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node_modules/nwmatcher/src/modules/nwmatcher-pseudos.js
Maintainability
56.86
Lines of code
250
Difficulty
43.07
Estimated Errors
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/* * Copyright (C) 2007-2015 Diego Perini * All rights reserved. * * CSS3 pseudo-classes extension for NWMatcher * * Added capabilities: * * - structural pseudo-classes * * :root, :empty, * :nth-child(), nth-of-type(), * :nth-last-child(), nth-last-of-type(), * :first-child, :last-child, :only-child * :first-of-type, :last-of-type, :only-of-type * * - negation, language, target and UI element pseudo-classes * * :not(), :target, :lang(), :target * :link, :visited, :active, :focus, :hover, * :checked, :disabled, :enabled, :selected */ (function(global) { var LINK_NODES = global.Object({ 'a': 1, 'A': 1, 'area': 1, 'AREA': 1, 'link': 1, 'LINK': 1 }), root = document.documentElement, contains = 'compareDocumentPosition' in root ? function(container, element) { return (container.compareDocumentPosition(element) & 16) == 16; } : 'contains' in root ? function(container, element) { return element.nodeType == 1 && container.contains(element); } : function(container, element) { while ((element = element.parentNode) && element.nodeType == 1) { if (element === container) return true; } return false; }, isLink = function(element) { return element.getAttribute('href') && LINK_NODES[element.nodeName]; }, isEmpty = function(node) { node = node.firstChild; while (node) { if (node.nodeType == 3 || node.nodeName > '@') return false; node = node.nextSibling; } return true; }, nthElement = function(element, last) { var count = 1, succ = last ? 'nextSibling' : 'previousSibling'; while ((element = element[succ])) { if (element.nodeName > '@') ++count; } return count; }, nthOfType = function(element, last) { var count = 1, succ = last ? 'nextSibling' : 'previousSibling', type = element.nodeName; while ((element = element[succ])) { if (element.nodeName == type) ++count; } return count; }; NW.Dom.Snapshot['contains'] = contains; NW.Dom.Snapshot['isLink'] = isLink; NW.Dom.Snapshot['isEmpty'] = isEmpty; NW.Dom.Snapshot['nthOfType'] = nthOfType; NW.Dom.Snapshot['nthElement'] = nthElement; })(this); NW.Dom.registerSelector( 'nwmatcher:spseudos', /^\:(root|empty|(?:first|last|only)(?:-child|-of-type)|nth(?:-last)?(?:-child|-of-type)\(\s*(even|odd|(?:[-+]{0,1}\d*n\s*)?[-+]{0,1}\s*\d*)\s*\))?(.*)/i, (function(global) { return function(match, source) { var a, n, b, status = true, test, type; switch (match[1]) { case 'root': if (match[3]) source = 'if(e===h||s.contains(h,e)){' + source + '}'; else source = 'if(e===h){' + source + '}'; break; case 'empty': source = 'if(s.isEmpty(e)){' + source + '}'; break; default: if (match[1] && match[2]) { if (match[2] == 'n') { source = 'if(e!==h){' + source + '}'; break; } else if (match[2] == 'even') { a = 2; b = 0; } else if (match[2] == 'odd') { a = 2; b = 1; } else { b = ((n = match[2].match(/(-?\d+)$/)) ? global.parseInt(n[1], 10) : 0); a = ((n = match[2].match(/(-?\d*)n/i)) ? global.parseInt(n[1], 10) : 0); if (n && n[1] == '-') a = -1; } test = a > 1 ? (/last/i.test(match[1])) ? '(n-(' + b + '))%' + a + '==0' : 'n>=' + b + '&&(n-(' + b + '))%' + a + '==0' : a < -1 ? (/last/i.test(match[1])) ? '(n-(' + b + '))%' + a + '==0' : 'n<=' + b + '&&(n-(' + b + '))%' + a + '==0' : a === 0 ? 'n==' + b : a == -1 ? 'n<=' + b : 'n>=' + b; source = 'if(e!