mirror of
https://github.com/WordPress/WordPress.git
synced 2024-12-22 17:18:32 +01:00
5ef0c89c61
This commit adds missing `void` return types to (parent) methods that can ''explicitly'' return `void` as one of their conditional paths. Addressed methods: * `WP_Privacy_Requests_Table::column_status()` * `WP_Recovery_Mode::handle_error()` * `WP_Widget::form()` — unlike the others, it's the ''child'' classes that return `void` when the method is correctly implemented. Note: `@return void` (where `void` is the single type returned) should not be used outside the default bundled themes and the PHP compatibility shims included in WordPress Core, as per the [https://developer.wordpress.org/coding-standards/inline-documentation-standards/php/ documentation standards]. Follow-up to [30382], [42967], [43256], [44973], [45448]. Props justlevine. See #52217, #62281. Built from https://develop.svn.wordpress.org/trunk@59336 git-svn-id: http://core.svn.wordpress.org/trunk@58722 1a063a9b-81f0-0310-95a4-ce76da25c4cd
642 lines
18 KiB
PHP
642 lines
18 KiB
PHP
<?php
|
|
/**
|
|
* Widget API: WP_Widget base class
|
|
*
|
|
* @package WordPress
|
|
* @subpackage Widgets
|
|
* @since 4.4.0
|
|
*/
|
|
|
|
/**
|
|
* Core base class extended to register widgets.
|
|
*
|
|
* This class must be extended for each widget, and WP_Widget::widget() must be overridden.
|
|
*
|
|
* If adding widget options, WP_Widget::update() and WP_Widget::form() should also be overridden.
|
|
*
|
|
* @since 2.8.0
|
|
* @since 4.4.0 Moved to its own file from wp-includes/widgets.php
|
|
*/
|
|
#[AllowDynamicProperties]
|
|
class WP_Widget {
|
|
|
|
/**
|
|
* Root ID for all widgets of this type.
|
|
*
|
|
* @since 2.8.0
|
|
* @var mixed|string
|
|
*/
|
|
public $id_base;
|
|
|
|
/**
|
|
* Name for this widget type.
|
|
*
|
|
* @since 2.8.0
|
|
* @var string
|
|
*/
|
|
public $name;
|
|
|
|
/**
|
|
* Option name for this widget type.
|
|
*
|
|
* @since 2.8.0
|
|
* @var string
|
|
*/
|
|
public $option_name;
|
|
|
|
/**
|
|
* Alt option name for this widget type.
|
|
*
|
|
* @since 2.8.0
|
|
* @var string
|
|
*/
|
|
public $alt_option_name;
|
|
|
|
/**
|
|
* Option array passed to wp_register_sidebar_widget().
|
|
*
|
|
* @since 2.8.0
|
|
* @var array
|
|
*/
|
|
public $widget_options;
|
|
|
|
/**
|
|
* Option array passed to wp_register_widget_control().
|
|
*
|
|
* @since 2.8.0
|
|
* @var array
|
|
*/
|
|
public $control_options;
|
|
|
|
/**
|
|
* Unique ID number of the current instance.
|
|
*
|
|
* @since 2.8.0
|
|
* @var bool|int
|
|
*/
|
|
public $number = false;
|
|
|
|
/**
|
|
* Unique ID string of the current instance (id_base-number).
|
|
*
|
|
* @since 2.8.0
|
|
* @var bool|string
|
|
*/
|
|
public $id = false;
|
|
|
|
/**
|
|
* Whether the widget data has been updated.
|
|
*
|
|
* Set to true when the data is updated after a POST submit - ensures it does
|
|
* not happen twice.
|
|
*
|
|
* @since 2.8.0
|
|
* @var bool
|
|
*/
|
|
public $updated = false;
|
|
|
|
//
|
|
// Member functions that must be overridden by subclasses.
|
|
//
|
|
|
|
/**
|
|
* Echoes the widget content.
|
|
*
|
|
* Subclasses should override this function to generate their widget code.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $args Display arguments including 'before_title', 'after_title',
|
|
* 'before_widget', and 'after_widget'.
|
|
* @param array $instance The settings for the particular instance of the widget.
|
|
*/
|
|
public function widget( $args, $instance ) {
|
|
die( 'function WP_Widget::widget() must be overridden in a subclass.' );
|
|
}
|
|
|
|
/**
|
|
* Updates a particular instance of a widget.
