1786 lines
54 KiB
PHP
1786 lines
54 KiB
PHP
<?php
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/**
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* API for creating dynamic sidebar without hardcoding functionality into
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* themes. Includes both internal WordPress routines and theme use routines.
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*
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* This functionality was found in a plugin before WordPress 2.2 release which
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* included it in the core from that point on.
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*
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* @link https://codex.wordpress.org/Plugins/WordPress_Widgets WordPress Widgets
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* @link https://codex.wordpress.org/Plugins/WordPress_Widgets_Api Widgets API
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*
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* @package WordPress
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* @subpackage Widgets
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*/
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/**
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* This class must be extended for each widget and WP_Widget::widget(), WP_Widget::update()
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* and WP_Widget::form() need to be over-ridden.
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*
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* @package WordPress
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* @subpackage Widgets
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* @since 2.8.0
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*/
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class WP_Widget {
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/**
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* Root ID for all widgets of this type.
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*
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* @since 2.8.0
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* @access public
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* @var mixed|string
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*/
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public $id_base;
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/**
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* Name for this widget type.
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*
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* @since 2.8.0
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* @access public
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* @var string
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*/
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public $name;
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/**
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* Option array passed to {@see wp_register_sidebar_widget()}.
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*
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* @since 2.8.0
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* @access public
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* @var array
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*/
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public $widget_options;
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/**
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* Option array passed to {@see wp_register_widget_control()}.
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*
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* @since 2.8.0
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* @access public
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* @var array
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*/
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public $control_options;
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/**
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* Unique ID number of the current instance.
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*
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* @since 2.8.0
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* @access public
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* @var bool|int
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*/
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public $number = false;
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/**
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* Unique ID string of the current instance (id_base-number).
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*
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* @since 2.8.0
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* @access public
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* @var bool|string
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*/
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public $id = false;
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/**
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* Whether the widget data has been updated.
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*
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* Set to true when the data is updated after a POST submit - ensures it does
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* not happen twice.
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*
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* @since 2.8.0
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* @access public
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* @var bool
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*/
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public $updated = false;
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// Member functions that you must over-ride.
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/**
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* Echo the widget content.
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*
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* Subclasses should over-ride this function to generate their widget code.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $args Display arguments including before_title, after_title,
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* before_widget, and after_widget.
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* @param array $instance The settings for the particular instance of the widget.
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*/
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public function widget( $args, $instance ) {
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die('function WP_Widget::widget() must be over-ridden in a sub-class.');
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}
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/**
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* Update a particular instance.
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*
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* This function should check that $new_instance is set correctly. The newly-calculated
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* value of `$instance` should be returned. If false is returned, the instance won't be
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* saved/updated.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $new_instance New settings for this instance as input by the user via
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* {@see WP_Widget::form()}.
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* @param array $old_instance Old settings for this instance.
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* @return array Settings to save or bool false to cancel saving.
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*/
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public function update( $new_instance, $old_instance ) {
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return $new_instance;
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}
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/**
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* Output the settings update form.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $instance Current settings.
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* @return string Default return is 'noform'.
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*/
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public function form($instance) {
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echo '<p class="no-options-widget">' . __('There are no options for this widget.') . '</p>';
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return 'noform';
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}
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// Functions you'll need to call.
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/**
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* PHP5 constructor.
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*
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* @since 2.8.0
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* @access public
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*
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* @param string $id_base Optional Base ID for the widget, lowercase and unique. If left empty,
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* a portion of the widget's class name will be used Has to be unique.
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* @param string $name Name for the widget displayed on the configuration page.
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* @param array $widget_options Optional. Widget options. See {@see wp_register_sidebar_widget()} for
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* information on accepted arguments. Default empty array.
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* @param array $control_options Optional. Widget control options. See {@see wp_register_widget_control()}
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* for information on accepted arguments. Default empty array.
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*/
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public function __construct( $id_base, $name, $widget_options = array(), $control_options = array() ) {
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$this->id_base = empty($id_base) ? preg_replace( '/(wp_)?widget_/', '', strtolower(get_class($this)) ) : strtolower($id_base);
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$this->name = $name;
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$this->option_name = 'widget_' . $this->id_base;
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$this->widget_options = wp_parse_args( $widget_options, array('classname' => $this->option_name) );
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$this->control_options = wp_parse_args( $control_options, array('id_base' => $this->id_base) );
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}
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/**
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* PHP4 constructor
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*
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* @param string $id_base
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* @param string $name
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* @param array $widget_options
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* @param array $control_options
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*/
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public function WP_Widget( $id_base, $name, $widget_options = array(), $control_options = array() ) {
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_deprecated_constructor( 'WP_Widget', '4.3.0' );
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WP_Widget::__construct( $id_base, $name, $widget_options, $control_options );
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}
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/**
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* Constructs name attributes for use in form() fields
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*
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* This function should be used in form() methods to create name attributes for fields to be saved by update()
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*
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* @param string $field_name Field name
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* @return string Name attribute for $field_name
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*/
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public function get_field_name($field_name) {
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return 'widget-' . $this->id_base . '[' . $this->number . '][' . $field_name . ']';
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}
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/**
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* Constructs id attributes for use in {@see WP_Widget::form()} fields.
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*
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* This function should be used in form() methods to create id attributes
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* for fields to be saved by {@see WP_Widget::update()}.
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*
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* @since 2.8.0
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* @access public
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*
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* @param string $field_name Field name.
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* @return string ID attribute for `$field_name`.
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*/
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public function get_field_id( $field_name ) {
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return 'widget-' . $this->id_base . '-' . $this->number . '-' . $field_name;
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}
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/**
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* Register all widget instances of this widget class.
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*
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* @since 2.8.0
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* @access private
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*/
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public function _register() {
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$settings = $this->get_settings();
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$empty = true;
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// When $settings is an array-like object, get an intrinsic array for use with array_keys().
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if ( $settings instanceof ArrayObject || $settings instanceof ArrayIterator ) {
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$settings = $settings->getArrayCopy();
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}
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if ( is_array( $settings ) ) {
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foreach ( array_keys( $settings ) as $number ) {
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if ( is_numeric( $number ) ) {
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$this->_set( $number );
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$this->_register_one( $number );
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$empty = false;
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}
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}
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}
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if ( $empty ) {
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// If there are none, we register the widget's existence with a generic template.
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$this->_set( 1 );
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$this->_register_one();
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}
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}
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/**
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* Set the internal order number for the widget instance.
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*
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* @since 2.8.0
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* @access private
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*
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* @param int $number The unique order number of this widget instance compared to other
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* instances of the same class.
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*/
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public function _set($number) {
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$this->number = $number;
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$this->id = $this->id_base . '-' . $number;
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}
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/**
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* @return callback
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*/
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public function _get_display_callback() {
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return array($this, 'display_callback');
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}
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/**
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* @return callback
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*/
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public function _get_update_callback() {
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return array($this, 'update_callback');
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}
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/**
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* @return callback
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*/
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public function _get_form_callback() {
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return array($this, 'form_callback');
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}
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/**
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* Determine whether the current request is inside the Customizer preview.
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*
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* If true -- the current request is inside the Customizer preview, then
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* the object cache gets suspended and widgets should check this to decide
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* whether they should store anything persistently to the object cache,
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* to transients, or anywhere else.
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*
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* @since 3.9.0
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* @access public
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*
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* @global WP_Customize_Manager $wp_customize
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*
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* @return bool True if within the Customizer preview, false if not.
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*/
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public function is_preview() {
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global $wp_customize;
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return ( isset( $wp_customize ) && $wp_customize->is_preview() ) ;
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}
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/**
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* Generate the actual widget content (Do NOT override).
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*
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* Finds the instance and calls {@see WP_Widget::widget()}.
