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