rerender again if rerender change

demo/xmla_connection/wizard.js

@@ -365,6 +365,7 @@
         action = arr[0].action,
         used_diemensions,
         url = arr[0].ref,
+        allRerender,
         y;
 
       function rerender(sub_scope) {
@@ -379,6 +380,21 @@
           queue = RSVP.Queue();
         }
 
+        function rerender_once(connection_settings, sub_gadget) {
+          return sub_gadget.getContent()
+            .push(function (content) {
+              console.log(content);
+              return generateChoiceSchema(connection_settings, used_diemensions, content);
+            })
+            .push(function (schema) {
+              return gadget_settings.rerender({
+                scope: sub_scope,
+                schema: schema,
+                ignore_incorrect: true
+              });
+            });
+        }
+
         queue
           .push(function () {
             return g.getDeclaredGadget("olap_wizard");
@@ -388,19 +404,24 @@
             return RSVP.all([
               getCurrentConnectionSettings(gadget),
               gadget.getSubGadget(sub_scope)
-                .push(function (z) {
-                  return z.getContent();
-                })
             ]);
           })
           .push(function (arr) {
-            return generateChoiceSchema(arr[0], used_diemensions, arr[1]);
+            var connection_settings = arr[0],
+              sub_gadget = arr[1];
+            return rerender_once(connection_settings, sub_gadget)
+              .push(function (changed) {
+                if (changed.length > 0) {
+                  if (changed.indexOf('/dimension') >= 0) {
+                    return allRerender();
+                  }
+                  return rerender_once(connection_settings, sub_gadget);
+                }
               })
-          .push(function (schema) {
-            return gadget_settings.rerender({
-              scope: sub_scope,
-              schema: schema,
-              ignore_incorrect: true
+              .push(function (changed) {
+                if (changed.length > 0) {
+                  return rerender_once(connection_settings, sub_gadget);
+                }
               });
           })
           .push(function () {
@@ -409,15 +430,18 @@
           });
       }
 
-      function allRerender() {
+      allRerender = function () {
         return get_used_dimensions(g)
           .push(function (v) {
             used_diemensions = v;
             return RSVP.all(g.props.choices.map(function (q) {
               return rerender(q);
             }));
+          })
+          .push(function () {
+            return [];
           });
-      }
+      };
 
       if ("urn:jio:remote_connections.json" === url) {
         return allRerender();