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0fcf24a38e
Props stephanethomas. Fixes #34855. Built from https://develop.svn.wordpress.org/trunk@35864 git-svn-id: http://core.svn.wordpress.org/trunk@35828 1a063a9b-81f0-0310-95a4-ce76da25c4cd
1465 lines
46 KiB
PHP
1465 lines
46 KiB
PHP
<?php
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/**
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* Core Widgets API
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*
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* This API is used for creating dynamic sidebar without hardcoding functionality into
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* themes
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*
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* 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 the 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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* @since 2.2.0
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*/
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//
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// Global Variables
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//
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/** @ignore */
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global $wp_registered_sidebars, $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates;
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/**
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* Stores the sidebars, since many themes can have more than one.
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*
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* @global array $wp_registered_sidebars
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* @since 2.2.0
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*/
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$wp_registered_sidebars = array();
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/**
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* Stores the registered widgets.
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*
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* @global array $wp_registered_widgets
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* @since 2.2.0
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*/
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$wp_registered_widgets = array();
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/**
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* Stores the registered widget control (options).
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*
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* @global array $wp_registered_widget_controls
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* @since 2.2.0
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*/
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$wp_registered_widget_controls = array();
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/**
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* @global array $wp_registered_widget_updates
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*/
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$wp_registered_widget_updates = array();
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/**
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* Private
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*
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* @global array $_wp_sidebars_widgets
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*/
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$_wp_sidebars_widgets = array();
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/**
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* Private
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*
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* @global array $_wp_deprecated_widgets_callbacks
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*/
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$GLOBALS['_wp_deprecated_widgets_callbacks'] = array(
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'wp_widget_pages',
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'wp_widget_pages_control',
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'wp_widget_calendar',
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'wp_widget_calendar_control',
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'wp_widget_archives',
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'wp_widget_archives_control',
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'wp_widget_links',
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'wp_widget_meta',
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'wp_widget_meta_control',
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'wp_widget_search',
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'wp_widget_recent_entries',
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'wp_widget_recent_entries_control',
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'wp_widget_tag_cloud',
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'wp_widget_tag_cloud_control',
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'wp_widget_categories',
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'wp_widget_categories_control',
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'wp_widget_text',
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'wp_widget_text_control',
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'wp_widget_rss',
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'wp_widget_rss_control',
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'wp_widget_recent_comments',
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'wp_widget_recent_comments_control'
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);
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//
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// Template tags & API functions
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//
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/**
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* Register a widget
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*
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* Registers a WP_Widget widget
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*
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* @since 2.8.0
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*
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* @see WP_Widget
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*
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* @global WP_Widget_Factory $wp_widget_factory
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*
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* @param string $widget_class The name of a class that extends WP_Widget
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*/
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function register_widget($widget_class) {
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global $wp_widget_factory;
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$wp_widget_factory->register($widget_class);
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}
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/**
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* Unregister a widget
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*
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* Unregisters a WP_Widget widget. Useful for unregistering default widgets.
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* Run within a function hooked to the widgets_init action.
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*
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* @since 2.8.0
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*
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* @see WP_Widget
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*
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* @global WP_Widget_Factory $wp_widget_factory
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*
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* @param string $widget_class The name of a class that extends WP_Widget
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*/
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function unregister_widget($widget_class) {
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global $wp_widget_factory;
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$wp_widget_factory->unregister($widget_class);
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}
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/**
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* Creates multiple sidebars.
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*
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* If you wanted to quickly create multiple sidebars for a theme or internally.
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* This function will allow you to do so. If you don't pass the 'name' and/or
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* 'id' in `$args`, then they will be built for you.
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*
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* @since 2.2.0
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*
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* @see register_sidebar() The second parameter is documented by register_sidebar() and is the same here.
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*
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* @global array $wp_registered_sidebars
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*
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* @param int $number Optional. Number of sidebars to create. Default 1.
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* @param array|string $args {
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* Optional. Array or string of arguments for building a sidebar.
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*
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* @type string $id The base string of the unique identifier for each sidebar. If provided, and multiple
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* sidebars are being defined, the id will have "-2" appended, and so on.
