Controller mediator example

gistfile1.js

angular.module("FooBar").
  service("ControllerMediator", function() {
    var methodCache = {};

    return {
      registerMediator: function(name) {
        methodCache[name] = { conditions: [] };
        
        return this.run(name);
      },
      
      registerCondition: function(name, fn) {
        methodCache[name].conditions.push(fn);
      },
      
      registerCallback: function(name, fn) {
        methodCache[name].callback = fn;
      },
      
      run: function(name) {
        var conditions = methodCache[name].conditions;
        var result = true;
        
        for(var i = 0, l = conditions.length; i < l; i++) {
          result = result && conditions[i]();
        }
        
        if (result) {
          methodCache[name].callback();
        }
      }
    }
  }).
  controller("ParentController", function(ControllerMediator) {
    $scope.something = ControllerMediator.registerMediator("foobar");
  }).
  controller("ChildControllerOne", function(ControllerMediator) {
    ControllerMediator.registerCondition("foobar", function() {
      this.getResult() > 0 && this.isNotBlocking();
    })
  }).
  controller("ChildControllerOne", function(ControllerMediator) {
    ControllerMediator.registerCallback("foobar", function() {
      this.doSomeStuff();
    })
  });