]> scripts.mit.edu Git - autoinstalls/wordpress.git/blobdiff - wp-includes/class-wp-customize-control.php
WordPress 4.2.4-scripts
[autoinstalls/wordpress.git] / wp-includes / class-wp-customize-control.php
index d24a5f2e7c4e7b6096a06e7aa1f3047834d9058f..bf17fb203f1a3558b4c7f52d3eac3fcac8efcb4a 100644 (file)
@@ -1,12 +1,39 @@
 <?php
 /**
- * Customize Control Class
+ * WordPress Customize Control classes
  *
  * @package WordPress
  * @subpackage Customize
  * @since 3.4.0
  */
+
+/**
+ * Customize Control class.
+ *
+ * @since 3.4.0
+ */
 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
+        * @access protected
+        * @var int
+        */
+       protected static $instance_count = 0;
+
+       /**
+        * Order in which this instance was created in relation to other instances.
+        *
+        * @since 4.1.0
+        * @access public
+        * @var int
+        */
+       public $instance_number;
+
        /**
         * @access public
         * @var WP_Customize_Manager
@@ -39,19 +66,25 @@ class WP_Customize_Control {
         * @access public
         * @var int
         */
-       public $priority          = 10;
+       public $priority = 10;
+
+       /**
+        * @access public
+        * @var string
+        */
+       public $section = '';
 
        /**
         * @access public
         * @var string
         */
-       public $section           = '';
+       public $label = '';
 
        /**
         * @access public
         * @var string
         */
-       public $label             = '';
+       public $description = '';
 
        /**
         * @todo: Remove choices
@@ -59,9 +92,16 @@ class WP_Customize_Control {
         * @access public
         * @var array
         */
-       public $choices           = array();
+       public $choices = array();
+
+       /**
+        * @access public
+        * @var array
+        */
+       public $input_attrs = array();
 
        /**
+        * @deprecated It is better to just call the json() method
         * @access public
         * @var array
         */
@@ -73,10 +113,26 @@ class WP_Customize_Control {
         */
        public $type = 'text';
 
+       /**
+        * Callback.
+        *
+        * @since 4.0.0
+        * @access public
+        *
+        * @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
@@ -85,20 +141,26 @@ class WP_Customize_Control {
         * @param string $id
         * @param array $args
         */
-       function __construct( $manager, $id, $args = array() ) {
+       public function __construct( $manager, $id, $args = array() ) {
                $keys = array_keys( get_object_vars( $this ) );
                foreach ( $keys as $key ) {
-                       if ( isset( $args[ $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 ( empty( $this->settings ) )
+               if ( empty( $this->settings ) ) {
                        $this->settings = $id;
+               }
 
                $settings = array();
                if ( is_array( $this->settings ) ) {
@@ -119,6 +181,45 @@ class WP_Customize_Control {
         */
        public function enqueue() {}
 
+       /**
+        * Check whether control is active to current Customizer preview.
+        *
+        * @since 4.0.0
+        * @access public
+        *
+        * @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 );
+
+               /**
+                * Filter 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
+        * @access public
+        *
+        * @return bool Always true.
+        */
+       public function active_callback() {
+               return true;
+       }
 
        /**
         * Fetch a setting's value.
@@ -129,9 +230,10 @@ class WP_Customize_Control {
         * @param string $setting_key
         * @return mixed The requested setting's value, if the setting exists.
         */
-       public final function value( $setting_key = 'default' ) {
-               if ( isset( $this->settings[ $setting_key ] ) )
+       final public function value( $setting_key = 'default' ) {
+               if ( isset( $this->settings[ $setting_key ] ) ) {
                        return $this->settings[ $setting_key ]->value();
+               }
        }
 
        /**
@@ -146,6 +248,25 @@ class WP_Customize_Control {
                }
 
                $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;
+       }
+
+       /**
+        * 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;
        }
 
        /**
@@ -155,7 +276,7 @@ class WP_Customize_Control {
         *
         * @return bool False if theme doesn't support the control or user doesn't have the required permissions, otherwise true.
         */
-       public final function check_capabilities() {
+       final public function check_capabilities() {
                foreach ( $this->settings as $setting ) {
                        if ( ! $setting->check_capabilities() )
                                return false;
@@ -168,24 +289,57 @@ class WP_Customize_Control {
                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();
+               $template = trim( ob_get_contents() );
+               ob_end_clean();
+               return $template;
+       }
+
        /**
         * Check capabilities and render the control.
         *
         * @since 3.4.0
         * @uses WP_Customize_Control::render()
         */
-       public final function maybe_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 $this 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 $this {@see WP_Customize_Control} instance.
+                */
                do_action( 'customize_render_control_' . $this->id, $this );
 
                $this->render();
        }
 
        /**
-        * Render the control. Renders the control wrapper, then calls $this->render_content().
+        * Renders the control wrapper and calls $this->render_content() for the internals.
         *
         * @since 3.4.0
         */
@@ -199,7 +353,7 @@ class WP_Customize_Control {
        }
 
        /**
-        * Get the data link parameter for a setting.
+        * Get the data link attribute for a setting.
         *
         * @since 3.4.0
         *
@@ -214,7 +368,7 @@ class WP_Customize_Control {
        }
 
        /**
-        * Render the data link parameter for a setting
+        * Render the data link attribute for the control's input element.
         *
         * @since 3.4.0
         * @uses WP_Customize_Control::get_link()
@@ -225,28 +379,40 @@ class WP_Customize_Control {
                echo $this->get_link( $setting_key );
        }
 