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* Default 'sidebar-' followed by the number the sidebar creation is currently at.
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* @type string $name The name or title for the sidebars displayed in the admin dashboard. If registering
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* more than one sidebar, include '%d' in the string as a placeholder for the uniquely
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* assigned number for each sidebar.
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* Default 'Sidebar' for the first sidebar, otherwise 'Sidebar %d'.
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* }
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*/
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function register_sidebars( $number = 1, $args = array() ) {
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global $wp_registered_sidebars;
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$number = (int) $number;
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if ( is_string($args) )
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parse_str($args, $args);
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for ( $i = 1; $i <= $number; $i++ ) {
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$_args = $args;
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if ( $number > 1 )
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$_args['name'] = isset($args['name']) ? sprintf($args['name'], $i) : sprintf(__('Sidebar %d'), $i);
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else
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$_args['name'] = isset($args['name']) ? $args['name'] : __('Sidebar');
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// Custom specified ID's are suffixed if they exist already.
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// Automatically generated sidebar names need to be suffixed regardless starting at -0
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if ( isset($args['id']) ) {
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$_args['id'] = $args['id'];
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$n = 2; // Start at -2 for conflicting custom ID's
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while ( is_registered_sidebar( $_args['id'] ) ) {
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$_args['id'] = $args['id'] . '-' . $n++;
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}
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} else {
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$n = count( $wp_registered_sidebars );
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do {
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$_args['id'] = 'sidebar-' . ++$n;
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} while ( is_registered_sidebar( $_args['id'] ) );
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}
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register_sidebar($_args);
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}
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}
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/**
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* Builds the definition for a single sidebar and returns the ID.
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*
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* Accepts either a string or an array and then parses that against a set
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* of default arguments for the new sidebar. WordPress will automatically
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* generate a sidebar ID and name based on the current number of registered
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* sidebars if those arguments are not included.
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*
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* When allowing for automatic generation of the name and ID parameters, keep
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* in mind that the incrementor for your sidebar can change over time depending
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* on what other plugins and themes are installed.
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*
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* If theme support for 'widgets' has not yet been added when this function is
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* called, it will be automatically enabled through the use of add_theme_support()
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*
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* @since 2.2.0
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*
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* @global array $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
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*
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* @param array|string $args {
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* Optional. Array or string of arguments for the sidebar being registered.
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*
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* @type string $name The name or title of the sidebar displayed in the Widgets
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* interface. Default 'Sidebar $instance'.
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* @type string $id The unique identifier by which the sidebar will be called.
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* Default 'sidebar-$instance'.
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* @type string $description Description of the sidebar, displayed in the Widgets interface.
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* Default empty string.
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* @type string $class Extra CSS class to assign to the sidebar in the Widgets interface.
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* Default empty.
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* @type string $before_widget HTML content to prepend to each widget's HTML output when
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* assigned to this sidebar. Default is an opening list item element.
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* @type string $after_widget HTML content to append to each widget's HTML output when
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* assigned to this sidebar. Default is a closing list item element.
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* @type string $before_title HTML content to prepend to the sidebar title when displayed.
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* Default is an opening h2 element.
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* @type string $after_title HTML content to append to the sidebar title when displayed.
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* Default is a closing h2 element.
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* }
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* @return string Sidebar ID added to $wp_registered_sidebars global.
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*/
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function register_sidebar($args = array()) {
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global $wp_registered_sidebars;
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$i = count($wp_registered_sidebars) + 1;
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$id_is_empty = empty( $args['id'] );
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$defaults = array(
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'name' => sprintf(__('Sidebar %d'), $i ),
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'id' => "sidebar-$i",
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'description' => '',
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'class' => '',
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'before_widget' => '<li id="%1$s" class="widget %2$s">',
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'after_widget' => "</li>\n",
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'before_title' => '<h2 class="widgettitle">',
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'after_title' => "</h2>\n",
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);
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$sidebar = wp_parse_args( $args, $defaults );
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if ( $id_is_empty ) {
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/* translators: 1: the id argument, 2: sidebar name, 3: recommended id value */
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_doing_it_wrong( __FUNCTION__, sprintf( __( 'No %1$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'], $sidebar['id'] ), '4.2.0' );
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}
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$wp_registered_sidebars[$sidebar['id']] = $sidebar;
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add_theme_support('widgets');
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/**
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* Fires once a sidebar has been registered.
