1794 lines
64 KiB
JavaScript
1794 lines
64 KiB
JavaScript
/*
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* Copyright (C) 2007-2019 Diego Perini
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* All rights reserved.
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*
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* nwsapi.js - Fast CSS Selectors API Engine
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*
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* Author: Diego Perini <diego.perini at gmail com>
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* Version: 2.2.3
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* Created: 20070722
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* Release: 20230322
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*
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* License:
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* http://javascript.nwbox.com/nwsapi/MIT-LICENSE
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* Download:
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* http://javascript.nwbox.com/nwsapi/nwsapi.js
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*/
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(function Export(global, factory) {
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'use strict';
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if (typeof module == 'object' && typeof exports == 'object') {
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module.exports = factory;
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} else if (typeof define == 'function' && define['amd']) {
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define(factory);
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} else {
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global.NW || (global.NW = { });
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global.NW.Dom = factory(global, Export);
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}
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})(this, function Factory(global, Export) {
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var version = 'nwsapi-2.2.3',
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doc = global.document,
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root = doc.documentElement,
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slice = Array.prototype.slice,
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HSP = '[\\x20\\t]',
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VSP = '[\\r\\n\\f]',
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WSP = '[\\x20\\t\\r\\n\\f]',
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CFG = {
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// extensions
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operators: '[~*^$|]=|=',
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combinators: '[\\x20\\t>+~](?=[^>+~])'
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},
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NOT = {
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// not enclosed in double/single/parens/square
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double_enc: '(?=(?:[^"]*["][^"]*["])*[^"]*$)',
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single_enc: "(?=(?:[^']*['][^']*['])*[^']*$)",
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parens_enc: '(?![^\\x28]*\\x29)',
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square_enc: '(?![^\\x5b]*\\x5d)'
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},
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REX = {
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// regular expressions
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HasEscapes: RegExp('\\\\'),
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HexNumbers: RegExp('^[0-9a-fA-F]'),
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EscOrQuote: RegExp('^\\\\|[\\x22\\x27]'),
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RegExpChar: RegExp('(?!\\\\)[\\\\^$.,*+?()[\\]{}|\\/]', 'g'),
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TrimSpaces: RegExp('^' + WSP + '+|' + WSP + '+$|' + VSP, 'g'),
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SplitGroup: RegExp('(\\([^)]*\\)|\\[[^[]*\\]|\\\\.|[^,])+', 'g'),
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CommaGroup: RegExp('(\\s*,\\s*)' + NOT.square_enc + NOT.parens_enc, 'g'),
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FixEscapes: RegExp('\\\\([0-9a-fA-F]{1,6}' + WSP + '?|.)|([\\x22\\x27])', 'g'),
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CombineWSP: RegExp('[\\n\\r\\f\\x20]+' + NOT.single_enc + NOT.double_enc, 'g'),
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TabCharWSP: RegExp('(\\x20?\\t+\\x20?)' + NOT.single_enc + NOT.double_enc, 'g'),
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PseudosWSP: RegExp('\\s+([-+])\\s+' + NOT.square_enc, 'g')
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},
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STD = {
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combinator: RegExp('\\s?([>+~])\\s?', 'g'),
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apimethods: RegExp('^(?:[a-z]+|\\*)\\|', 'i'),
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namespaces: RegExp('(\\*|[a-z]+)\\|[-a-z]+', 'i')
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},
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GROUPS = {
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// pseudo-classes requiring parameters
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linguistic: '(dir|lang)\\x28\\s?([-\\w]{2,})\\s?(?:\\x29|$)',
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logicalsel: '(is|where|matches|not)\\x28\\s?([^\\[]*\\[[^\\]]*\\]|[^\\(]*\\([^\\)]*\\)|[^()]*)\\s?(?:\\x29|$)',
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treestruct: '(nth(?:-last)?(?:-child|-of-type))(?:\\x28\\s?(even|odd|(?:[-+]?\\d*)(?:n\\s?[-+]?\\s?\\d*)?)\\s?(?:\\x29|$))',
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// pseudo-classes not requiring parameters
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locationpc: '(any-link|link|visited|target)\\b',
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useraction: '(hover|active|focus-within|focus)\\b',
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structural: '(root|empty|(?:(?:first|last|only)(?:-child|-of-type)))\\b',
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inputstate: '(enabled|disabled|read-only|read-write|placeholder-shown|default)\\b',
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inputvalue: '(checked|indeterminate|required|optional|valid|invalid|in-range|out-of-range)\\b',
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// pseudo-classes for parsing only selectors
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pseudo_nop: '(autofill|-webkit-autofill)\\b',
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// pseudo-elements starting with single colon (:)
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pseudo_sng: '(after|before|first-letter|first-line)\\b',
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// pseudo-elements starting with double colon (::)
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pseudo_dbl: ':(after|before|first-letter|first-line|selection|placeholder|-webkit-[-a-zA-Z0-9]{2,})\\b'
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},
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Patterns = {
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// pseudo-classes
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treestruct: RegExp('^:(?:' + GROUPS.treestruct + ')(.*)', 'i'),
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structural: RegExp('^:(?:' + GROUPS.structural + ')(.*)', 'i'),
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linguistic: RegExp('^:(?:' + GROUPS.linguistic + ')(.*)', 'i'),
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useraction: RegExp('^:(?:' + GROUPS.useraction + ')(.*)', 'i'),
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inputstate: RegExp('^:(?:' + GROUPS.inputstate + ')(.*)', 'i'),
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inputvalue: RegExp('^:(?:' + GROUPS.inputvalue + ')(.*)', 'i'),
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locationpc: RegExp('^:(?:' + GROUPS.locationpc + ')(.*)', 'i'),
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logicalsel: RegExp('^:(?:' + GROUPS.logicalsel + ')(.*)', 'i'),
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pseudo_nop: RegExp('^:(?:' + GROUPS.pseudo_nop + ')(.*)', 'i'),
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pseudo_sng: RegExp('^:(?:' + GROUPS.pseudo_sng + ')(.*)', 'i'),
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pseudo_dbl: RegExp('^:(?:' + GROUPS.pseudo_dbl + ')(.*)', 'i'),
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// combinator symbols
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children: RegExp('^' + WSP + '?\\>' + WSP + '?(.*)'),
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adjacent: RegExp('^' + WSP + '?\\+' + WSP + '?(.*)'),
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relative: RegExp('^' + WSP + '?\\~' + WSP + '?(.*)'),
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ancestor: RegExp('^' + WSP + '+(.*)'),
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// universal & namespace
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universal: RegExp('^\\*(.*)'),
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namespace: RegExp('^(\\w+|\\*)?\\|(.*)')
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},
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// regexp to aproximate detection of RTL languages (Arabic)
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RTL = RegExp('^[\\u0591-\\u08ff\\ufb1d-\\ufdfd\\ufe70-\\ufefc ]+$'),
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// emulate firefox error strings
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qsNotArgs = 'Not enough arguments',
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qsInvalid = ' is not a valid selector',
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// detect structural pseudo-classes in selectors
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reNthElem = RegExp('(:nth(?:-last)?-child)', 'i'),
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reNthType = RegExp('(:nth(?:-last)?-of-type)', 'i'),
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// placeholder for global regexp
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reOptimizer,
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reValidator,
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// special handling configuration flags
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Config = {
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IDS_DUPES: true,
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NONDIGITS: true,
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LOGERRORS: true,
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VERBOSITY: true
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},
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NAMESPACE,
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QUIRKS_MODE,
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HTML_DOCUMENT,
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ATTR_STD_OPS = {
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'=': 1, '^=': 1, '$=': 1, '|=': 1, '*=': 1, '~=': 1
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},
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HTML_TABLE = {
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'accept': 1, 'accept-charset': 1, 'align': 1, 'alink': 1, 'axis': 1,
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'bgcolor': 1, 'charset': 1, 'checked': 1, 'clear': 1, 'codetype': 1, 'color': 1,
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'compact': 1, 'declare': 1, 'defer': 1, 'dir': 1, 'direction': 1, 'disabled': 1,
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'enctype': 1, 'face': 1, 'frame': 1, 'hreflang': 1, 'http-equiv': 1, 'lang': 1,
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'language': 1, 'link': 1, 'media': 1, 'method': 1, 'multiple': 1, 'nohref': 1,
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'noresize': 1, 'noshade': 1, 'nowrap': 1, 'readonly': 1, 'rel': 1, 'rev': 1,
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'rules': 1, 'scope': 1, 'scrolling': 1, 'selected': 1, 'shape': 1, 'target': 1,
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'text': 1, 'type': 1, 'valign': 1, 'valuetype': 1, 'vlink': 1
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},
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Combinators = { },
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Selectors = { },
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Operators = {
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'=': { p1: '^',
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p2: '$',
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p3: 'true' },
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'^=': { p1: '^',
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p2: '',
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p3: 'true' },
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'$=': { p1: '',
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p2: '$',
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p3: 'true' },
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'*=': { p1: '',
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p2: '',
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p3: 'true' },
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'|=': { p1: '^',
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p2: '(-|$)',
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p3: 'true' },
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'~=': { p1: '(^|\\s)',
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p2: '(\\s|$)',
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p3: 'true' }
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},
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concatCall =
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function(nodes, callback) {
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var i = 0, l = nodes.length, list = Array(l);
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while (l > i) {
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if (false === callback(list[i] = nodes[i])) break;
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++i;
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}
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return list;
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},
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concatList =
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function(list, nodes) {
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var i = -1, l = nodes.length;
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while (l--) { list[list.length] = nodes[++i]; }
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return list;
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},
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documentOrder =
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function(a, b) {
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if (!hasDupes && a === b) {
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hasDupes = true;
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return 0;
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}
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return a.compareDocumentPosition(b) & 4 ? -1 : 1;
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},
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hasDupes = false,
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unique =
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function(nodes) {
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var i = 0, j = -1, l = nodes.length + 1, list = [ ];
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while (--l) {
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if (nodes[i++] === nodes[i]) continue;
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list[++j] = nodes[i - 1];
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}
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hasDupes = false;
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return list;
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},
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switchContext =
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function(context, force) {
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var oldDoc = doc;
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doc = context.ownerDocument || context;
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if (force || oldDoc !== doc) {
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// force a new check for each document change
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// performed before the next select operation
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root = doc.documentElement;
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HTML_DOCUMENT = isHTML(doc);
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QUIRKS_MODE = HTML_DOCUMENT &&
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doc.compatMode.indexOf('CSS') < 0;
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NAMESPACE = root && root.namespaceURI;
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Snapshot.doc = doc;
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Snapshot.root = root;
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}
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return (Snapshot.from = context);
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},
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// convert single codepoint to UTF-16 encoding
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codePointToUTF16 =
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function(codePoint) {
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// out of range, use replacement character
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if (codePoint < 1 || codePoint > 0x10ffff ||
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(codePoint > 0xd7ff && codePoint < 0xe000)) {
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return '\\ufffd';
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}
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// javascript strings are UTF-16 encoded
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if (codePoint < 0x10000) {
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var lowHex = '000' + codePoint.toString(16);
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return '\\u' + lowHex.substr(lowHex.length - 4);
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}
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// supplementary high + low surrogates
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return '\\u' + (((codePoint - 0x10000) >> 0x0a) + 0xd800).toString(16) +
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'\\u' + (((codePoint - 0x10000) % 0x400) + 0xdc00).toString(16);
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},
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// convert single codepoint to string
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stringFromCodePoint =
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function(codePoint) {
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// out of range, use replacement character
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if (codePoint < 1 || codePoint > 0x10ffff ||
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(codePoint > 0xd7ff && codePoint < 0xe000)) {
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return '\ufffd';
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}
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if (codePoint < 0x10000) {
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return String.fromCharCode(codePoint);
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}
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return String.fromCodePoint ?
