Commit Graph

92 Commits

Author SHA1 Message Date
Helen Hou-Sandí
89dff37759 Media grid:
* Introduce the concept of bulk editing via a separate mode. Like the list view, only bulk deleting is available. The UI is a little funky, especially with the field display toggles there, but refinements will come.
* Up the max thumbnail size from 120px to 150px.
* Slide-down panel for the add new uploader. Known issue: it doesn't close again.
* Remove the toolbar region in the EditAttachment frame.
* Defer a function call so the grid fills available space.
* Give feedback when no results are found. Also needs styling.

props ericlewis. see #24716.

Built from https://develop.svn.wordpress.org/trunk@29056


git-svn-id: http://core.svn.wordpress.org/trunk@28844 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-07-10 03:50:17 +00:00
Scott Taylor
53bd731570 Media Grid: JSHint fixes.
See #24716. 

Built from https://develop.svn.wordpress.org/trunk@28998


git-svn-id: http://core.svn.wordpress.org/trunk@28786 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-07-04 05:14:15 +00:00
Scott Taylor
6b377e12a0 Media Grid: Use the proper attachment value for uploadedToTitle.
See #24716.

Built from https://develop.svn.wordpress.org/trunk@28997


git-svn-id: http://core.svn.wordpress.org/trunk@28785 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-07-04 05:04:15 +00:00
Scott Taylor
2938a50a28 Media Grid: for audio and video files with covers, show that instead of the icon. The filename is still present with the extension to identify the type.
See #24716.

Built from https://develop.svn.wordpress.org/trunk@28996


git-svn-id: http://core.svn.wordpress.org/trunk@28784 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-07-04 05:00:14 +00:00
Scott Taylor
9a1ac73c34 Make media grid text fields (data) toggle-able. Checking/unchecking is saved in user settings cookie.
See #24716.

Built from https://develop.svn.wordpress.org/trunk@28995


git-svn-id: http://core.svn.wordpress.org/trunk@28783 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-07-04 04:48:15 +00:00
Helen Hou-Sandí
63f9cbd02a Media grid, round 2. Expect much more to come.
* Instead of a sidebar for details, utilize a modal. The modal experience allows for a larger preview, editing images, audio/video previews, and previous/next navigation, like the theme browser. Think of it as an attachment browser.
* Show some details in the grid view to more easily distinguish items.

props ericlewis, wonderboymusic, JerrySarcastic. see #24716.

Built from https://develop.svn.wordpress.org/trunk@28993


git-svn-id: http://core.svn.wordpress.org/trunk@28781 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-07-04 03:39:15 +00:00
Scott Taylor
54915274fa Use the proper height property when calculating video size in wp_underscore_video_template().
Props Fab1en.
See #28190.

Built from https://develop.svn.wordpress.org/trunk@28807


git-svn-id: http://core.svn.wordpress.org/trunk@28616 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-06-23 20:35:18 +00:00
Andrew Ozz
f88149c370 wpView:
- Don't wrap single-line URLs in [embed]. Use them directly in generating a view.
- If the embedding HTML contains a script, "sandbox" it in an iframe to prevent it from changing the editor DOM.
- Automatically add toolbar and overlay when needed.
- Try to embed single-line URLs only if they are pasted in an empty paragraph.
Props avryl, see #28195
Built from https://develop.svn.wordpress.org/trunk@28748


git-svn-id: http://core.svn.wordpress.org/trunk@28562 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-06-12 02:49:16 +00:00
Andrew Ozz
d593293556 Fix JS error in tmpl-editor-gallery, 'string'.trim() is not available in IE < 9. See #28089
Built from https://develop.svn.wordpress.org/trunk@28683


git-svn-id: http://core.svn.wordpress.org/trunk@28501 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-06-06 01:50:16 +00:00
Helen Hou-Sandí
b5ef672c6b Grid view for the media library, first pass. This is alpha; expect imperfection. We will be iterating further.
props ericlewis, shaunandrews, wonderboymusic.
see #24716.

Built from https://develop.svn.wordpress.org/trunk@28682


git-svn-id: http://core.svn.wordpress.org/trunk@28500 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-06-05 22:01:18 +00:00
Helen Hou-Sandí
78d90bd443 At long last, improved keyboard accessibility for the media modal.
props lessbloat, grahamarmfield, sharonaustin, bramd.
see #23560.

