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author | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
commit | de98e0b232509d5f40c135d540a70e415272ff85 (patch) | |
tree | a79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/react-dom/lib/ReactDOMTextComponent.js | |
parent | e0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff) | |
download | wallet-core-de98e0b232509d5f40c135d540a70e415272ff85.tar.xz |
node_modules
Diffstat (limited to 'node_modules/react-dom/lib/ReactDOMTextComponent.js')
-rw-r--r-- | node_modules/react-dom/lib/ReactDOMTextComponent.js | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/node_modules/react-dom/lib/ReactDOMTextComponent.js b/node_modules/react-dom/lib/ReactDOMTextComponent.js new file mode 100644 index 000000000..73b4026f3 --- /dev/null +++ b/node_modules/react-dom/lib/ReactDOMTextComponent.js @@ -0,0 +1,163 @@ +/** + * 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 _prodInvariant = require('./reactProdInvariant'), + _assign = require('object-assign'); + +var DOMChildrenOperations = require('./DOMChildrenOperations'); +var DOMLazyTree = require('./DOMLazyTree'); +var ReactDOMComponentTree = require('./ReactDOMComponentTree'); + +var escapeTextContentForBrowser = require('./escapeTextContentForBrowser'); +var invariant = require('fbjs/lib/invariant'); +var validateDOMNesting = require('./validateDOMNesting'); + +/** + * Text nodes violate a couple assumptions that React makes about components: + * + * - When mounting text into the DOM, adjacent text nodes are merged. + * - Text nodes cannot be assigned a React root ID. + * + * This component is used to wrap strings between comment nodes so that they + * can undergo the same reconciliation that is applied to elements. + * + * TODO: Investigate representing React components in the DOM with text nodes. + * + * @class ReactDOMTextComponent + * @extends ReactComponent + * @internal + */ +var ReactDOMTextComponent = function (text) { + // TODO: This is really a ReactText (ReactNode), not a ReactElement + this._currentElement = text; + this._stringText = '' + text; + // ReactDOMComponentTree uses these: + this._hostNode = null; + this._hostParent = null; + + // Properties + this._domID = 0; + this._mountIndex = 0; + this._closingComment = null; + this._commentNodes = null; +}; + +_assign(ReactDOMTextComponent.prototype, { + + /** + * Creates the markup for this text node. This node is not intended to have + * any features besides containing text content. + * + * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction + * @return {string} Markup for this text node. + * @internal + */ + mountComponent: function (transaction, hostParent, hostContainerInfo, context) { + if (process.env.NODE_ENV !== 'production') { + var parentInfo; + if (hostParent != null) { + parentInfo = hostParent._ancestorInfo; + } else if (hostContainerInfo != null) { + parentInfo = hostContainerInfo._ancestorInfo; + } + if (parentInfo) { + // parentInfo should always be present except for the top-level + // component when server rendering + validateDOMNesting(null, this._stringText, this, parentInfo); + } + } + + var domID = hostContainerInfo._idCounter++; + var openingValue = ' react-text: ' + domID + ' '; + var closingValue = ' /react-text '; + this._domID = domID; + this._hostParent = hostParent; + if (transaction.useCreateElement) { + var ownerDocument = hostContainerInfo._ownerDocument; + var openingComment = ownerDocument.createComment(openingValue); + var closingComment = ownerDocument.createComment(closingValue); + var lazyTree = DOMLazyTree(ownerDocument.createDocumentFragment()); + DOMLazyTree.queueChild(lazyTree, DOMLazyTree(openingComment)); + if (this._stringText) { + DOMLazyTree.queueChild(lazyTree, DOMLazyTree(ownerDocument.createTextNode(this._stringText))); + } + DOMLazyTree.queueChild(lazyTree, DOMLazyTree(closingComment)); + ReactDOMComponentTree.precacheNode(this, openingComment); + this._closingComment = closingComment; + return lazyTree; + } else { + var escapedText = escapeTextContentForBrowser(this._stringText); + + if (transaction.renderToStaticMarkup) { + // Normally we'd wrap this between comment nodes for the reasons stated + // above, but since this is a situation where React won't take over + // (static pages), we can simply return the text as it is. + return escapedText; + } + + return '<!--' + openingValue + '-->' + escapedText + '<!--' + closingValue + '-->'; + } + }, + + /** + * Updates this component by updating the text content. + * + * @param {ReactText} nextText The next text content + * @param {ReactReconcileTransaction} transaction + * @internal + */ + receiveComponent: function (nextText, transaction) { + if (nextText !== this._currentElement) { + this._currentElement = nextText; + var nextStringText = '' + nextText; + if (nextStringText !== this._stringText) { + // TODO: Save this as pending props and use performUpdateIfNecessary + // and/or updateComponent to do the actual update for consistency with + // other component types? + this._stringText = nextStringText; + var commentNodes = this.getHostNode(); + DOMChildrenOperations.replaceDelimitedText(commentNodes[0], commentNodes[1], nextStringText); + } + } + }, + + getHostNode: function () { + var hostNode = this._commentNodes; + if (hostNode) { + return hostNode; + } + if (!this._closingComment) { + var openingComment = ReactDOMComponentTree.getNodeFromInstance(this); + var node = openingComment.nextSibling; + while (true) { + !(node != null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Missing closing comment for text component %s', this._domID) : _prodInvariant('67', this._domID) : void 0; + if (node.nodeType === 8 && node.nodeValue === ' /react-text ') { + this._closingComment = node; + break; + } + node = node.nextSibling; + } + } + hostNode = [this._hostNode, this._closingComment]; + this._commentNodes = hostNode; + return hostNode; + }, + + unmountComponent: function () { + this._closingComment = null; + this._commentNodes = null; + ReactDOMComponentTree.uncacheNode(this); + } + +}); + +module.exports = ReactDOMTextComponent;
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