' . __('There are no options for this widget.') . '';
}
// Functions you'll need to call.
/**
* PHP4 constructor
*/
function WP_Widget( $id_base, $name, $widget_options = array(), $control_options = array() ) {
$this->__construct( $id_base, $name, $widget_options, $control_options );
}
/**
* PHP5 constructor
* widget_options: passed to wp_register_sidebar_widget()
* - description
* - classname
* control_options: passed to wp_register_widget_control()
* - width
* - height
*/
function __construct( $id_base, $name, $widget_options = array(), $control_options = array() ) {
$this->id_base = $id_base;
$this->name = $name;
$this->option_name = 'widget_' . $id_base;
$this->widget_options = wp_parse_args( $widget_options, array('classname' => $this->option_name) );
$this->control_options = wp_parse_args( $control_options, array('id_base' => $this->id_base) );
add_action( 'widgets_init', array( &$this, 'register' ) );
}
/** Helper function to be called by form().
* Returns an HTML name for the field. */
function get_field_name($field_name) {
return 'widget-' . $this->id_base . '[' . $this->number . '][' . $field_name . ']';
}
/** Helper function to be called by form().
* Returns an HTML id for the field. */
function get_field_id($field_name) {
return 'widget-' . $this->id_base . '-' . $this->number . '-' . $field_name;
}
/** Registers this widget-type.
* Called during the 'widgets_init' action. */
function register() {
$settings = $this->get_settings();
if ( empty($settings) ) {
// If there are none, we register the widget's existance with a
// generic template
$this->_set(1);
$this->_register_one();
} elseif ( is_array($settings) ) {
foreach ( array_keys($settings) as $number ) {
if ( is_numeric($number) ) {
$this->_set($number);
$this->_register_one($number);
}
}
}
}
// Private Functions. Don't worry about these.
function _set($number) {
$this->number = $number;
$this->id = $this->id_base . '-' . $number;
}
function _get_display_callback() {
return array(&$this, 'display_callback');
}
function _get_control_callback() {
return array(&$this, 'control_callback');
}
/** Generate the actual widget content.
* Just finds the instance and calls widget().
* Do NOT over-ride this function. */
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'] );
$settings = $this->get_settings();
if ( array_key_exists( $this->number, $settings ) )
$this->widget($args, $settings[$this->number]);
}
/** Deal with changed settings and generate the control form.
* Do NOT over-ride this function. */
function control_callback( $widget_args = 1 ) {
global $wp_registered_widgets;
if ( is_numeric($widget_args) )
$widget_args = array( 'number' => $widget_args );
$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
$all_instances = $this->get_settings();
// We need to update the data
if ( !$this->updated && !empty($_POST['sidebar']) ) {
// Tells us what sidebar to put the data in
$sidebar = (string) $_POST['sidebar'];
$sidebars_widgets = wp_get_sidebars_widgets();
if ( isset($sidebars_widgets[$sidebar]) )
$this_sidebar =& $sidebars_widgets[$sidebar];
else
$this_sidebar = array();
foreach ( $this_sidebar as $_widget_id ) {
// Remove all widgets of this type from the sidebar. We'll add the
// new data in a second. This makes sure we don't get any duplicate
// data since widget ids aren't necessarily persistent across multiple
// updates
if ( $this->_get_display_callback() == $wp_registered_widgets[$_widget_id]['callback'] && isset($wp_registered_widgets[$_widget_id]['params'][0]['number']) ) {
$number = $wp_registered_widgets[$_widget_id]['params'][0]['number'];
if( !in_array( $this->id_base . '-' . $number, (array)$_POST['widget-id'] ) ) {
// the widget has been removed.
