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cc5ed3a485
The exceptions to this are update_post_meta() and add_post_meta() which are often used by plugins in POST handlers and will continue accepting slashed data for now. Introduce wp_upate_post_meta() and wp_add_post_meta() as unslashed alternatives to update_post_meta() and add_post_meta(). These functions could become methods in WP_Post so don't use them too heavily yet. Remove all escape() calls from wp_xmlrpc_server. Now that core expects unslashed data this is no longer needed. Remove addslashes(), addslashes_gpc(), add_magic_quotes() calls on data being prepared for handoff to core functions that until now expected slashed data. Adding slashes in no longer necessary. Introduce wp_unslash() and use to it remove slashes from GPCS data before using it in core API. Almost every instance of stripslashes() in core should now be wp_unslash(). In the future (a release or three) when GPCS is no longer slashed, wp_unslash() will stop stripping slashes and simply return what is passed. At this point wp_unslash() calls can be removed from core. Introduce wp_slash() for slashing GPCS data. This will also turn into a noop once GPCS is no longer slashed. wp_slash() should almost never be used. It is mainly of use in unit tests. Plugins should use wp_unslash() on data being passed to core API. Plugins should no longer slash data being passed to core. So when you get_post() and then wp_insert_post() the post data from get_post() no longer needs addslashes(). Most plugins were not bothering with this. They will magically start doing the right thing. Unfortunately, those few souls who did it properly will now have to avoid calling addslashes() for 3.6 and newer. Use wp_kses_post() and wp_kses_data(), which expect unslashed data, instead of wp_filter_post_kses() and wp_filter_kses(), which expect slashed data. Filters are no longer passed slashed data. Remove many no longer necessary calls to $wpdb->escape() and esc_sql(). In wp_get_referer() and wp_get_original_referer(), return unslashed data. Remove old stripslashes() calls from WP_Widget::update() handlers. These haven't been necessary since WP_Widget. Switch several queries over to prepare(). Expect something to break. Props alexkingorg see #21767 git-svn-id: http://core.svn.wordpress.org/trunk@23416 1a063a9b-81f0-0310-95a4-ce76da25c4cd
1271 lines
38 KiB
PHP
1271 lines
38 KiB
PHP
<?php
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/**
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* API for creating dynamic sidebar without hardcoding functionality into
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* themes. Includes both internal WordPress routines and theme use routines.
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*
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* This functionality was found in a plugin before WordPress 2.2 release which
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* included it in the core from that point on.
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*
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* @link http://codex.wordpress.org/Plugins/WordPress_Widgets WordPress Widgets
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* @link http://codex.wordpress.org/Plugins/WordPress_Widgets_Api Widgets API
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*
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* @package WordPress
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* @subpackage Widgets
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*/
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/**
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* This class must be extended for each widget and WP_Widget::widget(), WP_Widget::update()
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* and WP_Widget::form() need to be over-ridden.
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*
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* @package WordPress
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* @subpackage Widgets
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* @since 2.8
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*/
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class WP_Widget {
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var $id_base; // Root id for all widgets of this type.
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var $name; // Name for this widget type.
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var $widget_options; // Option array passed to wp_register_sidebar_widget()
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var $control_options; // Option array passed to wp_register_widget_control()
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var $number = false; // Unique ID number of the current instance.
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var $id = false; // Unique ID string of the current instance (id_base-number)
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var $updated = false; // Set true when we update the data after a POST submit - makes sure we don't do it twice.
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// Member functions that you must over-ride.
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/** Echo the widget content.
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*
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* Subclasses should over-ride this function to generate their widget code.
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*
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* @param array $args Display arguments including before_title, after_title, before_widget, and after_widget.
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* @param array $instance The settings for the particular instance of the widget
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*/
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function widget($args, $instance) {
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die('function WP_Widget::widget() must be over-ridden in a sub-class.');
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}
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/** Update a particular instance.
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*
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* This function should check that $new_instance is set correctly.
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* The newly calculated value of $instance should be returned.
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* If "false" is returned, the instance won't be saved/updated.
