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// 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.

#include "chrome/browser/chromeos/status/network_dropdown_button.h"

#include "app/l10n_util.h"
#include "app/resource_bundle.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
#include "chrome/browser/chromeos/options/network_config_view.h"
#include "chrome/browser/chromeos/status/status_area_host.h"
#include "gfx/canvas_skia.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "views/window/window.h"

namespace chromeos {

////////////////////////////////////////////////////////////////////////////////
// NetworkDropdownButton

// static
const int NetworkDropdownButton::kThrobDuration = 1000;

NetworkDropdownButton::NetworkDropdownButton(bool browser_mode,
                                             gfx::NativeWindow parent_window)
    : MenuButton(NULL,
                 l10n_util::GetString(IDS_STATUSBAR_NO_NETWORKS_MESSAGE),
                 this,
                 true),
      browser_mode_(browser_mode),
      ALLOW_THIS_IN_INITIALIZER_LIST(animation_connecting_(this)),
      parent_window_(parent_window) {
  animation_connecting_.SetThrobDuration(kThrobDuration);
  animation_connecting_.SetTweenType(Tween::LINEAR);
  NetworkChanged(CrosLibrary::Get()->GetNetworkLibrary());
  CrosLibrary::Get()->GetNetworkLibrary()->AddObserver(this);
}

NetworkDropdownButton::~NetworkDropdownButton() {
  CrosLibrary::Get()->GetNetworkLibrary()->RemoveObserver(this);
}

////////////////////////////////////////////////////////////////////////////////
// NetworkMenuButton, AnimationDelegate implementation:

void NetworkDropdownButton::AnimationProgressed(const Animation* animation) {
  if (animation == &animation_connecting_) {
    // Figure out which image to draw. We want a value between 0-100.
    // 0 represents no signal and 100 represents full signal strength.
    int value = static_cast<int>(animation_connecting_.GetCurrentValue()*100.0);
    if (value < 0)
      value = 0;
    else if (value > 100)
      value = 100;
    SetIcon(IconForNetworkStrength(value, true));
    SchedulePaint();
  } else {
    MenuButton::AnimationProgressed(animation);
  }
}

void NetworkDropdownButton::Refresh() {
  NetworkChanged(CrosLibrary::Get()->GetNetworkLibrary());
}

////////////////////////////////////////////////////////////////////////////////
// NetworkDropdownButton, NetworkLibrary::Observer implementation:

void NetworkDropdownButton::NetworkChanged(NetworkLibrary* cros) {
  // Show network that we will actually use. It could be another network than
  // user selected. For example user selected WiFi network but we have Ethernet
  // connection and Chrome OS device will actually use Ethernet.

  // This gets called on initialization, so any changes should be reflected
  // in CrosMock::SetNetworkLibraryStatusAreaExpectations().

  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
  if (CrosLibrary::Get()->EnsureLoaded()) {
    // Always show the higher priority connection first. Ethernet then wifi.
    if (cros->ethernet_connected()) {
      animation_connecting_.Stop();
      SetIcon(*rb.GetBitmapNamed(IDR_STATUSBAR_WIRED));
      SetText(l10n_util::GetString(IDS_STATUSBAR_NETWORK_DEVICE_ETHERNET));
    } else if (cros->wifi_connected()) {
      animation_connecting_.Stop();
      SetIcon(IconForNetworkStrength(
          cros->wifi_network().strength(), true));
      SetText(ASCIIToWide(cros->wifi_network().name()));
    } else if (cros->cellular_connected()) {
      animation_connecting_.Stop();
      SetIcon(IconForNetworkStrength(
          cros->cellular_network().strength(), false));
      SetText(ASCIIToWide(cros->cellular_network().name()));
    } else if (cros->wifi_connecting() || cros->cellular_connecting()) {
      if (!animation_connecting_.is_animating()) {
        animation_connecting_.Reset();
        animation_connecting_.StartThrobbing(-1);
        SetIcon(*rb.GetBitmapNamed(IDR_STATUSBAR_NETWORK_BARS1_BLACK));
      }

      if (cros->wifi_connecting())
        SetText(ASCIIToWide(cros->wifi_network().name()));
      else if (cros->cellular_connecting())
        SetText(ASCIIToWide(cros->cellular_network().name()));
    }

    if (!cros->Connected() && !cros->Connecting()) {
      animation_connecting_.Stop();
      SetIcon(SkBitmap());
      SetText(l10n_util::GetString(IDS_NETWORK_SELECTION_NONE));
    }
  } else {
    animation_connecting_.Stop();
    SetIcon(SkBitmap());
    SetText(l10n_util::GetString(IDS_STATUSBAR_NO_NETWORKS_MESSAGE));
  }

  SchedulePaint();
}

}  // namespace chromeos