class WP_Customize_Control {
/**
* Incremented with each new class instantiation, then stored in $instance_number.
*
* Used when sorting two instances whose priorities are equal.
*
* @since 4.1.0
* @var int
*/
protected static $instance_count = 0;
/**
* Order in which this instance was created in relation to other instances.
*
* @since 4.1.0
* @var int
*/
public $instance_number;
/**
* Customizer manager.
*
* @since 3.4.0
* @var WP_Customize_Manager
*/
public $manager;
/**
* Control ID.
*
* @since 3.4.0
* @var string
*/
public $id;
/**
* All settings tied to the control.
*
* @since 3.4.0
* @var array
*/
public $settings;
/**
* The primary setting for the control (if there is one).
*
* @since 3.4.0
* @var string|WP_Customize_Setting|null
*/
public $setting = 'default';
/**
* Capability required to use this control.
*
* Normally this is empty and the capability is derived from the capabilities
* of the associated `$settings`.
*
* @since 4.5.0
* @var string
*/
public $capability;
/**
* Order priority to load the control in Customizer.
*
* @since 3.4.0
* @var int
*/
public $priority = 10;
/**
* Section the control belongs to.
*
* @since 3.4.0
* @var string
*/
public $section = '';
/**
* Label for the control.
*
* @since 3.4.0
* @var string
*/
public $label = '';
/**
* Description for the control.
*
* @since 4.0.0
* @var string
*/
public $description = '';
/**
* List of choices for 'radio' or 'select' type controls, where values are the keys, and labels are the values.
*
* @since 3.4.0
* @var array
*/
public $choices = array();
/**
* List of custom input attributes for control output, where attribute names are the keys and values are the values.
*
* Not used for 'checkbox', 'radio', 'select', 'textarea', or 'dropdown-pages' control types.
*
* @since 4.0.0
* @var array
*/
public $input_attrs = array();
/**
* Show UI for adding new content, currently only used for the dropdown-pages control.
*
* @since 4.7.0
* @var bool
*/
public $allow_addition = false;
/**
* @deprecated It is better to just call the json() method
* @since 3.4.0
* @var array
*/
public $json = array();
/**
* Control's Type.
*
* @since 3.4.0
* @var string
*/
public $type = 'text';
/**
* Callback.
*
* @since 4.0.0
*
* @see WP_Customize_Control::active()
*
* @var callable Callback is called with one argument, the instance of
* WP_Customize_Control, and returns bool to indicate whether
* the control is active (such as it relates to the URL
* currently being previewed).
*/
public $active_callback = '';
/**
* Constructor.
*
* Supplied `$args` override class property defaults.
*
* If `$args['settings']` is not defined, use the `$id` as the setting ID.
*
* @since 3.4.0
*
* @param WP_Customize_Manager $manager Customizer bootstrap instance.
* @param string $id Control ID.
* @param array $args {
* Optional. Array of properties for the new Control object. Default empty array.
*
* @type int $instance_number Order in which this instance was created in relation
* to other instances.
* @type WP_Customize_Manager $manager Customizer bootstrap instance.
* @type string $id Control ID.
* @type array $settings All settings tied to the control. If undefined, `$id` will
* be used.
* @type string $setting The primary setting for the control (if there is one).
* Default 'default'.
* @type string $capability Capability required to use this control. Normally this is empty
* and the capability is derived from `$settings`.
* @type int $priority Order priority to load the control. Default 10.
* @type string $section Section the control belongs to. Default empty.
* @type string $label Label for the control. Default empty.
* @type string $description Description for the control. Default empty.
* @type array $choices List of choices for 'radio' or 'select' type controls, where
* values are the keys, and labels are the values.
* Default empty array.
* @type array $input_attrs List of custom input attributes for control output, where
* attribute names are the keys and values are the values. Not
* used for 'checkbox', 'radio', 'select', 'textarea', or
* 'dropdown-pages' control types. Default empty array.
* @type bool $allow_addition Show UI for adding new content, currently only used for the
* dropdown-pages control. Default false.
* @type array $json Deprecated. Use WP_Customize_Control::json() instead.