Built from https://develop.svn.wordpress.org/trunk@28607


git-svn-id: http://core.svn.wordpress.org/trunk@28431 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-05-29 03:39:15 +00:00
Scott Taylor
3c1723afd7 When adding a URL in the Insert from URL state in the media modal, attempt to show a preview of the content. Drop the unused width and height fields.
This will probably be iterated upon.

Props helen, jtsternberg, wonderboymusic.
See #15490.

Built from https://develop.svn.wordpress.org/trunk@28581


git-svn-id: http://core.svn.wordpress.org/trunk@28406 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-05-26 23:57:14 +00:00
Sergey Biryukov
d970ac80c6 Don't include caption tags in gallery template when there is no caption.
props avryl.
fixes #28089.
Built from https://develop.svn.wordpress.org/trunk@28442


git-svn-id: http://core.svn.wordpress.org/trunk@28269 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-05-15 21:03:15 +00:00
Scott Taylor
558cf6f86d In the Attachment Details section of the media modal, only add box-shadow to images. Other mime-type icons look strange with an arbitrary border.
Props avryl.
Fixes #27949.


Built from https://develop.svn.wordpress.org/trunk@28369


git-svn-id: http://core.svn.wordpress.org/trunk@28197 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-05-11 06:19:14 +00:00
Scott Taylor
f22beb987c First pass at wpview logic for the [embed] shortcode. URLs on a their own line are parsed as well. The toolbar will appear with the "remove" button when the view is clicked. Edit has not been implemented yet.
Props avryl, wonderboymusic.
See #28195.


Built from https://develop.svn.wordpress.org/trunk@28358


git-svn-id: http://core.svn.wordpress.org/trunk@28186 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-05-10 23:36:18 +00:00
Scott Taylor
1daa7d6723 Leverage size_format() when displaying max_upload_size:
* In `media_upload_form()` 
* The `uploader-inline` Underscore template in the media modal. 

Replaces 2 buggy inline implementations that could display size units off by one, or size values off by one.

Fixes #25643.


Built from https://develop.svn.wordpress.org/trunk@28343


git-svn-id: http://core.svn.wordpress.org/trunk@28171 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-05-07 18:25:14 +00:00
Scott Taylor
6deb34ebb3 Alter the layout of the checkboxes in the modal view for Audio/Video Details to allow translations more room to breathe.
See #27893.


Built from https://develop.svn.wordpress.org/trunk@28184


git-svn-id: http://core.svn.wordpress.org/trunk@28015 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-22 20:29:14 +00:00
Scott Taylor
55becc0dfd Refinements for asynchronous rendering in wp.mce.media.PlaylistView:
* Add `visibility: hidden` as an inline style to `<audio>` tags, there is a race with the stylesheet which can get enqueued in the body and loaded in the footer.
* When creating new instances of `MediaElementPlayer`, always push them onto a stack. Lone views can be responsible for multiple instances of the same shortcode on render.
* Rename `wp.media.mixin.unsetPlayer()` to `wp.media.mixin.unsetPlayers()` to reflect the above.
* Call `wp.media.mixin.unsetPlayers()` on the view's `unbind()` method, instead of inline in the `render()` method
* Make sure `WPPlaylistView` is instantiated for each editor instance
* Ensure that the `No Items Found` view state is not rendered when attachments actually do exist.

Props gcorne, wonderboymusic.
See #27899.



Built from https://develop.svn.wordpress.org/trunk@28182


git-svn-id: http://core.svn.wordpress.org/trunk@28013 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-22 17:53:16 +00:00
Andrew Nacin
a8cefa836d Graceful failures for TinyMCE views of video/audio playlists.
props gcorne.
fixes #27821.

Built from https://develop.svn.wordpress.org/trunk@28144


git-svn-id: http://core.svn.wordpress.org/trunk@27975 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-16 00:23:15 +00:00
Andrew Ozz
0df02eb8ea Add hooks to the wpeditimage tinymce plugin and to the image details portion of the media modal.
- Add wp.media.events which is intended to be a global media event bus.
- Add a post-render event to the ImageDetails view that third-party code can leverage to add subviews.
- Performance improvement for the initialization of the PostImage model.
- A bit more markup to the image details template to make it easier to add a view to the advanced options.
Props gcorne, fixes #27698
Built from https://develop.svn.wordpress.org/trunk@28095


git-svn-id: http://core.svn.wordpress.org/trunk@27926 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-13 04:02:15 +00:00
Andrew Nacin
3ff5c2c954 Media Templates: More escaping rather than interpolation. see #21785.
Built from https://develop.svn.wordpress.org/trunk@28039


git-svn-id: http://core.svn.wordpress.org/trunk@27869 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-08 05:28:15 +00:00
Andrew Nacin
6b41f728d4 Header Images: Add suggested dimensions to the media workflow.
props ehg, gcorne.
see #21785.

