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Diffstat (limited to 'node_modules/react-dom/lib/ReactRef.js')
-rw-r--r-- | node_modules/react-dom/lib/ReactRef.js | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/node_modules/react-dom/lib/ReactRef.js b/node_modules/react-dom/lib/ReactRef.js deleted file mode 100644 index 055e632c7..000000000 --- a/node_modules/react-dom/lib/ReactRef.js +++ /dev/null @@ -1,88 +0,0 @@ -/** - * Copyright 2013-present, 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. - * - * - */ - -'use strict'; - -var ReactOwner = require('./ReactOwner'); - -var ReactRef = {}; - -function attachRef(ref, component, owner) { - if (typeof ref === 'function') { - ref(component.getPublicInstance()); - } else { - // Legacy ref - ReactOwner.addComponentAsRefTo(component, ref, owner); - } -} - -function detachRef(ref, component, owner) { - if (typeof ref === 'function') { - ref(null); - } else { - // Legacy ref - ReactOwner.removeComponentAsRefFrom(component, ref, owner); - } -} - -ReactRef.attachRefs = function (instance, element) { - if (element === null || typeof element !== 'object') { - return; - } - var ref = element.ref; - if (ref != null) { - attachRef(ref, instance, element._owner); - } -}; - -ReactRef.shouldUpdateRefs = function (prevElement, nextElement) { - // If either the owner or a `ref` has changed, make sure the newest owner - // has stored a reference to `this`, and the previous owner (if different) - // has forgotten the reference to `this`. We use the element instead - // of the public this.props because the post processing cannot determine - // a ref. The ref conceptually lives on the element. - - // TODO: Should this even be possible? The owner cannot change because - // it's forbidden by shouldUpdateReactComponent. The ref can change - // if you swap the keys of but not the refs. Reconsider where this check - // is made. It probably belongs where the key checking and - // instantiateReactComponent is done. - - var prevRef = null; - var prevOwner = null; - if (prevElement !== null && typeof prevElement === 'object') { - prevRef = prevElement.ref; - prevOwner = prevElement._owner; - } - - var nextRef = null; - var nextOwner = null; - if (nextElement !== null && typeof nextElement === 'object') { - nextRef = nextElement.ref; - nextOwner = nextElement._owner; - } - - return prevRef !== nextRef || - // If owner changes but we have an unchanged function ref, don't update refs - typeof nextRef === 'string' && nextOwner !== prevOwner; -}; - -ReactRef.detachRefs = function (instance, element) { - if (element === null || typeof element !== 'object') { - return; - } - var ref = element.ref; - if (ref != null) { - detachRef(ref, instance, element._owner); - } -}; - -module.exports = ReactRef;
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