private void InitializeHistory(LowLevelToAbstractConsoleAdapter adapter)
{
var keyMap = new Dictionary<ConsoleKey, Func<HistoryEntry>>
{
{ ConsoleKey.UpArrow, () => _history.GetNextEntry() },
{ ConsoleKey.DownArrow, () => _history.GetPreviousEntry() }
};
adapter.KeyStrokes
.Select(keyInfo => keyInfo.Key)
.Where(key => key == ConsoleKey.UpArrow || key == ConsoleKey.DownArrow)
.Select(key => keyMap[key])
.Subscribe(func =>
{
adapter.EraseCurrentLine();
var historyEntry = func();
if (historyEntry != null)
{
adapter.Write(historyEntry.Value);
}
});
}
public void ErasesCurrentLineAndResetsCursor()
{
var inputSequence = "Hello".ToInputSequence();
var lowLevelConsole = new LowLevelTestConsole(inputSequence);
var adapter = new LowLevelToAbstractConsoleAdapter(lowLevelConsole) { Prompt = "(S) " };
adapter.ReadUntilSequenceIsOver(inputSequence);
Assert.AreEqual("(S) Hello", lowLevelConsole.ReadInLineFromTo(0, 0, 8));
Assert.AreEqual(9, lowLevelConsole.CursorLeft);
adapter.EraseCurrentLine();
Assert.AreEqual("(S) ", lowLevelConsole.ReadInLineFromTo(0, 0, 8));
Assert.AreEqual(4, lowLevelConsole.CursorLeft);
}