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d605f96c0f
The npm packages needed a further update for beta 3 in preparation for 6.4. Props @richtabor, @mmaattiiaass, @tellthemachines, @mamaduka, @swissspidy, @scruffian, @andraganescu, @andrewserong, @mujuonly, @get_dave, @ntsekouras, @carlosgprim, @ramonopoly, @jameskoster, @wildworks, @aaronrobertshaw, @czapla, @santosguillamot, @artemiosans, @afercia, @glendaviesnz, @kevin940726, @mikachan, @siobhyb. See #59411. Built from https://develop.svn.wordpress.org/trunk@56808 git-svn-id: http://core.svn.wordpress.org/trunk@56320 1a063a9b-81f0-0310-95a4-ce76da25c4cd
341 lines
13 KiB
PHP
341 lines
13 KiB
PHP
<?php
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/**
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* Server-side rendering of the `core/image` block.
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*
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* @package WordPress
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*/
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/**
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* Renders the `core/image` block on the server,
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* adding a data-id attribute to the element if core/gallery has added on pre-render.
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*
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* @param array $attributes The block attributes.
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* @param string $content The block content.
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* @param WP_Block $block The block object.
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*
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* @return string The block content with the data-id attribute added.
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*/
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function render_block_core_image( $attributes, $content, $block ) {
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$processor = new WP_HTML_Tag_Processor( $content );
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$processor->next_tag( 'img' );
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if ( $processor->get_attribute( 'src' ) === null ) {
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return '';
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}
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if ( isset( $attributes['data-id'] ) ) {
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// Add the data-id="$id" attribute to the img element
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// to provide backwards compatibility for the Gallery Block,
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// which now wraps Image Blocks within innerBlocks.
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// The data-id attribute is added in a core/gallery `render_block_data` hook.
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$processor->set_attribute( 'data-id', $attributes['data-id'] );
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}
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$lightbox_enabled = false;
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$link_destination = isset( $attributes['linkDestination'] ) ? $attributes['linkDestination'] : 'none';
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$lightbox_settings = block_core_image_get_lightbox_settings( $block->parsed_block );
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// If the lightbox is enabled and the image is not linked, flag the lightbox to be rendered.
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if ( isset( $lightbox_settings ) && 'none' === $link_destination ) {
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if ( isset( $lightbox_settings['enabled'] ) && true === $lightbox_settings['enabled'] ) {
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$lightbox_enabled = true;
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}
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}
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// If at least one block in the page has the lightbox, mark the block type as interactive.
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if ( $lightbox_enabled ) {
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$block->block_type->supports['interactivity'] = true;
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}
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// Determine whether the view script should be enqueued or not.
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$view_js_file = 'wp-block-image-view';
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if ( ! wp_script_is( $view_js_file ) ) {
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$script_handles = $block->block_type->view_script_handles;
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// If the script is not needed, and it is still in the `view_script_handles`, remove it.
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if ( ! $lightbox_enabled && in_array( $view_js_file, $script_handles, true ) ) {
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$block->block_type->view_script_handles = array_diff( $script_handles, array( $view_js_file ) );
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}
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// If the script is needed, but it was previously removed, add it again.
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if ( $lightbox_enabled && ! in_array( $view_js_file, $script_handles, true ) ) {
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$block->block_type->view_script_handles = array_merge( $script_handles, array( $view_js_file ) );
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}
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}
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if ( $lightbox_enabled ) {
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// This render needs to happen in a filter with priority 15 to ensure that it
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// runs after the duotone filter and that duotone styles are applied to the image
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// in the lightbox. We also need to ensure that the lightbox works with any plugins
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// that might use filters as well. We can consider removing this in the future if the
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// way the blocks are rendered changes, or if a new kind of filter is introduced.
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add_filter( 'render_block_core/image', 'block_core_image_render_lightbox', 15, 2 );
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}
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return $processor->get_updated_html();
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}
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/**
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* Adds the lightboxEnabled flag to the block data.
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*
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* This is used to determine whether the lightbox should be rendered or not.
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*
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* @param array $block Block data.
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*
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* @return array Filtered block data.
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*/
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function block_core_image_get_lightbox_settings( $block ) {
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// Get the lightbox setting from the block attributes.
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if ( isset( $block['attrs']['lightbox'] ) ) {
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$lightbox_settings = $block['attrs']['lightbox'];
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// If the lightbox setting is not set in the block attributes,
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// check the legacy lightbox settings that are set using the
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// `gutenberg_should_render_lightbox` filter.
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// We can remove this elseif statement when the legacy lightbox settings are removed.
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} elseif ( isset( $block['legacyLightboxSettings'] ) ) {
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$lightbox_settings = $block['legacyLightboxSettings'];
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}
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if ( ! isset( $lightbox_settings ) ) {
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$lightbox_settings = wp_get_global_settings( array( 'lightbox' ), array( 'block_name' => 'core/image' ) );
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// If not present in global settings, check the top-level global settings.
