Adding mojo calls for easy unlock service

chrome/browser/chromeos/login/lock/view_screen_locker.cc

+// Copyright 2017 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/login/lock/view_screen_locker.h"
+
+#include "base/metrics/histogram_macros.h"
+#include "chrome/browser/chromeos/login/screens/chrome_user_selection_screen.h"
+
+namespace chromeos {
+
+namespace {
+const char kLockDisplay[] = "lock";

[xiyuan, 2017/05/31 17:51:18]

nit: const -> constexpr

[xiaoyinh(OOO Sep 11-29), 2017/06/02 23:42:29]

Done.

+}  // namespace
+
+ViewScreenLocker::ViewScreenLocker(ScreenLocker* screen_locker)
+    : screen_locker_(screen_locker), weak_factory_(this) {
+  LockScreenClient::Get()->SetDelegate(this);
+  user_selection_screen_.reset(new ChromeUserSelectionScreen(kLockDisplay));
+  user_selection_screen_->SetView(LockScreenClient::Get());
+}
+
+ViewScreenLocker::~ViewScreenLocker() {
+  LockScreenClient::Get()->SetDelegate(nullptr);
+}
+
+void ViewScreenLocker::SetPasswordInputEnabled(bool enabled) {
+  NOTIMPLEMENTED();
+}
+
+void ViewScreenLocker::ShowErrorMessage(
+    int error_msg_id,
+    HelpAppLauncher::HelpTopic help_topic_id) {
+  // TODO(xiaoyinh): Complete the implementation here.
+  LockScreenClient::Get()->ShowErrorMessage(0 /* login_attempts */,
+                                            std::string(), std::string(),
+                                            static_cast<int>(help_topic_id));
+}
+
+void ViewScreenLocker::ClearErrors() {
+  LockScreenClient::Get()->ClearErrors();
+}
+
+void ViewScreenLocker::AnimateAuthenticationSuccess() {
+  NOTIMPLEMENTED();
+}
+
+void ViewScreenLocker::OnLockWebUIReady() {
+  NOTIMPLEMENTED();
+}
+
+void ViewScreenLocker::OnLockBackgroundDisplayed() {
+  NOTIMPLEMENTED();
+}
+
+void ViewScreenLocker::OnHeaderBarVisible() {
+  NOTIMPLEMENTED();
+}
+
+void ViewScreenLocker::OnAshLockAnimationFinished() {
+  NOTIMPLEMENTED();
+}
+
+void ViewScreenLocker::SetFingerprintState(
+    const AccountId& account_id,
+    ScreenLocker::FingerprintState state) {
+  NOTIMPLEMENTED();
+}
+
+content::WebContents* ViewScreenLocker::GetWebContents() {
+  return nullptr;
+}
+
+void ViewScreenLocker::Init() {
+  lock_time_ = base::TimeTicks::Now();
+  user_selection_screen_->Init(screen_locker_->users(), false /* show_guest */);
+  user_selection_screen_->HandleGetUsers();

[xiyuan, 2017/05/31 17:51:18]

Prefer to split UserSelectionScreen::SendUserList to get an explicit method to
create a user list and pass to LockScreenClient instead of depending on
HandleGetUsers() -> SendUserList().

[xiaoyinh(OOO Sep 11-29), 2017/06/02 23:42:29]

Done.

+}
+
+void ViewScreenLocker::OnLockScreenReady() {
+  user_selection_screen_->InitEasyUnlock();
+  UMA_HISTOGRAM_TIMES("LockScreen.LockReady",
+                      base::TimeTicks::Now() - lock_time_);
+  screen_locker_->ScreenLockReady();
+}
+
+void ViewScreenLocker::HandleAttemptUnlock(const AccountId& account_id) {
+  user_selection_screen_->AttemptEasyUnlock(account_id);
+}
+
+void ViewScreenLocker::HandleHardlockPod(const AccountId& account_id) {
+  user_selection_screen_->HardLockPod(account_id);
+}
+
+void ViewScreenLocker::HandleRecordClickOnLockIcon(
+    const AccountId& account_id) {
+  user_selection_screen_->RecordClickOnLockIcon(account_id);
+}
+
+}  // namespace chromeos