unset($all_instances[$number]);
}
}
}
foreach( (array) $_POST['widget-' . $this->id_base] as $number => $new_instance ) {
$new_instance = stripslashes_deep($new_instance);
$this->_set($number);
if ( isset($all_instances[$number]) )
$instance = $this->update($new_instance, $all_instances[$number]);
else
$instance = $this->update($new_instance, array());
if ( !empty($instance) )
$all_instances[$number] = $instance;
}
$this->save_settings($all_instances);
$this->updated = true;
}
// Here we echo out the form
if ( -1 == $widget_args['number'] ) {
// We echo out a form where 'number' can be set later via JS
$this->_set('%i%');
$instance = array();
} else {
$this->_set($widget_args['number']);
$instance = $all_instances[ $widget_args['number'] ];
}
$this->form($instance);
}
/** Helper function: Registers a single instance. */
function _register_one($number = -1) {
wp_register_sidebar_widget( $this->id, $this->name, $this->_get_display_callback(), $this->widget_options, array( 'number' => $number ) );
wp_register_widget_control( $this->id, $this->name, $this->_get_control_callback(), $this->control_options, array( 'number' => $number ) );
}
function save_settings($settings) {
$settings['_multiwidget'] = 1;
update_option( $this->option_name, $settings );
}
function get_settings() {
$settings = get_option($this->option_name);
if ( !is_array($settings) )
$settings = array();
if ( !array_key_exists('_multiwidget', $settings) ) {
// old format, conver if single widget
$settings = wp_convert_widget_settings($this->id_base, $this->option_name, $settings);
}
unset($settings['_multiwidget']);
return $settings;
}
}
/* Template tags & API functions */
/**
* Creates multiple sidebars.
*
* If you wanted to quickly create multiple sidebars for a theme or internally.
* This function will allow you to do so. If you don't pass the 'name' and/or
* 'id' in $args, then they will be built for you.
*
* The default for the name is "Sidebar #", with '#' being replaced with the
* number the sidebar is currently when greater than one. If first sidebar, the
* name will be just "Sidebar". The default for id is "sidebar-" followed by the
* number the sidebar creation is currently at.
*
* @since 2.2.0
*
* @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']) ? $args['name'] : __('Sidebar');
}
if (isset($args['id'])) {
$_args['id'] = $args['id'];
} else {
$n = count($wp_registered_sidebars);
do {
$n++;
$_args['id'] = "sidebar-$n";
} while (isset($wp_registered_sidebars[$_args['id']]));
}
register_sidebar($_args);
}
}
/**
* Builds the definition for a single sidebar and returns the ID.
*
* The $args parameter takes either a string or an array with 'name' and 'id'
* contained in either usage. It will be noted that the values will be applied
* to all sidebars, so if creating more than one, it will be advised to allow
* for WordPress to create the defaults for you.
*
* Example for string would be 'name=whatever;id=whatever1' and for
* the array it would be array(
* 'name' => 'whatever',
* 'id' => 'whatever1').
*
* name - The name of the sidebar, which presumably the title which will be
* displayed.
* id - The unique identifier by which the sidebar will be called by.
* before_widget - The content that will prepended to the widgets when they are
* displayed.
* after_widget - The content that will be appended to the widgets when they are
* displayed.
* before_title - The content that will be prepended to the title when displayed.
* after_title - the content that will be appended to the title when displayed.
*
* Content is assumed to be HTML and should be formatted as such, but
* doesn't have to be.
*
* @since 2.2.0
* @uses $wp_registered_sidebars Stores the new sidebar in this array by sidebar ID.
* @uses parse_str() Converts a string to an array to be used in the rest of the function.
* @usedby register_sidebars()
*
* @param string|array $args Builds Sidebar based off of 'name' and 'id' values
* @return string The sidebar id that was added.
*/
function register_sidebar($args = array()) {
global $wp_registered_sidebars;
if ( is_string($args) )
parse_str($args, $args);
$i = count($wp_registered_sidebars) + 1;
$defaults = array(
'name' => sprintf(__('Sidebar %d'), $i ),
'id' => "sidebar-$i",
'before_widget' => '
',
'after_widget' => "
\n",
'before_title' => '
',
'after_title' => "
\n",
);
$sidebar = array_merge($defaults, (array) $args);
$wp_registered_sidebars[$sidebar['id']] = $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 sidebar with backwards compatibility.
*
* Allows $name to be an array that accepts either three elements to grab the
* first element and the third for the name or just uses the first element of
* the array for the name.
*
* Passes to {@link wp_register_sidebar_widget()} after argument list and
* backwards compatibility is complete.
*
* @since 2.2.0
* @uses wp_register_sidebar_widget() Passes the compiled arguments.
*
* @param string|int $name Widget ID.
* @param callback $output_callback Run when widget is called.
* @param string $classname Classname widget option.
* @param mixed $params,... Widget parameters.
