<?php if ( ! defined( 'ABSPATH' ) ) exit;

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/**

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* Class NF_Fields_Terms

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*/

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class NF_Fields_Terms extends NF_Fields_ListCheckbox

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{

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protected $_name = 'terms';

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protected $_type = 'terms';

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protected $_nicename = 'Terms List';

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protected $_section = '';

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protected $_icon = 'tags';

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protected $_templates = array( 'terms', 'listcheckbox' );

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protected $_settings = array( 'taxonomy', 'add_new_terms' );

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protected $_settings_exclude = array( 'required' );

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protected $_excluded_taxonomies = array(

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'post_format'

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);

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public function __construct()

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{

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parent::__construct();

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$this->_nicename = esc_html__( 'Terms List', 'ninja-forms' );

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// If we are on the ninja-forms page...

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// OR we're looking at nf_sub post types...

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// OR we're editing a single post...

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if ( ( ! empty( $_GET[ 'page' ] ) && 'ninja-forms' == $_GET[ 'page' ] ) ||

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( ! empty( $_GET[ 'post_type' ] ) && 'nf_sub' == $_GET[ 'post_type' ] ) ||

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isset( $_GET[ 'post' ] ) ) {

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// Initiate the termslist.

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add_action( 'admin_init', array( $this, 'init_settings' ) );

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}

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add_filter( 'ninja_forms_display_field', array( $this, 'active_taxonomy_field_check' ) );

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add_filter( 'ninja_forms_localize_field_' . $this->_type, array( $this, 'add_term_options' ) );

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add_filter( 'ninja_forms_localize_field_' . $this->_type . '_preview', array( $this, 'add_term_options' ) );

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add_filter( 'ninja_forms_merge_tag_value_' . $this->_type, array( $this, 'merge_tag_value' ), 10, 2 );

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$this->_settings[ 'options' ][ 'group' ] = '';

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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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public function init_settings()

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{

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$term_settings = array();

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$taxonomies = get_taxonomies( array( 'public' => true ), 'objects' );

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foreach( $taxonomies as $name => $taxonomy ){

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$tax_term_settings = array();

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if( in_array( $name, $this->_excluded_taxonomies ) ) continue;

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$this->_settings[ 'taxonomy' ][ 'options' ][] = array(

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'label' => $taxonomy->labels->name,

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'value' => $name

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);

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$terms = get_terms( $name, array( 'hide_empty' => false ) );

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foreach( $terms as $term ){

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// Check the slug instead of term_id to ensure we ONLY remove 'uncategorized'.

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if( 'uncategorized' == $term->slug ) continue;

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$tax_term_settings[] = array(

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'name' => 'taxonomy_term_' . $term->term_id,

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'type' => 'toggle',

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'label' => $term->name . ' (' . $term->count .')',

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'width' => 'one-third',

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'deps' => array(

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'taxonomy' => $name

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),

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);

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}

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if( empty( $tax_term_settings ) ){

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$tax_term_settings[] = array(

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'name' => $name . '_no_terms',

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'type' => 'html',

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'width' => 'full',

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'value' => sprintf( esc_html__( 'No available terms for this taxonomy. %sAdd a term%s', 'ninja-forms' ), '<a href="' . admin_url( "edit-tags.php?taxonomy=$name" ) . '">', '</a>' ),

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'deps' => array(

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'taxonomy' => $name

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)

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);

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}

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$term_settings = array_merge( $term_settings, $tax_term_settings );

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}

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$term_settings[] = array(

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'name' => '_no_taxonomy',

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'type' => 'html',

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'width' => 'full',

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'value' => esc_html__( 'No taxonomy selected.', 'ninja-forms' ),

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'deps' => array(

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'taxonomy' => ''

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)

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);

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$this->_settings[ 'taxonomy_terms' ] = array(

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'name' => 'taxonomy_terms',

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'type' => 'fieldset',

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'label' => esc_html__( 'Available Terms', 'ninja-forms' ),

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'width' => 'full',

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'group' => 'primary',

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'settings' => $term_settings

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);

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}

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public function active_taxonomy_field_check( $field )

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{

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if( $this->_type != $field->get_setting( 'type' ) ) return $field;

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$taxonomy = $field->get_setting( 'taxonomy' );

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if( ! taxonomy_exists( $taxonomy ) ) return FALSE;

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return $field;

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}

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public function add_term_options( $field )

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{

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$settings = ( is_object( $field ) ) ? $field->get_settings() : $field[ 'settings' ];

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$settings[ 'options' ] = array();

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if( isset( $settings[ 'taxonomy' ] ) && $settings[ 'taxonomy' ] ){

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$terms = get_terms( $settings[ 'taxonomy' ], array( 'hide_empty' => false ) );

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if( ! is_wp_error( $terms ) ){

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foreach( $terms as $term ) {

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if( ! isset( $settings[ 'taxonomy_term_' . $term->term_id ] ) ) continue;

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if( ! $settings[ 'taxonomy_term_' . $term->term_id ] ) continue;

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$settings['options'][] = array(

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'label' => $term->name,

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'value' => $term->term_id,

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'calc' => '',

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'selected' => 0,

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'order' => 0

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);

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}

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}

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}

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if( is_object( $field ) ) {

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$field->update_settings( $settings );

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} else {

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$field[ 'settings' ] = $settings;

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}

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return $field;

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}

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public function merge_tag_value( $value, $field )

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{

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$terms = explode( ',', $value );

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if( ! is_array( $terms ) ) {

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$term = get_term_by( 'id', $value, $field[ 'taxonomy' ] );

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if( $term ) {

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return $term->name;

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} else {

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return $value;

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}

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}

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$term_names = array();

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foreach( $terms as $term_id ){

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$term = get_term_by( 'id', $term_id, $field[ 'taxonomy' ] );

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$term_names[] = ( $term ) ? $term->name : $term_id; // If the term is `false`, fallback to the term_id.

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}

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return implode( ',', $term_names );

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}

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public function get_parent_type()

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{

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return 'listcheckbox';

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}

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}

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