Software/Visual_Studio/Tango.Touch/Keyboard/TouchKeyboard.cs


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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace Tango.SharedUI.Converters
{
    public class StringToWordsConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return value.ToString().ToWords();
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using Forms = System.Windows.Forms;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tango.Core.Commands;
using System.Threading;
using System.Collections.ObjectModel;
using System.Media;
using Tango.Core.Helpers;
using Tango.Core.EventArguments;
using System.Windows.Controls.Primitives;
using Tango.Touch.Controls;
using System.Diagnostics;

namespace Tango.Touch.Keyboard
{
    public class TouchKeyboard : Control
    {
        private SoundPlayer _soundPlayer;
        private Thumb _jogging_thumb;
        private RadialGradientBrush _jogging_brush;

        //The system keyboard event.
        [System.Runtime.InteropServices.DllImport("user32.dll", SetLastError = true)]
        static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);
        public const int KEYEVENTF_EXTENDEDKEY = 0x0001; //Key down flag
        public const int KEYEVENTF_KEYUP = 0x0002; //Key up flag
        public const int VK_CONTROL = 0xA3; //Control key code
        private double _jog_start_value;
        private double _last_drag_delta;
        private IValueControl _jog_control;

        static TouchKeyboard()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(TouchKeyboard), new FrameworkPropertyMetadata(typeof(TouchKeyboard)));
        }

        private bool _isInitialized;

        public event EventHandler<KeyboardActionKeyMode> ActionKeyPressed;
        public event EventHandler<String> KeyPressed;

        public bool IsSpecialCharactersOn
        {
            get { return (bool)GetValue(IsSpecialCharactersOnProperty); }
            set { SetValue(IsSpecialCharactersOnProperty, value); }
        }
        public static readonly DependencyProperty IsSpecialCharactersOnProperty =
            DependencyProperty.Register("IsSpecialCharactersOn", typeof(bool), typeof(TouchKeyboard), new PropertyMetadata(false, (d, e) => (d as TouchKeyboard).OnSpecialCharactersOnChanged()));

        public TouchKeyboardMode Mode
        {
            get { return (TouchKeyboardMode)GetValue(ModeProperty); }
            set { SetValue(ModeProperty, value); }
        }
        public static readonly DependencyProperty ModeProperty =
            DependencyProperty.Register("Mode", typeof(TouchKeyboardMode), typeof(TouchKeyboard), new PropertyMetadata(TouchKeyboardMode.AlphaNumeric));

        public KeyboardActionKeyMode ActionKeyMode
        {
            get { return (KeyboardActionKeyMode)GetValue(ActionKeyModeProperty); }
            set { SetValue(ActionKeyModeProperty, value); }
        }
        public static readonly DependencyProperty ActionKeyModeProperty =
            DependencyProperty.Register("ActionKeyMode", typeof(KeyboardActionKeyMode), typeof(TouchKeyboard), new PropertyMetadata(KeyboardActionKeyMode.Next, (d, e) => (d as TouchKeyboard).OnActionKeyModeChanged()));

        public String ActionKeyText
        {
            get { return (String)GetValue(ActionKeyTextProperty); }
            private set { SetValue(ActionKeyTextProperty, value); }
        }
        public static readonly DependencyProperty ActionKeyTextProperty =
            DependencyProperty.Register("ActionKeyText", typeof(String), typeof(TouchKeyboard), new PropertyMetadata(null));

        public KeyboardDefinition CurrentKeyboardDefinition
        {
            get { return (KeyboardDefinition)GetValue(CurrentKeyboardDefinitionProperty); }
            set { SetValue(CurrentKeyboardDefinitionProperty, value); }
        }
        public static readonly DependencyProperty CurrentKeyboardDefinitionProperty =
            DependencyProperty.Register("CurrentKeyboardDefinition", typeof(KeyboardDefinition), typeof(TouchKeyboard), new PropertyMetadata(null));

        public int CurrentKeyboardDefinitionIndex
        {
            get { return (int)GetValue(CurrentKeyboardDefinitionIndexProperty); }
            set { SetValue(CurrentKeyboardDefinitionIndexProperty, value); }
        }
        public static readonly DependencyProperty CurrentKeyboardDefinitionIndexProperty =
            DependencyProperty.Register("CurrentKeyboardDefinitionIndex", typeof(int), typeof(TouchKeyboard), new PropertyMetadata(0));