+       /**
+        * Render the custom attributes for the control's input element.
+        *
+        * @since 4.0.0
+        * @access public
+        */
+       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 overriden without having to rewrite the wrapper.
+        * Allows the content to be overriden 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 {@see WP_Customize_Control::print_template()}.
         *
         * @since 3.4.0
         */
        protected function render_content() {
                switch( $this->type ) {
-                       case 'text':
-                               ?>
-                               <label>
-                                       <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
-                                       <input type="text" value="<?php echo esc_attr( $this->value() ); ?>" <?php $this->link(); ?> />
-                               </label>
-                               <?php
-                               break;
                        case 'checkbox':
                                ?>
                                <label>
                                        <input type="checkbox" value="<?php echo esc_attr( $this->value() ); ?>" <?php $this->link(); checked( $this->value() ); ?> />
                                        <?php echo esc_html( $this->label ); ?>
+                                       <?php if ( ! empty( $this->description ) ) : ?>
+                                               <span class="description customize-control-description"><?php echo $this->description; ?></span>
+                                       <?php endif; ?>
                                </label>
                                <?php
                                break;
@@ -256,9 +422,13 @@ class WP_Customize_Control {
 
                                $name = '_customize-radio-' . $this->id;
 
-                               ?>
-                               <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
-                               <?php
+                               if ( ! empty( $this->label ) ) : ?>
+                                       <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
+                               <?php endif;
+                               if ( ! empty( $this->description ) ) : ?>
+                                       <span class="description customize-control-description"><?php echo $this->description ; ?></span>
+                               <?php endif;
+
                                foreach ( $this->choices as $value => $label ) :
                                        ?>
                                        <label>
@@ -274,7 +444,13 @@ class WP_Customize_Control {
 
                                ?>
                                <label>
-                                       <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
+                                       <?php if ( ! empty( $this->label ) ) : ?>
+                                               <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
+                                       <?php endif;
+                                       if ( ! empty( $this->description ) ) : ?>
+                                               <span class="description customize-control-description"><?php echo $this->description; ?></span>
+                                       <?php endif; ?>
+
                                        <select <?php $this->link(); ?>>
                                                <?php
                                                foreach ( $this->choices as $value => $label )
@@ -284,6 +460,19 @@ class WP_Customize_Control {
                                </label>
                                <?php
                                break;
+                       case 'textarea':
+                               ?>
+                               <label>
+                                       <?php if ( ! empty( $this->label ) ) : ?>
+                                               <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
+                                       <?php endif;
+                                       if ( ! empty( $this->description ) ) : ?>
+                                               <span class="description customize-control-description"><?php echo $this->description; ?></span>
+                                       <?php endif; ?>
+                                       <textarea rows="5" <?php $this->link(); ?>><?php echo esc_textarea( $this->value() ); ?></textarea>
+                               </label>
+                               <?php
+                               break;
                        case 'dropdown-pages':
                                $dropdown = wp_dropdown_pages(
                                        array(
@@ -304,16 +493,61 @@ class WP_Customize_Control {
                                        $dropdown
                                );
                                break;
+                       default:
+                               ?>
+                               <label>
+                                       <?php if ( ! empty( $this->label ) ) : ?>
+                                               <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
+                                       <?php endif;
+                                       if ( ! empty( $this->description ) ) : ?>
+                                               <span class="description customize-control-description"><?php echo $this->description; ?></span>
+                                       <?php endif; ?>
+                                       <input type="<?php echo esc_attr( $this->type ); ?>" <?php $this->input_attrs(); ?> value="<?php echo esc_attr( $this->value() ); ?>" <?php $this->link(); ?> />
+                               </label>
+                               <?php
+                               break;
                }
        }
+
+       /**
+        * Render the control's JS template.
+        *
+        * This function is only run for control types that have been registered with
+        * {@see 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 $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 {@see WP_Customize_Control::to_json()}.
+        *
+        * @see WP_Customize_Control::print_template()
+        *
+        * @since 4.1.0
+        */
+       protected function content_template() {}
+
 }
 
 /**
- * Customize Color Control Class
+ * Customize Color Control class.
  *
- * @package WordPress
- * @subpackage Customize
  * @since 3.4.0
+ *
+ * @see WP_Customize_Control
  */
 class WP_Customize_Color_Control extends WP_Customize_Control {
        /**
@@ -331,8 +565,6 @@ class WP_Customize_Color_Control extends WP_Customize_Control {
        /**
         * Constructor.
         *
-        * If $args['settings'] is not defined, use the $id as the setting ID.
-        *
         * @since 3.4.0
         * @uses WP_Customize_Control::__construct()
         *
@@ -346,7 +578,7 @@ class WP_Customize_Color_Control extends WP_Customize_Control {
        }
 
        /**
-        * Enqueue control related scripts/styles.
+        * Enqueue scripts/styles for the color picker.
         *
         * @since 3.4.0
         */
@@ -364,27 +596,41 @@ class WP_Customize_Color_Control extends WP_Customize_Control {
        public function to_json() {
                parent::to_json();
                $this->json['statuses'] = $this->statuses;
+               $this->json['defaultValue'] = $this->setting->default;
        }
 
        /**
-        * Render the control's content.
+        * Don't render the control content from PHP, as it's rendered via JS on load.
         *
         * @since 3.4.0
         */
-       public function render_content() {
-               $this_default = $this->setting->default;
-               $default_attr = '';
-               if ( $this_default ) {
-                       if ( false === strpos( $this_default, '#' ) )
-                               $this_default = '#' . $this_default;
-                       $default_attr = ' data-default-color="' . esc_attr( $this_default ) . '"';
-               }
-               // The input's value gets set by JS. Don't fill it.
+       public function render_content() {}
+
+       /**
+        * Render a JS template for the content of the color picker control.
+        *
+        * @since 4.1.0
+        */
+       public function content_template() {
                ?>
+               <# var defaultValue = '';
+               if ( data.defaultValue ) {
+                       if ( '#' !== data.defaultValue.substring( 0, 1 ) ) {
+                               defaultValue = '#' + data.defaultValue;
+                       } else {
+                               defaultValue = data.defaultValue;
+                       }
+                       defaultValue = ' data-default-color=' + defaultValue; // Quotes added automatically.
+               } #>
                <label>
-                       <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
+                       <# if ( data.label ) { #>
+                               <span class="customize-control-title">{{{ data.label }}}</span>
+                       <# } #>
+                       <# if ( data.description ) { #>
+                               <span class="description customize-control-description">{{{ data.description }}}</span>
+                       <# } #>
                        <div class="customize-control-content">
-                               <input class="color-picker-hex" type="text" maxlength="7" placeholder="<?php esc_attr_e( 'Hex Value' ); ?>"<?php echo $default_attr ?> />
+                               <input class="color-picker-hex" type="text" maxlength="7" placeholder="<?php esc_attr_e( 'Hex Value' ); ?>" {{ defaultValue }} />
                        </div>
                </label>
                <?php
@@ -392,256 +638,328 @@ class WP_Customize_Color_Control extends WP_Customize_Control {
 }
 
