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' => '
  • ', 'after_widget' => "
    • \n", 'before_title' => '

    ', 'after_title' => "

    \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.' ), 'id', $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/widget-functions.php */ do_action( 'dynamic_sidebar_before', $index, false ); /** This action is documented in wp-includes/widget-functions.php */ do_action( 'dynamic_sidebar_after', $index, false ); /** This filter is documented in wp-includes/widget-functions.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 class-wp-widget.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 `
    `, 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 `
    `. * @type string $before_title HTML content that will be prepended to the widget's title when displayed. * Default `

    `. * @type string $after_title HTML content that will be appended to the widget's title when displayed. * Default `

    `. * } */ 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('
    ', $widget_obj->widget_options['classname'] ); $default_args = array( 'before_widget' => $before_widget, 'after_widget' => "
    ", 'before_title' => '

    ', 'after_title' => '

    ' ); $args = wp_parse_args($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; } /** * Display the RSS entries in a list. * * @since 2.5.0 * * @param string|array|object $rss RSS url. * @param array $args Widget arguments. */ function wp_widget_rss_output( $rss, $args = array() ) { if ( is_string( $rss ) ) { $rss = fetch_feed($rss); } elseif ( is_array($rss) && isset($rss['url']) ) { $args = $rss; $rss = fetch_feed($rss['url']); } elseif ( !is_object($rss) ) { return; } if ( is_wp_error($rss) ) { if ( is_admin() || current_user_can('manage_options') ) echo '

    ' . sprintf( __('RSS Error: %s'), $rss->get_error_message() ) . '

    '; return; } $default_args = array( 'show_author' => 0, 'show_date' => 0, 'show_summary' => 0, 'items' => 0 ); $args = wp_parse_args( $args, $default_args ); $items = (int) $args['items']; if ( $items < 1 || 20 < $items ) $items = 10; $show_summary = (int) $args['show_summary']; $show_author = (int) $args['show_author']; $show_date = (int) $args['show_date']; if ( !$rss->get_item_quantity() ) { echo ''; $rss->__destruct(); unset($rss); return; } echo ''; $rss->__destruct(); unset($rss); } /** * Display RSS widget options form. * * The options for what fields are displayed for the RSS form are all booleans * and are as follows: 'url', 'title', 'items', 'show_summary', 'show_author', * 'show_date'. * * @since 2.5.0 * * @param array|string $args Values for input fields. * @param array $inputs Override default display options. */ function wp_widget_rss_form( $args, $inputs = null ) { $default_inputs = array( 'url' => true, 'title' => true, 'items' => true, 'show_summary' => true, 'show_author' => true, 'show_date' => true ); $inputs = wp_parse_args( $inputs, $default_inputs ); $args['title'] = isset( $args['title'] ) ? $args['title'] : ''; $args['url'] = isset( $args['url'] ) ? $args['url'] : ''; $args['items'] = isset( $args['items'] ) ? (int) $args['items'] : 0; if ( $args['items'] < 1 || 20 < $args['items'] ) { $args['items'] = 10; } $args['show_summary'] = isset( $args['show_summary'] ) ? (int) $args['show_summary'] : (int) $inputs['show_summary']; $args['show_author'] = isset( $args['show_author'] ) ? (int) $args['show_author'] : (int) $inputs['show_author']; $args['show_date'] = isset( $args['show_date'] ) ? (int) $args['show_date'] : (int) $inputs['show_date']; if ( ! empty( $args['error'] ) ) { echo '

    ' . sprintf( __( 'RSS Error: %s' ), $args['error'] ) . '

    '; } $esc_number = esc_attr( $args['number'] ); if ( $inputs['url'] ) : ?>

    />

    />

    />

    get_error_message(); } else { $link = esc_url(strip_tags($rss->get_permalink())); while ( stristr($link, 'http') != $link ) $link = substr($link, 1); $rss->__destruct(); unset($rss); } } return compact( 'title', 'url', 'link', 'items', 'error', 'show_summary', 'show_author', 'show_date' ); } /** * Register all of the default WordPress widgets on startup. * * Calls 'widgets_init' action after all of the WordPress widgets have been * registered. * * @since 2.2.0 */ function wp_widgets_init() { if ( !is_blog_installed() ) return; register_widget('WP_Widget_Pages'); register_widget('WP_Widget_Calendar'); register_widget('WP_Widget_Archives'); if ( get_option( 'link_manager_enabled' ) ) register_widget('WP_Widget_Links'); register_widget('WP_Widget_Meta'); register_widget('WP_Widget_Search'); register_widget('WP_Widget_Text'); register_widget('WP_Widget_Categories'); register_widget('WP_Widget_Recent_Posts'); register_widget('WP_Widget_Recent_Comments'); register_widget('WP_Widget_RSS'); register_widget('WP_Widget_Tag_Cloud'); register_widget('WP_Nav_Menu_Widget'); /** * Fires after all default WordPress widgets have been registered. * * @since 2.2.0 */ do_action( 'widgets_init' ); }