        public ObservableCollection<KeyboardDefinition> KeyboardDefinitions
        {
            get { return (ObservableCollection<KeyboardDefinition>)GetValue(KeyboardDefinitionsProperty); }
            set { SetValue(KeyboardDefinitionsProperty, value); }
        }
        public static readonly DependencyProperty KeyboardDefinitionsProperty =
            DependencyProperty.Register("KeyboardDefinitions", typeof(ObservableCollection<KeyboardDefinition>), typeof(TouchKeyboard), new PropertyMetadata(null));

        public Size KeySize
        {
            get { return (Size)GetValue(KeySizeProperty); }
            set { SetValue(KeySizeProperty, value); }
        }
        public static readonly DependencyProperty KeySizeProperty =
            DependencyProperty.Register("KeySize", typeof(Size), typeof(TouchKeyboard), new PropertyMetadata(Size.Empty));

        public double MaxSpecialKeyWidth
        {
            get { return (double)GetValue(MaxSpecialKeyWidthProperty); }
            set { SetValue(MaxSpecialKeyWidthProperty, value); }
        }
        public static readonly DependencyProperty MaxSpecialKeyWidthProperty =
            DependencyProperty.Register("MaxSpecialKeyWidth", typeof(double), typeof(TouchKeyboard), new PropertyMetadata(0.0));

        public KeysLineDefinition NumbersLineDefinition
        {
            get { return (KeysLineDefinition)GetValue(NumbersLineDefinitionProperty); }
            set { SetValue(NumbersLineDefinitionProperty, value); }
        }
        public static readonly DependencyProperty NumbersLineDefinitionProperty =
            DependencyProperty.Register("NumbersLineDefinition", typeof(KeysLineDefinition), typeof(TouchKeyboard), new PropertyMetadata(null));

        public Brush CharactersBackground
        {
            get { return (Brush)GetValue(CharactersBackgroundProperty); }
            set { SetValue(CharactersBackgroundProperty, value); }
        }
        public static readonly DependencyProperty CharactersBackgroundProperty =
            DependencyProperty.Register("CharactersBackground", typeof(Brush), typeof(TouchKeyboard), new PropertyMetadata(Brushes.Gainsboro));

        public Brush CharactersForeground
        {
            get { return (Brush)GetValue(CharactersForegroundProperty); }
            set { SetValue(CharactersForegroundProperty, value); }
        }
        public static readonly DependencyProperty CharactersForegroundProperty =
            DependencyProperty.Register("CharactersForeground", typeof(Brush), typeof(TouchKeyboard), new PropertyMetadata(new SolidColorBrush(Color.FromRgb(20, 20, 20))));

        public Brush SpecialCharactersBackground
        {
            get { return (Brush)GetValue(SpecialCharactersBackgroundProperty); }
            set { SetValue(SpecialCharactersBackgroundProperty, value); }
        }
        public static readonly DependencyProperty SpecialCharactersBackgroundProperty =
            DependencyProperty.Register("SpecialCharactersBackground", typeof(Brush), typeof(TouchKeyboard), new PropertyMetadata(Brushes.Gray));

        public Brush SpecialCharactersForeground
        {
            get { return (Brush)GetValue(SpecialCharactersForegroundProperty); }
            set { SetValue(SpecialCharactersForegroundProperty, value); }
        }
        public static readonly DependencyProperty SpecialCharactersForegroundProperty =
            DependencyProperty.Register("SpecialCharactersForeground", typeof(Brush), typeof(TouchKeyboard), new PropertyMetadata(Brushes.Gainsboro));

        public double VectorMarkupSize
        {
            get { return (double)GetValue(VectorMarkupSizeProperty); }
            set { SetValue(VectorMarkupSizeProperty, value); }
        }
        public static readonly DependencyProperty VectorMarkupSizeProperty =
            DependencyProperty.Register("VectorMarkupSize", typeof(double), typeof(TouchKeyboard), new PropertyMetadata(10.0));