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String.fromCodePoint(codePoint) :
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String.fromCharCode(
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((codePoint - 0x10000) >> 0x0a) + 0xd800,
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((codePoint - 0x10000) % 0x400) + 0xdc00);
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},
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// convert escape sequence in a CSS string or identifier
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// to javascript string with javascript escape sequences
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convertEscapes =
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function(str) {
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return REX.HasEscapes.test(str) ?
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str.replace(REX.FixEscapes,
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function(substring, p1, p2) {
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// unescaped " or '
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return p2 ? '\\' + p2 :
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// javascript strings are UTF-16 encoded
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REX.HexNumbers.test(p1) ? codePointToUTF16(parseInt(p1, 16)) :
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// \' \"
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REX.EscOrQuote.test(p1) ? substring :
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// \g \h \. \# etc
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p1;
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}
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) : str;
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},
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// convert escape sequence in a CSS string or identifier
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// to javascript string with characters representations
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unescapeIdentifier =
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function(str) {
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return REX.HasEscapes.test(str) ?
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str.replace(REX.FixEscapes,
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function(substring, p1, p2) {
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// unescaped " or '
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return p2 ? p2 :
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// javascript strings are UTF-16 encoded
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REX.HexNumbers.test(p1) ? stringFromCodePoint(parseInt(p1, 16)) :
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// \' \"
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REX.EscOrQuote.test(p1) ? substring :
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// \g \h \. \# etc
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p1;
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}
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) : str;
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},
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method = {
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'#': 'getElementById',
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'*': 'getElementsByTagName',
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'|': 'getElementsByTagNameNS',
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'.': 'getElementsByClassName'
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},
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compat = {
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'#': function(c, n) { REX.HasEscapes.test(n) && (n = unescapeIdentifier(n)); return function(e, f) { return byId(n, c); }; },
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'*': function(c, n) { REX.HasEscapes.test(n) && (n = unescapeIdentifier(n)); return function(e, f) { return byTag(n, c); }; },
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'|': function(c, n) { REX.HasEscapes.test(n) && (n = unescapeIdentifier(n)); return function(e, f) { return byTag(n, c); }; },
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'.': function(c, n) { REX.HasEscapes.test(n) && (n = unescapeIdentifier(n)); return function(e, f) { return byClass(n, c); }; }
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},
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// find duplicate ids using iterative walk
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byIdRaw =
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function(id, context) {
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var node = context, nodes = [ ], next = node.firstElementChild;
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while ((node = next)) {
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node.id == id && (nodes[nodes.length] = node);
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if ((next = node.firstElementChild || node.nextElementSibling)) continue;
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while (!next && (node = node.parentElement) && node !== context) {
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next = node.nextElementSibling;
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}
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}
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return nodes;
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},
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// context agnostic getElementById
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byId =
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function(id, context) {
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var e, i, l, nodes, api = method['#'];
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// duplicates id allowed
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if (Config.IDS_DUPES === false) {
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if (api in context) {
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return (e = context[api](id)) ? [ e ] : none;
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}
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} else {
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if ('all' in context) {
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if ((e = context.all[id])) {
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if (e.nodeType == 1) return e.getAttribute('id') != id ? [ ] : [ e ];
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else if (id == 'length') return (e = context[api](id)) ? [ e ] : none;
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for (i = 0, l = e.length, nodes = [ ]; l > i; ++i) {
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if (e[i].id == id) nodes[nodes.length] = e[i];
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}
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return nodes && nodes.length ? nodes : [ nodes ];
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} else return none;
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}
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}
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return byIdRaw(id, context);
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},
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// context agnostic getElementsByTagName
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byTag =
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function(tag, context) {
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var e, nodes, api = method['*'];
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// DOCUMENT_NODE (9) & ELEMENT_NODE (1)
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if (api in context) {
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return slice.call(context[api](tag));
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} else {
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tag = tag.toLowerCase();
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// DOCUMENT_FRAGMENT_NODE (11)
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if ((e = context.firstElementChild)) {
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if (!(e.nextElementSibling || tag == '*' || e.localName == tag)) {
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return slice.call(e[api](tag));
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} else {
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nodes = [ ];