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*
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* @param array $new_instance New settings for this instance as input by the user via form()
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* @param array $old_instance Old settings for this instance
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* @return array Settings to save or bool false to cancel saving
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*/
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function update($new_instance, $old_instance) {
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return $new_instance;
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}
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/** Echo the settings update form
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*
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* @param array $instance Current settings
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*/
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function form($instance) {
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echo '<p class="no-options-widget">' . __('There are no options for this widget.') . '</p>';
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return 'noform';
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}
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// Functions you'll need to call.
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/**
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* PHP4 constructor
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*/
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function WP_Widget( $id_base = false, $name, $widget_options = array(), $control_options = array() ) {
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WP_Widget::__construct( $id_base, $name, $widget_options, $control_options );
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}
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/**
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* PHP5 constructor
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*
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* @param string $id_base Optional Base ID for the widget, lower case,
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* if left empty a portion of the widget's class name will be used. Has to be unique.
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* @param string $name Name for the widget displayed on the configuration page.
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* @param array $widget_options Optional Passed to wp_register_sidebar_widget()
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* - description: shown on the configuration page
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* - classname
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* @param array $control_options Optional Passed to wp_register_widget_control()
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* - width: required if more than 250px
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* - height: currently not used but may be needed in the future
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*/
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function __construct( $id_base = false, $name, $widget_options = array(), $control_options = array() ) {
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$this->id_base = empty($id_base) ? preg_replace( '/(wp_)?widget_/', '', strtolower(get_class($this)) ) : strtolower($id_base);
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$this->name = $name;
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$this->option_name = 'widget_' . $this->id_base;
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$this->widget_options = wp_parse_args( $widget_options, array('classname' => $this->option_name) );
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$this->control_options = wp_parse_args( $control_options, array('id_base' => $this->id_base) );
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}
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/**
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* Constructs name attributes for use in form() fields
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*
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* This function should be used in form() methods to create name attributes for fields to be saved by update()
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*
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* @param string $field_name Field name
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* @return string Name attribute for $field_name
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*/
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function get_field_name($field_name) {
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return 'widget-' . $this->id_base . '[' . $this->number . '][' . $field_name . ']';
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}
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/**
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* Constructs id attributes for use in form() fields
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*
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* This function should be used in form() methods to create id attributes for fields to be saved by update()
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*
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* @param string $field_name Field name
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* @return string ID attribute for $field_name
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*/
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function get_field_id($field_name) {
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return 'widget-' . $this->id_base . '-' . $this->number . '-' . $field_name;
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}
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// Private Functions. Don't worry about these.
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function _register() {
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$settings = $this->get_settings();
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$empty = true;
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if ( is_array($settings) ) {
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foreach ( array_keys($settings) as $number ) {
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if ( is_numeric($number) ) {
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$this->_set($number);
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$this->_register_one($number);
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$empty = false;
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}
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}
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}
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if ( $empty ) {
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// If there are none, we register the widget's existence with a
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// generic template
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$this->_set(1);
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$this->_register_one();
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}
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}
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function _set($number) {
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$this->number = $number;
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$this->id = $this->id_base . '-' . $number;
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}
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function _get_display_callback() {
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return array($this, 'display_callback');
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}
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function _get_update_callback() {
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return array($this, 'update_callback');
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}
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function _get_form_callback() {
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return array($this, 'form_callback');
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}
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/** Generate the actual widget content.
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* Just finds the instance and calls widget().
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* Do NOT over-ride this function. */
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function display_callback( $args, $widget_args = 1 ) {
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if ( is_numeric($widget_args) )
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$widget_args = array( 'number' => $widget_args );
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$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
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$this->_set( $widget_args['number'] );
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$instance = $this->get_settings();
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if ( array_key_exists( $this->number, $instance ) ) {
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$instance = $instance[$this->number];
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// filters the widget's settings, return false to stop displaying the widget
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$instance = apply_filters('widget_display_callback', $instance, $this, $args);
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if ( false !== $instance )
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$this->widget($args, $instance);
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}
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}
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/** Deal with changed settings.
