/**
* Finds the node with the supplied React-generated DOM ID.
*
* @param {string} id A React-generated DOM ID.
* @return {?DOMElement} DOM node with the suppled `id`.
* @internal
*/
function getNode(id) {
if (!nodeCache.hasOwnProperty(id)) {
nodeCache[id] =
document.getElementById(id) || // TODO Quit using getElementById.
ReactMount.findReactRenderedDOMNodeSlow(id);
}
var node = nodeCache[id];
if (getID(node) === id) {
return node;
}
return null;
}
getDOMNode: function() {
invariant(
ExecutionEnvironment.canUseDOM,
'getDOMNode(): The DOM is not supported in the current environment.'
);
invariant(
this._lifeCycleState === ComponentLifeCycle.MOUNTED,
'getDOMNode(): A component must be mounted to have a DOM node.'
);
var rootNode = this._rootNode;
if (!rootNode) {
rootNode = document.getElementById(this._rootNodeID);
if (!rootNode) {
// TODO: Log the frequency that we reach this path.
rootNode = ReactMount.findReactRenderedDOMNodeSlow(this._rootNodeID);
}
this._rootNode = rootNode;
}
return rootNode;
},
getCachedNodeByID: function(id) {
return nodeCache[id] ||
(nodeCache[id] =
document.getElementById(id) ||
ReactMount.findReactRenderedDOMNodeSlow(id));
}