diff -r 2f6f6f7551ca -r 32102edaa81b web/wp-includes/class-wp-customize-setting.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-includes/class-wp-customize-setting.php	Mon Nov 19 18:26:13 2012 +0100
@@ -0,0 +1,409 @@
+<?php
+/**
+ * Customize Setting Class
+ *
+ * @package WordPress
+ * @subpackage Customize
+ * @since 3.4.0
+ */
+
+class WP_Customize_Setting {
+	public $manager;
+	public $id;
+
+	public $type            = 'theme_mod';
+	public $capability      = 'edit_theme_options';
+	public $theme_supports  = '';
+	public $default         = '';
+	public $transport       = 'refresh';
+
+	public $sanitize_callback    = '';
+	public $sanitize_js_callback = '';
+
+	protected $id_data = array();
+	private $_post_value; // Cached, sanitized $_POST value.
+
+	/**
+	 * 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( $manager, $id, $args = array() ) {
+		$keys = array_keys( get_class_vars( __CLASS__ ) );
+		foreach ( $keys as $key ) {
+			if ( isset( $args[ $key ] ) )
+				$this->$key = $args[ $key ];
+		}
+
+		$this->manager = $manager;
+		$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, 10, 2 );
+
+		if ( $this->sanitize_js_callback )
+			add_filter( "customize_sanitize_js_{$this->id}", $this->sanitize_js_callback, 10, 2 );
+
+		return $this;
+	}
+
+	/**
+	 * 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' ) );
+					add_filter( 'default_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;
+
+		$result = $this->manager->post_value( $this );
+
+		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, $this );
+	}
+
+	/**
+	 * 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 );
+	}
+
+	/**
+	 * Escape the parameter's value for use in JavaScript.
+	 *
+	 * @since 3.4.0
+	 *
+	 * @return mixed The requested escaped value.
+	 */
+	public function js_value() {
+		$value = apply_filters( "customize_sanitize_js_{$this->id}", $this->value(), $this );
+
+		if ( is_string( $value ) )
+			return html_entity_decode( $value, ENT_QUOTES, 'UTF-8');
+
+		return $value;
+	}
+
+	/**
+	 * 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() {
+		if ( $this->capability && ! call_user_func_array( 'current_user_can', (array) $this->capability ) )
+			return false;
+
+		if ( $this->theme_supports && ! call_user_func_array( 'current_theme_supports', (array) $this->theme_supports ) )
+			return false;
+
+		return true;
+	}
+
+	/**
+	 * 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 );
+	}
+}
+
+/**
+ * A setting that is used to filter a value, but will not save the results.
+ *
+ * Results should be properly handled using another setting or callback.
+ */
+class WP_Customize_Filter_Setting extends WP_Customize_Setting {
+	public function update() {}
+}
+
+/**
+ * A setting that is used to filter a value, but will not save the results.
+ *
+ * Results should be properly handled using another setting or callback.
+ */
+final class WP_Customize_Header_Image_Setting extends WP_Customize_Setting {
+	public $id = 'header_image_data';
+
+	public function update( $value ) {
+		global $custom_image_header;
+
+		// If the value doesn't exist (removed or random),
+		// use the header_image value.
+		if ( ! $value )
+			$value = $this->manager->get_setting('header_image')->post_value();
+
+		if ( is_array( $value ) && isset( $value['choice'] ) )
+			$custom_image_header->set_header_image( $value['choice'] );
+		else
+			$custom_image_header->set_header_image( $value );
+	}
+}
+
+final class WP_Customize_Background_Image_Setting extends WP_Customize_Setting {
+	public $id = 'background_image_thumb';
+
+	public function update( $value ) {
+		remove_theme_mod( 'background_image_thumb' );
+	}
+}