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<?php |
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/** |
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* Anchor block support flag. |
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* |
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* @package gutenberg |
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*/ |
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|
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/** |
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* Registers the anchor block attribute for block types that support it. |
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* |
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* @param WP_Block_Type $block_type Block Type. |
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*/ |
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function gutenberg_register_anchor_support( $block_type ) { |
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if ( ! block_has_support( $block_type, array( 'anchor' ) ) ) { |
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return; |
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} |
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|
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if ( ! isset( $block_type->attributes ) ) { |
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$block_type->attributes = array(); |
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} |
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|
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if ( ! array_key_exists( 'anchor', $block_type->attributes ) ) { |
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$block_type->attributes['anchor'] = array( |
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'type' => 'string', |
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); |
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} |
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} |
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|
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/** |
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* Add the anchor id to the output. |
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* |
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* @param WP_Block_Type $block_type Block Type. |
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* @param array<string, mixed> $block_attributes Block attributes. |
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* @return array<string, string> Attributes with block anchor id. |
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*/ |
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function gutenberg_apply_anchor_support( $block_type, $block_attributes ) { |
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if ( empty( $block_attributes ) ) { |
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return array(); |
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} |
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|
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if ( ! block_has_support( $block_type, array( 'anchor' ) ) ) { |
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return array(); |
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} |
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|
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if ( ! isset( $block_attributes['anchor'] ) || ! is_string( $block_attributes['anchor'] ) || '' === $block_attributes['anchor'] ) { |
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return array(); |
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} |
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|
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return array( 'id' => $block_attributes['anchor'] ); |
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} |
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|
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// Register the block support. |
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WP_Block_Supports::get_instance()->register( |
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'anchor', |
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array( |
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'register_attribute' => 'gutenberg_register_anchor_support', |
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'apply' => 'gutenberg_apply_anchor_support', |
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) |
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); |
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|
