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35 results

edit-form-blocks.php

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  • edit-form-blocks.php 13.73 KiB
    <?php
    /**
     * The block editor page.
     *
     * @since 5.0.0
     *
     * @package WordPress
     * @subpackage Administration
     */
    
    // Don't load directly.
    if ( ! defined( 'ABSPATH' ) ) {
    	die( '-1' );
    }
    
    /**
     * @global string       $post_type
     * @global WP_Post_Type $post_type_object
     * @global WP_Post      $post             Global post object.
     * @global string       $title
     * @global array        $editor_styles
     * @global array        $wp_meta_boxes
     */
    global $post_type, $post_type_object, $post, $title, $editor_styles, $wp_meta_boxes;
    
    // Flag that we're loading the block editor.
    $current_screen = get_current_screen();
    $current_screen->is_block_editor( true );
    
    /*
     * Emoji replacement is disabled for now, until it plays nicely with React.
     */
    remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
    
    wp_enqueue_script( 'heartbeat' );
    wp_enqueue_script( 'wp-edit-post' );
    wp_enqueue_script( 'wp-format-library' );
    
    $rest_base = ! empty( $post_type_object->rest_base ) ? $post_type_object->rest_base : $post_type_object->name;
    
    // Preload common data.
    $preload_paths = array(
    	'/',
    	'/wp/v2/types?context=edit',
    	'/wp/v2/taxonomies?per_page=-1&context=edit',
    	'/wp/v2/themes?status=active',
    	sprintf( '/wp/v2/%s/%s?context=edit', $rest_base, $post->ID ),
    	sprintf( '/wp/v2/types/%s?context=edit', $post_type ),
    	sprintf( '/wp/v2/users/me?post_type=%s&context=edit', $post_type ),
    	array( '/wp/v2/media', 'OPTIONS' ),
    	array( '/wp/v2/blocks', 'OPTIONS' ),
    	sprintf( '/wp/v2/%s/%d/autosaves?context=edit', $rest_base, $post->ID ),
    );
    
    /**
     * Preload common data by specifying an array of REST API paths that will be preloaded.
     *
     * Filters the array of paths that will be preloaded.
     *
     * @since 5.0.0
     *
     * @param string[] $preload_paths Array of paths to preload.
     * @param WP_Post  $post          Post being edited.
     */
    $preload_paths = apply_filters( 'block_editor_preload_paths', $preload_paths, $post );
    
    /*
     * Ensure the global $post remains the same after API data is preloaded.
     * Because API preloading can call the_content and other filters, plugins
     * can unexpectedly modify $post.
     */
    $backup_global_post = $post;
    
    $preload_data = array_reduce(
    	$preload_paths,
    	'rest_preload_api_request',
    	array()
    );
    
    // Restore the global $post as it was before API preloading.
    $post = $backup_global_post;
    
    wp_add_inline_script(
    	'wp-api-fetch',
    	sprintf( 'wp.apiFetch.use( wp.apiFetch.createPreloadingMiddleware( %s ) );', wp_json_encode( $preload_data ) ),
    	'after'
    );
    
    wp_add_inline_script(
    	'wp-blocks',
    	sprintf( 'wp.blocks.setCategories( %s );', wp_json_encode( get_block_categories( $post ) ) ),
    	'after'
    );
    
    /*
     * Assign initial edits, if applicable. These are not initially assigned to the persisted post,
     * but should be included in its save payload.
     */
    $initial_edits = null;
    $is_new_post   = false;
    if ( 'auto-draft' === $post->post_status ) {
    	$is_new_post = true;
    	// Override "(Auto Draft)" new post default title with empty string, or filtered value.
    	$initial_edits = array(
    		'title'   => $post->post_title,
    		'content' => $post->post_content,
    		'excerpt' => $post->post_excerpt,
    	);
    }
    
    // Preload server-registered block schemas.
    wp_add_inline_script(
    	'wp-blocks',
    	'wp.blocks.unstable__bootstrapServerSideBlockDefinitions(' . wp_json_encode( get_block_editor_server_block_settings() ) . ');'
    );
    
