AngularJS - 具有自己的类型/提供者的扩展模块

I want to ad a new (dialog) type to angular, so I could use it just like I use module.directive, module.filter, module.controller to register directives, filters and controllers.

我想将一个新的（对话框）类型添加到angular，所以我可以使用它，就像我使用module.directive，module.filter，module.controller来注册指令，过滤器和控制器一样。

I want to register my instances of dialog type this way:

我想以这种方式注册我的对话框类型实例：

module.dialog('prompt',function(dependencies){
    return {
        templateUrl:'prompt.html',
        controller:function($scope){},
        something:'value'
    }
});

I also want to be able to use registered dialogs in controllers (dependency injection)

我还希望能够在控制器中使用已注册的对话框（依赖注入）

module.controller('ListCtrl',function($scope,prompt){
    $scope.deleteItem = function(item){
        prompt('Do you want to delete this item?').then(function(result){
            if(result) item.$delete();
        });
    }
});

This boils down to the following questions:

这归结为以下问题：

1. How do I extend angular's module to have module.dialog register my dialog types ?

   如何扩展angular的模块以使module.dialog注册我的对话框类型？

2. How do I make my registered dialogs injectable in to controllers etc?

   如何将注册的对话框注入控制器等？

Btw,

顺便说一句，

• I know about angular-ui and angular-strap.
• 我知道angular-ui和angular-strap。
• I would rather not use dialog as a service, but as a separate type (this solution is already implemented in angular-ui).
• 我宁愿不使用对话作为服务，而是作为一个单独的类型（这个解决方案已经在angular-ui中实现）。

1 个解决方案

#1

This is a pretty interesting question. I'll prefix my answer with an opinion: I don't think you should extend angular.module to provide a dialog method. Those methods are shortcuts into built-in Angular providers, and the Angular team adds some from time to time. Since you can get access to the functionality you're looking for without adding the dialog method, I wouldn't. That said, the code below does show you how a very basic version of this might work (it doesn't modify the Angular module prototype, just the single instance of the module).

这是一个非常有趣的问题。我将在答案前加上一个观点：我不认为你应该扩展angular.module来提供一个对话方法。这些方法是内置Angular提供程序的快捷方式，Angular团队不时添加一些方法。既然你可以在不添加对话方法的情况下访问你正在寻找的功能，我就不会。也就是说，下面的代码确实向您展示了它的基本版本如何工作（它不会修改Angular模块原型，只修改模块的单个实例）。

<div ng-app="myApp">
  <div ng-controller='MainController'>
    <div>
      <button ng-click='askName()'>Ask Name</button>
      <button ng-click='askNameAgain()'>Ask Name Again</button>
      <button ng-click='askAge()'>Ask Age</button>
      <button ng-click='askFood()'>Ask Food</button>
    </div>
    <div>{{lastResponse}}</div>
  </div>
</div>

var app = angular.module('myApp', []);

// Provide some basic injectables for testing
app.constant('nameString', 'NAME');
app.constant('ageString', 'AGE');
app.constant('foodString', 'FAVORITE FOOD');

// Create the dialog provider
app.provider('dialog', function($provide, $injector) {
  var dialogs = {};

  this.register = function(name, configFn) {
    // Create a new service
    $provide.factory(name, function($window, $q) {
      dialogs[name] = function() {
        // Get data based on DI injected version of configFn
        var data = $injector.invoke(configFn);
        // faking async here since prompt is really synchronous
        var deferred = $q.defer();
        var response = $window.prompt(data.text);
        deferred.resolve(response);
        return deferred.promise;
      };
      return dialogs[name];
    });
  };

  // Injecting the service itself gives you a function that
  // allows you to access a dialog by name, much like $filter
  this.$get = function() {
    return function(name) {
      return dialogs[name];
    };
  };
});

// Providing dialog injectables via app.config
app.config(function(dialogProvider) {
  dialogProvider.register('askFood', function(foodString) {
    return { text: 'What is your ' + foodString + '?' }
  });
});

// Alternatively, shortcut to accessing the dialogProvider via app.dialog
app.dialog = function(name, configFn) {
  app.config(function(dialogProvider) {
    dialogProvider.register(name, configFn);
  });
};

app.dialog('askName', function(nameString) {
  return { text: 'What is your ' + nameString + '?' }
});

app.dialog('askAge', function(ageString) {
  return { text: 'What is your ' + ageString + '?' }
});

app.controller('MainController', 
               function($scope, askName, askAge, askFood, dialog) {
  var setLastResponse = function(result) {
    $scope.lastResponse = result;
  };

  $scope.askName = function() {
    askName().then(setLastResponse);
  };

  $scope.askNameAgain = function() {
    // get the dialog through the dialog service
    // much like how $filter works
    var theDialog = dialog('askName');
    theDialog().then(setLastResponse);
  };

  $scope.askAge = function() {
    askAge().then(setLastResponse);
  };

  $scope.askFood = function() {
    askFood().then(setLastResponse);
  };
});

Here is a working example: http://jsfiddle.net/BinaryMuse/zj4Jq/

这是一个工作示例：http：//jsfiddle.net/BinaryMuse/zj4Jq/

By leveraging $injector.invoke inside of your dialogProvider.register function, you can provide the ability to use a key like controller in the data your configFn returns. Since directive works a lot like this already, you may gain a lot from checking out the AngularJS source.

通过利用dialogProvider.register函数中的$ injector.invoke，您可以在configFn返回的数据中使用类似控制器的键。由于指令已经很像这样，你可以通过检查AngularJS源获得很多。