added check to make sure the space to be added does not already exist (duracloud#197)

Author: nwoodward

duradmin/src/main/webapp/jquery/dc/api/durastore-api.js

@@ -115,6 +115,27 @@ var dc;
 	 * @param Object callback The callback must implement success and failure methods. options begin method is supported.
 	 */
 	dc.store.AddSpace = function(space, publicFlag, callback){
+            // Check if space already exists
+            var exists = false;
+            dc.ajax({
+                url: "/duradmin/spaces/json",
+                data: "storeId=" + space.storeId,
+                cache: false,
+                async: false,
+                success: function (data) {
+                    $.each(data.spaces, function (index, current_space) {
+                        if (space.spaceId == current_space.spaceId) {
+                            exists = true;
+                        }
+                    });
+                },
+                failure: {},
+            });
+            if (exists) {
+                return callback.failure('The space already exists.');
+            }
+
+            // Add space
 		dc.ajax(
 			{
 				url: "/duradmin/spaces/space", 

duradmin/src/main/webapp/js/spaces-manager.js

@@ -906,7 +906,10 @@ $(function() {
               $("#spaces-list").selectablelist("setCurrentItemById", space.spaceId);
               that._spacesListPane.spaceslistpane("scrollToCurrentSpace");
             }
-
+          },
+          failure : function(message) {
+            dc.done();
+            alert("Error: " + message);
           },
         });
         this._addSpaceDialog.dialog("close");