* @type string $type Control type. Core controls include 'text', 'checkbox',
* 'textarea', 'radio', 'select', and 'dropdown-pages'. Additional
* input types such as 'email', 'url', 'number', 'hidden', and
* 'date' are supported implicitly. Default 'text'.
* @type callable $active_callback Active callback.
* }
*/
public function __construct( $manager, $id, $args = array() ) {
$keys = array_keys( get_object_vars( $this ) );
foreach ( $keys as $key ) {
if ( isset( $args[ $key ] ) ) {
$this->$key = $args[ $key ];
}
}
$this->manager = $manager;
$this->id = $id;
if ( empty( $this->active_callback ) ) {
$this->active_callback = array( $this, 'active_callback' );
}
self::$instance_count += 1;
$this->instance_number = self::$instance_count;
// Process settings.
if ( ! isset( $this->settings ) ) {
$this->settings = $id;
}
$settings = array();
if ( is_array( $this->settings ) ) {
foreach ( $this->settings as $key => $setting ) {
$settings[ $key ] = $this->manager->get_setting( $setting );
}
} elseif ( is_string( $this->settings ) ) {
$this->setting = $this->manager->get_setting( $this->settings );
$settings['default'] = $this->setting;
}
$this->settings = $settings;
}
/**
* Enqueue control related scripts/styles.
*
* @since 3.4.0
*/
public function enqueue() {}
/**
* Check whether control is active to current Customizer preview.
*
* @since 4.0.0
*
* @return bool Whether the control is active to the current preview.
*/
final public function active() {
$control = $this;
$active = call_user_func( $this->active_callback, $this );
/**
* Filters response of WP_Customize_Control::active().
*
* @since 4.0.0
*
* @param bool $active Whether the Customizer control is active.
* @param WP_Customize_Control $control WP_Customize_Control instance.
*/
$active = apply_filters( 'customize_control_active', $active, $control );
return $active;
}
/**
* Default callback used when invoking WP_Customize_Control::active().
*
* Subclasses can override this with their specific logic, or they may
* provide an 'active_callback' argument to the constructor.
*
* @since 4.0.0
*
* @return true Always true.
*/
public function active_callback() {
return true;
}
/**
* Fetch a setting's value.
* Grabs the main setting by default.
*
* @since 3.4.0
*
* @param string $setting_key
* @return mixed The requested setting's value, if the setting exists.
*/
final public function value( $setting_key = 'default' ) {
if ( isset( $this->settings[ $setting_key ] ) ) {
return $this->settings[ $setting_key ]->value();
}
}
/**
* Refresh the parameters passed to the JavaScript via JSON.
*
* @since 3.4.0
*/
public function to_json() {
$this->json['settings'] = array();
foreach ( $this->settings as $key => $setting ) {
$this->json['settings'][ $key ] = $setting->id;
}
$this->json['type'] = $this->type;
$this->json['priority'] = $this->priority;
$this->json['active'] = $this->active();
$this->json['section'] = $this->section;
$this->json['content'] = $this->get_content();
$this->json['label'] = $this->label;
$this->json['description'] = $this->description;
$this->json['instanceNumber'] = $this->instance_number;
if ( 'dropdown-pages' === $this->type ) {
$this->json['allow_addition'] = $this->allow_addition;
}
}
/**
* Get the data to export to the client via JSON.
*
* @since 4.1.0
*
* @return array Array of parameters passed to the JavaScript.
*/
public function json() {
$this->to_json();
return $this->json;
}
/**
* Checks if the user can use this control.
*
* Returns false if the user cannot manipulate one of the associated settings,
* or if one of the associated settings does not exist. Also returns false if
* the associated section does not exist or if its capability check returns
* false.
*
* @since 3.4.0
*
* @return bool False if theme doesn't support the control or user doesn't have the required permissions, otherwise true.
*/
final public function check_capabilities() {
if ( ! empty( $this->capability ) && ! current_user_can( $this->capability ) ) {
return false;
}
foreach ( $this->settings as $setting ) {
if ( ! $setting || ! $setting->check_capabilities() ) {
return false;
}
}
$section = $this->manager->get_section( $this->section );
if ( isset( $section ) && ! $section->check_capabilities() ) {
return false;
}
return true;
}
/**
* Get the control's content for insertion into the Customizer pane.