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*
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* @since 2.8.0
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* @access public
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*
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* @param array $args Display arguments. See {@see WP_Widget::widget()} for information
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* on accepted arguments.
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* @param int|array $widget_args {
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* Optional. Internal order number of the widget instance, or array of multi-widget arguments.
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* Default 1.
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*
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* @type int $number Number increment used for multiples of the same widget.
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* }
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*/
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public function display_callback( $args, $widget_args = 1 ) {
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if ( is_numeric( $widget_args ) ) {
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$widget_args = array( 'number' => $widget_args );
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}
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$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
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$this->_set( $widget_args['number'] );
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$instances = $this->get_settings();
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if ( array_key_exists( $this->number, $instances ) ) {
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$instance = $instances[ $this->number ];
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/**
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* Filter the settings for a particular widget instance.
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*
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* Returning false will effectively short-circuit display of the widget.
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*
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* @since 2.8.0
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*
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* @param array $instance The current widget instance's settings.
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* @param WP_Widget $this The current widget instance.
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* @param array $args An array of default widget arguments.
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*/
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$instance = apply_filters( 'widget_display_callback', $instance, $this, $args );
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if ( false === $instance ) {
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return;
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}
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$was_cache_addition_suspended = wp_suspend_cache_addition();
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if ( $this->is_preview() && ! $was_cache_addition_suspended ) {
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wp_suspend_cache_addition( true );
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}
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$this->widget( $args, $instance );
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if ( $this->is_preview() ) {
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wp_suspend_cache_addition( $was_cache_addition_suspended );
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}
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}
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}
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/**
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* Deal with changed settings (Do NOT override).
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*
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* @since 2.8.0
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* @access public
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*
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* @global array $wp_registered_widgets
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*
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* @param int $deprecated Not used.
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*/
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public function update_callback( $deprecated = 1 ) {
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global $wp_registered_widgets;
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$all_instances = $this->get_settings();
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// We need to update the data
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if ( $this->updated )
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return;
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if ( isset($_POST['delete_widget']) && $_POST['delete_widget'] ) {
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// Delete the settings for this instance of the widget
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if ( isset($_POST['the-widget-id']) )
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$del_id = $_POST['the-widget-id'];
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else
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return;
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if ( isset($wp_registered_widgets[$del_id]['params'][0]['number']) ) {
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$number = $wp_registered_widgets[$del_id]['params'][0]['number'];
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if ( $this->id_base . '-' . $number == $del_id )
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unset($all_instances[$number]);
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}
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} else {
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if ( isset($_POST['widget-' . $this->id_base]) && is_array($_POST['widget-' . $this->id_base]) ) {
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$settings = $_POST['widget-' . $this->id_base];
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} elseif ( isset($_POST['id_base']) && $_POST['id_base'] == $this->id_base ) {
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$num = $_POST['multi_number'] ? (int) $_POST['multi_number'] : (int) $_POST['widget_number'];
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$settings = array( $num => array() );
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} else {
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return;
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}
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foreach ( $settings as $number => $new_instance ) {
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$new_instance = stripslashes_deep($new_instance);
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$this->_set($number);
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$old_instance = isset($all_instances[$number]) ? $all_instances[$number] : array();
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$was_cache_addition_suspended = wp_suspend_cache_addition();
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if ( $this->is_preview() && ! $was_cache_addition_suspended ) {
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wp_suspend_cache_addition( true );
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}
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$instance = $this->update( $new_instance, $old_instance );
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if ( $this->is_preview() ) {
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wp_suspend_cache_addition( $was_cache_addition_suspended );
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}
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/**
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* Filter a widget's settings before saving.
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*
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* Returning false will effectively short-circuit the widget's ability
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* to update settings.
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*
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* @since 2.8.0
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*
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* @param array $instance The current widget instance's settings.
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* @param array $new_instance Array of new widget settings.
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* @param array $old_instance Array of old widget settings.
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* @param WP_Widget $this The current widget instance.
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*/
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$instance = apply_filters( 'widget_update_callback', $instance, $new_instance, $old_instance, $this );
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if ( false !== $instance ) {
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$all_instances[$number] = $instance;
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}
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break; // run only once
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}
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}
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$this->save_settings($all_instances);
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$this->updated = true;
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}
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/**
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* Generate the widget control form (Do NOT override).
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*
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* @since 2.8.0
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* @access public
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*
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* @param int|array $widget_args Widget instance number or array of widget arguments.
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* @return string|null
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*/
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public function form_callback( $widget_args = 1 ) {
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if ( is_numeric($widget_args) )
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$widget_args = array( 'number' => $widget_args );
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$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
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$all_instances = $this->get_settings();
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if ( -1 == $widget_args['number'] ) {
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// We echo out a form where 'number' can be set later
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$this->_set('__i__');
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$instance = array();
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} else {
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$this->_set($widget_args['number']);
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$instance = $all_instances[ $widget_args['number'] ];
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}
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/**
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* Filter the widget instance's settings before displaying the control form.
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*
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* Returning false effectively short-circuits display of the control form.
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*
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* @since 2.8.0
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*
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* @param array $instance The current widget instance's settings.
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* @param WP_Widget $this The current widget instance.
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*/
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$instance = apply_filters( 'widget_form_callback', $instance, $this );
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$return = null;
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if ( false !== $instance ) {
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$return = $this->form($instance);
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/**
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* Fires at the end of the widget control form.
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*
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* Use this hook to add extra fields to the widget form. The hook
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* is only fired if the value passed to the 'widget_form_callback'
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* hook is not false.
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*
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* Note: If the widget has no form, the text echoed from the default
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* form method can be hidden using CSS.
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*
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* @since 2.8.0
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*
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* @param WP_Widget $this The widget instance, passed by reference.
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* @param null $return Return null if new fields are added.
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* @param array $instance An array of the widget's settings.
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*/
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do_action_ref_array( 'in_widget_form', array( &$this, &$return, $instance ) );
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}
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return $return;
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}
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/**
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* Register an instance of the widget class.
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*
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* @since 2.8.0
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* @access private
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*
|
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* @param integer $number Optional. The unique order number of this widget instance
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* compared to other instances of the same class. Default -1.
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*/
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public function _register_one( $number = -1 ) {
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wp_register_sidebar_widget( $this->id, $this->name, $this->_get_display_callback(), $this->widget_options, array( 'number' => $number ) );
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_register_widget_update_callback( $this->id_base, $this->_get_update_callback(), $this->control_options, array( 'number' => -1 ) );
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_register_widget_form_callback( $this->id, $this->name, $this->_get_form_callback(), $this->control_options, array( 'number' => $number ) );
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}
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|
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/**
|
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* Save the settings for all instances of the widget class.
|
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*
|
|
* @since 2.8.0
|
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* @access public
|
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*
|
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* @param array $settings Multi-dimensional array of widget instance settings.
|
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*/
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public function save_settings( $settings ) {
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$settings['_multiwidget'] = 1;
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update_option( $this->option_name, $settings );
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}
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|
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/**
|
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* Get the settings for all instances of the widget class.
|
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*
|
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* @since 2.8.0
|
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* @access public
|
|
*
|
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* @return array Multi-dimensional array of widget instance settings.
|
|
*/
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public function get_settings() {
|
|
|
|
$settings = get_option( $this->option_name );
|
|
|
|
if ( false === $settings && isset( $this->alt_option_name ) ) {
|
|
$settings = get_option( $this->alt_option_name );
|
|
}
|
|
|
|
if ( ! is_array( $settings ) && ! ( $settings instanceof ArrayObject || $settings instanceof ArrayIterator ) ) {
|
|
$settings = array();
|
|
}
|
|
|
|
if ( ! empty( $settings ) && ! isset( $settings['_multiwidget'] ) ) {
|
|
// Old format, convert if single widget.