        public double DotsSize
        {
            get { return (double)GetValue(DotsSizeProperty); }
            set { SetValue(DotsSizeProperty, value); }
        }
        public static readonly DependencyProperty DotsSizeProperty =
            DependencyProperty.Register("DotsSize", typeof(double), typeof(TouchKeyboard), new PropertyMetadata(5.0));

        public double CharactersCornerRadius
        {
            get { return (double)GetValue(CharactersCornerRadiusProperty); }
            set { SetValue(CharactersCornerRadiusProperty, value); }
        }
        public static readonly DependencyProperty CharactersCornerRadiusProperty =
            DependencyProperty.Register("CharactersCornerRadius", typeof(double), typeof(TouchKeyboard), new PropertyMetadata(5.0));

        public CapsLockMode CapsLockMode
        {
            get { return (CapsLockMode)GetValue(CapsLockModeProperty); }
            set { SetValue(CapsLockModeProperty, value); }
        }
        public static readonly DependencyProperty CapsLockModeProperty =
            DependencyProperty.Register("CapsLockMode", typeof(CapsLockMode), typeof(TouchKeyboard), new PropertyMetadata(CapsLockMode.None));

        public bool IsCapsLockOn
        {
            get { return (bool)GetValue(IsCapsLockOnProperty); }
            private set { SetValue(IsCapsLockOnProperty, value); }
        }
        public static readonly DependencyProperty IsCapsLockOnProperty =
            DependencyProperty.Register("IsCapsLockOn", typeof(bool), typeof(TouchKeyboard), new PropertyMetadata(false));

        public RelayCommand<KeyDefinition> KeyDefinitionCommand
        {
            get { return (RelayCommand<KeyDefinition>)GetValue(KeyDefinitionCommandProperty); }
            set { SetValue(KeyDefinitionCommandProperty, value); }
        }
        public static readonly DependencyProperty KeyDefinitionCommandProperty =
            DependencyProperty.Register("KeyDefinitionCommand", typeof(RelayCommand<KeyDefinition>), typeof(TouchKeyboard), new PropertyMetadata(null));

        public RelayCommand<SpecialKeyDefinition> SpecialKeyDefinitionCommand
        {
            get { return (RelayCommand<SpecialKeyDefinition>)GetValue(SpecialKeyDefinitionCommandProperty); }
            set { SetValue(SpecialKeyDefinitionCommandProperty, value); }
        }
        public static readonly DependencyProperty SpecialKeyDefinitionCommandProperty =
            DependencyProperty.Register("SpecialKeyDefinitionCommand", typeof(RelayCommand<SpecialKeyDefinition>), typeof(TouchKeyboard), new PropertyMetadata(null));

        public RelayCommand SpecialCharactersCommand
        {
            get { return (RelayCommand)GetValue(SpecialCharactersCommandProperty); }
            set { SetValue(SpecialCharactersCommandProperty, value); }
        }
        public static readonly DependencyProperty SpecialCharactersCommandProperty =
            DependencyProperty.Register("SpecialCharactersCommand", typeof(RelayCommand), typeof(TouchKeyboard), new PropertyMetadata(null));

        public RelayCommand<String> FreeTextCommand
        {
            get { return (RelayCommand<String>)GetValue(FreeTextCommandProperty); }
            set { SetValue(FreeTextCommandProperty, value); }
        }
        public static readonly DependencyProperty FreeTextCommandProperty =
            DependencyProperty.Register("FreeTextCommand", typeof(RelayCommand<String>), typeof(TouchKeyboard), new PropertyMetadata(null));

        public RelayCommand NextLanguageCommand
        {
            get { return (RelayCommand)GetValue(NextLanguageCommandProperty); }
            set { SetValue(NextLanguageCommandProperty, value); }
        }
        public static readonly DependencyProperty NextLanguageCommandProperty =
            DependencyProperty.Register("NextLanguageCommand", typeof(RelayCommand), typeof(TouchKeyboard), new PropertyMetadata(null));

        public RelayCommand ActionKeyCommand
        {
            get { return (RelayCommand)GetValue(ActionKeyCommandProperty); }
            set { SetValue(ActionKeyCommandProperty, value); }
        }
        public static readonly DependencyProperty ActionKeyCommandProperty =
            DependencyProperty.Register("ActionKeyCommand", typeof(RelayCommand), typeof(TouchKeyboard), new PropertyMetadata(null));

