1 files changed, 13 insertions, 0 deletions
diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts
index 323908302..f9f6b05c0 100644
--- a/src/client/util/DragManager.ts
+++ b/src/client/util/DragManager.ts
@@ -288,6 +288,15 @@ export namespace DragManager {
         [id: string]: any;
     }
 
+    // for column dragging in schema view
+    export class ColumnDragData {
+        constructor(colKey: string) {
+            this.colKey = colKey;
+        }
+        colKey: string;
+        [id: string]: any;
+    }
+
     export function StartLinkDrag(ele: HTMLElement, dragData: LinkDragData, downX: number, downY: number, options?: DragOptions) {
         StartDrag([ele], dragData, downX, downY, options);
     }
@@ -296,6 +305,10 @@ export namespace DragManager {
         StartDrag([ele], dragData, downX, downY, options);
     }
 
+    export function StartColumnDrag(ele: HTMLElement, dragData: ColumnDragData, downX: number, downY: number, options?:DragOptions) {
+        StartDrag([ele], dragData, downX, downY, options);
+    }
+
     export let AbortDrag: () => void = emptyFunction;
 
     function StartDrag(eles: HTMLElement[], dragData: { [id: string]: any }, downX: number, downY: number, options?: DragOptions, finishDrag?: (dropData: { [id: string]: any }) => void) {