*
* @since 4.1.0
*
* @return string Contents of the control.
*/
final public function get_content() {
ob_start();
$this->maybe_render();
return trim( ob_get_clean() );
}
/**
* Check capabilities and render the control.
*
* @since 3.4.0
* @uses WP_Customize_Control::render()
*/
final public function maybe_render() {
if ( ! $this->check_capabilities() ) {
return;
}
/**
* Fires just before the current Customizer control is rendered.
*
* @since 3.4.0
*
* @param WP_Customize_Control $control WP_Customize_Control instance.
*/
do_action( 'customize_render_control', $this );
/**
* Fires just before a specific Customizer control is rendered.
*
* The dynamic portion of the hook name, `$this->id`, refers to
* the control ID.
*
* @since 3.4.0
*
* @param WP_Customize_Control $control WP_Customize_Control instance.
*/
do_action( "customize_render_control_{$this->id}", $this );
$this->render();
}
/**
* Renders the control wrapper and calls $this->render_content() for the internals.
*
* @since 3.4.0
*/
protected function render() {
$id = 'customize-control-' . str_replace( array( '[', ']' ), array( '-', '' ), $this->id );
$class = 'customize-control customize-control-' . $this->type;
printf( '<li id="%s" class="%s">', esc_attr( $id ), esc_attr( $class ) );
$this->render_content();
echo '</li>';
}
/**
* Get the data link attribute for a setting.
*
* @since 3.4.0
* @since 4.9.0 Return a `data-customize-setting-key-link` attribute if a setting is not registered for the supplied setting key.
*
* @param string $setting_key
* @return string Data link parameter, a `data-customize-setting-link` attribute if the `$setting_key` refers to a pre-registered setting,
* and a `data-customize-setting-key-link` attribute if the setting is not yet registered.
*/
public function get_link( $setting_key = 'default' ) {
if ( isset( $this->settings[ $setting_key ] ) && $this->settings[ $setting_key ] instanceof WP_Customize_Setting ) {
return 'data-customize-setting-link="' . esc_attr( $this->settings[ $setting_key ]->id ) . '"';
} else {
return 'data-customize-setting-key-link="' . esc_attr( $setting_key ) . '"';
}
}
/**
* Render the data link attribute for the control's input element.
*
* @since 3.4.0
* @uses WP_Customize_Control::get_link()
*
* @param string $setting_key
*/
public function link( $setting_key = 'default' ) {
echo $this->get_link( $setting_key );
}
/**
* Render the custom attributes for the control's input element.
*
* @since 4.0.0
*/
public function input_attrs() {
foreach ( $this->input_attrs as $attr => $value ) {
echo $attr . '="' . esc_attr( $value ) . '" ';
}
}
/**
* Render the control's content.
*
* Allows the content to be overridden without having to rewrite the wrapper in `$this::render()`.
*
* Supports basic input types `text`, `checkbox`, `textarea`, `radio`, `select` and `dropdown-pages`.
* Additional input types such as `email`, `url`, `number`, `hidden` and `date` are supported implicitly.
*
* Control content can alternately be rendered in JS. See WP_Customize_Control::print_template().