*/
function register_sidebar_widget($name, $output_callback, $classname = '') {
// Compat
if ( is_array($name) ) {
if ( count($name) == 3 )
$name = sprintf($name[0], $name[2]);
else
$name = $name[0];
}
$id = sanitize_title($name);
$options = array();
if ( !empty($classname) && is_string($classname) )
$options['classname'] = $classname;
$params = array_slice(func_get_args(), 2);
$args = array($id, $name, $output_callback, $options);
if ( !empty($params) )
$args = array_merge($args, $params);
call_user_func_array('wp_register_sidebar_widget', $args);
}
/**
* 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 Optional. $options 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;
$id = strtolower($id);
if ( empty($output_callback) ) {
unset($wp_registered_widgets[$id]);
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' ) ) )
$wp_registered_widgets[$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 wp_specialchars( $wp_registered_widgets[$id]['description'] );
}
/**
* Alias of {@link wp_unregister_sidebar_widget()}.
*
* @see wp_unregister_sidebar_widget()
*
* @since 2.2.0
*
* @param int|string $id Widget ID.
*/
function unregister_sidebar_widget($id) {
return wp_unregister_sidebar_widget($id);
}
/**
* Remove widget from sidebar.
*
* @since 2.2.0
*
* @param int|string $id Widget ID.
*/
function wp_unregister_sidebar_widget($id) {
wp_register_sidebar_widget($id, '', '');
wp_unregister_widget_control($id);
}
/**
* Registers widget control callback for customizing options.
*
* Allows $name to be an array that accepts either three elements to grab the
* first element and the third for the name or just uses the first element of
* the array for the name.
*
* Passes to {@link wp_register_widget_control()} after the argument list has
* been compiled.
*
* @since 2.2.0
*
* @param int|string $name Sidebar ID.
* @param callback $control_callback Widget control callback to display and process form.
* @param int $width Widget width.
* @param int $height Widget height.
*/
function register_widget_control($name, $control_callback, $width = '', $height = '') {
// Compat
if ( is_array($name) ) {
if ( count($name) == 3 )
$name = sprintf($name[0], $name[2]);
else
$name = $name[0];
}
$id = sanitize_title($name);
$options = array();
if ( !empty($width) )
$options['width'] = $width;
if ( !empty($height) )
$options['height'] = $height;
$params = array_slice(func_get_args(), 4);
$args = array($id, $name, $control_callback, $options);
if ( !empty($params) )
$args = array_merge($args, $params);
call_user_func_array('wp_register_widget_control', $args);
}
/**
* Registers widget control callback for customizing options.
*
* The options contains the 'height', 'width', and 'id_base' keys. The 'height'
* option is never used. The 'width' option is the width of the fully expanded
* control form, but try hard to use the default width. The 'id_base' is for
* multi-widgets (widgets which allow multiple instances such as the text
* widget), an id_base must be provided. The widget id will end up looking like
* {$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;
$id = strtolower($id);
if ( empty($control_callback) ) {
unset($wp_registered_widget_controls[$id]);
return;
}
if ( isset($wp_registered_widget_controls[$id]) && !did_action( 'widgets_init' ) )
return;
$defaults = array('width' => 250, 'height' => 200 ); // 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;
}
/**
* Alias of {@link wp_unregister_widget_control()}.
*
* @since 2.2.0
* @see wp_unregister_widget_control()
*
* @param int|string $id Widget ID.
*/
function unregister_widget_control($id) {
return wp_unregister_widget_control($id);
}
/**
* 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;
}
}
}
$sidebars_widgets = wp_get_sidebars_widgets();
if ( empty($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 ) {
$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'];
if ( is_callable($callback) ) {
call_user_func_array($callback, $params);
$did_one = true;
}
}
return $did_one;
}
/**
* Whether widget is registered using callback with widget ID.
*
* 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 is found.
* With the $widget_id parameter, returns the ID of the sidebar in which the widget with that callback AND that ID is found.
*
* @since 2.2.0
*
* @param callback $callback Widget callback to check.
* @param int $widget_id Optional, but needed for checking. Widget ID.
/* @return mixed false if widget is not active or id of sidebar in which the widget is active.
*/
function is_active_widget($callback, $widget_id = false) {
global $wp_registered_widgets;
$sidebars_widgets = wp_get_sidebars_widgets(false);
if ( is_array($sidebars_widgets) ) foreach ( $sidebars_widgets as $sidebar => $widgets )
if ( is_array($widgets) ) foreach ( $widgets as $widget )
if ( isset($wp_registered_widgets[$widget]['callback']) && $wp_registered_widgets[$widget]['callback'] == $callback )
if ( !$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;
}
/* 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 $update Optional, default is true. Whether to save upgrade of widget array list.
* @return array Upgraded list of widgets to version 2 array format.
