Restructure login

mash/login/ui.cc

+// Copyright 2016 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 "mash/login/ui.h"
+
+#include "base/guid.h"
+#include "base/strings/utf_string_conversions.h"
+#include "components/mus/public/cpp/property_type_converters.h"
+#include "mash/login/login.h"
+#include "mash/wm/public/interfaces/container.mojom.h"
+#include "mojo/shell/public/cpp/connector.h"
+#include "ui/views/background.h"
+#include "ui/views/mus/native_widget_mus.h"
+#include "ui/views/mus/window_manager_connection.h"
+
+namespace mash {
+namespace login {
+
+// static
+bool UI::is_showing_ = false;
+
+// static
+void UI::Show(mojo::Connector* connector, LoginController* login_controller) {
+  // It's possible multiple clients may have a connection to the Login service,
+  // so make sure that only one login UI can be shown at a time.
+  if (is_showing_)
+    return;
+
+  UI* ui = new UI(login_controller, connector);
+
+  // TODO(beng): If this is only done once, it should be done in
+  // LoginController::Initialize(). However, for as yet unknown reasons it needs
+  // to be done the first time after UI(). Figure this out. Also, I'm not
+  // certain the window manager is being killed when this UI is closed.
+  if (!views::WindowManagerConnection::Exists())
+    views::WindowManagerConnection::Create(connector);
+
+  views::Widget* widget = new views::Widget;
+  views::Widget::InitParams params(
+      views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
+  params.delegate = ui;
+
+  std::map<std::string, std::vector<uint8_t>> properties;
+  properties[mash::wm::mojom::kWindowContainer_Property] =
+      mojo::TypeConverter<const std::vector<uint8_t>, int32_t>::Convert(
+          static_cast<int32_t>(mash::wm::mojom::Container::LOGIN_WINDOWS));
+  mus::Window* window =
+      views::WindowManagerConnection::Get()->NewWindow(properties);
+  params.native_widget = new views::NativeWidgetMus(
+      widget, connector, window, mus::mojom::SurfaceType::DEFAULT);
+  widget->Init(params);
+  widget->Show();
+
+  is_showing_ = true;
+}
+
+UI::UI(LoginController* login_controller, mojo::Connector* connector)
+    : login_controller_(login_controller),
+      connector_(connector),
+      user_id_1_("00000000-0000-4000-8000-000000000000"),
+      user_id_2_("00000000-0000-4000-8000-000000000001"),
+      login_button_1_(
+          new views::LabelButton(this, base::ASCIIToUTF16("Timothy"))),
+      login_button_2_(
+          new views::LabelButton(this, base::ASCIIToUTF16("Jimothy"))) {
+  connector_->ConnectToInterface("mojo:mus", &user_access_manager_);
+  user_access_manager_->SetActiveUser(login_controller->login_user_id());
+  StartWindowManager();
+
+  set_background(views::Background::CreateSolidBackground(SK_ColorRED));
+  login_button_1_->SetStyle(views::Button::STYLE_BUTTON);
+  login_button_2_->SetStyle(views::Button::STYLE_BUTTON);
+  AddChildView(login_button_1_);
+  AddChildView(login_button_2_);
+}
+
+UI::~UI() {
+  // Prevent the window manager from restarting during graceful shutdown.
+  window_manager_connection_->SetConnectionLostClosure(base::Closure());
+  is_showing_ = false;
+}
+
+views::View* UI::GetContentsView() { return this; }
+
+base::string16 UI::GetWindowTitle() const {
+  // TODO(beng): use resources.
+  return base::ASCIIToUTF16("Login");
+}
+
+void UI::DeleteDelegate() {
+  delete this;
+}
+
+void UI::Layout() {
+  gfx::Rect button_box = GetLocalBounds();
+  button_box.Inset(10, 10);
+
+  gfx::Size ps1 = login_button_1_->GetPreferredSize();
+  gfx::Size ps2 = login_button_2_->GetPreferredSize();
+
+  DCHECK(ps1.height() == ps2.height());
+
+  // The 10 is inter-button spacing.
+  button_box.set_x((button_box.width() - ps1.width() - ps2.width() - 10) / 2);
+  button_box.set_y((button_box.height() - ps1.height()) / 2);
+
+  login_button_1_->SetBounds(button_box.x(), button_box.y(), ps1.width(),
+                              ps1.height());
+  login_button_2_->SetBounds(login_button_1_->bounds().right() + 10,
+                              button_box.y(), ps2.width(), ps2.height());
+}
+
+void UI::ButtonPressed(views::Button* sender, const ui::Event& event) {
+  // Login...
+  if (sender == login_button_1_) {
+    user_access_manager_->SetActiveUser(user_id_1_);
+    login_controller_->init()->StartService("mojo:mash_shell", user_id_1_);
+  } else if (sender == login_button_2_) {
+    user_access_manager_->SetActiveUser(user_id_2_);
+    login_controller_->init()->StartService("mojo:mash_shell", user_id_2_);
+  } else {
+    NOTREACHED();
+  }
+  GetWidget()->Close();
+}
+
+void UI::StartWindowManager() {
+  window_manager_connection_ = connector_->Connect("mojo:desktop_wm");
+  window_manager_connection_->SetConnectionLostClosure(
+      base::Bind(&UI::StartWindowManager, base::Unretained(this)));
+}
+
+}  // namespace login
+}  // namespace mash