1 files changed, 124 insertions, 0 deletions
diff --git a/www/lib/ion-image-lazy-load/ionic-image-lazy-load.js b/www/lib/ion-image-lazy-load/ionic-image-lazy-load.js
new file mode 100644
index 00000000..da9ff94d
--- /dev/null
+++ b/www/lib/ion-image-lazy-load/ionic-image-lazy-load.js
@@ -0,0 +1,124 @@
+/**
+ * Created by PAVEI on 30/09/2014.
+ * Updated by Ross Martin on 12/05/2014
+ * Updated by Davide Pastore on 04/14/2015
+ * Updated by Michel Vidailhet on 05/12/2015
+ */
+
+angular.module('ionicLazyLoad', []);
+
+angular.module('ionicLazyLoad')
+
+.directive('lazyScroll', ['$rootScope', '$timeout',
+    function($rootScope, $timeout) {
+        return {
+            restrict: 'A',
+            link: function ($scope, $element) {
+
+                var scrollTimeoutId = 0;
+
+                $scope.invoke = function () {
+                    $rootScope.$broadcast('lazyScrollEvent');
+                };
+
+                $element.bind('scroll', function () {
+
+                    $timeout.cancel(scrollTimeoutId);
+
+                    // wait and then invoke listeners (simulates stop event)
+                    scrollTimeoutId = $timeout($scope.invoke, 0);
+
+                });
+
+
+            }
+        };
+}])
+
+.directive('imageLazySrc', ['$document', '$timeout', '$ionicScrollDelegate', '$compile',
+    function ($document, $timeout, $ionicScrollDelegate, $compile) {
+        return {
+            restrict: 'A',
+            scope: {
+                lazyScrollResize: "@lazyScrollResize",
+                imageLazyBackgroundImage: "@imageLazyBackgroundImage"
+            },
+            link: function ($scope, $element, $attributes) {
+                if (!$attributes.imageLazyDistanceFromBottomToLoad) {
+                    $attributes.imageLazyDistanceFromBottomToLoad = 0;
+                }
+                if (!$attributes.imageLazyDistanceFromRightToLoad) {
+                    $attributes.imageLazyDistanceFromRightToLoad = 0;
+                }
+
+                if ($attributes.imageLazyLoader) {
+                    var loader = $compile('<div class="image-loader-container"><ion-spinner class="image-loader" icon="' + $attributes.imageLazyLoader + '"></ion-spinner></div>')($scope);
+                    $element.after(loader);
+                }
+
+                var deregistration = $scope.$on('lazyScrollEvent', function () {
+                        //console.log('scroll');
+                        if (isInView()) {
+                            loadImage();
+                            deregistration();
+                        }
+                    }
+                );
+
+                function loadImage() {
+                    //Bind "load" event
+                    $element.bind("load", function (e) {
+                        if ($attributes.imageLazyLoader) {
+                            loader.remove();
+                        }
+                        if ($scope.lazyScrollResize == "true") {
+                            //Call the resize to recalculate the size of the screen
+                            $ionicScrollDelegate.resize();
+                        }
+                    });
+
+                    if ($scope.imageLazyBackgroundImage == "true") {
+                        var bgImg = new Image();
+                        bgImg.onload = function () {
+                            if ($attributes.imageLazyLoader) {
+                                loader.remove();
+                            }
+                            $element[0].style.backgroundImage = 'url(' + $attributes.imageLazySrc + ')'; // set style attribute on element (it will load image)
+                            if ($scope.lazyScrollResize == "true") {
+                                //Call the resize to recalculate the size of the screen
+                                $ionicScrollDelegate.resize();
+                            }
+                        };
+                        bgImg.src = $attributes.imageLazySrc;
+                    } else {
+                        $element[0].src = $attributes.imageLazySrc; // set src attribute on element (it will load image)
+                    }
+                }
+
+                function isInView() {
+                    var clientHeight = $document[0].documentElement.clientHeight;
+                    var clientWidth = $document[0].documentElement.clientWidth;
+                    var imageRect = $element[0].getBoundingClientRect();
+                    return (imageRect.top >= 0 && imageRect.top <= clientHeight + parseInt($attributes.imageLazyDistanceFromBottomToLoad))
+                        && (imageRect.left >= 0 && imageRect.left <= clientWidth + parseInt($attributes.imageLazyDistanceFromRightToLoad));
+                }
+
+                // bind listener
+                // listenerRemover = scrollAndResizeListener.bindListener(isInView);
+
+                // unbind event listeners if element was destroyed
+                // it happens when you change view, etc
+                $element.on('$destroy', function () {
+                    deregistration();
+                });
+
+                // explicitly call scroll listener (because, some images are in viewport already and we haven't scrolled yet)
+                $timeout(function () {
+                    if (isInView()) {
+                        loadImage();
+                        deregistration();
+                    }
+                }, 500);
+            }
+        };
+    }]);