feat(chat.d.ts): Add MainActionButtonProperties

Author: marker dao ®

packages/devextreme/js/ui/chat.d.ts

@@ -51,6 +51,14 @@ export type InitializedEvent = InitializedEventInfo<dxChat>;
  */
 export type OptionChangedEvent = EventInfo<dxChat> & ChangedOptionInfo;
 
+/**
+ * @docid _ui_chat_MainActionButtonClickEvent
+ * @public
+ * @type object
+ * @inherits NativeEventInfo
+ */
+export type MainActionButtonClickEvent = NativeEventInfo<dxChat, InteractionEvent>;
+
 /**
  * @docid _ui_chat_MessageEnteredEvent
  * @public
@@ -346,6 +354,31 @@ export type EmptyViewTemplateData = {
     };
 };
 
+/**
+ * @docid
+ * @namespace DevExpress.ui.dxChat
+ * @public
+ */
+export type MainActionButtonProperties = {
+    /**
+     * @docid
+     * @public
+     */
+    icon?: string;
+    /**
+     * @docid
+     * @public
+     * @default 'default'
+     */
+    behavior?: 'default' | 'custom';
+    /**
+     * @docid
+     * @type_function_param1 e:{ui/chat:MainActionButtonClickEvent}
+     * @public
+     */
+    onClick: ((e: MainActionButtonClickEvent) => void);
+};
+
 /**
  * @deprecated use Properties instead
  * @namespace DevExpress.ui
@@ -446,6 +479,12 @@ export interface dxChatOptions extends WidgetOptions<dxChat> {
      * @public
      */
     inputFieldText?: TextAreaProperties['value'];
+    /**
+     * @docid
+     * @type MainActionButtonProperties
+     * @public
+     */
+    mainActionButtonOptions?: MainActionButtonProperties;
     /**
      * @docid
      * @default null