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*
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* @since 3.0.0
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*
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* @param array $sidebar Parsed arguments for the registered sidebar.
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*/
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do_action( 'register_sidebar', $sidebar );
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return $sidebar['id'];
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}
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/**
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* Removes a sidebar from the list.
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*
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* @since 2.2.0
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*
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* @global array $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
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*
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* @param string $name The ID of the sidebar when it was added.
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*/
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function unregister_sidebar( $name ) {
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global $wp_registered_sidebars;
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unset( $wp_registered_sidebars[ $name ] );
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}
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/**
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* Checks if a sidebar is registered.
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*
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* @since 4.4.0
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*
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* @global array $wp_registered_sidebars Registered sidebars.
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*
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* @param string|int $sidebar_id The ID of the sidebar when it was registered.
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* @return bool True if the sidebar is registered, false otherwise.
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*/
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function is_registered_sidebar( $sidebar_id ) {
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global $wp_registered_sidebars;
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return isset( $wp_registered_sidebars[ $sidebar_id ] );
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}
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/**
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* Register an instance of a widget.
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*
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* The default widget option is 'classname' that can be overridden.
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*
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* The function can also be used to un-register widgets when `$output_callback`
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* parameter is an empty string.
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*
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* @since 2.2.0
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*
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* @global array $wp_registered_widgets Uses stored registered widgets.
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* @global array $wp_register_widget_defaults Retrieves widget defaults.
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* @global array $wp_registered_widget_updates
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* @global array $_wp_deprecated_widgets_callbacks
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*
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* @param int|string $id Widget ID.
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* @param string $name Widget display title.
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* @param callable $output_callback Run when widget is called.
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* @param array $options {
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* Optional. An array of supplementary widget options for the instance.
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*
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* @type string $classname Class name for the widget's HTML container. Default is a shortened
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* version of the output callback name.
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* @type string $description Widget description for display in the widget administration
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* panel and/or theme.
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* }
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*/
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function wp_register_sidebar_widget( $id, $name, $output_callback, $options = array() ) {
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global $wp_registered_widgets, $wp_registered_widget_controls, $wp_registered_widget_updates, $_wp_deprecated_widgets_callbacks;
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$id = strtolower($id);
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if ( empty($output_callback) ) {
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unset($wp_registered_widgets[$id]);
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return;
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}
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$id_base = _get_widget_id_base($id);
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if ( in_array($output_callback, $_wp_deprecated_widgets_callbacks, true) && !is_callable($output_callback) ) {
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unset( $wp_registered_widget_controls[ $id ] );
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unset( $wp_registered_widget_updates[ $id_base ] );
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return;
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}
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$defaults = array('classname' => $output_callback);
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$options = wp_parse_args($options, $defaults);
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$widget = array(
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'name' => $name,
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'id' => $id,
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'callback' => $output_callback,
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'params' => array_slice(func_get_args(), 4)
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);
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$widget = array_merge($widget, $options);
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if ( is_callable($output_callback) && ( !isset($wp_registered_widgets[$id]) || did_action( 'widgets_init' ) ) ) {
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/**
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* Fires once for each registered widget.
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*
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* @since 3.0.0
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*
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* @param array $widget An array of default widget arguments.
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*/
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do_action( 'wp_register_sidebar_widget', $widget );
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$wp_registered_widgets[$id] = $widget;
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}
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}
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/**
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* Retrieve description for widget.
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*
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* When registering widgets, the options can also include 'description' that
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* describes the widget for display on the widget administration panel or
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* in the theme.
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*
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* @since 2.5.0
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*
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* @global array $wp_registered_widgets
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*
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* @param int|string $id Widget ID.
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* @return string|void Widget description, if available.