 /**
- * Customize Upload Control Class
+ * Customize Media Control class.
  *
- * @package WordPress
- * @subpackage Customize
- * @since 3.4.0
+ * @since 4.2.0
+ *
+ * @see WP_Customize_Control
  */
-class WP_Customize_Upload_Control extends WP_Customize_Control {
-       public $type    = 'upload';
-       public $removed = '';
-       public $context;
-       public $extensions = array();
-
+class WP_Customize_Media_Control extends WP_Customize_Control {
        /**
-        * Enqueue control related scripts/styles.
+        * Control type.
         *
-        * @since 3.4.0
+        * @since 4.2.0
+        * @access public
+        * @var string
         */
-       public function enqueue() {
-               wp_enqueue_script( 'wp-plupload' );
-       }
+       public $type = 'media';
 
        /**
-        * Refresh the parameters passed to the JavaScript via JSON.
+        * Media control mime type.
         *
-        * @since 3.4.0
-        * @uses WP_Customize_Control::to_json()
+        * @since 4.2.0
+        * @access public
+        * @var string
         */
-       public function to_json() {
-               parent::to_json();
-
-               $this->json['removed'] = $this->removed;
-
-               if ( $this->context )
-                       $this->json['context'] = $this->context;
-
-               if ( $this->extensions )
-                       $this->json['extensions'] = implode( ',', $this->extensions );
-       }
+       public $mime_type = '';
 
        /**
-        * Render the control's content.
+        * Button labels.
         *
-        * @since 3.4.0
+        * @since 4.2.0
+        * @access public
+        * @var array
         */
-       public function render_content() {
-               ?>
-               <label>
-                       <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
-                       <div>
-                               <a href="#" class="button-secondary upload"><?php _e( 'Upload' ); ?></a>
-                               <a href="#" class="remove"><?php _e( 'Remove' ); ?></a>
-                       </div>
-               </label>
-               <?php
-       }
-}
-
-/**
- * Customize Image Control Class
- *
- * @package WordPress
- * @subpackage Customize
- * @since 3.4.0
- */
-class WP_Customize_Image_Control extends WP_Customize_Upload_Control {
-       public $type = 'image';
-       public $get_url;
-       public $statuses;
-       public $extensions = array( 'jpg', 'jpeg', 'gif', 'png' );
-
-       protected $tabs = array();
+       public $button_labels = array();
 
        /**
         * Constructor.
         *
-        * If $args['settings'] is not defined, use the $id as the setting ID.
+        * @since 4.1.0
+        * @since 4.2.0 Moved from WP_Customize_Upload_Control.
         *
-        * @since 3.4.0
-        * @uses WP_Customize_Upload_Control::__construct()
-        *
-        * @param WP_Customize_Manager $manager
-        * @param string $id
-        * @param array $args
+        * @param WP_Customize_Manager $manager {@see WP_Customize_Manager} instance.
         */
-       public function __construct( $manager, $id, $args ) {
-               $this->statuses = array( '' => __('No Image') );
-
+       public function __construct( $manager, $id, $args = array() ) {
                parent::__construct( $manager, $id, $args );
 
-               $this->add_tab( 'upload-new', __('Upload New'), array( $this, 'tab_upload_new' ) );
-               $this->add_tab( 'uploaded',   __('Uploaded'),   array( $this, 'tab_uploaded' ) );
-
-               // Early priority to occur before $this->manager->prepare_controls();
-               add_action( 'customize_controls_init', array( $this, 'prepare_control' ), 5 );
+               $this->button_labels = array(
+                       'select'       => __( 'Select File' ),
+                       'change'       => __( 'Change File' ),
+                       'default'      => __( 'Default' ),
+                       'remove'       => __( 'Remove' ),
+                       'placeholder'  => __( 'No file selected' ),
+                       'frame_title'  => __( 'Select File' ),
+                       'frame_button' => __( 'Choose File' ),
+               );
        }
 
        /**
-        * Prepares the control.
-        *
-        * If no tabs exist, removes the control from the manager.
+        * Enqueue control related scripts/styles.
         *
-        * @since 3.4.2
+        * @since 3.4.0
+        * @since 4.2.0 Moved from WP_Customize_Upload_Control.
         */
-       public function prepare_control() {
-               if ( ! $this->tabs )
-                       $this->manager->remove_control( $this->id );
+       public function enqueue() {
+               wp_enqueue_media();
        }
 
        /**
         * Refresh the parameters passed to the JavaScript via JSON.
         *
         * @since 3.4.0
-        * @uses WP_Customize_Upload_Control::to_json()
+        * @since 4.2.0 Moved from WP_Customize_Upload_Control.
+        *
+        * @see WP_Customize_Control::to_json()
         */
        public function to_json() {
                parent::to_json();
-               $this->json['statuses'] = $this->statuses;
+               $this->json['mime_type'] = $this->mime_type;
+               $this->json['button_labels'] = $this->button_labels;
+
+               $value = $this->value();
+
+               if ( is_object( $this->setting ) ) {
+                       if ( $this->setting->default ) {
+                               // Fake an attachment model - needs all fields used by template.
+                               // Note that the default value must be a URL, NOT an attachment ID.
+                               $type = in_array( substr( $this->setting->default, -3 ), array( 'jpg', 'png', 'gif', 'bmp' ) ) ? 'image' : 'document';
+                               $default_attachment = array(
+                                       'id' => 1,
+                                       'url' => $this->setting->default,
+                                       'type' => $type,
+                                       'icon' => wp_mime_type_icon( $type ),
+                                       'title' => basename( $this->setting->default ),
+                               );
+
+                               if ( 'image' === $type ) {
+                                       $default_attachment['sizes'] = array(
+                                               'full' => array( 'url' => $this->setting->default ),
+                                       );
+                               }
+
+                               $this->json['defaultAttachment'] = $default_attachment;
+                       }
+
+                       if ( $value && $this->setting->default && $value === $this->setting->default ) {
+                               // Set the default as the attachment.
+                               $this->json['attachment'] = $this->json['defaultAttachment'];
+                       } elseif ( $value ) {
+                               $this->json['attachment'] = wp_prepare_attachment_for_js( $value );
+                       }
+               }
        }
 
