<?php
/**
 * Customize API: WP_Customize_Code_Editor_Control class
 *
 * @package WordPress
 * @subpackage Customize
 * @since 4.9.0
 */

/**
 * Customize Code Editor Control class.
 *
 * @since 4.9.0
 *
 * @see WP_Customize_Control
 */
class WP_Customize_Code_Editor_Control extends WP_Customize_Control {

    /**
     * Customize control type.
     *
     * @since 4.9.0
     * @var string
     */
    public $type = 'code_editor';

    /**
     * Type of code that is being edited.
     *
     * @since 4.9.0
     * @var string
     */
    public $code_type = '';

    /**
     * Code editor settings.
     *
     * @see wp_enqueue_code_editor()
     * @since 4.9.0
     * @var array|false
     */
    public $editor_settings = array();

    /**
     * Enqueue control related scripts/styles.
     *
     * @since 4.9.0
     */
    public function enqueue() {
        $this->editor_settings = wp_enqueue_code_editor(
            array_merge(
                array(
                    'type'       => $this->code_type,
                    'codemirror' => array(
                        'indentUnit' => 2,
                        'tabSize'    => 2,
                    ),
                ),
                $this->editor_settings
            )
        );
    }

    /**
     * Refresh the parameters passed to the JavaScript via JSON.
     *
     * @since 4.9.0
     *
     * @see WP_Customize_Control::json()
     *
     * @return array Array of parameters passed to the JavaScript.
     */
    public function json() {
        $json                    = parent::json();
        $json['editor_settings'] = $this->editor_settings;
        $json['input_attrs']     = $this->input_attrs;
        return $json;
    }

    /**
     * Don't render the control content from PHP, as it's rendered via JS on load.
     *
     * @since 4.9.0
     */
    public function render_content() {}

    /**
     * Render a JS template for control display.
     *
     * @since 4.9.0
     */
    public function content_template() {
        ?>
        <# var elementIdPrefix = 'el' + String( Math.random() ); #>
        <# if ( data.label ) { #>
            <label for="{{ elementIdPrefix }}_editor" class="customize-control-title">
                {{ data.label }}
            </label>
        <# } #>
        <# if ( data.description ) { #>
            <span class="description customize-control-description">{{{ data.description }}}</span>
        <# } #>
        <div class="customize-control-notifications-container"></div>
        <textarea id="{{ elementIdPrefix }}_editor"
            <# _.each( _.extend( { 'class': 'code' }, data.input_attrs ), function( value, key ) { #>
                {{{ key }}}="{{ value }}"
            <# }); #>
            ></textarea>
        <?php
    }
}