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*/
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function wp_widget_description( $id ) {
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if ( !is_scalar($id) )
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return;
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global $wp_registered_widgets;
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if ( isset($wp_registered_widgets[$id]['description']) )
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return esc_html( $wp_registered_widgets[$id]['description'] );
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}
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/**
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* Retrieve description for a sidebar.
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*
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* When registering sidebars a 'description' parameter can be included that
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* describes the sidebar for display on the widget administration panel.
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*
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* @since 2.9.0
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*
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* @global array $wp_registered_sidebars
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*
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* @param string $id sidebar ID.
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* @return string|void Sidebar description, if available.
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*/
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function wp_sidebar_description( $id ) {
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if ( !is_scalar($id) )
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return;
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global $wp_registered_sidebars;
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if ( isset($wp_registered_sidebars[$id]['description']) )
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return esc_html( $wp_registered_sidebars[$id]['description'] );
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}
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/**
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* Remove widget from sidebar.
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*
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* @since 2.2.0
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*
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* @param int|string $id Widget ID.
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*/
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function wp_unregister_sidebar_widget($id) {
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/**
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* Fires just before a widget is removed from a sidebar.
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*
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* @since 3.0.0
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*
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* @param int $id The widget ID.
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*/
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do_action( 'wp_unregister_sidebar_widget', $id );
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wp_register_sidebar_widget($id, '', '');
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wp_unregister_widget_control($id);
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}
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/**
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* Registers widget control callback for customizing options.
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*
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* @since 2.2.0
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*
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* @todo `$params` parameter?
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*
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* @global array $wp_registered_widget_controls
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* @global array $wp_registered_widget_updates
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* @global array $wp_registered_widgets
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* @global array $_wp_deprecated_widgets_callbacks
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*
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* @param int|string $id Sidebar ID.
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* @param string $name Sidebar display name.
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* @param callable $control_callback Run when sidebar is displayed.
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* @param array $options {
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* Optional. Array or string of control options. Default empty array.
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*
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* @type int $height Never used. Default 200.
