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+'use strict';
+
+var DOCUMENT_MODE = require('../common/html').DOCUMENT_MODE;
+
+//Node construction
+exports.createDocument = function () {
+ return {
+ nodeName: '#document',
+ mode: DOCUMENT_MODE.NO_QUIRKS,
+ childNodes: []
+ };
+};
+
+exports.createDocumentFragment = function () {
+ return {
+ nodeName: '#document-fragment',
+ childNodes: []
+ };
+};
+
+exports.createElement = function (tagName, namespaceURI, attrs) {
+ return {
+ nodeName: tagName,
+ tagName: tagName,
+ attrs: attrs,
+ namespaceURI: namespaceURI,
+ childNodes: [],
+ parentNode: null
+ };
+};
+
+exports.createCommentNode = function (data) {
+ return {
+ nodeName: '#comment',
+ data: data,
+ parentNode: null
+ };
+};
+
+var createTextNode = function (value) {
+ return {
+ nodeName: '#text',
+ value: value,
+ parentNode: null
+ };
+};
+
+
+//Tree mutation
+var appendChild = exports.appendChild = function (parentNode, newNode) {
+ parentNode.childNodes.push(newNode);
+ newNode.parentNode = parentNode;
+};
+
+var insertBefore = exports.insertBefore = function (parentNode, newNode, referenceNode) {
+ var insertionIdx = parentNode.childNodes.indexOf(referenceNode);
+
+ parentNode.childNodes.splice(insertionIdx, 0, newNode);
+ newNode.parentNode = parentNode;
+};
+
+exports.setTemplateContent = function (templateElement, contentElement) {
+ templateElement.content = contentElement;
+};
+
+exports.getTemplateContent = function (templateElement) {
+ return templateElement.content;
+};
+
+exports.setDocumentType = function (document, name, publicId, systemId) {
+ var doctypeNode = null;
+
+ for (var i = 0; i < document.childNodes.length; i++) {
+ if (document.childNodes[i].nodeName === '#documentType') {
+ doctypeNode = document.childNodes[i];
+ break;
+ }
+ }
+
+ if (doctypeNode) {
+ doctypeNode.name = name;
+ doctypeNode.publicId = publicId;
+ doctypeNode.systemId = systemId;
+ }
+
+ else {
+ appendChild(document, {
+ nodeName: '#documentType',
+ name: name,
+ publicId: publicId,
+ systemId: systemId
+ });
+ }
+};
+
+exports.setDocumentMode = function (document, mode) {
+ document.mode = mode;
+};
+
+exports.getDocumentMode = function (document) {
+ return document.mode;
+};
+
+exports.detachNode = function (node) {
+ if (node.parentNode) {
+ var idx = node.parentNode.childNodes.indexOf(node);
+
+ node.parentNode.childNodes.splice(idx, 1);
+ node.parentNode = null;
+ }
+};
+
+exports.insertText = function (parentNode, text) {
+ if (parentNode.childNodes.length) {
+ var prevNode = parentNode.childNodes[parentNode.childNodes.length - 1];
+
+ if (prevNode.nodeName === '#text') {
+ prevNode.value += text;
+ return;
+ }
+ }
+
+ appendChild(parentNode, createTextNode(text));
+};
+
+exports.insertTextBefore = function (parentNode, text, referenceNode) {
+ var prevNode = parentNode.childNodes[parentNode.childNodes.indexOf(referenceNode) - 1];
+
+ if (prevNode && prevNode.nodeName === '#text')
+ prevNode.value += text;
+ else
+ insertBefore(parentNode, createTextNode(text), referenceNode);
+};
+
+exports.adoptAttributes = function (recipient, attrs) {
+ var recipientAttrsMap = [];
+
+ for (var i = 0; i < recipient.attrs.length; i++)
+ recipientAttrsMap.push(recipient.attrs[i].name);
+
+ for (var j = 0; j < attrs.length; j++) {
+ if (recipientAttrsMap.indexOf(attrs[j].name) === -1)
+ recipient.attrs.push(attrs[j]);
+ }
+};
+
+
+//Tree traversing
+exports.getFirstChild = function (node) {
+ return node.childNodes[0];
+};
+
+exports.getChildNodes = function (node) {
+ return node.childNodes;
+};
+
+exports.getParentNode = function (node) {
+ return node.parentNode;
+};
+
+exports.getAttrList = function (element) {
+ return element.attrs;
+};
+
+//Node data
+exports.getTagName = function (element) {
+ return element.tagName;
+};
+
+exports.getNamespaceURI = function (element) {
+ return element.namespaceURI;
+};
+
+exports.getTextNodeContent = function (textNode) {
+ return textNode.value;
+};
+
+exports.getCommentNodeContent = function (commentNode) {
+ return commentNode.data;
+};
+
+exports.getDocumentTypeNodeName = function (doctypeNode) {
+ return doctypeNode.name;
+};
+
+exports.getDocumentTypeNodePublicId = function (doctypeNode) {
+ return doctypeNode.publicId;
+};
+
+exports.getDocumentTypeNodeSystemId = function (doctypeNode) {
+ return doctypeNode.systemId;
+};
+
+//Node types
+exports.isTextNode = function (node) {
+ return node.nodeName === '#text';
+};
+
+exports.isCommentNode = function (node) {
+ return node.nodeName === '#comment';
+};
+
+exports.isDocumentTypeNode = function (node) {
+ return node.nodeName === '#documentType';
+};
+
+exports.isElementNode = function (node) {
+ return !!node.tagName;
+};