        /**
-        * Render the control's content.
+        * Don't render any content for this control from PHP.
         *
         * @since 3.4.0
+        * @since 4.2.0 Moved from WP_Customize_Upload_Control.
+        *
+        * @see WP_Customize_Media_Control::content_template()
         */
-       public function render_content() {
-               $src = $this->value();
-               if ( isset( $this->get_url ) )
-                       $src = call_user_func( $this->get_url, $src );
+       public function render_content() {}
 
+       /**
+        * Render a JS template for the content of the media control.
+        *
+        * @since 4.1.0
+        * @since 4.2.0 Moved from WP_Customize_Upload_Control.
+        */
+       public function content_template() {
                ?>
-               <div class="customize-image-picker">
-                       <span class="customize-control-title"><?php echo esc_html( $this->label ); ?></span>
+               <label for="{{ data.settings['default'] }}-button">
+                       <# if ( data.label ) { #>
+                               <span class="customize-control-title">{{ data.label }}</span>
+                       <# } #>
+                       <# if ( data.description ) { #>
+                               <span class="description customize-control-description">{{{ data.description }}}</span>
+                       <# } #>
+               </label>
 
-                       <div class="customize-control-content">
-                               <div class="dropdown preview-thumbnail" tabindex="0">
-                                       <div class="dropdown-content">
-                                               <?php if ( empty( $src ) ): ?>
-                                                       <img style="display:none;" />
-                                               <?php else: ?>
-                                                       <img src="<?php echo esc_url( set_url_scheme( $src ) ); ?>" />
-                                               <?php endif; ?>
-                                               <div class="dropdown-status"></div>
+               <# if ( data.attachment && data.attachment.id ) { #>
+                       <div class="current">
+                               <div class="container">
+                                       <div class="attachment-media-view attachment-media-view-{{ data.attachment.type }} {{ data.attachment.orientation }}">
+                                               <div class="thumbnail thumbnail-{{ data.attachment.type }}">
+                                                       <# if ( 'image' === data.attachment.type && data.attachment.sizes && data.attachment.sizes.medium ) { #>
+                                                               <img class="attachment-thumb" src="{{ data.attachment.sizes.medium.url }}" draggable="false" />
+                                                       <# } else if ( 'image' === data.attachment.type && data.attachment.sizes && data.attachment.sizes.full ) { #>
+                                                               <img class="attachment-thumb" src="{{ data.attachment.sizes.full.url }}" draggable="false" />
+                                                       <# } else if ( 'audio' === data.attachment.type ) { #>
+                                                               <# if ( data.attachment.image && data.attachment.image.src && data.attachment.image.src !== data.attachment.icon ) { #>
+                                                                       <img src="{{ data.attachment.image.src }}" class="thumbnail" draggable="false" />
+                                                               <# } else { #>
+                                                                       <img src="{{ data.attachment.icon }}" class="attachment-thumb type-icon" draggable="false" />
+                                                               <# } #>
+                                                               <p class="attachment-meta attachment-meta-title">&#8220;{{ data.attachment.title }}&#8221;</p>
+                                                               <# if ( data.attachment.album || data.attachment.meta.album ) { #>
+                                                               <p class="attachment-meta"><em>{{ data.attachment.album || data.attachment.meta.album }}</em></p>
+                                                               <# } #>
+                                                               <# if ( data.attachment.artist || data.attachment.meta.artist ) { #>
+                                                               <p class="attachment-meta">{{ data.attachment.artist || data.attachment.meta.artist }}</p>
+                                                               <# } #>
+                                                               <audio style="visibility: hidden" controls class="wp-audio-shortcode" width="100%" preload="none">
+                                                                       <source type="{{ data.attachment.mime }}" src="{{ data.attachment.url }}"/>
+                                                               </audio>
+                                                       <# } else if ( 'video' === data.attachment.type ) { #>
+                                                               <div class="wp-media-wrapper wp-video">
+                                                                       <video controls="controls" class="wp-video-shortcode" preload="metadata"
+                                                                               <# if ( data.attachment.image && data.attachment.image.src !== data.attachment.icon ) { #>poster="{{ data.attachment.image.src }}"<# } #>>
+                                                                               <source type="{{ data.attachment.mime }}" src="{{ data.attachment.url }}"/>
+                                                                       </video>
+                                                               </div>
+                                                       <# } else { #>
+                                                               <img class="attachment-thumb type-icon" src="{{ data.attachment.icon }}" class="icon" draggable="false" />
+                                                               <p class="attachment-title">{{ data.attachment.title }}</p>
+                                                       <# } #>
+                                               </div>
                                        </div>
-                                       <div class="dropdown-arrow"></div>
                                </div>
                        </div>
-
-                       <div class="library">
-                               <ul>
-                                       <?php foreach ( $this->tabs as $id => $tab ): ?>
-                                               <li data-customize-tab='<?php echo esc_attr( $id ); ?>' tabindex='0'>
-                                                       <?php echo esc_html( $tab['label'] ); ?>
-                                               </li>
-                                       <?php endforeach; ?>
-                               </ul>
-                               <?php foreach ( $this->tabs as $id => $tab ): ?>
-                                       <div class="library-content" data-customize-tab='<?php echo esc_attr( $id ); ?>'>
-                                               <?php call_user_func( $tab['callback'] ); ?>
+                       <div class="actions">
+                               <button type="button" class="button remove-button"><?php echo $this->button_labels['remove']; ?></button>
+                               <button type="button" class="button upload-button" id="{{ data.settings['default'] }}-button"><?php echo $this->button_labels['change']; ?></button>
+                               <div style="clear:both"></div>
+                       </div>
+               <# } else { #>
+                       <div class="current">
+                               <div class="container">
+                                       <div class="placeholder">
+                                               <div class="inner">
+                                                       <span>
+                                                               <?php echo $this->button_labels['placeholder']; ?>
+                                                       </span>
+                                               </div>
                                        </div>
-                               <?php endforeach; ?>
+                               </div>
                        </div>
-
                        <div class="actions">
-                               <a href="#" class="remove"><?php _e( 'Remove Image' ); ?></a>
+                               <# if ( data.defaultAttachment ) { #>
+                                       <button type="button" class="button default-button"><?php echo $this->button_labels['default']; ?></button>
+                               <# } #>
+                               <button type="button" class="button upload-button" id="{{ data.settings['default'] }}-button"><?php echo $this->button_labels['select']; ?></button>
+                               <div style="clear:both"></div>
                        </div>
-               </div>
+               <# } #>
                <?php
        }
+}
+
+/**
+ * Customize Upload Control Class.
+ *
+ * @since 3.4.0
+ *
+ * @see WP_Customize_Media_Control
+ */
+class WP_Customize_Upload_Control extends WP_Customize_Media_Control {
+       public $type          = 'upload';
+       public $mime_type     = '';
+       public $button_labels = array();
+       public $removed = ''; // unused
+       public $context; // unused
+       public $extensions = array(); // unused
 
