How can a parent directive be updated in a decoupled manner from a dynamically generated view/controller that acts as a child of the parent?

I am working on an app that includes window instances. These instances can have multiple windows and each window can contain multiple views. The views are considered as children of each window instance. Both the windows and view creator are directives with an isolated scope. My goal is to have the views loosely connected to their parent windows without having to use something like $scope.$parent.

module.directive('window', function() {
    return {
        restrict: 'E',
        replace: true,
        templateUrl: 'windowTemplate.html',
        controller: 'windowController',
        scope: {
            config: '='
        },
        link: function(scope, element, attrs) {

        }
    };
});

module.directive('view', function($compile, $http) {
    return {
        restrict: 'E',
        replace: true,
        scope: {},
        link: function(scope, element, attrs) { 
            attrs.$observe('templateUrl', function (url) {
                $http.get(url).then(function (response) {
                    var tpl = $compile(response.data)(scope);
                    element.append(tpl);
                });
            });
        }
    };
});

Initially, I considered using a service for this purpose, but since services are singletons, it would cause the view to update all windows simultaneously.

Is there a method to accomplish what I am attempting to do?

See the Plunker for an example.

Answer №1

If you're looking to facilitate data and function sharing across various components in Angular, I recommend exploring the concept of services. Check out this valuable resource for more insights: https://docs.angularjs.org/guide/services

Services play a crucial role in enabling seamless communication between different sections of your application.

Answer №2

In my response here, I aimed to illustrate that although services are singletons, there are effective methods for managing multiple, distinct object instances.

The crux of your challenge seems to revolve around establishing a connection between a "window" and a "view". It appears you are hesitant to employ prototypical inheritance out of concern for overly tight coupling between the elements. Yet, some level of linkage between view and window is necessary; otherwise, they exist as separate entities with no correlation.

My suggestion would be to develop a service that acts as a factory for creating window and view objects (similar to my response to your previous query). By utilizing directives with isolate scope, you can specifically share only the window scope object with child views. This can be achieved by including the following snippet in your window directive template:

<view template-url="{{view.templateUrl}}" window="window" ng-show="view.active"></view>

If you adjust the scope: {...} setting in all child view directives accordingly, they will exclusively access the parent's scope variable for the window. It might even render the service redundant in this context, as the window and view directives could possibly encapsulate adequately on their own. The necessity of the service could hinge on external factors beyond the information provided for discussion.

If you identify any concerns with exclusively sharing that scope variable, could you furnish additional details on your reservations in an updated question?

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