|
|
$settings = wp_convert_widget_settings( $this->id_base, $this->option_name, $settings );
|
|
}
|
|
|
|
unset( $settings['_multiwidget'], $settings['__i__'] );
|
|
return $settings;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Singleton that registers and instantiates WP_Widget classes.
|
|
*
|
|
* @package WordPress
|
|
* @subpackage Widgets
|
|
* @since 2.8.0
|
|
*/
|
|
class WP_Widget_Factory {
|
|
public $widgets = array();
|
|
|
|
/**
|
|
* PHP5 constructor.
|
|
*/
|
|
public function __construct() {
|
|
add_action( 'widgets_init', array( $this, '_register_widgets' ), 100 );
|
|
}
|
|
|
|
/**
|
|
* PHP4 constructor.
|
|
*/
|
|
public function WP_Widget_Factory() {
|
|
_deprecated_constructor( 'WP_Widget_Factory', '4.2.0' );
|
|
self::__construct();
|
|
}
|
|
|
|
/**
|
|
* Register a widget subclass.
|
|
*
|
|
* @since 2.8.0
|
|
* @access public
|
|
*
|
|
* @param string $widget_class The name of a {@see WP_Widget} subclass.
|
|
*/
|
|
public function register( $widget_class ) {
|
|
$this->widgets[$widget_class] = new $widget_class();
|
|
}
|
|
|
|
/**
|
|
* Un-register a widget subclass.
|
|
*
|
|
* @since 2.8.0
|
|
* @access public
|
|
*
|
|
* @param string $widget_class The name of a {@see WP_Widget} subclass.
|
|
*/
|
|
public function unregister( $widget_class ) {
|
|
unset( $this->widgets[ $widget_class ] );
|
|
}
|
|
|
|
/**
|
|
* Utility method for adding widgets to the registered widgets global.
|
|
*
|
|
* @since 2.8.0
|
|
* @access public
|
|
*
|
|
* @global array $wp_registered_widgets
|
|
*/
|
|
public function _register_widgets() {
|
|
global $wp_registered_widgets;
|
|
$keys = array_keys($this->widgets);
|
|
$registered = array_keys($wp_registered_widgets);
|
|
$registered = array_map('_get_widget_id_base', $registered);
|
|
|
|
foreach ( $keys as $key ) {
|
|
// don't register new widget if old widget with the same id is already registered
|
|
if ( in_array($this->widgets[$key]->id_base, $registered, true) ) {
|
|
unset($this->widgets[$key]);
|
|
continue;
|
|
}
|
|
|
|
$this->widgets[$key]->_register();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Global Variables */
|
|
|
|
/** @ignore */
|
|
global $wp_registered_sidebars, $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates;
|
|
|
|
/**
|
|
* Stores the sidebars, since many themes can have more than one.
|
|
*
|
|
* @global array $wp_registered_sidebars
|
|
* @since 2.2.0
|
|
*/
|
|
$wp_registered_sidebars = array();
|
|
|
|
/**
|
|
* Stores the registered widgets.
|
|
*
|
|
* @global array $wp_registered_widgets
|
|
* @since 2.2.0
|
|
*/
|
|
$wp_registered_widgets = array();
|
|
|
|
/**
|
|
* Stores the registered widget control (options).
|
|
*
|
|
* @global array $wp_registered_widget_controls
|
|
* @since 2.2.0
|
|
*/
|
|
$wp_registered_widget_controls = array();
|
|
/**
|
|
* @global array $wp_registered_widget_updates
|
|
*/
|
|
$wp_registered_widget_updates = array();
|
|
|
|
/**
|
|
* Private
|
|
*
|
|
* @global array $_wp_sidebars_widgets
|
|
*/
|
|
$_wp_sidebars_widgets = array();
|
|
|
|
/**
|
|
* Private
|
|
*
|
|
* @global array $_wp_deprecated_widgets_callbacks
|
|
*/
|
|
$GLOBALS['_wp_deprecated_widgets_callbacks'] = array(
|
|
'wp_widget_pages',
|
|
'wp_widget_pages_control',
|
|
'wp_widget_calendar',
|
|
'wp_widget_calendar_control',
|
|
'wp_widget_archives',
|
|
'wp_widget_archives_control',
|
|
'wp_widget_links',
|
|
'wp_widget_meta',
|
|
'wp_widget_meta_control',
|
|
'wp_widget_search',
|
|
'wp_widget_recent_entries',
|
|
'wp_widget_recent_entries_control',
|
|
'wp_widget_tag_cloud',
|
|
'wp_widget_tag_cloud_control',
|
|
'wp_widget_categories',
|
|
'wp_widget_categories_control',
|
|
'wp_widget_text',
|
|
'wp_widget_text_control',
|
|
'wp_widget_rss',
|
|
'wp_widget_rss_control',
|
|
'wp_widget_recent_comments',
|
|
'wp_widget_recent_comments_control'
|
|
);
|
|
|
|
/* Template tags & API functions */
|
|
|
|
/**
|
|
* Register a widget
|
|
*
|
|
* Registers a WP_Widget widget
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @see WP_Widget
|
|
*
|
|
* @global WP_Widget_Factory $wp_widget_factory
|
|
*
|
|
* @param string $widget_class The name of a class that extends WP_Widget
|
|
*/
|
|
function register_widget($widget_class) {
|
|
global $wp_widget_factory;
|
|
|
|
$wp_widget_factory->register($widget_class);
|
|
}
|
|
|
|
/**
|
|
* Unregister a widget
|
|
*
|
|
* Unregisters a WP_Widget widget. Useful for unregistering default widgets.
|
|
* Run within a function hooked to the widgets_init action.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @see WP_Widget
|
|
*
|
|
* @global WP_Widget_Factory $wp_widget_factory
|
|
*
|
|
* @param string $widget_class The name of a class that extends WP_Widget
|
|
*/
|
|
function unregister_widget($widget_class) {
|
|
global $wp_widget_factory;
|
|
|
|
$wp_widget_factory->unregister($widget_class);
|
|
}
|
|
|
|
/**
|
|
* Creates multiple sidebars.
|
|
*
|
|
* If you wanted to quickly create multiple sidebars for a theme or internally.
|
|
* This function will allow you to do so. If you don't pass the 'name' and/or
|
|
* 'id' in `$args`, then they will be built for you.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @see register_sidebar() The second parameter is documented by register_sidebar() and is the same here.
|
|
*
|
|
* @global array $wp_registered_sidebars
|
|
*
|
|
* @param int $number Optional. Number of sidebars to create. Default 1.
|
|
* @param array|string $args {
|
|
* Optional. Array or string of arguments for building a sidebar.
|
|
*
|
|
* @type string $id The base string of the unique identifier for each sidebar. If provided, and multiple
|
|
* sidebars are being defined, the id will have "-2" appended, and so on.
|
|
* Default 'sidebar-' followed by the number the sidebar creation is currently at.
|
|
* @type string $name The name or title for the sidebars displayed in the admin dashboard. If registering
|
|
* more than one sidebar, include '%d' in the string as a placeholder for the uniquely
|
|
* assigned number for each sidebar.
|
|
* Default 'Sidebar' for the first sidebar, otherwise 'Sidebar %d'.
|
|
* }
|
|
*/
|
|
function register_sidebars( $number = 1, $args = array() ) {
|
|
global $wp_registered_sidebars;
|
|
$number = (int) $number;
|
|
|
|
if ( is_string($args) )
|
|
parse_str($args, $args);
|
|
|
|
for ( $i = 1; $i <= $number; $i++ ) {
|
|
$_args = $args;
|
|
|
|
if ( $number > 1 )
|
|
$_args['name'] = isset($args['name']) ? sprintf($args['name'], $i) : sprintf(__('Sidebar %d'), $i);
|
|
else
|
|
$_args['name'] = isset($args['name']) ? $args['name'] : __('Sidebar');
|
|
|
|
// Custom specified ID's are suffixed if they exist already.