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do {
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if (tag == '*' || e.localName == tag) nodes[nodes.length] = e;
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concatList(nodes, e[api](tag));
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} while ((e = e.nextElementSibling));
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}
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} else nodes = none;
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}
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return nodes;
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},
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// context agnostic getElementsByClassName
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byClass =
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function(cls, context) {
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var e, nodes, api = method['.'], reCls;
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// DOCUMENT_NODE (9) & ELEMENT_NODE (1)
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if (api in context) {
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return slice.call(context[api](cls));
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} else {
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// DOCUMENT_FRAGMENT_NODE (11)
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if ((e = context.firstElementChild)) {
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reCls = RegExp('(^|\\s)' + cls + '(\\s|$)', QUIRKS_MODE ? 'i' : '');
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if (!(e.nextElementSibling || reCls.test(e.className))) {
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return slice.call(e[api](cls));
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} else {
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nodes = [ ];
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do {
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if (reCls.test(e.className)) nodes[nodes.length] = e;
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concatList(nodes, e[api](cls));
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} while ((e = e.nextElementSibling));
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}
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} else nodes = none;
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}
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return nodes;
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},
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// namespace aware hasAttribute
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// helper for XML/XHTML documents
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hasAttributeNS =
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function(e, name) {
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var i, l, attr = e.getAttributeNames();
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name = RegExp(':?' + name + '$', HTML_DOCUMENT ? 'i' : '');
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for (i = 0, l = attr.length; l > i; ++i) {
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if (name.test(attr[i])) return true;
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}
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return false;
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},
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// fast resolver for the :nth-child() and :nth-last-child() pseudo-classes
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nthElement = (function() {
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var idx = 0, len = 0, set = 0, parent = undefined, parents = Array(), nodes = Array();
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return function(element, dir) {
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// ensure caches are emptied after each run, invoking with dir = 2
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if (dir == 2) {
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idx = 0; len = 0; set = 0; nodes.length = 0;
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parents.length = 0; parent = undefined;
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return -1;
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}
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var e, i, j, k, l;
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if (parent === element.parentElement) {
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i = set; j = idx; l = len;
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} else {
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l = parents.length;
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parent = element.parentElement;
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for (i = -1, j = 0, k = l - 1; l > j; ++j, --k) {
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if (parents[j] === parent) { i = j; break; }
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if (parents[k] === parent) { i = k; break; }
|
|
}
|
|
if (i < 0) {
|
|
parents[i = l] = parent;
|
|
l = 0; nodes[i] = Array();
|
|
e = parent && parent.firstElementChild || element;
|
|
while (e) { nodes[i][l] = e; if (e === element) j = l; e = e.nextElementSibling; ++l; }
|
|
set = i; idx = 0; len = l;
|
|
if (l < 2) return l;
|
|
} else {
|
|
l = nodes[i].length;
|
|
set = i;
|
|
}
|
|
}
|
|
if (element !== nodes[i][j] && element !== nodes[i][j = 0]) {
|
|
for (j = 0, e = nodes[i], k = l - 1; l > j; ++j, --k) {
|
|
if (e[j] === element) { break; }
|
|
if (e[k] === element) { j = k; break; }
|
|
}
|
|
}
|
|
idx = j + 1; len = l;
|
|
return dir ? l - j : idx;
|
|
};
|
|
})(),
|
|
|
|
// fast resolver for the :nth-of-type() and :nth-last-of-type() pseudo-classes
|
|
nthOfType = (function() {
|
|
var idx = 0, len = 0, set = 0, parent = undefined, parents = Array(), nodes = Array();
|
|
return function(element, dir) {
|
|
// ensure caches are emptied after each run, invoking with dir = 2
|
|
if (dir == 2) {
|
|
idx = 0; len = 0; set = 0; nodes.length = 0;
|
|
parents.length = 0; parent = undefined;
|
|
return -1;
|
|
}
|
|
var e, i, j, k, l, name = element.localName;
|
|
if (nodes[set] && nodes[set][name] && parent === element.parentElement) {
|
|
i = set; j = idx; l = len;
|
|
} else {
|
|
l = parents.length;
|
|
parent = element.parentElement;
|
|
for (i = -1, j = 0, k = l - 1; l > j; ++j, --k) {
|
|
if (parents[j] === parent) { i = j; break; }
|
|
if (parents[k] === parent) { i = k; break; }
|
|
}
|
|
if (i < 0 || !nodes[i][name]) {
|
|
parents[i = l] = parent;
|
|
nodes[i] || (nodes[i] = Object());
|
|
l = 0; nodes[i][name] = Array();
|
|
e = parent && parent.firstElementChild || element;
|
|
while (e) { if (e === element) j = l; if (e.localName == name) { nodes[i][name][l] = e; ++l; } e = e.nextElementSibling; }
|
|
set = i; idx = j; len = l;
|
|
if (l < 2) return l;
|
|
} else {
|
|
l = nodes[i][name].length;
|
|
set = i;
|
|
}
|
|
}
|
|
if (element !== nodes[i][name][j] && element !== nodes[i][name][j = 0]) {
|
|
for (j = 0, e = nodes[i][name], k = l - 1; l > j; ++j, --k) {
|
|
if (e[j] === element) { break; }
|
|
if (e[k] === element) { j = k; break; }
|
|
}
|
|
}
|
|
idx = j + 1; len = l;
|
|
return dir ? l - j : idx;
|
|
};
|
|
})(),
|
|
|
|
// check if the document type is HTML
|
|
isHTML =
|
|
function(node) {
|
|
var doc = node.ownerDocument || node;
|
|
return doc.nodeType == 9 &&
|
|
// contentType not in IE <= 11
|
|
'contentType' in doc ?
|
|
doc.contentType.indexOf('/html') > 0 :
|
|
doc.createElement('DiV').localName == 'div';
|
|
},
|
|
|
|
// configure the engine to use special handling
|
|
configure =
|
|
function(option, clear) {
|
|
if (typeof option == 'string') { return !!Config[option]; }
|
|
if (typeof option != 'object') { return Config; }
|
|
for (var i in option) {
|
|
Config[i] = !!option[i];
|
|
}
|
|
// clear lambda cache
|
|
if (clear) {
|
|
matchResolvers = { };
|
|
selectResolvers = { };
|
|
}
|
|
setIdentifierSyntax();
|
|
return true;
|
|
},
|
|
|
|
// centralized error and exceptions handling
|
|
emit =
|
|
function(message, proto) {
|
|
var err;
|
|
if (Config.VERBOSITY) {
|
|
if (proto) {
|
|
err = new proto(message);
|
|
} else {
|
|
err = new global.DOMException(message, 'SyntaxError');
|
|
}
|
|
throw err;
|
|
}
|
|
if (Config.LOGERRORS && console && console.log) {
|
|
console.log(message);
|
|
}
|
|
},
|
|
|
|
// execute the engine initialization code
|
|
initialize =
|
|
function(doc) {
|
|
setIdentifierSyntax();
|
|
lastContext = switchContext(doc, true);
|
|
},
|
|
|
|