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* @type int $width Width of the fully expanded control form (but try hard to use the default width).
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* Default 250.
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* @type int|string $id_base Required for multi-widgets, i.e widgets that allow multiple instances such as the
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* text widget. The widget id will end up looking like `{$id_base}-{$unique_number}`.
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* }
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*/
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function wp_register_widget_control( $id, $name, $control_callback, $options = array() ) {
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global $wp_registered_widget_controls, $wp_registered_widget_updates, $wp_registered_widgets, $_wp_deprecated_widgets_callbacks;
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$id = strtolower($id);
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$id_base = _get_widget_id_base($id);
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if ( empty($control_callback) ) {
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unset($wp_registered_widget_controls[$id]);
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unset($wp_registered_widget_updates[$id_base]);
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return;
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}
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if ( in_array($control_callback, $_wp_deprecated_widgets_callbacks, true) && !is_callable($control_callback) ) {
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unset( $wp_registered_widgets[ $id ] );
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return;
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}
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if ( isset($wp_registered_widget_controls[$id]) && !did_action( 'widgets_init' ) )
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return;
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$defaults = array('width' => 250, 'height' => 200 ); // height is never used
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$options = wp_parse_args($options, $defaults);
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$options['width'] = (int) $options['width'];
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$options['height'] = (int) $options['height'];
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$widget = array(
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'name' => $name,
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'id' => $id,
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'callback' => $control_callback,
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'params' => array_slice(func_get_args(), 4)
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);
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$widget = array_merge($widget, $options);
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$wp_registered_widget_controls[$id] = $widget;
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if ( isset($wp_registered_widget_updates[$id_base]) )
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return;
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|
|
if ( isset($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 {
|
|
$sanitized_index = sanitize_title( $index );
|
|
foreach ( (array) $wp_registered_sidebars as $key => $value ) {
|
|
if ( sanitize_title( $value['name'] ) == $sanitized_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.php */
|
|
do_action( 'dynamic_sidebar_before', $index, false );
|
|
/** This action is documented in wp-includes/widget.php */
|
|
do_action( 'dynamic_sidebar_after', $index, false );
|
|
/** This filter is documented in wp-includes/widget.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|callable $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 `<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;
|
|
}
|
|
|
|
$default_args = array(
|
|
'before_widget' => '<div class="widget %s">',
|
|
'after_widget' => "</div>",
|
|
'before_title' => '<h2 class="widgettitle">',
|
|
'after_title' => '</h2>',
|
|
);
|
|
$args = wp_parse_args( $args, $default_args );
|
|
$args['before_widget'] = sprintf( $args['before_widget'], $widget_obj->widget_options['classname'] );
|
|
|
|
$instance = wp_parse_args($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 '<p>' . sprintf( __('<strong>RSS Error</strong>: %s'), $rss->get_error_message() ) . '</p>';
|
|
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 '<ul><li>' . __( 'An error has occurred, which probably means the feed is down. Try again later.' ) . '</li></ul>';
|
|
$rss->__destruct();
|
|
unset($rss);
|
|
return;
|
|
}
|
|
|
|
echo '<ul>';
|
|
foreach ( $rss->get_items( 0, $items ) as $item ) {
|
|
$link = $item->get_link();
|
|
while ( stristr( $link, 'http' ) != $link ) {
|
|
$link = substr( $link, 1 );
|
|
}
|
|
$link = esc_url( strip_tags( $link ) );
|
|
|
|
$title = esc_html( trim( strip_tags( $item->get_title() ) ) );
|
|
if ( empty( $title ) ) {
|
|
$title = __( 'Untitled' );
|
|
}
|
|
|
|
$desc = @html_entity_decode( $item->get_description(), ENT_QUOTES, get_option( 'blog_charset' ) );
|
|
$desc = esc_attr( wp_trim_words( $desc, 55, ' […]' ) );
