Don't allow connection to networks that are not connected....

chrome/browser/resources/options/chromeos_internet_network_element.js

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('options.internet', function() {
   /**
    * Creates a new network list div.
    * @param {Object=} opt_propertyBag Optional properties.
    * @constructor
    * @extends {HTMLDivElement}
@@ skipping 39 matching lines @@
         if (!(el.buttonType && el.networkType && el.servicePath)) {
           if (el.buttonType) {
             return;
           }
           // If click is on a network item or its label, walk up the DOM tree
           // to find the network item.
           var item = el;
           while (item && !item.data) {
             item = item.parentNode;
           }
-          if (item.connecting)
+          if (item.connecting || !item.connectable)
             return;
 
           if (item) {
             var data = item.data;
             // Don't try to connect to Ethernet or unactivated Cellular.
             if (data && (data.networkType == 1 ||
                         (data.networkType == 5 && data.activation_state != 1)))
               return;
             for (var i = 0; i < this.childNodes.length; i++) {
               if (this.childNodes[i] != item)
@@ skipping 28 matching lines @@
     el.data = {
       servicePath: network[0],
       networkName: network[1],
       networkStatus: network[2],
       networkType: network[3],
       connected: network[4],
       connecting: network[5],
       iconURL: network[6],
       remembered: network[7],
       activation_state: network[8],
-      restricted: network[9]
+      restricted: network[9],
+      connectable: network[10]
     };
     NetworkItem.decorate(el);
     return el;
   }
 
 
   /**
    * Minimum length for wireless network password.
    * @type {number}
    */
@@ skipping 21 matching lines @@
     el.decorate();
   };
 
   NetworkItem.prototype = {
     __proto__: HTMLDivElement.prototype,
 
     /** @inheritDoc */
     decorate: function() {
       this.className = 'network-item';
       this.connected = this.data.connected;
+      this.connectable = this.data.connectable;
       this.other = this.data.servicePath == '?';
       this.id = this.data.servicePath;
       // textDiv holds icon, name and status text.
       var textDiv = this.ownerDocument.createElement('div');
       textDiv.className = 'network-item-text';
       if (this.data.iconURL) {
         textDiv.style.backgroundImage = url(this.data.iconURL);
       }
 
       var nameEl = this.ownerDocument.createElement('div');
@@ skipping 303 matching lines @@
    */
   cr.defineProperty(NetworkItem, 'connecting', cr.PropertyKind.BOOL_ATTR);
 
   /**
    * Whether the underlying network is an other network for adding networks.
    * Only used for display purpose.
    * @type {boolean}
    */
   cr.defineProperty(NetworkItem, 'other', cr.PropertyKind.BOOL_ATTR);
 
+  /**
+   * Whether the underlying network is connectable.
+   * @type {boolean}
+   */
+  cr.defineProperty(NetworkItem, 'connectable', cr.PropertyKind.BOOL_ATTR);
+
   return {
     NetworkElement: NetworkElement
   };
 });