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<title>[54358] trunk/src/wp-includes: Editor: Reintroduce styles that were removed for classic themes.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/54358">54358</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/54358","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>davidbaumwald</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-09-29 18:53:57 +0000 (Thu, 29 Sep 2022)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Editor: Reintroduce styles that were removed for classic themes.
After block CSS was merged with `theme.json` styles in [https://github.com/WordPress/gutenberg/pull/34180 Gutenberg PR <a href="https://core.trac.wordpress.org/ticket/34180">#34180</a>], this removed some existing, default styling for some elements, including buttons. This change re-adds the removed styles by enqueueing `classic.css` for classic themes.
Merges [https://github.com/WordPress/gutenberg/pull/44334 Gutenberg PR <a href="https://core.trac.wordpress.org/ticket/44334">#44334</a>] into trunk.
Follow-up to <a href="https://core.trac.wordpress.org/changeset/54257">[54257]</a>.
Props scruffian, oandregal, ramonopoly, aristath, andrewserong, get_dave, bernhard-reiter.
See <a href="https://core.trac.wordpress.org/ticket/56467">#56467</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesdefaultfiltersphp">trunk/src/wp-includes/default-filters.php</a></li>
<li><a href="#trunksrcwpincludesscriptloaderphp">trunk/src/wp-includes/script-loader.php</a></li>
</ul>
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<h3>Diff</h3>
<a id="trunksrcwpincludesdefaultfiltersphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/default-filters.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/default-filters.php 2022-09-29 18:03:42 UTC (rev 54357)
+++ trunk/src/wp-includes/default-filters.php 2022-09-29 18:53:57 UTC (rev 54358)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -557,8 +557,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'wp_enqueue_scripts', 'wp_localize_jquery_ui_datepicker', 1000 );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'wp_enqueue_scripts', 'wp_common_block_scripts_and_styles' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+add_action( 'wp_enqueue_scripts', 'wp_enqueue_classic_theme_styles' );
</ins><span class="cx" style="display: block; padding: 0 10px"> add_action( 'admin_enqueue_scripts', 'wp_localize_jquery_ui_datepicker', 1000 );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'admin_enqueue_scripts', 'wp_common_block_scripts_and_styles' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+add_action( 'admin_enqueue_scripts', 'wp_enqueue_classic_theme_styles' );
</ins><span class="cx" style="display: block; padding: 0 10px"> add_action( 'enqueue_block_assets', 'wp_enqueue_registered_block_scripts_and_styles' );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'enqueue_block_assets', 'enqueue_block_styles_assets', 30 );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'enqueue_block_editor_assets', 'wp_enqueue_registered_block_scripts_and_styles' );
</span></span></pre></div>
<a id="trunksrcwpincludesscriptloaderphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/script-loader.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/script-loader.php 2022-09-29 18:03:42 UTC (rev 54357)
+++ trunk/src/wp-includes/script-loader.php 2022-09-29 18:53:57 UTC (rev 54358)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3640,3 +3640,16 @@
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'wp_enqueue_scripts', $fn_generate_and_enqueue_styles );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'admin_init', $fn_generate_and_enqueue_editor_styles );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+/**
+ * Loads classic theme styles on classic themes.
+ *
+ * This is needed for backwards compatibility for button blocks specifically.
+ */
+function wp_enqueue_classic_theme_styles() {
+ if ( ! wp_is_block_theme() ) {
+ $suffix = wp_scripts_get_suffix();
+ wp_register_style( 'classic-theme-styles', "/wp-includes/css/dist/block-library/classic$suffix.css", array(), true );
+ wp_enqueue_style( 'classic-theme-styles' );
+ }
+}
</ins></span></pre>
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