fix: don't handle dragstart event if default is prevented (#1426)

react-dnd · Jul 3, 2019 · 3a70c80 · 3a70c80
1 parent a1fbcd2
commit 3a70c80
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/packages/core/html5-backend/src/HTML5Backend.ts b/packages/core/html5-backend/src/HTML5Backend.ts
@@ -351,13 +351,21 @@ export default class HTML5Backend implements Backend {
 	}
 
 	private handleDragStart(e: DragEvent, sourceId: string) {
+		if (e.defaultPrevented) {
+			return
+		}
+
 		if (!this.dragStartSourceIds) {
 			this.dragStartSourceIds = []
 		}
 		this.dragStartSourceIds.unshift(sourceId)
 	}
 
 	private handleTopDragStart = (e: DragEvent) => {
+		if (e.defaultPrevented) {
+			return
+		}
+
 		const { dragStartSourceIds } = this
 		this.dragStartSourceIds = null