        /**
-        * Add a tab to the control.
+        * Refresh the parameters passed to the JavaScript via JSON.
         *
         * @since 3.4.0
         *
-        * @param string $id
-        * @param string $label
-        * @param mixed $callback
+        * @uses WP_Customize_Media_Control::to_json()
         */
-       public function add_tab( $id, $label, $callback ) {
-               $this->tabs[ $id ] = array(
-                       'label'    => $label,
-                       'callback' => $callback,
-               );
+       public function to_json() {
+               parent::to_json();
+
+               $value = $this->value();
+               if ( $value ) {
+                       // Get the attachment model for the existing file.
+                       $attachment_id = attachment_url_to_postid( $value );
+                       if ( $attachment_id ) {
+                               $this->json['attachment'] = wp_prepare_attachment_for_js( $attachment_id );
+                       }
+               }
        }
+}
+
+/**
+ * Customize Image Control class.
+ *
+ * @since 3.4.0
+ *
+ * @see WP_Customize_Upload_Control
+ */
+class WP_Customize_Image_Control extends WP_Customize_Upload_Control {
+       public $type = 'image';
+       public $mime_type = 'image';
 
        /**
-        * Remove a tab from the control.
+        * Constructor.
         *
         * @since 3.4.0
+        * @uses WP_Customize_Upload_Control::__construct()
         *
+        * @param WP_Customize_Manager $manager
         * @param string $id
+        * @param array  $args
         */
-       public function remove_tab( $id ) {
-               unset( $this->tabs[ $id ] );
+       public function __construct( $manager, $id, $args = array() ) {
+               parent::__construct( $manager, $id, $args );
+
+               $this->button_labels = array(
+                       'select'       => __( 'Select Image' ),
+                       'change'       => __( 'Change Image' ),
+                       'remove'       => __( 'Remove' ),
+                       'default'      => __( 'Default' ),
+                       'placeholder'  => __( 'No image selected' ),
+                       'frame_title'  => __( 'Select Image' ),
+                       'frame_button' => __( 'Choose Image' ),
+               );
        }
 
+       /**
+        * @since 3.4.2
+        * @deprecated 4.1.0
+        */
+       public function prepare_control() {}
+
        /**
         * @since 3.4.0
+        * @deprecated 4.1.0
+        *
+        * @param string $id
+        * @param string $label
+        * @param mixed $callback
         */
-       public function tab_upload_new() {
-               if ( ! _device_can_upload() ) {
-                       ?>
-                       <p><?php _e('The web browser on your device cannot be used to upload files. You may be able to use the <a href="http://wordpress.org/extend/mobile/">native app for your device</a> instead.'); ?></p>
-                       <?php
-               } else {
-                       ?>
-                       <div class="upload-dropzone">
-                               <?php _e('Drop a file here or <a href="#" class="upload">select a file</a>.'); ?>
-                       </div>
-                       <div class="upload-fallback">
-                               <span class="button-secondary"><?php _e('Select File'); ?></span>
-                       </div>
-                       <?php
-               }
-       }
+       public function add_tab( $id, $label, $callback ) {}
 
        /**
         * @since 3.4.0
+        * @deprecated 4.1.0
+        *
+        * @param string $id
         */
-       public function tab_uploaded() {
-               ?>
-               <div class="uploaded-target"></div>
-               <?php
-       }
+       public function remove_tab( $id ) {}
 
        /**
         * @since 3.4.0
+        * @deprecated 4.1.0
         *
         * @param string $url
         * @param string $thumbnail_url
         */
-       public function print_tab_image( $url, $thumbnail_url = null ) {
-               $url = set_url_scheme( $url );
-               $thumbnail_url = ( $thumbnail_url ) ? set_url_scheme( $thumbnail_url ) : $url;
-               ?>
-               <a href="#" class="thumbnail" data-customize-image-value="<?php echo esc_url( $url ); ?>">
-                       <img src="<?php echo esc_url( $thumbnail_url ); ?>" />
-               </a>
-               <?php
-       }
+       public function print_tab_image( $url, $thumbnail_url = null ) {}
 }
 
 /**
- * Customize Background Image Control Class
+ * Customize Background Image Control class.
  *
- * @package WordPress
- * @subpackage Customize
  * @since 3.4.0
+ *
+ * @see WP_Customize_Image_Control
  */
 class WP_Customize_Background_Image_Control extends WP_Customize_Image_Control {
+       public $type = 'background';
 
