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<title>[43743] branches/5.0: Blocks: Introduce `register_block_type()`, `unregister_block_type()`, and `get_dynamic_blocks()` functions.</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/43743">43743</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/43743","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>2018-10-18 01:52:58 +0000 (Thu, 18 Oct 2018)</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'>Blocks: Introduce `register_block_type()`, `unregister_block_type()`, and `get_dynamic_blocks()` functions.

These helper functions allow easy access to the global block registry.

See <a href="https://core.trac.wordpress.org/ticket/45109">#45109</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches50srcwpincludesblocksphp">branches/5.0/src/wp-includes/blocks.php</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li>branches/5.0/tests/phpunit/data/blocks/</li>
<li><a href="#branches50testsphpunitdatablocksdoblocksexpectedhtml">branches/5.0/tests/phpunit/data/blocks/do-blocks-expected.html</a></li>
<li><a href="#branches50testsphpunitdatablocksdoblocksoriginalhtml">branches/5.0/tests/phpunit/data/blocks/do-blocks-original.html</a></li>
<li><a href="#branches50testsphpunittestsblocksregisterphp">branches/5.0/tests/phpunit/tests/blocks/register.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branches50srcwpincludesblocksphp"></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/blocks.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/src/wp-includes/blocks.php   2018-10-18 01:30:49 UTC (rev 43742)
+++ branches/5.0/src/wp-includes/blocks.php     2018-10-18 01:52:58 UTC (rev 43743)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -8,6 +8,39 @@
</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">+ * Registers a block type.
+ *
+ * @since 5.0.0
+ *
+ * @param string|WP_Block_Type $name Block type name including namespace, or alternatively a
+ *                                   complete WP_Block_Type instance. In case a WP_Block_Type
+ *                                   is provided, the $args parameter will be ignored.
+ * @param array                $args {
+ *     Optional. Array of block type arguments. Any arguments may be defined, however the
+ *     ones described below are supported by default. Default empty array.
+ *
+ *     @type callable $render_callback Callback used to render blocks of this block type.
+ * }
+ * @return WP_Block_Type|false The registered block type on success, or false on failure.
+ */
+function register_block_type( $name, $args = array() ) {
+       return WP_Block_Type_Registry::get_instance()->register( $name, $args );
+}
+
+/**
+ * Unregisters a block type.
+ *
+ * @since 5.0.0
+ *
+ * @param string|WP_Block_Type $name Block type name including namespace, or alternatively a
+ *                                   complete WP_Block_Type instance.
+ * @return WP_Block_Type|false The unregistered block type on success, or false on failure.
+ */
+function unregister_block_type( $name ) {
+       return WP_Block_Type_Registry::get_instance()->unregister( $name );
+}
+
+/**
</ins><span class="cx" style="display: block; padding: 0 10px">  * Determine whether a post or content string has blocks.
</span><span class="cx" style="display: block; padding: 0 10px">  *
</span><span class="cx" style="display: block; padding: 0 10px">  * This test optimizes for performance rather than strict accuracy, detecting
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -59,3 +92,23 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        return false !== strpos( $post, '<!-- wp:' . $block_type . ' ' );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+/**
+ * Returns an array of the names of all registered dynamic block types.
+ *
+ * @since 5.0.0
+ *
+ * @return array Array of dynamic block names.
+ */
+function get_dynamic_block_names() {
+       $dynamic_block_names = array();
+
+       $block_types = WP_Block_Type_Registry::get_instance()->get_all_registered();
+       foreach ( $block_types as $block_type ) {
+               if ( $block_type->is_dynamic() ) {
+                       $dynamic_block_names[] = $block_type->name;
+               }
+       }
+
+       return $dynamic_block_names;
+}
</ins></span></pre></div>
<a id="branches50testsphpunitdatablocksdoblocksexpectedhtml"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: branches/5.0/tests/phpunit/data/blocks/do-blocks-expected.html</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/tests/phpunit/data/blocks/do-blocks-expected.html                            (rev 0)
+++ branches/5.0/tests/phpunit/data/blocks/do-blocks-expected.html      2018-10-18 01:52:58 UTC (rev 43743)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,17 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<p>First Auto Paragraph</p>
+
+<!--more-->
+
+<p>First Gutenberg Paragraph</p>
+
+<p>Second Auto Paragraph</p>
+
+
+<p>Third Gutenberg Paragraph</p>
+
+<p>Third Auto Paragraph</p>
+
+<p>[someshortcode]</p>
+<p>And some content?!</p>
+<p>[/someshortcode]</p>
+
</ins></span></pre></div>
<a id="branches50testsphpunitdatablocksdoblocksoriginalhtml"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: branches/5.0/tests/phpunit/data/blocks/do-blocks-original.html</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/tests/phpunit/data/blocks/do-blocks-original.html                            (rev 0)
+++ branches/5.0/tests/phpunit/data/blocks/do-blocks-original.html      2018-10-18 01:52:58 UTC (rev 43743)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,25 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<p>First Auto Paragraph</p>
+
+<!--more-->
+
+<!-- wp:core/paragraph -->
+<p>First Gutenberg Paragraph</p>
+<!-- /wp:core/paragraph -->
+
+<p>Second Auto Paragraph</p>
+
+<!-- wp:core/test-self-closing /-->
+
+<!-- wp:core/paragraph -->
+<p>Third Gutenberg Paragraph</p>
+<!-- /wp:core/paragraph -->
+
+<p>Third Auto Paragraph</p>
+
+<!-- wp:core/shortcode -->
+[someshortcode]
+
+And some content?!
