunk@30105


git-svn-id: http://core.svn.wordpress.org/trunk@30105 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-10-30 01:05:24 +00:00
Scott Taylor 3d8e31fb82 Don't hardcode `height` for videos - this was a workaround for MediaElement internals causing problems. Responsive videos now work properly and don't cause extra whitespace.
Fixes MediaElement by hand in the interim: https://github.com/johndyer/mediaelement/pull/1337
Video playlists were completely broken by this.

Fixes #30078.


Built from https://develop.svn.wordpress.org/trunk@30082


git-svn-id: http://core.svn.wordpress.org/trunk@30082 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-10-29 00:47:24 +00:00
Scott Taylor 5d17d2bd28 The `gallery` shortcode used to accept a SQL chunk for the value of the `orderby` attribute. The reason? `get_posts()` used to be called in the shortcode handler with a query-string blob of arguments passed to it. To mitigate breakage, `sanitize_sql_orderby()` was created in [7592].
`sanitize_sql_orderby()` expects a comma to be present when multiple `orderby` values were passed. The correct syntax for multiple fields is space-delimited. Since [29027], comma-separated values would never be parsed correctly when passed to `WP_Query->parse_orderby()`.

`sanitize_sql_orderby()` is used nowhere else in core, save for the `playlist` shortcode - I only added it there because I was mimic'ing the `gallery` logic. The function call can be removed from both shortcode handlers.
 
See #6476.
Fixes #23873.

Built from https://develop.svn.wordpress.org/trunk@30068


git-svn-id: http://core.svn.wordpress.org/trunk@30068 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-10-28 20:43:22 +00:00
Gary Pendergast 007ec52958 Add `wp_json_encode()`, a wrapper for `json_encode()` that ensures everything is converted to UTF-8.
Change all core calls from `json_encode()` to `wp_json_encode()`.

Fixes #28786.


Built from https://develop.svn.wordpress.org/trunk@30055


git-svn-id: http://core.svn.wordpress.org/trunk@30055 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-10-28 18:35:19 +00:00
Scott Taylor 72d12b514d Add a 6th (!) attribute to `wp_get_attachment_link()` to allow `aria-describedby` to be added to gallery output.
Props joedolson, DrewAPicture, rianrietveld.
Fixes #27402.

Built from https://develop.svn.wordpress.org/trunk@29914


git-svn-id: http://core.svn.wordpress.org/trunk@29667 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-10-16 04:28:17 +00:00
Sergey Biryukov 45062d7f5c Update @param docs for wp_get_attachment_image().
see #29869.
Built from https://develop.svn.wordpress.org/trunk@29837


git-svn-id: http://core.svn.wordpress.org/trunk@29601 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-10-05 17:52:15 +00:00
Sergey Biryukov d769e29279 Pass the requested size to 'wp_get_attachment_image_attributes' filter.
props mattheu.
fixes #29869.
Built from https://develop.svn.wordpress.org/trunk@29836


git-svn-id: http://core.svn.wordpress.org/trunk@29600 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-10-05 17:50:16 +00:00
Andrew Ozz 7a55ab9164 Media: disable multi-file uploading in iOS 7.x Safari as it prevents uploading of videos. Fixes #29602 for trunk.
Built from https://develop.svn.wordpress.org/trunk@29776


git-svn-id: http://core.svn.wordpress.org/trunk@29548 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-29 00:14:18 +00:00
Sergey Biryukov 10e0807cce Add context for 'Trash' string in media modal.
props pavelevap.
fixes #29739.
Built from https://develop.svn.wordpress.org/trunk@29764


git-svn-id: http://core.svn.wordpress.org/trunk@29536 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-24 13:49:20 +00:00
Scott Taylor ee9d74dc05 Ordering by `RAND()`:
The shortcode callbacks for `gallery` and `playlist` check for `'RAND' == $atts['order']`, which isn't a valid value for `order`. Remove those checks and update the docs.

In `WP_Query`, if the value of `orderby` is `rand`, `order` is irrelevant and should be unset.

Adds unit tests.

Fixes #29629.

Built from https://develop.svn.wordpress.org/trunk@29760


git-svn-id: http://core.svn.wordpress.org/trunk@29532 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-23 03:52:15 +00:00
Sergey Biryukov 2008fc0c89 Correct 'wp_get_attachment_image_attributes' filter docs.
props tillkruess.
fixes #29701.
Built from https://develop.svn.wordpress.org/trunk@29750


git-svn-id: http://core.svn.wordpress.org/trunk@29522 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-18 12:36:17 +00:00
Andrew Ozz 69e7171f41 Media: revert enabling of multi-file uploading for mobile devices. Currently only iOS Safari supports it but has a bug that prevents uploading of videos. Fixes #29602
Built from https://develop.svn.wordpress.org/trunk@29729


git-svn-id: http://core.svn.wordpress.org/trunk@29503 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-10 22:40:16 +00:00
Sergey Biryukov 0113d3457b Avoid PHP notices in media modal caused by orphaned attachments.
fixes #29566 for trunk.
Built from https://develop.svn.wordpress.org/trunk@29724


git-svn-id: http://core.svn.wordpress.org/trunk@29498 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-09 10:03:14 +00:00
Andrew Nacin e496cc6e4b Media: Ensure media-views is enqueued and registered before localizing.
fixes #24724.