|
|
// Automatically generated sidebar names need to be suffixed regardless starting at -0
|
|
if ( isset($args['id']) ) {
|
|
$_args['id'] = $args['id'];
|
|
$n = 2; // Start at -2 for conflicting custom ID's
|
|
while ( isset($wp_registered_sidebars[$_args['id']]) )
|
|
$_args['id'] = $args['id'] . '-' . $n++;
|
|
} else {
|
|
$n = count($wp_registered_sidebars);
|
|
do {
|
|
$_args['id'] = 'sidebar-' . ++$n;
|
|
} while ( isset($wp_registered_sidebars[$_args['id']]) );
|
|
}
|
|
register_sidebar($_args);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Builds the definition for a single sidebar and returns the ID.
|
|
*
|
|
* Accepts either a string or an array and then parses that against a set
|
|
* of default arguments for the new sidebar. WordPress will automatically
|
|
* generate a sidebar ID and name based on the current number of registered
|
|
* sidebars if those arguments are not included.
|
|
*
|
|
* When allowing for automatic generation of the name and ID parameters, keep
|
|
* in mind that the incrementor for your sidebar can change over time depending
|
|
* on what other plugins and themes are installed.
|
|
*
|
|
* If theme support for 'widgets' has not yet been added when this function is
|
|
* called, it will be automatically enabled through the use of add_theme_support()
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @global array $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
|
|
*
|
|
* @param array|string $args {
|
|
* Optional. Array or string of arguments for the sidebar being registered.
|
|
*
|
|
* @type string $name The name or title of the sidebar displayed in the Widgets
|
|
* interface. Default 'Sidebar $instance'.
|
|
* @type string $id The unique identifier by which the sidebar will be called.
|
|
* Default 'sidebar-$instance'.
|
|
* @type string $description Description of the sidebar, displayed in the Widgets interface.
|
|
* Default empty string.
|
|
* @type string $class Extra CSS class to assign to the sidebar in the Widgets interface.
|
|
* Default empty.
|
|
* @type string $before_widget HTML content to prepend to each widget's HTML output when
|
|
* assigned to this sidebar. Default is an opening list item element.
|
|
* @type string $after_widget HTML content to append to each widget's HTML output when
|
|
* assigned to this sidebar. Default is a closing list item element.
|
|
* @type string $before_title HTML content to prepend to the sidebar title when displayed.
|
|
* Default is an opening h2 element.
|
|
* @type string $after_title HTML content to append to the sidebar title when displayed.
|
|
* Default is a closing h2 element.
|
|
* }
|
|
* @return string Sidebar ID added to $wp_registered_sidebars global.
|
|
*/
|
|
function register_sidebar($args = array()) {
|
|
global $wp_registered_sidebars;
|
|
|
|
$i = count($wp_registered_sidebars) + 1;
|
|
|
|
$id_is_empty = empty( $args['id'] );
|
|
|
|
$defaults = array(
|
|
'name' => sprintf(__('Sidebar %d'), $i ),
|
|
'id' => "sidebar-$i",
|
|
'description' => '',
|
|
'class' => '',
|
|
'before_widget' => '<li id="%1$s" class="widget %2$s">',
|
|
'after_widget' => "</li>\n",
|
|
'before_title' => '<h2 class="widgettitle">',
|
|
'after_title' => "</h2>\n",
|
|
);
|
|
|
|
$sidebar = wp_parse_args( $args, $defaults );
|
|
|
|
if ( $id_is_empty ) {
|
|
/* translators: 1: the id argument, 2: sidebar name, 3: recommended id value */
|
|
_doing_it_wrong( __FUNCTION__, sprintf( __( 'No %1$s was set in the arguments array for the "%2$s" sidebar. Defaulting to "%3$s". Manually set the %1$s to "%3$s" to silence this notice and keep existing sidebar content.' ), '<code>id</code>', $sidebar['name'], $sidebar['id'] ), '4.2.0' );
|
|
}
|
|
|
|
$wp_registered_sidebars[$sidebar['id']] = $sidebar;
|
|
|
|
add_theme_support('widgets');
|
|
|
|
/**
|
|
* Fires once a sidebar has been registered.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @param array $sidebar Parsed arguments for the registered sidebar.
|
|
*/
|
|
do_action( 'register_sidebar', $sidebar );
|
|
|
|
return $sidebar['id'];
|
|
}
|
|
|
|
/**
|
|
* Removes a sidebar from the list.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @global array $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
|
|
*
|
|
* @param string $name The ID of the sidebar when it was added.
|
|
*/
|
|
function unregister_sidebar( $name ) {
|
|
global $wp_registered_sidebars;
|
|
|
|
unset( $wp_registered_sidebars[ $name ] );
|
|
}
|
|
|
|
/**
|
|
* Register an instance of a widget.
|
|
*
|
|
* The default widget option is 'classname' that can be overridden.
|
|
*
|
|
* The function can also be used to un-register widgets when `$output_callback`
|
|
* parameter is an empty string.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @global array $wp_registered_widgets Uses stored registered widgets.
|
|
* @global array $wp_register_widget_defaults Retrieves widget defaults.
|
|
* @global array $wp_registered_widget_updates
|
|
* @global array $_wp_deprecated_widgets_callbacks
|
|
*
|
|
* @param int|string $id Widget ID.
|
|
* @param string $name Widget display title.
|
|
* @param callback $output_callback Run when widget is called.
|
|
* @param array $options {
|
|
* Optional. An array of supplementary widget options for the instance.
|
|
*
|
|
* @type string $classname Class name for the widget's HTML container. Default is a shortened
|
|
* version of the output callback name.
|
|
* @type string $description Widget description for display in the widget administration
|
|
* panel and/or theme.
|
|
* }
|
|
*/
|
|
function wp_register_sidebar_widget( $id, $name, $output_callback, $options = array() ) {
|
|
global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates, $_wp_deprecated_widgets_callbacks;
|
|
|
|
$id = strtolower($id);
|
|
|
|
if ( empty($output_callback) ) {
|
|
unset($wp_registered_widgets[$id]);
|
|
return;
|
|
}
|
|
|
|
$id_base = _get_widget_id_base($id);
|
|
if ( in_array($output_callback, $_wp_deprecated_widgets_callbacks, true) && !is_callable($output_callback) ) {
|
|
unset( $wp_registered_widget_controls[ $id ] );
|
|
unset( $wp_registered_widget_updates[ $id_base ] );
|
|
return;
|
|
}
|
|
|
|
$defaults = array('classname' => $output_callback);
|
|
$options = wp_parse_args($options, $defaults);
|
|
$widget = array(
|
|
'name' => $name,
|
|
'id' => $id,
|
|
'callback' => $output_callback,
|
|
'params' => array_slice(func_get_args(), 4)
|
|
);
|
|
$widget = array_merge($widget, $options);
|
|
|
|
if ( is_callable($output_callback) && ( !isset($wp_registered_widgets[$id]) || did_action( 'widgets_init' ) ) ) {
|
|
|
|
/**
|
|
* Fires once for each registered widget.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @param array $widget An array of default widget arguments.
|
|
*/
|
|
do_action( 'wp_register_sidebar_widget', $widget );
|
|
$wp_registered_widgets[$id] = $widget;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Retrieve description for widget.
|
|
*
|
|
* When registering widgets, the options can also include 'description' that
|
|
* describes the widget for display on the widget administration panel or
|
|
* in the theme.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @global array $wp_registered_widgets
|
|
*
|
|
* @param int|string $id Widget ID.
|
|
* @return string|void Widget description, if available.