|
|
*
|
|
* This function should check that `$new_instance` is set correctly. The newly-calculated
|
|
* value of `$instance` should be returned. If false is returned, the instance won't be
|
|
* saved/updated.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $new_instance New settings for this instance as input by the user via
|
|
* WP_Widget::form().
|
|
* @param array $old_instance Old settings for this instance.
|
|
* @return array Settings to save or bool false to cancel saving.
|
|
*/
|
|
public function update( $new_instance, $old_instance ) {
|
|
return $new_instance;
|
|
}
|
|
|
|
/**
|
|
* Outputs the settings update form.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $instance The settings for the particular instance of the widget.
|
|
* @return string|void Default return is 'noform'.
|
|
*/
|
|
public function form( $instance ) {
|
|
echo '<p class="no-options-widget">' . __( 'There are no options for this widget.' ) . '</p>';
|
|
return 'noform';
|
|
}
|
|
|
|
// Functions you'll need to call.
|
|
|
|
/**
|
|
* PHP5 constructor.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param string $id_base Base ID for the widget, lowercase and unique. If left empty,
|
|
* a portion of the widget's PHP class name will be used. Has to be unique.
|
|
* @param string $name Name for the widget displayed on the configuration page.
|
|
* @param array $widget_options Optional. Widget options. See wp_register_sidebar_widget() for
|
|
* information on accepted arguments. Default empty array.
|
|
* @param array $control_options Optional. Widget control options. See wp_register_widget_control() for
|
|
* information on accepted arguments. Default empty array.
|
|
*/
|
|
public function __construct( $id_base, $name, $widget_options = array(), $control_options = array() ) {
|
|
if ( ! empty( $id_base ) ) {
|
|
$id_base = strtolower( $id_base );
|
|
} else {
|
|
$id_base = preg_replace( '/(wp_)?widget_/', '', strtolower( get_class( $this ) ) );
|
|
}
|
|
|
|
$this->id_base = $id_base;
|
|
$this->name = $name;
|
|
$this->option_name = 'widget_' . $this->id_base;
|
|
$this->widget_options = wp_parse_args(
|
|
$widget_options,
|
|
array(
|
|
'classname' => str_replace( '\\', '_', $this->option_name ),
|
|
'customize_selective_refresh' => false,
|
|
)
|
|
);
|
|
$this->control_options = wp_parse_args( $control_options, array( 'id_base' => $this->id_base ) );
|
|
}
|
|
|
|
/**
|
|
* PHP4 constructor.
|
|
*
|
|
* @since 2.8.0
|
|
* @deprecated 4.3.0 Use __construct() instead.
|
|
*
|
|
* @see WP_Widget::__construct()
|
|
*
|
|
* @param string $id_base Base ID for the widget, lowercase and unique. If left empty,
|
|
* a portion of the widget's PHP class name will be used. Has to be unique.
|
|
* @param string $name Name for the widget displayed on the configuration page.
|
|
* @param array $widget_options Optional. Widget options. See wp_register_sidebar_widget() for
|
|
* information on accepted arguments. Default empty array.
|
|
* @param array $control_options Optional. Widget control options. See wp_register_widget_control() for
|
|
* information on accepted arguments. Default empty array.
|
|
*/
|
|
public function WP_Widget( $id_base, $name, $widget_options = array(), $control_options = array() ) {
|
|
_deprecated_constructor( 'WP_Widget', '4.3.0', get_class( $this ) );
|
|
WP_Widget::__construct( $id_base, $name, $widget_options, $control_options );
|
|
}
|
|
|
|
/**
|
|
* Constructs name attributes for use in form() fields
|
|
*
|
|
* This function should be used in form() methods to create name attributes for fields
|
|
* to be saved by update()
|
|
*
|
|
* @since 2.8.0
|
|
* @since 4.4.0 Array format field names are now accepted.
|
|
*
|
|
* @param string $field_name Field name.
|
|
* @return string Name attribute for `$field_name`.
|
|
*/
|
|
public function get_field_name( $field_name ) {
|
|
$pos = strpos( $field_name, '[' );
|
|
|
|
if ( false !== $pos ) {
|
|
// Replace the first occurrence of '[' with ']['.
|
|
$field_name = '[' . substr_replace( $field_name, '][', $pos, strlen( '[' ) );
|
|
} else {
|
|
$field_name = '[' . $field_name . ']';
|
|
}
|
|
|
|
return 'widget-' . $this->id_base . '[' . $this->number . ']' . $field_name;
|
|
}
|
|
|
|
/**
|
|
* Constructs id attributes for use in WP_Widget::form() fields.