Built from https://develop.svn.wordpress.org/trunk@28030


git-svn-id: http://core.svn.wordpress.org/trunk@27860 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-08 01:55:15 +00:00
Andrew Nacin
b00e343a25 Gallery Views: Avoid JS errors when image attachments lack metadata.
props gcorne.
fixes #27691.

Built from https://develop.svn.wordpress.org/trunk@28008


git-svn-id: http://core.svn.wordpress.org/trunk@27838 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-07 21:25:16 +00:00
Drew Jaynes
c2e0a4bf46 Space vs tab in function descriptions for wp_underscore_audio_template() and wp_underscore_video_template().
See #27700.

Built from https://develop.svn.wordpress.org/trunk@28003


git-svn-id: http://core.svn.wordpress.org/trunk@27833 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-07 20:29:14 +00:00
Scott Taylor
2c88f6e941 [27640] supported a caption for audio and video shortcodes as part of a UX iteration for the related MCE views. These captions have since be excluded, so the extra code should be removed (it was there for this sole reason).
See #27320.


Built from https://develop.svn.wordpress.org/trunk@27979


git-svn-id: http://core.svn.wordpress.org/trunk@27809 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-07 06:13:18 +00:00
Andrew Nacin
5e79b94d81 Header images: Handle cropping failures.
props ehg.
see #21785.

Built from https://develop.svn.wordpress.org/trunk@27946


git-svn-id: http://core.svn.wordpress.org/trunk@27776 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-04 15:48:16 +00:00
Andrew Ozz
a2e1d9f4c8 Edit Image modal:
- Fix issue with adding a link to an image that didn't have one previously.
- Adjust the look-and-feel of the advance options toggle so that it becomes a section heading that can be open/closed.
- Add a Custom Size option to the size drop-down that reveals fields for soft-resizing the image inserted into the post.
Props gcorne, and props sdasse for the design help, see #27366
Built from https://develop.svn.wordpress.org/trunk@27918


git-svn-id: http://core.svn.wordpress.org/trunk@27748 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-03 03:21:15 +00:00
Andrew Ozz
c7eb5e7f1f Gallery preview: add a "No items found" state which is displayed when rendering the gallery wpview and no attachments are found. Props gcorne, fixes #27558
Built from https://develop.svn.wordpress.org/trunk@27899


git-svn-id: http://core.svn.wordpress.org/trunk@27730 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-02 02:18:15 +00:00
Andrew Ozz
56ede0bad7 Edit Image modal:
- Move all advanced options under a single “Show advanced options” toggle that mirrors the behavior and look-and-feel of the wplink modal.
- Switch to using <select> for the Size and Link To.
- Bring back the field for CSS Class for the image, but don’t incorporate the internally managed WordPress classes (size-, wp-image-, etc…).
- On larger screen sizes, float labels to the left. When the width drops below 900px, stack the label above the fields.
- Keep image at top on screen sizes where the two columns are stacked into a single column.
- Don't replace the nodes in the editor DOM so we don't stomp on any custom attributes that the user may have added via the Text editor or some other mechanism.
Props gcorne, see #27366
Built from https://develop.svn.wordpress.org/trunk@27898


git-svn-id: http://core.svn.wordpress.org/trunk@27729 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-04-02 01:54:15 +00:00
Scott Taylor
98ceb17972 Favor escaping over interpolation in Underscore templates for media. Translate some strings directly instead of passing via JS.
Props nacin.
See #27574.


Built from https://develop.svn.wordpress.org/trunk@27868


git-svn-id: http://core.svn.wordpress.org/trunk@27699 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-31 05:13:15 +00:00
Scott Taylor
eec578abcd When creating a new playlist, we don't know from the model what "type" it is right away (there is no longer a video-playlist shortcode) - we need to check the controller's library's prop for type when deciding what settings to display in the modal.
See #27535.


