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<title>[43812] branches/5.0: Styles: Add helper functions for loading block styles.</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/43812">43812</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/43812","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>pento</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2018-10-24 00:35:51 +0000 (Wed, 24 Oct 2018)</dd>
</dl>
<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Styles: Add helper functions for loading block styles.
Blocks are able to register styles that used in the editor and the frontend, or only in the editor. These functions ensure the correct styles are loaded in the correct place.
See <a href="https://core.trac.wordpress.org/ticket/45065">#45065</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches50srcwpincludesdefaultfiltersphp">branches/5.0/src/wp-includes/default-filters.php</a></li>
<li><a href="#branches50srcwpincludesscriptloaderphp">branches/5.0/src/wp-includes/script-loader.php</a></li>
<li><a href="#branches50testsphpunittestsdependenciesstylesphp">branches/5.0/tests/phpunit/tests/dependencies/styles.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branches50srcwpincludesdefaultfiltersphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/src/wp-includes/default-filters.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/src/wp-includes/default-filters.php 2018-10-23 18:55:45 UTC (rev 43811)
+++ branches/5.0/src/wp-includes/default-filters.php 2018-10-24 00:35:51 UTC (rev 43812)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -495,6 +495,10 @@
</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( 'admin_enqueue_scripts', 'wp_localize_jquery_ui_datepicker', 1000 );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+add_action( 'wp_enqueue_scripts', 'wp_common_block_scripts_and_styles' );
+add_action( 'admin_enqueue_scripts', 'wp_common_block_scripts_and_styles' );
+add_action( 'enqueue_block_assets', 'wp_enqueue_registered_block_scripts_and_styles' );
+add_action( 'enqueue_block_editor_assets', 'wp_enqueue_registered_block_scripts_and_styles' );
</ins><span class="cx" style="display: block; padding: 0 10px"> add_action( 'admin_print_scripts-index.php', 'wp_localize_community_events' );
</span><span class="cx" style="display: block; padding: 0 10px"> add_filter( 'wp_print_scripts', 'wp_just_in_time_script_localization' );
</span><span class="cx" style="display: block; padding: 0 10px"> add_filter( 'print_scripts_array', 'wp_prototype_before_jquery' );
</span></span></pre></div>
<a id="branches50srcwpincludesscriptloaderphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/src/wp-includes/script-loader.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/src/wp-includes/script-loader.php 2018-10-23 18:55:45 UTC (rev 43811)
+++ branches/5.0/src/wp-includes/script-loader.php 2018-10-24 00:35:51 UTC (rev 43812)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2178,3 +2178,74 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $compress_css = false;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+/**
+ * Handles the enqueueing of block scripts and styles that are common to both
+ * the editor and the front-end.
+ *
+ * @since 5.0.0
+ *
+ * @global WP_Screen $current_screen
+ */
+function wp_common_block_scripts_and_styles() {
+ global $current_screen;
+
+ if ( is_admin() && ! $current_screen->is_block_editor() ) {
+ return;
+ }
+
+ wp_enqueue_style( 'wp-block-library' );
+
+ if ( current_theme_supports( 'wp-block-styles' ) ) {
+ wp_enqueue_style( 'wp-block-library-theme' );
+ }
+
+ /**
+ * Fires after enqueuing block assets for both editor and front-end.
+ *
+ * Call `add_action` on any hook before 'wp_enqueue_scripts'.
+ *
+ * In the function call you supply, simply use `wp_enqueue_script` and
+ * `wp_enqueue_style` to add your functionality to the Gutenberg editor.
+ *
+ * @since 5.0.0
+ */
+ do_action( 'enqueue_block_assets' );
+}
+
+/**
+ * Enqueues registered block scripts and styles, depending on current rendered
+ * context (only enqueuing editor scripts while in context of the editor).
+ *
+ * @since 5.0.0
+ *
+ * @global WP_Screen $current_screen
+ */
+function wp_enqueue_registered_block_scripts_and_styles() {
+ global $current_screen;
+
+ $is_editor = ( is_admin() && $current_screen->is_block_editor() );
+
+ $block_registry = WP_Block_Type_Registry::get_instance();
+ foreach ( $block_registry->get_all_registered() as $block_name => $block_type ) {
+ // Front-end styles.
+ if ( ! empty( $block_type->style ) ) {
+ wp_enqueue_style( $block_type->style );
+ }
+
+ // Front-end script.
+ if ( ! empty( $block_type->script ) ) {
+ wp_enqueue_script( $block_type->script );
+ }
+
+ // Editor styles.
+ if ( $is_editor && ! empty( $block_type->editor_style ) ) {
+ wp_enqueue_style( $block_type->editor_style );
+ }
+
+ // Editor script.
