mash: Prerequisites for removing ShelfDelegate.

ash/test/test_shell_delegate.cc

 // Copyright (c) 2012 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 "ash/test/test_shell_delegate.h"
 
 #include <limits>
 
 #include "ash/default_accessibility_delegate.h"
 #include "ash/gpu_support_stub.h"
 #include "ash/palette_delegate.h"
 #include "ash/public/cpp/shell_window_ids.h"
+#include "ash/root_window_controller.h"
 #include "ash/session/session_state_delegate.h"
+#include "ash/shelf/wm_shelf.h"
+#include "ash/shell.h"
+#include "ash/shell_observer.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/test/test_keyboard_ui.h"
 #include "ash/test/test_session_state_delegate.h"
 #include "ash/test/test_shelf_delegate.h"
 #include "ash/test/test_system_tray_delegate.h"
 #include "ash/test/test_wallpaper_delegate.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
+#include "ash/wm_window.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "ui/aura/window.h"
 #include "ui/gfx/image/image.h"
 
 namespace ash {
 namespace test {
 
+// A ShellObserver that sets the shelf alignment and auto hide behavior when the
+// shelf is created, to simulate ChromeLauncherController's behavior.
+class ShelfInitializer : public ShellObserver {
+ public:
+  ShelfInitializer() { Shell::Get()->AddShellObserver(this); }
+  ~ShelfInitializer() override { Shell::Get()->RemoveShellObserver(this); }
+
+  // ShellObserver:
+  void OnShelfCreatedForRootWindow(WmWindow* root_window) override {
+    WmShelf* shelf = root_window->GetRootWindowController()->GetShelf();
+    // Do not override the custom initialization performed by some unit tests.
+    if (shelf->alignment() == SHELF_ALIGNMENT_BOTTOM_LOCKED &&
+        shelf->auto_hide_behavior() == SHELF_AUTO_HIDE_ALWAYS_HIDDEN) {
+      shelf->SetAlignment(SHELF_ALIGNMENT_BOTTOM);
+      shelf->SetAutoHideBehavior(SHELF_AUTO_HIDE_BEHAVIOR_NEVER);
+      shelf->UpdateVisibilityState();
+    }
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ShelfInitializer);
+};
+
 TestShellDelegate::TestShellDelegate()
     : num_exit_requests_(0),
       multi_profiles_enabled_(false),
       force_maximize_on_first_run_(false),
       touchscreen_enabled_in_local_pref_(true) {}
 
 TestShellDelegate::~TestShellDelegate() {}
 
 ::service_manager::Connector* TestShellDelegate::GetShellConnector() const {
   return nullptr;
@@ skipping 27 matching lines @@
   num_exit_requests_++;
 }
 
 keyboard::KeyboardUI* TestShellDelegate::CreateKeyboardUI() {
   return new TestKeyboardUI;
 }
 
 void TestShellDelegate::OpenUrlFromArc(const GURL& url) {}
 
 ShelfDelegate* TestShellDelegate::CreateShelfDelegate(ShelfModel* model) {
+  // Create a separate shelf initializer that mimics ChromeLauncherController.
+  shelf_initializer_ = base::MakeUnique<ShelfInitializer>();
   return new TestShelfDelegate();
 }
 
 SystemTrayDelegate* TestShellDelegate::CreateSystemTrayDelegate() {
   return new TestSystemTrayDelegate;
 }
 
 std::unique_ptr<WallpaperDelegate>
 TestShellDelegate::CreateWallpaperDelegate() {
   return base::MakeUnique<TestWallpaperDelegate>();
@@ skipping 37 matching lines @@
 void TestShellDelegate::SetTouchscreenEnabledInPrefs(bool enabled,
                                                      bool use_local_state) {
   if (use_local_state)
     touchscreen_enabled_in_local_pref_ = enabled;
 }
 
 void TestShellDelegate::UpdateTouchscreenStatusFromPrefs() {}
 
 }  // namespace test
 }  // namespace ash