Built from https://develop.svn.wordpress.org/trunk@27812


git-svn-id: http://core.svn.wordpress.org/trunk@27646 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-28 12:37:15 +00:00
Andrew Ozz
60435c4143 Edit Image modal:
- Bring back some of the advanced settings.
- Make the layout two-column for wider screens, remove the sidebar, and shrink the modal a bit.
- The image reflects the size as inserted in the post as long as it doesn't overflow the column and is not too tall. Changing the size to another intermediate will also update the image "preview."
- Rename "Edit Image" to "Edit Original" to try and better communicate that editing the image will modify the media library item not just the image inserted into the post that is being edited.
(updates two PNGs from precommit)
Props gcorne, see #27366
Built from https://develop.svn.wordpress.org/trunk@27797


git-svn-id: http://core.svn.wordpress.org/trunk@27632 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-27 22:41:14 +00:00
Scott Taylor
703f6fcc49 When labeling Show Tracklist for playlist settings, use Show Video List when the playlist is video.
Fixes #27535.


Built from https://develop.svn.wordpress.org/trunk@27796


git-svn-id: http://core.svn.wordpress.org/trunk@27631 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-27 21:10:15 +00:00
Scott Taylor
1d6f31dc52 Remove tracknumbers from the UI, can still be overridden as a playlist shortcode attribute.
See #27535.


Built from https://develop.svn.wordpress.org/trunk@27793


git-svn-id: http://core.svn.wordpress.org/trunk@27629 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-27 20:27:15 +00:00
Scott Taylor
4f868ad882 There is no more video-playlist shortcode. To use video, it is now [playlist type="video" ....]. Also deleting core playlist styles. The style attribute is still supported, defaulting to light. Our core style support was 4-5 CSS rules.
See #27552. Leaving open for comments and potential bugs.


Built from https://develop.svn.wordpress.org/trunk@27785


git-svn-id: http://core.svn.wordpress.org/trunk@27621 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-27 17:58:15 +00:00
Helen Hou-Sandí
443ab3001e MCE view controls:
* Move controls back over to the left, as they were before. Wide images and muscle memory have been causing frustration.
* Improve the experience and unify the UI of media view controls. Audio and video views now require an initial click to select before further interaction.
* CSS clean up and organization.

fixes #27320, #27542.

Built from https://develop.svn.wordpress.org/trunk@27777


git-svn-id: http://core.svn.wordpress.org/trunk@27614 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-27 07:02:16 +00:00
Scott Taylor
76ac10ba11 Don't display the "Show Artist Name in Tracklist" input in settings for Video Playlists.
See #27535.


Built from https://develop.svn.wordpress.org/trunk@27751


git-svn-id: http://core.svn.wordpress.org/trunk@27588 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-26 22:12:16 +00:00
Scott Taylor
eddc48def7 Don't make mce-view a dependency for media-audiovideo. Make media-audiovideo and wp-playlist dependencies for mce-view and only enqueue mce-view in the admin in wp_enqueue_media(). MCE views don't need to be included when media is loaded on the front end.
Fixes #27509.


Built from https://develop.svn.wordpress.org/trunk@27733


git-svn-id: http://core.svn.wordpress.org/trunk@27570 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-26 12:11:14 +00:00
Drew Jaynes
7dc9b02577 Correct misleading verbiage in 'print' hook docs.
Standardizes 'print' hook docs on the concept that hooks are fired when scripts and styles are printed.

Props ericlewis for the initial patch.
Fixes #26924.

Built from https://develop.svn.wordpress.org/trunk@27695


git-svn-id: http://core.svn.wordpress.org/trunk@27534 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-25 08:05:15 +00:00
Scott Taylor
86f4061b26 When an HTML5 fallback button is pressed in the Audio or Video Details state, filter the library by that specific mime-type when the Add Audio|Video Source is activated.
See #27389.


Built from https://develop.svn.wordpress.org/trunk@27658


git-svn-id: http://core.svn.wordpress.org/trunk@27501 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-23 03:16:14 +00:00
Andrew Ozz
960b8f86ef Move the styling of drag/drop on the editor uploading to media-views.css, see #27465
Built from https://develop.svn.wordpress.org/trunk@27656


git-svn-id: http://core.svn.wordpress.org/trunk@27499 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-23 01:42:15 +00:00
Scott Taylor
410646fc52 General code cleanup and improving video sizing in the admin:
* Abstract the setting of a primary button and its callback in `wp.media.view.MediaFrame.MediaDetails`
* Account for the existence or non-existence of `$content_width` in the TinyMCE views for video
* Make sure video models always have dimensions, even if they are the defaults
* For browsers that are not Firefox, don't use a timeout when setting the `MediaElementPlayer` instance in TinyMCE views

See #27320.


