93 lines
3.0 KiB
JavaScript
93 lines
3.0 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = bindAutoBindMethods;
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/**
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* Copyright 2013-2015, 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 React 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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* Original:
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* https://github.com/facebook/react/blob/6508b1ad273a6f371e8d90ae676e5390199461b4/src/isomorphic/classic/class/ReactClass.js#L650-L713
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*/
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function bindAutoBindMethod(component, method) {
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var boundMethod = method.bind(component);
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boundMethod.__reactBoundContext = component;
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boundMethod.__reactBoundMethod = method;
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boundMethod.__reactBoundArguments = null;
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var componentName = component.constructor.displayName,
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_bind = boundMethod.bind;
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boundMethod.bind = function (newThis) {
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var args = Array.prototype.slice.call(arguments, 1);
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if (newThis !== component && newThis !== null) {
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console.warn('bind(): React component methods may only be bound to the ' + 'component instance. See ' + componentName);
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} else if (!args.length) {
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console.warn('bind(): You are binding a component method to the component. ' + 'React does this for you automatically in a high-performance ' + 'way, so you can safely remove this call. See ' + componentName);
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return boundMethod;
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}
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var reboundMethod = _bind.apply(boundMethod, arguments);
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reboundMethod.__reactBoundContext = component;
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reboundMethod.__reactBoundMethod = method;
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reboundMethod.__reactBoundArguments = args;
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return reboundMethod;
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};
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return boundMethod;
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}
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function bindAutoBindMethodsFromMap(component) {
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for (var autoBindKey in component.__reactAutoBindMap) {
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if (!component.__reactAutoBindMap.hasOwnProperty(autoBindKey)) {
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return;
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}
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// Tweak: skip methods that are already bound.
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// This is to preserve method reference in case it is used
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// as a subscription handler that needs to be detached later.
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if (component.hasOwnProperty(autoBindKey) && component[autoBindKey].__reactBoundContext === component) {
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continue;
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}
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var method = component.__reactAutoBindMap[autoBindKey];
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component[autoBindKey] = bindAutoBindMethod(component, method);
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}
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}
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function bindAutoBindMethods(component) {
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if (component.__reactAutoBindPairs) {
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bindAutoBindMethodsFromArray(component);
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} else if (component.__reactAutoBindMap) {
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bindAutoBindMethodsFromMap(component);
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}
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}
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function bindAutoBindMethodsFromArray(component) {
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var pairs = component.__reactAutoBindPairs;
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if (!pairs) {
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return;
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}
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for (var i = 0; i < pairs.length; i += 2) {
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var autoBindKey = pairs[i];
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if (component.hasOwnProperty(autoBindKey) && component[autoBindKey].__reactBoundContext === component) {
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continue;
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}
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var method = pairs[i + 1];
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component[autoBindKey] = bindAutoBindMethod(component, method);
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}
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}
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