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* Do NOT over-ride this function. */
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function update_callback( $widget_args = 1 ) {
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global $wp_registered_widgets;
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if ( is_numeric($widget_args) )
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$widget_args = array( 'number' => $widget_args );
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$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
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$all_instances = $this->get_settings();
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// We need to update the data
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if ( $this->updated )
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return;
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$sidebars_widgets = wp_get_sidebars_widgets();
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if ( isset($_POST['delete_widget']) && $_POST['delete_widget'] ) {
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// Delete the settings for this instance of the widget
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if ( isset($_POST['the-widget-id']) )
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$del_id = $_POST['the-widget-id'];
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else
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return;
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if ( isset($wp_registered_widgets[$del_id]['params'][0]['number']) ) {
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$number = $wp_registered_widgets[$del_id]['params'][0]['number'];
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if ( $this->id_base . '-' . $number == $del_id )
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unset($all_instances[$number]);
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}
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} else {
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if ( isset($_POST['widget-' . $this->id_base]) && is_array($_POST['widget-' . $this->id_base]) ) {
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$settings = $_POST['widget-' . $this->id_base];
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} elseif ( isset($_POST['id_base']) && $_POST['id_base'] == $this->id_base ) {
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$num = $_POST['multi_number'] ? (int) $_POST['multi_number'] : (int) $_POST['widget_number'];
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$settings = array( $num => array() );
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} else {
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return;
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}
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foreach ( $settings as $number => $new_instance ) {
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$new_instance = wp_unslash($new_instance);
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$this->_set($number);
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$old_instance = isset($all_instances[$number]) ? $all_instances[$number] : array();
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$instance = $this->update($new_instance, $old_instance);
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// filters the widget's settings before saving, return false to cancel saving (keep the old settings if updating)
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$instance = apply_filters('widget_update_callback', $instance, $new_instance, $old_instance, $this);
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if ( false !== $instance )
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$all_instances[$number] = $instance;
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break; // run only once
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}
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}
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$this->save_settings($all_instances);
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$this->updated = true;
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}
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/** Generate the control form.
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* Do NOT over-ride this function. */
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function form_callback( $widget_args = 1 ) {
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if ( is_numeric($widget_args) )
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$widget_args = array( 'number' => $widget_args );
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$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
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$all_instances = $this->get_settings();
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if ( -1 == $widget_args['number'] ) {
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// We echo out a form where 'number' can be set later
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$this->_set('__i__');
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$instance = array();
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} else {
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$this->_set($widget_args['number']);
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$instance = $all_instances[ $widget_args['number'] ];
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}
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// filters the widget admin form before displaying, return false to stop displaying it
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$instance = apply_filters('widget_form_callback', $instance, $this);
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$return = null;
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if ( false !== $instance ) {
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$return = $this->form($instance);
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// add extra fields in the widget form - be sure to set $return to null if you add any
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// if the widget has no form the text echoed from the default form method can be hidden using css
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do_action_ref_array( 'in_widget_form', array(&$this, &$return, $instance) );
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}
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return $return;
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}
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/** Helper function: Registers a single instance. */
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function _register_one($number = -1) {
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wp_register_sidebar_widget( $this->id, $this->name, $this->_get_display_callback(), $this->widget_options, array( 'number' => $number ) );
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_register_widget_update_callback( $this->id_base, $this->_get_update_callback(), $this->control_options, array( 'number' => -1 ) );
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_register_widget_form_callback( $this->id, $this->name, $this->_get_form_callback(), $this->control_options, array( 'number' => $number ) );
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}
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function save_settings($settings) {
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$settings['_multiwidget'] = 1;
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update_option( $this->option_name, $settings );
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}
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function get_settings() {
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$settings = get_option($this->option_name);
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if ( false === $settings && isset($this->alt_option_name) )
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$settings = get_option($this->alt_option_name);
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if ( !is_array($settings) )
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$settings = array();
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if ( !empty($settings) && !array_key_exists('_multiwidget', $settings) ) {
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// old format, convert if single widget
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$settings = wp_convert_widget_settings($this->id_base, $this->option_name, $settings);
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}
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unset($settings['_multiwidget'], $settings['__i__']);
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return $settings;
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}
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}
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/**
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* Singleton that registers and instantiates WP_Widget classes.
