Method moveCard

examples/04 Sortable/Stress Test/Container.js:35–52

(id, afterId)

  }

  moveCard(id, afterId) {
    const { cardsById, cardsByIndex } = this.state;

    const card = cardsById[id];
    const afterCard = cardsById[afterId];

    const cardIndex = cardsByIndex.indexOf(card);
    const afterIndex = cardsByIndex.indexOf(afterCard);

    this.scheduleUpdate({
      cardsByIndex: {
        $splice: [
          [cardIndex, 1],
          [afterIndex, 0, card],
        ],
      },
    });
  }

  componentWillUnmount() {
    cancelAnimationFrame(this.requestedFrame);