react app

react-app/node_modules/react/lib/LocalEventTrapMixin.js

@@ -0,0 +1,53 @@
+/**
+ * Copyright 2014-2015, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule LocalEventTrapMixin
+ */
+
+'use strict';
+
+var ReactBrowserEventEmitter = require("./ReactBrowserEventEmitter");
+
+var accumulateInto = require("./accumulateInto");
+var forEachAccumulated = require("./forEachAccumulated");
+var invariant = require("./invariant");
+
+function remove(event) {
+  event.remove();
+}
+
+var LocalEventTrapMixin = {
+  trapBubbledEvent:function(topLevelType, handlerBaseName) {
+    ("production" !== process.env.NODE_ENV ? invariant(this.isMounted(), 'Must be mounted to trap events') : invariant(this.isMounted()));
+    // If a component renders to null or if another component fatals and causes
+    // the state of the tree to be corrupted, `node` here can be null.
+    var node = this.getDOMNode();
+    ("production" !== process.env.NODE_ENV ? invariant(
+      node,
+      'LocalEventTrapMixin.trapBubbledEvent(...): Requires node to be rendered.'
+    ) : invariant(node));
+    var listener = ReactBrowserEventEmitter.trapBubbledEvent(
+      topLevelType,
+      handlerBaseName,
+      node
+    );
+    this._localEventListeners =
+      accumulateInto(this._localEventListeners, listener);
+  },
+
+  // trapCapturedEvent would look nearly identical. We don't implement that
+  // method because it isn't currently needed.
+
+  componentWillUnmount:function() {
+    if (this._localEventListeners) {
+      forEachAccumulated(this._localEventListeners, remove);
+    }
+  }
+};
+
+module.exports = LocalEventTrapMixin;