|
|
*
|
|
* This function should be used in form() methods to create id attributes
|
|
* for fields to be saved by WP_Widget::update().
|
|
*
|
|
* @since 2.8.0
|
|
* @since 4.4.0 Array format field IDs are now accepted.
|
|
*
|
|
* @param string $field_name Field name.
|
|
* @return string ID attribute for `$field_name`.
|
|
*/
|
|
public function get_field_id( $field_name ) {
|
|
$field_name = str_replace( array( '[]', '[', ']' ), array( '', '-', '' ), $field_name );
|
|
$field_name = trim( $field_name, '-' );
|
|
|
|
return 'widget-' . $this->id_base . '-' . $this->number . '-' . $field_name;
|
|
}
|
|
|
|
/**
|
|
* Register all widget instances of this widget class.
|
|
*
|
|
* @since 2.8.0
|
|
*/
|
|
public function _register() {
|
|
$settings = $this->get_settings();
|
|
$empty = true;
|
|
|
|
// When $settings is an array-like object, get an intrinsic array for use with array_keys().
|
|
if ( $settings instanceof ArrayObject || $settings instanceof ArrayIterator ) {
|
|
$settings = $settings->getArrayCopy();
|
|
}
|
|
|
|
if ( is_array( $settings ) ) {
|
|
foreach ( array_keys( $settings ) as $number ) {
|
|
if ( is_numeric( $number ) ) {
|
|
$this->_set( $number );
|
|
$this->_register_one( $number );
|
|
$empty = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( $empty ) {
|
|
// If there are none, we register the widget's existence with a generic template.
|
|
$this->_set( 1 );
|
|
$this->_register_one();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the internal order number for the widget instance.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param int $number The unique order number of this widget instance compared to other
|
|
* instances of the same class.
|
|
*/
|
|
public function _set( $number ) {
|
|
$this->number = $number;
|
|
$this->id = $this->id_base . '-' . $number;
|
|
}
|
|
|
|
/**
|
|
* Retrieves the widget display callback.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @return callable Display callback.
|
|
*/
|
|
public function _get_display_callback() {
|
|
return array( $this, 'display_callback' );
|
|
}
|
|
|
|
/**
|
|
* Retrieves the widget update callback.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @return callable Update callback.
|
|
*/
|
|
public function _get_update_callback() {
|
|
return array( $this, 'update_callback' );
|
|
}
|
|
|
|
/**
|
|
* Retrieves the form callback.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @return callable Form callback.
|
|
*/
|
|
public function _get_form_callback() {
|
|
return array( $this, 'form_callback' );
|
|
}
|
|
|
|
/**
|
|
* Determines whether the current request is inside the Customizer preview.
|
|
*
|
|
* If true -- the current request is inside the Customizer preview, then
|
|
* the object cache gets suspended and widgets should check this to decide
|
|
* whether they should store anything persistently to the object cache,
|
|
* to transients, or anywhere else.
|
|
*
|
|
* @since 3.9.0
|
|
*
|
|
* @global WP_Customize_Manager $wp_customize
|
|
*
|
|
* @return bool True if within the Customizer preview, false if not.
|
|
*/
|
|
public function is_preview() {
|
|
global $wp_customize;
|
|
return ( isset( $wp_customize ) && $wp_customize->is_preview() );
|
|
}
|
|
|
|
/**
|
|
* Generates the actual widget content (Do NOT override).
|
|
*
|
|
* Finds the instance and calls WP_Widget::widget().
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $args Display arguments. See WP_Widget::widget() for information
|
|
* on accepted arguments.
|
|
* @param int|array $widget_args {
|
|
* Optional. Internal order number of the widget instance, or array of multi-widget arguments.
|
|
* Default 1.
|
|
*
|
|
* @type int $number Number increment used for multiples of the same widget.
|
|
* }
|
|
*/
|
|
public function display_callback( $args, $widget_args = 1 ) {
|
|
if ( is_numeric( $widget_args ) ) {
|
|
$widget_args = array( 'number' => $widget_args );
|
|
}
|
|
|
|
$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
|
|
$this->_set( $widget_args['number'] );
|
|
$instances = $this->get_settings();
|
|
|
|
if ( isset( $instances[ $this->number ] ) ) {
|
|
$instance = $instances[ $this->number ];
|
|
|
|
/**
|
|
* Filters the settings for a particular widget instance.
