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/**

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* Class NF_Abstracts_Field

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abstract class NF_Abstracts_Field extends NF_Abstracts_Element

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{

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/**

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* @var string

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protected $_name = '';

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/**

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* @var string

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protected $_nicename = '';

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/**

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* @var string

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protected $_section = '';

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/**

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* @var string

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protected $_icon = 'square-o';

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/**

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* @var array

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protected $_aliases = array();

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/**

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* @var array

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protected $_settings = array();

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/**

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* @var array

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protected $_settings_all_fields = array();

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/**

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* @var array

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protected $_settings_exclude = array();

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/**

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* @var array

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protected $_settings_only = array();

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/**

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* @var array

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protected $_use_merge_tags = array( 'user', 'post', 'system', 'fields' );

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/**

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* @var array

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protected $_use_merge_tags_include = array();

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/**

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* @var array

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protected $_use_merge_tags_exclude = array();

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/**

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* @var string

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protected $_test_value = 'test';

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/**

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* @var string

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protected $_attr = '';

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/**

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* @var string

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protected $_type = '';

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/**

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* @var string

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protected $_parent_type = '';

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/**

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* @var string

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public static $_base_template = 'input';

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/**

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* @var array

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protected $_templates = array();

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/**

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* @var string

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protected $_wrap_template = 'wrap';

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/**

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* @var array

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protected $_old_classname = '';

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/**

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* @var bool

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protected $_show_in_builder = true;

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//-----------------------------------------------------

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// Public Methods

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//-----------------------------------------------------

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/**

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* Constructor

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public function __construct()

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{

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if( ! empty( $this->_settings_only ) ){

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$this->_settings = array_merge( $this->_settings, $this->_settings_only );

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} else {

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$this->_settings = array_merge( $this->_settings_all_fields, $this->_settings );

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$this->_settings = array_diff( $this->_settings, $this->_settings_exclude );

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}

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$this->_settings = $this->load_settings( $this->_settings );

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$this->_test_value = apply_filters( 'ninja_forms_field_' . $this->_name . '_test_value', $this->_test_value );

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add_filter( 'ninja_forms_localize_field_settings_' . $this->_type, array( $this, 'localize_settings' ), 10, 2 );

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}

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/**

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* Validate

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* @param $field

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* @param $data

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* @return array $errors

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public function validate( $field, $data )

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{

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$errors = array();

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// Required check.

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if( is_array( $field[ 'value' ] ) && "repeater" !== $field[ 'type' ] ){

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$field[ 'value' ] = implode( '', $field[ 'value' ] );

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}

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if( isset( $field['required'] ) && 1 == intval( $field['required'] ) ) {

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$val = trim( $field['value'] );

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if( empty( $val ) && '0' !== $val ){

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$errors['slug'] = 'required-error';

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$errors['message'] = esc_html__('This field is required.', 'ninja-forms');

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}

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}

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return $errors;

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}

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public function process( $field, $data )

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{

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return $data;

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}

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/**

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* Admin Form Element

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* Returns the output for editing fields in a submission.

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* @param $id

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* @param $value

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* @return string

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public function admin_form_element( $id, $value )

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{

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return '<input class="widefat" name="fields[' . absint( $id ) . ']" value="' . esc_attr( $value ) . '" type="text" />';

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}

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public function get_name()

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{

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return $this->_name;

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}

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public function get_nicename()

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{

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return $this->_nicename;

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}

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public function get_section()

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{

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return $this->_section;

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}

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public function get_icon()

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{

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return $this->_icon;

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}

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public function get_aliases()

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{

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return $this->_aliases;

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}

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public function get_type()

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{

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return $this->_type;

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}

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public function get_parent_type()

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{

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if( $this->_parent_type ){

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return $this->_parent_type;

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}

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// If a type is not set, return 'textbox'

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return ( get_parent_class(self::class) && isset ( parent::$_type ) ) ? parent::$_type : 'textbox';

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}

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public function get_settings()

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{

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return $this->_settings;

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}

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public function use_merge_tags()

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{

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$use_merge_tags = array_merge( $this->_use_merge_tags, $this->_use_merge_tags_include );

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$use_merge_tags = array_diff( $use_merge_tags, $this->_use_merge_tags_exclude );

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return $use_merge_tags;

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}

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public function get_test_value()

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{

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return $this->_test_value;

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}

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public function get_templates()

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{

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$templates = (array) $this->_templates;

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// Create a reflection for examining the parent

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$reflection = new ReflectionClass( $this );

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$parent_class = $reflection->getParentClass();

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if ( $parent_class->isAbstract() ) {

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$parent_class_name = $parent_class->getName();

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$parent_templates = call_user_func( array( $parent_class_name, 'get_base_template' ) ); // Parent Class' Static Property

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return array_merge( $templates, (array) $parent_templates );

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}

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$parent_class_name = strtolower( str_replace('NF_Fields_', '', $parent_class->getName() ) );

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if( ! isset( Ninja_Forms()->fields[ $parent_class_name ] ) ) return $templates;

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$parent = Ninja_Forms()->fields[ $parent_class_name ];

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return array_merge($templates, $parent->get_templates());

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}

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public function get_wrap_template()

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{

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return $this->_wrap_template;

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}

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public function get_old_classname()

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{

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return $this->_old_classname;

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}

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public function show_in_builder() {

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return $this->_show_in_builder;

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}

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protected function load_settings( $only_settings = array() )

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{

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$settings = array();

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// Loads a settings array from the FieldSettings configuration file.

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$all_settings = Ninja_Forms::config( 'FieldSettings' );

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foreach( $only_settings as $setting ){

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if( isset( $all_settings[ $setting ]) ){

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$settings[ $setting ] = $all_settings[ $setting ];

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}

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}

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return $settings = apply_filters( 'ninja_forms_field_load_settings', $settings, $this->_name, $this->get_parent_type() );

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}

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public static function get_base_template()

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{

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return self::$_base_template;

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}

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public static function sort_by_order( $a, $b )

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{

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return $a->get_setting( 'order' ) - $b->get_setting( 'order' );

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}

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public function localize_settings( $settings, $form_id ) {

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return $settings;

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}

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}

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