One efficient way to bind the context of the controller directly to the service is by avoiding excessive use of $scope, minimizing property definitions in directive's isolate scopes, and eliminating the need for interaction with $rootScope. By leveraging this approach, you can ensure that everything requiring binding is linked to the internal API of your global service.
This strategy proves valuable for applications necessitating extensive data sharing and awareness among numerous components. It was successfully implemented in a video player project where various application parts needed to exchange information and access each other’s status, such as the number of video players on-screen, their current time, duration, and source.
Nevertheless, this pattern may not be ideal for constructing fully reusable components since it mandates reliance on a specific service within the directive. Nonetheless, consolidating all necessary properties for your application components into a single value component enables convenient definition of your internal API.
Regarding performance implications of sharing substantial objects via dirty checking, potential burdens should be considered.
directive
function() {
return {
//if you want the service to hold all the data the directive needs
//you don't need to define any properties here
scope: {},
controller: "SomeCtrl"
};
}
directive's controller
angular
.module("app")
.controller("SomeCtrl", ["globalService", function(globalService) {
var vm = this;
vm.globalService = globalService;
}]);
html
<div>{{vm.globalService.someProperty}}</div>
in some deeply nested template url
<!-- another tradeoff is the long naming that can result -->
<div
ng-click="panel.state = !panel.state;"
ng-repeat="panel in vm.globalService.dashboard.sidebar.panelConfig">{{panel.display}}</div>
constants
angular
.module("app")
.value("internalAPI", {
someInitializedThing: true,
someConfig: [
{ state: true, display: "foobar" },
{ state: false, display: "starts off false" }
],
dashboard: {
sidebar: {
panelConfig: [
{ display: "one panel", state: true },
{ display: "special panel", state: false }
]
}
}
});
let your service register the API you've defined
angular
.module("app")
.service("globalService", ["internalAPI", function(API) {
var tmp = {};
for (var p in API)
tmp[p] = API[p];
return tmp;
}])
//now someplace else, globalService.someNavBar = true