Refactor cros library code into central location and have the UI elements obs...

chrome/browser/chromeos/cros_network_library.h

+// Copyright (c) 2009 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_
+#define CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_
+
+#include <string>
+#include <vector>
+
+#include "base/observer_list.h"
+#include "base/singleton.h"
+#include "base/string16.h"
+#include "third_party/cros/chromeos_network.h"
+
+struct WifiNetwork {
+  WifiNetwork() : encrypted(false), encryption(chromeos::NONE), strength(0) {}
+  WifiNetwork(const std::string& ssid, bool encrypted,
+              chromeos::EncryptionType encryption, int strength)
+      : ssid(ssid),
+        encrypted(encrypted),
+        encryption(encryption),
+        strength(strength) { }
+
+  // WifiNetworks are sorted by ssids.
+  bool operator< (const WifiNetwork& other) const {
+    return ssid < other.ssid;
+  }
+
+  std::string ssid;
+  bool encrypted;
+  chromeos::EncryptionType encryption;
+  int strength;
+};
+typedef std::vector<WifiNetwork> WifiNetworkVector;
+
+// This class handles the interaction with the ChromeOS network library APIs.
+// Classes can add themselves as observers. Users can get an instance of this
+// library class like this: CrosNetworkLibrary::Get()
+class CrosNetworkLibrary {
+ public:
+  class Observer {
+   public:
+    virtual void NetworkChanged(CrosNetworkLibrary* obj) = 0;
+  };
+
+  // This gets the singleton CrosNetworkLibrary
+  static CrosNetworkLibrary* Get();
+
+  // Returns true if the ChromeOS library was loaded.
+  static bool loaded();
+
+  void AddObserver(Observer* observer);
+  void RemoveObserver(Observer* observer);
+
+  bool ethernet_connected() const { return ethernet_connected_; }
+  const std::string& wifi_ssid() const { return wifi_ssid_; }
+  bool wifi_connecting() const { return wifi_connecting_; }
+  int wifi_strength() const { return wifi_strength_; }
+
+  // Returns the current list of wifi networks.
+  WifiNetworkVector GetWifiNetworks();
+
+  // Connect to the specified wireless network with password.
+  void ConnectToWifiNetwork(WifiNetwork network, const string16& password);
+
+ private:
+  friend struct DefaultSingletonTraits<CrosNetworkLibrary>;
+
+  CrosNetworkLibrary();
+  ~CrosNetworkLibrary() {}
+
+  // This method is called when there's a change in network status.
+  // This will notify all the Observers.
+  static void NetworkStatusChangedHandler(void* object,
+      const chromeos::ServiceInfo& service);
+
+  // Parse a ServiceInfo objects and update our status.
+  void ParseNetworkServiceInfo(const chromeos::ServiceInfo& service);
+
+  // Initialize the network status on startup.
+  void InitNetworkStatus();
+
+  ObserverList<Observer> observers_;
+
+  // Whether or not we are connected to the ethernet line.
+  bool ethernet_connected_;
+
+  // The current connected (or connecting) wireless ssid. Empty if none.
+  std::string wifi_ssid_;
+
+  // Whether or not we are connecting right now.
+  bool wifi_connecting_;
+
+  // The strength of the currently connected ssid.
+  int wifi_strength_;
+
+  DISALLOW_COPY_AND_ASSIGN(CrosNetworkLibrary);
+};
+
+#endif  // CHROME_BROWSER_CHROMEOS_CROS_NETWORK_LIBRARY_H_