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444 lines
14 KiB
444 lines
14 KiB
<?php |
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/** |
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* Widget API: WP_Media_Widget class |
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* |
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* @package WordPress |
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* @subpackage Widgets |
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* @since 4.8.0 |
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*/ |
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/** |
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* Core class that implements a media widget. |
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* |
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* @since 4.8.0 |
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* |
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* @see WP_Widget |
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*/ |
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abstract class WP_Widget_Media extends WP_Widget { |
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/** |
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* Translation labels. |
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* |
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* @since 4.8.0 |
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* @var array |
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*/ |
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public $l10n = array( |
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'add_to_widget' => '', |
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'replace_media' => '', |
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'edit_media' => '', |
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'media_library_state_multi' => '', |
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'media_library_state_single' => '', |
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'missing_attachment' => '', |
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'no_media_selected' => '', |
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'add_media' => '', |
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); |
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/** |
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* Whether or not the widget has been registered yet. |
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* |
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* @since 4.8.1 |
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* @var bool |
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*/ |
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protected $registered = false; |
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/** |
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* Constructor. |
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* |
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* @since 4.8.0 |
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* |
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* @param string $id_base Base ID for the widget, lowercase and unique. |
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* @param string $name Name for the widget displayed on the configuration page. |
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* @param array $widget_options Optional. Widget options. See wp_register_sidebar_widget() for |
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* information on accepted arguments. Default empty array. |
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* @param array $control_options Optional. Widget control options. See wp_register_widget_control() |
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* for information on accepted arguments. Default empty array. |
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*/ |
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public function __construct( $id_base, $name, $widget_options = array(), $control_options = array() ) { |
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$widget_opts = wp_parse_args( $widget_options, array( |
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'description' => __( 'A media item.' ), |
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'customize_selective_refresh' => true, |
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'mime_type' => '', |
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) ); |
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$control_opts = wp_parse_args( $control_options, array() ); |
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$l10n_defaults = array( |
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'no_media_selected' => __( 'No media selected' ), |
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'add_media' => _x( 'Add Media', 'label for button in the media widget' ), |
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'replace_media' => _x( 'Replace Media', 'label for button in the media widget; should preferably not be longer than ~13 characters long' ), |
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'edit_media' => _x( 'Edit Media', 'label for button in the media widget; should preferably not be longer than ~13 characters long' ), |
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'add_to_widget' => __( 'Add to Widget' ), |
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'missing_attachment' => sprintf( |
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/* translators: %s: URL to media library */ |
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__( 'We can’t find that file. Check your <a href="%s">media library</a> and make sure it wasn’t deleted.' ), |
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esc_url( admin_url( 'upload.php' ) ) |
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), |
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/* translators: %d: widget count */ |
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'media_library_state_multi' => _n_noop( 'Media Widget (%d)', 'Media Widget (%d)' ), |
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'media_library_state_single' => __( 'Media Widget' ), |
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'unsupported_file_type' => __( 'Looks like this isn’t the correct kind of file. Please link to an appropriate file instead.' ), |
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); |
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$this->l10n = array_merge( $l10n_defaults, array_filter( $this->l10n ) ); |
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parent::__construct( |
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$id_base, |
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$name, |
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$widget_opts, |
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$control_opts |
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); |
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} |
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/** |
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* Add hooks while registering all widget instances of this widget class. |
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* |
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* @since 4.8.0 |
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* |
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* @param integer $number Optional. The unique order number of this widget instance |
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* compared to other instances of the same class. Default -1. |
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*/ |
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public function _register_one( $number = -1 ) { |
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parent::_register_one( $number ); |
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if ( $this->registered ) { |
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return; |
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} |
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$this->registered = true; |
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// Note that the widgets component in the customizer will also do the 'admin_print_scripts-widgets.php' action in WP_Customize_Widgets::print_scripts(). |
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add_action( 'admin_print_scripts-widgets.php', array( $this, 'enqueue_admin_scripts' ) ); |
