Do not give instant focus if a view's toplevelwidget is not active

ui/views/widget/native_widget_aura_interactive_uitest.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 "ui/views/widget/native_widget_aura.h"
+
+#include "base/path_service.h"
+#include "ui/aura/window.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/base/ui_base_paths.h"
+#include "ui/gl/test/gl_surface_test_support.h"
+#include "ui/views/controls/textfield/textfield.h"
+#include "ui/views/test/native_widget_factory.h"
+#include "ui/views/test/views_test_base.h"
+#include "ui/views/test/widget_test.h"
+#include "ui/views/widget/widget_delegate.h"
+#include "ui/wm/core/base_focus_rules.h"
+#include "ui/wm/core/focus_controller.h"
+
+namespace views {
+namespace test {
+
+class TestFocusRules : public wm::BaseFocusRules {
+ public:
+  TestFocusRules() {}
+  ~TestFocusRules() override {}
+
+  void set_can_activate(bool can_activate) { can_activate_ = can_activate; }
+
+  // wm::BaseFocusRules overrides:
+  bool SupportsChildActivation(aura::Window* window) const override {
+    return true;
+  }
+
+  bool CanActivateWindow(aura::Window* window) const override {
+    return can_activate_;
+  }
+
+ private:
+  bool can_activate_ = true;
+
+  DISALLOW_COPY_AND_ASSIGN(TestFocusRules);
+};
+
+class NativeWidgetAuraTest : public ViewsTestBase {
+ public:
+  NativeWidgetAuraTest() {}
+  ~NativeWidgetAuraTest() override {}
+
+  void SetUp() override {
+    gl::GLSurfaceTestSupport::InitializeOneOff();

[sky, 2016/10/21 03:14:18]

Ugh, we should really move this to a common base class so it isn't copied every
where. Please file a bug on this (I don't want to hold your patch up any
longer).

[Qiang(Joe) Xu, 2016/10/21 16:23:06]

Done.

+    ui::RegisterPathProvider();
+    base::FilePath ui_test_pak_path;
+    ASSERT_TRUE(PathService::Get(ui::UI_TEST_PAK, &ui_test_pak_path));
+    ui::ResourceBundle::InitSharedInstanceWithPakPath(ui_test_pak_path);
+
+    ViewsTestBase::SetUp();
+  }
+
+  NativeWidget* CreateNativeWidget(const Widget::InitParams& params,
+                                   Widget* widget) {
+    return CreatePlatformNativeWidgetImpl(params, widget, kDefault, nullptr);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(NativeWidgetAuraTest);
+};
+
+// (crbug.com/621791)

[sky, 2016/10/21 03:14:18]

Please add a descriptive comment. You shouldn't need to chase down a bug report
to figure out what the test is covering.

[Qiang(Joe) Xu, 2016/10/21 16:23:07]

Done.

+TEST_F(NativeWidgetAuraTest, NonActiveWindowRequestImeFocus) {
+  TestFocusRules* test_focus_rules = new TestFocusRules;
+  std::unique_ptr<wm::FocusController> focus_controller =
+      base::MakeUnique<wm::FocusController>(test_focus_rules);
+  aura::client::SetActivationClient(GetContext(), focus_controller.get());
+
+  Widget* widget1 = new Widget;
+  Widget::InitParams params1(Widget::InitParams::TYPE_WINDOW_FRAMELESS);
+  params1.context = GetContext();
+  params1.native_widget = CreateNativeWidget(params1, widget1);
+  params1.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  widget1->Init(params1);
+  Textfield* textfield1 = new Textfield;
+  widget1->GetRootView()->AddChildView(textfield1);
+
+  Widget* widget2 = new Widget;
+  Widget::InitParams params2(Widget::InitParams::TYPE_WINDOW_FRAMELESS);
+  params2.context = GetContext();
+  params2.native_widget = CreateNativeWidget(params2, widget2);
+  params2.ownership = Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
+  widget2->Init(params2);
+  Textfield* textfield2a = new Textfield;
+  widget2->GetRootView()->AddChildView(textfield2a);
+  Textfield* textfield2b = new Textfield;
+  widget2->GetRootView()->AddChildView(textfield2b);
+
+  views::test::WidgetActivationWaiter waiter1(widget1, true);
+  widget1->Show();
+  waiter1.Wait();
+  textfield1->RequestFocus();
+  EXPECT_TRUE(textfield1->HasFocus());
+  EXPECT_FALSE(textfield2a->HasFocus());
+  EXPECT_FALSE(textfield2b->HasFocus());
+
+  // Don't allow window activation at this step.
+  test_focus_rules->set_can_activate(false);
+  textfield2a->RequestFocus();
+  EXPECT_TRUE(textfield1->HasFocus());
+  EXPECT_FALSE(textfield2a->HasFocus());
+  EXPECT_FALSE(textfield2b->HasFocus());
+
+  // Allow window activation and |widget2| gets activated at this step, focus
+  // should be properly restored.
+  test_focus_rules->set_can_activate(true);
+  views::test::WidgetActivationWaiter waiter2(widget2, true);
+  widget2->Activate();
+  waiter2.Wait();
+  EXPECT_TRUE(textfield2a->HasFocus());
+  EXPECT_FALSE(textfield2b->HasFocus());
+  EXPECT_FALSE(textfield1->HasFocus());
+
+  widget1->CloseNow();
+  widget2->CloseNow();
+}
+
+}  // namespace test
+}  // namespace views