hasGesture method
Implementation
bool hasGesture() {
if (this is DragGesture && (this as DragGesture).enableDrag) return true;
if (this is TapGesture && (this as TapGesture).enableTab) return true;
if (this is MouseGesture && (this as MouseGesture).enableMouseGesture)
return true;
return false;
}