|
|
*/
|
|
function wp_widget_description( $id ) {
|
|
if ( !is_scalar($id) )
|
|
return;
|
|
|
|
global $wp_registered_widgets;
|
|
|
|
if ( isset($wp_registered_widgets[$id]['description']) )
|
|
return esc_html( $wp_registered_widgets[$id]['description'] );
|
|
}
|
|
|
|
/**
|
|
* Retrieve description for a sidebar.
|
|
*
|
|
* When registering sidebars a 'description' parameter can be included that
|
|
* describes the sidebar for display on the widget administration panel.
|
|
*
|
|
* @since 2.9.0
|
|
*
|
|
* @global array $wp_registered_sidebars
|
|
*
|
|
* @param string $id sidebar ID.
|
|
* @return string|void Sidebar description, if available.
|
|
*/
|
|
function wp_sidebar_description( $id ) {
|
|
if ( !is_scalar($id) )
|
|
return;
|
|
|
|
global $wp_registered_sidebars;
|
|
|
|
if ( isset($wp_registered_sidebars[$id]['description']) )
|
|
return esc_html( $wp_registered_sidebars[$id]['description'] );
|
|
}
|
|
|
|
/**
|
|
* Remove widget from sidebar.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @param int|string $id Widget ID.
|
|
*/
|
|
function wp_unregister_sidebar_widget($id) {
|
|
|
|
/**
|
|
* Fires just before a widget is removed from a sidebar.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @param int $id The widget ID.
|
|
*/
|
|
do_action( 'wp_unregister_sidebar_widget', $id );
|
|
|
|
wp_register_sidebar_widget($id, '', '');
|
|
wp_unregister_widget_control($id);
|
|
}
|
|
|
|
/**
|
|
* Registers widget control callback for customizing options.
|
|
*
|
|
* The options contains the 'height', 'width', and 'id_base' keys. The 'height'
|
|
* option is never used. The 'width' option is the width of the fully expanded
|
|
* control form, but try hard to use the default width. The 'id_base' is for
|
|
* multi-widgets (widgets which allow multiple instances such as the text
|
|
* widget), an id_base must be provided. The widget id will end up looking like
|
|
* `{$id_base}-{$unique_number}`.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @todo Document `$options` as a hash notation, re: WP_Widget::__construct() cross-reference.
|
|
* @todo `$params` parameter?
|
|
*
|
|
* @global array $wp_registered_widget_controls
|
|
* @global array $wp_registered_widget_updates
|
|
* @global array $wp_registered_widgets
|
|
* @global array $_wp_deprecated_widgets_callbacks
|
|
*
|
|
* @param int|string $id Sidebar ID.
|
|
* @param string $name Sidebar display name.
|
|
* @param callback $control_callback Run when sidebar is displayed.
|
|
* @param array|string $options Optional. Widget options. See description above. Default empty array.
|
|
*/
|
|
function wp_register_widget_control( $id, $name, $control_callback, $options = array() ) {
|
|
global $wp_registered_widget_controls, $wp_registered_widget_updates, $wp_registered_widgets, $_wp_deprecated_widgets_callbacks;
|
|
|
|
$id = strtolower($id);
|
|
$id_base = _get_widget_id_base($id);
|
|
|
|
if ( empty($control_callback) ) {
|
|
unset($wp_registered_widget_controls[$id]);
|
|
unset($wp_registered_widget_updates[$id_base]);
|
|
return;
|
|
}
|
|
|
|
if ( in_array($control_callback, $_wp_deprecated_widgets_callbacks, true) && !is_callable($control_callback) ) {
|
|
unset( $wp_registered_widgets[ $id ] );
|
|
return;
|
|
}
|
|
|
|
if ( isset($wp_registered_widget_controls[$id]) && !did_action( 'widgets_init' ) )
|
|
return;
|
|
|
|
$defaults = array('width' => 250, 'height' => 200 ); // height is never used
|
|
$options = wp_parse_args($options, $defaults);
|
|
$options['width'] = (int) $options['width'];
|
|
$options['height'] = (int) $options['height'];
|
|
|
|
$widget = array(
|
|
'name' => $name,
|
|
'id' => $id,
|
|
'callback' => $control_callback,
|
|
'params' => array_slice(func_get_args(), 4)
|
|
);
|
|
$widget = array_merge($widget, $options);
|
|
|
|
$wp_registered_widget_controls[$id] = $widget;
|
|
|
|
if ( isset($wp_registered_widget_updates[$id_base]) )
|
|
return;
|
|
|
|
if ( isset($widget['params'][0]['number']) )
|
|
$widget['params'][0]['number'] = -1;
|
|
|
|
unset($widget['width'], $widget['height'], $widget['name'], $widget['id']);
|
|
$wp_registered_widget_updates[$id_base] = $widget;
|
|
}
|
|
|
|
/**
|
|
* @global array $wp_registered_widget_updates
|
|
*
|
|
* @param string $id_base
|
|
* @param callable $update_callback
|
|
* @param array $options
|
|
*/
|
|
function _register_widget_update_callback($id_base, $update_callback, $options = array()) {
|
|
global $wp_registered_widget_updates;
|
|
|
|
if ( isset($wp_registered_widget_updates[$id_base]) ) {
|
|
if ( empty($update_callback) )
|
|
unset($wp_registered_widget_updates[$id_base]);
|
|
return;
|
|
}
|
|
|
|
$widget = array(
|
|
'callback' => $update_callback,
|
|
'params' => array_slice(func_get_args(), 3)
|
|
);
|
|
|
|
$widget = array_merge($widget, $options);
|
|
$wp_registered_widget_updates[$id_base] = $widget;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @global array $wp_registered_widget_controls
|
|
*
|
|
* @param int|string $id
|
|
* @param string $name
|
|
* @param callable $form_callback
|
|
* @param array $options
|
|
*/
|
|
function _register_widget_form_callback($id, $name, $form_callback, $options = array()) {
|
|
global $wp_registered_widget_controls;
|
|
|
|
$id = strtolower($id);
|
|
|
|
if ( empty($form_callback) ) {
|
|
unset($wp_registered_widget_controls[$id]);
|
|
return;
|
|
}
|
|
|
|
if ( isset($wp_registered_widget_controls[$id]) && !did_action( 'widgets_init' ) )
|
|
return;
|
|
|
|
$defaults = array('width' => 250, 'height' => 200 );
|
|
$options = wp_parse_args($options, $defaults);
|
|
$options['width'] = (int) $options['width'];
|
|
$options['height'] = (int) $options['height'];
|
|
|
|
$widget = array(
|
|
'name' => $name,
|
|
'id' => $id,
|
|
'callback' => $form_callback,
|
|
'params' => array_slice(func_get_args(), 4)
|
|
);
|
|
$widget = array_merge($widget, $options);
|
|
|
|
$wp_registered_widget_controls[$id] = $widget;
|
|
}
|
|
|
|
/**
|
|
* Remove control callback for widget.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @param int|string $id Widget ID.
|
|
*/
|
|
function wp_unregister_widget_control($id) {
|
|
wp_register_widget_control( $id, '', '' );
|
|
}
|
|
|
|
/**
|
|
* Display dynamic sidebar.
|
|
*
|
|
* By default this displays the default sidebar or 'sidebar-1'. If your theme specifies the 'id' or
|
|
* 'name' parameter for its registered sidebars you can pass an id or name as the $index parameter.
|
|
* Otherwise, you can pass in a numerical index to display the sidebar at that index.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @global array $wp_registered_sidebars
|
|
* @global array $wp_registered_widgets
|
|
*
|
|
* @param int|string $index Optional, default is 1. Index, name or ID of dynamic sidebar.
|
|
* @return bool True, if widget sidebar was found and called. False if not found or not called.
