Angular js ngclick doesnt work in infowindow - angularjs

Question

I created a map with Google maps. At first the infowindow is open when the init function is called. I select a place from the map $scope.kds is working and the contents of the infowindow change. There is a button in the infowindow. When I click the button doesnt work. How can I do?
window.ngApp = angular.module('test', []);
window.ngApp.controller('controllerMap', ['$scope', '$location', '$compile', function ($scope, $location, $compile) {
$scope.init = function () {
$scope.latlng = new google.maps.LatLng($scope.lat, $scope.lng);
$scope.map = new google.maps.Map(document.getElementById('map'), {
center: $scope.latlng,
zoom: $scope.zoom,
minZoom: 6,
maxZoom: 21
});
$scope.marker = new google.maps.Marker({
map: $scope.map,
position: $scope.latlng,
draggable: true,
icon: 'static/img/pin-4ldpi.png'
});
$scope.infowindow = new google.maps.InfoWindow({
content: "",
maxWidth: 175
});
google.maps.event.addListener($scope.map, 'click', function (event) {
$scope.kds ();
});
$scope.kds = function(){
$.ajax({
type: 'post',
url: "/",
dataType: 'json',
async: true,
cache: false,
data: {
mode: "getkds",
lat: data.response.lat,
lng: data.response.lng
},
success: function (data) {
if (data.response) {
$scope.cityName = data.response.cityName;
$scope.contentString = "<div class='text-center fs-16 py-3'>" + $scope.cityName + " <br>\n" +
"<a ng-click='runfunc();' class='fs-12 text-red font-sfprodisplay-600 btn btn-color3 btn-sm mt-3'>Analyses</a></div>";
$scope.infowindow.setContent($scope.contentString);
$scope.infowindow.open($scope.map, $scope.marker);
if (!$scope.$$phase) $scope.$apply();
}
}
});
}
$scope.runfunc=function(){
alert("123");
}
$scope.init();
}]);