    // Get admin url for handling meta boxes.
    $meta_box_url = admin_url( 'post.php' );
    $meta_box_url = add_query_arg(
    	array(
    		'post'                  => $post->ID,
    		'action'                => 'edit',
    		'meta-box-loader'       => true,
    		'meta-box-loader-nonce' => wp_create_nonce( 'meta-box-loader' ),
    	),
    	$meta_box_url
    );
    wp_localize_script( 'wp-editor', '_wpMetaBoxUrl', $meta_box_url );
    
    
    /*
     * Initialize the editor.
     */
    
    $align_wide       = get_theme_support( 'align-wide' );
    $color_palette    = current( (array) get_theme_support( 'editor-color-palette' ) );
    $font_sizes       = current( (array) get_theme_support( 'editor-font-sizes' ) );
    $gradient_presets = current( (array) get_theme_support( 'editor-gradient-presets' ) );
    
    /**
     * Filters the allowed block types for the editor, defaulting to true (all
     * block types supported).
     *
     * @since 5.0.0
     *
     * @param bool|array $allowed_block_types Array of block type slugs, or
     *                                        boolean to enable/disable all.
     * @param WP_Post    $post                The post resource data.
     */
    $allowed_block_types = apply_filters( 'allowed_block_types', true, $post );
    
    /*
     * Get all available templates for the post/page attributes meta-box.
     * The "Default template" array element should only be added if the array is
     * not empty so we do not trigger the template select element without any options
     * besides the default value.
     */
    $available_templates = wp_get_theme()->get_page_templates( get_post( $post->ID ) );
    $available_templates = ! empty( $available_templates ) ? array_merge(
    	array(
    		/** This filter is documented in wp-admin/includes/meta-boxes.php */
    		'' => apply_filters( 'default_page_template_title', __( 'Default template' ), 'rest-api' ),
    	),
    	$available_templates
    ) : $available_templates;
    
    // Media settings.
    $max_upload_size = wp_max_upload_size();
    if ( ! $max_upload_size ) {
    	$max_upload_size = 0;
    }
    
    // Editor Styles.
    $styles = array(
    	array(
    		'css' => file_get_contents(
    			ABSPATH . WPINC . '/css/dist/editor/editor-styles.css'
    		),
    	),
    );
    
    /* translators: Use this to specify the CSS font family for the default font. */
    $locale_font_family = esc_html_x( 'Noto Serif', 'CSS Font Family for Editor Font' );
    $styles[]           = array(
    	'css' => "body { font-family: '$locale_font_family' }",
    );
    
    if ( $editor_styles && current_theme_supports( 'editor-styles' ) ) {
    	foreach ( $editor_styles as $style ) {
    		if ( preg_match( '~^(https?:)?//~', $style ) ) {
    			$response = wp_remote_get( $style );
    			if ( ! is_wp_error( $response ) ) {
    				$styles[] = array(
    					'css' => wp_remote_retrieve_body( $response ),
    				);
    			}
    		} else {
    			$file = get_theme_file_path( $style );
    			if ( is_file( $file ) ) {
    				$styles[] = array(
    					'css'     => file_get_contents( $file ),
    					'baseURL' => get_theme_file_uri( $style ),
    				);
    			}
    		}
    	}
    }
    
    // Image sizes.
    
    /** This filter is documented in wp-admin/includes/media.php */
    $image_size_names = apply_filters(
    	'image_size_names_choose',
    	array(
    		'thumbnail' => __( 'Thumbnail' ),
    		'medium'    => __( 'Medium' ),
    		'large'     => __( 'Large' ),
    		'full'      => __( 'Full Size' ),
    	)
    );
    
    $available_image_sizes = array();
    foreach ( $image_size_names as $image_size_slug => $image_size_name ) {
    	$available_image_sizes[] = array(
    		'slug' => $image_size_slug,
    		'name' => $image_size_name,
    	);
    }
    
    $image_dimensions = array();
    $all_sizes        = wp_get_registered_image_subsizes();
    foreach ( $available_image_sizes as $size ) {
    	$key = $size['slug'];
    	if ( isset( $all_sizes[ $key ] ) ) {
    		$image_dimensions[ $key ] = $all_sizes[ $key ];
    	}
    }
    
    // Lock settings.
    $user_id = wp_check_post_lock( $post->ID );
    if ( $user_id ) {
    	$locked = false;
    
