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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "ash/system/chromeos/network/tray_network_state_observer.h"
      6 
      7 #include <set>
      8 #include <string>
      9 
     10 #include "ash/system/chromeos/network/network_icon.h"
     11 #include "base/location.h"
     12 #include "chromeos/network/network_state.h"
     13 #include "chromeos/network/network_state_handler.h"
     14 #include "third_party/cros_system_api/dbus/service_constants.h"
     15 
     16 using chromeos::NetworkHandler;
     17 
     18 namespace ash {
     19 
     20 TrayNetworkStateObserver::TrayNetworkStateObserver(Delegate* delegate)
     21     : delegate_(delegate) {
     22   if (NetworkHandler::IsInitialized()) {
     23     NetworkHandler::Get()->network_state_handler()->AddObserver(
     24         this, FROM_HERE);
     25   }
     26 }
     27 
     28 TrayNetworkStateObserver::~TrayNetworkStateObserver() {
     29   if (NetworkHandler::IsInitialized()) {
     30     NetworkHandler::Get()->network_state_handler()->RemoveObserver(
     31         this, FROM_HERE);
     32   }
     33 }
     34 
     35 void TrayNetworkStateObserver::NetworkListChanged() {
     36   delegate_->NetworkStateChanged(true);
     37   network_icon::PurgeNetworkIconCache();
     38 }
     39 
     40 void TrayNetworkStateObserver::DeviceListChanged() {
     41   delegate_->NetworkStateChanged(false);
     42 }
     43 
     44 // Any change to the Default (primary connected) network, including Strength
     45 // changes, should trigger a NetworkStateChanged update.
     46 void TrayNetworkStateObserver::DefaultNetworkChanged(
     47     const chromeos::NetworkState* network) {
     48   delegate_->NetworkStateChanged(true);
     49 }
     50 
     51 // Any change to the Connection State should trigger a NetworkStateChanged
     52 // update. This is important when both a VPN and a physical network are
     53 // connected.
     54 void TrayNetworkStateObserver::NetworkConnectionStateChanged(
     55     const chromeos::NetworkState* network) {
     56   delegate_->NetworkStateChanged(true);
     57 }
     58 
     59 // This tracks Strength and other property changes for all networks. It will
     60 // be called in addition to NetworkConnectionStateChanged for connection state
     61 // changes.
     62 void TrayNetworkStateObserver::NetworkPropertiesUpdated(
     63     const chromeos::NetworkState* network) {
     64   if (network ==
     65       NetworkHandler::Get()->network_state_handler()->DefaultNetwork()) {
     66     // Trigger NetworkStateChanged in case the Strength property of the
     67     // Default network changed.
     68     delegate_->NetworkStateChanged(true);
     69   }
     70   delegate_->NetworkServiceChanged(network);
     71 }
     72 
     73 }  // namespace ash
     74