private async Task <bool> OnSearchHistoryAsync(ConsoleImproved prompt, ConsoleKeyEx key)
{
int oldPos = implementation.CursorTop;
implementation.CursorLeft = 0;
implementation.CursorTop = implementation.WindowHeight - 2;
// create fake shell object with a custom prompt
var fakeShell = new Dotnet.Shell.API.Shell();
fakeShell.History.AddRange(shell.History);
fakeShell.Prompt = () =>
{
RenderSearchChanges();
// Search) user search text
// [1/3]: matched entry
return("Search) ");
};
ci = new ConsoleImproved(implementation, fakeShell);
ci.KeyOverrides.Where(x => x.Key.Key == ConsoleKey.UpArrow).ToList().ForEach(x => ci.KeyOverrides.Remove(x));
ci.KeyOverrides.Where(x => x.Key.Key == ConsoleKey.DownArrow).ToList().ForEach(x => ci.KeyOverrides.Remove(x));
ci.AddKeyOverride(ConsoleKeyEx.Any, OnSearchTextEnteredAsync);
ci.AddKeyOverride(new ConsoleKeyEx(ConsoleKey.UpArrow), OnChangeSearchEntryAsync);
ci.AddKeyOverride(new ConsoleKeyEx(ConsoleKey.DownArrow), OnChangeSearchEntryAsync);
ci.AddKeyOverride(new ConsoleKeyEx(ConsoleKey.Enter), OnSelectSearchEntryAsync);
ci.DisplayPrompt();
// When the prompt returns, instead of executing the command we just set that
// as what to show on screen
var command = await ci.GetCommandAsync();
implementation.CursorTop = implementation.WindowHeight - 2;
implementation.Write(new string(' ', implementation.WindowWidth));
implementation.CursorTop = implementation.WindowHeight - 1;
implementation.Write(new string(' ', implementation.WindowWidth));
implementation.CursorTop = oldPos;
implementation.Write(new string(' ', implementation.WindowWidth));
prompt.DisplayPrompt(command);
return(false);
}
public async Task MultiLineBackspaceAsync()
{
using (var ms = new MemoryStream())
{
var fakeShell = new Shell();
fakeShell.CommandHandlers.Add((cmd) => { Assert.IsTrue(string.IsNullOrWhiteSpace(cmd)); return(cmd); });
fakeShell.Prompt = () => { return(new ColorString("# > ", "# > ")); };
var mockConsole = new MockConsole()
{
WindowWidth = 12,
};
var console = new ConsoleImproved(mockConsole, fakeShell);
int lastPos = 0;
console.AddKeyOverride(ConsoleKeyEx.Any, (console, key) =>
{
if (key.Key == ConsoleKey.Backspace)
{
// This makes sure that after every character the position variable is correctly incremented by 1
lastPos--;
Assert.AreEqual(console.UserEnteredText.Length, console.UserEnteredTextPosition);
Assert.AreEqual(lastPos, console.UserEnteredTextPosition);
}
else if (key.Key != ConsoleKey.Enter)
{
lastPos++;
}
return(Task <bool> .FromResult(false));
});
console.DisplayPrompt();
foreach (var character in new[] { ConsoleKey.A, ConsoleKey.B, ConsoleKey.C, ConsoleKey.D, ConsoleKey.E, ConsoleKey.F, ConsoleKey.G })
{
for (int x = 0; x < 3; x++)
{
mockConsole.keys.Enqueue(new ConsoleKeyEx(character));
}
}
foreach (var character in new[] { ConsoleKey.A, ConsoleKey.B, ConsoleKey.C, ConsoleKey.D, ConsoleKey.E, ConsoleKey.F, ConsoleKey.G })
{
for (int x = 0; x < 3; x++)
{
mockConsole.keys.Enqueue(new ConsoleKeyEx(ConsoleKey.Backspace));
}
}
mockConsole.keys.Enqueue(new ConsoleKeyEx(ConsoleKey.Enter));
var command = await console.GetCommandAsync(CancellationToken.None);
Assert.IsTrue(string.IsNullOrWhiteSpace(command));
}
}
public async Task MultiLineArrowKeysAsync()
{
using (var ms = new MemoryStream())
{
var input = "aaabbbcccdddeeefffggg";
var fakeShell = new Shell();
fakeShell.CommandHandlers.Add((cmd) => { Assert.AreEqual(input, cmd); return(cmd); });
fakeShell.Prompt = () => { return(new ColorString("# > ", "# > ")); };
var mockConsole = new MockConsole()
{
WindowWidth = 12,
};
var console = new ConsoleImproved(mockConsole, fakeShell);
int pos = 0;
console.AddKeyOverride(ConsoleKeyEx.Any, (console, key) =>
{
if (key.Key == ConsoleKey.LeftArrow)
{
pos--;
}
else if (key.Key == ConsoleKey.RightArrow || key.Key != ConsoleKey.Enter)
{
pos++;
}
Assert.AreEqual(pos, console.UserEnteredTextPosition);
return(Task <bool> .FromResult(false));
});
console.DisplayPrompt();
foreach (var character in new[] { ConsoleKey.A, ConsoleKey.B, ConsoleKey.C, ConsoleKey.D, ConsoleKey.E, ConsoleKey.F, ConsoleKey.G })
{
for (int x = 0; x < 3; x++)
{
mockConsole.keys.Enqueue(new ConsoleKeyEx(character));
}
}
for (int x = 0; x < input.Length; x++)
{
mockConsole.keys.Enqueue(new ConsoleKeyEx(ConsoleKey.LeftArrow));
}
for (int x = 0; x < input.Length; x++)
{
mockConsole.keys.Enqueue(new ConsoleKeyEx(ConsoleKey.RightArrow));
}
mockConsole.keys.Enqueue(new ConsoleKeyEx(ConsoleKey.Enter));
var command = await console.GetCommandAsync(CancellationToken.None);
}
}
public async Task AddKeyOverrideAsync()
{
using (var ms = new MemoryStream())
{
var fakeShell = new Shell();
var mockConsole = new MockConsole();
var console = new ConsoleImproved(mockConsole, fakeShell);
int handlerCalled = 0;
console.AddKeyOverride(new ConsoleKeyEx(ConsoleKey.Tab), (a, b) => { handlerCalled++; return(Task <bool> .FromResult(false)); });
mockConsole.keys.Enqueue(new ConsoleKeyEx(ConsoleKey.A));
mockConsole.keys.Enqueue(new ConsoleKeyEx(ConsoleKey.Tab));
mockConsole.keys.Enqueue(new ConsoleKeyEx(ConsoleKey.Enter));
var key = await console.GetCommandAsync(CancellationToken.None);
Assert.AreEqual("a", key);
Assert.AreEqual(1, handlerCalled);
}
}