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//
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// NOTE: If no block-level settings are found, the previous call to
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// `wp_get_global_settings` will return the whole `theme.json`
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// structure in which case we can check if the "lightbox" key is present at
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// the top-level of the global settings and use its value.
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if ( isset( $lightbox_settings['lightbox'] ) ) {
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$lightbox_settings = wp_get_global_settings( array( 'lightbox' ) );
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}
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}
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return $lightbox_settings ?? null;
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}
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/**
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* Adds the directives and layout needed for the lightbox behavior.
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*
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* @param string $block_content Rendered block content.
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* @param array $block Block object.
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*
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* @return string Filtered block content.
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*/
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function block_core_image_render_lightbox( $block_content, $block ) {
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$processor = new WP_HTML_Tag_Processor( $block_content );
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$aria_label = __( 'Enlarge image' );
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$processor->next_tag( 'img' );
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$alt_attribute = $processor->get_attribute( 'alt' );
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// An empty alt attribute `alt=""` is valid for decorative images.
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if ( is_string( $alt_attribute ) ) {
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$alt_attribute = trim( $alt_attribute );
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}
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// It only makes sense to append the alt text to the button aria-label when the alt text is non-empty.
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if ( $alt_attribute ) {
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/* translators: %s: Image alt text. */
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$aria_label = sprintf( __( 'Enlarge image: %s' ), $alt_attribute );
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}
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// Currently, we are only enabling the zoom animation.
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$lightbox_animation = 'zoom';
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// Note: We want to store the `src` in the context so we
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// can set it dynamically when the lightbox is opened.
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if ( isset( $block['attrs']['id'] ) ) {
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$img_uploaded_src = wp_get_attachment_url( $block['attrs']['id'] );
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$img_metadata = wp_get_attachment_metadata( $block['attrs']['id'] );
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$img_width = $img_metadata['width'];
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$img_height = $img_metadata['height'];
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} else {
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$img_uploaded_src = $processor->get_attribute( 'src' );
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$img_width = 'none';
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$img_height = 'none';
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}
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if ( isset( $block['attrs']['scale'] ) ) {
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$scale_attr = $block['attrs']['scale'];
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} else {
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$scale_attr = false;
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}
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$w = new WP_HTML_Tag_Processor( $block_content );
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$w->next_tag( 'figure' );
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$w->add_class( 'wp-lightbox-container' );
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$w->set_attribute( 'data-wp-interactive', true );
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$w->set_attribute(
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'data-wp-context',
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sprintf(
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'{ "core":
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{ "image":
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{ "imageLoaded": false,
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"initialized": false,
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"lightboxEnabled": false,
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"hideAnimationEnabled": false,
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"preloadInitialized": false,
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"lightboxAnimation": "%s",
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"imageUploadedSrc": "%s",
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"imageCurrentSrc": "",
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"targetWidth": "%s",
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"targetHeight": "%s",
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"scaleAttr": "%s",
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"dialogLabel": "%s"
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}
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}
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}',
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$lightbox_animation,
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$img_uploaded_src,
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$img_width,
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$img_height,
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$scale_attr,
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__( 'Enlarged image' )
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)
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);
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$w->next_tag( 'img' );
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$w->set_attribute( 'data-wp-init', 'effects.core.image.setCurrentSrc' );
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$w->set_attribute( 'data-wp-on--load', 'actions.core.image.handleLoad' );
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$w->set_attribute( 'data-wp-effect', 'effects.core.image.setButtonStyles' );
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$body_content = $w->get_updated_html();
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// Wrap the image in the body content with a button.
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$img = null;
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preg_match( '/<img[^>]+>/', $body_content, $img );
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$button =
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$img[0]
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. '<button
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type="button"
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aria-haspopup="dialog"
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aria-label="' . esc_attr( $aria_label ) . '"
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data-wp-on--click="actions.core.image.showLightbox"
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data-wp-style--width="context.core.image.imageButtonWidth"
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data-wp-style--height="context.core.image.imageButtonHeight"
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data-wp-style--left="context.core.image.imageButtonLeft"
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data-wp-style--top="context.core.image.imageButtonTop"
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></button>';
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$body_content = preg_replace( '/<img[^>]+>/', $button, $body_content );
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// We need both a responsive image and an enlarged image to animate
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// the zoom seamlessly on slow internet connections; the responsive
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// image is a copy of the one in the body, which animates immediately
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// as the lightbox is opened, while the enlarged one is a full-sized
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// version that will likely still be loading as the animation begins.
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$m = new WP_HTML_Tag_Processor( $block_content );
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$m->next_tag( 'figure' );
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$m->add_class( 'responsive-image' );
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$m->next_tag( 'img' );
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// We want to set the 'src' attribute to an empty string in the responsive image
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// because otherwise, as of this writing, the wp_filter_content_tags() function in
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// WordPress will automatically add a 'srcset' attribute to the image, which will at
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// times cause the incorrectly sized image to be loaded in the lightbox on Firefox.
