205 lines
6.3 KiB
PHP
205 lines
6.3 KiB
PHP
<?php
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/**
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* Widget API: WP_Widget_Text class
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*
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* @package WordPress
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* @subpackage Widgets
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* @since 4.4.0
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*/
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/**
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* Core class used to implement a Text widget.
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*
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* @since 2.8.0
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*
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* @see WP_Widget
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*/
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class WP_Widget_Text extends WP_Widget {
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/**
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* Sets up a new Text widget instance.
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*
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* @since 2.8.0
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* @access public
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*/
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public function __construct() {
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$widget_ops = array(
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'classname' => 'widget_text',
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'description' => __( 'Arbitrary text or HTML.' ),
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'customize_selective_refresh' => true,
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);
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$control_ops = array(
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'width' => 400,
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'height' => 350,
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);
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parent::__construct( 'text', __( 'Text' ), $widget_ops, $control_ops );
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}
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/**
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* Add hooks for enqueueing assets when registering all widget instances of this widget class.
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*
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* @since 4.8.0
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* @access public
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*/
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public function _register() {
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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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// 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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parent::_register();
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}
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/**
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* Outputs the content for the current Text widget instance.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $args Display arguments including 'before_title', 'after_title',
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* 'before_widget', and 'after_widget'.
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* @param array $instance Settings for the current Text widget instance.
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*/
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public function widget( $args, $instance ) {
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/** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */
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$title = apply_filters( 'widget_title', empty( $instance['title'] ) ? '' : $instance['title'], $instance, $this->id_base );
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$widget_text = ! empty( $instance['text'] ) ? $instance['text'] : '';
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/**
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* Filters the content of the Text widget.
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*
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* @since 2.3.0
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* @since 4.4.0 Added the `$this` parameter.
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*
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* @param string $widget_text The widget content.
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* @param array $instance Array of settings for the current widget.
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* @param WP_Widget_Text $this Current Text widget instance.
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*/
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$text = apply_filters( 'widget_text', $widget_text, $instance, $this );
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if ( isset( $instance['filter'] ) ) {
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if ( 'content' === $instance['filter'] ) {
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/**
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* Filters the content of the Text widget to apply changes expected from the visual (TinyMCE) editor.
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*
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* By default a subset of the_content filters are applied, including wpautop and wptexturize.
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*
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* @since 4.8.0
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*
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* @param string $widget_text The widget content.
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* @param array $instance Array of settings for the current widget.
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* @param WP_Widget_Text $this Current Text widget instance.
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*/
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$text = apply_filters( 'widget_text_content', $widget_text, $instance, $this );
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} elseif ( $instance['filter'] ) {
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$text = wpautop( $text ); // Back-compat for instances prior to 4.8.
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}
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}
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echo $args['before_widget'];
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if ( ! empty( $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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<div class="textwidget"><?php echo $text; ?></div>
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<?php
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echo $args['after_widget'];
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}
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/**
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* Handles updating settings for the current Text widget instance.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $new_instance New settings for this instance as input by the user via
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* WP_Widget::form().
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* @param array $old_instance Old settings for this instance.
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* @return array Settings to save or bool false to cancel saving.
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*/
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public function update( $new_instance, $old_instance ) {
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$instance = $old_instance;
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$instance['title'] = sanitize_text_field( $new_instance['title'] );
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if ( current_user_can( 'unfiltered_html' ) ) {
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$instance['text'] = $new_instance['text'];
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} else {
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$instance['text'] = wp_kses_post( $new_instance['text'] );
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}
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/*
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* Re-use legacy 'filter' (wpautop) property to now indicate content filters will always apply.
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* Prior to 4.8, this is a boolean value used to indicate whether or not wpautop should be
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* applied. By re-using this property, downgrading WordPress from 4.8 to 4.7 will ensure
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* that the content for Text widgets created with TinyMCE will continue to get wpautop.
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*/
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$instance['filter'] = 'content';
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return $instance;
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}
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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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* @access public
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*/
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public function enqueue_admin_scripts() {
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wp_enqueue_editor();
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wp_enqueue_script( 'text-widgets' );
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}
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/**
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* Outputs the Text widget settings form.
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*
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* @since 2.8.0
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* @since 4.8.0 Form only contains hidden inputs which are synced with JS template.
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* @access public
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* @see WP_Widget_Visual_Text::render_control_template_scripts()
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*
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* @param array $instance Current settings.
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* @return void
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*/
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public function form( $instance ) {
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$instance = wp_parse_args(
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(array) $instance,
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array(
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'title' => '',
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'text' => '',
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)
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);
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?>
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<input id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" class="title" type="hidden" value="<?php echo esc_attr( $instance['title'] ); ?>">
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<input id="<?php echo $this->get_field_id( 'text' ); ?>" name="<?php echo $this->get_field_name( 'text' ); ?>" class="text" type="hidden" value="<?php echo esc_attr( $instance['text'] ); ?>">
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<?php
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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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* @access public
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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-text-control-fields">
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<# var elementIdPrefix = 'el' + String( Math.random() ).replace( /\D/g, '' ) + '_' #>
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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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<p>
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<label for="{{ elementIdPrefix }}text" class="screen-reader-text"><?php esc_html_e( 'Content:' ); ?></label>
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<textarea id="{{ elementIdPrefix }}text" class="widefat text" style="height: 200px" rows="16" cols="20"></textarea>
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</p>
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</script>
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<?php
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}
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}
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