Utilize Angular functions in every controller in your application

Question

Utilize Angular functions in every controller in your application

Currently, I have important functionality code within app.run(function... in Angular:

app.run(function($rootScope, $window) {

  // Obtain window dimensions
  $window.width = angular.element($window).width();
  $window.height = angular.element($window).height();

  // Initialize variables
  var scrollTimer = false;

  // Keydown event listeners
  document.onkeydown = function(e){

    // Scroll down keys
    if (e.keyCode == 32 || e.keyCode == 40) {
      scroll(-1);
      e.preventDefault(); }

    // Scroll up keys
    if (e.keyCode == 38) {
      scroll(1);
      e.preventDefault(); }
  }

  // Scroll function
  function scroll(delta){

    // Check scroll timer
    if (scrollTimer) return;

    // New scroll pane logic
    if (delta < 0 && $rootScope.pane.count < $rootScope.pane.max) $rootScope.pane.count += 1;
    else if (delta > 0 && $rootScope.pane.count > 0) $rootScope.pane.count -= 1;
    else return;

    // Apply current pane
    $rootScope.$apply();

    // Animate scroll movement
    var scrollAmount = $rootScope.pane.count * $window.height + "px";
    $("html, body").animate({scrollTop: scrollAmount}, 600, "swing");

    // Reset scroll timer
    scrollTimer = true;
    setTimeout(function(){ scrollTimer = false; }, 1500);
  }

});

Now, there is a controller (and potentially others) where the goal is to use the scroll() function. For example:

app.controller("AsideCtrl", function($rootScope, $scope){ 

  // Button scrolling functionality
  $scope.scrollTo = function(index){
    index = index + 1;  
    scroll(index);    
  }

});

It's clear that this setup doesn't work due to $scope. Is there a simple way to enable this?

javascript angularjs scope

Answer 1

Answer №1

To implement scrolling functionality in Angular, you can create a custom provider. Check out the documentation here for more information on angular providers.

Here's an example of how you can use a provider to handle scrolling: http://jsfiddle.net/7xvzm7b7/

Define your angular module:

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

// Define a custom scroll service using the provider pattern
myApp.service('$scrollService', function() {
    this.scroll = function(delta){
        // Check if scroll timer is already running
        if (scrollTimer) return;
        
        // Update scroll pane based on delta
        if (delta < 0 && $rootScope.pane.count < $rootScope.pane.max) $rootScope.pane.count += 1;
        else if (delta > 0 && $rootScope.pane.count > 0) $rootScope.pane.count -= 1;
        else return;
        
        // Apply changes to current pane
        $rootScope.$apply();
        
        // Animate scrolling behavior
        var scroll = $rootScope.pane.count * $window.height + "px";
        $("html, body").animate({scrollTop: scroll}, 600, "swing");
        
        // Set scroll timer to prevent rapid scrolling
        scrollTimer = true;
        setTimeout(function(){ scrollTimer = false; }, 1500);
    }
    
    return this;
});
  
// Controller code that uses the scroll service
myApp.controller('ctrl', ['$scope', '$scrollService', function($scope, $scrollService) {
    $scrollService.scroll();
}]);

Answer 2

To implement scrolling functionality in Angular, you can create a custom provider. Check out the documentation here for more information on angular providers.

Here's an example of how you can use a provider to handle scrolling: http://jsfiddle.net/7xvzm7b7/

Define your angular module:

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

// Define a custom scroll service using the provider pattern
myApp.service('$scrollService', function() {
    this.scroll = function(delta){
        // Check if scroll timer is already running
        if (scrollTimer) return;
        
        // Update scroll pane based on delta
        if (delta < 0 && $rootScope.pane.count < $rootScope.pane.max) $rootScope.pane.count += 1;
        else if (delta > 0 && $rootScope.pane.count > 0) $rootScope.pane.count -= 1;
        else return;
        
        // Apply changes to current pane
        $rootScope.$apply();
        
        // Animate scrolling behavior
        var scroll = $rootScope.pane.count * $window.height + "px";
        $("html, body").animate({scrollTop: scroll}, 600, "swing");
        
        // Set scroll timer to prevent rapid scrolling
        scrollTimer = true;
        setTimeout(function(){ scrollTimer = false; }, 1500);
    }
    
    return this;
});
  
// Controller code that uses the scroll service
myApp.controller('ctrl', ['$scope', '$scrollService', function($scope, $scrollService) {
    $scrollService.scroll();
}]);

Answer 3

Answer №2

Create a service function and inject it into all the controllers where you wish to utilize it, without needing to involve rootscope.

Here is a simple example of using a service: http://jsfiddle.net/clto/HB7LU/8220/

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

myApp.factory('myService', ['$http', function($http){
  var myService = {};
  myService.doStuff = function(){
    return "Hello from service";
    };

  return myService;

}]);

//Inject myService in the controller
myApp.controller('MyCtrl1',['$scope','myService',
  function ($scope,myService) {
      $scope.msg = "Hello from MyCtrl1";

      $scope.foo = function(){
          $scope.msg = myService.doStuff();
      }
  }]);

myApp.controller('MyCtrl2',['$scope','myService',
  function ($scope,myService) {
      $scope.msg = "Hello from MyCtrl2";

      $scope.foo = function(){
          $scope.msg = myService.doStuff();
      }
  }])

html:

<div ng-controller="MyCtrl1">

    <button ng-click="foo()">Click</button>
        {{msg}}

</div>

<div ng-controller="MyCtrl2">

    <button ng-click="foo()">Click</button>
        {{msg}}

</div>

Answer 4

Create a service function and inject it into all the controllers where you wish to utilize it, without needing to involve rootscope.

Here is a simple example of using a service: http://jsfiddle.net/clto/HB7LU/8220/

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

myApp.factory('myService', ['$http', function($http){
  var myService = {};
  myService.doStuff = function(){
    return "Hello from service";
    };

  return myService;

}]);

//Inject myService in the controller
myApp.controller('MyCtrl1',['$scope','myService',
  function ($scope,myService) {
      $scope.msg = "Hello from MyCtrl1";

      $scope.foo = function(){
          $scope.msg = myService.doStuff();
      }
  }]);

myApp.controller('MyCtrl2',['$scope','myService',
  function ($scope,myService) {
      $scope.msg = "Hello from MyCtrl2";

      $scope.foo = function(){
          $scope.msg = myService.doStuff();
      }
  }])

html:

<div ng-controller="MyCtrl1">

    <button ng-click="foo()">Click</button>
        {{msg}}

</div>

<div ng-controller="MyCtrl2">

    <button ng-click="foo()">Click</button>
        {{msg}}

</div>

Answer 5

Answer №3

To utilize the $rootScope, simply include this line after defining the function: scroll(delta): $rootScope.scroll = scroll;

Then, when you want to invoke it, use $rootScope.scroll instead.

Answer 6

To utilize the $rootScope, simply include this line after defining the function: scroll(delta): $rootScope.scroll = scroll;

Then, when you want to invoke it, use $rootScope.scroll instead.

Utilize Angular functions in every controller in your application

Answer №1

Answer №2

Answer №3

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