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<?php

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/**

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* Widget API: WP_Widget_Media_Audio class

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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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* Core class that implements an audio widget.

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* @since 4.8.0

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* @see WP_Widget_Media

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* @see WP_Widget

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class WP_Widget_Media_Audio extends WP_Widget_Media {

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/**

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* Constructor.

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* @since 4.8.0

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public function __construct() {

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parent::__construct(

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'media_audio',

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__( 'Audio' ),

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array(

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'description' => __( 'Displays an audio player.' ),

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'mime_type' => 'audio',

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)

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);

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$this->l10n = array_merge(

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$this->l10n,

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array(

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'no_media_selected' => __( 'No audio selected' ),

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'add_media' => _x( 'Add Audio', 'label for button in the audio widget' ),

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'replace_media' => _x( 'Replace Audio', 'label for button in the audio widget; should preferably not be longer than ~13 characters long' ),

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'edit_media' => _x( 'Edit Audio', 'label for button in the audio widget; should preferably not be longer than ~13 characters long' ),

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'missing_attachment' => sprintf(

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/* translators: %s: URL to media library. */

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__( 'That audio file cannot be found. Check your <a href="%s">media library</a> and make sure it was not deleted.' ),

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esc_url( admin_url( 'upload.php' ) )

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/* translators: %d: Widget count. */

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'media_library_state_multi' => _n_noop( 'Audio Widget (%d)', 'Audio Widget (%d)' ),

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'media_library_state_single' => __( 'Audio Widget' ),

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'unsupported_file_type' => __( 'Looks like this is not the correct kind of file. Please link to an audio file instead.' ),

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)

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);

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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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* @since 4.8.0

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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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public function get_instance_schema() {

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$schema = array(

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'preload' => array(

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'type' => 'string',

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'enum' => array( 'none', 'auto', 'metadata' ),

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'default' => 'none',

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'description' => __( 'Preload' ),

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'loop' => array(

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'type' => 'boolean',

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'default' => false,

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'description' => __( 'Loop' ),

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);

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foreach ( wp_get_audio_extensions() as $audio_extension ) {

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$schema[ $audio_extension ] = array(

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'type' => 'string',

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'default' => '',

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'format' => 'uri',

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/* translators: %s: Audio extension. */

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'description' => sprintf( __( 'URL to the %s audio source file' ), $audio_extension ),

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);

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}

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return array_merge( $schema, parent::get_instance_schema() );

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}

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/**

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* Render the media on the frontend.

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* @since 4.8.0

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* @param array $instance Widget instance props.

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public function render_media( $instance ) {

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$instance = array_merge( wp_list_pluck( $this->get_instance_schema(), 'default' ), $instance );

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$attachment = null;

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if ( $this->is_attachment_with_mime_type( $instance['attachment_id'], $this->widget_options['mime_type'] ) ) {

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$attachment = get_post( $instance['attachment_id'] );

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}

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if ( $attachment ) {

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$src = wp_get_attachment_url( $attachment->ID );

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} else {

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$src = $instance['url'];

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}

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echo wp_audio_shortcode(

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array_merge(

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$instance,

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compact( 'src' )

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)

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);

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}

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/**

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* Enqueue preview scripts.

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* These scripts normally are enqueued just-in-time when an audio shortcode is used.

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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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* @since 4.8.0

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public function enqueue_preview_scripts() {

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/** This filter is documented in wp-includes/media.php */

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if ( 'mediaelement' === apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ) ) {

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wp_enqueue_style( 'wp-mediaelement' );

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wp_enqueue_script( 'wp-mediaelement' );

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}

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}

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/**

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* Loads the required media files for the media manager and scripts for media widgets.

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* @since 4.8.0

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public function enqueue_admin_scripts() {

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parent::enqueue_admin_scripts();

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wp_enqueue_style( 'wp-mediaelement' );

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wp_enqueue_script( 'wp-mediaelement' );

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$handle = 'media-audio-widget';

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wp_enqueue_script( $handle );

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$exported_schema = array();

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foreach ( $this->get_instance_schema() as $field => $field_schema ) {

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$exported_schema[ $field ] = wp_array_slice_assoc( $field_schema, array( 'type', 'default', 'enum', 'minimum', 'format', 'media_prop', 'should_preview_update' ) );

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}

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wp_add_inline_script(

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$handle,

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sprintf(

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'wp.mediaWidgets.modelConstructors[ %s ].prototype.schema = %s;',

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wp_json_encode( $this->id_base ),

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wp_json_encode( $exported_schema )

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)

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);

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wp_add_inline_script(

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$handle,

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sprintf(

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wp.mediaWidgets.controlConstructors[ %1$s ].prototype.mime_type = %2$s;

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wp.mediaWidgets.controlConstructors[ %1$s ].prototype.l10n = _.extend( {}, wp.mediaWidgets.controlConstructors[ %1$s ].prototype.l10n, %3$s );

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wp_json_encode( $this->id_base ),

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wp_json_encode( $this->widget_options['mime_type'] ),

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wp_json_encode( $this->l10n )

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)

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);

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}

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/**

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* Render form template scripts.

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* @since 4.8.0

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public function render_control_template_scripts() {

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parent::render_control_template_scripts()

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<# if ( data.error && 'missing_attachment' === data.error ) { #>

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<?php

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wp_admin_notice(

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$this->l10n['missing_attachment'],

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array(

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'type' => 'error',

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'additional_classes' => array( 'notice-alt', 'notice-missing-attachment' ),

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)

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);

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<# } else if ( data.error ) { #>

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<?php

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wp_admin_notice(

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__( 'Unable to preview media due to an unknown error.' ),

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array(

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'type' => 'error',

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'additional_classes' => array( 'notice-alt' ),

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)

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);

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<# } else if ( data.model && data.model.src ) { #>

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<?php wp_underscore_audio_template(); ?>

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<# } #>

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</script>

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<?php

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}

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}

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