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if ( $this->is_preview() ) { |
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add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_preview_scripts' ) ); |
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} |
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// Note that the widgets component in the customizer will also do the 'admin_footer-widgets.php' action in WP_Customize_Widgets::print_footer_scripts(). |
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add_action( 'admin_footer-widgets.php', array( $this, 'render_control_template_scripts' ) ); |
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add_filter( 'display_media_states', array( $this, 'display_media_state' ), 10, 2 ); |
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} |
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/** |
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* Get schema for properties of a widget instance (item). |
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* |
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* @since 4.8.0 |
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* |
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* @see WP_REST_Controller::get_item_schema() |
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* @see WP_REST_Controller::get_additional_fields() |
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* @link https://core.trac.wordpress.org/ticket/35574 |
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* @return array Schema for properties. |
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*/ |
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public function get_instance_schema() { |
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$schema = array( |
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'attachment_id' => array( |
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'type' => 'integer', |
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'default' => 0, |
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'minimum' => 0, |
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'description' => __( 'Attachment post ID' ), |
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'media_prop' => 'id', |
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), |
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'url' => array( |
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'type' => 'string', |
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'default' => '', |
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'format' => 'uri', |
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'description' => __( 'URL to the media file' ), |
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), |
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'title' => array( |
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'type' => 'string', |
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'default' => '', |
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'sanitize_callback' => 'sanitize_text_field', |
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'description' => __( 'Title for the widget' ), |
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'should_preview_update' => false, |
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), |
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); |
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/** |
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* Filters the media widget instance schema to add additional properties. |
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* |
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* @since 4.9.0 |
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* |
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* @param array $schema Instance schema. |
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* @param WP_Widget_Media $this Widget object. |
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*/ |
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$schema = apply_filters( "widget_{$this->id_base}_instance_schema", $schema, $this ); |
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return $schema; |
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} |
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/** |
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* Determine if the supplied attachment is for a valid attachment post with the specified MIME type. |
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* |
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* @since 4.8.0 |
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* |
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* @param int|WP_Post $attachment Attachment post ID or object. |
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* @param string $mime_type MIME type. |
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* @return bool Is matching MIME type. |
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*/ |
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public function is_attachment_with_mime_type( $attachment, $mime_type ) { |
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if ( empty( $attachment ) ) { |
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return false; |
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} |
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$attachment = get_post( $attachment ); |
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if ( ! $attachment ) { |
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return false; |
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} |
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if ( 'attachment' !== $attachment->post_type ) { |
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return false; |
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} |
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return wp_attachment_is( $mime_type, $attachment ); |
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} |
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/** |
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* Sanitize a token list string, such as used in HTML rel and class attributes. |
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* |
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* @since 4.8.0 |
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* |
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* @link http://w3c.github.io/html/infrastructure.html#space-separated-tokens |
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* @link https://developer.mozilla.org/en-US/docs/Web/API/DOMTokenList |
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* @param string|array $tokens List of tokens separated by spaces, or an array of tokens. |
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* @return string Sanitized token string list. |
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*/ |
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public function sanitize_token_list( $tokens ) { |
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if ( is_string( $tokens ) ) { |
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$tokens = preg_split( '/\s+/', trim( $tokens ) ); |
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} |
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$tokens = array_map( 'sanitize_html_class', $tokens ); |
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$tokens = array_filter( $tokens ); |
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return join( ' ', $tokens ); |
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} |
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/** |
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* Displays the widget on the front-end. |
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* |
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* @since 4.8.0 |
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* |
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* @see WP_Widget::widget() |
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* |
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* @param array $args Display arguments including before_title, after_title, before_widget, and after_widget. |
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* @param array $instance Saved setting from the database. |
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*/ |
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public function widget( $args, $instance ) { |