*/
function wp_get_sidebars_widgets($update = true) {
global $wp_registered_widgets, $wp_registered_sidebars;
$sidebars_widgets = get_option('sidebars_widgets', array());
$_sidebars_widgets = array();
if ( !isset($sidebars_widgets['array_version']) )
$sidebars_widgets['array_version'] = 1;
switch ( $sidebars_widgets['array_version'] ) {
case 1 :
foreach ( (array) $sidebars_widgets as $index => $sidebar )
if ( is_array($sidebar) )
foreach ( (array) $sidebar as $i => $name ) {
$id = strtolower($name);
if ( isset($wp_registered_widgets[$id]) ) {
$_sidebars_widgets[$index][$i] = $id;
continue;
}
$id = sanitize_title($name);
if ( isset($wp_registered_widgets[$id]) ) {
$_sidebars_widgets[$index][$i] = $id;
continue;
}
$found = false;
foreach ( $wp_registered_widgets as $widget_id => $widget ) {
if ( strtolower($widget['name']) == strtolower($name) ) {
$_sidebars_widgets[$index][$i] = $widget['id'];
$found = true;
break;
} elseif ( sanitize_title($widget['name']) == sanitize_title($name) ) {
$_sidebars_widgets[$index][$i] = $widget['id'];
$found = true;
break;
}
}
if ( $found )
continue;
unset($_sidebars_widgets[$index][$i]);
}
$_sidebars_widgets['array_version'] = 2;
$sidebars_widgets = $_sidebars_widgets;
unset($_sidebars_widgets);
case 2 :
$sidebars = array_keys( $wp_registered_sidebars );
if ( !empty( $sidebars ) ) {
// Move the known-good ones first
foreach ( (array) $sidebars as $id ) {
if ( array_key_exists( $id, $sidebars_widgets ) ) {
$_sidebars_widgets[$id] = $sidebars_widgets[$id];
unset($sidebars_widgets[$id], $sidebars[$id]);
}
}
// Assign to each unmatched registered sidebar the first available orphan
unset( $sidebars_widgets[ 'array_version' ] );
while ( ( $sidebar = array_shift( $sidebars ) ) && $widgets = array_shift( $sidebars_widgets ) )
$_sidebars_widgets[ $sidebar ] = $widgets;
$_sidebars_widgets['array_version'] = 3;
$sidebars_widgets = $_sidebars_widgets;
unset($_sidebars_widgets);
}
if ( $update )
update_option('sidebars_widgets', $sidebars_widgets);
}
if ( isset($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.
$single = false;
if ( empty($settings) ) {
$single = true;
} else {
foreach ( array_keys($settings) as $number ) {
if ( !is_numeric($number) ) {
$single = true;
break;
}
}
}
if ( $single ) {
$settings = array( 2 => $settings );
$sidebars_widgets = get_option('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";
break 2;
}
}
}
}
update_option('sidebars_widgets', $sidebars_widgets);
}
$settings['_multiwidget'] = 1;
update_option( $option_name, $settings );
return $settings;
}
/* Default Widgets */
/**
* Pages widget class
*
* @since 2.8.0
*/
class WP_Widget_Pages extends WP_Widget {
function WP_Widget_Pages() {
$widget_ops = array('classname' => 'widget_pages', 'description' => __( "Your blog's WordPress Pages") );
$this->WP_Widget('pages', __('Pages'), $widget_ops);
}
function widget( $args, $instance ) {
extract( $args );
$title = empty( $instance['title'] ) ? __( 'Pages' ) : apply_filters('widget_title', $instance['title']);
$sortby = empty( $instance['sortby'] ) ? 'menu_order' : $instance['sortby'];
$exclude = empty( $instance['exclude'] ) ? '' : $instance['exclude'];
if ( $sortby == 'menu_order' )
$sortby = 'menu_order, post_title';
$out = wp_list_pages( array('title_li' => '', 'echo' => 0, 'sort_column' => $sortby, 'exclude' => $exclude) );
if ( !empty( $out ) ) {
echo $before_widget;
echo $before_title . $title . $after_title;
?>
get_error_message();
} else {
$link = clean_url(strip_tags($rss->get_permalink()));
while ( stristr($link, 'http') != $link )
$link = substr($link, 1);
}
}
return compact( 'title', 'url', 'link', 'items', 'error', 'show_summary', 'show_author', 'show_date' );
}
/**
* Register RSS widget to allow multiple RSS widgets on startup.