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// Because of this, we bind the 'src' attribute explicitly the current src to reliably
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// use the exact same image as in the content when the lightbox is first opened while
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// we wait for the larger image to load.
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$m->set_attribute( 'src', '' );
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$m->set_attribute( 'data-wp-bind--src', 'context.core.image.imageCurrentSrc' );
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$m->set_attribute( 'data-wp-style--object-fit', 'selectors.core.image.lightboxObjectFit' );
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$initial_image_content = $m->get_updated_html();
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$q = new WP_HTML_Tag_Processor( $block_content );
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$q->next_tag( 'figure' );
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$q->add_class( 'enlarged-image' );
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$q->next_tag( 'img' );
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// We set the 'src' attribute to an empty string to prevent the browser from loading the image
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// on initial page load, then bind the attribute to a selector that returns the full-sized image src when
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// the lightbox is opened. We could use 'loading=lazy' in combination with the 'hidden' attribute to
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// accomplish the same behavior, but that approach breaks progressive loading of the image in Safari
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// and Chrome (see https://github.com/WordPress/gutenberg/pull/52765#issuecomment-1674008151). Until that
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// is resolved, manually setting the 'src' seems to be the best solution to load the large image on demand.
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$q->set_attribute( 'src', '' );
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$q->set_attribute( 'data-wp-bind--src', 'selectors.core.image.enlargedImgSrc' );
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$q->set_attribute( 'data-wp-style--object-fit', 'selectors.core.image.lightboxObjectFit' );
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$enlarged_image_content = $q->get_updated_html();
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// If the current theme does NOT have a `theme.json`, or the colors are not defined,
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// we need to set the background color & close button color to some default values
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// because we can't get them from the Global Styles.
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$background_color = '#fff';
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$close_button_color = '#000';
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if ( wp_theme_has_theme_json() ) {
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$global_styles_color = wp_get_global_styles( array( 'color' ) );
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if ( ! empty( $global_styles_color['background'] ) ) {
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$background_color = esc_attr( $global_styles_color['background'] );
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}
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if ( ! empty( $global_styles_color['text'] ) ) {
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$close_button_color = esc_attr( $global_styles_color['text'] );
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}
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}
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$close_button_icon = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="15" height="15" aria-hidden="true" focusable="false"><path d="M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z"></path></svg>';
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$close_button_label = esc_attr__( 'Close' );
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$lightbox_html = <<<HTML
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<div data-wp-body="" class="wp-lightbox-overlay $lightbox_animation"
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data-wp-bind--role="selectors.core.image.roleAttribute"
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data-wp-bind--aria-label="selectors.core.image.dialogLabel"
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data-wp-class--initialized="context.core.image.initialized"
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data-wp-class--active="context.core.image.lightboxEnabled"
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data-wp-class--hideAnimationEnabled="context.core.image.hideAnimationEnabled"
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data-wp-bind--aria-modal="selectors.core.image.ariaModal"
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data-wp-effect="effects.core.image.initLightbox"
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data-wp-on--keydown="actions.core.image.handleKeydown"
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data-wp-on--touchstart="actions.core.image.handleTouchStart"
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data-wp-on--touchmove="actions.core.image.handleTouchMove"
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data-wp-on--touchend="actions.core.image.handleTouchEnd"
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data-wp-on--click="actions.core.image.hideLightbox"
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>
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<button type="button" aria-label="$close_button_label" style="fill: $close_button_color" class="close-button" data-wp-on--click="actions.core.image.hideLightbox">
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$close_button_icon
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</button>
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<div class="lightbox-image-container">$initial_image_content</div>
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<div class="lightbox-image-container">$enlarged_image_content</div>
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<div class="scrim" style="background-color: $background_color" aria-hidden="true"></div>
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</div>
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HTML;
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return str_replace( '</figure>', $lightbox_html . '</figure>', $body_content );
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}
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/**
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* Ensures that the view script has the `wp-interactivity` dependency.
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*
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* @since 6.4.0
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*
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* @global WP_Scripts $wp_scripts
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*
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* @return void
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*/
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function block_core_image_ensure_interactivity_dependency() {
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global $wp_scripts;
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if (
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isset( $wp_scripts->registered['wp-block-image-view'] ) &&
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! in_array( 'wp-interactivity', $wp_scripts->registered['wp-block-image-view']->deps, true )
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) {
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$wp_scripts->registered['wp-block-image-view']->deps[] = 'wp-interactivity';
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}
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}
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add_action( 'wp_print_scripts', 'block_core_image_ensure_interactivity_dependency' );
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/**
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* Registers the `core/image` block on server.
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*
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* @return void
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*/
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function register_block_core_image() {
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register_block_type_from_metadata(
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__DIR__ . '/image',
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array(
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'render_callback' => 'render_block_core_image',
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)
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);
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}
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add_action( 'init', 'register_block_core_image' );
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