        public RelayCommand<Object> NumericKeyCommand
        {
            get { return (RelayCommand<Object>)GetValue(NumericKeyCommandProperty); }
            set { SetValue(NumericKeyCommandProperty, value); }
        }
        public static readonly DependencyProperty NumericKeyCommandProperty =
            DependencyProperty.Register("NumericKeyCommand", typeof(RelayCommand<Object>), typeof(TouchKeyboard), new PropertyMetadata(null));


        public TouchKeyboard()
        {
            KeyboardDefinitions = new ObservableCollection<KeyboardDefinition>();
            Initialize();

            this.SizeChanged += (_, __) => SetKeySize();
            KeyDefinitionCommand = new RelayCommand<KeyDefinition>(InvokeKeyDefinition);
            SpecialKeyDefinitionCommand = new RelayCommand<SpecialKeyDefinition>(InvokeSpecialKeyDefinition);
            SpecialCharactersCommand = new RelayCommand(ToggleSpecialKeys);
            FreeTextCommand = new RelayCommand<string>((x) => SendKeys(x));
            NextLanguageCommand = new RelayCommand(NextLanguage);
            ActionKeyCommand = new RelayCommand(InvokeActionKey);
            NumericKeyCommand = new RelayCommand<object>((x) => SendKeys(x.ToString().Replace("'", "")));

            _soundPlayer = new SoundPlayer(EmbeddedResourceHelper.GetEmbeddedResourceStream("Tango.Touch.Keyboard.keyboard-iphone.wav"));
        }

        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();

            _jogging_thumb = GetTemplateChild("PART_JoggingThumb") as Thumb;
            _jogging_brush = GetTemplateChild("PART_Jog_Gradient") as RadialGradientBrush;


            _jogging_thumb.DragStarted += _jogging_thumb_DragStarted;
            _jogging_thumb.DragCompleted += _jogging_thumb_DragCompleted;
            _jogging_thumb.DragDelta += _jogging_thumb_DragDelta;

            RepeatButton btnUp = GetTemplateChild("PART_JogUp") as RepeatButton;
            RepeatButton btnDown = GetTemplateChild("PART_JogDown") as RepeatButton;

            btnUp.Click += BtnUp_Click;
            btnDown.Click += BtnDown_Click;
        }

        private void BtnDown_Click(object sender, RoutedEventArgs e)
        {
            IInputElement focusedControl = FocusManager.GetFocusedElement(Application.Current.MainWindow);

            if (focusedControl != null)
            {
                IValueControl control = (focusedControl as DependencyObject).FindAncestor<IValueControl>();

                if (control != null)
                {
                    control.Value -= 1;
                }
            }
        }

        private void BtnUp_Click(object sender, RoutedEventArgs e)
        {
            IInputElement focusedControl = FocusManager.GetFocusedElement(Application.Current.MainWindow);

            if (focusedControl != null)
            {
                IValueControl control = (focusedControl as DependencyObject).FindAncestor<IValueControl>();

                if (control != null)
                {
                    control.Value += 1;
                }
            }
        }

        private void _jogging_thumb_DragStarted(object sender, DragStartedEventArgs e)
        {
            IInputElement focusedControl = FocusManager.GetFocusedElement(Application.Current.MainWindow);

            if (focusedControl != null)
            {
                IValueControl control = (focusedControl as DependencyObject).FindAncestor<IValueControl>();

                if (control != null)
                {
                    _jog_control = control;
                    _jog_start_value = _jog_control.Value;
                }
            }
        }

        private void _jogging_thumb_DragCompleted(object sender, DragCompletedEventArgs e)
        {
            _jogging_brush.GradientOrigin = new Point(0.5, 0.5);
            _jog_start_value = 0;
            _jog_control = null;
        }

        private void _jogging_thumb_DragDelta(object sender, DragDeltaEventArgs e)
        {
            if (_jog_control != null)
            {
                double min_origin = 0.4;
                double max_origin = 0.6;

                var factor = _jog_control.Maximum / Application.Current.MainWindow.Height;

                if (_jog_control.AutoCalculateJogStep)
                {
                    _jog_control.Value = _jog_start_value + (((-e.VerticalChange) * factor) * _jog_control.JoggingFactor);
                }
                else
                {
                    _jog_control.Value = _jog_start_value + (-e.VerticalChange * _jog_control.JoggingFactor);
                }