|
|
*/
|
|
function dynamic_sidebar($index = 1) {
|
|
global $wp_registered_sidebars, $wp_registered_widgets;
|
|
|
|
if ( is_int($index) ) {
|
|
$index = "sidebar-$index";
|
|
} else {
|
|
$index = sanitize_title($index);
|
|
foreach ( (array) $wp_registered_sidebars as $key => $value ) {
|
|
if ( sanitize_title($value['name']) == $index ) {
|
|
$index = $key;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
$sidebars_widgets = wp_get_sidebars_widgets();
|
|
if ( empty( $wp_registered_sidebars[ $index ] ) || empty( $sidebars_widgets[ $index ] ) || ! is_array( $sidebars_widgets[ $index ] ) ) {
|
|
/** This action is documented in wp-includes/widgets.php */
|
|
do_action( 'dynamic_sidebar_before', $index, false );
|
|
/** This action is documented in wp-includes/widgets.php */
|
|
do_action( 'dynamic_sidebar_after', $index, false );
|
|
/** This filter is documented in wp-includes/widgets.php */
|
|
return apply_filters( 'dynamic_sidebar_has_widgets', false, $index );
|
|
}
|
|
|
|
/**
|
|
* Fires before widgets are rendered in a dynamic sidebar.
|
|
*
|
|
* Note: The action also fires for empty sidebars, and on both the front-end
|
|
* and back-end, including the Inactive Widgets sidebar on the Widgets screen.
|
|
*
|
|
* @since 3.9.0
|
|
*
|
|
* @param int|string $index Index, name, or ID of the dynamic sidebar.
|
|
* @param bool $has_widgets Whether the sidebar is populated with widgets.
|
|
* Default true.
|
|
*/
|
|
do_action( 'dynamic_sidebar_before', $index, true );
|
|
$sidebar = $wp_registered_sidebars[$index];
|
|
|
|
$did_one = false;
|
|
foreach ( (array) $sidebars_widgets[$index] as $id ) {
|
|
|
|
if ( !isset($wp_registered_widgets[$id]) ) continue;
|
|
|
|
$params = array_merge(
|
|
array( array_merge( $sidebar, array('widget_id' => $id, 'widget_name' => $wp_registered_widgets[$id]['name']) ) ),
|
|
(array) $wp_registered_widgets[$id]['params']
|
|
);
|
|
|
|
// Substitute HTML id and class attributes into before_widget
|
|
$classname_ = '';
|
|
foreach ( (array) $wp_registered_widgets[$id]['classname'] as $cn ) {
|
|
if ( is_string($cn) )
|
|
$classname_ .= '_' . $cn;
|
|
elseif ( is_object($cn) )
|
|
$classname_ .= '_' . get_class($cn);
|
|
}
|
|
$classname_ = ltrim($classname_, '_');
|
|
$params[0]['before_widget'] = sprintf($params[0]['before_widget'], $id, $classname_);
|
|
|
|
/**
|
|
* Filter the parameters passed to a widget's display callback.
|
|
*
|
|
* Note: The filter is evaluated on both the front-end and back-end,
|
|
* including for the Inactive Widgets sidebar on the Widgets screen.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @see register_sidebar()
|
|
*
|
|
* @param array $params {
|
|
* @type array $args {
|
|
* An array of widget display arguments.
|
|
*
|
|
* @type string $name Name of the sidebar the widget is assigned to.
|
|
* @type string $id ID of the sidebar the widget is assigned to.
|
|
* @type string $description The sidebar description.
|
|
* @type string $class CSS class applied to the sidebar container.
|
|
* @type string $before_widget HTML markup to prepend to each widget in the sidebar.
|
|
* @type string $after_widget HTML markup to append to each widget in the sidebar.
|
|
* @type string $before_title HTML markup to prepend to the widget title when displayed.
|
|
* @type string $after_title HTML markup to append to the widget title when displayed.
|
|
* @type string $widget_id ID of the widget.
|
|
* @type string $widget_name Name of the widget.
|
|
* }
|
|
* @type array $widget_args {
|
|
* An array of multi-widget arguments.
|
|
*
|
|
* @type int $number Number increment used for multiples of the same widget.
|
|
* }
|
|
* }
|
|
*/
|
|
$params = apply_filters( 'dynamic_sidebar_params', $params );
|
|
|
|
$callback = $wp_registered_widgets[$id]['callback'];
|
|
|
|
/**
|
|
* Fires before a widget's display callback is called.
|
|
*
|
|
* Note: The action fires on both the front-end and back-end, including
|
|
* for widgets in the Inactive Widgets sidebar on the Widgets screen.
|
|
*
|
|
* The action is not fired for empty sidebars.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @param array $widget_id {
|
|
* An associative array of widget arguments.
|
|
*
|
|
* @type string $name Name of the widget.
|
|
* @type string $id Widget ID.
|
|
* @type array|callback $callback When the hook is fired on the front-end, $callback is an array
|
|
* containing the widget object. Fired on the back-end, $callback
|
|
* is 'wp_widget_control', see $_callback.
|
|
* @type array $params An associative array of multi-widget arguments.
|
|
* @type string $classname CSS class applied to the widget container.
|
|
* @type string $description The widget description.
|
|
* @type array $_callback When the hook is fired on the back-end, $_callback is populated
|
|
* with an array containing the widget object, see $callback.
|
|
* }
|
|
*/
|
|
do_action( 'dynamic_sidebar', $wp_registered_widgets[ $id ] );
|
|
|
|
if ( is_callable($callback) ) {
|
|
call_user_func_array($callback, $params);
|
|
$did_one = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Fires after widgets are rendered in a dynamic sidebar.
|
|
*
|
|
* Note: The action also fires for empty sidebars, and on both the front-end
|
|
* and back-end, including the Inactive Widgets sidebar on the Widgets screen.
|
|
*
|
|
* @since 3.9.0
|
|
*
|
|
* @param int|string $index Index, name, or ID of the dynamic sidebar.
|
|
* @param bool $has_widgets Whether the sidebar is populated with widgets.
|
|
* Default true.
|
|
*/
|
|
do_action( 'dynamic_sidebar_after', $index, true );
|
|
|
|
/**
|
|
* Filter whether a sidebar has widgets.
|
|
*
|
|
* Note: The filter is also evaluated for empty sidebars, and on both the front-end
|
|
* and back-end, including the Inactive Widgets sidebar on the Widgets screen.
|
|
*
|
|
* @since 3.9.0
|
|
*
|
|
* @param bool $did_one Whether at least one widget was rendered in the sidebar.
|
|
* Default false.
|
|
* @param int|string $index Index, name, or ID of the dynamic sidebar.
|
|
*/
|
|
return apply_filters( 'dynamic_sidebar_has_widgets', $did_one, $index );
|
|
}
|
|
|
|
/**
|
|
* Whether widget is displayed on the front-end.
|
|
*
|
|
* Either $callback or $id_base can be used
|
|
* $id_base is the first argument when extending WP_Widget class
|
|
* Without the optional $widget_id parameter, returns the ID of the first sidebar
|
|
* in which the first instance of the widget with the given callback or $id_base is found.
|
|
* With the $widget_id parameter, returns the ID of the sidebar where
|
|
* the widget with that callback/$id_base AND that ID is found.
|
|
*
|
|
* NOTE: $widget_id and $id_base are the same for single widgets. To be effective
|
|
* this function has to run after widgets have initialized, at action 'init' or later.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @global array $wp_registered_widgets
|
|
*
|
|
* @param string $callback Optional, Widget callback to check.
|
|
* @param int $widget_id Optional, but needed for checking. Widget ID.
|
|
* @param string $id_base Optional, the base ID of a widget created by extending WP_Widget.
|
|
* @param bool $skip_inactive Optional, whether to check in 'wp_inactive_widgets'.
|
|
* @return string|false False if widget is not active or id of sidebar in which the widget is active.
