291 lines
10 KiB
PHP
291 lines
10 KiB
PHP
<?php
|
|
/**
|
|
* Server-side rendering of the `core/image` block.
|
|
*
|
|
* @package WordPress
|
|
*/
|
|
|
|
/**
|
|
* Renders the `core/image` block on the server,
|
|
* adding a data-id attribute to the element if core/gallery has added on pre-render.
|
|
*
|
|
* @param array $attributes The block attributes.
|
|
* @param string $content The block content.
|
|
* @param WP_Block $block The block object.
|
|
*
|
|
* @return string The block content with the data-id attribute added.
|
|
*/
|
|
function render_block_core_image( $attributes, $content, $block ) {
|
|
if ( false === stripos( $content, '<img' ) ) {
|
|
return '';
|
|
}
|
|
|
|
$p = new WP_HTML_Tag_Processor( $content );
|
|
|
|
if ( ! $p->next_tag( 'img' ) || null === $p->get_attribute( 'src' ) ) {
|
|
return '';
|
|
}
|
|
|
|
if ( isset( $attributes['data-id'] ) ) {
|
|
// Adds the data-id="$id" attribute to the img element to provide backwards
|
|
// compatibility for the Gallery Block, which now wraps Image Blocks within
|
|
// innerBlocks. The data-id attribute is added in a core/gallery
|
|
// `render_block_data` hook.
|
|
$p->set_attribute( 'data-id', $attributes['data-id'] );
|
|
}
|
|
|
|
$link_destination = isset( $attributes['linkDestination'] ) ? $attributes['linkDestination'] : 'none';
|
|
$lightbox_settings = block_core_image_get_lightbox_settings( $block->parsed_block );
|
|
|
|
/*
|
|
* If the lightbox is enabled and the image is not linked, adds the filter and
|
|
* the JavaScript view file.
|
|
*/
|
|
if (
|
|
isset( $lightbox_settings ) &&
|
|
'none' === $link_destination &&
|
|
isset( $lightbox_settings['enabled'] ) &&
|
|
true === $lightbox_settings['enabled']
|
|
) {
|
|
$suffix = wp_scripts_get_suffix();
|
|
if ( defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN ) {
|
|
$module_url = gutenberg_url( '/build/interactivity/image.min.js' );
|
|
}
|
|
|
|
wp_register_script_module(
|
|
'@wordpress/block-library/image',
|
|
isset( $module_url ) ? $module_url : includes_url( "blocks/image/view{$suffix}.js" ),
|
|
array( '@wordpress/interactivity' ),
|
|
defined( 'GUTENBERG_VERSION' ) ? GUTENBERG_VERSION : get_bloginfo( 'version' )
|
|
);
|
|
|
|
wp_enqueue_script_module( '@wordpress/block-library/image' );
|
|
|
|
/*
|
|
* This render needs to happen in a filter with priority 15 to ensure that
|
|
* it runs after the duotone filter and that duotone styles are applied to
|
|
* the image in the lightbox. Lightbox has to work with any plugins that
|
|
* might use filters as well. Removing this can be considered in the future
|
|
* if the way the blocks are rendered changes, or if a new kind of filter is
|
|
* introduced.
|
|
*/
|
|
add_filter( 'render_block_core/image', 'block_core_image_render_lightbox', 15, 2 );
|
|
} else {
|
|
/*
|
|
* Remove the filter if previously added by other Image blocks.
|
|
*/
|
|
remove_filter( 'render_block_core/image', 'block_core_image_render_lightbox', 15 );
|
|
}
|
|
|
|
return $p->get_updated_html();
|
|
}
|
|
|
|
/**
|
|
* Adds the lightboxEnabled flag to the block data.
|
|
*
|
|
* This is used to determine whether the lightbox should be rendered or not.
|
|
*
|
|
* @param array $block Block data.
|
|
*
|
|
* @return array Filtered block data.
|
|
*/
|
|
function block_core_image_get_lightbox_settings( $block ) {
|
|
// Gets the lightbox setting from the block attributes.
|
|
if ( isset( $block['attrs']['lightbox'] ) ) {
|
|
$lightbox_settings = $block['attrs']['lightbox'];
|
|
}
|
|
|
|
if ( ! isset( $lightbox_settings ) ) {
|
|
$lightbox_settings = wp_get_global_settings( array( 'lightbox' ), array( 'block_name' => 'core/image' ) );
|
|
|
|
// If not present in global settings, check the top-level global settings.
