/*
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* Copyright (C) 2007-2017 Diego Perini
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* All rights reserved.
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*
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* this is just a small example to show
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* how an extension for NWMatcher could be
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* adapted to handle special jQuery selectors
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*
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* Child Selectors
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* :even, :odd, :eq, :lt, :gt, :first, :last, :nth
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*
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* Pseudo Selectors
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* :has, :button, :header, :input, :checkbox, :radio, :file, :image
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* :password, :reset, :submit, :text, :hidden, :visible, :parent
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*
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*/
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// for structural pseudo-classes extensions
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NW.Dom.registerSelector(
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'jquery:child',
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/^\:((?:(nth|eq|lt|gt)\(([^()]*)\))|(?:even|odd|first|last))(.*)/i,
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(function(global) {
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return function(match, source, mode, callback) {
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var status = true,
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macro = mode ? NW.Dom.S_BODY : NW.Dom.M_BODY;
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macro = macro.replace('@', typeof callback == 'function' ? (mode ? NW.Dom.S_TEST : NW.Dom.M_TEST) : '');
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switch (match[1].toLowerCase()) {
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case 'odd':
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source = source.replace(macro, 'if((n=n^1)==0){' + macro + '}');
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break;
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case 'even':
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source = source.replace(macro, 'if((n=n^1)==1){' + macro + '}');
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break;
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case 'first':
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source = 'n=s.root.getElementsByTagName(e.nodeName);if(n.length&&n[0]===e){' + source + '}';
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break;
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case 'last':
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source = 'n=s.root.getElementsByTagName(e.nodeName);if(n.length&&n[n.length-1]===e){' + source + '}';
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break;
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default:
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switch (match[2].toLowerCase()) {
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case 'nth':
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source = 'n=s.root.getElementsByTagName(e.nodeName);if(n.length&&n[' + match[3] + ']===e){' + source + '}';
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break;
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case 'eq':
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source = source.replace(macro, 'if(x++==' + match[3] + '){' + macro + '}');
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break;
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case 'lt':
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source = source.replace(macro, 'if(x++<' + match[3] + '){' + macro + '}');
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break;
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case 'gt':
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source = source.replace(macro, 'if(x++>' + match[3] + '){' + macro + '}');
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break;
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default:
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status = false;
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break;
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}
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break;
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}
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// compiler will add this to "source"
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return {
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'source': source,
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'status': status,
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'modvar': 'x=0'
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};
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};
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})(this));
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// for element pseudo-classes extensions
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NW.Dom.registerSelector(
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'jquery:pseudo',
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/^\:(has|checkbox|file|image|password|radio|reset|submit|text|button|input|header|hidden|visible|parent)(?:\(\s*(["']*)?([^'"()]*)\2\s*\))?(.*)/i,
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(function(global) {
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return function(match, source, mode, callback) {
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var status = true,
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macro = mode ? NW.Dom.S_BODY : NW.Dom.M_BODY;
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macro = macro.replace('@', typeof callback == 'function' ? (mode ? NW.Dom.S_TEST : NW.Dom.M_TEST) : '');
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switch(match[1].toLowerCase()) {
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case 'has':
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source = source.replace(macro, 'if(e.getElementsByTagName("' + match[3].replace(/^\s|\s$/g, '') + '")[0]){' + macro + '}');
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break;
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case 'checkbox':
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case 'file':
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case 'image':
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case 'password':
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case 'radio':
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case 'reset':
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case 'submit':
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case 'text':
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// :checkbox, :file, :image, :password, :radio, :reset, :submit, :text
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source = 'if(/^' + match[1] + '$/i.test(e.type)){' + source + '}';
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break;
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case 'button':
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source = 'if(/^button$/i.test(e.nodeName)){' + source + '}';
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break;
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case 'input':
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source = 'if(/^(?:button|input|select|textarea)$/i.test(e.nodeName)){' + source + '}';
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break;
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case 'header':
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source = 'if(/^h[1-6]$/i.test(e.nodeName)){' + source + '}';
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break;
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case 'hidden':
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source = 'if(!e.offsetWidth&&!e.offsetHeight){' + source + '}';
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break;
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case 'visible':
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source = 'if(e.offsetWidth||e.offsetHeight){' + source + '}';
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break;
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case 'parent':
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source = 'if(e.firstChild){' + source + '}';
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break;
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default:
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status = false;
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break;
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}
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// compiler will add this to "source"
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return {
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'source': source,
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'status': status
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};
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};
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})(this));
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