|
|
*/
|
|
function is_active_widget($callback = false, $widget_id = false, $id_base = false, $skip_inactive = true) {
|
|
global $wp_registered_widgets;
|
|
|
|
$sidebars_widgets = wp_get_sidebars_widgets();
|
|
|
|
if ( is_array($sidebars_widgets) ) {
|
|
foreach ( $sidebars_widgets as $sidebar => $widgets ) {
|
|
if ( $skip_inactive && ( 'wp_inactive_widgets' === $sidebar || 'orphaned_widgets' === substr( $sidebar, 0, 16 ) ) ) {
|
|
continue;
|
|
}
|
|
|
|
if ( is_array($widgets) ) {
|
|
foreach ( $widgets as $widget ) {
|
|
if ( ( $callback && isset($wp_registered_widgets[$widget]['callback']) && $wp_registered_widgets[$widget]['callback'] == $callback ) || ( $id_base && _get_widget_id_base($widget) == $id_base ) ) {
|
|
if ( !$widget_id || $widget_id == $wp_registered_widgets[$widget]['id'] )
|
|
return $sidebar;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Whether the dynamic sidebar is enabled and used by theme.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @global array $wp_registered_widgets
|
|
* @global array $wp_registered_sidebars
|
|
*
|
|
* @return bool True, if using widgets. False, if not using widgets.
|
|
*/
|
|
function is_dynamic_sidebar() {
|
|
global $wp_registered_widgets, $wp_registered_sidebars;
|
|
$sidebars_widgets = get_option('sidebars_widgets');
|
|
foreach ( (array) $wp_registered_sidebars as $index => $sidebar ) {
|
|
if ( count($sidebars_widgets[$index]) ) {
|
|
foreach ( (array) $sidebars_widgets[$index] as $widget )
|
|
if ( array_key_exists($widget, $wp_registered_widgets) )
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Whether a sidebar is in use.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param string|int $index Sidebar name, id or number to check.
|
|
* @return bool true if the sidebar is in use, false otherwise.
|
|
*/
|
|
function is_active_sidebar( $index ) {
|
|
$index = ( is_int($index) ) ? "sidebar-$index" : sanitize_title($index);
|
|
$sidebars_widgets = wp_get_sidebars_widgets();
|
|
$is_active_sidebar = ! empty( $sidebars_widgets[$index] );
|
|
|
|
/**
|
|
* Filter whether a dynamic sidebar is considered "active".
|
|
*
|
|
* @since 3.9.0
|
|
*
|
|
* @param bool $is_active_sidebar Whether or not the sidebar should be considered "active".
|
|
* In other words, whether the sidebar contains any widgets.
|
|
* @param int|string $index Index, name, or ID of the dynamic sidebar.
|
|
*/
|
|
return apply_filters( 'is_active_sidebar', $is_active_sidebar, $index );
|
|
}
|
|
|
|
/* Internal Functions */
|
|
|
|
/**
|
|
* Retrieve full list of sidebars and their widget instance IDs.
|
|
*
|
|
* Will upgrade sidebar widget list, if needed. Will also save updated list, if
|
|
* needed.
|
|
*
|
|
* @since 2.2.0
|
|
* @access private
|
|
*
|
|
* @global array $_wp_sidebars_widgets
|
|
* @global array $sidebars_widgets
|
|
*
|
|
* @param bool $deprecated Not used (argument deprecated).
|
|
* @return array Upgraded list of widgets to version 3 array format when called from the admin.
|
|
*/
|
|
function wp_get_sidebars_widgets( $deprecated = true ) {
|
|
if ( $deprecated !== true )
|
|
_deprecated_argument( __FUNCTION__, '2.8.1' );
|
|
|
|
global $_wp_sidebars_widgets, $sidebars_widgets;
|
|
|
|
// If loading from front page, consult $_wp_sidebars_widgets rather than options
|
|
// to see if wp_convert_widget_settings() has made manipulations in memory.
|
|
if ( !is_admin() ) {
|
|
if ( empty($_wp_sidebars_widgets) )
|
|
$_wp_sidebars_widgets = get_option('sidebars_widgets', array());
|
|
|
|
$sidebars_widgets = $_wp_sidebars_widgets;
|
|
} else {
|
|
$sidebars_widgets = get_option('sidebars_widgets', array());
|
|
}
|
|
|
|
if ( is_array( $sidebars_widgets ) && isset($sidebars_widgets['array_version']) )
|
|
unset($sidebars_widgets['array_version']);
|
|
|
|
/**
|
|
* Filter the list of sidebars and their widgets.
|
|
*
|
|
* @since 2.7.0
|
|
*
|
|
* @param array $sidebars_widgets An associative array of sidebars and their widgets.
|
|
*/
|
|
return apply_filters( 'sidebars_widgets', $sidebars_widgets );
|
|
}
|
|
|
|
/**
|
|
* Set the sidebar widget option to update sidebars.
|
|
*
|
|
* @since 2.2.0
|
|
* @access private
|
|
*
|
|
* @param array $sidebars_widgets Sidebar widgets and their settings.
|
|
*/
|
|
function wp_set_sidebars_widgets( $sidebars_widgets ) {
|
|
if ( !isset( $sidebars_widgets['array_version'] ) )
|
|
$sidebars_widgets['array_version'] = 3;
|
|
update_option( 'sidebars_widgets', $sidebars_widgets );
|
|
}
|
|
|
|
/**
|
|
* Retrieve default registered sidebars list.
|
|
*
|
|
* @since 2.2.0
|
|
* @access private
|
|
*
|
|
* @global array $wp_registered_sidebars
|
|
*
|
|
* @return array
|
|
*/
|
|
function wp_get_widget_defaults() {
|
|
global $wp_registered_sidebars;
|
|
|
|
$defaults = array();
|
|
|
|
foreach ( (array) $wp_registered_sidebars as $index => $sidebar )
|
|
$defaults[$index] = array();
|
|
|
|
return $defaults;
|
|
}
|
|
|
|
/**
|
|
* Convert the widget settings from single to multi-widget format.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @global array $_wp_sidebars_widgets
|
|
*
|
|
* @param string $base_name
|
|
* @param string $option_name
|
|
* @param array $settings
|
|
* @return array
|
|
*/
|
|
function wp_convert_widget_settings($base_name, $option_name, $settings) {
|
|
// This test may need expanding.
|
|
$single = $changed = false;
|
|
if ( empty($settings) ) {
|
|
$single = true;
|
|
} else {
|
|
foreach ( array_keys($settings) as $number ) {
|
|
if ( 'number' == $number )
|
|
continue;
|
|
if ( !is_numeric($number) ) {
|
|
$single = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( $single ) {
|
|
$settings = array( 2 => $settings );
|
|
|
|
// If loading from the front page, update sidebar in memory but don't save to options
|
|
if ( is_admin() ) {
|
|
$sidebars_widgets = get_option('sidebars_widgets');
|
|
} else {
|
|
if ( empty($GLOBALS['_wp_sidebars_widgets']) )
|
|
$GLOBALS['_wp_sidebars_widgets'] = get_option('sidebars_widgets', array());
|
|
$sidebars_widgets = &$GLOBALS['_wp_sidebars_widgets'];
|
|
}
|
|
|
|
foreach ( (array) $sidebars_widgets as $index => $sidebar ) {
|
|
if ( is_array($sidebar) ) {
|
|
foreach ( $sidebar as $i => $name ) {
|
|
if ( $base_name == $name ) {
|
|
$sidebars_widgets[$index][$i] = "$name-2";
|
|
$changed = true;
|
|
break 2;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( is_admin() && $changed )
|
|
update_option('sidebars_widgets', $sidebars_widgets);
|
|
}
|
|
|
|
$settings['_multiwidget'] = 1;
|
|
if ( is_admin() )
|
|
update_option( $option_name, $settings );
|
|
|
|
return $settings;
|
|
}
|
|
|
|
/**
|
|
* Output an arbitrary widget as a template tag.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @global WP_Widget_Factory $wp_widget_factory
|
|
*
|
|
* @param string $widget The widget's PHP class name (see default-widgets.php).
