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Pete Hunt
58de758a32
If we reconcile components higher in the hierarchy they will likely reconcile components lower in the hierarchy. If we sort by depth then when we reach those components there will be no more pending state or props and it will no op.
94 lines
2.7 KiB
JavaScript
94 lines
2.7 KiB
JavaScript
/**
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* Copyright 2013 Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @providesModule ReactTextComponent
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* @typechecks static-only
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*/
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"use strict";
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var ReactComponent = require('ReactComponent');
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var ReactMount = require('ReactMount');
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var escapeTextForBrowser = require('escapeTextForBrowser');
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var mixInto = require('mixInto');
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/**
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* Text nodes violate a couple assumptions that React makes about components:
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*
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* - When mounting text into the DOM, adjacent text nodes are merged.
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* - Text nodes cannot be assigned a React root ID.
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*
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* This component is used to wrap strings in elements so that they can undergo
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* the same reconciliation that is applied to elements.
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*
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* TODO: Investigate representing React components in the DOM with text nodes.
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*
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* @class ReactTextComponent
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* @extends ReactComponent
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* @internal
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*/
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var ReactTextComponent = function(initialText) {
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this.construct({text: initialText});
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};
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mixInto(ReactTextComponent, ReactComponent.Mixin);
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mixInto(ReactTextComponent, {
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/**
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* Creates the markup for this text node. This node is not intended to have
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* any features besides containing text content.
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*
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* @param {string} rootID DOM ID of the root node.
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* @param {ReactReconcileTransaction} transaction
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* @param {number} mountDepth number of components in the owner hierarchy
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* @return {string} Markup for this text node.
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* @internal
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*/
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mountComponent: function(rootID, transaction, mountDepth) {
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ReactComponent.Mixin.mountComponent.call(
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this,
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rootID,
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transaction,
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mountDepth
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);
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return (
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'<span ' + ReactMount.ATTR_NAME + '="' + rootID + '">' +
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escapeTextForBrowser(this.props.text) +
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'</span>'
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);
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},
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/**
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* Updates this component by updating the text content.
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*
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* @param {object} nextProps Contains the next text content.
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* @param {ReactReconcileTransaction} transaction
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* @internal
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*/
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receiveProps: function(nextProps, transaction) {
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if (nextProps.text !== this.props.text) {
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this.props.text = nextProps.text;
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ReactComponent.DOMIDOperations.updateTextContentByID(
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this._rootNodeID,
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nextProps.text
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);
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}
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}
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});
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module.exports = ReactTextComponent;
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