    	/** This filter is documented in wp-admin/includes/post.php */
    	if ( apply_filters( 'show_post_locked_dialog', true, $post, $user_id ) ) {
    		$locked = true;
    	}
    
    	$user_details = null;
    	if ( $locked ) {
    		$user         = get_userdata( $user_id );
    		$user_details = array(
    			'name' => $user->display_name,
    		);
    		$avatar       = get_avatar_url( $user_id, array( 'size' => 64 ) );
    	}
    
    	$lock_details = array(
    		'isLocked' => $locked,
    		'user'     => $user_details,
    	);
    } else {
    	// Lock the post.
    	$active_post_lock = wp_set_post_lock( $post->ID );
    	if ( $active_post_lock ) {
    		$active_post_lock = esc_attr( implode( ':', $active_post_lock ) );
    	}
    
    	$lock_details = array(
    		'isLocked'       => false,
    		'activePostLock' => $active_post_lock,
    	);
    }
    
    /**
     * Filters the body placeholder text.
     *
     * @since 5.0.0
     *
     * @param string  $text Placeholder text. Default 'Start writing or type / to choose a block'.
     * @param WP_Post $post Post object.
     */
    $body_placeholder = apply_filters( 'write_your_story', __( 'Start writing or type / to choose a block' ), $post );
    
    $editor_settings = array(
    	'alignWide'              => $align_wide,
    	'availableTemplates'     => $available_templates,
    	'allowedBlockTypes'      => $allowed_block_types,
    	'disableCustomColors'    => get_theme_support( 'disable-custom-colors' ),
    	'disableCustomFontSizes' => get_theme_support( 'disable-custom-font-sizes' ),
    	'disableCustomGradients' => get_theme_support( 'disable-custom-gradients' ),
    	'disablePostFormats'     => ! current_theme_supports( 'post-formats' ),
    	/** This filter is documented in wp-admin/edit-form-advanced.php */
    	'titlePlaceholder'       => apply_filters( 'enter_title_here', __( 'Add title' ), $post ),
    	'bodyPlaceholder'        => $body_placeholder,
    	'isRTL'                  => is_rtl(),
    	'autosaveInterval'       => AUTOSAVE_INTERVAL,
    	'maxUploadFileSize'      => $max_upload_size,
    	'allowedMimeTypes'       => get_allowed_mime_types(),
    	'styles'                 => $styles,
    	'imageSizes'             => $available_image_sizes,
    	'imageDimensions'        => $image_dimensions,
    	'richEditingEnabled'     => user_can_richedit(),
    	'postLock'               => $lock_details,
    	'postLockUtils'          => array(
    		'nonce'       => wp_create_nonce( 'lock-post_' . $post->ID ),
    		'unlockNonce' => wp_create_nonce( 'update-post_' . $post->ID ),
    		'ajaxUrl'     => admin_url( 'admin-ajax.php' ),
    	),
    
    	// Whether or not to load the 'postcustom' meta box is stored as a user meta
    	// field so that we're not always loading its assets.
    	'enableCustomFields'     => (bool) get_user_meta( get_current_user_id(), 'enable_custom_fields', true ),
    );
    
    $autosave = wp_get_post_autosave( $post_ID );
    if ( $autosave ) {
    	if ( mysql2date( 'U', $autosave->post_modified_gmt, false ) > mysql2date( 'U', $post->post_modified_gmt, false ) ) {
    		$editor_settings['autosave'] = array(
    			'editLink' => get_edit_post_link( $autosave->ID ),
    		);
    	} else {
    		wp_delete_post_revision( $autosave->ID );
    	}
    }
    
    if ( false !== $color_palette ) {
    	$editor_settings['colors'] = $color_palette;
    }
    
    if ( false !== $font_sizes ) {
    	$editor_settings['fontSizes'] = $font_sizes;
    }
    
    if ( false !== $gradient_presets ) {
    	$editor_settings['gradients'] = $gradient_presets;
    }
    
    if ( ! empty( $post_type_object->template ) ) {
    	$editor_settings['template']     = $post_type_object->template;
    	$editor_settings['templateLock'] = ! empty( $post_type_object->template_lock ) ? $post_type_object->template_lock : false;
    }
    