// build validation regexps used by the engine
|
|
setIdentifierSyntax =
|
|
function() {
|
|
|
|
//
|
|
// NOTE: SPECIAL CASES IN CSS SYNTAX PARSING RULES
|
|
//
|
|
// The <EOF-token> https://drafts.csswg.org/css-syntax/#typedef-eof-token
|
|
// allow mangled|unclosed selector syntax at the end of selectors strings
|
|
//
|
|
// Literal equivalent hex representations of the characters: " ' ` ] )
|
|
//
|
|
// \\x22 = " - double quotes \\x5b = [ - open square bracket
|
|
// \\x27 = ' - single quote \\x5d = ] - closed square bracket
|
|
// \\x60 = ` - back tick \\x28 = ( - open round parens
|
|
// \\x5c = \ - back slash \\x29 = ) - closed round parens
|
|
//
|
|
// using hex format prevents false matches of opened/closed instances
|
|
// pairs, coloring breakage and other editors highlightning problems.
|
|
//
|
|
|
|
var identifier =
|
|
// doesn't start with a digit
|
|
(Config.NONDIGITS ? '(?=[^0-9])' : '') +
|
|
// can start with double dash
|
|
'(?:-{2}' +
|
|
// may include ascii chars
|
|
'|[a-zA-Z0-9-_]' +
|
|
// non-ascii chars
|
|
'|[^\\x00-\\x9f]' +
|
|
// escaped chars
|
|
'|\\\\[^\\r\\n\\f0-9a-fA-F]' +
|
|
// unicode chars
|
|
'|\\\\[0-9a-fA-F]{1,6}(?:\\r\\n|\\s)?' +
|
|
// any escaped chars
|
|
'|\\\\.' +
|
|
')+',
|
|
|
|
pseudonames = '[-\\w]+',
|
|
pseudoparms = '(?:[-+]?\\d*)(?:n\\s?[-+]?\\s?\\d*)',
|
|
doublequote = '"[^"\\\\]*(?:\\\\.[^"\\\\]*)*(?:"|$)',
|
|
singlequote = "'[^'\\\\]*(?:\\\\.[^'\\\\]*)*(?:'|$)",
|
|
|
|
attrparser = identifier + '|' + doublequote + '|' + singlequote,
|
|
|
|
attrvalues = '([\\x22\\x27]?)((?!\\3)*|(?:\\\\?.)*?)(?:\\3|$)',
|
|
|
|
attributes =
|
|
'\\[' +
|
|
// attribute presence
|
|
'(?:\\*\\|)?' +
|
|
WSP + '?' +
|
|
'(' + identifier + '(?::' + identifier + ')?)' +
|
|
WSP + '?' +
|
|
'(?:' +
|
|
'(' + CFG.operators + ')' + WSP + '?' +
|
|
'(?:' + attrparser + ')' +
|
|
')?' +
|
|
// attribute case sensitivity
|
|
'(?:' + WSP + '?\\b(i))?' + WSP + '?' +
|
|
'(?:\\]|$)',
|
|
|
|
attrmatcher = attributes.replace(attrparser, attrvalues),
|
|
|
|
pseudoclass =
|
|
'(?:\\x28' + WSP + '*' +
|
|
'(?:' + pseudoparms + '?)?|' +
|
|
// universal * &
|
|
// namespace *|*
|
|
'(?:\\*|\\|)|' +
|
|
'(?:' +
|
|
'(?::' + pseudonames +
|
|
'(?:\\x28' + pseudoparms + '?(?:\\x29|$))?|' +
|
|
')|' +
|
|
'(?:[.#]?' + identifier + ')|' +
|
|
'(?:' + attributes + ')' +
|
|
')+|' +
|
|
'(?:' + WSP + '?,' + WSP + '?)|' +
|
|
'(?:' + WSP + '?)|' +
|
|
'(?:\\x29|$))*',
|
|
|
|
standardValidator =
|
|
'(?=' + WSP + '?[^>+~(){}<>])' +
|
|
'(?:' +
|
|
// universal * &
|
|
// namespace *|*
|
|
'(?:\\*|\\|)|' +
|
|
'(?:[.#]?' + identifier + ')+|' +
|
|
'(?:' + attributes + ')+|' +
|
|
'(?:::?' + pseudonames + pseudoclass + ')|' +
|
|
'(?:' + WSP + '?' + CFG.combinators + WSP + '?)|' +
|
|
'(?:' + WSP + '?,' + WSP + '?)|' +
|
|
'(?:' + WSP + '?)' +
|
|
')+';
|
|
|
|
// the following global RE is used to return the
|
|
// deepest localName in selector strings and then
|
|
// use it to retrieve all possible matching nodes
|
|
// that will be filtered by compiled resolvers
|
|
reOptimizer = RegExp(
|
|
'(?:([.:#*]?)' +
|
|
'(' + identifier + ')' +
|
|
'(?:' +
|
|
':[-\\w]+|' +
|
|
'\\[[^\\]]+(?:\\]|$)|' +
|
|
'\\x28[^\\x29]+(?:\\x29|$)' +
|
|
')*)$');
|
|
|
|
// global
|
|
reValidator = RegExp(standardValidator, 'g');
|
|
|
|
Patterns.id = RegExp('^#(' + identifier + ')(.*)');
|
|
Patterns.tagName = RegExp('^(' + identifier + ')(.*)');
|
|
Patterns.className = RegExp('^\\.(' + identifier + ')(.*)');
|
|
Patterns.attribute = RegExp('^(?:' + attrmatcher + ')(.*)');
|
|
},
|
|
|
|
F_INIT = '"use strict";return function Resolver(c,f,x,r)',
|
|
|
|
S_HEAD = 'var e,n,o,j=r.length-1,k=-1',
|
|
M_HEAD = 'var e,n,o',
|
|
|
|
S_LOOP = 'main:while((e=c[++k]))',
|
|
N_LOOP = 'main:while((e=c.item(++k)))',
|
|
M_LOOP = 'e=c;',
|
|
|
|
S_BODY = 'r[++j]=c[k];',
|
|
N_BODY = 'r[++j]=c.item(k);',
|
|
M_BODY = '',
|
|
|
|
S_TAIL = 'continue main;',
|
|
M_TAIL = 'r=true;',
|
|
|
|
S_TEST = 'if(f(c[k])){break main;}',
|
|
N_TEST = 'if(f(c.item(k))){break main;}',
|
|
M_TEST = 'f(c);',
|
|
|
|
S_VARS = [ ],
|
|
M_VARS = [ ],
|
|
|
|
// compile groups or single selector strings into
|
|
// executable functions for matching or selecting
|
|
compile =
|
|
function(selector, mode, callback) {
|
|
var factory, token, head = '', loop = '', macro = '', source = '', vars = '';
|
|
|
|
// 'mode' can be boolean or null
|
|
// true = select / false = match
|
|
// null to use collection.item()
|
|
switch (mode) {
|
|
case true:
|
|
if (selectLambdas[selector]) { return selectLambdas[selector]; }
|
|
macro = S_BODY + (callback ? S_TEST : '') + S_TAIL;
|
|
head = S_HEAD;
|
|
loop = S_LOOP;
|
|
break;
|
|
case false:
|
|
if (matchLambdas[selector]) { return matchLambdas[selector]; }
|
|
macro = M_BODY + (callback ? M_TEST : '') + M_TAIL;
|
|
head = M_HEAD;
|
|
loop = M_LOOP;
|
|
break;
|
|
case null:
|
|
if (selectLambdas[selector]) { return selectLambdas[selector]; }
|
|
macro = N_BODY + (callback ? N_TEST : '') + S_TAIL;
|
|
head = S_HEAD;
|
|
loop = N_LOOP;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
source = compileSelector(selector, macro, mode, callback);
|
|
|
|
loop += mode || mode === null ? '{' + source + '}' : source;
|
|
|
|
if (mode || mode === null && selector.includes(':nth')) {
|
|
loop += reNthElem.test(selector) ? 's.nthElement(null, 2);' : '';
|
|
loop += reNthType.test(selector) ? 's.nthOfType(null, 2);' : '';
|
|
}
|
|
|
|
if (S_VARS[0] || M_VARS[0]) {
|
|
vars = ',' + (S_VARS.join(',') || M_VARS.join(','));
|
|
S_VARS.length = 0;
|
|
M_VARS.length = 0;
|
|
}
|
|
|
|
factory = Function('s', F_INIT + '{' + head + vars + ';' + loop + 'return r;}')(Snapshot);
|
|
|
|
return mode || mode === null ? (selectLambdas[selector] = factory) : (matchLambdas[selector] = factory);
|
|
},
|
|
|
|
// build conditional code to check components of selector strings
|
|
compileSelector =
|
|
function(expression, source, mode, callback) {
|
|
|
|
// N is the negation pseudo-class flag
|
|
// D is the default inverted negation flag
|
|
var a, b, n, f, k = 0, name, NS, N = '', D = '!',
|
|
compat, expr, match, result, status, symbol, test,
|
|
type, selector = expression, selector_string, vars;
|
|
|
|
// original 'select' or 'match' selector string before normalization
|
|
selector_string = mode ? lastSelected : lastMatched;
|
|
|
|
// isolate selector combinators/components and normalize whitespace
|
|
selector = selector.replace(STD.combinator, '$1');//.replace(STD.whitespace, ' ');
|
|
|
|
// javascript needs a label to break
|
|
// out of the while loops processing
|
|
selector_recursion_label:
|
|
|
|
while (selector) {
|
|
|
|
++k;
|
|
|
|
// get namespace prefix if present or get first char of selector
|
|
symbol = STD.apimethods.test(selector) ? '|' : selector[0];
|
|
|
|
switch (symbol) {
|
|
|
|
// universal resolver
|
|
case '*':
|
|
match = selector.match(Patterns.universal);
|
|
if (N == '!') {
|
|
source = 'if(' + N + 'true' +
|
|
'){' + source + '}';
|
|
}
|
|
break;
|
|
|
|
// id resolver
|
|
case '#':
|
|
match = selector.match(Patterns.id);
|
|
source = 'if(' + N + '(/^' + match[1] + '$/.test(e.getAttribute("id"))' +
|
|
')){' + source + '}';
|
|
break;
|
|
|
|
// class name resolver
|
|
case '.':
|
|
match = selector.match(Patterns.className);
|
|
compat = (QUIRKS_MODE ? 'i' : '') + '.test(e.getAttribute("class"))';
|
|
source = 'if(' + N + '(/(^|\\s)' + match[1] + '(\\s|$)/' + compat +
|
|
')){' + source + '}';
|
|
break;
|
|
|
|
// tag name resolver
|
|
case (/[_a-z]/i.test(symbol) ? symbol : undefined):
|
|
match = selector.match(Patterns.tagName);
|
|
source = 'if(' + N + '(e.localName' + '=="' + match[1] + '"' +
|
|
')){' + source + '}';
|
|
break;
|
|
|
|
// namespace resolver
|
|
case '|':
|
|
match = selector.match(Patterns.namespace);
|
|
if (match[1] == '*') {
|
|
source = 'if(' + N + 'true){' + source + '}';
|
|
} else if (!match[1]) {
|
|
source = 'if(' + N + '(!e.namespaceURI)){' + source + '}';
|
|
} else if (typeof match[1] == 'string' && root.prefix == match[1]) {
|
|
source = 'if(' + N + '(e.namespaceURI=="' + NAMESPACE + '")){' + source + '}';
|
|
} else {
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
}
|
|
break;
|
|
|
|
// attributes resolver
|
|
case '[':
|
|
match = selector.match(Patterns.attribute);
|
|
NS = match[0].match(STD.namespaces);
|
|
name = match[1];
|
|
expr = name.split(':');
|
|
expr = expr.length == 2 ? expr[1] : expr[0];
|
|
if (match[2] && !(test = Operators[match[2]])) {
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
return '';
|
|
}
|
|
if (match[4] === '') {
|
|
test = match[2] == '~=' ?
|
|
{ p1: '^\\s', p2: '+$', p3: 'true' } :
|
|
match[2] in ATTR_STD_OPS && match[2] != '~=' ?
