是否有一个孩子控制器继承服务&QUOT的方式;喜欢"例如从其父? [英] Is there a way for a child controller to inherit a service "like" instance from its parent?
问题描述
在我的应用我有窗口实例。该应用程序可以包含多个窗口和窗口可以包含多个视图。该意见是每个窗口实例的孩子。
In my app I have window instances. The app can contain multiple windows and windows can contain multiple views. The views are children of each window instance.
function windowController($scope, WindowService) {
WindowService.setWindowConfig($scope.window);
}
function viewController($scope, WindowService) {
WindowService.updateDirtyState(true);
}
我希望能够从视图(多个)更新窗口。但我只希望孩子们能够更新他们的父窗口。在于服务是单身,视图将更新所有窗口。
I want to be able to update the window from the view(s). But I only want the children to be able to update their parent window. Being that services are singletons, the view would update all windows.
有没有办法实现这一目标而不传递某种各地的ID?
Is there a way to achieve this without passing some sort of ID around?
推荐答案
服务的是的单身人士,但可以包含比他们回到一个其他对象的构造函数。
Services are singletons, but they can contain constructors for objects other than the one they return.
下面是利用了这个事实服务的骨架例如:
Here is a skeleton example of a service which takes advantage of this fact:
.factory('WindowService', function(){
var service = {};
var Window = function() {
...
};
Window.prototype.doSomething = function(){
...
};
var View = function(window) {
this.window = window;
};
service.newWindow = function(){
return new Window();
}
service.newView = function(){
return new View(window);
}
return service;
});
假设每个的ViewController
都有自己的 WindowController
家长,他们可以被实例化这种方式:
Assuming every ViewController
has its own WindowController
parent, they could be instantiated this way:
.controller('WindowController', function($scope, WindowService){
$scope.window = WindowService.newWindow();
})
.controller('ViewController', function($scope, WindowService){
$scope.view = WindowService.newView($scope.window);
})
有没有理由担心的ID,因为视图对象将包含对它们的窗口父母引用。事实上,如果所有的的ViewController
活动的一个 WindowController
父母,你可以引用该范围的变量通过原型继承,通过 $ scope.window
从视图,绕过 WindowService
的窗口对象的访问。
There is no reason to worry about id's since the view objects will contain references to their window parents. In fact, if all ViewController
s have a WindowController
parent, you could reference that scope variable through prototypical inheritance, via $scope.window
from the view, bypassing WindowService
for window object access.
.controller('ViewController', function($scope, WindowService){
$scope.view = WindowService.newView($scope.window);
// don't need to do $scope.view.window.doSomething(), but you could
$scope.window.doSomething();
})
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