WordPress/wp-includes/class-wp-customize-setting.php

498 lines
12 KiB
PHP

<?php
/**
* Customize Setting Class
*
* @package WordPress
* @subpackage Customize
* @since 3.4.0
*/
class WP_Customize_Setting {
public $id;
public $priority = 10;
public $section = '';
public $label = '';
public $control = 'text';
public $type = 'theme_mod';
public $choices = array();
public $capability = 'edit_theme_options';
public $theme_supports = '';
public $default = '';
public $sanitize_callback = '';
protected $id_data = array();
private $_post_value; // Cached, sanitized $_POST value.
// Prefix for $_POST values to prevent naming conflicts.
const name_prefix = 'customize_';
/**
* Constructor.
*
* @since 3.4.0
*
* @param string $id An specific ID of the setting. Can be a
* theme mod or option name.
* @param array $args Setting arguments.
*/
function __construct( $id, $args = array() ) {
$keys = array_keys( get_class_vars( __CLASS__ ) );
foreach ( $keys as $key ) {
if ( isset( $args[ $key ] ) )
$this->$key = $args[ $key ];
}
$this->id = $id;
// Parse the ID for array keys.
$this->id_data[ 'keys' ] = preg_split( '/\[/', str_replace( ']', '', $this->id ) );
$this->id_data[ 'base' ] = array_shift( $this->id_data[ 'keys' ] );
// Rebuild the ID.
$this->id = $this->id_data[ 'base' ];
if ( ! empty( $this->id_data[ 'keys' ] ) )
$this->id .= '[' . implode( '][', $this->id_data[ 'keys' ] ) . ']';
if ( $this->sanitize_callback != '' )
add_filter( "customize_sanitize_{$this->id}", $this->sanitize_callback );
return $this;
}
/**
* Enqueue setting related scripts/styles.
*
* @since 3.4.0
*/
public function enqueue() {
switch( $this->control ) {
case 'color':
wp_enqueue_script( 'farbtastic' );
wp_enqueue_style( 'farbtastic' );
break;
}
}
/**
* Handle previewing the setting.
*
* @since 3.4.0
*/
public function preview() {
switch( $this->type ) {
case 'theme_mod' :
add_filter( 'theme_mod_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
break;
case 'option' :
if ( empty( $this->id_data[ 'keys' ] ) )
add_filter( 'pre_option_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
else
add_filter( 'option_' . $this->id_data[ 'base' ], array( $this, '_preview_filter' ) );
break;
default :
do_action( 'customize_preview_' . $this->id );
}
}
/**
* Callback function to filter the theme mods and options.
*
* @since 3.4.0
*
* @param mixed Old value.
* @return mixed New or old value.
*/
public function _preview_filter( $original ) {
return $this->multidimensional_replace( $original, $this->id_data[ 'keys' ], $this->post_value() );
}
/**
* Set the value of the parameter for a specific theme.
*
* @since 3.4.0
*
* @return bool False if cap check fails or value isn't set.
*/
public final function save() {
$value = $this->post_value();
if ( ! $this->check_capabilities() || ! isset( $value ) )
return false;
do_action( 'customize_save_' . $this->id_data[ 'base' ] );
$this->update( $value );
}
/**
* Fetches, validates, and sanitizes the $_POST value.
*
* @since 3.4.0
*
* @param $default mixed A default value which is used as a fallback. Default is null.
* @return mixed Either the default value on failure or sanitized value.
*/
public final function post_value( $default = null ) {
if ( isset( $this->_post_value ) )
return $this->_post_value;
$base = self::name_prefix . $this->id_data[ 'base' ];
if ( ! isset( $_POST[ $base ] ) )
return $default;
$result = $this->multidimensional_get( $_POST[ $base ], $this->id_data[ 'keys' ] );
if ( ! isset( $result ) )
return $default;
$result = $this->sanitize( $result );
if ( isset( $result ) )
return $this->_post_value = $result;
else
return $default;
}
/**
* Sanitize an input.
