Enable CursorManager::LockCursor to lock cursor visibility.

ash/wm/cursor_manager_unittest.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/wm/cursor_manager.h"
 
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/cursor_manager_test_api.h"
 #include "ash/wm/image_cursors.h"
@@ skipping 38 matching lines @@
   CursorManagerTestApi test_api(cursor_manager);
 
   cursor_manager->SetCursor(ui::kCursorCopy);
   EXPECT_EQ(ui::kCursorCopy, test_api.GetCurrentCursor().native_type());
   EXPECT_TRUE(test_api.GetCurrentCursor().platform());
   cursor_manager->SetCursor(ui::kCursorPointer);
   EXPECT_EQ(ui::kCursorPointer, test_api.GetCurrentCursor().native_type());
   EXPECT_TRUE(test_api.GetCurrentCursor().platform());
 }
 
+TEST_F(CursorManagerTest, ShowCursor) {
+  CursorManager* cursor_manager = Shell::GetInstance()->cursor_manager();
+  CursorManagerTestApi test_api(cursor_manager);
+
+  cursor_manager->SetCursor(ui::kCursorCopy);
+  EXPECT_EQ(ui::kCursorCopy, test_api.GetCurrentCursor().native_type());
+
+  cursor_manager->ShowCursor(true);
+  EXPECT_TRUE(cursor_manager->cursor_visible());
+  cursor_manager->ShowCursor(false);
+  EXPECT_FALSE(cursor_manager->cursor_visible());
+  // The current cursor does not change even when the cursor is not shown.
+  EXPECT_EQ(ui::kCursorCopy, test_api.GetCurrentCursor().native_type());
+
+  // Check if cursor visibility is locked.
+  cursor_manager->LockCursor();
+  EXPECT_FALSE(cursor_manager->cursor_visible());
+  cursor_manager->ShowCursor(true);
+  EXPECT_FALSE(cursor_manager->cursor_visible());
+  cursor_manager->UnlockCursor();
+  EXPECT_TRUE(cursor_manager->cursor_visible());
+
+  cursor_manager->LockCursor();
+  EXPECT_TRUE(cursor_manager->cursor_visible());
+  cursor_manager->ShowCursor(false);
+  EXPECT_TRUE(cursor_manager->cursor_visible());
+  cursor_manager->UnlockCursor();
+  EXPECT_FALSE(cursor_manager->cursor_visible());
+
+  // Checks setting visiblity while cursor is locked does not affect the
+  // subsequent uses of UnlockCursor.
+  cursor_manager->LockCursor();
+  cursor_manager->ShowCursor(false);
+  cursor_manager->UnlockCursor();
+  EXPECT_FALSE(cursor_manager->cursor_visible());
+
+  cursor_manager->ShowCursor(true);
+  cursor_manager->LockCursor();
+  cursor_manager->UnlockCursor();
+  EXPECT_TRUE(cursor_manager->cursor_visible());
+
+  cursor_manager->LockCursor();
+  cursor_manager->ShowCursor(true);
+  cursor_manager->UnlockCursor();
+  EXPECT_TRUE(cursor_manager->cursor_visible());
+
+  cursor_manager->ShowCursor(false);
+  cursor_manager->LockCursor();
+  cursor_manager->UnlockCursor();
+  EXPECT_FALSE(cursor_manager->cursor_visible());
+}
+
 TEST_F(CursorManagerTest, SetDeviceScaleFactor) {
   CursorManager* cursor_manager = Shell::GetInstance()->cursor_manager();
   CursorManagerTestApi test_api(cursor_manager);
 
   cursor_manager->SetDeviceScaleFactor(2.0f);
   EXPECT_EQ(2.0f, test_api.GetDeviceScaleFactor());
   cursor_manager->SetDeviceScaleFactor(1.0f);
   EXPECT_EQ(1.0f, test_api.GetDeviceScaleFactor());
 }
 
 }  // namespace test
 }  // namespace ash