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*
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* @package WordPress
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* @subpackage Widgets
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* @since 2.8
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*/
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class WP_Widget_Factory {
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var $widgets = array();
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function WP_Widget_Factory() {
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add_action( 'widgets_init', array( $this, '_register_widgets' ), 100 );
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}
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function register($widget_class) {
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$this->widgets[$widget_class] = new $widget_class();
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}
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function unregister($widget_class) {
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if ( isset($this->widgets[$widget_class]) )
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unset($this->widgets[$widget_class]);
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}
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function _register_widgets() {
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global $wp_registered_widgets;
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$keys = array_keys($this->widgets);
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$registered = array_keys($wp_registered_widgets);
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$registered = array_map('_get_widget_id_base', $registered);
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foreach ( $keys as $key ) {
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// don't register new widget if old widget with the same id is already registered
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if ( in_array($this->widgets[$key]->id_base, $registered, true) ) {
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unset($this->widgets[$key]);
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continue;
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}
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$this->widgets[$key]->_register();
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}
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}
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}
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/* Global Variables */
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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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$wp_registered_widget_updates = array();
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/**
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* Private
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*/
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$_wp_sidebars_widgets = array();
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/**
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* Private
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*/
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$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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/* Template tags & API functions */
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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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* @see WP_Widget_Factory
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* @uses 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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* @see WP_Widget_Factory
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* @uses 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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* The default for the name is "Sidebar #", with '#' being replaced with the
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* number the sidebar is currently when greater than one. If first sidebar, the
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* name will be just "Sidebar". The default for id is "sidebar-" followed by the
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* number the sidebar creation is currently at. If the id is provided, and multiple
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* sidebars are being defined, the id will have "-2" appended, and so on.
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*
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* @since 2.2.0
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*
|
|
* @see register_sidebar() The second parameter is documented by register_sidebar() and is the same here.
|
|
* @uses parse_str() Converts a string to an array to be used in the rest of the function.
|
|
* @uses register_sidebar() Sends single sidebar information [name, id] to this
|
|
* function to handle building the sidebar.
|
|
*
|
|
* @param int $number Number of sidebars to create.
|
|
* @param string|array $args Builds Sidebar based off of 'name' and 'id' values.
|
|
*/
|
|
function register_sidebars($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()
|
|
*
|
|
* Arguments passed as a string should be separated by '&':
|
|
*
|
|
* e.g. 'name=Sidebar&id=my_prefix_sidebar'
|
|
*
|
|
* The same arguments passed as an array:
|
|
*
|
|
* array(
|
|
* 'name' => 'Sidebar',
|
|
* 'id' => 'my_prefix_sidebar',
|
|
* )
|
|
*
|
|
* Arguments:
|
|
* name - The name or title of the sidebar displayed in the admin dashboard.
|
|
* id - The unique identifier by which the sidebar will be called.
|
|
* before_widget - HTML content that will be prepended to each widget's HTML output
|
|
* when assigned to this sidebar.
|
|
* after_widget - HTML content that will be appended to each widget's HTML output
|
|
* when assigned to this sidebar.
|
|
* before_title - HTML content that will be prepended to the sidebar title when displayed.
|
|
* after_title - HTML content that will be appended to the sidebar title when displayed.
|
|
*
|
|
* @since 2.2.0
|
|
* @uses $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
|
|
* @uses add_theme_support() to ensure widget support has been added.
|
|
*
|
|
* @param string|array $args Arguments for the sidebar being registered.
|
|
* @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;
|
|
|
|
$defaults = array(
|
|
'name' => sprintf(__('Sidebar %d'), $i ),
|
|
'id' => "sidebar-$i",
|
|
'description' => '',
|
|
'class' => '',
|
|
'before_widget' => '<li id="%1$s" class="widget %2$s">',
|
|
'after_widget' => "</li>\n",
|
|
'before_title' => '<h2 class="widgettitle">',
|
|
'after_title' => "</h2>\n",
|
|
);
|
|
|
|
$sidebar = wp_parse_args( $args, $defaults );
|
|
|
|
$wp_registered_sidebars[$sidebar['id']] = $sidebar;
|
|
|
|
add_theme_support('widgets');
|
|
|
|
do_action( 'register_sidebar', $sidebar );
|
|
|
|
return $sidebar['id'];
|
|
}
|
|
|
|
/**
|
|
* Removes a sidebar from the list.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @uses $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;
|
|
|
|
if ( isset( $wp_registered_sidebars[$name] ) )
|
|
unset( $wp_registered_sidebars[$name] );
|
|
}
|
|
|
|
/**
|
|
* Register widget for use in sidebars.
