Ensure that the AURA focused window is set correctly when the window is activated.

ui/views/widget/widget_interactive_uitest.cc

+// Copyright (c) 2013 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 "base/basictypes.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/views/widget/widget.h"
+
+#if defined(USE_AURA)
+#include "ui/aura/client/activation_client.h"
+#include "ui/aura/root_window.h"
+#include "ui/views/test/views_test_base.h"
+#if !defined(OS_CHROMEOS)
+#include "ui/views/widget/desktop_aura/desktop_native_widget_aura.h"
+#endif
+#endif
+
+namespace views {
+
+#if defined(OS_WIN) && defined(USE_AURA)
+// Tests whether activation and focus change works correctly in Windows AURA.
+// We test the following:-
+// 1. If the active aura window is correctly set when a top level widget is
+//    created.
+// 2. If the active aura window in widget 1 created above, is set to NULL when
+//    another top level widget is created and focused.
+// 3. On focusing the native platform window for widget 1, the active aura
+//    window for widget 1 should be set and that for widget 2 should reset.
+// TODO(ananta)
+// Discuss with erg on how to write this test for linux x11 aura.
+TEST_F(ViewsTestBase, DesktopNativeWidgetAuraActivationAndFocusTest) {
+  // Create widget 1 and expect the active window to be its window.
+  View* contents_view1 = new View;
+  contents_view1->set_focusable(true);
+  Widget widget1;
+  Widget::InitParams init_params =
+      CreateParams(Widget::InitParams::TYPE_WINDOW_FRAMELESS);
+  init_params.bounds = gfx::Rect(0, 0, 200, 200);
+  init_params.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  init_params.native_widget = new DesktopNativeWidgetAura(&widget1);
+  widget1.Init(init_params);
+  widget1.SetContentsView(contents_view1);
+  widget1.Show();
+  aura::RootWindow* root_window1= widget1.GetNativeView()->GetRootWindow();
+  contents_view1->RequestFocus();
+
+  EXPECT_TRUE(root_window1 != NULL);
+  aura::client::ActivationClient* activation_client1 =
+      aura::client::GetActivationClient(root_window1);
+  EXPECT_TRUE(activation_client1 != NULL);
+  EXPECT_EQ(activation_client1->GetActiveWindow(), widget1.GetNativeView());
+
+  // Create widget 2 and expect the active window to be its window.
+  View* contents_view2 = new View;
+  Widget widget2;
+  Widget::InitParams init_params2 =
+      CreateParams(Widget::InitParams::TYPE_WINDOW_FRAMELESS);
+  init_params2.bounds = gfx::Rect(0, 0, 200, 200);
+  init_params2.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  init_params2.native_widget = new DesktopNativeWidgetAura(&widget2);
+  widget2.Init(init_params2);
+  widget2.SetContentsView(contents_view2);
+  widget2.Show();
+  aura::RootWindow* root_window2 = widget2.GetNativeView()->GetRootWindow();
+  contents_view2->RequestFocus();
+  ::SetActiveWindow(root_window2->GetAcceleratedWidget());
+
+  aura::client::ActivationClient* activation_client2 =
+      aura::client::GetActivationClient(root_window2);
+  EXPECT_TRUE(activation_client2 != NULL);
+  EXPECT_EQ(activation_client2->GetActiveWindow(), widget2.GetNativeView());
+  EXPECT_EQ(activation_client1->GetActiveWindow(),
+            reinterpret_cast<aura::Window*>(NULL));
+
+  // Now set focus back to widget 1 and expect the active window to be its
+  // window.
+  contents_view1->RequestFocus();
+  ::SetActiveWindow(root_window1->GetAcceleratedWidget());
+  EXPECT_EQ(activation_client2->GetActiveWindow(),
+            reinterpret_cast<aura::Window*>(NULL));
+  EXPECT_EQ(activation_client1->GetActiveWindow(), widget1.GetNativeView());
+}
+#endif
+
+}  // namespace views