bringNodeToFront method
Brings a node to the front of the z-order (renders on top of all other nodes).
Implementation
void bringNodeToFront(String nodeId) {
final node = _nodes[nodeId];
if (node != null) {
runInAction(() {
final maxZIndex = _nodes.values
.map((n) => n.zIndex.value)
.fold(0, math.max);
node.zIndex.value = maxZIndex + 1;
});
}
}