*
* @since 3.4.0
*/
protected function render_content() {
$input_id = '_customize-input-' . $this->id;
$description_id = '_customize-description-' . $this->id;
$describedby_attr = ( ! empty( $this->description ) ) ? ' aria-describedby="' . esc_attr( $description_id ) . '" ' : '';
switch ( $this->type ) {
case 'checkbox':
?>
<span class="customize-inside-control-row">
<input
id="<?php echo esc_attr( $input_id ); ?>"
<?php echo $describedby_attr; ?>
type="checkbox"
value="<?php echo esc_attr( $this->value() ); ?>"
<?php $this->link(); ?>
<?php checked( $this->value() ); ?>
/>
<label for="<?php echo esc_attr( $input_id ); ?>"><?php echo esc_html( $this->label ); ?></label>
<?php if ( ! empty( $this->description ) ) : ?>
<span id="<?php echo esc_attr( $description_id ); ?>" class="description customize-control-description"><?php echo $this->description; ?></span>
<?php endif; ?>
</span>
<?php
break;
case 'radio':
if ( empty( $this->choices ) ) {
return;
}
$name = '_customize-radio-' . $this->id;
?>
<?php if ( ! empty( $this->label ) ) : ?>
<span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
<?php endif; ?>
<?php if ( ! empty( $this->description ) ) : ?>
<span id="<?php echo esc_attr( $description_id ); ?>" class="description customize-control-description"><?php echo $this->description; ?></span>
<?php endif; ?>
<?php foreach ( $this->choices as $value => $label ) : ?>
<span class="customize-inside-control-row">
<input
id="<?php echo esc_attr( $input_id . '-radio-' . $value ); ?>"
type="radio"
<?php echo $describedby_attr; ?>
value="<?php echo esc_attr( $value ); ?>"
name="<?php echo esc_attr( $name ); ?>"
<?php $this->link(); ?>
<?php checked( $this->value(), $value ); ?>
/>
<label for="<?php echo esc_attr( $input_id . '-radio-' . $value ); ?>"><?php echo esc_html( $label ); ?></label>
</span>
<?php endforeach; ?>
<?php
break;
case 'select':
if ( empty( $this->choices ) ) {
return;
}
?>
<?php if ( ! empty( $this->label ) ) : ?>
<label for="<?php echo esc_attr( $input_id ); ?>" class="customize-control-title"><?php echo esc_html( $this->label ); ?></label>
<?php endif; ?>
<?php if ( ! empty( $this->description ) ) : ?>
<span id="<?php echo esc_attr( $description_id ); ?>" class="description customize-control-description"><?php echo $this->description; ?></span>
<?php endif; ?>
<select id="<?php echo esc_attr( $input_id ); ?>" <?php echo $describedby_attr; ?> <?php $this->link(); ?>>
<?php
foreach ( $this->choices as $value => $label ) {
echo '<option value="' . esc_attr( $value ) . '"' . selected( $this->value(), $value, false ) . '>' . esc_html( $label ) . '</option>';
}
?>
</select>
<?php
break;
case 'textarea':
?>
<?php if ( ! empty( $this->label ) ) : ?>
<label for="<?php echo esc_attr( $input_id ); ?>" class="customize-control-title"><?php echo esc_html( $this->label ); ?></label>
<?php endif; ?>
<?php if ( ! empty( $this->description ) ) : ?>
<span id="<?php echo esc_attr( $description_id ); ?>" class="description customize-control-description"><?php echo $this->description; ?></span>
<?php endif; ?>
<textarea
id="<?php echo esc_attr( $input_id ); ?>"
rows="5"
<?php echo $describedby_attr; ?>
<?php $this->input_attrs(); ?>
<?php $this->link(); ?>
><?php echo esc_textarea( $this->value() ); ?></textarea>
<?php
break;
case 'dropdown-pages':
?>
<?php if ( ! empty( $this->label ) ) : ?>
<label for="<?php echo esc_attr( $input_id ); ?>" class="customize-control-title"><?php echo esc_html( $this->label ); ?></label>
<?php endif; ?>
<?php if ( ! empty( $this->description ) ) : ?>
<span id="<?php echo esc_attr( $description_id ); ?>" class="description customize-control-description"><?php echo $this->description; ?></span>
<?php endif; ?>
<?php
$dropdown_name = '_customize-dropdown-pages-' . $this->id;
$show_option_none = __( '— Select —' );
$option_none_value = '0';
$dropdown = wp_dropdown_pages(
array(
'name' => $dropdown_name,
'echo' => 0,
'show_option_none' => $show_option_none,
'option_none_value' => $option_none_value,
'selected' => $this->value(),
)
);
if ( empty( $dropdown ) ) {
$dropdown = sprintf( '<select id="%1$s" name="%1$s">', esc_attr( $dropdown_name ) );
$dropdown .= sprintf( '<option value="%1$s">%2$s</option>', esc_attr( $option_none_value ), esc_html( $show_option_none ) );
$dropdown .= '</select>';
}
// Hackily add in the data link parameter.