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$instance = wp_parse_args( $instance, wp_list_pluck( $this->get_instance_schema(), 'default' ) ); |
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// Short-circuit if no media is selected. |
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if ( ! $this->has_content( $instance ) ) { |
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return; |
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} |
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echo $args['before_widget']; |
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
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$title = apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base ); |
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if ( $title ) { |
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echo $args['before_title'] . $title . $args['after_title']; |
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} |
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/** |
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* Filters the media widget instance prior to rendering the media. |
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* |
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* @since 4.8.0 |
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* |
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* @param array $instance Instance data. |
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* @param array $args Widget args. |
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* @param WP_Widget_Media $this Widget object. |
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*/ |
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$instance = apply_filters( "widget_{$this->id_base}_instance", $instance, $args, $this ); |
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$this->render_media( $instance ); |
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echo $args['after_widget']; |
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} |
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/** |
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* Sanitizes the widget form values as they are saved. |
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* |
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* @since 4.8.0 |
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* |
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* @see WP_Widget::update() |
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* @see WP_REST_Request::has_valid_params() |
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* @see WP_REST_Request::sanitize_params() |
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* |
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* @param array $new_instance Values just sent to be saved. |
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* @param array $instance Previously saved values from database. |
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* @return array Updated safe values to be saved. |
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*/ |
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public function update( $new_instance, $instance ) { |
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$schema = $this->get_instance_schema(); |
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foreach ( $schema as $field => $field_schema ) { |
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if ( ! array_key_exists( $field, $new_instance ) ) { |
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continue; |
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} |
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$value = $new_instance[ $field ]; |
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// Workaround for rest_validate_value_from_schema() due to the fact that rest_is_boolean( '' ) === false, while rest_is_boolean( '1' ) is true. |
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if ( 'boolean' === $field_schema['type'] && '' === $value ) { |
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$value = false; |
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} |
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if ( true !== rest_validate_value_from_schema( $value, $field_schema, $field ) ) { |
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continue; |
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} |
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$value = rest_sanitize_value_from_schema( $value, $field_schema ); |
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// @codeCoverageIgnoreStart |
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if ( is_wp_error( $value ) ) { |
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continue; // Handle case when rest_sanitize_value_from_schema() ever returns WP_Error as its phpdoc @return tag indicates. |
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} |
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// @codeCoverageIgnoreEnd |
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if ( isset( $field_schema['sanitize_callback'] ) ) { |
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$value = call_user_func( $field_schema['sanitize_callback'], $value ); |
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} |
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if ( is_wp_error( $value ) ) { |
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continue; |
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} |
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$instance[ $field ] = $value; |
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} |
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return $instance; |
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} |
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/** |
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* Render the media on the frontend. |
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* |
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* @since 4.8.0 |
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* |
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* @param array $instance Widget instance props. |
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* @return string |
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*/ |
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abstract public function render_media( $instance ); |
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/** |
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* Outputs the settings update form. |
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* |
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* Note that the widget UI itself is rendered with JavaScript via `MediaWidgetControl#render()`. |
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* |
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* @since 4.8.0 |
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* |
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* @see \WP_Widget_Media::render_control_template_scripts() Where the JS template is located. |
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* @param array $instance Current settings. |
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* @return void |
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*/ |
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final public function form( $instance ) { |
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$instance_schema = $this->get_instance_schema(); |
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$instance = wp_array_slice_assoc( |
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wp_parse_args( (array) $instance, wp_list_pluck( $instance_schema, 'default' ) ), |
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array_keys( $instance_schema ) |
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); |
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foreach ( $instance as $name => $value ) : ?> |
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<input |
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type="hidden" |
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data-property="<?php echo esc_attr( $name ); ?>" |
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class="media-widget-instance-property" |
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name="<?php echo esc_attr( $this->get_field_name( $name ) ); ?>" |
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id="<?php echo esc_attr( $this->get_field_id( $name ) ); // Needed specifically by wpWidgets.appendTitle(). ?>" |
