Ability to add upload failed callback to options (#377)

Author: dazorni

spec/images.spec.js

@@ -463,4 +463,34 @@ describe('Images addon', function () {
             files: [{ type: 'image/jpeg', size: 1001 }]
         });
     });
+
+    it('calls callback function after failing upload', function (done) {
+        this.addon.options.fileUploadOptions.maxFileSize = 1000;
+        this.addon.options.uploadFailed = function () {
+            expect(true).toBe(true);
+            done();
+        };
+
+        this.$el.find('p').click();
+
+        this.addon.uploadAdd(null, {
+            files: [{type: 'image/jpeg', size: 1001}]
+        });
+    });
+
+    it('show alert if callback is no function', function (done) {
+        this.addon.options.fileUploadOptions.maxFileSize = 1000;
+        this.addon.options.uploadFailed = "string";
+
+        spyOn(window, 'alert').and.callFake(function (text) {
+            expect(text).not.toBe(null);
+            done();
+        });
+
+        this.$el.find('p').click();
+
+        this.addon.uploadAdd(null, {
+            files: [{type: 'image/jpeg', size: 1001}]
+        });
+    });
 });

src/js/images.js

@@ -73,6 +73,7 @@
                 acceptFileTypesError: 'This file is not in a supported format: ',
                 maxFileSizeError: 'This file is too big: '
             }
+            // uploadError: function($el, data) {}
             // uploadCompleted: function ($el, data) {}
         };
 
@@ -249,7 +250,14 @@
             uploadErrors.push(this.options.messages.maxFileSizeError + file.name);
         }
         if (uploadErrors.length > 0) {
+            if (this.options.uploadFailed && typeof this.options.uploadFailed === "function") {
+                this.options.uploadFailed(uploadErrors, data);
+
+                return;
+            }
+
             alert(uploadErrors.join("\n"));
+
             return;
         }