+ if ( $is_editor && ! empty( $block_type->editor_script ) ) {
+ wp_enqueue_script( $block_type->editor_script );
+ }
+ }
+}
</ins></span></pre></div>
<a id="branches50testsphpunittestsdependenciesstylesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.0/tests/phpunit/tests/dependencies/styles.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/tests/phpunit/tests/dependencies/styles.php 2018-10-23 18:55:45 UTC (rev 43811)
+++ branches/5.0/tests/phpunit/tests/dependencies/styles.php 2018-10-24 00:35:51 UTC (rev 43812)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -4,23 +4,45 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * @group scripts
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><span class="cx" style="display: block; padding: 0 10px"> class Tests_Dependencies_Styles extends WP_UnitTestCase {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- var $old_wp_styles;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ private $old_wp_styles;
+ private $old_wp_scripts;
</ins><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> function setUp() {
</span><span class="cx" style="display: block; padding: 0 10px"> parent::setUp();
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( empty( $GLOBALS['wp_styles'] ) )
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ if ( empty( $GLOBALS['wp_styles'] ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> $GLOBALS['wp_styles'] = null;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> $this->old_wp_styles = $GLOBALS['wp_styles'];
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ if ( empty( $GLOBALS['wp_scripts'] ) ) {
+ $GLOBALS['wp_scripts'] = null;
+ }
+
+ $this->old_wp_styles = $GLOBALS['wp_scripts'];
+
</ins><span class="cx" style="display: block; padding: 0 10px"> remove_action( 'wp_default_styles', 'wp_default_styles' );
</span><span class="cx" style="display: block; padding: 0 10px"> remove_action( 'wp_print_styles', 'print_emoji_styles' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
</ins><span class="cx" style="display: block; padding: 0 10px"> $GLOBALS['wp_styles'] = new WP_Styles();
</span><span class="cx" style="display: block; padding: 0 10px"> $GLOBALS['wp_styles']->default_version = get_bloginfo( 'version' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ $GLOBALS['wp_scripts'] = new WP_Scripts();
+ $GLOBALS['wp_scripts']->default_version = get_bloginfo( 'version' );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> function tearDown() {
</span><span class="cx" style="display: block; padding: 0 10px"> $GLOBALS['wp_styles'] = $this->old_wp_styles;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $GLOBALS['wp_scripts'] = $this->old_wp_scripts;
+
</ins><span class="cx" style="display: block; padding: 0 10px"> add_action( 'wp_default_styles', 'wp_default_styles' );
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'wp_print_styles', 'print_emoji_styles' );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ if ( current_theme_supports( 'wp-block-styles' ) ) {
+ remove_theme_support( 'wp-block-styles' );
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> parent::tearDown();
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -298,4 +320,67 @@
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ /**
+ * Tests that visual block styles are enqueued in the editor even when there is not theme support for 'wp-block-styles'.
+ *
+ * Visual block styles should always be enqueued when editing to avoid the appearance of a broken editor.
+ */
+ function test_block_styles_for_editing_without_theme_support() {
+ // Confirm we are without theme support by default.
+ $this->assertFalse( current_theme_supports( 'wp-block-styles' ) );
+
+ wp_default_styles( $GLOBALS['wp_styles'] );
+
+ $this->assertFalse( wp_style_is( 'wp-block-library-theme' ) );
+ wp_enqueue_style( 'wp-edit-blocks' );
+ $this->assertTrue( wp_style_is( 'wp-block-library-theme' ) );
+ }
+
+ /**
+ * Tests that visual block styles are enqueued when there is theme support for 'wp-block-styles'.
+ *
+ * Visual block styles should always be enqueued when editing to avoid the appearance of a broken editor.
+ */
+ function test_block_styles_for_editing_with_theme_support() {
+ add_theme_support( 'wp-block-styles' );
+
+ wp_default_styles( $GLOBALS['wp_styles'] );
+
+ $this->assertFalse( wp_style_is( 'wp-block-library-theme' ) );
+ wp_common_block_scripts_and_styles();
+ $this->assertTrue( wp_style_is( 'wp-block-library-theme' ) );
+ }
+
+ /**
+ * Tests that visual block styles are not enqueued for viewing when there is no theme support for 'wp-block-styles'.
+ *
+ * Visual block styles should not be enqueued unless a theme opts in.
+ * This way we avoid style conflicts with existing themes.
+ */
+ function test_no_block_styles_for_viewing_without_theme_support() {
+ // Confirm we are without theme support by default.
+ $this->assertFalse( current_theme_supports( 'wp-block-styles' ) );
+
+ wp_default_styles( $GLOBALS['wp_styles'] );
+
+ $this->assertFalse( wp_style_is( 'wp-block-library-theme' ) );
+ wp_enqueue_style( 'wp-block-library' );
+ $this->assertFalse( wp_style_is( 'wp-block-library-theme' ) );
+ }
+
+ /**
+ * Tests that visual block styles are enqueued for viewing when there is theme support for 'wp-block-styles'.
+ *
+ * Visual block styles should be enqueued when a theme opts in.
+ */
+ function test_block_styles_for_viewing_with_theme_support() {
+ add_theme_support( 'wp-block-styles' );
+
+ wp_default_styles( $GLOBALS['wp_styles'] );
+
+ $this->assertFalse( wp_style_is( 'wp-block-library-theme' ) );
+ wp_common_block_scripts_and_styles();
+ $this->assertTrue( wp_style_is( 'wp-block-library-theme' ) );
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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