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value="<?php echo esc_attr( is_array( $value ) ? join( ',', $value ) : strval( $value ) ); ?>" |
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/> |
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<?php |
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endforeach; |
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} |
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/** |
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* Filters the default media display states for items in the Media list table. |
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* |
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* @since 4.8.0 |
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* |
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* @param array $states An array of media states. |
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* @param WP_Post $post The current attachment object. |
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* @return array |
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*/ |
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public function display_media_state( $states, $post = null ) { |
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if ( ! $post ) { |
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$post = get_post(); |
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} |
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// Count how many times this attachment is used in widgets. |
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$use_count = 0; |
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foreach ( $this->get_settings() as $instance ) { |
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if ( isset( $instance['attachment_id'] ) && $instance['attachment_id'] === $post->ID ) { |
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$use_count++; |
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} |
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} |
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if ( 1 === $use_count ) { |
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$states[] = $this->l10n['media_library_state_single']; |
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} elseif ( $use_count > 0 ) { |
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$states[] = sprintf( translate_nooped_plural( $this->l10n['media_library_state_multi'], $use_count ), number_format_i18n( $use_count ) ); |
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} |
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return $states; |
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} |
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/** |
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* Enqueue preview scripts. |
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* |
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* These scripts normally are enqueued just-in-time when a widget is rendered. |
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* In the customizer, however, widgets can be dynamically added and rendered via |
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* selective refresh, and so it is important to unconditionally enqueue them in |
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* case a widget does get added. |
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* |
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* @since 4.8.0 |
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*/ |
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public function enqueue_preview_scripts() {} |
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/** |
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* Loads the required scripts and styles for the widget control. |
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* |
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* @since 4.8.0 |
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*/ |
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public function enqueue_admin_scripts() { |
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wp_enqueue_media(); |
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wp_enqueue_script( 'media-widgets' ); |
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} |
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/** |
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* Render form template scripts. |
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* |
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* @since 4.8.0 |
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*/ |
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public function render_control_template_scripts() { |
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?> |
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<script type="text/html" id="tmpl-widget-media-<?php echo esc_attr( $this->id_base ); ?>-control"> |
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<# var elementIdPrefix = 'el' + String( Math.random() ) + '_' #> |
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<p> |
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<label for="{{ elementIdPrefix }}title"><?php esc_html_e( 'Title:' ); ?></label> |
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<input id="{{ elementIdPrefix }}title" type="text" class="widefat title"> |
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</p> |
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<div class="media-widget-preview <?php echo esc_attr( $this->id_base ); ?>"> |
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<div class="attachment-media-view"> |
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<div class="placeholder"><?php echo esc_html( $this->l10n['no_media_selected'] ); ?></div> |
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</div> |
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</div> |
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<p class="media-widget-buttons"> |
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<button type="button" class="button edit-media selected"> |
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<?php echo esc_html( $this->l10n['edit_media'] ); ?> |
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</button> |
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<?php if ( ! empty( $this->l10n['replace_media'] ) ) : ?> |
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<button type="button" class="button change-media select-media selected"> |
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<?php echo esc_html( $this->l10n['replace_media'] ); ?> |
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</button> |
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<?php endif; ?> |
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<button type="button" class="button select-media not-selected"> |
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<?php echo esc_html( $this->l10n['add_media'] ); ?> |
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</button> |
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</p> |
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<div class="media-widget-fields"> |
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</div> |
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</script> |
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<?php |
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} |
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/** |
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* Whether the widget has content to show. |
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* |
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* @since 4.8.0 |
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* |
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* @param array $instance Widget instance props. |
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* @return bool Whether widget has content. |
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*/ |
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protected function has_content( $instance ) { |
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return ( $instance['attachment_id'] && 'attachment' === get_post_type( $instance['attachment_id'] ) ) || $instance['url']; |
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} |
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}
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