|
|
{ p1: '^', p2: '$', p3: 'true' } : test;
|
|
} else if (match[2] == '~=' && match[4].includes(' ')) {
|
|
// whitespace separated list but value contains space
|
|
source = 'if(' + N + 'false){' + source + '}';
|
|
break;
|
|
} else if (match[4]) {
|
|
match[4] = convertEscapes(match[4]).replace(REX.RegExpChar, '\\$&');
|
|
}
|
|
type = match[5] == 'i' || (HTML_DOCUMENT && HTML_TABLE[expr.toLowerCase()]) ? 'i' : '';
|
|
source = 'if(' + N + '(' +
|
|
(!match[2] ? (NS ? 's.hasAttributeNS(e,"' + name + '")' : 'e.hasAttribute&&e.hasAttribute("' + name + '")') :
|
|
!match[4] && ATTR_STD_OPS[match[2]] && match[2] != '~=' ? 'e.getAttribute&&e.getAttribute("' + name + '")==""' :
|
|
'(/' + test.p1 + match[4] + test.p2 + '/' + type + ').test(e.getAttribute&&e.getAttribute("' + name + '"))==' + test.p3) +
|
|
')){' + source + '}';
|
|
break;
|
|
|
|
// *** General sibling combinator
|
|
// E ~ F (F relative sibling of E)
|
|
case '~':
|
|
match = selector.match(Patterns.relative);
|
|
source = 'var N' + k + '=e;while(e&&(e=e.previousElementSibling)){' + source + '}e=N' + k + ';';
|
|
break;
|
|
// *** Adjacent sibling combinator
|
|
// E + F (F adiacent sibling of E)
|
|
case '+':
|
|
match = selector.match(Patterns.adjacent);
|
|
source = 'var N' + k + '=e;if(e&&(e=e.previousElementSibling)){' + source + '}e=N' + k + ';';
|
|
break;
|
|
// *** Descendant combinator
|
|
// E F (E ancestor of F)
|
|
case '\x09':
|
|
case '\x20':
|
|
match = selector.match(Patterns.ancestor);
|
|
source = 'var N' + k + '=e;while(e&&(e=e.parentElement)){' + source + '}e=N' + k + ';';
|
|
break;
|
|
// *** Child combinator
|
|
// E > F (F children of E)
|
|
case '>':
|
|
match = selector.match(Patterns.children);
|
|
source = 'var N' + k + '=e;if(e&&(e=e.parentElement)){' + source + '}e=N' + k + ';';
|
|
break;
|
|
|
|
// *** user supplied combinators extensions
|
|
case (symbol in Combinators ? symbol : undefined):
|
|
// for other registered combinators extensions
|
|
match[match.length - 1] = '*';
|
|
source = Combinators[symbol](match) + source;
|
|
break;
|
|
|
|
// *** tree-structural pseudo-classes
|
|
// :root, :empty, :first-child, :last-child, :only-child, :first-of-type, :last-of-type, :only-of-type
|
|
case ':':
|
|
if ((match = selector.match(Patterns.structural))) {
|
|
match[1] = match[1].toLowerCase();
|
|
switch (match[1]) {
|
|
case 'root':
|
|
// there can only be one :root element, so exit the loop once found
|
|
source = 'if(' + N + '(e===s.root)){' + source + (mode ? 'break main;' : '') + '}';
|
|
break;
|
|
case 'empty':
|
|
// matches elements that don't contain elements or text nodes
|
|
source = 'n=e.firstChild;while(n&&!(/1|3/).test(n.nodeType)){n=n.nextSibling}if(' + D + 'n){' + source + '}';
|
|
break;
|
|
|
|
// *** child-indexed pseudo-classes
|
|
// :first-child, :last-child, :only-child
|
|
case 'only-child':
|
|
source = 'if(' + N + '(!e.nextElementSibling&&!e.previousElementSibling)){' + source + '}';
|
|
break;
|
|
case 'last-child':
|
|
source = 'if(' + N + '(!e.nextElementSibling)){' + source + '}';
|
|
break;
|
|
case 'first-child':
|
|
source = 'if(' + N + '(!e.previousElementSibling)){' + source + '}';
|
|
break;
|
|
|
|
// *** typed child-indexed pseudo-classes
|
|
// :only-of-type, :last-of-type, :first-of-type
|
|
case 'only-of-type':
|
|
source = 'o=e.localName;' +
|
|
'n=e;while((n=n.nextElementSibling)&&n.localName!=o);if(!n){' +
|
|
'n=e;while((n=n.previousElementSibling)&&n.localName!=o);}if(' + D + 'n){' + source + '}';
|
|
break;
|
|
case 'last-of-type':
|
|
source = 'n=e;o=e.localName;while((n=n.nextElementSibling)&&n.localName!=o);if(' + D + 'n){' + source + '}';
|
|
break;
|
|
case 'first-of-type':
|
|
source = 'n=e;o=e.localName;while((n=n.previousElementSibling)&&n.localName!=o);if(' + D + 'n){' + source + '}';
|
|
break;
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// *** child-indexed & typed child-indexed pseudo-classes
|
|
// :nth-child, :nth-of-type, :nth-last-child, :nth-last-of-type
|
|
else if ((match = selector.match(Patterns.treestruct))) {
|
|
match[1] = match[1].toLowerCase();
|
|
switch (match[1]) {
|
|
case 'nth-child':
|
|
case 'nth-of-type':
|
|
case 'nth-last-child':
|
|
case 'nth-last-of-type':
|
|
expr = /-of-type/i.test(match[1]);
|
|
if (match[1] && match[2]) {
|
|
type = /last/i.test(match[1]);
|
|
if (match[2] == 'n') {
|
|
source = 'if(' + N + 'true){' + source + '}';
|
|
break;
|
|
} else if (match[2] == '1') {
|
|
test = type ? 'next' : 'previous';
|
|
source = expr ? 'n=e;o=e.localName;' +
|
|
'while((n=n.' + test + 'ElementSibling)&&n.localName!=o);if(' + D + 'n){' + source + '}' :
|
|
'if(' + N + '!e.' + test + 'ElementSibling){' + source + '}';
|
|
break;
|
|
} else if (match[2] == 'even' || match[2] == '2n0' || match[2] == '2n+0' || match[2] == '2n') {
|
|
test = 'n%2==0';
|
|
} else if (match[2] == 'odd' || match[2] == '2n1' || match[2] == '2n+1') {
|
|
test = 'n%2==1';
|
|
} else {
|
|
f = /n/i.test(match[2]);
|
|
n = match[2].split('n');
|
|
a = parseInt(n[0], 10) || 0;
|
|
b = parseInt(n[1], 10) || 0;
|
|
if (n[0] == '-') { a = -1; }
|
|
if (n[0] == '+') { a = +1; }
|
|
test = (b ? '(n' + (b > 0 ? '-' : '+') + Math.abs(b) + ')' : 'n') + '%' + a + '==0' ;
|
|
test =
|
|
a >= +1 ? (f ? 'n>' + (b - 1) + (Math.abs(a) != 1 ? '&&' + test : '') : 'n==' + a) :
|
|
a <= -1 ? (f ? 'n<' + (b + 1) + (Math.abs(a) != 1 ? '&&' + test : '') : 'n==' + a) :
|
|
a === 0 ? (n[0] ? 'n==' + b : 'n>' + (b - 1)) : 'false';
|
|
}
|
|
expr = expr ? 'OfType' : 'Element';
|
|
type = type ? 'true' : 'false';
|
|
source = 'n=s.nth' + expr + '(e,' + type + ');if(' + N + '(' + test + ')){' + source + '}';
|
|
} else {
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
}
|
|
break;
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// *** logical combination pseudo-classes
|
|
// :is( s1, [ s2, ... ]), :not( s1, [ s2, ... ])
|
|
else if ((match = selector.match(Patterns.logicalsel))) {
|
|
match[1] = match[1].toLowerCase();
|
|
switch (match[1]) {
|
|
case 'is':
|
|
case 'where':
|
|
case 'matches':
|
|
expr = match[2].replace(REX.CommaGroup, ',').replace(REX.TrimSpaces, '');
|
|
source = 'if(s.match("' + expr.replace(/\x22/g, '\\"') + '",e)){' + source + '}';
|
|
break;
|
|
case 'not':
|
|
expr = match[2].replace(REX.CommaGroup, ',').replace(REX.TrimSpaces, '');
|
|
source = 'if(!s.match("' + expr.replace(/\x22/g, '\\"') + '",e)){' + source + '}';
|
|
break;
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// *** linguistic pseudo-classes
|
|
// :dir( ltr / rtl ), :lang( en )
|
|
else if ((match = selector.match(Patterns.linguistic))) {
|
|
match[1] = match[1].toLowerCase();
|
|
switch (match[1]) {
|
|
case 'dir':
|
|
source = 'var p;if(' + N + '(' +
|
|
'(/' + match[2] + '/i.test(e.dir))||(p=s.ancestor("[dir]", e))&&' +
|
|
'(/' + match[2] + '/i.test(p.dir))||(e.dir==""||e.dir=="auto")&&' +
|
|
'(' + (match[2] == 'ltr' ? '!':'')+ RTL +'.test(e.textContent)))' +
|
|
'){' + source + '};';
|
|
break;
|
|
case 'lang':
|
|
expr = '(?:^|-)' + match[2] + '(?:-|$)';
|
|
source = 'var p;if(' + N + '(' +
|
|
'(e.isConnected&&(e.lang==""&&(p=s.ancestor("[lang]",e)))&&' +
|
|
'(p.lang=="' + match[2] + '")||/'+ expr +'/i.test(e.lang)))' +
|
|
'){' + source + '};';
|
|
break;
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// *** location pseudo-classes
|
|
// :any-link, :link, :visited, :target
|
|
else if ((match = selector.match(Patterns.locationpc))) {
|
|
match[1] = match[1].toLowerCase();
|
|
switch (match[1]) {
|
|
case 'any-link':
|
|
source = 'if(' + N + '(/^a|area$/i.test(e.localName)&&e.hasAttribute("href")||e.visited)){' + source + '}';
|
|
break;
|
|
case 'link':
|
|
source = 'if(' + N + '(/^a|area$/i.test(e.localName)&&e.hasAttribute("href"))){' + source + '}';
|
|
break;
|
|
case 'visited':
|
|
source = 'if(' + N + '(/^a|area$/i.test(e.localName)&&e.hasAttribute("href")&&e.visited)){' + source + '}';
|
|
break;
|
|
case 'target':
|
|
source = 'if(' + N + '((s.doc.compareDocumentPosition(e)&16)&&s.doc.location.hash&&e.id==s.doc.location.hash.slice(1))){' + source + '}';
|
|
break;
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// *** user actions pseudo-classes
|
|
// :hover, :active, :focus, :focus-within
|
|
else if ((match = selector.match(Patterns.useraction))) {
|
|
match[1] = match[1].toLowerCase();
|
|
switch (match[1]) {
|
|
case 'hover':
|
|
source = 'hasFocus' in doc && doc.hasFocus() ?
|
|
'if(' + N + '(e===s.doc.hoverElement)){' + source + '}' :
|
|
'if(' + D + 'true){' + source + '}';
|
|
break;
|
|
case 'active':
|
|
source = 'hasFocus' in doc && doc.hasFocus() ?
|
|
'if(' + N + '(e===s.doc.activeElement)){' + source + '}' :
|
|
'if(' + D + 'true){' + source + '}';
|
|
break;
|
|
case 'focus':
|
|
source = 'hasFocus' in doc ?
