(function () {
    "use strict";
    angular.module("enrMapModule")  
    .directive("enrDistrict", [function () {        
        function link(scope, element, attr) {
            scope.$watch("index", function (idx) {
                if (idx != null && angular.element("#path" + idx)) {
                    var pathElement = angular.element("#path" + idx)[0];
                    var bbox = pathElement.getBBox();
                    var centreX = bbox.x + bbox.width / 2;
                    var centreY = bbox.y + bbox.height / 2;
                    if (element) {                        
                        element.attr("x", centreX);
                        element.attr("y", centreY);                        
                    }
                }
            });

            scope.$watch("zoom", function (idx) {
                if (element != null && element != undefined) {                    
                    var pathElement = angular.element("#" + element[0].id.replace("txt", "path"))[0];
                    var bbox = pathElement.getBBox();
                    var centreX = bbox.x + bbox.width / 2;
                    var centreY = bbox.y + bbox.height / 2;
                    if (element) {
                        element.attr("x", centreX);
                        element.attr("y", centreY);
                    }
                }
            });
        }

        return {
            link: link,            
            scope: { index: "=", zoom:"=" },
            restrict: "A"            
        };
    }])
}());