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/*
YUI 3.17.2 (build 9c3c78e)
Copyright 2014 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/
YUI.add('selector-css3', function (Y, NAME) {
/**
* The selector css3 module provides support for css3 selectors.
* @module dom
* @submodule selector-css3
* @for Selector
*/
/*
an+b = get every _a_th node starting at the _b_th
0n+b = no repeat ("0" and "n" may both be omitted (together) , e.g. "0n+1" or "1", not "0+1"), return only the _b_th element
1n+b = get every element starting from b ("1" may may be omitted, e.g. "1n+0" or "n+0" or "n")
an+0 = get every _a_th element, "0" may be omitted
*/
Y.Selector._reNth = /^(?:([\-]?\d*)(n){1}|(odd|even)$)*([\-+]?\d*)$/;
Y.Selector._getNth = function(node, expr, tag, reverse) {
Y.Selector._reNth.test(expr);
var a = parseInt(RegExp.$1, 10), // include every _a_ elements (zero means no repeat, just first _a_)
n = RegExp.$2, // "n"
oddeven = RegExp.$3, // "odd" or "even"
b = parseInt(RegExp.$4, 10) || 0, // start scan from element _b_
result = [],
siblings = Y.DOM._children(node.parentNode, tag),
op;
if (oddeven) {
a = 2; // always every other
op = '+';
n = 'n';
b = (oddeven === 'odd') ? 1 : 0;
} else if ( isNaN(a) ) {
a = (n) ? 1 : 0; // start from the first or no repeat
}
if (a === 0) { // just the first
if (reverse) {
b = siblings.length - b + 1;
}
if (siblings[b - 1] === node) {
return true;
} else {
return false;
}
} else if (a < 0) {
reverse = !!reverse;
a = Math.abs(a);
}
if (!reverse) {
for (var i = b - 1, len = siblings.length; i < len; i += a) {
if ( i >= 0 && siblings[i] === node ) {
return true;
}
}
} else {
for (var i = siblings.length - b, len = siblings.length; i >= 0; i -= a) {
if ( i < len && siblings[i] === node ) {
return true;
}
}
}
return false;
};
Y.mix(Y.Selector.pseudos, {
'root': function(node) {
return node === node.ownerDocument.documentElement;
},
'nth-child': function(node, expr) {
return Y.Selector._getNth(node, expr);
},
'nth-last-child': function(node, expr) {
return Y.Selector._getNth(node, expr, null, true);
},
'nth-of-type': function(node, expr) {
return Y.Selector._getNth(node, expr, node.tagName);
},
'nth-last-of-type': function(node, expr) {
return Y.Selector._getNth(node, expr, node.tagName, true);
},
'last-child': function(node) {
var children = Y.DOM._children(node.parentNode);
return children[children.length - 1] === node;
},
'first-of-type': function(node) {
return Y.DOM._children(node.parentNode, node.tagName)[0] === node;
},
'last-of-type': function(node) {
var children = Y.DOM._children(node.parentNode, node.tagName);
return children[children.length - 1] === node;
},
'only-child': function(node) {
var children = Y.DOM._children(node.parentNode);
return children.length === 1 && children[0] === node;
},
'only-of-type': function(node) {
var children = Y.DOM._children(node.parentNode, node.tagName);
return children.length === 1 && children[0] === node;
},
'empty': function(node) {
return node.childNodes.length === 0;
},
'not': function(node, expr) {
return !Y.Selector.test(node, expr);
},
'contains': function(node, expr) {
var text = node.innerText || node.textContent || '';
return text.indexOf(expr) > -1;
},
'checked': function(node) {
return (node.checked === true || node.selected === true);
},
enabled: function(node) {
return (node.disabled !== undefined && !node.disabled);
},
disabled: function(node) {
return (node.disabled);
}
});
Y.mix(Y.Selector.operators, {
'^=': '^{val}', // Match starts with value
'$=': '{val}$', // Match ends with value
'*=': '{val}' // Match contains value as substring
});
Y.Selector.combinators['~'] = {
axis: 'previousSibling'
};
}, '3.17.2', {"requires": ["selector-native", "selector-css2"]});