|
|
'if(' + N + '(e===s.doc.activeElement&&s.doc.hasFocus()&&(e.type||e.href||typeof e.tabIndex=="number"))){' + source + '}' :
|
|
'if(' + N + '(e===s.doc.activeElement&&(e.type||e.href))){' + source + '}';
|
|
break;
|
|
case 'focus-within':
|
|
source = 'hasFocus' in doc ?
|
|
'n=s.doc.activeElement;while(e){if(e===n||e.parentNode===n)break;}' +
|
|
'if(' + N + '(e===n&&s.doc.hasFocus()&&(e.type||e.href||typeof e.tabIndex=="number"))){' + source + '}' : source;
|
|
break;
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// *** user interface and form pseudo-classes
|
|
// :enabled, :disabled, :read-only, :read-write, :placeholder-shown, :default
|
|
else if ((match = selector.match(Patterns.inputstate))) {
|
|
match[1] = match[1].toLowerCase();
|
|
switch (match[1]) {
|
|
case 'enabled':
|
|
source = 'if(' + N + '(("form" in e||/^optgroup$/i.test(e.localName))&&"disabled" in e &&e.disabled===false' +
|
|
')){' + source + '}';
|
|
break;
|
|
case 'disabled':
|
|
// https://www.w3.org/TR/html5/forms.html#enabling-and-disabling-form-controls:-the-disabled-attribute
|
|
source = 'if(' + N + '(("form" in e||/^optgroup$/i.test(e.localName))&&"disabled" in e&&' +
|
|
'(e.disabled===true||(n=s.ancestor("fieldset",e))&&(n=s.first("legend",n))&&!n.contains(e))' +
|
|
')){' + source + '}';
|
|
break;
|
|
case 'read-only':
|
|
source =
|
|
'if(' + N + '(' +
|
|
'(/^textarea$/i.test(e.localName)&&(e.readOnly||e.disabled))||' +
|
|
'("|password|text|".includes("|"+e.type+"|")&&e.readOnly)' +
|
|
')){' + source + '}';
|
|
break;
|
|
case 'read-write':
|
|
source =
|
|
'if(' + N + '(' +
|
|
'((/^textarea$/i.test(e.localName)&&!e.readOnly&&!e.disabled)||' +
|
|
'("|password|text|".includes("|"+e.type+"|")&&!e.readOnly&&!e.disabled))||' +
|
|
'(e.hasAttribute("contenteditable")||(s.doc.designMode=="on"))' +
|
|
')){' + source + '}';
|
|
break;
|
|
case 'placeholder-shown':
|
|
source =
|
|
'if(' + N + '(' +
|
|
'(/^input|textarea$/i.test(e.localName))&&e.hasAttribute("placeholder")&&' +
|
|
'("|textarea|password|number|search|email|text|tel|url|".includes("|"+e.type+"|"))&&' +
|
|
'(!s.match(":focus",e))' +
|
|
')){' + source + '}';
|
|
break;
|
|
case 'default':
|
|
source =
|
|
'if(' + N + '("form" in e && e.form)){' +
|
|
'var x=0;n=[];' +
|
|
'if(e.type=="image")n=e.form.getElementsByTagName("input");' +
|
|
'if(e.type=="submit")n=e.form.elements;' +
|
|
'while(n[x]&&e!==n[x]){' +
|
|
'if(n[x].type=="image")break;' +
|
|
'if(n[x].type=="submit")break;' +
|
|
'x++;' +
|
|
'}' +
|
|
'}' +
|
|
'if(' + N + '(e.form&&(e===n[x]&&"|image|submit|".includes("|"+e.type+"|"))||' +
|
|
'((/^option$/i.test(e.localName))&&e.defaultSelected)||' +
|
|
'(("|radio|checkbox|".includes("|"+e.type+"|"))&&e.defaultChecked)' +
|
|
')){' + source + '}';
|
|
break;
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// *** input pseudo-classes (for form validation)
|
|
// :checked, :indeterminate, :valid, :invalid, :in-range, :out-of-range, :required, :optional
|
|
else if ((match = selector.match(Patterns.inputvalue))) {
|
|
match[1] = match[1].toLowerCase();
|
|
switch (match[1]) {
|
|
case 'checked':
|
|
source = 'if(' + N + '(/^input$/i.test(e.localName)&&' +
|
|
'("|radio|checkbox|".includes("|"+e.type+"|")&&e.checked)||' +
|
|
'(/^option$/i.test(e.localName)&&(e.selected||e.checked))' +
|
|
')){' + source + '}';
|
|
break;
|
|
case 'indeterminate':
|
|
source =
|
|
'if(' + N + '(/^progress$/i.test(e.localName)&&!e.hasAttribute("value"))||' +
|
|
'(/^input$/i.test(e.localName)&&("checkbox"==e.type&&e.indeterminate)||' +
|
|
'("radio"==e.type&&e.name&&!s.first("input[name="+e.name+"]:checked",e.form))' +
|
|
')){' + source + '}';
|
|
break;
|
|
case 'required':
|
|
source =
|
|
'if(' + N +
|
|
'(/^input|select|textarea$/i.test(e.localName)&&e.required)' +
|
|
'){' + source + '}';
|
|
break;
|
|
case 'optional':
|
|
source =
|
|
'if(' + N +
|
|
'(/^input|select|textarea$/i.test(e.localName)&&!e.required)' +
|
|
'){' + source + '}';
|
|
break;
|
|
case 'invalid':
|
|
source =
|
|
'if(' + N + '((' +
|
|
'(/^form$/i.test(e.localName)&&!e.noValidate)||' +
|
|
'(e.willValidate&&!e.formNoValidate))&&!e.checkValidity())||' +
|
|
'(/^fieldset$/i.test(e.localName)&&s.first(":invalid",e))' +
|
|
'){' + source + '}';
|
|
break;
|
|
case 'valid':
|
|
source =
|
|
'if(' + N + '((' +
|
|
'(/^form$/i.test(e.localName)&&!e.noValidate)||' +
|
|
'(e.willValidate&&!e.formNoValidate))&&e.checkValidity())||' +
|
|
'(/^fieldset$/i.test(e.localName)&&s.first(":valid",e))' +
|
|
'){' + source + '}';
|
|
break;
|
|
case 'in-range':
|
|
source =
|
|
'if(' + N +
|
|
'(/^input$/i.test(e.localName))&&' +
|
|
'(e.willValidate&&!e.formNoValidate)&&' +
|
|
'(!e.validity.rangeUnderflow&&!e.validity.rangeOverflow)&&' +
|
|
'("|date|datetime-local|month|number|range|time|week|".includes("|"+e.type+"|"))&&' +
|
|
'("range"==e.type||e.getAttribute("min")||e.getAttribute("max"))' +
|
|
'){' + source + '}';
|
|
break;
|
|
case 'out-of-range':
|
|
source =
|
|
'if(' + N +
|
|
'(/^input$/i.test(e.localName))&&' +
|
|
'(e.willValidate&&!e.formNoValidate)&&' +
|
|
'(e.validity.rangeUnderflow||e.validity.rangeOverflow)&&' +
|
|
'("|date|datetime-local|month|number|range|time|week|".includes("|"+e.type+"|"))&&' +
|
|
'("range"==e.type||e.getAttribute("min")||e.getAttribute("max"))' +
|
|
'){' + source + '}';
|
|
break;
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// allow pseudo-elements starting with single colon (:)
|
|
// :after, :before, :first-letter, :first-line
|
|
// assert: e.type is in double-colon format, like ::after
|
|
else if ((match = selector.match(Patterns.pseudo_sng))) {
|
|
source = 'if(e.element&&e.type.toLowerCase()=="' +
|
|
':' + match[0].toLowerCase() + '"){e=e.element;' + source + '}';
|
|
}
|
|
|
|
// allow pseudo-elements starting with double colon (::)
|
|
// ::after, ::before, ::marker, ::placeholder, ::inactive-selection, ::selection, ::-webkit-<foo-bar>
|
|
// assert: e.type is in double-colon format, like ::after
|
|
else if ((match = selector.match(Patterns.pseudo_dbl))) {
|
|
source = 'if(e.element&&e.type.toLowerCase()=="' +
|
|
match[0].toLowerCase() + '"){e=e.element;' + source + '}';
|
|
}
|
|
|
|
// placeholder for parsed only no-op selectors
|
|
else if ((match = selector.match(Patterns.pseudo_nop))) {
|
|
source = 'if(' + N + 'false' + '){' + source + '}';
|
|
}
|
|
|
|
else {
|
|
|
|
// reset
|
|
expr = false;
|
|
status = false;
|
|
|
|
// process registered selector extensions
|
|
for (expr in Selectors) {
|
|
if ((match = selector.match(Selectors[expr].Expression))) {
|
|
result = Selectors[expr].Callback(match, source, mode, callback);
|
|
if ('match' in result) { match = result.match; }
|
|
vars = result.modvar;
|
|
if (mode) {
|
|
// add extra select() vars
|
|
vars && S_VARS.indexOf(vars) < 0 && (S_VARS[S_VARS.length] = vars);
|
|
} else {
|
|
// add extra match() vars
|
|
vars && M_VARS.indexOf(vars) < 0 && (M_VARS[M_VARS.length] = vars);
|
|
}
|
|
// extension source code
|
|
source = result.source;
|
|
// extension status code
|
|
status = result.status;
|
|
// break on status error
|
|
if (status) { break; }
|
|
}
|
|
}
|
|
|
|
if (!status) {
|
|
emit('unknown pseudo-class selector \'' + selector + '\'');
|
|
return '';
|
|
}
|
|
|
|
if (!expr) {
|
|
emit('unknown token in selector \'' + selector + '\'');
|
|
return '';
|
|