                if (_last_drag_delta > e.VerticalChange)
                {
                    _jogging_brush.GradientOrigin = new Point(0.5, _jogging_brush.GradientOrigin.Y - 0.005);

                    if (_jogging_brush.GradientOrigin.Y < min_origin)
                    {
                        _jogging_brush.GradientOrigin = new Point(0.5, min_origin);
                    }
                }
                else if (_last_drag_delta < e.VerticalChange)
                {
                    _jogging_brush.GradientOrigin = new Point(0.5, _jogging_brush.GradientOrigin.Y + 0.005);

                    if (_jogging_brush.GradientOrigin.Y > max_origin)
                    {
                        _jogging_brush.GradientOrigin = new Point(0.5, max_origin);
                    }
                }
            }

            _last_drag_delta = e.VerticalChange;
        }

        private void Initialize()
        {
            if (!_isInitialized)
            {
                var numbers = new KeysLineDefinition();

                for (int i = 1; i < 10; i++)
                {
                    numbers.KeyDefinitions.Add(new KeyDefinition()
                    {
                        StandardText = i.ToString(),
                        CapsText = i.ToString(),
                    });
                }

                numbers.KeyDefinitions.Add(new KeyDefinition()
                {
                    StandardText = "0",
                    CapsText = "0",
                });

                NumbersLineDefinition = numbers;

                CurrentKeyboardDefinition = KeyboardDefinition.Default;
                KeyboardDefinitions.Add(CurrentKeyboardDefinition);
                //KeyboardDefinitions.Add(KeyboardDefinition.CreateDefaultHebrewAlphaNumeric());

                SetKeySize();

                OnActionKeyModeChanged();

                _isInitialized = true;
            }
        }

        private void SetKeySize()
        {
            KeySize = new Size(ActualWidth / NumbersLineDefinition.KeyDefinitions.Count, (ActualWidth / NumbersLineDefinition.KeyDefinitions.Count) * 0.90);
            MaxSpecialKeyWidth = KeySize.Width * 2;
        }

        private void InvokeKeyDefinition(KeyDefinition key)
        {
            if (IsCapsLockOn)
            {
                SendKeys(key.CapsText);
            }
            else
            {
                //UIAutomationHelper.GetActiveWindow();

                //IInputElement focusedControl = FocusManager.GetFocusedElement(this);

                SendKeys(key.StandardText);
            }
        }

        private void InvokeSpecialKeyDefinition(SpecialKeyDefinition key)
        {
            switch (key.Type)
            {
                case SpecialKeyType.StandardText:
                    SendKeys(key.Output);
                    break;
                case SpecialKeyType.CapsLock:

                    if (CapsLockMode == CapsLockMode.None)
                    {
                        CapsLockMode = CapsLockMode.SingleChar;
                    }
                    else if (CapsLockMode == CapsLockMode.SingleChar)
                    {
                        CapsLockMode = CapsLockMode.Locked;
                    }
                    else
                    {
                        CapsLockMode = CapsLockMode.None;
                    }

                    IsCapsLockOn = CapsLockMode != CapsLockMode.None;

                    break;
            }
        }

        private void SendKeys(String key)
        {
            //Application.Current.MainWindow.Activate();

            var isSpecialChar = IsSpecialCharactersOn;
            var definition = CurrentKeyboardDefinition;

            if (CapsLockMode == CapsLockMode.SingleChar)
            {
                CapsLockMode = CapsLockMode.None;
                IsCapsLockOn = false;
            }


            if (key.Length > 1 || (isSpecialChar && definition.KeysLinesDefinitions.SelectMany(x => x.KeyDefinitions).Select(x => x.StandardText).Contains(key)))
            {
                Core.Threading.ThreadFactory.StartNew(() =>
                {
                    if (key.Contains("{"))
                    {
                        Forms.SendKeys.SendWait(key);
                    }
                    else
                    {
                        Forms.SendKeys.SendWait("{" + key + "}");
                    }

                    Forms.SendKeys.Flush();
                });
            }
            else
            {
                //Forms.SendKeys.SendWait(key);

                var text = key;
                var target = FocusManager.GetFocusedElement(Application.Current.MainWindow) as UIElement;

