app/assets/javascript/pageflow/linkmap_page/widgets/linkmap/remote_image.js in pageflow-linkmap-page-1.0.0 vs app/assets/javascript/pageflow/linkmap_page/widgets/linkmap/remote_image.js in pageflow-linkmap-page-1.1.0

@@ -1,38 +1,54 @@
-pageflow.linkmapPage.RemoteImage = function(url, image) {
-  this.width = function() {
-    return image.width;
-  };
+pageflow.linkmapPage.RemoteImage = (function() {
+  function RemoteImage(url, image) {
+    this.width = function() {
+      return image.width;
+    };
 
-  this.height = function() {
-    return image.height;
-  };
+    this.height = function() {
+      return image.height;
+    };
 
-  this.draw = function(canvas, options) {
-    options = options || {};
-    var context = canvas.getContext('2d');
+    this.draw = function(canvas, options) {
+      options = options || {};
+      var context = canvas.getContext('2d');
 
-    if (options.disableImageSmoothing) {
-      context.imageSmoothingEnabled = false;
-    }
+      if (options.disableImageSmoothing) {
+        context.imageSmoothingEnabled = false;
+      }
 
-    context.drawImage(image,
-                      0,
-                      0,
-                      canvas.width,
-                      canvas.height);
+      context.drawImage(image,
+                        0,
+                        0,
+                        canvas.width,
+                        canvas.height);
+    };
+  }
+
+  RemoteImage.load = function(url) {
+    return new $.Deferred(function(deferred) {
+      var image = new Image();
+
+      image.onload = onLoad;
+      image.onerror = onError;
+      image.crossOrigin = 'Anonymous';
+      image.src = url;
+
+      function onLoad() {
+        deferred.resolve(new pageflow.linkmapPage.RemoteImage(url, image));
+      }
+
+      function onError() {
+        deferred.reject(loadError(url));
+      }
+    }).promise();
   };
-};
 
-pageflow.linkmapPage.RemoteImage.load = function(url) {
-  return new $.Deferred(function(deferred) {
-    var image = new Image();
+  return RemoteImage;
 
-    image.onload = onLoad;
-    image.crossOrigin = 'Anonymous';
-    image.src = url;
+  function loadError(url) {
+    var error = new Error('Error while loading ' + url + '.');
+    error.i18nKey = 'pageflow.linkmap_page.errors.loading_remote_image_failed';
 
-    function onLoad() {
-      deferred.resolve(new pageflow.linkmapPage.RemoteImage(url, image));
-    }
-  }).promise();
-};
+    return error;
+  }
+}());
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