Support modal windows

athena/screen/modal_window_controller_unittest.cc

Index: athena/screen/modal_window_controller_unittest.cc
diff --git a/athena/screen/modal_window_controller_unittest.cc b/athena/screen/modal_window_controller_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b73399a60f963ec728bbc74ed1fff82a1b5f012b
--- /dev/null
+++ b/athena/screen/modal_window_controller_unittest.cc
@@ -0,0 +1,144 @@
+// 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/screen/modal_window_controller.h"
+#include "athena/screen/screen_manager_impl.h"
+#include "athena/test/base/athena_test_base.h"
+#include "athena/test/base/test_windows.h"
+#include "athena/util/container_priorities.h"
+#include "ui/aura/test/test_window_delegate.h"
+#include "ui/aura/window.h"
+
+namespace athena {
+
+typedef test::AthenaTestBase ModalWindowControllerTest;
+
+aura::Window* FindContainerByPriority(int priority) {
+  ScreenManagerImpl* screen_manager =
+      static_cast<ScreenManagerImpl*>(ScreenManager::Get());
+  return screen_manager->FindContainerByPriority(priority);
+}
+
+TEST_F(ModalWindowControllerTest, ModalContainer) {
+  aura::test::EventCountDelegate delegate;
+  scoped_ptr<aura::Window> modal(test::CreateTransientWindow(
+      &delegate, NULL, ui::MODAL_TYPE_SYSTEM, false));
+
+  aura::Window* modal_container = FindContainerByPriority(CP_SYSTEM_MODAL);
+  EXPECT_TRUE(modal_container);
+
+  ModalWindowController* modal_controller =
+      ModalWindowController::Get(modal_container);
+  ASSERT_TRUE(modal_controller);
+  EXPECT_EQ(modal_container, modal->parent());
+  EXPECT_FALSE(modal_controller->dimmed());
+  modal->Show();
+  EXPECT_TRUE(modal_controller->dimmed());
+
+  modal->Hide();
+  EXPECT_TRUE(FindContainerByPriority(CP_SYSTEM_MODAL));
+  EXPECT_FALSE(modal_controller->dimmed());
+
+  modal->Show();
+  EXPECT_TRUE(FindContainerByPriority(CP_SYSTEM_MODAL));
+  EXPECT_TRUE(modal_controller->dimmed());
+
+  modal.reset();
+  EXPECT_FALSE(FindContainerByPriority(CP_SYSTEM_MODAL));
+
+  // Create two.
+  modal = test::CreateTransientWindow(
+              &delegate, NULL, ui::MODAL_TYPE_SYSTEM, false).Pass();
+  scoped_ptr<aura::Window> modal2(test::CreateTransientWindow(
+      &delegate, NULL, ui::MODAL_TYPE_SYSTEM, false));
+
+  modal_container = FindContainerByPriority(CP_SYSTEM_MODAL);
+  EXPECT_TRUE(modal_container);
+  modal_controller = ModalWindowController::Get(modal_container);
+  ASSERT_TRUE(modal_controller);
+  EXPECT_EQ(modal_container, modal->parent());
+  EXPECT_EQ(modal_container, modal2->parent());
+
+  EXPECT_FALSE(modal_controller->dimmed());
+  modal->Show();
+  EXPECT_TRUE(modal_controller->dimmed());
+  modal2->Show();
+  EXPECT_TRUE(modal_controller->dimmed());
+
+  modal->Hide();
+  EXPECT_TRUE(modal_controller->dimmed());
+  modal2->Hide();
+  EXPECT_FALSE(modal_controller->dimmed());
+  EXPECT_TRUE(FindContainerByPriority(CP_SYSTEM_MODAL));
+
+  modal2.reset();
+  EXPECT_TRUE(FindContainerByPriority(CP_SYSTEM_MODAL));
+  EXPECT_FALSE(modal_controller->dimmed());
+
+  modal.reset();
+  EXPECT_FALSE(FindContainerByPriority(CP_SYSTEM_MODAL));
+}
+
+TEST_F(ModalWindowControllerTest, NestedModalWindows) {
+  ScreenManager::ContainerParams params("top", CP_END);
+  params.can_activate_children = true;
+  params.modal_container_priority = CP_END + 1;
+  aura::Window* top_container = ScreenManager::Get()->CreateContainer(params);
+
+  aura::test::TestWindowDelegate delegate;
+  scoped_ptr<aura::Window> top_w1(
+      test::CreateNormalWindow(&delegate, top_container));
+  EXPECT_EQ(top_container, top_w1->parent());
+
+  aura::Window* default_container = FindContainerByPriority(CP_DEFAULT);
+  EXPECT_TRUE(default_container);
+
+  scoped_ptr<aura::Window> normal_w1(test::CreateNormalWindow(&delegate, NULL));
+  EXPECT_EQ(default_container, normal_w1->parent());
+
+  scoped_ptr<aura::Window> normal_m1(test::CreateTransientWindow(
+      &delegate, normal_w1.get(), ui::MODAL_TYPE_SYSTEM, false));
+  aura::Window* default_modal_container =
+      FindContainerByPriority(CP_SYSTEM_MODAL);
+  EXPECT_EQ(default_modal_container, normal_m1->parent());
+
+  // A modal window with the transient parent which doesn't specify
+  // the modal container should fallback the default container's modal
+  // container.
+  aura::Window* home_container = FindContainerByPriority(CP_DEFAULT);
+  EXPECT_TRUE(home_container);
+
+  scoped_ptr<aura::Window> normal_m2(test::CreateTransientWindow(
+      &delegate, home_container, ui::MODAL_TYPE_SYSTEM, false));
+  EXPECT_EQ(default_modal_container, normal_m2->parent());
+
+  // No modal container for top container yet.
+  EXPECT_FALSE(FindContainerByPriority(CP_END + 1));
+
+  // Creating a modal with always on top creates the modal dialog on top
+  // most dialog container.
+  scoped_ptr<aura::Window> top_m0(test::CreateTransientWindow(
+      &delegate, NULL, ui::MODAL_TYPE_SYSTEM, true));
+
+  aura::Window* top_modal_container = FindContainerByPriority(CP_END + 1);
+  EXPECT_EQ(top_modal_container, top_m0->parent());
+
+  // Creating a modal dialog with transient parent on the top container
+  // creates the winodw on the top container's modal container.
+  scoped_ptr<aura::Window> top_m1(test::CreateTransientWindow(
+      &delegate, top_w1.get(), ui::MODAL_TYPE_SYSTEM, true));
+  EXPECT_EQ(top_modal_container, top_m1->parent());
+
+  normal_m1.reset();
+  EXPECT_TRUE(FindContainerByPriority(CP_SYSTEM_MODAL));
+  normal_m2.reset();
+  EXPECT_FALSE(FindContainerByPriority(CP_SYSTEM_MODAL));
+
+  top_m0.reset();
+  EXPECT_TRUE(FindContainerByPriority(CP_END + 1));
+  top_m1.reset();
+  EXPECT_FALSE(FindContainerByPriority(CP_END + 1));
+}
+
+}  // namespace athena