                Key k = Key.None;
                Enum.TryParse<Key>(key, out k);

                RaiseKeyUp(target, k);

                var routedEvent = TextCompositionManager.TextInputEvent;

                target.RaiseEvent(new TextCompositionEventArgs(InputManager.Current.PrimaryKeyboardDevice,
                    new TextComposition(InputManager.Current, target, text))
                {
                    RoutedEvent = routedEvent
                }
                );
            }

            _soundPlayer.Play();
        }

        private void RaiseKeyDown(UIElement target, Key key)
        {
            target.RaiseEvent(
  new KeyEventArgs(
    System.Windows.Input.Keyboard.PrimaryDevice,
    PresentationSource.FromVisual(target),
    0,
    key)
  { RoutedEvent = System.Windows.Input.Keyboard.PreviewKeyDownEvent });

            target.RaiseEvent(
              new KeyEventArgs(
                System.Windows.Input.Keyboard.PrimaryDevice,
                PresentationSource.FromVisual(target),
                0,
                key)
              { RoutedEvent = System.Windows.Input.Keyboard.KeyDownEvent });

        }

        private void RaiseKeyUp(UIElement target, Key key)
        {
            target.RaiseEvent(
new KeyEventArgs(
System.Windows.Input.Keyboard.PrimaryDevice,
PresentationSource.FromVisual(target),
0,
key)
{ RoutedEvent = System.Windows.Input.Keyboard.PreviewKeyUpEvent });

            target.RaiseEvent(
              new KeyEventArgs(
                System.Windows.Input.Keyboard.PrimaryDevice,
                PresentationSource.FromVisual(target),
                0,
                key)
              { RoutedEvent = System.Windows.Input.Keyboard.KeyUpEvent }
            );
        }

        public static void PressCtrl()
        {
            keybd_event(VK_CONTROL, 0, KEYEVENTF_EXTENDEDKEY, 0);
        }

        public static void ReleaseCtrl()
        {
            keybd_event(VK_CONTROL, 0, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
        }

        private void OnSpecialCharactersOnChanged()
        {
            if (!IsSpecialCharactersOn)
            {
                CurrentKeyboardDefinition = KeyboardDefinitions[CurrentKeyboardDefinitionIndex];
            }
            else
            {
                KeyboardDefinition definition = new KeyboardDefinition();
                definition.EnterText = CurrentKeyboardDefinition.EnterText;
                definition.KeysLinesDefinitions = KeyboardDefinition.CreateDefaultSpecialCharacters();
                CurrentKeyboardDefinition = definition;
            }
        }

        private void ToggleSpecialKeys()
        {
            IsSpecialCharactersOn = !IsSpecialCharactersOn;
        }

        private void NextLanguage()
        {
            IsCapsLockOn = false;

            CurrentKeyboardDefinitionIndex++;

            if (CurrentKeyboardDefinitionIndex > KeyboardDefinitions.Count - 1)
            {
                CurrentKeyboardDefinitionIndex = 0;
            }

            CurrentKeyboardDefinition = KeyboardDefinitions[CurrentKeyboardDefinitionIndex];

            OnActionKeyModeChanged();
        }

        private void OnActionKeyModeChanged()
        {
            switch (ActionKeyMode)
            {
                case KeyboardActionKeyMode.Go:
                    ActionKeyText = CurrentKeyboardDefinition.EnterText;
                    break;
                case KeyboardActionKeyMode.Return:
                    ActionKeyText = "↵";
                    break;
                case KeyboardActionKeyMode.Next:
                    ActionKeyText = CurrentKeyboardDefinition.TabText;
                    break;
                case KeyboardActionKeyMode.Search:
                    ActionKeyText = "Search"; // TODO: Make trigger in view and vector path.
                    break;
            }
        }

        private void InvokeActionKey()
        {
            switch (ActionKeyMode)
            {
                case KeyboardActionKeyMode.Search:
                case KeyboardActionKeyMode.Return:
                case KeyboardActionKeyMode.Go:
                    SendKeys("{ENTER}");
                    break;
                case KeyboardActionKeyMode.Next:
                    SendKeys("{TAB}");
                    break;
            }

            ActionKeyPressed?.Invoke(this, ActionKeyMode);
        }
    }
}