|
|
*
|
|
* The default widget option is 'classname' that can be override.
|
|
*
|
|
* The function can also be used to unregister widgets when $output_callback
|
|
* parameter is an empty string.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @uses $wp_registered_widgets Uses stored registered widgets.
|
|
* @uses $wp_register_widget_defaults Retrieves widget defaults.
|
|
*
|
|
* @param int|string $id Widget ID.
|
|
* @param string $name Widget display title.
|
|
* @param callback $output_callback Run when widget is called.
|
|
* @param array|string $options Optional. Widget Options.
|
|
* @param mixed $params,... Widget parameters to add to widget.
|
|
* @return null Will return if $output_callback is empty after removing widget.
|
|
*/
|
|
function wp_register_sidebar_widget($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) ) {
|
|
if ( isset($wp_registered_widget_controls[$id]) )
|
|
unset($wp_registered_widget_controls[$id]);
|
|
|
|
if ( isset($wp_registered_widget_updates[$id_base]) )
|
|
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' ) ) ) {
|
|
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
|
|
*
|
|
* @param int|string $id Widget ID.
|
|
* @return string Widget description, if available. Null on failure to retrieve description.
|
|
*/
|
|
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
|
|
*
|
|
* @param int|string $id sidebar ID.
|
|
* @return string Sidebar description, if available. Null on failure to retrieve description.
|
|
*/
|
|
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) {
|
|
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
|
|
*
|
|
* @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 above long description.
|
|
* @param mixed $params,... Optional. Additional parameters to add to widget.
|
|
*/
|
|
function wp_register_widget_control($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) ) {
|
|
if ( isset($wp_registered_widgets[$id]) )
|
|
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] = $widget;
|
|
}
|
|
|
|
function _register_widget_update_callback($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] = $widget;
|
|
}
|
|
|
|
function _register_widget_form_callback($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
|
|
* @uses wp_register_widget_control() Unregisters by using empty callback.
|
|
*
|
|
* @param int|string $id Widget ID.
|
|
*/
|
|
function wp_unregister_widget_control($id) {
|
|
return wp_register_widget_control($id, '', '');
|
|
}
|
|
|
|
/**
|
|
* Display dynamic sidebar.
|
|
*
|
|
* By default it displays the default sidebar or 'sidebar-1'. The 'sidebar-1' is
|
|
* not named by the theme, the actual name is '1', but 'sidebar-' is added to
|
|
* the registered sidebars for the name. If you named your sidebar 'after-post',
|
|
* then the parameter $index will still be 'after-post', but the lookup will be
|
|
* for 'sidebar-after-post'.
|
|
*
|
|
* It is confusing for the $index parameter, but just know that it should just
|
|
* work. When you register the sidebar in the theme, you will use the same name
|
|
* for this function or "Pay no heed to the man behind the curtain." Just accept
|
|
* it as an oddity of WordPress sidebar register and display.
|
|
*
|
|
* @since 2.2.0
|
|
*
|
|
* @param int|string $index Optional, default is 1. Name or ID of dynamic sidebar.
|
|
* @return bool True, if widget sidebar was found and called. False if not found or not called.
|
|
*/
|
|
function dynamic_sidebar($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( $sidebars_widgets ) )
|
|
return false;
|
|
|
|
if ( empty($wp_registered_sidebars[$index]) || !array_key_exists($index, $sidebars_widgets) || !is_array($sidebars_widgets[$index]) || empty($sidebars_widgets[$index]) )
|
|
return false;
|
|
|
|
$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_);
|
|
|
|
$params = apply_filters( 'dynamic_sidebar_params', $params );
|
|
|
|
$callback = $wp_registered_widgets[$id]['callback'];
|
|
|
|
do_action( 'dynamic_sidebar', $wp_registered_widgets[$id] );
|
|
|
|
if ( is_callable($callback) ) {
|
|
call_user_func_array($callback, $params);
|
|
$did_one = true;
|
|
}
|
|
}
|
|
|
|
return $did_one;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*
|
|
* @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 $skip_inactive Optional, whether to check in 'wp_inactive_widgets'.
