任何解释为什么 angular-ui-router ( https://github.com/angular-ui/ui-router ) 的示例代码 (ui-router/sample/index.html ) 看起来像这样。具体来说：
- 为什么像控制器这样的对象的嵌套定义？
为什么这样的依赖规范：
angular.module('sample', ['ui.compat']) .config( ['$stateProvider', '$routeProvider', '$urlRouterProvider', function ($stateProvider, $routeProvider, $urlRouterProvider) {
谢谢
<!doctype html>
<html lang="en" ng-app="sample"><head>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="bootstrap.min.css">
<style type="text/css">
.fade-enter-setup, .fade-leave-setup {
transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0s;
}
.fade-enter-setup,
.fade-leave-setup.fade-leave-start {
opacity: 0;
}
.fade-leave-setup,
.fade-enter-setup.fade-enter-start {
opacity: 1;
}
</style>
<script src="../lib/angular-1.1.4.js"></script>
<script src="../build/angular-ui-router.js"></script>
<!-- could easily use a custom property of the state here instead of 'name' -->
<title ng-bind="$state.current.name + ' - ui-router'">ui-router</title>
</head><body>
<div class="navbar navbar-fixed-top">
<div class="navbar-inner"><div class="container">
<a class="brand" href="#">ui-router</a>
<ul class="nav">
<li ng-class="{ active: $state.includes('contacts') }"><a href="#/contacts">Contacts</a></li>
<li ng-class="{ active: $state.includes('about') }"><a href="#/about">About</a></li>
</ul>
<p class="navbar-text pull-right" ui-view="hint"></p>
</div></div>
</div>
<div class="container" style="margin-top:60px" ui-view ng-animate="{enter:'fade-enter'}"></div>
<hr>
<pre>
$state = {{$state.current.name}}
$stateParams = {{$stateParams}}
</pre>
</body><script>
function findById(a, id) {
for (var i=0; i<a.length; i++) {
if (a[i].id == id) return a[i];
}
}
angular.module('sample', ['ui.compat'])
.config(
[ '$stateProvider', '$routeProvider', '$urlRouterProvider',
function ($stateProvider, $routeProvider, $urlRouterProvider) {
$urlRouterProvider
.when('/c?id', '/contacts/:id')
.otherwise('/');
$routeProvider
.when('/user/:id', {
redirectTo: '/contacts/:id',
})
.when('/', {
template: '<p class="lead">Welcome to the ngStates sample</p><p>Use the menu above to navigate</p>' +
'<p>Look at <a href="#/c?id=1">Alice</a> or <a href="#/user/42">Bob</a> to see a URL with a redirect in action.</p>',
});
$stateProvider
.state('contacts', {
url: '/contacts',
abstract: true,
templateUrl: 'contacts.html',
controller:
[ '$scope', '$state',
function ($scope, $state) {
$scope.contacts = [{
id: 1,
name: "Alice",
items: [{
id: 'a',
type: 'phone number',
value: '555-1234-1234',
},{
id: 'b',
type: 'email',
value: 'alice@mailinator.com',
}],
}, {
id: 42,
name: "Bob",
items: [{
id: 'a',
type: 'blog',
value: 'http://bob.blogger.com',
},{
id: 'b',
type: 'fax',
value: '555-999-9999',
}],
}, {
id: 123,
name: "Eve",
items: [{
id: 'a',
type: 'full name',
value: 'Eve Adamsdottir',
}],
}];
$scope.goToRandom = function () {
var contacts = $scope.contacts, id;
do {
id = contacts[Math.floor(contacts.length * Math.random())].id;
} while (id == $state.params.contactId);
$state.transitionTo('contacts.detail', { contactId: id });
};
}],
})
.state('contacts.list', {
// parent: 'contacts',
url: '',
templateUrl: 'contacts.list.html',
})
.state('contacts.detail', {
// parent: 'contacts',
url: '/{contactId}',
resolve: {
something:
[ '$timeout', '$stateParams',
function ($timeout, $stateParams) {
return $timeout(function () { return "Asynchronously resolved data (" + $stateParams.contactId + ")" }, 10);
}],
},
views: {
'': {
templateUrl: 'contacts.detail.html',
controller:
[ '$scope', '$stateParams', 'something',
function ($scope, $stateParams, something) {
$scope.something = something;
$scope.contact = findById($scope.contacts, $stateParams.contactId);
}],
},
'hint@': {
template: 'This is contacts.detail populating the view "hint@"',
},
'menu': {
templateProvider:
[ '$stateParams',
function ($stateParams){
// This is just to demonstrate that $stateParams injection works for templateProvider
// $stateParams are the parameters for the new state we're transitioning to, even
// though the global '$stateParams' has not been updated yet.
return '<hr><small class="muted">Contact ID: ' + $stateParams.contactId + '</small>';
}],
},
},
})
.state('contacts.detail.item', {
// parent: 'contacts.detail',
url: '/item/:itemId',
views: {
'': {
templateUrl: 'contacts.detail.item.html',
controller:
[ '$scope', '$stateParams', '$state',
function ($scope, $stateParams, $state) {
$scope.item = findById($scope.contact.items, $stateParams.itemId);
$scope.edit = function () {
$state.transitionTo('contacts.detail.item.edit', $stateParams);
};
}],
},
'hint@': {
template: 'Overriding the view "hint@"',
},
},
})
.state('contacts.detail.item.edit', {
views: {
'@contacts.detail': {
templateUrl: 'contacts.detail.item.edit.html',
controller:
[ '$scope', '$stateParams', '$state',
function ($scope, $stateParams, $state) {
$scope.item = findById($scope.contact.items, $stateParams.itemId);
$scope.done = function () {
$state.transitionTo('contacts.detail.item', $stateParams);
};
}],
},
},
})
.state('about', {
url: '/about',
templateProvider:
[ '$timeout',
function ($timeout) {
return $timeout(function () { return "Hello world" }, 100);
}],
})
.state('empty', {
url: '/empty',
templateUrl: 'empty.html',
controller:
[ '$scope', '$state',
function ($scope, $state) {
// Using an object to access it via ng-model from child scope
$scope.data = {
initialViewTitle: "I am an initial view"
}
$scope.changeInitialViewTitle = function($event) {
$state.transitionTo('empty.emptycontent');
};
$scope.showInitialView = function($event) {
$state.transitionTo('empty');
};
}]
})
.state('empty.emptycontent', {
url: '/content',
views: {
'emptycontent': {
templateUrl: 'empty.content.html'
}
}
});
}])
.run(
[ '$rootScope', '$state', '$stateParams',
function ($rootScope, $state, $stateParams) {
$rootScope.$state = $state;
$rootScope.$stateParams = $stateParams;
}]);
</script></html>