moved processRequestFailure and other multi-use methods into Helpers.js

DataCenter_Windows/WindowsDataCenter/WindowsDataCenter/www/Helpers.js

@@ -32,4 +32,57 @@
         }
         return url;
     };
+    self.goToMenuOption = function(page) {
+        location.hash = page;
+        console.log("goToMenuOption: " + page);
+    };
+    self.processRequestFailure = function(xmlHttpRequest, textStatus, errorThrown) {
+        if (xmlHttpRequest.readyState === 4) {
+            return {
+                errorCode: xmlHttpRequest.status,
+                errorMessage: xmlHttpRequest.statusText,
+                errorSource: ""
+            };
+        }
+        else if (xmlHttpRequest.readyState === 0) {
+            return {
+                errorCode: xmlHttpRequest.status,
+                errorMessage: "Network Error - Is the server available?",
+                errorSource: ""
+            };
+        }
+        else {
+            return {
+                errorCode: xmlHttpRequest.status,
+                errorMessage: "Unknown Error",
+                errorSource: ""
+            };
+        }
+    }
+    /**
+     * Function to redirect to a page in the sammy.js eco system.
+     * Relies on "pagedestination" tag in the html. This is a button click handler.
+     * @param {Object<unknown>} data - dunno?
+     * @param {Object<buttonhandle>} event - handle to the button that was clicked.
+     * @returns {nothing} - redirects to the url referenced by the pageDestination tag. 
+     */
+    self.getPageDestination = function(data, event) {
+        var target = null;
+        if (event.target) target = event.target;
+        else if (event.srcElement) target = event.srcElement;
+        var destination = "";
+        if (target != null) {
+            for (var i = 0; i < target.attributes.length; i++) {
+                if (target.attributes[i].nodeName === "pagedestination") {
+                    destination = target.attributes[i].value;
+                    break;
+                }
+            }
+            if (destination !== "") {
+                return destination;
+            }
+        } else {
+            console.log("target is null, going nowhere");
+        }
+    };
 };