Add upstream

wp-content/plugins/jetpack/modules/widgets/twitter-timeline-admin.js

@@ -0,0 +1,35 @@
+jQuery( function( $ ) {
+	function twitterWidgetTypeChanged( widgetTypeSelector ) {
+		var selectedType = $( widgetTypeSelector ).val();
+		$( widgetTypeSelector )
+			.closest( '.jetpack-twitter-timeline-widget-type-container' )
+			.next( '.jetpack-twitter-timeline-widget-id-container' )
+			.find( 'label' )
+			.css( 'display', function() {
+				var labelType = $( this ).data( 'widget-type' );
+				if ( selectedType === labelType ) {
+					return '';
+				} else {
+					return 'none';
+				}
+			} );
+	}
+
+	// We could either be in wp-admin/widgets.php or the Customizer.
+	var $container = $( '#customize-controls' );
+	if ( ! $container.length ) {
+		$container = $( '#wpbody' );
+	}
+
+	// Observe widget settings for 'change' events of the 'type' property for
+	// current and future Twitter timeline widgets.
+	$container.on( 'change', '.jetpack-twitter-timeline-widget-type', function() {
+		twitterWidgetTypeChanged( this );
+	} );
+
+	// Set the labels for currently existing widgets (including the "template"
+	// version that is copied when a new widget is added).
+	$container.find( '.jetpack-twitter-timeline-widget-type' ).each( function() {
+		twitterWidgetTypeChanged( this );
+	} );
+} );