|
|
*
|
|
* Returning false will effectively short-circuit display of the widget.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $instance The current widget instance's settings.
|
|
* @param WP_Widget $widget The current widget instance.
|
|
* @param array $args An array of default widget arguments.
|
|
*/
|
|
$instance = apply_filters( 'widget_display_callback', $instance, $this, $args );
|
|
|
|
if ( false === $instance ) {
|
|
return;
|
|
}
|
|
|
|
$was_cache_addition_suspended = wp_suspend_cache_addition();
|
|
if ( $this->is_preview() && ! $was_cache_addition_suspended ) {
|
|
wp_suspend_cache_addition( true );
|
|
}
|
|
|
|
$this->widget( $args, $instance );
|
|
|
|
if ( $this->is_preview() ) {
|
|
wp_suspend_cache_addition( $was_cache_addition_suspended );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Handles changed settings (Do NOT override).
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @global array $wp_registered_widgets
|
|
*
|
|
* @param int $deprecated Not used.
|
|
*/
|
|
public function update_callback( $deprecated = 1 ) {
|
|
global $wp_registered_widgets;
|
|
|
|
$all_instances = $this->get_settings();
|
|
|
|
// We need to update the data.
|
|
if ( $this->updated ) {
|
|
return;
|
|
}
|
|
|
|
if ( isset( $_POST['delete_widget'] ) && $_POST['delete_widget'] ) {
|
|
// Delete the settings for this instance of the widget.
|
|
if ( isset( $_POST['the-widget-id'] ) ) {
|
|
$del_id = $_POST['the-widget-id'];
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
if ( isset( $wp_registered_widgets[ $del_id ]['params'][0]['number'] ) ) {
|
|
$number = $wp_registered_widgets[ $del_id ]['params'][0]['number'];
|
|
|
|
if ( $this->id_base . '-' . $number === $del_id ) {
|
|
unset( $all_instances[ $number ] );
|
|
}
|
|
}
|
|
} else {
|
|
if ( isset( $_POST[ 'widget-' . $this->id_base ] ) && is_array( $_POST[ 'widget-' . $this->id_base ] ) ) {
|
|
$settings = $_POST[ 'widget-' . $this->id_base ];
|
|
} elseif ( isset( $_POST['id_base'] ) && $_POST['id_base'] === $this->id_base ) {
|
|
$num = $_POST['multi_number'] ? (int) $_POST['multi_number'] : (int) $_POST['widget_number'];
|
|
$settings = array( $num => array() );
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
foreach ( $settings as $number => $new_instance ) {
|
|
$new_instance = stripslashes_deep( $new_instance );
|
|
$this->_set( $number );
|
|
|
|
$old_instance = isset( $all_instances[ $number ] ) ? $all_instances[ $number ] : array();
|
|
|
|
$was_cache_addition_suspended = wp_suspend_cache_addition();
|
|
if ( $this->is_preview() && ! $was_cache_addition_suspended ) {
|
|
wp_suspend_cache_addition( true );
|
|
}
|
|
|
|
$instance = $this->update( $new_instance, $old_instance );
|
|
|
|
if ( $this->is_preview() ) {
|
|
wp_suspend_cache_addition( $was_cache_addition_suspended );
|
|
}
|
|
|
|
/**
|
|
* Filters a widget's settings before saving.
|
|
*
|
|
* Returning false will effectively short-circuit the widget's ability
|
|
* to update settings.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $instance The current widget instance's settings.
|
|
* @param array $new_instance Array of new widget settings.
|
|
* @param array $old_instance Array of old widget settings.
|
|
* @param WP_Widget $widget The current widget instance.
|
|
*/
|
|
$instance = apply_filters( 'widget_update_callback', $instance, $new_instance, $old_instance, $this );
|
|
|
|
if ( false !== $instance ) {
|
|
$all_instances[ $number ] = $instance;
|
|
}
|
|
|
|
break; // Run only once.
|
|
}
|
|
}
|
|
|
|
$this->save_settings( $all_instances );
|
|
$this->updated = true;
|
|
}
|
|
|
|
/**
|
|
* Generates the widget control form (Do NOT override).