}
|
|
|
|
}
|
|
break;
|
|
|
|
default:
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
break selector_recursion_label;
|
|
|
|
}
|
|
// end of switch symbol
|
|
|
|
if (!match) {
|
|
emit('\'' + selector_string + '\'' + qsInvalid);
|
|
return '';
|
|
}
|
|
|
|
// pop last component
|
|
selector = match.pop();
|
|
}
|
|
// end of while selector
|
|
|
|
return source;
|
|
},
|
|
|
|
// replace ':scope' pseudo-class with element references
|
|
makeref =
|
|
function(selectors, element) {
|
|
return selectors.replace(/:scope/ig,
|
|
element.localName +
|
|
(element.id ? '#' + element.id : '') +
|
|
(element.className ? '.' + element.classList[0] : ''));
|
|
},
|
|
|
|
// equivalent of w3c 'closest' method
|
|
ancestor =
|
|
function _closest(selectors, element, callback) {
|
|
|
|
if ((/:scope/i).test(selectors)) {
|
|
selectors = makeref(selectors, element);
|
|
}
|
|
|
|
while (element) {
|
|
if (match(selectors, element, callback)) break;
|
|
element = element.parentElement;
|
|
}
|
|
return element;
|
|
},
|
|
|
|
match_assert =
|
|
function(f, element, callback) {
|
|
for (var i = 0, l = f.length, r = false; l > i; ++i)
|
|
f[i](element, callback, null, false) && (r = true);
|
|
return r;
|
|
},
|
|
|
|
match_collect =
|
|
function(selectors, callback) {
|
|
for (var i = 0, l = selectors.length, f = [ ]; l > i; ++i)
|
|
f[i] = compile(selectors[i], false, callback);
|
|
return { factory: f };
|
|
},
|
|
|
|
// equivalent of w3c 'matches' method
|
|
match =
|
|
function _matches(selectors, element, callback) {
|
|
|
|
var expressions, parsed;
|
|
|
|
if (element && matchResolvers[selectors]) {
|
|
return match_assert(matchResolvers[selectors].factory, element, callback);
|
|
}
|
|
|
|
lastMatched = selectors;
|
|
|
|
// arguments validation
|
|
if (arguments.length === 0) {
|
|
emit(qsNotArgs, TypeError);
|
|
return Config.VERBOSITY ? undefined : false;
|
|
} else if (arguments[0] === '') {
|
|
emit('\'\'' + qsInvalid);
|
|
return Config.VERBOSITY ? undefined : false;
|
|
}
|
|
|
|
// input NULL or UNDEFINED
|
|
if (typeof selectors != 'string') {
|
|
selectors = '' + selectors;
|
|
}
|
|
|
|
if ((/:scope/i).test(selectors)) {
|
|
selectors = makeref(selectors, element);
|
|
}
|
|
|
|
// normalize input string
|
|
parsed = selectors.
|
|
replace(/\x00|\\$/g, '\ufffd').
|
|
replace(REX.CombineWSP, '\x20').
|
|
replace(REX.PseudosWSP, '$1').
|
|
replace(REX.TabCharWSP, '\t').
|
|
replace(REX.CommaGroup, ',').
|
|
replace(REX.TrimSpaces, '');
|
|
|
|
// parse, validate and split possible compound selectors
|
|
if ((expressions = parsed.match(reValidator)) && expressions.join('') == parsed) {
|
|
expressions = parsed.match(REX.SplitGroup);
|
|
if (parsed[parsed.length - 1] == ',') {
|
|
emit(qsInvalid);
|
|
return Config.VERBOSITY ? undefined : false;
|
|
}
|
|
} else {
|
|
emit('\'' + selectors + '\'' + qsInvalid);
|
|
return Config.VERBOSITY ? undefined : false;
|
|
}
|
|
|
|
matchResolvers[selectors] = match_collect(expressions, callback);
|
|
|
|
return match_assert(matchResolvers[selectors].factory, element, callback);
|
|
},
|
|
|
|
// equivalent of w3c 'querySelector' method
|
|
first =
|
|
function _querySelector(selectors, context, callback) {
|
|
if (arguments.length === 0) {
|
|
emit(qsNotArgs, TypeError);
|
|
}
|
|
return select(selectors, context,
|
|
typeof callback == 'function' ?
|
|
function firstMatch(element) {
|
|
callback(element);
|
|
return false;
|
|
} :
|
|
function firstMatch() {
|
|
return false;
|
|
}
|
|
)[0] || null;
|
|
},
|
|
|
|
// equivalent of w3c 'querySelectorAll' method
|
|
select =
|
|
function _querySelectorAll(selectors, context, callback) {
|
|
|
|
var expressions, nodes = [ ], parsed, resolver;
|
|
|
|
context || (context = doc);
|
|
|
|
if (selectors) {
|
|
if ((resolver = selectResolvers[selectors])) {
|
|
if (resolver.context === context && resolver.callback === callback) {
|
|
var f = resolver.factory, h = resolver.htmlset, n = resolver.nodeset;
|
|
if (n.length > 1) {
|
|
for (var i = 0, l = n.length, list; l > i; ++i) {
|
|
list = compat[n[i][0]](context, n[i].slice(1))();
|
|
if (f[i] !== null) {
|
|
f[i](list, callback, context, nodes);
|
|
} else {
|
|
nodes = nodes.concat(list);
|
|
}
|
|
}
|
|
if (l > 1 && nodes.length > 1) {
|
|
nodes.sort(documentOrder);
|
|
hasDupes && (nodes = unique(nodes));
|
|
}
|
|
} else {
|
|
if (f[0]) {
|
|
nodes = f[0](h[0](), callback, context, nodes);
|
|
} else {
|
|
nodes = h[0]();
|
|
}
|
|
}
|
|
return typeof callback == 'function' ?
|
|
concatCall(nodes, callback) : nodes;
|
|
}
|
|
}
|
|
}
|
|
|
|
lastSelected = selectors;
|
|
|
|
// arguments validation
|
|
if (arguments.length === 0) {
|
|
emit(qsNotArgs, TypeError);
|
|
return Config.VERBOSITY ? undefined : none;
|
|
} else if (arguments[0] === '') {
|
|
emit('\'\'' + qsInvalid);
|
|
return Config.VERBOSITY ? undefined : none;
|
|
} else if (lastContext !== context) {
|
|
lastContext = switchContext(context);
|
|
}
|
|
|
|
// input NULL or UNDEFINED
|
|
if (typeof selectors != 'string') {
|
|
selectors = '' + selectors;
|
|
}
|
|
|
|
if ((/:scope/i).test(selectors)) {
|
|
selectors = makeref(selectors, context);
|
|
}
|
|
|
|
// normalize input string
|
|
parsed = selectors.
|
|
replace(/\x00|\\$/g, '\ufffd').
|
|
replace(REX.CombineWSP, '\x20').
|
|
replace(REX.PseudosWSP, '$1').
|
|
replace(REX.TabCharWSP, '\t').
|
|
replace(REX.CommaGroup, ',').
|
|
replace(REX.TrimSpaces, '');
|
|
|
|
// parse, validate and split possible compound selectors
|
|
if ((expressions = parsed.match(reValidator)) && expressions.join('') == parsed) {
|
|
expressions = parsed.match(REX.SplitGroup);
|
|
if (parsed[parsed.length - 1] == ',') {
|
|
emit(qsInvalid);
|
|
return Config.VERBOSITY ? undefined : false;
|
|
}
|
|
} else {
|
|
emit('\'' + selectors + '\'' + qsInvalid);
|
|
return Config.VERBOSITY ? undefined : false;
|
|
}
|
|
|
|
// save/reuse factory and closure collection
|
|
selectResolvers[selectors] = collect(expressions, context, callback);
|
|
|
|
nodes = selectResolvers[selectors].results;
|
|
|
|
return typeof callback == 'function' ?
|
|
concatCall(nodes, callback) : nodes;
|
|
},
|
|
|
|
// optimize selectors avoiding duplicated checks
|
|
optimize =
|
|
function(selector, token) {
|
|
var index = token.index,
|
|
length = token[1].length + token[2].length;
|
|
return selector.slice(0, index) +
|
|
(' >+~'.indexOf(selector.charAt(index - 1)) > -1 ?
|
|
(':['.indexOf(selector.charAt(index + length + 1)) > -1 ?
|
|
'*' : '') : '') + selector.slice(index + length - (token[1] == '*' ? 1 : 0));
|
|
},
|
|
|
|
// prepare factory resolvers and closure collections
|
|
collect =
|
|
function(selectors, context, callback) {
|
|
|
|
var i, l, seen = { }, token = ['', '*', '*'], optimized = selectors,
|
|
factory = [ ], htmlset = [ ], nodeset = [ ], results = [ ], type;
|
|
|
|
for (i = 0, l = selectors.length; l > i; ++i) {
|
|
|
|
if (!seen[selectors[i]] && (seen[selectors[i]] = true)) {
|
|
type = selectors[i].match(reOptimizer);
|
|
if (type && type[1] != ':' && (token = type)) {
|
|
token[1] || (token[1] = '*');
|
|
optimized[i] = optimize(optimized[i], token);
|
|
} else {
|
|
token = ['', '*', '*'];
|
|
}
|
|
}
|
|
|
|
nodeset[i] = token[1] + token[2];
|
|
htmlset[i] = compat[token[1]](context, token[2]);
|
|
factory[i] = compile(optimized[i], true, null);
|
|
|
|
factory[i] ?
