Previously, changing the post thumbnail of a published post in the edit screen
would immediately apply the change, rather than waiting for the post to be
saved before applying the update. This could lead to someone unintentionally
editing the post thumbnail on a published post, and made it impossible to
preview changes to post thumbnails on published posts before saving the change.
This introduces a new Ajax handler, `wp_ajax_get_post_thumbnail_html()` to
retrieve the HTML for the post thumbnail meta box without updating the post
meta value for `_thumbnail_id`. It also allows post thumbnail changes to be
previewed by passing the `_thumbnail_id` as a query variable to the preview
screen and adding a new filter, `_wp_preview_post_thumbnail_filter()`, which
gets applied to `get_post_metadata` during the post preview process.
Props flixos90.
Fixes#12922.
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When `IMAGE_EDIT_OVERWRITE` is set to true, edited image files are
supposed to be deleted when an image is restored to the original.
However, when an image was edited more than once, and then restored,
files created during previous edits were left behind.
Fixes this behavior by updating `wp_save_image()` to clean up
leftover images after each edit when `IMAGE_EDIT_OVERWRITE` is true.
Props bradt, chriscct7, joemcgill.
Fixes#32171.
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Both list tables provide different actions based on where they are loaded, regular admin or network admin. Since there is only one Ajax handler for both screens we have to set the current screen before using the list tables.
Props swissspidy, ocean90.
Fixes#37373.
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Improves the `containFocus()` function to always get the correct first and last
focusable elements, even when the theme browser shows the active theme details.
Also, when on the first and last theme, adds a `disabled` attribute on the
previous and next navigation buttons to make them not focusable.
Fixes#37383.
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* Remove title attributes.
* Show "Install Now" and "Details" links if the importer isn't installed yet.
* Show a "Run Importer" link if the importer is installed. It also handles activation if the plugin isn't activated.
* Add `aria-label` attributes to each link.
* Unify the importer descriptions to make them independent from the plugin state. The API was changed in [meta3690].
* Adjust JavaScript callbacks for ajaxified importer installs.
Props afercia, swissspidy, ocean90.
See #24766.
Fixes#35191.
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[36874] changed the `get_term()` call so that no `$taxonomy` parameter
was passed, as 4.4 made the parameter optional. This change made it
impossible to access a shared term that has not yet been splitr, since
passing an ambiguous `$term_id` to `get_term()` results in an error.
Restoring the `$taxonomy` parameter fixes the regression.
Props alleynoah, dlh.
Fixes#37205.
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* Don't lower memory limit if the current limit is greater than `WP_MAX_MEMORY_LIMIT`.
* Set `WP_MEMORY_LIMIT` and `WP_MAX_MEMORY_LIMIT` to current limit if the `memory_limit` setting can't be changed at runtime.
* Use `wp_convert_hr_to_bytes()` when parsing the value of the `memory_limit` setting because it can be a shorthand or an integer value.
* Introduce `wp_raise_memory_limit( $context )` to raise the PHP memory limit for memory intensive processes. This DRYs up some logic and includes the existing `admin_memory_limit` and `image_memory_limit` filters. The function can also be used for custom contexts, the `{$context}_memory_limit` filter allows to customize the limit.
* Introduce `wp_is_ini_value_changeable( $setting )` to determine whether a PHP ini value is changeable at runtime.
* Remove a `function_exists( 'memory_get_usage' )` check. Since PHP 5.2.1 support for memory limit is always enabled.
Related commits: [38011-38013]
Props jrf, A5hleyRich, swissspidy, ocean90.
Fixes#32075.
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Previously, if a user was added with the checkbox for no confirmation selected and an error was then encountered in `wpmu_activate_signup()`, a fatal error would trigger because `$new_user` was a `WP_Error` object rather than a user.
Fixes#37223.
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`wp_plugin_update_rows()` and `wp_theme_update_rows()` are using the site transients `update_plugins` and `update_themes` which are set by `wp_update_plugins()` and `wp_update_themes()`. Both functions are hooked into `load-plugins.php` and `load-themes.php`. Therefore the update rows need to be registered after the transients were populated.
See #13071.
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Sergey Biryukov
Andrew Ozz
Dominik Schilling
Joe McGill
Mike Schroder
Andrea Fercia
Boone Gorges
Drew Jaynes
Pascal Birchler
Rachel Baker
Jeremy Felt
Gary Pendergast