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mweststrate/onStopDrag.ts

Created August 31, 2018 17:56
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onStopDrag.ts
onStopDrag = (id, { dx, dy }) => {
// we capture this outside the propose closure!
const baseBox = this.client.currentState.boxes.find(b => b.id === id);
this.client.propose(draft => {
const box = draft.boxes.find(b => b.id === id);
if (box.x !== baseBox.x || box.y !== baseBox.y)
throw "Somebody else already dragged this box!";
box.x += dx;
box.y += dy;
});
};
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