*
* @since 3.4.0
*
* @param $value mixed The value to sanitize.
* @return mixed Null if an input isn't valid, otherwise the sanitized value.
*/
public function sanitize( $value ) {
$value = stripslashes_deep( $value );
return apply_filters( "customize_sanitize_{$this->id}", $value );
}
/**
* Set the value of the parameter for a specific theme.
*
* @since 3.4.0
*
* @param $value mixed The value to update.
* @return mixed The result of saving the value.
*/
protected function update( $value ) {
switch( $this->type ) {
case 'theme_mod' :
return $this->_update_theme_mod( $value );
break;
case 'option' :
return $this->_update_option( $value );
break;
default :
return do_action( 'customize_update_' . $this->type, $value );
}
}
/**
* Update the theme mod from the value of the parameter.
*
* @since 3.4.0
*
* @param $value mixed The value to update.
* @return mixed The result of saving the value.
*/
protected function _update_theme_mod( $value ) {
// Handle non-array theme mod.
if ( empty( $this->id_data[ 'keys' ] ) )
return set_theme_mod( $this->id_data[ 'base' ], $value );
// Handle array-based theme mod.
$mods = get_theme_mod( $this->id_data[ 'base' ] );
$mods = $this->multidimensional_replace( $mods, $this->id_data[ 'keys' ], $value );
if ( isset( $mods ) )
return set_theme_mod( $this->id_data[ 'base' ], $mods );
}
/**
* Update the theme mod from the value of the parameter.
*
* @since 3.4.0
*
* @param $value mixed The value to update.
* @return mixed The result of saving the value.
*/
protected function _update_option( $value ) {
// Handle non-array option.
if ( empty( $this->id_data[ 'keys' ] ) )
return update_option( $this->id_data[ 'base' ], $value );
// Handle array-based options.
$options = get_option( $this->id_data[ 'base' ] );
$options = $this->multidimensional_replace( $options, $this->id_data[ 'keys' ], $value );
if ( isset( $options ) )
return update_option( $this->id_data[ 'base' ], $options );
}
/**
* Fetch the value of the parameter for a specific theme.
*
* @since 3.4.0
*
* @return mixed The requested value.
*/
public function value() {
switch( $this->type ) {
case 'theme_mod' :
$function = 'get_theme_mod';
break;
case 'option' :
$function = 'get_option';
break;
default :
return apply_filters( 'customize_value_' . $this->id_data[ 'base' ], $this->default );
}
// Handle non-array value
if ( empty( $this->id_data[ 'keys' ] ) )
return $function( $this->id_data[ 'base' ], $this->default );
// Handle array-based value
$values = $function( $this->id_data[ 'base' ] );
return $this->multidimensional_get( $values, $this->id_data[ 'keys' ], $this->default );
}
/**
* Check if the theme supports the setting and check user capabilities.
*
* @since 3.4.0
*
* @return bool False if theme doesn't support the setting or user can't change setting, otherwise true.
*/
public final function check_capabilities() {
global $customize;
if ( ! $this->capability || ! current_user_can( $this->capability ) )
return false;
if ( $this->theme_supports && ! current_theme_supports( $this->theme_supports ) )
return false;
$section = $customize->get_section( $this->section );
if ( isset( $section ) && ! $section->check_capabilities() )
return false;
return true;
}
/**
* Render the control.
*
* @since 3.4.0
*/
public final function _render() {
if ( ! $this->check_capabilities() )
return;
do_action( 'customize_render_' . $this->id );
$this->render();
}
/**
* Render the control.
*
* @since 3.4.0
*/
protected function render() {
$this->_render_type();
}
/**
* Retrieve the name attribute for an input.
*
* @since 3.4.0
*
* @return string The name.
*/
public final function get_name() {
return self::name_prefix . esc_attr( $this->id );
}
/**
* Echo the HTML name attribute for an input.
*
* @since 3.4.0
*
* @return string The HTML name attribute.
*/
public final function name() {
echo 'name="' . $this->get_name() . '"';
}
/**
* Render the control type.
