angular-images-loaded.js

(function () {
  'use strict';
  angular.module('hj.imagesLoaded', [])
    .directive('imagesLoaded', function () {
      return {
        restrict: 'AC',
        scope: {
          imagesLoaded: '=?',
          imagesLoadedOptions: '=?',
          imagesLoadedEvents: '=?',
          imagesLoadedClass: '=?',
          imagesLoadedWatch: '=?',
          imagesLoadedAlways: '&?',
          imagesLoadedDone: '&?',
          imagesLoadedFail: '&?',
          imagesLoadedSelector: '@?'
        },
        bindToController: true,
        controllerAs: 'vm',
        controller: ['$scope', '$element', '$attrs', '$timeout', function ($scope, $element, $attrs, $timeout) {
          var vm = this;

          vm.$onInit = function () {
            var eventNames = ['always', 'done', 'fail', 'progress'];
            var events = vm.imagesLoaded || vm.imagesLoadedEvents;
            var options = vm.imagesLoadedOptions || {};
            var className = vm.imagesLoadedClass || 'images-loaded';
            var classUsed = $element.hasClass(className);
            var selector = vm.imagesLoadedSelector;

            $element.addClass(className);

            var init = function () {
              $scope.$emit('imagesLoaded:started', $element);

              if (classUsed) {
                $element.addClass(className);
              }

              var elements = selector ? $element.find(selector) : $element[0];

              var imgLoad = imagesLoaded(elements, options, function () {
                $scope.$emit('imagesLoaded:loaded', $element);

                $element.removeClass(className);

                $scope.$apply(function () {
                  $scope.$parent.$imagesLoaded = true;
                });
              });

              eventNames.forEach(function (eventName) {
                imgLoad.on(eventName, function () {
                  var callbackArguments = [this, $element].concat(Array.prototype.slice.call(arguments));
                  if (events && typeof events[eventName] === 'function') {
                    events[eventName].apply(this, callbackArguments);
                  }

                  if (typeof vm['imagesLoaded' + (eventName[0].toUpperCase() + eventName.slice(1))] === 'function') {
                    vm['imagesLoaded' + (eventName[0].toUpperCase() + eventName.slice(1))].apply(this, callbackArguments);
                  }
                });
              });
            };

            if (vm.imagesLoadedWatch) {
              $scope.$watch('vm.imagesLoadedWatch', function () {
                init();
              });
            } else {
              $timeout(init);
            }
          };
        }]
      };
    }
  );

  angular.module('angular-images-loaded', ['hj.imagesLoaded']);
})();