|
|
* @return mixed false if widget is not active or id of sidebar in which the widget is active.
|
|
*/
|
|
function is_active_widget($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' == $sidebar )
|
|
continue;
|
|
|
|
if ( is_array($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
|
|
*
|
|
* @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
|
|
*
|
|
* @param mixed $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);
|
|
$sidebars_widgets = wp_get_sidebars_widgets();
|
|
if ( !empty($sidebars_widgets[$index]) )
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Internal Functions */
|
|
|
|
/**
|
|
* Retrieve full list of sidebars and their widgets.
|
|
*
|
|
* Will upgrade sidebar widget list, if needed. Will also save updated list, if
|
|
* needed.
|
|
*
|
|
* @since 2.2.0
|
|
* @access private
|
|
*
|
|
* @param bool $deprecated Not used (deprecated).
|
|
* @return array Upgraded list of widgets to version 3 array format when called from the admin.
|
|
*/
|
|
function wp_get_sidebars_widgets($deprecated = true) {
|
|
if ( $deprecated !== true )
|
|
_deprecated_argument( __FUNCTION__, '2.8.1' );
|
|
|
|
global $wp_registered_widgets, $_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']);
|
|
|
|
$sidebars_widgets = apply_filters('sidebars_widgets', $sidebars_widgets);
|
|
return $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
|
|
*
|
|
* @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 $defaults;
|
|
}
|
|
|
|
/**
|
|
* Convert the widget settings from single to multi-widget format.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @return array
|
|
*/
|
|
function wp_convert_widget_settings($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
|
|
*
|
|
* @param string $widget the widget's PHP class name (see default-widgets.php)
|
|
* @param array $instance the widget's instance settings
|
|
* @param array $args the widget's sidebar args
|
|
* @return void
|
|
**/
|
|
function the_widget($widget, $instance = array(), $args = array()) {
|
|
global $wp_widget_factory;
|
|
|
|
$widget_obj = $wp_widget_factory->widgets[$widget];
|
|
if ( !is_a($widget_obj, 'WP_Widget') )
|
|
return;
|
|
|
|
$before_widget = sprintf('<div class="widget %s">', $widget_obj->widget_options['classname'] );
|
|
$default_args = array( 'before_widget' => $before_widget, 'after_widget' => "</div>", 'before_title' => '<h2 class="widgettitle">', 'after_title' => '</h2>' );
|
|
|
|
$args = wp_parse_args($args, $default_args);
|
|
$instance = wp_parse_args($instance);
|
|
|
|
do_action( 'the_widget', $widget, $instance, $args );
|
|
|
|
$widget_obj->_set(-1);
|
|
$widget_obj->widget($args, $instance);
|
|
}
|
|
|
|
/**
|
|
* Private
|
|
*/
|
|
function _get_widget_id_base($id) {
|
|
return preg_replace( '/-[0-9]+$/', '', $id );
|
|
}
|
|
|
|
/**
|
|
* Handle sidebars config after theme change
|
|
*
|
|
* @access private
|
|
* @since 3.3.0
|
|
*/
|
|
function _wp_sidebars_changed() {
|
|
global $sidebars_widgets;
|
|
|
|
if ( ! is_array( $sidebars_widgets ) )
|
|
$sidebars_widgets = wp_get_sidebars_widgets();
|
|
|
|
retrieve_widgets(true);
|
|
}
|
|
|
|
// look for "lost" widgets, this has to run at least on each theme change
|
|
function retrieve_widgets($theme_changed = false) {
|
|
global $wp_registered_widget_updates, $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'];
|
|
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) $sidebars_widgets['wp_inactive_widgets']);
|
|
wp_set_sidebars_widgets($sidebars_widgets);
|
|
|
|
return $sidebars_widgets;
|
|
}
|