*
* @since 2.2.0
*/
function wp_widget_rss_register() {
if ( !$options = get_option('widget_rss') )
$options = array();
$widget_ops = array('classname' => 'widget_rss', 'description' => __( 'Entries from any RSS or Atom feed' ));
$control_ops = array('width' => 400, 'height' => 200, 'id_base' => 'rss');
$name = __('RSS');
$id = false;
foreach ( (array) array_keys($options) as $o ) {
// Old widgets can have null values for some reason
if ( !isset($options[$o]['url']) || !isset($options[$o]['title']) || !isset($options[$o]['items']) )
continue;
$id = "rss-$o"; // Never never never translate an id
wp_register_sidebar_widget($id, $name, 'wp_widget_rss', $widget_ops, array( 'number' => $o ));
wp_register_widget_control($id, $name, 'wp_widget_rss_control', $control_ops, array( 'number' => $o ));
}
// If there are none, we register the widget's existance with a generic template
if ( !$id ) {
wp_register_sidebar_widget( 'rss-1', $name, 'wp_widget_rss', $widget_ops, array( 'number' => -1 ) );
wp_register_widget_control( 'rss-1', $name, 'wp_widget_rss_control', $control_ops, array( 'number' => -1 ) );
}
}
/**
* Display tag cloud widget.
*
* @since 2.3.0
*
* @param array $args Widget arguments.
*/
function wp_widget_tag_cloud($args) {
extract($args);
$options = get_option('widget_tag_cloud');
$title = empty($options['title']) ? __('Tags') : apply_filters('widget_title', $options['title']);
echo $before_widget;
echo $before_title . $title . $after_title;
wp_tag_cloud();
echo $after_widget;
}
/**
* Manage WordPress Tag Cloud widget options.
*
* Displays management form for changing the tag cloud widget title.
*
* @since 2.3.0
*/
function wp_widget_tag_cloud_control() {
$options = $newoptions = get_option('widget_tag_cloud');
if ( isset($_POST['tag-cloud-submit']) ) {
$newoptions['title'] = strip_tags(stripslashes($_POST['tag-cloud-title']));
}
if ( $options != $newoptions ) {
$options = $newoptions;
update_option('widget_tag_cloud', $options);
}
$title = attribute_escape( $options['title'] );
?>
'widget_calendar', 'description' => __( "A calendar of your blog's posts") );
wp_register_sidebar_widget('calendar', __('Calendar'), 'wp_widget_calendar', $widget_ops);
wp_register_widget_control('calendar', __('Calendar'), 'wp_widget_calendar_control' );
$widget_ops = array('classname' => 'widget_archive', 'description' => __( "A monthly archive of your blog's posts") );
wp_register_sidebar_widget('archives', __('Archives'), 'wp_widget_archives', $widget_ops);
wp_register_widget_control('archives', __('Archives'), 'wp_widget_archives_control' );
new WP_Widget_Links();
$widget_ops = array('classname' => 'widget_meta', 'description' => __( "Log in/out, admin, feed and WordPress links") );
wp_register_sidebar_widget('meta', __('Meta'), 'wp_widget_meta', $widget_ops);
wp_register_widget_control('meta', __('Meta'), 'wp_widget_meta_control' );
new WP_Widget_Search();
$widget_ops = array('classname' => 'widget_recent_entries', 'description' => __( "The most recent posts on your blog") );
wp_register_sidebar_widget('recent-posts', __('Recent Posts'), 'wp_widget_recent_entries', $widget_ops);
wp_register_widget_control('recent-posts', __('Recent Posts'), 'wp_widget_recent_entries_control' );
$widget_ops = array('classname' => 'widget_tag_cloud', 'description' => __( "Your most used tags in cloud format") );
wp_register_sidebar_widget('tag_cloud', __('Tag Cloud'), 'wp_widget_tag_cloud', $widget_ops);
wp_register_widget_control('tag_cloud', __('Tag Cloud'), 'wp_widget_tag_cloud_control' );
wp_widget_categories_register();
wp_widget_text_register();
wp_widget_rss_register();
wp_widget_recent_comments_register();
do_action('widgets_init');
}
add_action('init', 'wp_widgets_init', 1);
/*
* Pattern for multi-widget (allows multiple instances such as the text widget).
*
* Make sure to close the comments after copying.
/**
* Displays widget.
*
* Supports multiple widgets.
*
* @param array $args Widget arguments.