        /**
         * Constructor.
@@ -655,73 +973,38 @@ class WP_Customize_Background_Image_Control extends WP_Customize_Image_Control {
                parent::__construct( $manager, 'background_image', array(
                        'label'    => __( 'Background Image' ),
                        'section'  => 'background_image',
-                       'context'  => 'custom-background',
-                       'get_url'  => 'get_background_image',
                ) );
-
-               if ( $this->setting->default )
-                       $this->add_tab( 'default',  __('Default'),  array( $this, 'tab_default_background' ) );
        }
 
        /**
-        * @since 3.4.0
+        * Enqueue control related scripts/styles.
+        *
+        * @since 4.1.0
         */
-       public function tab_uploaded() {
-               $backgrounds = get_posts( array(
-                       'post_type'  => 'attachment',
-                       'meta_key'   => '_wp_attachment_is_custom_background',
-                       'meta_value' => $this->manager->get_stylesheet(),
-                       'orderby'    => 'none',
-                       'nopaging'   => true,
-               ) );
-
-               ?><div class="uploaded-target"></div><?php
-
-               if ( empty( $backgrounds ) )
-                       return;
-
-               foreach ( (array) $backgrounds as $background )
-                       $this->print_tab_image( esc_url_raw( $background->guid ) );
-       }
+       public function enqueue() {
+               parent::enqueue();
 
-       /**
-        * @since 3.4.0
-        * @uses WP_Customize_Image_Control::print_tab_image()
-        */
-       public function tab_default_background() {
-               $this->print_tab_image( $this->setting->default );
+               wp_localize_script( 'customize-controls', '_wpCustomizeBackground', array(
+                       'nonces' => array(
+                               'add' => wp_create_nonce( 'background-add' ),
+                       ),
+               ) );
        }
 }
 
 /**
- * Customize Header Image Control Class
+ * Customize Header Image Control class.
  *
- * @package WordPress
- * @subpackage Customize
  * @since 3.4.0
+ *
+ * @see WP_Customize_Image_Control
  */
 class WP_Customize_Header_Image_Control extends WP_Customize_Image_Control {
-       /**
-        * The processed default headers.
-        * @since 3.4.2
-        * @var array
-        */
-       protected $default_headers;
-
-       /**
-        * The uploaded headers.
-        * @since 3.4.2
-        * @var array
-        */
-       protected $uploaded_headers;
+       public $type = 'header';
+       public $uploaded_headers;
+       public $default_headers;
 
        /**
-        * Constructor.
-        *
-        * @since 3.4.0
-        * @uses WP_Customize_Image_Control::__construct()
-        * @uses WP_Customize_Image_Control::add_tab()
-        *
         * @param WP_Customize_Manager $manager
         */
        public function __construct( $manager ) {
@@ -732,88 +1015,364 @@ class WP_Customize_Header_Image_Control extends WP_Customize_Image_Control {
                                'data'    => 'header_image_data',
                        ),
                        'section'  => 'header_image',
-                       'context'  => 'custom-header',
                        'removed'  => 'remove-header',
                        'get_url'  => 'get_header_image',
-                       'statuses' => array(
-                               ''                      => __('Default'),
-                               'remove-header'         => __('No Image'),
-                               'random-default-image'  => __('Random Default Image'),
-                               'random-uploaded-image' => __('Random Uploaded Image'),
-                       )
                ) );
 
-               // Remove the upload tab.
-               $this->remove_tab( 'upload-new' );
        }
 
-       /**
-        * Prepares the control.
-        *
-        * If no tabs exist, removes the control from the manager.
-        *
-        * @since 3.4.2
-        */
+       public function enqueue() {
+               wp_enqueue_media();
+               wp_enqueue_script( 'customize-views' );
+
+               $this->prepare_control();
+
+               wp_localize_script( 'customize-views', '_wpCustomizeHeader', array(
+                       'data' => array(
+                               'width' => absint( get_theme_support( 'custom-header', 'width' ) ),
+                               'height' => absint( get_theme_support( 'custom-header', 'height' ) ),
+                               'flex-width' => absint( get_theme_support( 'custom-header', 'flex-width' ) ),
+                               'flex-height' => absint( get_theme_support( 'custom-header', 'flex-height' ) ),
+                               'currentImgSrc' => $this->get_current_image_src(),
+                       ),
+                       'nonces' => array(
+                               'add' => wp_create_nonce( 'header-add' ),
+                               'remove' => wp_create_nonce( 'header-remove' ),
+                       ),
+                       'uploads' => $this->uploaded_headers,
+                       'defaults' => $this->default_headers
+               ) );
+
+               parent::enqueue();
+       }
+
        public function prepare_control() {
                global $custom_image_header;
-               if ( empty( $custom_image_header ) )
-                       return parent::prepare_control();
+               if ( empty( $custom_image_header ) ) {
+                       return;
+               }
 
                // Process default headers and uploaded headers.
                $custom_image_header->process_default_headers();
-               $this->default_headers = $custom_image_header->default_headers;
-               $this->uploaded_headers = get_uploaded_header_images();
+               $this->default_headers = $custom_image_header->get_default_header_images();
+               $this->uploaded_headers = $custom_image_header->get_uploaded_header_images();
+       }
+
+       public function print_header_image_template() {
+               ?>
+               <script type="text/template" id="tmpl-header-choice">
+                       <# if (data.random) { #>
+                                       <button type="button" class="button display-options random">
+                                               <span class="dashicons dashicons-randomize dice"></span>
+                                               <# if ( data.type === 'uploaded' ) { #>
+                                                       <?php _e( 'Randomize uploaded headers' ); ?>
+                                               <# } else if ( data.type === 'default' ) { #>
+                                                       <?php _e( 'Randomize suggested headers' ); ?>
+                                               <# } #>
+                                       </button>
+
+                       <# } else { #>
+
+                       <# if (data.type === 'uploaded') { #>
+                               <div class="dashicons dashicons-no close"></div>
+                       <# } #>
+
+                       <button type="button" class="choice thumbnail"
+                               data-customize-image-value="{{{data.header.url}}}"
+                               data-customize-header-image-data="{{JSON.stringify(data.header)}}">
+                               <span class="screen-reader-text"><?php _e( 'Set image' ); ?></span>
+                               <img src="{{{data.header.thumbnail_url}}}" alt="{{{data.header.alt_text || data.header.description}}}">
+                       </button>
+
+                       <# } #>
+               </script>
+
+               <script type="text/template" id="tmpl-header-current">
+                       <# if (data.choice) { #>
+                               <# if (data.random) { #>
+
+                       <div class="placeholder">
+                               <div class="inner">
+                                       <span><span class="dashicons dashicons-randomize dice"></span>
+                                       <# if ( data.type === 'uploaded' ) { #>
+                                               <?php _e( 'Randomizing uploaded headers' ); ?>
+                                       <# } else if ( data.type === 'default' ) { #>
+                                               <?php _e( 'Randomizing suggested headers' ); ?>
+                                       <# } #>
+                                       </span>
+                               </div>
+                       </div>
+
+                               <# } else { #>
 
