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<?php
// Prevent loading this file directly
defined( 'ABSPATH' ) || exit;
require_once THE7_RWMB_FIELDS_DIR . 'select-advanced.php';
require_once THE7_RWMB_FIELDS_DIR . 'checkbox-list.php';
if ( ! class_exists( 'THE7_RWMB_Taxonomy_Field' ) )
{
class THE7_RWMB_Taxonomy_Field
{
/**
* Enqueue scripts and styles
*
* @return void
*/
static function admin_enqueue_scripts()
{
// THE7_RWMB_Select_Advanced_Field::admin_enqueue_scripts();
wp_enqueue_style( 'the7-mb-taxonomy', THE7_RWMB_CSS_URL . 'taxonomy.css', array(), THE7_RWMB_VER );
// wp_enqueue_script( 'the7-mb-taxonomy', THE7_RWMB_JS_URL . 'taxonomy.js', array( 'jquery', 'the7-mb-select-advanced', 'wp-ajax-response' ), THE7_RWMB_VER, true );
}
/**
* Add default value for 'taxonomy' field
*
* @param $field
*
* @return array
*/
static function normalize_field( $field )
{
$default_args = array(
'hide_empty' => false,
);
// Set default args
$field['options']['args'] = ! isset( $field['options']['args'] ) ? $default_args : wp_parse_args( $field['options']['args'], $default_args );
if ( empty( $field['placeholder'] ) ) {
$post_type_name = 'Term';
$tax = get_taxonomy( $field['options']['taxonomy'] );
if ( is_object( $tax ) ) {
$post_type_name = $tax->labels->singular_name;
}
$field['placeholder'] = sprintf( __( 'Select a %s', 'the7mk2' ), $post_type_name );
}
switch( $field['options']['type'] )
{
case 'select_advanced':
$field = THE7_RWMB_Select_Advanced_Field::normalize_field( $field );
break;
case 'checkbox_list':
case 'checkbox_tree':
$field = THE7_RWMB_Checkbox_List_Field::normalize_field( $field );
break;
case 'select':
case 'select_tree':
$field = THE7_RWMB_Select_Field::normalize_field( $field );
break;
default:
$field['options']['type'] = 'select';
$field = THE7_RWMB_Select_Field::normalize_field( $field );
}
if ( in_array( $field['options']['type'], array( 'checkbox_tree', 'select_tree' ) ) )
{
if ( isset( $field['options']['args']['parent'] ) )
{
$field['options']['parent'] = $field['options']['args']['parent'];
unset( $field['options']['args']['parent'] );
}
else
{
$field['options']['parent'] = 0;
}
}
$field['field_name'] = "{$field['id']}[]";
return $field;
}
/**
* Get field HTML
*
* @param $html
* @param $field
* @param $meta
*
* @return string
*/
static function html( $html, $meta, $field )
{
$options = $field['options'];
$terms = get_terms( $options['taxonomy'], $options['args'] );
$field['options'] = self::get_options( $terms );
$html = '';
switch( $options['type'] )
{
case 'checkbox_list':
$html = THE7_RWMB_Checkbox_List_Field::html( $html, $meta, $field );
break;
case 'checkbox_tree':
$elements = self::process_terms( $terms );
$html .= self::walk_checkbox_tree( $meta, $field, $elements, $options['parent'], true );
break;
case 'select_tree':
$elements = self::process_terms( $terms );
$html .= self::walk_select_tree( $meta, $field, $elements, $options['parent'], true );
break;
case 'select_advanced':
$html = THE7_RWMB_Select_Advanced_Field::html( $html, $meta, $field );
break;
case 'select':
default:
$html = THE7_RWMB_Select_Field::html( $html, $meta, $field );
}
return $html;
}
/**
* Walker for displaying checkboxes in tree format
*
* @param $meta
* @param $field
* @param $elements
* @param int $parent
* @param bool $active
*
* @return string
*/
static function walk_checkbox_tree( $meta, $field, $elements, $parent = 0, $active = false )
{
if ( ! isset( $elements[$parent] ) )
return;
$terms = $elements[$parent];
$field['options'] = self::get_options( $terms );
$hidden = $active ? '' : 'hidden';
$html = "<ul class = 'rw-taxonomy-tree {$hidden}'>";
$li = '<li><label><input type="checkbox" name="%s" value="%s"%s> %s</label>';
foreach ( $terms as $term )
{
$html .= sprintf(
$li,
$field['field_name'],
$term->term_id,
checked( in_array( $term->term_id, $meta ), true, false ),
$term->name
);
$html .= self::walk_checkbox_tree( $meta, $field, $elements, $term->term_id, $active && in_array( $term->term_id, $meta ) ) . '</li>';
}
$html .= '</ul>';
return $html;
}
/**
* Walker for displaying select in tree format
*
* @param $meta
* @param $field
* @param $elements
* @param int $parent
* @param bool $active
*
* @return string
*/
static function walk_select_tree( $meta, $field, $elements, $parent = 0, $active = false )
{
if ( ! isset( $elements[$parent] ) )
return;
$terms = $elements[$parent];
$field['options'] = self::get_options( $terms );
$classes = array( 'rw-taxonomy-tree' );
$classes[] = $active ? 'active' : 'disabled';
$classes[] = "the7-mb-taxonomy-{$parent}";
$html = '<div class="' . implode( ' ', $classes ) . '">';
$html .= THE7_RWMB_Select_Field::html( $html, $meta, $field );
foreach ( $terms as $term )
{
$html .= self::walk_select_tree( $meta, $field, $elements, $term->term_id, $active && in_array( $term->term_id, $meta ) );
}
$html .= '</div>';
return $html;
}
/**
* Processes terms into indexed array for walker functions
*
* @param $terms
*
* @internal param $field
* @return array
*/
static function process_terms( $terms )
{
$elements = array();
foreach ( $terms as $term )
{
$elements[$term->parent][] = $term;
}
return $elements;
}
/**
* Get options for selects, checkbox list, etc via the terms
*
* @param $terms array of term objects
*
* @param $options array
*/
static function get_options( $terms = array() )
{
$options = array();
foreach( $terms as $term )
{
$options[$term->term_id] = $term->name;
}
return $options;
}
/**
* Save meta value
*
* @param mixed $new
* @param mixed $old
* @param int $post_id
* @param array $field
*
* @return string
*/
static function save( $new, $old, $post_id, $field )
{
$new = array_unique( array_map( 'intval', (array) $new ) );
$new = empty( $new ) ? null : $new;
wp_set_object_terms( $post_id, $new, $field['options']['taxonomy'] );
}
/**
* Standard meta retrieval
*
* @param mixed $meta
* @param int $post_id
* @param bool $saved
* @param array $field
*
* @return array
*/
static function meta( $meta, $post_id, $saved, $field )
{
$options = $field['options'];
$meta = wp_get_post_terms( $post_id, $options['taxonomy'] );
$meta = is_array( $meta ) ? $meta : (array) $meta;
$meta = wp_list_pluck( $meta, 'term_id' );
return $meta;
}
}
}