==h){' + 'n=s[' + (/-of-type/i.test(match[1]) ? '"nthOfType"' : '"nthElement"') + ']' + '(e,' + (/last/i.test(match[1]) ? 'true' : 'false') + ');' + 'if(' + test + '){' + source + '}' + '}'; } else if (match[1]) { a = /first/i.test(match[1]) ? 'previous' : 'next'; n = /only/i.test(match[1]) ? 'previous' : 'next'; b = /first|last/i.test(match[1]); type = /-of-type/i.test(match[1]) ? '&&n.nodeName!==e.nodeName' : '&&n.nodeName<"@"'; source = 'if(e!==h){' + ( 'n=e;while((n=n.' + a + 'Sibling)' + type + ');if(!n){' + (b ? source : 'n=e;while((n=n.' + n + 'Sibling)' + type + ');if(!n){' + source + '}') + '}' ) + '}'; } else { status = false; } break; } return global.Object({ 'source': source, 'status': status }); }; })(this)); NW.Dom.registerSelector( 'nwmatcher:dpseudos', /^\:(link|visited|target|active|focus|hover|checked|disabled|enabled|selected|lang\(([-\w]{2,})\)|not\(([^()]*|.*)\))?(.*)/i, (function(global) { var doc = global.document, Config = NW.Dom.Config, Tokens = NW.Dom.Tokens, reTrimSpace = global.RegExp('^\\s+|\\s+$', 'g'), reSimpleNot = global.RegExp('^((?!:not)' + '(' + Tokens.prefixes + '|' + Tokens.identifier + '|\\([^()]*\\))+|\\[' + Tokens.attributes + '\\])$'); return function(match, source) { var expr, status = true, test; switch (match[1].match(/^\w+/)[0]) { case 'not': expr = match[3].replace(reTrimSpace, ''); if (Config.SIMPLENOT && !reSimpleNot.test(expr)) { NW.Dom.emit('Negation pseudo-class only accepts simple selectors "' + match.join('') + '"'); } else { if ('compatMode' in doc) { source = 'if(!' + NW.Dom.compile(expr, '', false) + '(e,s,r,d,h,g)){' + source + '}'; } else { source = 'if(!s.match(e, "' + expr.replace(/\x22/g, '\\"') + '",g)){' + source +'}'; } } break; case 'checked': source = 'if((typeof e.form!=="undefined"&&(/^(?:radio|checkbox)$/i).test(e.type)&&e.checked)' + (Config.USE_HTML5 ? '||(/^option$/i.test(e.nodeName)&&(e.selected||e.checked))' : '') + '){' + source + '}'; break; case 'disabled': source = 'if(((typeof e.form!=="undefined"' + (Config.USE_HTML5 ? '' : '&&!(/^hidden$/i).test(e.type)') + ')||s.isLink(e))&&e.disabled===true){' + source + '}'; break; case 'enabled': source = 'if(((typeof e.form!=="undefined"' + (Config.USE_HTML5 ? '' : '&&!(/^hidden$/i).test(e.type)') + ')||s.isLink(e))&&e.disabled===false){' + source + '}'; break; case 'lang': test = ''; if (match[2]) test = match[2].substr(0, 2) + '-'; source = 'do{(n=e.lang||"").toLowerCase();' + 'if((n==""&&h.lang=="' + match[2].toLowerCase() + '")||' + '(n&&(n=="' + match[2].toLowerCase() + '"||n.substr(0,3)=="' + test.toLowerCase() + '")))' + '{' + source + 'break;}}while((e=e.parentNode)&&e!==g);'; break; case 'target': source = 'if(e.id==d.location.hash.slice(1)){' + source + '}'; break; case 'link': source = 'if(s.isLink(e)&&!e.visited){' + source + '}'; break; case 'visited': source = 'if(s.isLink(e)&&e.visited){' + source + '}'; break; case 'active': source = 'if(e===d.activeElement){' + source + '}'; break; case 'hover': source = 'if(e===d.hoverElement){' + source + '}'; break; case 'focus': source = 'hasFocus' in doc ? 'if(e===d.activeElement&&d.hasFocus()&&(e.type||e.href||typeof e.tabIndex=="number")){' + source + '}' : 'if(e===d.activeElement&&(e.type||e.href)){' + source + '}'; break; case 'selected': source = 'if(/^option$/i.test(e.nodeName)&&(e.selected||e.checked)){' + source + '}'; break; default: status = false; break; } return global.Object({ 'source': source, 'status': status }); }; })(this));