WordPress/wp-admin/edit-form-blocks.php
Sergey Biryukov 7f8d6eccd0 Meta Boxes: Add the block_editor_meta_box_hidden_fields action.
Lacking an appropriate action in the classic editor, plugins that add meta boxes have historically hooked into various actions in order to add hidden input fields.

This change also adds backwards compatibility for two of the most common: `edit_form_after_title`, and `edit_form_advanced`.

Props pento, danielbachhuber.
Merges [43882] to trunk.
Fixes #45283.
Built from https://develop.svn.wordpress.org/trunk@44241


git-svn-id: http://core.svn.wordpress.org/trunk@44071 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-12-17 03:18:47 +00:00

371 lines
10 KiB
PHP

<?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 string $title
* @global array $editor_styles
*/
global $post_type, $post_type_object, $post, $title, $editor_styles;
if ( ! empty( $post_type_object ) ) {
$title = $post_type_object->labels->edit_item;
}
// 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' ),
);
/**
* 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 array $preload_paths Array of paths to preload.
* @param object $post The post resource data.
*/
$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' => array(
'raw' => $post->post_title,
),
'content' => array(
'raw' => $post->post_content,
),
'excerpt' => array(
'raw' => $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,
'_wpnonce' => 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' ) );
/**
* 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 object $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'
),
),
);
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 );
$styles[] = array(
'css' => file_get_contents( get_theme_file_path( $style ) ),
'baseURL' => get_theme_file_uri( $style ),
);
}
}
}
// Lock settings.
$user_id = wp_check_post_lock( $post->ID );
if ( $user_id ) {
/** 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 );
$lock_details = array(
'isLocked' => false,
'activePostLock' => esc_attr( implode( ':', $active_post_lock ) ),
);
}
/**
* Filters the body placeholder text.
*
* @since 5.0.0
*
* @param string $text Placeholder text. Default 'Write your story'.
* @param WP_Post $post Post object.
*/
$body_placeholder = apply_filters( 'write_your_story', __( 'Write your story' ), $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' ),
'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' => 10,
'maxUploadFileSize' => $max_upload_size,
'allowedMimeTypes' => get_allowed_mime_types(),
'styles' => $styles,
'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' ),
),
);
$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 ( ! empty( $font_sizes ) ) {
$editor_settings['fontSizes'] = $font_sizes;
}
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" ) );
}
}
$init_script = <<<JS
( function() {
window._wpLoadBlockEditor = new Promise( function( resolve ) {
wp.domReady( function() {
resolve( wp.editPost.initializeEditor( 'editor', "%s", %d, %s, %s ) );
} );
} );
} )();
JS;
/**
* 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 );
$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 );
/**
* Scripts
*/
wp_enqueue_media(
array(
'post' => $post->ID,
)
);
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 );
require_once( ABSPATH . 'wp-admin/admin-header.php' );
?>
<div class="block-editor">
<h1 class="screen-reader-text"><?php echo esc_html( $post_type_object->labels->edit_item ); ?></h1>
<div id="editor" class="block-editor__container"></div>
<div id="metaboxes" class="hidden">
<?php the_block_editor_meta_boxes(); ?>
</div>
</div>