chrome/browser/chromeos/login/screens/base_screen.cc

   1 // Copyright (c) 2011 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 "chrome/browser/chromeos/login/screens/base_screen.h"
   6
   7 #include "base/logging.h"
   8 #include "chrome/browser/chromeos/login/screens/base_screen_delegate.h"
   9 #include "chrome/browser/chromeos/login/screens/model_view_channel.h"
  10
  11 namespace chromeos {
  12
  13 BaseScreen::ContextEditor::ContextEditor(BaseScreen& screen)
  14     : screen_(screen), context_(screen.context_) {
  15 }
  16
  17 BaseScreen::ContextEditor::~ContextEditor() {
  18   screen_.CommitContextChanges();
  19 }
  20
  21 const BaseScreen::ContextEditor& BaseScreen::ContextEditor::SetBoolean(
  22     const KeyType& key,
  23     bool value) const {
  24   context_.SetBoolean(key, value);
  25   return *this;
  26 }
  27
  28 const BaseScreen::ContextEditor& BaseScreen::ContextEditor::SetInteger(
  29     const KeyType& key,
  30     int value) const {
  31   context_.SetInteger(key, value);
  32   return *this;
  33 }
  34
  35 const BaseScreen::ContextEditor& BaseScreen::ContextEditor::SetDouble(
  36     const KeyType& key,
  37     double value) const {
  38   context_.SetDouble(key, value);
  39   return *this;
  40 }
  41
  42 const BaseScreen::ContextEditor& BaseScreen::ContextEditor::SetString(
  43     const KeyType& key,
  44     const std::string& value) const {
  45   context_.SetString(key, value);
  46   return *this;
  47 }
  48
  49 const BaseScreen::ContextEditor& BaseScreen::ContextEditor::SetString(
  50     const KeyType& key,
  51     const base::string16& value) const {
  52   context_.SetString(key, value);
  53   return *this;
  54 }
  55
  56 const BaseScreen::ContextEditor& BaseScreen::ContextEditor::SetStringList(
  57     const KeyType& key,
  58     const StringList& value) const {
  59   context_.SetStringList(key, value);
  60   return *this;
  61 }
  62
  63 const BaseScreen::ContextEditor& BaseScreen::ContextEditor::SetString16List(
  64     const KeyType& key,
  65     const String16List& value) const {
  66   context_.SetString16List(key, value);
  67   return *this;
  68 }
  69
  70 BaseScreen::BaseScreen(BaseScreenDelegate* base_screen_delegate)
  71     : channel_(nullptr), base_screen_delegate_(base_screen_delegate) {
  72 }
  73
  74 BaseScreen::~BaseScreen() {
  75 }
  76
  77 void BaseScreen::Initialize(::login::ScreenContext* context) {
  78   if (context)
  79     context_.CopyFrom(*context);
  80 }
  81
  82 void BaseScreen::OnShow() {
  83 }
  84
  85 void BaseScreen::OnHide() {
  86 }
  87
  88 void BaseScreen::OnClose() {
  89 }
  90
  91 bool BaseScreen::IsStatusAreaDisplayed() {
  92   return true;
  93 }
  94
  95 bool BaseScreen::IsPermanent() {
  96   return false;
  97 }
  98
  99 std::string BaseScreen::GetID() const {
 100   // TODO (ygorshenin, crbug.com/433797): elimitate intermediate
 101   // GetName() ASAP.
 102   return GetName();
 103 }
 104
 105 void BaseScreen::CommitContextChanges() {
 106   if (!context_.HasChanges())
 107     return;
 108   if (!channel_) {
 109     LOG(ERROR) << "Model-view channel for " << GetID()
 110                << " is not ready, context changes are not sent to the view.";
 111     return;
 112   }
 113   base::DictionaryValue diff;
 114   context_.GetChangesAndReset(&diff);
 115   channel_->CommitContextChanges(diff);
 116 }
 117
 118 void BaseScreen::Finish(BaseScreenDelegate::ExitCodes exit_code) {
 119   base_screen_delegate_->OnExit(*this, exit_code, &context_);
 120 }
 121
 122 void BaseScreen::SetContext(::login::ScreenContext* context) {
 123   if (context)
 124     context_.CopyFrom(*context);
 125 }
 126
 127 void BaseScreen::OnUserAction(const std::string& action_id) {
 128   LOG(WARNING) << "Unhandled user action: action_id=" << action_id;
 129 }
 130
 131 void BaseScreen::OnContextKeyUpdated(
 132     const ::login::ScreenContext::KeyType& key) {
 133   LOG(WARNING) << "Unhandled context change: key=" << key;
 134 }
 135
 136 BaseScreen::ContextEditor BaseScreen::GetContextEditor() {
 137   return ContextEditor(*this);
 138 }
 139
 140 void BaseScreen::OnContextChanged(const base::DictionaryValue& diff) {
 141   std::vector<::login::ScreenContext::KeyType> keys;
 142   context_.ApplyChanges(diff, &keys);
 143   for (const auto& key : keys)
 144     OnContextKeyUpdated(key);
 145 }
 146
 147 }  // namespace chromeos