Built from https://develop.svn.wordpress.org/trunk@29678


git-svn-id: http://core.svn.wordpress.org/trunk@29453 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-02 19:36:16 +00:00
Andrew Ozz 703b625820 Media: add a class to the <script> tag for the JSON encoded playlist data so it can be easily selected in WPPlaylistView. Props SergeyBiryukov, fixes #29383
Built from https://develop.svn.wordpress.org/trunk@29660


git-svn-id: http://core.svn.wordpress.org/trunk@29434 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-01 19:55:18 +00:00
Helen Hou-Sandí 72593add22 Media grid: Don't show a misleading message for an empty library.
This uses the existing string from the list table. We should revisit a better overall experience for the two situations (empty library vs. search with no results) in 4.1.

props voldemortensen.
fixes #29404.

Built from https://develop.svn.wordpress.org/trunk@29655


git-svn-id: http://core.svn.wordpress.org/trunk@29429 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-09-01 18:39:17 +00:00
Scott Taylor 149346ff6e MCE View sandboxes:
* Use a `MutationObserver` to listen to the `body` class of the parent editor frame.
* In `wpview_media_sandbox_styles()`, only return the MEjs stylesheets.
* In `wp_ajax_parse_media_shortcode()` and `wp_ajax_parse_embed()`, return an object instead of an HTML blob to allow passing `body` and `head` separately	

Props avryl, azaozz.
Fixes #29048.

Built from https://develop.svn.wordpress.org/trunk@29615


git-svn-id: http://core.svn.wordpress.org/trunk@29389 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-26 04:46:15 +00:00
Scott Taylor d6213d64a5 After [29543], the iframe sandboxes for media need to load Open Sans. Playlists look aggressively bad without it. Adds font styles for the body.
See #29048.

Built from https://develop.svn.wordpress.org/trunk@29564


git-svn-id: http://core.svn.wordpress.org/trunk@29338 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-21 03:36:16 +00:00
Andrew Ozz 53c047263b TinyMCE wpView: add a filter for the stylesheet URLs loaded in the sandbox iframes. See #29048.
Built from https://develop.svn.wordpress.org/trunk@29559


git-svn-id: http://core.svn.wordpress.org/trunk@29334 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-20 21:34:15 +00:00
Andrew Ozz afdb25bd56 TinyMCE wpView sandbox iframes:
- Make them transparent.
- Don't load tons of unrelated styles that can break them. This could result in minimal styling mismatch to the front-end, but keeps the views working well and looking good.
Props avryl, fixes #29048.
Built from https://develop.svn.wordpress.org/trunk@29543


git-svn-id: http://core.svn.wordpress.org/trunk@29319 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-19 21:53:15 +00:00
Sergey Biryukov 6b3a4e6ddd Media Grid: Use an existing string for posts without a title.
see #24716.
Built from https://develop.svn.wordpress.org/trunk@29493


git-svn-id: http://core.svn.wordpress.org/trunk@29271 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-14 21:41:16 +00:00
Scott Taylor b0c782bf08 Media Grid, support `MEDIA_TRASH`: add AYS to bulk actions.
See #29145.

Built from https://develop.svn.wordpress.org/trunk@29492


git-svn-id: http://core.svn.wordpress.org/trunk@29270 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-14 19:08:14 +00:00
Scott Taylor 571111022e Media Grid, support `MEDIA_TRASH`:
* Add a setting to `_wpMediaViewsL10n.settings`: `mediaTrash`
* In the attachment edit modal, properly toggle between Trash/Untrash
* In `media.view.Attachment`, add a method for `untrashAttachment`
* When creating the grid toolbar, switch the setting order of subviews so that `media.view.DeleteSelectedButton` can listen to the instance of `media.view.AttachmentFilters.All` to update the text in its UI.
* Add a new filter to `media.view.AttachmentFilters.All`, `trash`, when `settings.mediaTrash` is true
* Allow the cached queries in `Query.get()` to be flushed when race conditions exist and collections need to be refreshed. This is currently only being used when `MEDIA_TRASH` is set, to refresh the filtered/mirrored collections related to `all`, `trash`, and any already queried filter.
* Cleanup the bootstrapping of `media.view.MediaFrame.Manage`
* Allow `wp_ajax_query_attachments()` to return items from the trash when `MEDIA_TRASH` is `true`
* Allow `wp_ajax_save_attachment()` to set `post_status` when `MEDIA_TRASH` is `true`. It allows `wp_delete_post()` to be called, which will trash the attachment instead of deleting when the flag is set.

Props koop for the knowledge sharing and thought partnership.
See #29145.

Built from https://develop.svn.wordpress.org/trunk@29490


git-svn-id: http://core.svn.wordpress.org/trunk@29268 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-14 18:31:19 +00:00
Helen Hou-Sandí 82a69241f1 Remove now-unused strings. see #28842.
Built from https://develop.svn.wordpress.org/trunk@29486


git-svn-id: http://core.svn.wordpress.org/trunk@29264 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-14 04:23:16 +00:00
Scott Taylor 9c08ad236a Media Grid: add Bulk Selection mode for deleting attachments.
* Toolbar is sticky when `select` mode is active
* Selection is toggled when clicking an attachment preview
* Unselected attachments fade out, selected fade in.

See #28842.

Built from https://develop.svn.wordpress.org/trunk@29484


git-svn-id: http://core.svn.wordpress.org/trunk@29262 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-08-13 22:45:15 +00:00