* @param array|int $widget_args Widget number. Which of the several widgets of this type do we mean.
* /
function widget_many( $args, $widget_args = 1 ) {
extract( $args, EXTR_SKIP );
if ( is_numeric($widget_args) )
$widget_args = array( 'number' => $widget_args );
$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
extract( $widget_args, EXTR_SKIP );
// Data should be stored as array: array( number => data for that instance of the widget, ... )
$options = get_option('widget_many');
if ( !isset($options[$number]) )
return;
echo $before_widget;
// Do stuff for this widget, drawing data from $options[$number]
echo $after_widget;
}
/**
* Displays form for a particular instance of the widget.
*
* Also updates the data after a POST submit.
*
* @param array|int $widget_args Widget number. Which of the several widgets of this type do we mean.
* /
function widget_many_control( $widget_args = 1 ) {
global $wp_registered_widgets;
static $updated = false; // Whether or not we have already updated the data after a POST submit
if ( is_numeric($widget_args) )
$widget_args = array( 'number' => $widget_args );
$widget_args = wp_parse_args( $widget_args, array( 'number' => -1 ) );
extract( $widget_args, EXTR_SKIP );
// Data should be stored as array: array( number => data for that instance of the widget, ... )
$options = get_option('widget_many');
if ( !is_array($options) )
$options = array();
// We need to update the data
if ( !$updated && !empty($_POST['sidebar']) ) {
// Tells us what sidebar to put the data in
$sidebar = (string) $_POST['sidebar'];
$sidebars_widgets = wp_get_sidebars_widgets();
if ( isset($sidebars_widgets[$sidebar]) )
$this_sidebar =& $sidebars_widgets[$sidebar];
else
$this_sidebar = array();
foreach ( $this_sidebar as $_widget_id ) {
// Remove all widgets of this type from the sidebar. We'll add the new data in a second. This makes sure we don't get any duplicate data
// since widget ids aren't necessarily persistent across multiple updates
if ( 'widget_many' == $wp_registered_widgets[$_widget_id]['callback'] && isset($wp_registered_widgets[$_widget_id]['params'][0]['number']) ) {
$widget_number = $wp_registered_widgets[$_widget_id]['params'][0]['number'];
if ( !in_array( "many-$widget_number", $_POST['widget-id'] ) ) // the widget has been removed. "many-$widget_number" is "{id_base}-{widget_number}
unset($options[$widget_number]);
}
}
foreach ( (array) $_POST['widget-many'] as $widget_number => $widget_many_instance ) {
// compile data from $widget_many_instance
if ( !isset($widget_many_instance['something']) && isset($options[$widget_number]) ) // user clicked cancel
continue;
$something = wp_specialchars( $widget_many_instance['something'] );
$options[$widget_number] = array( 'something' => $something ); // Even simple widgets should store stuff in array, rather than in scalar
}
update_option('widget_many', $options);
$updated = true; // So that we don't go through this more than once
}
// Here we echo out the form
if ( -1 == $number ) { // We echo out a template for a form which can be converted to a specific form later via JS
$something = '';
$number = '%i%';
} else {
$something = attribute_escape($options[$number]['something']);
}
// The form has inputs with names like widget-many[$number][something] so that all data for that instance of
// the widget are stored in one $_POST variable: $_POST['widget-many'][$number]
?>
'widget_many', 'description' => __('Widget which allows multiple instances'));
$control_ops = array('width' => 400, 'height' => 350, 'id_base' => 'many');
$name = __('Many');
$registered = false;
foreach ( array_keys($options) as $o ) {
// Old widgets can have null values for some reason
if ( !isset($options[$o]['something']) ) // we used 'something' above in our exampple. Replace with with whatever your real data are.
continue;
// $id should look like {$id_base}-{$o}
$id = "many-$o"; // Never never never translate an id
$registered = true;
wp_register_sidebar_widget( $id, $name, 'widget_many', $widget_ops, array( 'number' => $o ) );
wp_register_widget_control( $id, $name, 'widget_many_control', $control_ops, array( 'number' => $o ) );
}
// If there are none, we register the widget's existance with a generic template
if ( !$registered ) {
wp_register_sidebar_widget( 'many-1', $name, 'widget_many', $widget_ops, array( 'number' => -1 ) );
wp_register_widget_control( 'many-1', $name, 'widget_many_control', $control_ops, array( 'number' => -1 ) );
}
}
// This is important
add_action( 'widgets_init', 'widget_many_register' );
*/
?>