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8 |
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9 | 'use strict';
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10 |
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11 | var _prodInvariant = require('./reactProdInvariant');
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12 |
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13 | var DOMProperty = require('./DOMProperty');
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14 | var ReactDOMComponentFlags = require('./ReactDOMComponentFlags');
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15 |
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16 | var invariant = require('fbjs/lib/invariant');
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17 |
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18 | var ATTR_NAME = DOMProperty.ID_ATTRIBUTE_NAME;
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19 | var Flags = ReactDOMComponentFlags;
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20 |
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21 | var internalInstanceKey = '__reactInternalInstance$' + Math.random().toString(36).slice(2);
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22 |
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23 |
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24 |
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25 |
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26 | function shouldPrecacheNode(node, nodeID) {
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27 | return node.nodeType === 1 && node.getAttribute(ATTR_NAME) === String(nodeID) || node.nodeType === 8 && node.nodeValue === ' react-text: ' + nodeID + ' ' || node.nodeType === 8 && node.nodeValue === ' react-empty: ' + nodeID + ' ';
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28 | }
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29 |
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30 |
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31 |
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32 |
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33 |
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34 |
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35 |
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36 |
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37 | function getRenderedHostOrTextFromComponent(component) {
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38 | var rendered;
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39 | while (rendered = component._renderedComponent) {
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40 | component = rendered;
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41 | }
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42 | return component;
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43 | }
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44 |
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45 |
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46 |
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47 |
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48 |
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49 | function precacheNode(inst, node) {
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50 | var hostInst = getRenderedHostOrTextFromComponent(inst);
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51 | hostInst._hostNode = node;
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52 | node[internalInstanceKey] = hostInst;
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53 | }
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54 |
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55 | function uncacheNode(inst) {
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56 | var node = inst._hostNode;
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57 | if (node) {
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58 | delete node[internalInstanceKey];
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59 | inst._hostNode = null;
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60 | }
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61 | }
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62 |
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63 |
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64 |
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65 |
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66 |
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67 |
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68 |
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69 |
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70 |
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71 |
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72 |
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73 |
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74 |
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75 |
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76 |
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77 | function precacheChildNodes(inst, node) {
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78 | if (inst._flags & Flags.hasCachedChildNodes) {
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79 | return;
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80 | }
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81 | var children = inst._renderedChildren;
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82 | var childNode = node.firstChild;
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83 | outer: for (var name in children) {
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84 | if (!children.hasOwnProperty(name)) {
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85 | continue;
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86 | }
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87 | var childInst = children[name];
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88 | var childID = getRenderedHostOrTextFromComponent(childInst)._domID;
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89 | if (childID === 0) {
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90 |
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91 | continue;
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92 | }
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93 |
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94 | for (; childNode !== null; childNode = childNode.nextSibling) {
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95 | if (shouldPrecacheNode(childNode, childID)) {
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96 | precacheNode(childInst, childNode);
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97 | continue outer;
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98 | }
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99 | }
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100 |
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101 | !false ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Unable to find element with ID %s.', childID) : _prodInvariant('32', childID) : void 0;
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102 | }
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103 | inst._flags |= Flags.hasCachedChildNodes;
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104 | }
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105 |
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106 |
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107 |
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108 |
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109 |
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110 | function getClosestInstanceFromNode(node) {
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111 | if (node[internalInstanceKey]) {
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112 | return node[internalInstanceKey];
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113 | }
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114 |
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115 |
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116 | var parents = [];
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117 | while (!node[internalInstanceKey]) {
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118 | parents.push(node);
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119 | if (node.parentNode) {
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120 | node = node.parentNode;
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121 | } else {
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122 |
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123 |
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124 | return null;
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125 | }
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126 | }
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127 |
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128 | var closest;
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129 | var inst;
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130 | for (; node && (inst = node[internalInstanceKey]); node = parents.pop()) {
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131 | closest = inst;
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132 | if (parents.length) {
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133 | precacheChildNodes(inst, node);
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134 | }
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135 | }
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136 |
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137 | return closest;
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138 | }
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139 |
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140 |
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141 |
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142 |
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143 |
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144 | function getInstanceFromNode(node) {
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145 | var inst = getClosestInstanceFromNode(node);
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146 | if (inst != null && inst._hostNode === node) {
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147 | return inst;
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148 | } else {
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149 | return null;
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150 | }
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151 | }
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152 |
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153 |
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154 |
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155 |
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156 |
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157 | function getNodeFromInstance(inst) {
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158 |
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159 |
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160 | !(inst._hostNode !== undefined) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'getNodeFromInstance: Invalid argument.') : _prodInvariant('33') : void 0;
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161 |
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162 | if (inst._hostNode) {
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163 | return inst._hostNode;
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164 | }
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165 |
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166 |
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167 | var parents = [];
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168 | while (!inst._hostNode) {
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169 | parents.push(inst);
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170 | !inst._hostParent ? process.env.NODE_ENV !== 'production' ? invariant(false, 'React DOM tree root should always have a node reference.') : _prodInvariant('34') : void 0;
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171 | inst = inst._hostParent;
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172 | }
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173 |
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174 |
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175 |
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176 | for (; parents.length; inst = parents.pop()) {
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177 | precacheChildNodes(inst, inst._hostNode);
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178 | }
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179 |
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180 | return inst._hostNode;
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181 | }
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182 |
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183 | var ReactDOMComponentTree = {
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184 | getClosestInstanceFromNode: getClosestInstanceFromNode,
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185 | getInstanceFromNode: getInstanceFromNode,
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186 | getNodeFromInstance: getNodeFromInstance,
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187 | precacheChildNodes: precacheChildNodes,
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188 | precacheNode: precacheNode,
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189 | uncacheNode: uncacheNode
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190 | };
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191 |
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192 | module.exports = ReactDOMComponentTree; |
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