athena: Add a minimal executable for just the UI.

athena/ui/athena_ui_main.cc

+// Copyright 2014 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 "athena/home/public/home_card.h"
+#include "athena/screen/public/screen_manager.h"
+#include "athena/wm/public/window_manager.h"
+#include "base/at_exit.h"
+#include "base/command_line.h"
+#include "base/i18n/icu_util.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "ui/aura/test/test_screen.h"
+#include "ui/aura/window_tree_host.h"
+#include "ui/base/ime/input_method_initializer.h"
+#include "ui/compositor/compositor.h"
+#include "ui/compositor/test/context_factories_for_test.h"
+#include "ui/gl/gl_surface.h"
+#include "ui/wm/core/visibility_controller.h"
+#include "ui/wm/test/wm_test_helper.h"
+
+class UIShell {
+ public:
+  UIShell() {
+    InitScreen();
+    InitIME();
+    InitWindow();
+    InitAthenaUI();
+  }
+
+  void Show() {
+    wm_helper_->host()->Show();
+  }
+
+ private:
+  void InitScreen() {
+    test_screen_.reset(aura::TestScreen::Create());
+    gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE, test_screen_.get());
+    const bool enable_pixel_output = true;
+    ui::InitializeContextFactoryForTests(enable_pixel_output);
+  }
+
+  void InitIME() {
+    ui::InitializeInputMethodForTesting();
+  }
+
+  void InitWindow() {
+    const gfx::Size window_size(800, 600);
+    wm_helper_.reset(new wm::WMTestHelper(window_size,
+                                          ui::ContextFactory::GetInstance()));
+
+    visibility_controller_.reset(new wm::VisibilityController());
+    aura::client::SetVisibilityClient(wm_helper_->host()->window(),
+                                      visibility_controller_.get());
+  }
+
+  void InitAthenaUI() {

[sadrul, 2014/05/26 18:53:01]

Does it make sense to move this into some other place that both athena_main and
athena_ui_main can use? So we have one place to update instead of two?

[oshima, 2014/05/27 18:32:14]

You can use athena_launcher once it's landed.

https://codereview.chromium.org/301593004/

[sadrul, 2014/05/29 03:03:56]

Done.

+    aura::Window* root = wm_helper_->host()->window();
+    athena::ScreenManager::Create(root);
+    athena::WindowManager::Create();
+    athena::HomeCard::Create();
+  }
+
+  scoped_ptr<aura::TestScreen> test_screen_;
+  scoped_ptr<wm::WMTestHelper> wm_helper_;
+  scoped_ptr<wm::VisibilityController> visibility_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(UIShell);
+};
+
+int main(int argc, const char **argv) {
+  setlocale(LC_ALL, "");
+
+  base::AtExitManager exit_manager;
+  base::CommandLine::Init(argc, argv);
+  base::i18n::InitializeICU();
+  gfx::GLSurface::InitializeOneOffForTests();
+
+  base::MessageLoop message_loop(base::MessageLoop::TYPE_UI);
+  (new UIShell())->Show();
+  base::RunLoop run_loop;
+  run_loop.Run();
+}