-               if ( $this->default_headers )
-                       $this->add_tab( 'default',  __('Default'),  array( $this, 'tab_default_headers' ) );
+                       <img src="{{{data.header.thumbnail_url}}}" alt="{{{data.header.alt_text || data.header.description}}}" tabindex="0"/>
 
-               if ( ! $this->uploaded_headers )
-                       $this->remove_tab( 'uploaded' );
+                               <# } #>
+                       <# } else { #>
 
-               return parent::prepare_control();
+                       <div class="placeholder">
+                               <div class="inner">
+                                       <span>
+                                               <?php _e( 'No image set' ); ?>
+                                       </span>
+                               </div>
+                       </div>
+
+                       <# } #>
+               </script>
+               <?php
+       }
+
+       public function get_current_image_src() {
+               $src = $this->value();
+               if ( isset( $this->get_url ) ) {
+                       $src = call_user_func( $this->get_url, $src );
+                       return $src;
+               }
+               return null;
+       }
+
+       public function render_content() {
+               $this->print_header_image_template();
+               $visibility = $this->get_current_image_src() ? '' : ' style="display:none" ';
+               $width = absint( get_theme_support( 'custom-header', 'width' ) );
+               $height = absint( get_theme_support( 'custom-header', 'height' ) );
+               ?>
+
+
+               <div class="customize-control-content">
+                       <p class="customizer-section-intro">
+                               <?php
+                               if ( $width && $height ) {
+                                       printf( __( 'While you can crop images to your liking after clicking <strong>Add new image</strong>, your theme recommends a header size of <strong>%s &times; %s</strong> pixels.' ), $width, $height );
+                               } elseif ( $width ) {
+                                       printf( __( 'While you can crop images to your liking after clicking <strong>Add new image</strong>, your theme recommends a header width of <strong>%s</strong> pixels.' ), $width );
+                               } else {
+                                       printf( __( 'While you can crop images to your liking after clicking <strong>Add new image</strong>, your theme recommends a header height of <strong>%s</strong> pixels.' ), $height );
+                               }
+                               ?>
+                       </p>
+                       <div class="current">
+                               <span class="customize-control-title">
+                                       <?php _e( 'Current header' ); ?>
+                               </span>
+                               <div class="container">
+                               </div>
+                       </div>
+                       <div class="actions">
+                               <?php /* translators: Hide as in hide header image via the Customizer */ ?>
+                               <button type="button"<?php echo $visibility ?> class="button remove"><?php _ex( 'Hide image', 'custom header' ); ?></button>
+                               <?php /* translators: New as in add new header image via the Customizer */ ?>
+                               <button type="button" class="button new"><?php _ex( 'Add new image', 'header image' ); ?></button>
+                               <div style="clear:both"></div>
+                       </div>
+                       <div class="choices">
+                               <span class="customize-control-title header-previously-uploaded">
+                                       <?php _ex( 'Previously uploaded', 'custom headers' ); ?>
+                               </span>
+                               <div class="uploaded">
+                                       <div class="list">
+                                       </div>
+                               </div>
+                               <span class="customize-control-title header-default">
+                                       <?php _ex( 'Suggested', 'custom headers' ); ?>
+                               </span>
+                               <div class="default">
+                                       <div class="list">
+                                       </div>
+                               </div>
+                       </div>
+               </div>
+               <?php
        }
+}
+
+/**
+ * Customize Theme Control class.
+ *
+ * @since 4.2.0
+ *
+ * @see WP_Customize_Control
+ */
+class WP_Customize_Theme_Control extends WP_Customize_Control {
 
        /**
-        * @since 3.4.0
+        * Customize control type.
         *
-        * @param mixed $choice Which header image to select. (@see Custom_Image_Header::get_header_image() )
-        * @param array $header
+        * @since 4.2.0
+        * @access public
+        * @var string
         */
-       public function print_header_image( $choice, $header ) {
-               $header['url']           = set_url_scheme( $header['url'] );
-               $header['thumbnail_url'] = set_url_scheme( $header['thumbnail_url'] );
+       public $type = 'theme';
 
