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112 lines
2.7 KiB
PHP
112 lines
2.7 KiB
PHP
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<?php
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/**
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* Server-side rendering of the `core/legacy-widget` 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/legacy-widget' block.
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*
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* @param array $attributes The block attributes.
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*
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* @return string Rendered block.
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*/
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function render_block_core_legacy_widget( $attributes ) {
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if ( isset( $attributes['id'] ) ) {
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$sidebar_id = gutenberg_find_widgets_sidebar( $attributes['id'] );
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return gutenberg_render_widget( $attributes['id'], $sidebar_id );
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}
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if ( ! isset( $attributes['idBase'] ) ) {
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return '';
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}
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$widget_object = gutenberg_get_widget_object( $attributes['idBase'] );
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if ( ! $widget_object ) {
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return '';
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}
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if ( isset( $attributes['instance']['encoded'], $attributes['instance']['hash'] ) ) {
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$serialized_instance = base64_decode( $attributes['instance']['encoded'] );
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if ( wp_hash( $serialized_instance ) !== $attributes['instance']['hash'] ) {
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return '';
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}
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$instance = unserialize( $serialized_instance );
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} else {
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$instance = array();
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}
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ob_start();
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the_widget( get_class( $widget_object ), $instance );
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return ob_get_clean();
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}
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/**
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* Registers the 'core/legacy-widget' block.
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*/
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function register_block_core_legacy_widget() {
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register_block_type_from_metadata(
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__DIR__ . '/legacy-widget',
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array(
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'render_callback' => 'render_block_core_legacy_widget',
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)
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);
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}
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add_action( 'init', 'register_block_core_legacy_widget', 20 );
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/**
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* Intercepts any request with legacy-widget-preview in the query param and, if
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* set, renders a page containing a preview of the requested Legacy Widget
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* block.
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*/
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function handle_legacy_widget_preview_iframe() {
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if ( empty( $_GET['legacy-widget-preview'] ) ) {
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return;
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}
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if ( ! current_user_can( 'edit_theme_options' ) ) {
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return;
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}
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define( 'IFRAME_REQUEST', true );
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?>
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<!doctype html>
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<html <?php language_attributes(); ?>>
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<head>
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<meta charset="<?php bloginfo( 'charset' ); ?>" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<link rel="profile" href="https://gmpg.org/xfn/11" />
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<?php wp_head(); ?>
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<style>
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/* Reset theme styles */
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html, body, #page, #content {
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background: #FFF !important;
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padding: 0 !important;
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margin: 0 !important;
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}
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</style>
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</head>
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<body <?php body_class(); ?>>
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<div id="page" class="site">
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<div id="content" class="site-content">
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<?php
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$registry = WP_Block_Type_Registry::get_instance();
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$block = $registry->get_registered( 'core/legacy-widget' );
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echo $block->render( $_GET['legacy-widget-preview'] );
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?>
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</div><!-- #content -->
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</div><!-- #page -->
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<?php wp_footer(); ?>
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</body>
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</html>
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<?php
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exit;
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}
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add_action( 'init', 'handle_legacy_widget_preview_iframe', 21 );
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