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1 //>>excludeStart("exclude", pragmas.exclude);
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2 define([ "shoestring" ], function(){
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3 //>>excludeEnd("exclude");
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4
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5 (function() {
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6 function _getIndex( set, test ) {
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7 var i, result, element;
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8
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9 for( i = result = 0; i < set.length; i++ ) {
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10 element = set.item ? set.item(i) : set[i];
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11
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12 if( test(element) ){
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13 return result;
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14 }
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15
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16 // ignore text nodes, etc
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17 // NOTE may need to be more permissive
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18 if( element.nodeType === 1 ){
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19 result++;
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20 }
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21 }
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22
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23 return -1;
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24 }
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25
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26 /**
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27 * Find the index in the current set for the passed selector.
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28 * Without a selector it returns the index of the first node within the array of its siblings.
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29 *
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30 * @param {string|undefined} selector The selector used to search for the index.
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31 * @return {integer}
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32 * @this {shoestring}
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33 */
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34 shoestring.fn.index = function( selector ){
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35 var self, children;
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36
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37 self = this;
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38
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39 // no arg? check the children, otherwise check each element that matches
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40 if( selector === undefined ){
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41 children = ( ( this[ 0 ] && this[0].parentNode ) || doc.documentElement).childNodes;
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42
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43 // check if the element matches the first of the set
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44 return _getIndex(children, function( element ) {
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45 return self[0] === element;
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46 });
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47 } else {
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48 //>>includeStart("development", pragmas.development);
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49 if( selector.constructor === shoestring.Shoestring ) {
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50 shoestring.error( "index-shoestring-object" );
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51 }
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52 //>>includeEnd("development");
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53
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54 // check if the element matches the first selected node from the parent
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55 return _getIndex(self, function( element ) {
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56 return element === (shoestring( selector, element.parentNode )[ 0 ]);
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57 });
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58 }
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59 };
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60 })();
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61
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62 //>>excludeStart("exclude", pragmas.exclude);
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63 });
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64 //>>excludeEnd("exclude");
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