declare namespace Ext {
    export namespace drag {
        export interface SourceConfig {
            activeCls?: string;
            activeOnLongPress?: boolean | string | string[];
            autoDestroy?: boolean;
            constrain?: object | Ext.util.Region | Ext.dom.Element;
            describe?: CallableFunction;
            element?: string | Ext.dom.Element;
            groups?: string | string[];
            handle?: string;
            listeners?: object;
            proxy?: string | object;
            revert?: boolean | object;
        }

        export class Source extends Ext.drag.Item  {
            public dragging?: boolean;
            public beforeDragStart(The?: Ext.drag.Info): boolean;
            public describe(info?: Ext.drag.Info): void;
            public getActiveCls(): void;
            public getActiveOnLongPress(): void;
            public getConstrain(): void;
            public getHandle(): void;
            public getProxy(): void;
            public getRevert(): void;
            public isDragging(): boolean;
            public onDragCancel(): void;
            public onDragEnd(): void;
            public onDragMove(): void;
            public onDragStart(): void;
            public setActiveCls(): void;
            public setActiveOnLongPress(): void;
            public setConstrain(): void;
            public setHandle(): void;
            public setProxy(): void;
            public setRevert(): void;
        }
    }
}