Added Map Dialog
Added Map Background
Prevent click on node drag event

Change-Id: Ibb13085e3aa51eae49a2017251486f00d52f6265
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Dialog.js b/web/gui/src/main/webapp/app/view/topo2/topo2Dialog.js
new file mode 100644
index 0000000..13da1a8
--- /dev/null
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Dialog.js
@@ -0,0 +1,46 @@
+/*
+* Copyright 2016-present Open Networking Laboratory
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+/*
+ ONOS GUI -- Topology Dialog Module.
+ Creates a dialog box for the topology view.
+ */
+
+(function () {
+    'use strict';
+
+    // constants
+    var idDialog = 'topo-p-dialog',
+        opts = {
+            cssCls: 'topo-p'
+        };
+
+    // ==========================
+
+    angular.module('ovTopo2')
+    .factory('Topo2DialogService',
+        ['DialogService',
+
+        function (ds) {
+            return {
+                openDialog: function () {
+                    return ds.openDialog(idDialog, opts);
+                },
+                closeDialog: ds.closeDialog,
+                createDiv: ds.createDiv
+            };
+        }]);
+})();