private void AttachEventHandlers(UIElement uiElement)
        {
            uiElement.GotFocus += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        // this.browserHost.SetFocus(true);
                        _browserHost.SendFocusEvent(true);
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in GotFocus()", ex);
                }
            };

            uiElement.LostFocus += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        // this.browserHost.SetFocus(false);
                        _browserHost.SendFocusEvent(false);
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in LostFocus()", ex);
                }
            };

            uiElement.LostMouseCapture += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        _browserHost.SendCaptureLostEvent();
                        //_logger.Debug("Browser_LostMouseCapture");
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in LostMouseCapture()", ex);
                }
            };

            uiElement.MouseLeave += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        CefMouseEvent mouseEvent = new CefMouseEvent()
                        {
                            X = 0,
                            Y = 0
                        };

                        _browserHost.SendMouseMoveEvent(mouseEvent, true);
                        //_logger.Debug("Browser_MouseLeave");
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in MouseLeave()", ex);
                }
            };

            uiElement.MouseMove += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        Point cursorPos = arg.GetPosition(this);

                        CefMouseEvent mouseEvent = new CefMouseEvent()
                        {
                            X = (int)cursorPos.X,
                            Y = (int)cursorPos.Y
                        };

                        _browserHost.SendMouseMoveEvent(mouseEvent, false);

                        //_logger.Debug(string.Format("Browser_MouseMove: ({0},{1})", cursorPos.X, cursorPos.Y));
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in MouseMove()", ex);
                }

                arg.Handled = true;
            };

            uiElement.MouseDown += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        CaptureMouse();
                        Keyboard.Focus(this);

                        Point cursorPos = arg.GetPosition(this);

                        CefMouseEvent mouseEvent = new CefMouseEvent()
                        {
                            X = (int)cursorPos.X,
                            Y = (int)cursorPos.Y,
                        };

                        mouseEvent.Modifiers = GetMouseModifiers();

                        if (arg.ChangedButton == MouseButton.Left)
                        {
                            _browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Left, false, 1);
                        }
                        else if (arg.ChangedButton == MouseButton.Middle)
                        {
                            _browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Middle, false, 1);
                        }
                        else if (arg.ChangedButton == MouseButton.Right)
                        {
                            _browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Right, false, 1);
                        }

                        //_logger.Debug(string.Format("Browser_MouseDown: ({0},{1})", cursorPos.X, cursorPos.Y));
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in MouseDown()", ex);
                }

                arg.Handled = true;
            };

            uiElement.MouseUp += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        Point cursorPos = arg.GetPosition(this);

                        CefMouseEvent mouseEvent = new CefMouseEvent()
                        {
                            X = (int)cursorPos.X,
                            Y = (int)cursorPos.Y,
                        };

                        mouseEvent.Modifiers = GetMouseModifiers();

                        if (arg.ChangedButton == MouseButton.Left)
                        {
                            _browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Left, true, 1);
                        }
                        else if (arg.ChangedButton == MouseButton.Middle)
                        {
                            _browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Middle, true, 1);
                        }
                        else if (arg.ChangedButton == MouseButton.Right)
                        {
                            _browserHost.SendMouseClickEvent(mouseEvent, CefMouseButtonType.Right, true, 1);
                        }

                        //_logger.Debug(string.Format("Browser_MouseUp: ({0},{1})", cursorPos.X, cursorPos.Y));

                        ReleaseMouseCapture();
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in MouseUp()", ex);
                }

                arg.Handled = true;
            };

            uiElement.MouseWheel += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        Point cursorPos = arg.GetPosition(this);

                        CefMouseEvent mouseEvent = new CefMouseEvent()
                        {
                            X = (int)cursorPos.X,
                            Y = (int)cursorPos.Y,
                        };

                        _browserHost.SendMouseWheelEvent(mouseEvent, 0, arg.Delta);
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in MouseWheel()", ex);
                }

                arg.Handled = true;
            };

            // TODO: require more intelligent processing
            uiElement.PreviewTextInput += (sender, arg) =>
            {
                if (_browserHost != null)
                {
                    _logger.Debug("TextInput: text {0}", arg.Text);

                    foreach (var c in arg.Text)
                    {
                        CefKeyEvent keyEvent = new CefKeyEvent()
                        {
                            EventType      = CefKeyEventType.Char,
                            WindowsKeyCode = (int)c,
                            // Character = c,
                        };

                        _browserHost.SendKeyEvent(keyEvent);
                    }
                }

                arg.Handled = true;
            };

            // TODO: require more intelligent processing
            uiElement.PreviewKeyDown += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        //_logger.Debug(string.Format("KeyDown: system key {0}, key {1}", arg.SystemKey, arg.Key));
                        CefKeyEvent keyEvent = new CefKeyEvent()
                        {
                            EventType      = CefKeyEventType.RawKeyDown,
                            WindowsKeyCode = KeyInterop.VirtualKeyFromKey(arg.Key == Key.System ? arg.SystemKey : arg.Key),
                            NativeKeyCode  = 0,
                            IsSystemKey    = arg.Key == Key.System,
                        };

                        _browserHost.SendKeyEvent(keyEvent);
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in PreviewKeyDown()", ex);
                }

                arg.Handled = false;
            };

            // TODO: require more intelligent processing
            uiElement.PreviewKeyUp += (sender, arg) =>
            {
                try
                {
                    if (_browserHost != null)
                    {
                        //_logger.Debug(string.Format("KeyUp: system key {0}, key {1}", arg.SystemKey, arg.Key));
                        CefKeyEvent keyEvent = new CefKeyEvent()
                        {
                            EventType      = CefKeyEventType.KeyUp,
                            WindowsKeyCode = KeyInterop.VirtualKeyFromKey(arg.Key == Key.System ? arg.SystemKey : arg.Key),
                            NativeKeyCode  = 0,
                            IsSystemKey    = arg.Key == Key.System,
                        };

                        _browserHost.SendKeyEvent(keyEvent);
                    }
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("WpfCefBrowser: Caught exception in PreviewKeyUp()", ex);
                }

                arg.Handled = false;
            };
        }