+
+[/someshortcode]
+<!-- /wp:core/shortcode -->
</ins></span></pre></div>
<a id="branches50testsphpunittestsblocksregisterphp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: branches/5.0/tests/phpunit/tests/blocks/register.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.0/tests/phpunit/tests/blocks/register.php                              (rev 0)
+++ branches/5.0/tests/phpunit/tests/blocks/register.php        2018-10-18 01:52:58 UTC (rev 43743)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,141 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+/**
+ * Block registry tests.
+ *
+ * @package WordPress
+ * @subpackage Blocks
+ * @since 5.0.0
+ */
+
+/**
+ * Tests for register_block_type(), unregister_block_type(), get_dynamic_block_names()
+ *
+ * @since 5.0.0
+ *
+ * @group blocks
+ */
+class WP_Test_Block_Register extends WP_UnitTestCase {
+
+       /**
+        * ID for a test post.
+        *
+        * @since 5.0.0
+        * @var int
+        */
+       protected static $post_id;
+
+       /**
+        * Set up before class.
+        *
+        * @since 5.0.0
+        */
+       public static function wpSetUpBeforeClass( $factory ) {
+               self::$post_id = $factory->post->create(
+                       array(
+                               'post_content' => file_get_contents( DIR_TESTDATA . '/blocks/do-blocks-original.html' ),
+                       )
+               );
+       }
+
+       /**
+        * Tear down after class.
+        *
+        * @since 5.0.0
+        */
+       public static function wpTearDownAfterClass() {
+               // Also deletes revisions.
+               wp_delete_post( self::$post_id, true );
+       }
+
+       /**
+        * Empty render function for tests to use.
+        */
+       function render_stub() {}
+
+       /**
+        * Tear down after each test.
+        *
+        * @since 5.0.0
+        */
+       function tearDown() {
+               parent::tearDown();
+
+               $registry = WP_Block_Type_Registry::get_instance();
+
+               foreach ( array( 'test-static', 'test-dynamic' ) as $block_name ) {
+                       $block_name = 'core/' . $block_name;
+
+                       if ( $registry->is_registered( $block_name ) ) {
+                               $registry->unregister( $block_name );
+                       }
+               }
+       }
+
+       /**
+        * @ticket 45109
+        */
+       function test_register_affects_main_registry() {
+               $name     = 'core/test-static';
+               $settings = array(
+                       'icon' => 'text',
+               );
+
+               register_block_type( $name, $settings );
+
+               $registry = WP_Block_Type_Registry::get_instance();
+               $this->assertTrue( $registry->is_registered( $name ) );
+       }
+
+       /**
+        * @ticket 45109
+        */
+       function test_unregister_affects_main_registry() {
+               $name     = 'core/test-static';
+               $settings = array(
+                       'icon' => 'text',
+               );
+
+               register_block_type( $name, $settings );
+               unregister_block_type( $name );
+
+               $registry = WP_Block_Type_Registry::get_instance();
+               $this->assertFalse( $registry->is_registered( $name ) );
+       }
+
+       /**
+        * @ticket 45109
+        */
+       function test_get_dynamic_block_names() {
+               register_block_type( 'core/test-static', array() );
+               register_block_type( 'core/test-dynamic', array( 'render_callback' => array( $this, 'render_stub' ) ) );
+
+               $dynamic_block_names = get_dynamic_block_names();
+
+               $this->assertContains( 'core/test-dynamic', $dynamic_block_names );
+               $this->assertNotContains( 'core/test-static', $dynamic_block_names );
+       }
+
+       /**
+        * @ticket 45109
+        */
+       function test_has_blocks() {
+               // Test with passing post ID.
+               $this->assertTrue( has_blocks( self::$post_id ) );
+
+               // Test with passing WP_Post object.
+               $this->assertTrue( has_blocks( get_post( self::$post_id ) ) );
+
+               // Test with passing content string.
+               $this->assertTrue( has_blocks( get_post( self::$post_id ) ) );
+
+               // Test default.
+               $this->assertFalse( has_blocks() );
+               $query = new WP_Query( array( 'post__in' => array( self::$post_id ) ) );
+               $query->the_post();
+               $this->assertTrue( has_blocks() );
+
+               // Test string (without blocks).
+               $content = file_get_contents( DIR_TESTDATA . '/blocks/do-blocks-expected.html' );
+               $this->assertFalse( has_blocks( $content ) );
+       }
+}
</ins></span></pre>
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