diff options
Diffstat (limited to 'src/client/util/DragManager.ts')
| -rw-r--r-- | src/client/util/DragManager.ts | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts index 6bb44f7d6..6a55f4a00 100644 --- a/src/client/util/DragManager.ts +++ b/src/client/util/DragManager.ts @@ -179,7 +179,8 @@ export namespace DragManager { export function MakeDropTarget( element: HTMLElement, - dropFunc: (e: Event, de: DropEvent) => void + dropFunc: (e: Event, de: DropEvent) => void, + preDropFunc?: (e: Event, de: DropEvent) => void ): DragDropDisposer { if ("canDrop" in element.dataset) { throw new Error( @@ -187,10 +188,13 @@ export namespace DragManager { ); } element.dataset.canDrop = "true"; - const handler = (e: Event) => { dropFunc(e, (e as CustomEvent<DropEvent>).detail); }; + const handler = (e: Event) => dropFunc(e, (e as CustomEvent<DropEvent>).detail); + const preDropHandler = (e: Event) => preDropFunc?.(e, (e as CustomEvent<DropEvent>).detail); element.addEventListener("dashOnDrop", handler); + preDropFunc && element.addEventListener("dashPreDrop", preDropHandler); return () => { element.removeEventListener("dashOnDrop", handler); + preDropFunc && element.removeEventListener("dashPreDrop", preDropHandler); delete element.dataset.canDrop; }; } @@ -425,6 +429,20 @@ export namespace DragManager { }); if (target) { const complete = new DragCompleteEvent(false, dragData); + target.dispatchEvent( + new CustomEvent<DropEvent>("dashPreDrop", { + bubbles: true, + detail: { + x: e.x, + y: e.y, + complete: complete, + shiftKey: e.shiftKey, + altKey: e.altKey, + metaKey: e.metaKey, + ctrlKey: e.ctrlKey + } + }) + ); finishDrag?.(complete); target.dispatchEvent( new CustomEvent<DropEvent>("dashOnDrop", { |