*
* @todo Improve value and checked attributes.
*
* @since 3.4.0
*/
public final function _render_type() {
switch( $this->control ) {
case 'text':
?>
<label><?php echo esc_html( $this->label ); ?><br/>
<input type="text" value="<?php echo esc_attr( $this->value() ); ?>" <?php $this->name(); ?> />
</label>
<?php
break;
case 'color':
?>
<label>
<span><?php echo esc_html( $this->label ); ?></span>
<div class="color-picker">
<input type="hidden" value="<?php echo esc_attr( $this->value() ); ?>" <?php $this->name(); ?> />
<a href="#"></a>
<div class="color-picker-controls">
<div class="farbtastic-placeholder"></div>
<span>#</span>
<input type="text" />
</div>
</div>
</label>
<?php
break;
case 'checkbox':
?>
<label>
<input type="checkbox" value="<?php echo esc_attr( $this->value() ); ?>" <?php $this->name(); checked( $this->value() ); ?> />
<?php echo esc_html( $this->label ); ?>
</label>
<?php
break;
case 'radio':
if ( empty( $this->choices ) )
return;
echo esc_html( $this->label ) . '<br/>';
foreach ( $this->choices as $value => $label ) :
?>
<label>
<input type="radio" value="<?php echo esc_attr( $value ); ?>" <?php $this->name(); checked( $this->value(), $value ); ?> />
<?php echo esc_html( $label ); ?><br/>
</label>
<?php
endforeach;
break;
case 'select':
if ( empty( $this->choices ) )
return;
?>
<label><?php echo esc_html( $this->label ); ?><br/>
<select <?php $this->name(); ?>>
<?php
foreach ( $this->choices as $value => $label )
echo '<option value="' . esc_attr( $value ) . '"' . selected( $this->value(), $value, false ) . '>' . $label . '</option>';
?>
</select>
<?php
break;
default:
do_action( 'customize_render_control-' . $this->control, $this );
}
}
/**
* Multidimensional helper function.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param bool $create Default is false.
* @return null|array
*/
final protected function multidimensional( $root, $keys, $create = false ) {
if ( $create && empty( $root ) )
$root = array();
if ( ! isset( $root ) || empty( $keys ) )
return;
$last = array_pop( $keys );
$node = &$root;
foreach ( $keys as $key ) {
if ( $create && ! isset( $node[ $key ] ) )
$node[ $key ] = array();
if ( ! is_array( $node ) || ! isset( $node[ $key ] ) )
return;
$node = &$node[ $key ];
}
if ( $create && ! isset( $node[ $last ] ) )
$node[ $last ] = array();
if ( ! isset( $node[ $last ] ) )
return;
return array(
'root' => &$root,
'node' => &$node,
'key' => $last,
);
}
/**
* Will attempt to replace a specific value in a multidimensional array.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param mixed $value The value to update.
* @return
*/
final protected function multidimensional_replace( $root, $keys, $value ) {
if ( ! isset( $value ) )
return $root;
elseif ( empty( $keys ) ) // If there are no keys, we're replacing the root.
return $value;
$result = $this->multidimensional( &$root, $keys, true );
if ( isset( $result ) )
$result['node'][ $result['key'] ] = $value;
return $root;
}
/**
* Will attempt to fetch a specific value from a multidimensional array.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @param $default A default value which is used as a fallback. Default is null.
* @return mixed The requested value or the default value.
*/
final protected function multidimensional_get( $root, $keys, $default = null ) {
if ( empty( $keys ) ) // If there are no keys, test the root.
return isset( $root ) ? $root : $default;
$result = $this->multidimensional( $root, $keys );
return isset( $result ) ? $result['node'][ $result['key'] ] : $default;
}
/**
* Will attempt to check if a specific value in a multidimensional array is set.
*
* @since 3.4.0
*
* @param $root
* @param $keys
* @return bool True if value is set, false if not.
*/
final protected function multidimensional_isset( $root, $keys ) {
$result = $this->multidimensional_get( $root, $keys );
return isset( $result );
}
}