|
|
//
|
|
// NOTE: If no block-level settings are found, the previous call to
|
|
// `wp_get_global_settings` will return the whole `theme.json` structure in
|
|
// which case we can check if the "lightbox" key is present at the top-level
|
|
// of the global settings and use its value.
|
|
if ( isset( $lightbox_settings['lightbox'] ) ) {
|
|
$lightbox_settings = wp_get_global_settings( array( 'lightbox' ) );
|
|
}
|
|
}
|
|
|
|
return $lightbox_settings ?? null;
|
|
}
|
|
|
|
/**
|
|
* Adds the directives and layout needed for the lightbox behavior.
|
|
*
|
|
* @param string $block_content Rendered block content.
|
|
* @param array $block Block object.
|
|
*
|
|
* @return string Filtered block content.
|
|
*/
|
|
function block_core_image_render_lightbox( $block_content, $block ) {
|
|
/*
|
|
* If there's no IMG tag in the block then return the given block content
|
|
* as-is. There's nothing that this code can knowingly modify to add the
|
|
* lightbox behavior.
|
|
*/
|
|
$p = new WP_HTML_Tag_Processor( $block_content );
|
|
if ( $p->next_tag( 'figure' ) ) {
|
|
$p->set_bookmark( 'figure' );
|
|
}
|
|
if ( ! $p->next_tag( 'img' ) ) {
|
|
return $block_content;
|
|
}
|
|
|
|
$alt = $p->get_attribute( 'alt' );
|
|
$img_uploaded_src = $p->get_attribute( 'src' );
|
|
$img_class_names = $p->get_attribute( 'class' );
|
|
$img_styles = $p->get_attribute( 'style' );
|
|
$img_width = 'none';
|
|
$img_height = 'none';
|
|
$aria_label = __( 'Enlarge image' );
|
|
|
|
if ( $alt ) {
|
|
/* translators: %s: Image alt text. */
|
|
$aria_label = sprintf( __( 'Enlarge image: %s' ), $alt );
|
|
}
|
|
|
|
if ( isset( $block['attrs']['id'] ) ) {
|
|
$img_uploaded_src = wp_get_attachment_url( $block['attrs']['id'] );
|
|
$img_metadata = wp_get_attachment_metadata( $block['attrs']['id'] );
|
|
$img_width = $img_metadata['width'] ?? 'none';
|
|
$img_height = $img_metadata['height'] ?? 'none';
|
|
}
|
|
|
|
// Figure.
|
|
$p->seek( 'figure' );
|
|
$figure_class_names = $p->get_attribute( 'class' );
|
|
$figure_styles = $p->get_attribute( 'style' );
|
|
$p->add_class( 'wp-lightbox-container' );
|
|
$p->set_attribute( 'data-wp-interactive', 'core/image' );
|
|
$p->set_attribute(
|
|
'data-wp-context',
|
|
wp_json_encode(
|
|
array(
|
|
'uploadedSrc' => $img_uploaded_src,
|
|
'figureClassNames' => $figure_class_names,
|
|
'figureStyles' => $figure_styles,
|
|
'imgClassNames' => $img_class_names,
|
|
'imgStyles' => $img_styles,
|
|
'targetWidth' => $img_width,
|
|
'targetHeight' => $img_height,
|
|
'scaleAttr' => $block['attrs']['scale'] ?? false,
|
|
'ariaLabel' => $aria_label,
|
|
'alt' => $alt,
|
|
),
|
|
JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP
|
|
)
|
|
);
|
|
|
|
// Image.
|
|
$p->next_tag( 'img' );
|
|
$p->set_attribute( 'data-wp-init', 'callbacks.setButtonStyles' );
|
|
$p->set_attribute( 'data-wp-on--load', 'callbacks.setButtonStyles' );
|
|
$p->set_attribute( 'data-wp-on-window--resize', 'callbacks.setButtonStyles' );
|
|
// Sets an event callback on the `img` because the `figure` element can also
|
|
// contain a caption, and we don't want to trigger the lightbox when the
|
|
// caption is clicked.
|
|
$p->set_attribute( 'data-wp-on--click', 'actions.showLightbox' );
|
|
|
|
$body_content = $p->get_updated_html();
|
|
|
|
// Adds a button alongside image in the body content.
