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main.js
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main.js
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var app = angular.module('app', ['ngRoute']);
var __alreadyLoading = {};
// TODO(vojta): probably use RequireJS for this.
function lazyLoad(path) {
return function($q) {
if (!__alreadyLoading[path]) {
var d = $q.defer();
var s = document.createElement('script');
s.src = path;
s.onload = function() {
d.resolve();
};
document.body.appendChild(s);
__alreadyLoading[path] = d.promise;
}
return __alreadyLoading[path];
};
}
// This is the hack,
// we store refs to $provide, so that we can add more stuff to it durind run-time.
var __$provide;
var __$controllerProvider;
app.config(function($routeProvider, $provide, $controllerProvider) {
__$provide = $provide;
__$controllerProvider = $controllerProvider;
$routeProvider
.when('/list', {templateUrl: './views/list.html', resolve: {whatever: lazyLoad('./js/lazy-list.js')}, controller: 'List'})
.when('/detail', {templateUrl: './views/detail.html'})
});
// After all the initial-code has been loaded,
// patch angular.module to use the stored $provide.
// We could avoid patching angular.module and use some other API,
// such as angular.lazyModule(), but this makes it easier to load any module lazily.
angular.module = function() {
return {
service: function(name, constructor) {
__$provide.service(name, constructor);
return this;
},
controller: function(name, constructor) {
__$controllerProvider.register(name, constructor);
return this;
}
// TODO(vojta): implement other APIs
// - factory
// - value
// - directive
// - filter
};
};