$dropdown = str_replace( '<select', '<select ' . $this->get_link() . ' id="' . esc_attr( $input_id ) . '" ' . $describedby_attr, $dropdown );
/*
* Even more hacikly add auto-draft page stubs.
* @todo Eventually this should be removed in favor of the pages being injected into the underlying get_pages() call.
* See <https://github.com/xwp/wp-customize-posts/pull/250>.
*/
$nav_menus_created_posts_setting = $this->manager->get_setting( 'nav_menus_created_posts' );
if ( $nav_menus_created_posts_setting && current_user_can( 'publish_pages' ) ) {
$auto_draft_page_options = '';
foreach ( $nav_menus_created_posts_setting->value() as $auto_draft_page_id ) {
$post = get_post( $auto_draft_page_id );
if ( $post && 'page' === $post->post_type ) {
$auto_draft_page_options .= sprintf( '<option value="%1$s">%2$s</option>', esc_attr( $post->ID ), esc_html( $post->post_title ) );
}
}
if ( $auto_draft_page_options ) {
$dropdown = str_replace( '</select>', $auto_draft_page_options . '</select>', $dropdown );
}
}
echo $dropdown;
?>
<?php if ( $this->allow_addition && current_user_can( 'publish_pages' ) && current_user_can( 'edit_theme_options' ) ) : // Currently tied to menus functionality. ?>
<button type="button" class="button-link add-new-toggle">
<?php
/* translators: %s: Add New Page label. */
printf( __( '+ %s' ), get_post_type_object( 'page' )->labels->add_new_item );
?>
</button>
<div class="new-content-item">
<label for="create-input-<?php echo esc_attr( $this->id ); ?>"><span class="screen-reader-text">
<?php
/* translators: Hidden accessibility text. */
_e( 'New page title' );
?>
</span></label>
<input type="text" id="create-input-<?php echo esc_attr( $this->id ); ?>" class="create-item-input" placeholder="<?php esc_attr_e( 'New page title…' ); ?>">
<button type="button" class="button add-content"><?php _e( 'Add' ); ?></button>
</div>
<?php endif; ?>
<?php
break;
default:
?>
<?php if ( ! empty( $this->label ) ) : ?>
<label for="<?php echo esc_attr( $input_id ); ?>" class="customize-control-title"><?php echo esc_html( $this->label ); ?></label>
<?php endif; ?>
<?php if ( ! empty( $this->description ) ) : ?>
<span id="<?php echo esc_attr( $description_id ); ?>" class="description customize-control-description"><?php echo $this->description; ?></span>
<?php endif; ?>
<input
id="<?php echo esc_attr( $input_id ); ?>"
type="<?php echo esc_attr( $this->type ); ?>"
<?php echo $describedby_attr; ?>
<?php $this->input_attrs(); ?>
<?php if ( ! isset( $this->input_attrs['value'] ) ) : ?>
value="<?php echo esc_attr( $this->value() ); ?>"
<?php endif; ?>
<?php $this->link(); ?>
/>
<?php
break;
}
}
/**
* Render the control's JS template.
*
* This function is only run for control types that have been registered with
* WP_Customize_Manager::register_control_type().
*
* In the future, this will also print the template for the control's container
* element and be override-able.
*
* @since 4.1.0
*/
final public function print_template() {
?>
<script type="text/html" id="tmpl-customize-control-<?php echo esc_attr( $this->type ); ?>-content">
<?php $this->content_template(); ?>
</script>
<?php
}
/**
* An Underscore (JS) template for this control's content (but not its container).
*
* Class variables for this control class are available in the `data` JS object;
* export custom variables by overriding WP_Customize_Control::to_json().
*
* @see WP_Customize_Control::print_template()
*
* @since 4.1.0
*/
protected function content_template() {}
}
View all references View on Trac View on GitHub
Basic usage Example
Basic usage of WP_Customize_Control