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<?php
/**
* Widget API: WP_Widget_Media_Audio class
*
* @package WordPress
* @subpackage Widgets
* @since 4.8.0
*/
/**
* Core class that implements an audio widget.
*
* @since 4.8.0
*
* @see WP_Widget_Media
* @see WP_Widget
*/
class WP_Widget_Media_Audio extends WP_Widget_Media {
/**
* Constructor.
*
* @since 4.8.0
*/
public function __construct() {
parent::__construct(
'media_audio',
__( 'Audio' ),
array(
'description' => __( 'Displays an audio player.' ),
'mime_type' => 'audio',
)
);
$this->l10n = array_merge(
$this->l10n,
array(
'no_media_selected' => __( 'No audio selected' ),
'add_media' => _x( 'Add Audio', 'label for button in the audio widget' ),
'replace_media' => _x( 'Replace Audio', 'label for button in the audio widget; should preferably not be longer than ~13 characters long' ),
'edit_media' => _x( 'Edit Audio', 'label for button in the audio widget; should preferably not be longer than ~13 characters long' ),
'missing_attachment' => sprintf(
/* translators: %s: URL to media library. */
__( 'That audio file cannot be found. Check your <a href="%s">media library</a> and make sure it was not deleted.' ),
esc_url( admin_url( 'upload.php' ) )
),
/* translators: %d: Widget count. */
'media_library_state_multi' => _n_noop( 'Audio Widget (%d)', 'Audio Widget (%d)' ),
'media_library_state_single' => __( 'Audio Widget' ),
'unsupported_file_type' => __( 'Looks like this is not the correct kind of file. Please link to an audio file instead.' ),
)
);
}
/**
* Get schema for properties of a widget instance (item).
*
* @since 4.8.0
*
* @see WP_REST_Controller::get_item_schema()
* @see WP_REST_Controller::get_additional_fields()
* @link https://core.trac.wordpress.org/ticket/35574
*
* @return array Schema for properties.
*/
public function get_instance_schema() {
$schema = array(
'preload' => array(
'type' => 'string',
'enum' => array( 'none', 'auto', 'metadata' ),
'default' => 'none',
'description' => __( 'Preload' ),
),
'loop' => array(
'type' => 'boolean',
'default' => false,
'description' => __( 'Loop' ),
),
);
foreach ( wp_get_audio_extensions() as $audio_extension ) {
$schema[ $audio_extension ] = array(
'type' => 'string',
'default' => '',
'format' => 'uri',
/* translators: %s: Audio extension. */
'description' => sprintf( __( 'URL to the %s audio source file' ), $audio_extension ),
);
}
return array_merge( $schema, parent::get_instance_schema() );
}
/**
* Render the media on the frontend.
*
* @since 4.8.0
*
* @param array $instance Widget instance props.
*/
public function render_media( $instance ) {
$instance = array_merge( wp_list_pluck( $this->get_instance_schema(), 'default' ), $instance );
$attachment = null;
if ( $this->is_attachment_with_mime_type( $instance['attachment_id'], $this->widget_options['mime_type'] ) ) {
$attachment = get_post( $instance['attachment_id'] );
}
if ( $attachment ) {
$src = wp_get_attachment_url( $attachment->ID );
} else {
$src = $instance['url'];
}
echo wp_audio_shortcode(
array_merge(
$instance,
compact( 'src' )
)
);
}
/**
* Enqueue preview scripts.
*
* These scripts normally are enqueued just-in-time when an audio shortcode is used.
* In the customizer, however, widgets can be dynamically added and rendered via
* selective refresh, and so it is important to unconditionally enqueue them in
* case a widget does get added.
*
* @since 4.8.0
*/
public function enqueue_preview_scripts() {
/** This filter is documented in wp-includes/media.php */
if ( 'mediaelement' === apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ) ) {
wp_enqueue_style( 'wp-mediaelement' );
wp_enqueue_script( 'wp-mediaelement' );
}
}
/**
* Loads the required media files for the media manager and scripts for media widgets.
*
* @since 4.8.0
*/
public function enqueue_admin_scripts() {
parent::enqueue_admin_scripts();
wp_enqueue_style( 'wp-mediaelement' );
wp_enqueue_script( 'wp-mediaelement' );
$handle = 'media-audio-widget';
wp_enqueue_script( $handle );
$exported_schema = array();
foreach ( $this->get_instance_schema() as $field => $field_schema ) {
$exported_schema[ $field ] = wp_array_slice_assoc( $field_schema, array( 'type', 'default', 'enum', 'minimum', 'format', 'media_prop', 'should_preview_update' ) );
}
wp_add_inline_script(
$handle,
sprintf(
'wp.mediaWidgets.modelConstructors[ %s ].prototype.schema = %s;',
wp_json_encode( $this->id_base ),
wp_json_encode( $exported_schema )
)
);
wp_add_inline_script(
$handle,
sprintf(
'
wp.mediaWidgets.controlConstructors[ %1$s ].prototype.mime_type = %2$s;
wp.mediaWidgets.controlConstructors[ %1$s ].prototype.l10n = _.extend( {}, wp.mediaWidgets.controlConstructors[ %1$s ].prototype.l10n, %3$s );
',
wp_json_encode( $this->id_base ),
wp_json_encode( $this->widget_options['mime_type'] ),
wp_json_encode( $this->l10n )
)
);
}
/**
* Render form template scripts.
*
* @since 4.8.0
*/
public function render_control_template_scripts() {
parent::render_control_template_scripts()
?>
<script type="text/html" id="tmpl-wp-media-widget-audio-preview">
<# if ( data.error && 'missing_attachment' === data.error ) { #>
<?php
wp_admin_notice(
$this->l10n['missing_attachment'],
array(
'type' => 'error',
'additional_classes' => array( 'notice-alt', 'notice-missing-attachment' ),
)
);
?>
<# } else if ( data.error ) { #>
<?php
wp_admin_notice(
__( 'Unable to preview media due to an unknown error.' ),
array(
'type' => 'error',
'additional_classes' => array( 'notice-alt' ),
)
);
?>
<# } else if ( data.model && data.model.src ) { #>
<?php wp_underscore_audio_template(); ?>
<# } #>
</script>
<?php
}
}