'use strict';
var Doctype = require('../common/doctype');
var nodeTypes = {
element: 1,
text: 3,
cdata: 4,
comment: 8
};
var nodePropertyShorthands = {
tagName: 'name',
childNodes: 'children',
parentNode: 'parent',
previousSibling: 'prev',
nextSibling: 'next',
nodeValue: 'data'
};
var Node = function (props) {
for (var key in props) {
if (props.hasOwnProperty(key))
this[key] = props[key];
}
};
Node.prototype = {
get firstChild() {
var children = this.children;
return children && children[0] || null;
},
get lastChild() {
var children = this.children;
return children && children[children.length - 1] || null;
},
get nodeType() {
return nodeTypes[this.type] || nodeTypes.element;
}
};
Object.keys(nodePropertyShorthands).forEach(function (key) {
var shorthand = nodePropertyShorthands[key];
Object.defineProperty(Node.prototype, key, {
get: function () {
return this[shorthand] || null;
},
set: function (val) {
this[shorthand] = val;
return val;
}
});
});
exports.createDocument =
exports.createDocumentFragment = function () {
return new Node({
type: 'root',
name: 'root',
parent: null,
prev: null,
next: null,
children: []
});
};
exports.createElement = function (tagName, namespaceURI, attrs) {
var attribs = {},
attribsNamespace = {},
attribsPrefix = {};
for (var i = 0; i < attrs.length; i++) {
var attrName = attrs[i].name;
attribs[attrName] = attrs[i].value;
attribsNamespace[attrName] = attrs[i].namespace;
attribsPrefix[attrName] = attrs[i].prefix;
}
return new Node({
type: tagName === 'script' || tagName === 'style' ? tagName : 'tag',
name: tagName,
namespace: namespaceURI,
attribs: attribs,
'x-attribsNamespace': attribsNamespace,
'x-attribsPrefix': attribsPrefix,
children: [],
parent: null,
prev: null,
next: null
});
};
exports.createCommentNode = function (data) {
return new Node({
type: 'comment',
data: data,
parent: null,
prev: null,
next: null
});
};
var createTextNode = function (value) {
return new Node({
type: 'text',
data: value,
parent: null,
prev: null,
next: null
});
};
exports.setDocumentType = function (document, name, publicId, systemId) {
var data = Doctype.serializeContent(name, publicId, systemId),
doctypeNode = null;
for (var i = 0; i < document.children.length; i++) {
if (document.children[i].type === 'directive' && document.children[i].name === '!doctype') {
doctypeNode = document.children[i];
break;
}
}
if (doctypeNode) {
doctypeNode.data = data;
doctypeNode['x-name'] = name;
doctypeNode['x-publicId'] = publicId;
doctypeNode['x-systemId'] = systemId;
}
else {
appendChild(document, new Node({
type: 'directive',
name: '!doctype',
data: data,
'x-name': name,
'x-publicId': publicId,
'x-systemId': systemId
}));
}
};
exports.setQuirksMode = function (document) {
document.quirksMode = true;
};
exports.isQuirksMode = function (document) {
return document.quirksMode;
};
var appendChild = exports.appendChild = function (parentNode, newNode) {
var prev = parentNode.children[parentNode.children.length - 1];
if (prev) {
prev.next = newNode;
newNode.prev = prev;
}
parentNode.children.push(newNode);
newNode.parent = parentNode;
};
var insertBefore = exports.insertBefore = function (parentNode, newNode, referenceNode) {
var insertionIdx = parentNode.children.indexOf(referenceNode),
prev = referenceNode.prev;
if (prev) {
prev.next = newNode;
newNode.prev = prev;
}
referenceNode.prev = newNode;
newNode.next = referenceNode;
parentNode.children.splice(insertionIdx, 0, newNode);
newNode.parent = parentNode;
};
exports.detachNode = function (node) {
if (node.parent) {
var idx = node.parent.children.indexOf(node),
prev = node.prev,
next = node.next;
node.prev = null;
node.next = null;
if (prev)
prev.next = next;
if (next)
next.prev = prev;
node.parent.children.splice(idx, 1);
node.parent = null;
}
};
exports.insertText = function (parentNode, text) {
var lastChild = parentNode.children[parentNode.children.length - 1];
if (lastChild && lastChild.type === 'text')
lastChild.data += text;
else
appendChild(parentNode, createTextNode(text));
};
exports.insertTextBefore = function (parentNode, text, referenceNode) {
var prevNode = parentNode.children[parentNode.children.indexOf(referenceNode) - 1];
if (prevNode && prevNode.type === 'text')
prevNode.data += text;
else
insertBefore(parentNode, createTextNode(text), referenceNode);
};
exports.adoptAttributes = function (recipientNode, attrs) {
for (var i = 0; i < attrs.length; i++) {
var attrName = attrs[i].name;
if (typeof recipientNode.attribs[attrName] === 'undefined') {
recipientNode.attribs[attrName] = attrs[i].value;
recipientNode['x-attribsNamespace'][attrName] = attrs[i].namespace;
recipientNode['x-attribsPrefix'][attrName] = attrs[i].prefix;
}
}
};
exports.getFirstChild = function (node) {
return node.children[0];
};
exports.getChildNodes = function (node) {
return node.children;
};
exports.getParentNode = function (node) {
return node.parent;
};
exports.getAttrList = function (node) {
var attrList = [];
for (var name in node.attribs) {
if (node.attribs.hasOwnProperty(name)) {
attrList.push({
name: name,
value: node.attribs[name],
namespace: node['x-attribsNamespace'][name],
prefix: node['x-attribsPrefix'][name]
});
}
}
return attrList;
};
exports.getTagName = function (element) {
return element.name;
};
exports.getNamespaceURI = function (element) {
return element.namespace;
};
exports.getTextNodeContent = function (textNode) {
return textNode.data;
};
exports.getCommentNodeContent = function (commentNode) {
return commentNode.data;
};
exports.getDocumentTypeNodeName = function (doctypeNode) {
return doctypeNode['x-name'];
};
exports.getDocumentTypeNodePublicId = function (doctypeNode) {
return doctypeNode['x-publicId'];
};
exports.getDocumentTypeNodeSystemId = function (doctypeNode) {
return doctypeNode['x-systemId'];
};
exports.isTextNode = function (node) {
return node.type === 'text';
};
exports.isCommentNode = function (node) {
return node.type === 'comment';
};
exports.isDocumentTypeNode = function (node) {
return node.type === 'directive' && node.name === '!doctype';
};
exports.isElementNode = function (node) {
return !!node.attribs;
};
