ash/system/chromeos/network/tray_network_state_observer.cc

   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/tray/system_tray.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 #include "ui/chromeos/network/network_icon.h"
  16 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
  17
  18 using chromeos::NetworkHandler;
  19
  20 namespace {
  21
  22 const int kUpdateFrequencyMs = 1000;
  23
  24 }  // namespace
  25
  26 namespace ash {
  27
  28 TrayNetworkStateObserver::TrayNetworkStateObserver(Delegate* delegate)
  29     : delegate_(delegate),
  30       purge_icons_(false),
  31       update_frequency_(kUpdateFrequencyMs) {
  32   if (ui::ScopedAnimationDurationScaleMode::duration_scale_mode() !=
  33       ui::ScopedAnimationDurationScaleMode::NORMAL_DURATION) {
  34     update_frequency_ = 0;  // Send updates immediately for tests.
  35   }
  36   if (NetworkHandler::IsInitialized()) {
  37     NetworkHandler::Get()->network_state_handler()->AddObserver(this,
  38                                                                 FROM_HERE);
  39   }
  40 }
  41
  42 TrayNetworkStateObserver::~TrayNetworkStateObserver() {
  43   if (NetworkHandler::IsInitialized()) {
  44     NetworkHandler::Get()->network_state_handler()->RemoveObserver(this,
  45                                                                    FROM_HERE);
  46   }
  47 }
  48
  49 void TrayNetworkStateObserver::NetworkListChanged() {
  50   purge_icons_ = true;
  51   SignalUpdate();
  52 }
  53
  54 void TrayNetworkStateObserver::DeviceListChanged() {
  55   SignalUpdate();
  56 }
  57
  58 // Any change to the Default (primary connected) network, including Strength
  59 // changes, should trigger a NetworkStateChanged update.
  60 void TrayNetworkStateObserver::DefaultNetworkChanged(
  61     const chromeos::NetworkState* network) {
  62   SignalUpdate();
  63 }
  64
  65 // Any change to the Connection State should trigger a NetworkStateChanged
  66 // update. This is important when both a VPN and a physical network are
  67 // connected.
  68 void TrayNetworkStateObserver::NetworkConnectionStateChanged(
  69     const chromeos::NetworkState* network) {
  70   SignalUpdate();
  71 }
  72
  73 // This tracks Strength and other property changes for all networks. It will
  74 // be called in addition to NetworkConnectionStateChanged for connection state
  75 // changes.
  76 void TrayNetworkStateObserver::NetworkPropertiesUpdated(
  77     const chromeos::NetworkState* network) {
  78   SignalUpdate();
  79 }
  80
  81 void TrayNetworkStateObserver::SignalUpdate() {
  82   if (timer_.IsRunning())
  83     return;
  84   timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(update_frequency_),
  85                this, &TrayNetworkStateObserver::SendNetworkStateChanged);
  86 }
  87
  88 void TrayNetworkStateObserver::SendNetworkStateChanged() {
  89   delegate_->NetworkStateChanged();
  90   if (purge_icons_) {
  91     ui::network_icon::PurgeNetworkIconCache();
  92     purge_icons_ = false;
  93   }
  94 }
  95
  96 }  // namespace ash