Built from https://develop.svn.wordpress.org/trunk@27655


git-svn-id: http://core.svn.wordpress.org/trunk@27498 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-22 23:26:17 +00:00
Andrew Nacin
aef7cdd59a Merge two strings. see #27320, #27453.
Built from https://develop.svn.wordpress.org/trunk@27645


git-svn-id: http://core.svn.wordpress.org/trunk@27488 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-21 00:19:16 +00:00
Scott Taylor
615dd5331b Unifying media controls and supporting playlists in the editor:
* Support a `caption` attribute for audio and video shortcodes
* In `wp.media.audio|video`, rename `update` to `shortcode` to allow these models to share the same mixins as `wp.media.collection` subclasses
* When sending an audio or video shortcode to the editor, create a default caption if the user hasn't entered one. This currently only displays in the editor, not on the front end. Captions aren't tied to a specific attachment here because external sources are supported.
* In the `wp.mce.media` mixin, in the `edit` method, read `attr` instead of `data` when attempting to parse the encoded shortcode. `data` does not automatically update when the attribute changes. This was a blessing to debug.
* Add `wp.mce.media.PlaylistView` to support playlist views in TinyMCE
* Expose `WPPlaylistView` to global scope and suppress auto-parsing of playlist nodes when in the admin. Allow `WPPlaylistView` to be passed `metadata` on creation instead of requiring a JSON blob to be parsed.
* Remove all of the playlist logic from the `wpgallery` TinyMCE plugin.
* In `wp_prepare_attachment_for_js()` return more data for audio/video so that playlists can have parity in the admin/front end.

See #27320.


Built from https://develop.svn.wordpress.org/trunk@27640


git-svn-id: http://core.svn.wordpress.org/trunk@27483 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-20 13:33:14 +00:00
Helen Hou-Sandí
bef7f9e75e Further unify and refine media and view control styling. see #27320.
Built from https://develop.svn.wordpress.org/trunk@27628


git-svn-id: http://core.svn.wordpress.org/trunk@27471 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-20 00:48:15 +00:00
Andrew Nacin
30fd56b3dc Only enqueue the image editor in the media modal in the admin.
props gcorne.
see #21811.

Built from https://develop.svn.wordpress.org/trunk@27625


git-svn-id: http://core.svn.wordpress.org/trunk@27468 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-19 21:16:14 +00:00
Andrew Nacin
deb8779af5 More translation cleanups.
Affects widgets (see #27112), custom headers (see #21785), theme installer (see #27055, reverts [27614]), and some media stuff. Untranslates some complicated strings that need additional study.

see #27453.

Built from https://develop.svn.wordpress.org/trunk@27620


git-svn-id: http://core.svn.wordpress.org/trunk@27463 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-19 08:18:14 +00:00
Scott Taylor
7ad4205f70 Add MCE views for audio and video shortcodes. When the shortcode does not contain a source that supports native playback, just show the filename.
* Remove the audio/video shortcode parsing from the `wpgallery` plugin.
* Make `mce-view` a dependency of `media-audiovideo`
* Introduce `wp.mce.video`, `wp.mce.audio`, `wp.mce.media`, and `wp.mce.media.View`
* Rename `wp.media.audio|video.shortcode()` to `wp.media.audio|video.update()` since it is called on Update and returns a `wp.shortcode` object now.
* In `wp.mce.View.render()`, fire a `ready` event when the placeholder is being parsed and pass the current node to the event handler.

See #27389, #27437.


Built from https://develop.svn.wordpress.org/trunk@27615


git-svn-id: http://core.svn.wordpress.org/trunk@27458 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-19 07:02:15 +00:00
Scott Taylor
a17dd704c4 Create a new file, media-audiovideo.js, to house all of the audio and video JS code in core.
UX Changes:
* Don't add a menu item for "Add Audio|Video Source"
* In the Audio|Video Details modal, add buttons and some suggestive text for adding alternate playback sources
* Don't show "Create Audio|Video Playlist" menu items until the user has uploaded audio or video files

See #27437.


Built from https://develop.svn.wordpress.org/trunk@27608


git-svn-id: http://core.svn.wordpress.org/trunk@27451 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-19 05:31:15 +00:00
Andrew Ozz
46a471489e TinyMCE gallery preview: fix errors when an image doesn't have/is smaller than thumbnail size, props gcorne, see #26959
Built from https://develop.svn.wordpress.org/trunk@27580


git-svn-id: http://core.svn.wordpress.org/trunk@27423 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2014-03-18 03:25:14 +00:00