`_wp_array_get()` is an expensive function, and it's called thousands of times on each page view on the front end. While the function performance was slightly improved in #58376, it is still called more times than it should be.
This commit aims to further optimize its usage:
* In many cases, `_wp_array_get()` can be replaced with a much simpler and faster `isset()` check.
* The `isset()` function is capable of checking nested arrays, so `isset( $foo['a']['b']['c'] )` will return false even if `$foo['a']` is unset, without throwing any errors or warnings.
* When `_wp_array_get()` cannot be directly replaced with `isset()`, it would be good practice to wrap it in an `isset()` function so that `_wp_array_get()` only runs when it needs to.
Original PR from Gutenberg repository:
* [https://github.com/WordPress/gutenberg/pull/51116#51116 Performance improvement: Reduce the use of the _wp_array_get() function]
Follow-up to [55851], [56382].
Props aristath, jrf, spacedmonkey, mukesh27, swissspidy, hellofromTonya.
Fixes#59405.
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Most block feature checks are for a single feature string, and for such cases it is not intuitive to require an array for the `$feature` parameter of the `block_has_support()` function.
This changeset brings it in line with other functions like `post_type_supports()`, allowing to pass a string for the `$feature`. An array is still supported for more complex cases where support for sub-features needs to be determined. This change furthermore includes a very minor performance tweak by avoiding calls to the `_wp_array_get()` function if a single feature string is being checked for.
Props thekt12, nihar007, mukesh27, swissspidy.
Fixes#58532.
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With the minimum PHP version requirement raised to 7.0, we can now use `isset` on constants that are arrays. Since `isset` is slightly faster than `array_key_exists` (and the different handling of `null` values is irrelevant for the updates here), remaining instances of `array_key_exists` in the `WP_Theme_JSON` class are replaced in this changeset.
Props soean.
Fixes#57067.
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Restructures the block.json selectors API by moving `__experimentalSelector` props into their own config, stabilizing the selectors API, and enabling more flexible styling options.
Props ramonopoly, spacedmonkey, aaronrobertshaw, onemaggie.
Fixes#58586.
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This changeset adds `description` to `VALID_TOP_LEVEL_KEYS` in `class-wp-theme-json.php` to allow for accessibility improvements. The description is added to
the ARIA label of the style variation container. If the style variation has no description, only the title is used. One purpose is to use the text description
to improve the style variation preview in the WordPress.org theme directory.
See https://github.com/WordPress/gutenberg/pull/45242.
Props ramonopoly, poena.
Fixes#58614.
--Cette ligne, et les suivantes ci-dessous, seront ignorées--
M trunk/src/wp-includes/class-wp-theme-json.php
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This aims to make the code more readable and consistent, as the function is already used extensively in core files.
WordPress core includes a polyfill for `str_starts_with()` on PHP < 8.0 as of WordPress 5.9.
Follow-up to [55703], [55959].
Props spacedmonkey.
Fixes#58012.
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The `WP_Theme_JSON::append_to_selector()` method was previously used for both appending and prepending which violated the single responsibility principle. It resulted in additional conditionals which also came at a performance cost, particularly because the method is called over 1,000 times during a regular WordPress request.
With the new `WP_Theme_JSON::prepend_to_selector()` method, there are now two distinct methods for the two distinct purposes. The now useless third parameter on `WP_Theme_JSON::append_to_selector()` has been removed (rather than deprecated), which is acceptable given that it is a protected method on a class that is not intended for extensions.
Props bor0, costdev, flixos90, isabel_brison, oandregal, spacedmonkey.
Fixes#58193.
See #58457.
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This PR makes sure unregistered block style variations declared via `theme.json` are ignored. It fixes an issue by style variations don't work in the editor and CSS rules without a selector are output to the front-end.
Props isabel_brison.
Fixes#58462.
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Improve `append_to_selector` method in `WP_Theme_JSON` by checking to see if string contains a common before imploding / exploding string, which improves performance.
Originally developed and tested in [WordPress/gutenberg#47833 Gutenberg PR 47833].
Props spacedmonkey, flixos90, mukesh27, joemcgill, wildworks, oandregal, mamaduka.
Fixes#58231.
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Layout style properties are stored using indirect values, rather than direct CSS properties.
Allow users without the `unfiltered_html` capability to modify global styles using the indirect block spacing properties `contentSize`, `wideSize`, and `blockGap`, using a mapping of the eventual CSS property to the indirect property stored in `theme.json`. The mapped CSS property is then used for CSS validation.
Props andrewserong, costdev, hellofromtonya, mamaduka, mmtr86.
Fixes#57321.
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In the Gutenberg plugin, a position block support feature was introduced last year, that allows a Group block to be set to a "sticky" position, meaning that when the page scrolls, the block will stick to the top of the window.
This change merges the "sticky" position feature for blocks introduced in Gutenberg 15.0.
Props andrewserong, flixos90, mukesh27.
Fixes#57618.
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This commit adds block-level settings in the core. Block level settings allow a block to define the preset settings of its nested blocks using the same shape as theme.json.
Props oandregal, Mamaduka, jorgefilipecosta, dmsnell, adamziel.
57651 #57651.
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This changeset introduces functions `wp_get_global_styles_custom_css()` and `wp_enqueue_global_styles_custom_css()`, which allow accessing and enqueuing custom CSS added via global styles.
Custom CSS via global styles is handled separately from custom CSS via the Customizer. If a site uses both features, the custom CSS from both sources will be loaded. The global styles custom CSS is then loaded after the Customizer custom CSS, so if there are any conflicts between the rules, the global styles take precedence.
Similarly to e.g. [55185], the result is cached in a non-persistent cache, except when `WP_DEBUG` is on to avoid interrupting the theme developer's workflow.
Props glendaviesnz, oandregal, ntsekouras, mamaduka, davidbaumwald, hellofromtonya, flixos90.
Fixes#57536.
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