| 1 | /*
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| 2 | * Copyright (C) 2007-2017 Diego Perini
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * this is just a small example to show
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| 6 | * how an extension for NWMatcher could be
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| 7 | * adapted to handle special jQuery selectors
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| 8 | *
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| 9 | * Child Selectors
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| 10 | * :even, :odd, :eq, :lt, :gt, :first, :last, :nth
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| 11 | *
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| 12 | * Pseudo Selectors
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| 13 | * :has, :button, :header, :input, :checkbox, :radio, :file, :image
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| 14 | * :password, :reset, :submit, :text, :hidden, :visible, :parent
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| 15 | *
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| 16 | */
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| 17 |
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| 18 | // for structural pseudo-classes extensions
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| 19 | NW.Dom.registerSelector(
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| 20 | 'jquery:child',
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| 21 | /^\:((?:(nth|eq|lt|gt)\(([^()]*)\))|(?:even|odd|first|last))(.*)/i,
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| 22 | (function(global) {
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| 23 |
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| 24 | return function(match, source, mode, callback) {
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| 25 |
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| 26 | var status = true,
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| 27 | macro = mode ? NW.Dom.S_BODY : NW.Dom.M_BODY;
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| 28 |
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| 29 | macro = macro.replace('@', typeof callback == 'function' ? (mode ? NW.Dom.S_TEST : NW.Dom.M_TEST) : '');
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| 30 |
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| 31 | switch (match[1].toLowerCase()) {
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| 32 | case 'odd':
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| 33 | source = source.replace(macro, 'if((n=n^1)==0){' + macro + '}');
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| 34 | break;
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| 35 | case 'even':
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| 36 | source = source.replace(macro, 'if((n=n^1)==1){' + macro + '}');
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| 37 | break;
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| 38 | case 'first':
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| 39 | source = 'n=s.root.getElementsByTagName(e.nodeName);if(n.length&&n[0]===e){' + source + '}';
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| 40 | break;
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| 41 | case 'last':
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| 42 | source = 'n=s.root.getElementsByTagName(e.nodeName);if(n.length&&n[n.length-1]===e){' + source + '}';
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| 43 | break;
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| 44 | default:
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| 45 | switch (match[2].toLowerCase()) {
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| 46 | case 'nth':
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| 47 | source = 'n=s.root.getElementsByTagName(e.nodeName);if(n.length&&n[' + match[3] + ']===e){' + source + '}';
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| 48 | break;
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| 49 | case 'eq':
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| 50 | source = source.replace(macro, 'if(x++==' + match[3] + '){' + macro + '}');
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| 51 | break;
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| 52 | case 'lt':
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| 53 | source = source.replace(macro, 'if(x++<' + match[3] + '){' + macro + '}');
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| 54 | break;
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| 55 | case 'gt':
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| 56 | source = source.replace(macro, 'if(x++>' + match[3] + '){' + macro + '}');
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| 57 | break;
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| 58 | default:
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| 59 | status = false;
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| 60 | break;
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| 61 | }
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| 62 | break;
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| 63 | }
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| 64 |
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| 65 | // compiler will add this to "source"
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| 66 | return {
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| 67 | 'source': source,
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| 68 | 'status': status,
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| 69 | 'modvar': 'x=0'
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| 70 | };
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| 71 |
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| 72 | };
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| 73 |
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| 74 | })(this));
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| 75 |
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| 76 | // for element pseudo-classes extensions
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| 77 | NW.Dom.registerSelector(
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| 78 | 'jquery:pseudo',
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| 79 | /^\:(has|checkbox|file|image|password|radio|reset|submit|text|button|input|header|hidden|visible|parent)(?:\(\s*(["']*)?([^'"()]*)\2\s*\))?(.*)/i,
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| 80 | (function(global) {
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| 81 |
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| 82 | return function(match, source, mode, callback) {
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| 83 |
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| 84 | var status = true,
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| 85 | macro = mode ? NW.Dom.S_BODY : NW.Dom.M_BODY;
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| 86 |
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| 87 | macro = macro.replace('@', typeof callback == 'function' ? (mode ? NW.Dom.S_TEST : NW.Dom.M_TEST) : '');
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| 88 |
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| 89 | switch(match[1].toLowerCase()) {
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| 90 | case 'has':
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| 91 | source = source.replace(macro, 'if(e.getElementsByTagName("' + match[3].replace(/^\s|\s$/g, '') + '")[0]){' + macro + '}');
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| 92 | break;
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| 93 | case 'checkbox':
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| 94 | case 'file':
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| 95 | case 'image':
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| 96 | case 'password':
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| 97 | case 'radio':
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| 98 | case 'reset':
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| 99 | case 'submit':
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| 100 | case 'text':
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| 101 | // :checkbox, :file, :image, :password, :radio, :reset, :submit, :text
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| 102 | source = 'if(/^' + match[1] + '$/i.test(e.type)){' + source + '}';
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| 103 | break;
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| 104 | case 'button':
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| 105 | source = 'if(/^button$/i.test(e.nodeName)){' + source + '}';
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| 106 | break;
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| 107 | case 'input':
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| 108 | source = 'if(/^(?:button|input|select|textarea)$/i.test(e.nodeName)){' + source + '}';
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| 109 | break;
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| 110 | case 'header':
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| 111 | source = 'if(/^h[1-6]$/i.test(e.nodeName)){' + source + '}';
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| 112 | break;
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| 113 | case 'hidden':
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| 114 | source = 'if(!e.offsetWidth&&!e.offsetHeight){' + source + '}';
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| 115 | break;
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| 116 | case 'visible':
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| 117 | source = 'if(e.offsetWidth||e.offsetHeight){' + source + '}';
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| 118 | break;
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| 119 | case 'parent':
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| 120 | source = 'if(e.firstChild){' + source + '}';
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| 121 | break;
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| 122 | default:
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| 123 | status = false;
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| 124 | break;
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| 125 | }
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| 126 |
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| 127 | // compiler will add this to "source"
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| 128 | return {
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| 129 | 'source': source,
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| 130 | 'status': status
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| 131 | };
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| 132 |
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| 133 | };
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| 134 |
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| 135 | })(this));
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