/// <summary>
/// Sends key strokes to the provided viewmodel.
/// If the input would cause the intellisense window to
/// trigger, the intellisense callback is invoked.
/// </summary>
/// <param name="keyStrokes">A FormattableString (not a string!) that contains keystrokes</param>
/// <param name="vm">window view model</param>
/// <param name="intellisenseCallback"></param>
/// <returns></returns>
private async Task TypeInput(FormattableString keyStrokes, WindowViewModel vm, TriggerIntellisense intellisenseCallback = null)
{
var device = new MockKeyboardDevice(InputManager.Current);
ModifierKeys modifier = ModifierKeys.None;
foreach (var stroke in ConvertToKeys(keyStrokes))
{
var currentLine = vm.Entries[vm.FocusIndex];
// set up document state; in the real app this is done by databinding
if (currentLine.Document is null)
{
var editor = new TextEditor {
Document = new TextDocument()
};
currentLine.Document ??= editor.Document;
currentLine.SetEditor(editor);
currentLine.TriggerIntellisense ??= intellisenseCallback ?? ((items) => { });
}
// convert to input to the appropriate key press
Key key;
switch (stroke)
{
case char ch: // type the character into the editor and set up the key event
currentLine.Document.Text += ch;
currentLine.CaretOffset = currentLine.Document.Text.Length;
key = CharToKey.ContainsKey(ch)
? CharToKey[ch]
: (Key)keyConverter.ConvertFromString(ch.ToString());
break;
case Key k:
key = k;
break;
case ModifierKeys mod:
modifier |= mod;
continue;
default:
throw new InvalidOperationException("Unhandled type: " + stroke.GetType());
}
device.ModifierKeysImpl = modifier;
var keyDown = device.CreateKeyEventArgs(key, Keyboard.KeyDownEvent);
await viewModelService.HandleKeyDown(vm, currentLine, keyDown);
var keyUp = device.CreateKeyEventArgs(key, Keyboard.KeyUpEvent);
await viewModelService.HandleKeyUp(vm, currentLine, keyUp);
modifier = ModifierKeys.None;
}
}
private async Task TypeInput(string input, WindowViewModel vm, TriggerIntellisense callback = null)
{
var keyboard = Keyboard.PrimaryDevice;
var source = Substitute.For <PresentationSource>();
foreach (var character in ConvertToKeys(input))
{
var currentLine = vm.Entries[vm.FocusIndex];
if (currentLine.Document is null)
{
// this would normally be done by databinding
var editor = new TextEditor {
Document = new TextDocument()
};
currentLine.Document ??= editor.Document;
currentLine.SetEditor(editor);
currentLine.TriggerIntellisense ??= callback ?? ((items, onClose) => { });
}
// convert a character like '.' to OemPeriod
Key key = CharToKey.ContainsKey(character)
? CharToKey[character]
: (Key)keyConverter.ConvertFromString(character);
// type the key
if (!NoOutputKeys.Contains(key))
{
currentLine.Document.Text += character;
}
currentLine.CaretOffset = currentLine.Document.Text.Length;
var keyDown = new KeyEventArgs(keyboard, source, 0, key)
{
RoutedEvent = Keyboard.KeyDownEvent
};
await viewModelService.HandleKeyDown(vm, currentLine, keyDown);
var keyUp = new KeyEventArgs(keyboard, source, 0, key)
{
RoutedEvent = Keyboard.KeyUpEvent
};
await viewModelService.HandleKeyUp(vm, currentLine, keyUp);
}
}
private async void TextEditor_PreviewKeyDown(TextEditor lineEditor, KeyEventArgs e)
{
await viewModelService.HandleKeyDown(Model, lineEditor.ViewModel(), e);
}