<?php

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namespace WPForms\Admin;

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/**

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* Class Loader gives ability to track/load all admin modules.

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*

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* @since 1.5.0

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*/

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class Loader {

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/**

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* Get the instance of a class and store it in itself.

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*

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* @since 1.5.0

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*/

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public static function get_instance() {

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static $instance;

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if ( ! $instance ) {

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$instance = new self();

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}

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return $instance;

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}

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/**

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* Loader constructor.

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*

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* @since 1.5.0

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*/

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public function __construct() {

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$core_class_names = [

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'Connect',

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'FlyoutMenu',

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'Builder\LicenseAlert',

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'Builder\Builder',

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'Pages\Community',

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'Pages\SMTP',

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'Pages\Analytics',

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'Entries\PrintPreview',

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];

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$class_names = \apply_filters( 'wpforms_admin_classes_available', $core_class_names );

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foreach ( $class_names as $class_name ) {

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$this->register_class( $class_name );

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}

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}

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/**

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* Register a new class.

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*

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* @since 1.5.0

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*

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* @param string $class_name Class name to register.

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*/

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public function register_class( $class_name ) {

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$class_name = sanitize_text_field( $class_name );

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// Load Lite class if exists.

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if ( class_exists( 'WPForms\Lite\Admin\\' . $class_name ) && ! wpforms()->is_pro() ) {

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$class_name = 'WPForms\Lite\Admin\\' . $class_name;

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new $class_name();

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return;

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}

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// Load Pro class if exists.

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if ( class_exists( 'WPForms\Pro\Admin\\' . $class_name ) && wpforms()->is_pro() ) {

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$class_name = 'WPForms\Pro\Admin\\' . $class_name;

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new $class_name();

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return;

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}

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// Load general class if neither Pro nor Lite class exists.

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if ( class_exists( __NAMESPACE__ . '\\' . $class_name ) ) {

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$class_name = __NAMESPACE__ . '\\' . $class_name;

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new $class_name();

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}

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}

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}

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