Child Filters Impl

child-filters.js

// Child filters - TBD

var filters = {
   "nth-child": function(ctx, val){
       var found = [],
           val = val-1;

       for(var j = 0; j < ctx.length; j++){
           if(ctx[j][val])
               found.push(ctx[j][val]);
       }

       return found;
   },
   "first-child": function(ctx){
       return filters["nth-child"](ctx, 1);
   },
   "last-child": function(ctx){
       var found = [];

       for(var j = 0; j < ctx.length; j++){
           if(ctx[j][ctx.j.length-1])
               found.push(ctx[j][ctx.j.length-1]);
       }

       return found;
   },
   "only-child": function(ctx){
       var found = [];

       for(var j = 0; j < ctx.length; j++){
           for(var p = 0; p < ctx[j].length; p++){
               var node = ctx[j][p];
               if(node.children){
                   if(node.children.length === 0)
                       found.push(node.children[0]);
               }
           }
       }

       return found;
   }
};