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diff --git a/vendor/oojs/oojs-ui/src/widgets/ButtonSelectWidget.js b/vendor/oojs/oojs-ui/src/widgets/ButtonSelectWidget.js
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+++ b/vendor/oojs/oojs-ui/src/widgets/ButtonSelectWidget.js
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+/**
+ * ButtonSelectWidget is a {@link OO.ui.SelectWidget select widget} that contains
+ * button options and is used together with
+ * OO.ui.ButtonOptionWidget. The ButtonSelectWidget provides an interface for
+ * highlighting, choosing, and selecting mutually exclusive options. Please see
+ * the [OOjs UI documentation on MediaWiki] [1] for more information.
+ *
+ *     @example
+ *     // Example: A ButtonSelectWidget that contains three ButtonOptionWidgets
+ *     var option1 = new OO.ui.ButtonOptionWidget( {
+ *         data: 1,
+ *         label: 'Option 1',
+ *         title: 'Button option 1'
+ *     } );
+ *
+ *     var option2 = new OO.ui.ButtonOptionWidget( {
+ *         data: 2,
+ *         label: 'Option 2',
+ *         title: 'Button option 2'
+ *     } );
+ *
+ *     var option3 = new OO.ui.ButtonOptionWidget( {
+ *         data: 3,
+ *         label: 'Option 3',
+ *         title: 'Button option 3'
+ *     } );
+ *
+ *     var buttonSelect=new OO.ui.ButtonSelectWidget( {
+ *         items: [ option1, option2, option3 ]
+ *     } );
+ *     $( 'body' ).append( buttonSelect.$element );
+ *
+ * [1]: https://www.mediawiki.org/wiki/OOjs_UI/Widgets/Selects_and_Options
+ *
+ * @class
+ * @extends OO.ui.SelectWidget
+ * @mixins OO.ui.TabIndexedElement
+ *
+ * @constructor
+ * @param {Object} [config] Configuration options
+ */
+OO.ui.ButtonSelectWidget = function OoUiButtonSelectWidget( config ) {
+	// Parent constructor
+	OO.ui.ButtonSelectWidget.super.call( this, config );
+
+	// Mixin constructors
+	OO.ui.TabIndexedElement.call( this, config );
+
+	// Events
+	this.$element.on( {
+		focus: this.bindKeyDownListener.bind( this ),
+		blur: this.unbindKeyDownListener.bind( this )
+	} );
+
+	// Initialization
+	this.$element.addClass( 'oo-ui-buttonSelectWidget' );
+};
+
+/* Setup */
+
+OO.inheritClass( OO.ui.ButtonSelectWidget, OO.ui.SelectWidget );
+OO.mixinClass( OO.ui.ButtonSelectWidget, OO.ui.TabIndexedElement );