Refactoring oauth token handling functions and dependants

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/modules/backend-service-invoker.js

@@ -41,7 +41,7 @@ var backendServiceInvoker = function () {
      * If the token pair s not set in the session this will send a redirect to the login page.
      */
     privateMethods.getAccessToken = function () {
-        var tokenPair = session.get(constants["ACCESS_TOKEN_PAIR_IDENTIFIER"]);
+        var tokenPair = parse(session.get(constants["ACCESS_TOKEN_PAIR_IDENTIFIER"]));
         if (tokenPair) {
             return tokenPair.accessToken;
         } else {

components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/modules/login.js

@@ -23,15 +23,12 @@ var onFail;
     var log = new Log("/app/modules/login.js");
     var constants = require("/app/modules/constants.js");
     onSuccess = function (context) {
-        var properties;
         var utility = require("/app/modules/utility.js").utility;
         var apiWrapperUtil = require("/app/modules/api-wrapper-util.js").apiWrapperUtil;
         if (context.input.samlToken) {
-            properties = {samlToken: context.input.samlToken};
-            apiWrapperUtil.setupAccessTokenPair(constants.GRANT_TYPE_SAML, properties);
+            apiWrapperUtil.setupAccessTokenPairBySamlGrantType(context.input.username, context.input.samlToken);
         } else {
-            properties = {username: context.input.username, password: context.input.password};
-            apiWrapperUtil.setupAccessTokenPair(constants.GRANT_TYPE_PASSWORD, properties);
+            apiWrapperUtil.setupAccessTokenPairByPasswordGrantType(context.input.username, context.input.password);
         }
         var devicemgtProps = require("/app/conf/reader/main.js")["conf"];
         var carbonServer = require("carbon").server;