declare namespace Ext {
    export namespace util {
        export interface KeyNavConfig {
            defaultEventAction?: string;
            disabled?: boolean;
            eventName?: string;
            forceKeyDown?: boolean;
            ignoreInputFields?: boolean;
            keyMap?: Ext.util.KeyMap;
            priority?: number;
            processEvent?: CallableFunction;
            processEventScope?: object;
            target?: Ext.Component | Ext.dom.Element | string;
        }

        export class KeyNav extends Ext.Base  {
            public lastKeyEvent?: Ext.event.Event;
            public disable(): void;
            public enable(): void;
            public setDisabled(disabled?: boolean): void;
        }
    }
}