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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 /**
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6 * Checks the current set of elements against the selector, if one matches return `true`.
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7 *
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8 * @param {string} selector The selector to check.
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9 * @return {boolean}
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10 * @this {shoestring}
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11 */
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12 shoestring.fn.is = function( selector ){
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13 var ret = false, self = this, parents, check;
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14
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15 // assume a dom element
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16 if( typeof selector !== "string" ){
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17 // array-like, ie shoestring objects or element arrays
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18 if( selector.length && selector[0] ){
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19 check = selector;
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20 } else {
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21 check = [selector];
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22 }
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23
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24 return _checkElements(this, check);
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25 }
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26
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27 parents = this.parent();
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28
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29 if( !parents.length ){
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30 parents = shoestring( doc );
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31 }
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32
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33 parents.each(function( i, e ) {
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34 var children;
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35
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36 //>>includeStart("development", pragmas.development);
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37 try {
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38 //>>includeEnd("development");
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39 children = e.querySelectorAll( selector );
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40 //>>includeStart("development", pragmas.development);
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41 } catch( e ) {
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42 shoestring.error( 'queryselector', selector );
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43 }
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44 //>>includeEnd("development");
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45
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46 ret = _checkElements( self, children );
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47 });
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48
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49 return ret;
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50 };
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51
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52 function _checkElements(needles, haystack){
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53 var ret = false;
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54
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55 needles.each(function() {
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56 var j = 0;
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57
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58 while( j < haystack.length ){
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59 if( this === haystack[j] ){
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60 ret = true;
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61 }
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62
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63 j++;
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64 }
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65 });
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66
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67 return ret;
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68 }
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69
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70 //>>excludeStart("exclude", pragmas.exclude);
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71 });
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72 //>>excludeEnd("exclude");
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