|
|
* @param array $instance Optional. The widget's instance settings. Default empty array.
|
|
* @param array $args {
|
|
* Optional. Array of arguments to configure the display of the widget.
|
|
*
|
|
* @type string $before_widget HTML content that will be prepended to the widget's HTML output.
|
|
* Default `<div class="widget %s">`, where `%s` is the widget's class name.
|
|
* @type string $after_widget HTML content that will be appended to the widget's HTML output.
|
|
* Default `</div>`.
|
|
* @type string $before_title HTML content that will be prepended to the widget's title when displayed.
|
|
* Default `<h2 class="widgettitle">`.
|
|
* @type string $after_title HTML content that will be appended to the widget's title when displayed.
|
|
* Default `</h2>`.
|
|
* }
|
|
*/
|
|
function the_widget( $widget, $instance = array(), $args = array() ) {
|
|
global $wp_widget_factory;
|
|
|
|
$widget_obj = $wp_widget_factory->widgets[$widget];
|
|
if ( ! ( $widget_obj instanceof WP_Widget ) ) {
|
|
return;
|
|
}
|
|
|
|
$before_widget = sprintf('<div class="widget %s">', $widget_obj->widget_options['classname'] );
|
|
$default_args = array( 'before_widget' => $before_widget, 'after_widget' => "</div>", 'before_title' => '<h2 class="widgettitle">', 'after_title' => '</h2>' );
|
|
|
|
$args = wp_parse_args($args, $default_args);
|
|
$instance = wp_parse_args($instance);
|
|
|
|
/**
|
|
* Fires before rendering the requested widget.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @param string $widget The widget's class name.
|
|
* @param array $instance The current widget instance's settings.
|
|
* @param array $args An array of the widget's sidebar arguments.
|
|
*/
|
|
do_action( 'the_widget', $widget, $instance, $args );
|
|
|
|
$widget_obj->_set(-1);
|
|
$widget_obj->widget($args, $instance);
|
|
}
|
|
|
|
/**
|
|
* Private
|
|
*
|
|
* @return string
|
|
*/
|
|
function _get_widget_id_base($id) {
|
|
return preg_replace( '/-[0-9]+$/', '', $id );
|
|
}
|
|
|
|
/**
|
|
* Handle sidebars config after theme change
|
|
*
|
|
* @access private
|
|
* @since 3.3.0
|
|
*
|
|
* @global array $sidebars_widgets
|
|
*/
|
|
function _wp_sidebars_changed() {
|
|
global $sidebars_widgets;
|
|
|
|
if ( ! is_array( $sidebars_widgets ) )
|
|
$sidebars_widgets = wp_get_sidebars_widgets();
|
|
|
|
retrieve_widgets(true);
|
|
}
|
|
|
|
/**
|
|
* Look for "lost" widgets, this has to run at least on each theme change.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @global array $wp_registered_sidebars
|
|
* @global array $sidebars_widgets
|
|
* @global array $wp_registered_widgets
|
|
*
|
|
* @param string|bool $theme_changed Whether the theme was changed as a boolean. A value
|
|
* of 'customize' defers updates for the Customizer.
|
|
* @return array|void
|
|
*/
|
|
function retrieve_widgets( $theme_changed = false ) {
|
|
global $wp_registered_sidebars, $sidebars_widgets, $wp_registered_widgets;
|
|
|
|
$registered_sidebar_keys = array_keys( $wp_registered_sidebars );
|
|
$orphaned = 0;
|
|
|
|
$old_sidebars_widgets = get_theme_mod( 'sidebars_widgets' );
|
|
if ( is_array( $old_sidebars_widgets ) ) {
|
|
// time() that sidebars were stored is in $old_sidebars_widgets['time']
|
|
$_sidebars_widgets = $old_sidebars_widgets['data'];
|
|
|
|
if ( 'customize' !== $theme_changed ) {
|
|
remove_theme_mod( 'sidebars_widgets' );
|
|
}
|
|
|
|
foreach ( $_sidebars_widgets as $sidebar => $widgets ) {
|
|
if ( 'wp_inactive_widgets' === $sidebar || 'orphaned_widgets' === substr( $sidebar, 0, 16 ) ) {
|
|
continue;
|
|
}
|
|
|
|
if ( !in_array( $sidebar, $registered_sidebar_keys ) ) {
|
|
$_sidebars_widgets['orphaned_widgets_' . ++$orphaned] = $widgets;
|
|
unset( $_sidebars_widgets[$sidebar] );
|
|
}
|
|
}
|
|
} else {
|
|
if ( empty( $sidebars_widgets ) )
|
|
return;
|
|
|
|
unset( $sidebars_widgets['array_version'] );
|
|
|
|
$old = array_keys($sidebars_widgets);
|
|
sort($old);
|
|
sort($registered_sidebar_keys);
|
|
|
|
if ( $old == $registered_sidebar_keys )
|
|
return;
|
|
|
|
$_sidebars_widgets = array(
|
|
'wp_inactive_widgets' => !empty( $sidebars_widgets['wp_inactive_widgets'] ) ? $sidebars_widgets['wp_inactive_widgets'] : array()
|
|
);
|
|
|
|
unset( $sidebars_widgets['wp_inactive_widgets'] );
|
|
|
|
foreach ( $wp_registered_sidebars as $id => $settings ) {
|
|
if ( $theme_changed ) {
|
|
$_sidebars_widgets[$id] = array_shift( $sidebars_widgets );
|
|
} else {
|
|
// no theme change, grab only sidebars that are currently registered
|
|
if ( isset( $sidebars_widgets[$id] ) ) {
|
|
$_sidebars_widgets[$id] = $sidebars_widgets[$id];
|
|
unset( $sidebars_widgets[$id] );
|
|
}
|
|
}
|
|
}
|
|
|
|
foreach ( $sidebars_widgets as $val ) {
|
|
if ( is_array($val) && ! empty( $val ) )
|
|
$_sidebars_widgets['orphaned_widgets_' . ++$orphaned] = $val;
|
|
}
|
|
}
|
|
|
|
// discard invalid, theme-specific widgets from sidebars
|
|
$shown_widgets = array();
|
|
|
|
foreach ( $_sidebars_widgets as $sidebar => $widgets ) {
|
|
if ( !is_array($widgets) )
|
|
continue;
|
|
|
|
$_widgets = array();
|
|
foreach ( $widgets as $widget ) {
|
|
if ( isset($wp_registered_widgets[$widget]) )
|
|
$_widgets[] = $widget;
|
|
}
|
|
|
|
$_sidebars_widgets[$sidebar] = $_widgets;
|
|
$shown_widgets = array_merge($shown_widgets, $_widgets);
|
|
}
|
|
|
|
$sidebars_widgets = $_sidebars_widgets;
|
|
unset($_sidebars_widgets, $_widgets);
|
|
|
|
// find hidden/lost multi-widget instances
|
|
$lost_widgets = array();
|
|
foreach ( $wp_registered_widgets as $key => $val ) {
|
|
if ( in_array($key, $shown_widgets, true) )
|
|
continue;
|
|
|
|
$number = preg_replace('/.+?-([0-9]+)$/', '$1', $key);
|
|
|
|
if ( 2 > (int) $number )
|
|
continue;
|
|
|
|
$lost_widgets[] = $key;
|
|
}
|
|
|
|
$sidebars_widgets['wp_inactive_widgets'] = array_merge($lost_widgets, (array) $sidebars_widgets['wp_inactive_widgets']);
|
|
if ( 'customize' !== $theme_changed ) {
|
|
wp_set_sidebars_widgets( $sidebars_widgets );
|
|
}
|
|
|
|
return $sidebars_widgets;
|
|
}
|