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104 lines
2.6 KiB
PHP
104 lines
2.6 KiB
PHP
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<?php
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/**
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* Server-side rendering of the `core/categories` block.
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*
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* @package gutenberg
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*/
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/**
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* Renders the `core/categories` block on server.
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*
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* @param array $attributes The block attributes.
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*
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* @return string Returns the categories list/dropdown markup.
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*/
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function render_block_core_categories( $attributes ) {
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static $block_id = 0;
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$block_id++;
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$align = 'center';
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if ( isset( $attributes['align'] ) && in_array( $attributes['align'], array( 'left', 'right', 'full' ), true ) ) {
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$align = $attributes['align'];
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}
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$args = array(
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'echo' => false,
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'hierarchical' => ! empty( $attributes['showHierarchy'] ),
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'orderby' => 'name',
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'show_count' => ! empty( $attributes['showPostCounts'] ),
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'title_li' => '',
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);
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if ( ! empty( $attributes['displayAsDropdown'] ) ) {
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$id = 'wp-block-categories-' . $block_id;
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$args['id'] = $id;
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$args['show_option_none'] = __( 'Select Category', 'gutenberg' );
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$wrapper_markup = '<div class="%1$s">%2$s</div>';
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$items_markup = wp_dropdown_categories( $args );
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$type = 'dropdown';
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if ( ! is_admin() ) {
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$wrapper_markup .= build_dropdown_script_block_core_categories( $id );
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}
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} else {
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$wrapper_markup = '<ul class="%1$s">%2$s</ul>';
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$items_markup = wp_list_categories( $args );
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$type = 'list';
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}
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$class = "wp-block-categories wp-block-categories-{$type} align{$align}";
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if ( isset( $attributes['className'] ) ) {
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$class .= ' ' . $attributes['className'];
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}
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$block_content = sprintf(
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$wrapper_markup,
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esc_attr( $class ),
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$items_markup
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);
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return $block_content;
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}
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/**
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* Generates the inline script for a categories dropdown field.
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*
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* @param string $dropdown_id ID of the dropdown field.
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*
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* @return string Returns the dropdown onChange redirection script.
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*/
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function build_dropdown_script_block_core_categories( $dropdown_id ) {
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ob_start();
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?>
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<script type='text/javascript'>
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/* <![CDATA[ */
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(function() {
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var dropdown = document.getElementById( '<?php echo esc_js( $dropdown_id ); ?>' );
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function onCatChange() {
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if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) {
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location.href = "<?php echo home_url(); ?>/?cat=" + dropdown.options[ dropdown.selectedIndex ].value;
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}
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}
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dropdown.onchange = onCatChange;
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})();
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/* ]]> */
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</script>
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<?php
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return ob_get_clean();
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}
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/**
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* Registers the `core/categories` block on server.
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*/
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function register_block_core_categories() {
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register_block_type(
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'core/categories',
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array(
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'render_callback' => 'render_block_core_categories',
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)
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);
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}
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add_action( 'init', 'register_block_core_categories' );
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