|
|
|
|
$summary = '';
|
|
if ( $show_summary ) {
|
|
$summary = $desc;
|
|
|
|
// Change existing [...] to […].
|
|
if ( '[...]' == substr( $summary, -5 ) ) {
|
|
$summary = substr( $summary, 0, -5 ) . '[…]';
|
|
}
|
|
|
|
$summary = '<div class="rssSummary">' . esc_html( $summary ) . '</div>';
|
|
}
|
|
|
|
$date = '';
|
|
if ( $show_date ) {
|
|
$date = $item->get_date( 'U' );
|
|
|
|
if ( $date ) {
|
|
$date = ' <span class="rss-date">' . date_i18n( get_option( 'date_format' ), $date ) . '</span>';
|
|
}
|
|
}
|
|
|
|
$author = '';
|
|
if ( $show_author ) {
|
|
$author = $item->get_author();
|
|
if ( is_object($author) ) {
|
|
$author = $author->get_name();
|
|
$author = ' <cite>' . esc_html( strip_tags( $author ) ) . '</cite>';
|
|
}
|
|
}
|
|
|
|
if ( $link == '' ) {
|
|
echo "<li>$title{$date}{$summary}{$author}</li>";
|
|
} elseif ( $show_summary ) {
|
|
echo "<li><a class='rsswidget' href='$link'>$title</a>{$date}{$summary}{$author}</li>";
|
|
} else {
|
|
echo "<li><a class='rsswidget' href='$link'>$title</a>{$date}{$author}</li>";
|
|
}
|
|
}
|
|
echo '</ul>';
|
|
$rss->__destruct();
|
|
unset($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 '<p class="widget-error"><strong>' . sprintf( __( 'RSS Error: %s' ), $args['error'] ) . '</strong></p>';
|
|
}
|
|
|
|
$esc_number = esc_attr( $args['number'] );
|
|
if ( $inputs['url'] ) :
|
|
?>
|
|
<p><label for="rss-url-<?php echo $esc_number; ?>"><?php _e( 'Enter the RSS feed URL here:' ); ?></label>
|
|
<input class="widefat" id="rss-url-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][url]" type="text" value="<?php echo esc_url( $args['url'] ); ?>" /></p>
|
|
<?php endif; if ( $inputs['title'] ) : ?>
|
|
<p><label for="rss-title-<?php echo $esc_number; ?>"><?php _e( 'Give the feed a title (optional):' ); ?></label>
|
|
<input class="widefat" id="rss-title-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][title]" type="text" value="<?php echo esc_attr( $args['title'] ); ?>" /></p>
|
|
<?php endif; if ( $inputs['items'] ) : ?>
|
|
<p><label for="rss-items-<?php echo $esc_number; ?>"><?php _e( 'How many items would you like to display?' ); ?></label>
|
|
<select id="rss-items-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][items]">
|
|
<?php
|
|
for ( $i = 1; $i <= 20; ++$i ) {
|
|
echo "<option value='$i' " . selected( $args['items'], $i, false ) . ">$i</option>";
|
|
}
|
|
?>
|
|
</select></p>
|
|
<?php endif; if ( $inputs['show_summary'] ) : ?>
|
|
<p><input id="rss-show-summary-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_summary]" type="checkbox" value="1" <?php checked( $args['show_summary'] ); ?> />
|
|
<label for="rss-show-summary-<?php echo $esc_number; ?>"><?php _e( 'Display item content?' ); ?></label></p>
|
|
<?php endif; if ( $inputs['show_author'] ) : ?>
|
|
<p><input id="rss-show-author-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_author]" type="checkbox" value="1" <?php checked( $args['show_author'] ); ?> />
|
|
<label for="rss-show-author-<?php echo $esc_number; ?>"><?php _e( 'Display item author if available?' ); ?></label></p>
|
|
<?php endif; if ( $inputs['show_date'] ) : ?>
|
|
<p><input id="rss-show-date-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][show_date]" type="checkbox" value="1" <?php checked( $args['show_date'] ); ?>/>
|
|
<label for="rss-show-date-<?php echo $esc_number; ?>"><?php _e( 'Display item date?' ); ?></label></p>
|
|
<?php
|
|
endif;
|
|
foreach ( array_keys($default_inputs) as $input ) :
|
|
if ( 'hidden' === $inputs[$input] ) :
|
|
$id = str_replace( '_', '-', $input );
|
|
?>
|
|
<input type="hidden" id="rss-<?php echo esc_attr( $id ); ?>-<?php echo $esc_number; ?>" name="widget-rss[<?php echo $esc_number; ?>][<?php echo esc_attr( $input ); ?>]" value="<?php echo esc_attr( $args[ $input ] ); ?>" />
|
|
<?php
|
|
endif;
|
|
endforeach;
|
|
}
|
|
|
|
/**
|
|
* Process RSS feed widget data and optionally retrieve feed items.
|
|
*
|
|
* The feed widget can not have more than 20 items or it will reset back to the
|
|
* default, which is 10.
|
|
*
|
|
* The resulting array has the feed title, feed url, feed link (from channel),
|
|
* feed items, error (if any), and whether to show summary, author, and date.
|
|
* All respectively in the order of the array elements.
|
|
*
|
|
* @since 2.5.0
|
|
*
|
|
* @param array $widget_rss RSS widget feed data. Expects unescaped data.
|
|
* @param bool $check_feed Optional, default is true. Whether to check feed for errors.
|
|
* @return array
|
|
*/
|
|
function wp_widget_rss_process( $widget_rss, $check_feed = true ) {
|
|
$items = (int) $widget_rss['items'];
|
|
if ( $items < 1 || 20 < $items )
|
|
$items = 10;
|
|
$url = esc_url_raw( strip_tags( $widget_rss['url'] ) );
|
|
$title = isset( $widget_rss['title'] ) ? trim( strip_tags( $widget_rss['title'] ) ) : '';
|
|
$show_summary = isset( $widget_rss['show_summary'] ) ? (int) $widget_rss['show_summary'] : 0;
|
|
$show_author = isset( $widget_rss['show_author'] ) ? (int) $widget_rss['show_author'] :0;
|
|
$show_date = isset( $widget_rss['show_date'] ) ? (int) $widget_rss['show_date'] : 0;
|
|
|
|
if ( $check_feed ) {
|
|
$rss = fetch_feed($url);
|
|
$error = false;
|
|
$link = '';
|
|
if ( is_wp_error($rss) ) {
|
|
$error = $rss->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' );
|
|
}
|