Import legacy nurinda.co.id website

wp-content/plugins/mashsharer/includes/admin/meta-box/inc/walkers/select-tree-walker.php

@@ -0,0 +1,75 @@
+<?php
+/**
+ * Select Tree Walker for cascading select fields.
+ * @uses MASHSB_RWMB_Select_Walker
+ */
+class MASHSB_RWMB_Select_Tree_Walker
+{
+	/**
+	 * Field data.
+	 * @var string
+	 */
+	public $field;
+
+	/**
+	 * Field meta value.
+	 * @var array
+	 */
+	public $meta = array();
+
+	function __construct( $db_fields, $field, $meta )
+	{
+		$this->db_fields = wp_parse_args( (array) $db_fields, array(
+			'parent' => '',
+			'id'     => '',
+			'label'  => '',
+		) );
+		$this->field     = $field;
+		$this->meta      = (array) $meta;
+	}
+
+	function walk( $options )
+	{
+		$parent   = $this->db_fields['parent'];
+		$children = array();
+
+		foreach ( $options as $o )
+		{
+			$children[$o->$parent][] = $o;
+		}
+		$top_level = isset( $children[0] ) ? 0 : $options[0]->$parent;
+		return $this->display_level( $children, $top_level, true );
+	}
+
+	function display_level( $options, $parent_id = 0, $active = false )
+	{
+		$id          = $this->db_fields['id'];
+		$field       = $this->field;
+		$meta        = $this->meta;
+		$walker      = new MASHSB_RWMB_Select_Walker( $this->db_fields, $this->field, $this->meta );
+		$field_class = MASHSB_RW_Meta_Box::get_class_name( $field );
+		$attributes  = call_user_func( array( $field_class, 'get_attributes' ), $field, $meta );
+
+		$children = $options[$parent_id];
+		$output   = sprintf(
+			'<div class="mashsb-rwmb-select-tree %s" data-parent-id="%s"><select %s>',
+			$active ? '' : 'hidden',
+			$parent_id,
+			MASHSB_RWMB_Field::render_attributes( $attributes )
+		);
+		$output .= isset( $field['placeholder'] ) ? "<option value=''>{$field['placeholder']}</option>" : '<option></option>';
+		$output .= $walker->walk( $children, - 1 );
+		$output .= '</select>';
+
+		foreach ( $children as $c )
+		{
+			if ( isset( $options[$c->$id] ) )
+			{
+				$output .= $this->display_level( $options, $c->$id, in_array( $c->$id, $meta ) && $active );
+			}
+		}
+
+		$output .= '</div>';
+		return $output;
+	}
+}