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param int|array $widget_args {
|
|
* Optional. Internal order number of the widget instance, or array of multi-widget arguments.
|
|
* Default 1.
|
|
*
|
|
* @type int $number Number increment used for multiples of the same widget.
|
|
* }
|
|
* @return string|null
|
|
*/
|
|
public function form_callback( $widget_args = 1 ) {
|
|
if ( is_numeric( $widget_args ) ) {
|
|
$widget_args = array( 'number' => $widget_args );
|
|
}
|
|
|
|
$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
|
|
$all_instances = $this->get_settings();
|
|
|
|
if ( -1 === $widget_args['number'] ) {
|
|
// We echo out a form where 'number' can be set later.
|
|
$this->_set( '__i__' );
|
|
$instance = array();
|
|
} else {
|
|
$this->_set( $widget_args['number'] );
|
|
$instance = $all_instances[ $widget_args['number'] ];
|
|
}
|
|
|
|
/**
|
|
* Filters the widget instance's settings before displaying the control form.
|
|
*
|
|
* Returning false effectively short-circuits display of the control form.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $instance The current widget instance's settings.
|
|
* @param WP_Widget $widget The current widget instance.
|
|
*/
|
|
$instance = apply_filters( 'widget_form_callback', $instance, $this );
|
|
|
|
$return = null;
|
|
|
|
if ( false !== $instance ) {
|
|
$return = $this->form( $instance );
|
|
|
|
/**
|
|
* Fires at the end of the widget control form.
|
|
*
|
|
* Use this hook to add extra fields to the widget form. The hook
|
|
* is only fired if the value passed to the 'widget_form_callback'
|
|
* hook is not false.
|
|
*
|
|
* Note: If the widget has no form, the text echoed from the default
|
|
* form method can be hidden using CSS.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param WP_Widget $widget The widget instance (passed by reference).
|
|
* @param null $return Return null if new fields are added.
|
|
* @param array $instance An array of the widget's settings.
|
|
*/
|
|
do_action_ref_array( 'in_widget_form', array( &$this, &$return, $instance ) );
|
|
}
|
|
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* Registers an instance of the widget class.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param int $number Optional. The unique order number of this widget instance
|
|
* compared to other instances of the same class. Default -1.
|
|
*/
|
|
public function _register_one( $number = -1 ) {
|
|
wp_register_sidebar_widget(
|
|
$this->id,
|
|
$this->name,
|
|
$this->_get_display_callback(),
|
|
$this->widget_options,
|
|
array( 'number' => $number )
|
|
);
|
|
|
|
_register_widget_update_callback(
|
|
$this->id_base,
|
|
$this->_get_update_callback(),
|
|
$this->control_options,
|
|
array( 'number' => -1 )
|
|
);
|
|
|
|
_register_widget_form_callback(
|
|
$this->id,
|
|
$this->name,
|
|
$this->_get_form_callback(),
|
|
$this->control_options,
|
|
array( 'number' => $number )
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Saves the settings for all instances of the widget class.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @param array $settings Multi-dimensional array of widget instance settings.
|
|
*/
|
|
public function save_settings( $settings ) {
|
|
$settings['_multiwidget'] = 1;
|
|
update_option( $this->option_name, $settings );
|
|
}
|
|
|
|
/**
|
|
* Retrieves the settings for all instances of the widget class.
|
|
*
|
|
* @since 2.8.0
|
|
*
|
|
* @return array Multi-dimensional array of widget instance settings.
|
|
*/
|
|
public function get_settings() {
|
|
|
|
$settings = get_option( $this->option_name );
|
|
|
|
if ( false === $settings ) {
|
|
$settings = array();
|
|
if ( isset( $this->alt_option_name ) ) {
|
|
// Get settings from alternative (legacy) option.
|
|
$settings = get_option( $this->alt_option_name, array() );
|
|
|
|
// Delete the alternative (legacy) option as the new option will be created using `$this->option_name`.
|
|
delete_option( $this->alt_option_name );
|
|
}
|
|
// Save an option so it can be autoloaded next time.
|
|
$this->save_settings( $settings );
|
|
}
|
|
|
|
if ( ! is_array( $settings ) && ! ( $settings instanceof ArrayObject || $settings instanceof ArrayIterator ) ) {
|
|
$settings = array();
|
|
}
|
|
|
|
if ( ! empty( $settings ) && ! isset( $settings['_multiwidget'] ) ) {
|
|
// Old format, convert if single widget.
|
|
$settings = wp_convert_widget_settings( $this->id_base, $this->option_name, $settings );
|
|
}
|
|
|
|
unset( $settings['_multiwidget'], $settings['__i__'] );
|
|
|
|
return $settings;
|
|
}
|
|
}
|