Rework ash::CursorManager into a corewm object, to share code with desktop.

ui/views/corewm/cursor_manager_unittest.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 "ui/views/corewm/cursor_manager.h"
+
+#include "ui/views/corewm/native_cursor_manager.h"
+#include "ui/views/test/views_test_base.h"
+
+namespace {
+
+class TestingCursorManager : public views::corewm::NativeCursorManager {
+ public:
+  gfx::NativeCursor current_cursor() { return cursor_; }
+
+  // Overridden from views::corewm::NativeCursorManager:
+  virtual void SetDeviceScaleFactor(
+      float device_scale_factor,
+      views::corewm::NativeCursorManagerDelegate* delegate) OVERRIDE {}
+
+  virtual void SetCursor(
+      gfx::NativeCursor cursor,
+      views::corewm::NativeCursorManagerDelegate* delegate) OVERRIDE {
+    cursor_ = cursor;
+    delegate->CommitCursor(cursor);
+  }
+
+  virtual void SetVisibility(
+      bool visible,
+      views::corewm::NativeCursorManagerDelegate* delegate) OVERRIDE {
+    delegate->CommitVisibility(visible);
+  }
+
+  virtual void SetMouseEventsEnabled(
+      bool enabled,
+      views::corewm::NativeCursorManagerDelegate* delegate) OVERRIDE {
+    delegate->CommitMouseEventsEnabled(enabled);
+  }
+
+ private:
+  gfx::NativeCursor cursor_;
+};
+
+}  // namespace
+
+class CursorManagerTest : public views::ViewsTestBase {
+ protected:
+  CursorManagerTest()
+      : delegate_(new TestingCursorManager),
+        cursor_manager_(scoped_ptr<views::corewm::NativeCursorManager>(
+            delegate_)) {
+  }
+
+  gfx::NativeCursor current_cursor() { return delegate_->current_cursor(); }
+
+  TestingCursorManager* delegate_;
+  views::corewm::CursorManager cursor_manager_;
+};
+
+TEST_F(CursorManagerTest, ShowHideCursor) {
+  cursor_manager_.SetCursor(ui::kCursorCopy);
+  EXPECT_EQ(ui::kCursorCopy, current_cursor().native_type());
+
+  cursor_manager_.ShowCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+  cursor_manager_.HideCursor();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  // The current cursor does not change even when the cursor is not shown.
+  EXPECT_EQ(ui::kCursorCopy, current_cursor().native_type());
+
+  // Check if cursor visibility is locked.
+  cursor_manager_.LockCursor();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  cursor_manager_.ShowCursor();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  cursor_manager_.UnlockCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+
+  cursor_manager_.LockCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+  cursor_manager_.HideCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+  cursor_manager_.UnlockCursor();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+
+  // Checks setting visiblity while cursor is locked does not affect the
+  // subsequent uses of UnlockCursor.
+  cursor_manager_.LockCursor();
+  cursor_manager_.HideCursor();
+  cursor_manager_.UnlockCursor();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+
+  cursor_manager_.ShowCursor();
+  cursor_manager_.LockCursor();
+  cursor_manager_.UnlockCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+
+  cursor_manager_.LockCursor();
+  cursor_manager_.ShowCursor();
+  cursor_manager_.UnlockCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+
+  cursor_manager_.HideCursor();
+  cursor_manager_.LockCursor();
+  cursor_manager_.UnlockCursor();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+}
+
+// Verifies that LockCursor/UnlockCursor work correctly with
+// EnableMouseEvents and DisableMouseEvents
+TEST_F(CursorManagerTest, EnableDisableMouseEvents) {
+  cursor_manager_.SetCursor(ui::kCursorCopy);
+  EXPECT_EQ(ui::kCursorCopy, current_cursor().native_type());
+
+  cursor_manager_.EnableMouseEvents();
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.DisableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+  // The current cursor does not change even when the cursor is not shown.
+  EXPECT_EQ(ui::kCursorCopy, current_cursor().native_type());
+
+  // Check if cursor enable state is locked.
+  cursor_manager_.LockCursor();
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.EnableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.UnlockCursor();
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+
+  cursor_manager_.LockCursor();
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.DisableMouseEvents();
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.UnlockCursor();
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+
+  // Checks enabling cursor while cursor is locked does not affect the
+  // subsequent uses of UnlockCursor.
+  cursor_manager_.LockCursor();
+  cursor_manager_.DisableMouseEvents();
+  cursor_manager_.UnlockCursor();
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+
+  cursor_manager_.EnableMouseEvents();
+  cursor_manager_.LockCursor();
+  cursor_manager_.UnlockCursor();
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+
+  cursor_manager_.LockCursor();
+  cursor_manager_.EnableMouseEvents();
+  cursor_manager_.UnlockCursor();
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+
+  cursor_manager_.DisableMouseEvents();
+  cursor_manager_.LockCursor();
+  cursor_manager_.UnlockCursor();
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+}
+
+TEST_F(CursorManagerTest, IsMouseEventsEnabled) {
+  cursor_manager_.EnableMouseEvents();
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.DisableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+}
+
+// Verifies that the mouse events enable state changes correctly when
+// ShowCursor/HideCursor and EnableMouseEvents/DisableMouseEvents are used
+// together.
+TEST_F(CursorManagerTest, ShowAndEnable) {
+  // Changing the visibility of the cursor does not affect the enable state.
+  cursor_manager_.EnableMouseEvents();
+  cursor_manager_.ShowCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.HideCursor();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.ShowCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+
+  // When mouse events are disabled, it also gets invisible.
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+  cursor_manager_.DisableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+
+  // When mouse events are enabled, it restores the visibility state.
+  cursor_manager_.EnableMouseEvents();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+
+  cursor_manager_.ShowCursor();
+  cursor_manager_.DisableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.EnableMouseEvents();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+
+  cursor_manager_.HideCursor();
+  cursor_manager_.DisableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.EnableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  EXPECT_TRUE(cursor_manager_.IsMouseEventsEnabled());
+
+  // When mouse events are disabled, ShowCursor is ignored.
+  cursor_manager_.DisableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.ShowCursor();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+  cursor_manager_.DisableMouseEvents();
+  EXPECT_FALSE(cursor_manager_.IsCursorVisible());
+  EXPECT_FALSE(cursor_manager_.IsMouseEventsEnabled());
+}
+
+// Verifies that calling DisableMouseEvents multiple times in a row makes no
+// difference compared with calling it once.
+// This is a regression test for http://crbug.com/169404.
+TEST_F(CursorManagerTest, MultipleDisableMouseEvents) {
+  cursor_manager_.DisableMouseEvents();
+  cursor_manager_.DisableMouseEvents();
+  cursor_manager_.EnableMouseEvents();
+  cursor_manager_.LockCursor();
+  cursor_manager_.UnlockCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+}
+
+// Verifies that calling EnableMouseEvents multiple times in a row makes no
+// difference compared with calling it once.
+TEST_F(CursorManagerTest, MultipleEnableMouseEvents) {
+  cursor_manager_.DisableMouseEvents();
+  cursor_manager_.EnableMouseEvents();
+  cursor_manager_.EnableMouseEvents();
+  cursor_manager_.LockCursor();
+  cursor_manager_.UnlockCursor();
+  EXPECT_TRUE(cursor_manager_.IsCursorVisible());
+}