Method onCreate

src/component/timeline/SliderTimelineView.ts:586–591

(pointer: TimelineSymbol)

        const callback = {
            onCreate(pointer: TimelineSymbol) {
                pointer.draggable = true;
                pointer.drift = bind(me._handlePointerDrag, me);
                pointer.ondragend = bind(me._handlePointerDragend, me);
                pointerMoveTo(pointer, me._progressLine, currentIndex, axis, timelineModel, true);
            },
            onUpdate(pointer: TimelineSymbol) {
                pointerMoveTo(pointer, me._progressLine, currentIndex, axis, timelineModel);
            }