    // If there's no template set on a new post, use the post format, instead.
    if ( $is_new_post && ! isset( $editor_settings['template'] ) && 'post' === $post->post_type ) {
    	$post_format = get_post_format( $post );
    	if ( in_array( $post_format, array( 'audio', 'gallery', 'image', 'quote', 'video' ), true ) ) {
    		$editor_settings['template'] = array( array( "core/$post_format" ) );
    	}
    }
    
    /**
     * Scripts
     */
    wp_enqueue_media(
    	array(
    		'post' => $post->ID,
    	)
    );
    wp_tinymce_inline_scripts();
    wp_enqueue_editor();
    
    /**
     * Styles
     */
    wp_enqueue_style( 'wp-edit-post' );
    wp_enqueue_style( 'wp-format-library' );
    
    /**
     * Fires after block assets have been enqueued for the editing interface.
     *
     * Call `add_action` on any hook before 'admin_enqueue_scripts'.
     *
     * In the function call you supply, simply use `wp_enqueue_script` and
     * `wp_enqueue_style` to add your functionality to the block editor.
     *
     * @since 5.0.0
     */
    do_action( 'enqueue_block_editor_assets' );
    
    // In order to duplicate classic meta box behaviour, we need to run the classic meta box actions.
    require_once ABSPATH . 'wp-admin/includes/meta-boxes.php';
    register_and_do_post_meta_boxes( $post );
    
    // Check if the Custom Fields meta box has been removed at some point.
    $core_meta_boxes = $wp_meta_boxes[ $current_screen->id ]['normal']['core'];
    if ( ! isset( $core_meta_boxes['postcustom'] ) || ! $core_meta_boxes['postcustom'] ) {
    	unset( $editor_settings['enableCustomFields'] );
    }
    
    /**
     * Filters the settings to pass to the block editor.
     *
     * @since 5.0.0
     *
     * @param array   $editor_settings Default editor settings.
     * @param WP_Post $post            Post being edited.
     */
    $editor_settings = apply_filters( 'block_editor_settings', $editor_settings, $post );
    
    $init_script = <<<JS
    ( function() {
    	window._wpLoadBlockEditor = new Promise( function( resolve ) {
    		wp.domReady( function() {
    			resolve( wp.editPost.initializeEditor( 'editor', "%s", %d, %s, %s ) );
    		} );
    	} );
    } )();
    JS;
    
    $script = sprintf(
    	$init_script,
    	$post->post_type,
    	$post->ID,
    	wp_json_encode( $editor_settings ),
    	wp_json_encode( $initial_edits )
    );
    wp_add_inline_script( 'wp-edit-post', $script );
    
    require_once ABSPATH . 'wp-admin/admin-header.php';
    ?>
    
    <div class="block-editor">
    	<h1 class="screen-reader-text hide-if-no-js"><?php echo esc_html( $title ); ?></h1>
    	<div id="editor" class="block-editor__container hide-if-no-js"></div>
    	<div id="metaboxes" class="hidden">
    		<?php the_block_editor_meta_boxes(); ?>
    	</div>
    
    	<?php // JavaScript is disabled. ?>
    	<div class="wrap hide-if-js block-editor-no-js">
    		<h1 class="wp-heading-inline"><?php echo esc_html( $title ); ?></h1>
    		<div class="notice notice-error notice-alt">
    			<p>
    				<?php
    					$message = sprintf(
    						/* translators: %s: A link to install the Classic Editor plugin. */
    						__( 'The block editor requires JavaScript. Please enable JavaScript in your browser settings, or try the <a href="%s">Classic Editor plugin</a>.' ),
    						esc_url( wp_nonce_url( self_admin_url( 'plugin-install.php?tab=favorites&user=wordpressdotorg&save=0' ), 'save_wporg_username_' . get_current_user_id() ) )
    					);
    
    					/**
    					 * Filters the message displayed in the block editor interface when JavaScript is
    					 * not enabled in the browser.
    					 *
    					 * @since 5.0.3
    					 *
    					 * @param string  $message The message being displayed.
    					 * @param WP_Post $post    The post being edited.
    					 */
    					echo apply_filters( 'block_editor_no_javascript_message', $message, $post );
    					?>
    			</p>
    		</div>
    	</div>
    </div>