|
|
$img = null;
|
|
preg_match( '/<img[^>]+>/', $body_content, $img );
|
|
|
|
$button =
|
|
$img[0]
|
|
. '<button
|
|
class="lightbox-trigger"
|
|
type="button"
|
|
aria-haspopup="dialog"
|
|
aria-label="' . esc_attr( $aria_label ) . '"
|
|
data-wp-init="callbacks.initTriggerButton"
|
|
data-wp-on--click="actions.showLightbox"
|
|
data-wp-style--right="context.imageButtonRight"
|
|
data-wp-style--top="context.imageButtonTop"
|
|
>
|
|
<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" fill="none" viewBox="0 0 12 12">
|
|
<path fill="#fff" d="M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z" />
|
|
</svg>
|
|
</button>';
|
|
|
|
$body_content = preg_replace( '/<img[^>]+>/', $button, $body_content );
|
|
|
|
add_action( 'wp_footer', 'block_core_image_print_lightbox_overlay' );
|
|
|
|
return $body_content;
|
|
}
|
|
|
|
function block_core_image_print_lightbox_overlay() {
|
|
$close_button_label = esc_attr__( 'Close' );
|
|
|
|
// If the current theme does NOT have a `theme.json`, or the colors are not
|
|
// defined, it needs to set the background color & close button color to some
|
|
// default values because it can't get them from the Global Styles.
|
|
$background_color = '#fff';
|
|
$close_button_color = '#000';
|
|
if ( wp_theme_has_theme_json() ) {
|
|
$global_styles_color = wp_get_global_styles( array( 'color' ) );
|
|
if ( ! empty( $global_styles_color['background'] ) ) {
|
|
$background_color = esc_attr( $global_styles_color['background'] );
|
|
}
|
|
if ( ! empty( $global_styles_color['text'] ) ) {
|
|
$close_button_color = esc_attr( $global_styles_color['text'] );
|
|
}
|
|
}
|
|
|
|
echo <<<HTML
|
|
<div
|
|
class="wp-lightbox-overlay zoom"
|
|
data-wp-interactive="core/image"
|
|
data-wp-context='{}'
|
|
data-wp-bind--role="state.roleAttribute"
|
|
data-wp-bind--aria-label="state.currentImage.ariaLabel"
|
|
data-wp-bind--aria-modal="state.ariaModal"
|
|
data-wp-class--active="state.overlayEnabled"
|
|
data-wp-class--show-closing-animation="state.showClosingAnimation"
|
|
data-wp-watch="callbacks.setOverlayFocus"
|
|
data-wp-on--keydown="actions.handleKeydown"
|
|
data-wp-on--touchstart="actions.handleTouchStart"
|
|
data-wp-on--touchmove="actions.handleTouchMove"
|
|
data-wp-on--touchend="actions.handleTouchEnd"
|
|
data-wp-on--click="actions.hideLightbox"
|
|
data-wp-on-window--resize="callbacks.setOverlayStyles"
|
|
data-wp-on-window--scroll="actions.handleScroll"
|
|
tabindex="-1"
|
|
>
|
|
<button type="button" aria-label="$close_button_label" style="fill: $close_button_color" class="close-button">
|
|
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="20" height="20" 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>
|
|
</button>
|
|
<div class="lightbox-image-container">
|
|
<figure data-wp-bind--class="state.currentImage.figureClassNames" data-wp-bind--style="state.currentImage.figureStyles">
|
|
<img data-wp-bind--alt="state.currentImage.alt" data-wp-bind--class="state.currentImage.imgClassNames" data-wp-bind--style="state.imgStyles" data-wp-bind--src="state.currentImage.currentSrc">
|
|
</figure>
|
|
</div>
|
|
<div class="lightbox-image-container">
|
|
<figure data-wp-bind--class="state.currentImage.figureClassNames" data-wp-bind--style="state.currentImage.figureStyles">
|
|
<img data-wp-bind--alt="state.currentImage.alt" data-wp-bind--class="state.currentImage.imgClassNames" data-wp-bind--style="state.imgStyles" data-wp-bind--src="state.enlargedSrc">
|
|
</figure>
|
|
</div>
|
|
<div class="scrim" style="background-color: $background_color" aria-hidden="true"></div>
|
|
<style data-wp-text="state.overlayStyles"></style>
|
|
</div>
|
|
HTML;
|
|
}
|
|
|
|
/**
|
|
* Registers the `core/image` block on server.
|
|
*/
|
|
function register_block_core_image() {
|
|
register_block_type_from_metadata(
|
|
__DIR__ . '/image',
|
|
array(
|
|
'render_callback' => 'render_block_core_image',
|
|
)
|
|
);
|
|
}
|
|
add_action( 'init', 'register_block_core_image' );
|