protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
        {
            if (Model != null)
                Model.IsActive = true;

            base.OnGotKeyboardFocus(e);
        }

 protected override void OnLostKeyboardFocus(KeyboardFocusChangedEventArgs e)
 {
     txtReadOnly.Visibility = Visibility.Visible;
     txtEdit.Visibility = Visibility.Collapsed;
     Text = EditedText;
     base.OnLostKeyboardFocus(e);
 }

 private void projectTextBox_OnLostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (!string.IsNullOrEmpty(this.selectedProject.ProjectLabel))
     {
         this.selectProject(this.selectedProject);
     }
 }

 private void Window_LostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (!closing)
     {
         this.Close();
     }
 }

 private void ValidDateTextBox_PreviewLostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (HasError)
     {
         e.Handled = true;
     }
 }

 protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
 {
     if (this.IsKeyboardFocusWithin)
     {
         this.lastElementWithFocus = e.NewFocus as FrameworkElement;
     }
 }

 protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
 {
   if ((e.OldFocus is DataGridCell)) return;
   Keyboard.Focus(_lastDataGridFocus);
   if (SelectedIndex == -1 && Items.Count > 0) SelectedIndex = 0;
   e.Handled = true;
 }

 private void tbName_GotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (tbName.Text == "Имя")
     {
         tbName.Text = "";
     }
 }

        protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
        {
            if (SelectAllOnGotFocus)
                SelectAll();

            base.OnGotKeyboardFocus(e);
        }

 private void txtMyProfile_GotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (txtMyProfile.Text == DefaultTextMySteamProfile)
     {
         txtMyProfile.Clear();
     }
 }

 void OnKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (e.NewFocus == this)
     {
         terminalControl.Focus();
         Keyboard.Focus(terminalControl);
     }
 }

		/// Forward focus to TextArea.
		/// <inheritdoc/>
		protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
		{
			base.OnGotKeyboardFocus(e);
			if (e.NewFocus == this) {
				Keyboard.Focus(this.TextArea);
				e.Handled = true;
			}
		}

 private void OnGotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (e.OldFocus is MenuItem)
     {
         return;
     }
     SelectTextInTextBox(sender);
 }

 protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
 {
     base.OnGotKeyboardFocus(e);
     if (this.SelectedIndex == -1)
     {
         this.SelectedIndex = 0;
     }
 }

		protected override void OnLostKeyboardFocus(KeyboardFocusChangedEventArgs e)
		{
			base.OnLostKeyboardFocus(e);
			if (IsKeyboardFocusWithin)
				return;
			if (IsOpen)
				Child.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
		}

 private void Editor_LostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (_drawFocus)
     {
         _drawFocus = false;
         InvalidateVisual();
     }
 }

 private void Editor_GotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
 {
     if (!_drawFocus)
     {
         _drawFocus = true;
         InvalidateVisual();
     }
 }

 protected override void OnPreviewGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
 {
     if (!this.IsRootDesigner)
     {
         this.Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, new Action(this.BringToFront));
     }
     base.OnPreviewGotKeyboardFocus(e);
 }

        private static void TextboxOnGotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs keyboardFocusChangedEventArgs)
        {
            var textbox = sender as TextBox;
            if (textbox == null) return;

            textbox.CaretIndex = textbox.Text.Length;
            textbox.ScrollToEnd();
        }

		/// Forward focus to TextArea.
		/// <inheritdoc/>
		protected override void OnGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
		{
			base.OnGotKeyboardFocus(e);
			if (!this.TextArea.IsKeyboardFocusWithin) {
				Keyboard.Focus(this.TextArea);
				e.Handled = true;
			}
		}