|
|
factory[i](htmlset[i](), callback, context, results) :
|
|
result.concat(htmlset[i]());
|
|
}
|
|
|
|
if (l > 1) {
|
|
results.sort(documentOrder);
|
|
hasDupes && (results = unique(results));
|
|
}
|
|
|
|
return {
|
|
callback: callback,
|
|
context: context,
|
|
factory: factory,
|
|
htmlset: htmlset,
|
|
nodeset: nodeset,
|
|
results: results
|
|
};
|
|
|
|
},
|
|
|
|
// QSA placeholders to native references
|
|
_closest, _matches, _querySelector, _querySelectorAll,
|
|
|
|
// overrides QSA methods (only for browsers)
|
|
install =
|
|
function(all) {
|
|
|
|
// save native QSA references
|
|
_closest = Element.prototype.closest;
|
|
_matches = Element.prototype.matches;
|
|
_querySelector = Document.prototype.querySelector;
|
|
_querySelectorAll = Document.prototype.querySelectorAll;
|
|
|
|
Element.prototype.closest =
|
|
function closest() {
|
|
var ctor = Object.getPrototypeOf(this).__proto__.__proto__.constructor.name;
|
|
if (!('nodeType' in this)) { emit('\'closest\' called on an object that does not implement interface ' + ctor + '.', TypeError); }
|
|
return arguments.length < 1 ? ancestor.apply(this, [ ]) :
|
|
arguments.length < 2 ? ancestor.apply(this, [ arguments[0], this ]) :
|
|
ancestor.apply(this, [ arguments[0], this, typeof arguments[1] == 'function' ? arguments[1] : undefined ]);
|
|
};
|
|
|
|
Element.prototype.matches =
|
|
function matches() {
|
|
var ctor = Object.getPrototypeOf(this).__proto__.__proto__.constructor.name;
|
|
if (!('nodeType' in this)) { emit('\'matches\' called on an object that does not implement interface ' + ctor + '.', TypeError); }
|
|
return arguments.length < 1 ? match.apply(this, [ ]) :
|
|
arguments.length < 2 ? match.apply(this, [ arguments[0], this ]) :
|
|
match.apply(this, [ arguments[0], this, typeof arguments[1] == 'function' ? arguments[1] : undefined ]);
|
|
};
|
|
|
|
Element.prototype.querySelector =
|
|
Document.prototype.querySelector =
|
|
DocumentFragment.prototype.querySelector =
|
|
function querySelector() {
|
|
var ctor = Object.getPrototypeOf(this).__proto__.__proto__.constructor.name;
|
|
if (!('nodeType' in this)) { emit('\'querySelector\' called on an object that does not implement interface ' + ctor + '.', TypeError); }
|
|
return arguments.length < 1 ? first.apply(this, [ ]) :
|
|
arguments.length < 2 ? first.apply(this, [ arguments[0], this ]) :
|
|
first.apply(this, [ arguments[0], this, typeof arguments[1] == 'function' ? arguments[1] : undefined ]);
|
|
};
|
|
|
|
Element.prototype.querySelectorAll =
|
|
Document.prototype.querySelectorAll =
|
|
DocumentFragment.prototype.querySelectorAll =
|
|
function querySelectorAll() {
|
|
var ctor = Object.getPrototypeOf(this).__proto__.__proto__.constructor.name;
|
|
if (!('nodeType' in this)) { emit('\'querySelectorAll\' called on an object that does not implement interface ' + ctor + '.', TypeError); }
|
|
return arguments.length < 1 ? select.apply(this, [ ]) :
|
|
arguments.length < 2 ? select.apply(this, [ arguments[0], this ]) :
|
|
select.apply(this, [ arguments[0], this, typeof arguments[1] == 'function' ? arguments[1] : undefined ]);
|
|
};
|
|
|
|
if (all) {
|
|
document.addEventListener('load', function(e) {
|
|
var c, d, r, s, t = e.target;
|
|
if (/iframe/i.test(t.localName)) {
|
|
c = '(' + Export + ')(this, ' + Factory + ');'; d = t.contentDocument;
|
|
s = d.createElement('script'); s.textContent = c + 'NW.Dom.install()';
|
|
r = d.documentElement; r.removeChild(r.insertBefore(s, r.firstChild));
|
|
}
|
|
}, true);
|
|
}
|
|
|
|
},
|
|
|
|
// restore QSA methods (only for browsers)
|
|
uninstall =
|
|
function() {
|
|
// reinstates QSA native references
|
|
Element.prototype.closest = _closest;
|
|
Element.prototype.matches = _matches;
|
|
Element.prototype.querySelector =
|
|
Document.prototype.querySelector =
|
|
DocumentFragment.prototype.querySelector = _querySelector;
|
|
Element.prototype.querySelectorAll =
|
|
Document.prototype.querySelectorAll =
|
|
DocumentFragment.prototype.querySelectorAll = _querySelectorAll;
|
|
},
|
|
|
|
// empty set
|
|
none = Array(),
|
|
|
|
// context
|
|
lastContext,
|
|
|
|
// selector
|
|
lastMatched,
|
|
lastSelected,
|
|
|
|
// cached lambdas
|
|
matchLambdas = { },
|
|
selectLambdas = { },
|
|
|
|
// cached resolvers
|
|
matchResolvers = { },
|
|
selectResolvers = { },
|
|
|
|
// passed to resolvers
|
|
Snapshot = {
|
|
|
|
doc: doc,
|
|
from: doc,
|
|
root: root,
|
|
|
|
byTag: byTag,
|
|
|
|
first: first,
|
|
match: match,
|
|
|
|
ancestor: ancestor,
|
|
|
|
nthOfType: nthOfType,
|
|
nthElement: nthElement,
|
|
|
|
hasAttributeNS: hasAttributeNS
|
|
},
|
|
|
|
// public exported methods/objects
|
|
Dom = {
|
|
|
|
// exported cache objects
|
|
|
|
lastMatched: lastMatched,
|
|
lastSelected: lastSelected,
|
|
|
|
matchLambdas: matchLambdas,
|
|
selectLambdas: selectLambdas,
|
|
|
|
matchResolvers: matchResolvers,
|
|
selectResolvers: selectResolvers,
|
|
|
|
// exported compiler macros
|
|
|
|
CFG: CFG,
|
|
|
|
M_BODY: M_BODY,
|
|
S_BODY: S_BODY,
|
|
M_TEST: M_TEST,
|
|
S_TEST: S_TEST,
|
|
|
|
// exported engine methods
|
|
|
|
byId: byId,
|
|
byTag: byTag,
|
|
byClass: byClass,
|
|
|
|
match: match,
|
|
first: first,
|
|
select: select,
|
|
closest: ancestor,
|
|
|
|
compile: compile,
|
|
configure: configure,
|
|
|
|
emit: emit,
|
|
Config: Config,
|
|
Snapshot: Snapshot,
|
|
|
|
Version: version,
|
|
|
|
install: install,
|
|
uninstall: uninstall,
|
|
|
|
Operators: Operators,
|
|
Selectors: Selectors,
|
|
|
|
// register a new selector combinator symbol and its related function resolver
|
|
registerCombinator:
|
|
function(combinator, resolver) {
|
|
var i = 0, l = combinator.length, symbol;
|
|
for (; l > i; ++i) {
|
|
if (combinator[i] != '=') {
|
|
symbol = combinator[i];
|
|
break;
|
|
}
|
|
}
|
|
if (CFG.combinators.indexOf(symbol) < 0) {
|
|
CFG.combinators = CFG.combinators.replace('](', symbol + '](');
|
|
CFG.combinators = CFG.combinators.replace('])', symbol + '])');
|
|
Combinators[combinator] = resolver;
|
|
setIdentifierSyntax();
|
|
} else {
|
|
console.warn('Warning: the \'' + combinator + '\' combinator is already registered.');
|
|
}
|
|
},
|
|
|
|
// register a new attribute operator symbol and its related function resolver
|
|
registerOperator:
|
|
function(operator, resolver) {
|
|
var i = 0, l = operator.length, symbol;
|
|
for (; l > i; ++i) {
|
|
if (operator[i] != '=') {
|
|
symbol = operator[i];
|
|
break;
|
|
}
|
|
}
|
|
if (CFG.operators.indexOf(symbol) < 0 && !Operators[operator]) {
|
|
CFG.operators = CFG.operators.replace(']=', symbol + ']=');
|
|
Operators[operator] = resolver;
|
|
setIdentifierSyntax();
|
|
} else {
|
|
console.warn('Warning: the \'' + operator + '\' operator is already registered.');
|
|
}
|
|
},
|
|
|
|
// register a new selector symbol and its related function resolver
|
|
registerSelector:
|
|
function(name, rexp, func) {
|
|
Selectors[name] || (Selectors[name] = {
|
|
Expression: rexp,
|
|
Callback: func
|
|
});
|
|
}
|
|
|
|
};
|
|
|
|
initialize(doc);
|
|
|
|
return Dom;
|
|
|
|
});
|