-               $header_image_data = array( 'choice' => $choice );
-               foreach ( array( 'attachment_id', 'width', 'height', 'url', 'thumbnail_url' ) as $key ) {
-                       if ( isset( $header[ $key ] ) )
-                               $header_image_data[ $key ] = $header[ $key ];
-               }
+       /**
+        * Theme object.
+        *
+        * @since 4.2.0
+        * @access public
+        * @var WP_Theme
+        */
+       public $theme;
+
+       /**
+        * Refresh the parameters passed to the JavaScript via JSON.
+        *
+        * @since 4.2.0
+        * @access public
+        *
+        * @see WP_Customize_Control::to_json()
+        */
+       public function to_json() {
+               parent::to_json();
+               $this->json['theme'] = $this->theme;
+       }
+
+       /**
+        * Don't render the control content from PHP, as it's rendered via JS on load.
+        *
+        * @since 4.2.0
+        * @access public
+        */
+       public function render_content() {}
+
+       /**
+        * Render a JS template for theme display.
+        *
+        * @since 4.2.0
+        * @access public
+        */
+       public function content_template() {
+               $current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
+               $active_url  = esc_url( remove_query_arg( 'theme', $current_url ) );
+               $preview_url = esc_url( add_query_arg( 'theme', '__THEME__', $current_url ) ); // Token because esc_url() strips curly braces.
+               $preview_url = str_replace( '__THEME__', '{{ data.theme.id }}', $preview_url );
+               ?>
+               <# if ( data.theme.isActiveTheme ) { #>
+                       <div class="theme active" tabindex="0" data-preview-url="<?php echo esc_attr( $active_url ); ?>" aria-describedby="{{ data.theme.id }}-action {{ data.theme.id }}-name">
+               <# } else { #>
+                       <div class="theme" tabindex="0" data-preview-url="<?php echo esc_attr( $preview_url ); ?>" aria-describedby="{{ data.theme.id }}-action {{ data.theme.id }}-name">
+               <# } #>
+
+                       <# if ( data.theme.screenshot[0] ) { #>
+                               <div class="theme-screenshot">
+                                       <img data-src="{{ data.theme.screenshot[0] }}" alt="" />
+                               </div>
+                       <# } else { #>
+                               <div class="theme-screenshot blank"></div>
+                       <# } #>
+
+                       <# if ( data.theme.isActiveTheme ) { #>
+                               <span class="more-details" id="{{ data.theme.id }}-action"><?php _e( 'Customize' ); ?></span>
+                       <# } else { #>
+                               <span class="more-details" id="{{ data.theme.id }}-action"><?php _e( 'Live Preview' ); ?></span>
+                       <# } #>
 
+                       <div class="theme-author"><?php printf( __( 'By %s' ), '{{ data.theme.author }}' ); ?></div>
+
+                       <# if ( data.theme.isActiveTheme ) { #>
+                               <h3 class="theme-name" id="{{ data.theme.id }}-name">
+                                       <?php
+                                       /* translators: %s: theme name */
+                                       printf( __( '<span>Active:</span> %s' ), '{{ data.theme.name }}' );
+                                       ?>
+                               </h3>
+                       <# } else { #>
+                               <h3 class="theme-name" id="{{ data.theme.id }}-name">{{ data.theme.name }}</h3>
+                               <div class="theme-actions">
+                                       <button type="button" class="button theme-details"><?php _e( 'Theme Details' ); ?></button>
+                               </div>
+                       <# } #>
+               </div>
+       <?php
+       }
+}
+
+/**
+ * Widget Area Customize Control class.
+ *
+ * @since 3.9.0
+ *
+ * @see WP_Customize_Control
+ */
+class WP_Widget_Area_Customize_Control extends WP_Customize_Control {
+       public $type = 'sidebar_widgets';
+       public $sidebar_id;
+
+       public function to_json() {
+               parent::to_json();
+               $exported_properties = array( 'sidebar_id' );
+               foreach ( $exported_properties as $key ) {
+                       $this->json[ $key ] = $this->$key;
+               }
+       }
 
+       public function render_content() {
                ?>
-               <a href="#" class="thumbnail"
-                       data-customize-image-value="<?php echo esc_url( $header['url'] ); ?>"
-                       data-customize-header-image-data="<?php echo esc_attr( json_encode( $header_image_data ) ); ?>">
-                       <img src="<?php echo esc_url( $header['thumbnail_url'] ); ?>" />
-               </a>
+               <span class="button-secondary add-new-widget" tabindex="0">
+                       <?php _e( 'Add a Widget' ); ?>
+               </span>
+
+               <span class="reorder-toggle" tabindex="0">
+                       <span class="reorder"><?php _ex( 'Reorder', 'Reorder widgets in Customizer' ); ?></span>
+                       <span class="reorder-done"><?php _ex( 'Done', 'Cancel reordering widgets in Customizer' ); ?></span>
+               </span>
                <?php
        }
 
-       /**
-        * @since 3.4.0
-        */
-       public function tab_uploaded() {
-               ?><div class="uploaded-target"></div><?php
+}
+
+/**
+ * Widget Form Customize Control class.
+ *
+ * @since 3.9.0
+ *
+ * @see WP_Customize_Control
+ */
+class WP_Widget_Form_Customize_Control extends WP_Customize_Control {
+       public $type = 'widget_form';
+       public $widget_id;
+       public $widget_id_base;
+       public $sidebar_id;
+       public $is_new = false;
+       public $width;
+       public $height;
+       public $is_wide = false;
 
-               foreach ( $this->uploaded_headers as $choice => $header )
-                       $this->print_header_image( $choice, $header );
+       public function to_json() {
+               parent::to_json();
+               $exported_properties = array( 'widget_id', 'widget_id_base', 'sidebar_id', 'width', 'height', 'is_wide' );
+               foreach ( $exported_properties as $key ) {
+                       $this->json[ $key ] = $this->$key;
+               }
+       }
+
+       public function render_content() {
+               global $wp_registered_widgets;
+               require_once ABSPATH . '/wp-admin/includes/widgets.php';
+
+               $widget = $wp_registered_widgets[ $this->widget_id ];
+               if ( ! isset( $widget['params'][0] ) ) {
+                       $widget['params'][0] = array();
+               }
+
+               $args = array(
+                       'widget_id' => $widget['id'],
+                       'widget_name' => $widget['name'],
+               );
+
+               $args = wp_list_widget_controls_dynamic_sidebar( array( 0 => $args, 1 => $widget['params'][0] ) );
+               echo $this->manager->widgets->get_widget_control( $args );
        }
 
        /**
-        * @since 3.4.0
+        * Whether the current widget is rendered on the page.
+        *
+        * @since 4.0.0
+        * @access public
+        *
+        * @return bool Whether the widget is rendered.
         */
-       public function tab_default_headers() {
-               foreach ( $this->default_headers as $choice => $header )
-                       $this->print_header_image( $choice, $header );
+       public function active_callback() {
+               return $this->manager->widgets->is_widget_rendered( $this->widget_id );
        }
-}
\ No newline at end of file
+}