/// <summary>
/// Initializes a new instance of the <see cref="T:iox.PowerlineBuilder"/> class.
/// </summary>
public PowerlineBuilder()
{
Builder = new StringBuilder();
lastconsole = ANSIColor.Default;
lastfg = new ANSIColor(lastconsole.GetForegroundBase());
lastbg = new ANSIColor(lastconsole.GetBackgroundBase());
first = true;
}
/// <summary>
/// Add a segment to the powerline.
/// </summary>
/// <returns>The segment.</returns>
/// <param name="text">Text.</param>
/// <param name="fg">Foreground color.</param>
/// <param name="bg">Background color.</param>
public PowerlineBuilder Segment(string text, ANSIColor fg = null, ANSIColor bg = null)
{
// $"\x1b[39m\x1b[46m iox \x1b[43m\x1b[36m{PLColor}\x1b[30m test.id \x1b[40m\x1b[33m{PLColor}\x1b[0m"
fg = fg ?? lastfg;
bg = bg ?? lastbg;
if (first)
{
lastfg = fg ?? lastfg;
lastbg = bg ?? lastbg;
}
if (!first)
{
Builder.Append($"{bg.bg}{lastbg.fg}{PLColor}");
}
Builder.Append($"{bg.bg}{fg.fg} {text}");
lastfg = fg;
lastbg = bg;
if (first)
{
first = false;
}
return(this);
}
public static string ReadHintedLine <T, TResult> (IEnumerable <T> hintSource, Func <T, TResult> hintField, ANSIColor hintColor, string inputRegex = ".*")
{
ConsoleKeyInfo input;
var editComplete = true;
var accum = string.Empty;
var lastWord = string.Empty;
var userInput = string.Empty;
var suggestion = string.Empty;
var initialCursorTop = Console.CursorTop;
var initialCursorLeft = Console.CursorLeft;
var lastInitialCursorTop = Console.CursorTop;
var lastInitialCursorLeft = Console.CursorLeft;
var localInitialCursorTop = Console.CursorTop;
var localInitialCursorLeft = Console.CursorLeft;
#if DEBUG
var __DEBUG_TRD = new System.Threading.Thread(() => {
while (true)
{
Console.Title = ($"ACCUM: {accum} | USRIN: {userInput}");
System.Threading.Thread.Sleep(100);
}
});
__DEBUG_TRD.Start();
#endif
// Read next key
while (ConsoleKey.Enter != (input = Console.ReadKey(intercept: true)).Key)
{
// Prepare state
if (editComplete)
{
lastWord = string.Empty;
userInput = string.Empty;
suggestion = string.Empty;
editComplete = false;
lastInitialCursorTop = localInitialCursorTop;
lastInitialCursorLeft = localInitialCursorLeft;
localInitialCursorTop = Console.CursorTop;
localInitialCursorLeft = Console.CursorLeft;
}
// Handle backspace
if (input.Key == ConsoleKey.Backspace)
{
if (userInput.Any())
{
userInput = userInput.Any() ? userInput.Remove(userInput.Length - 1, 1) : string.Empty;
}
else
{
accum = accum.Remove(Math.Max(0, accum.Length - 1), accum.Length > 0 ? 1 : 0);
editComplete = true;
// Clear line
Console.SetCursorPosition(initialCursorLeft, initialCursorTop);
Console.Write(string.Empty.PadLeft(Console.WindowWidth - initialCursorLeft));
Console.SetCursorPosition(initialCursorLeft, initialCursorTop);
// Write finished line
Console.Write(accum);
continue;
}
}
// Handle member access
else if (input.Key == ConsoleKey.OemPeriod)
{
editComplete = true;
userInput += input.KeyChar;
}
// Handle space
else if (input.Key == ConsoleKey.Spacebar)
{
editComplete = true;
userInput += input.KeyChar;
}
// Handle tab (accept suggestion)
else if (input.Key == ConsoleKey.Tab)
{
editComplete = true;
userInput = suggestion ?? userInput;
}
// Test if keychar is not alphanumeric
else if (!char.IsLetterOrDigit(input.KeyChar))
{
editComplete = true;
userInput += input.KeyChar;
}
// Test if keychar matches input regex
else if (Regex.IsMatch(input.KeyChar.ToString(), inputRegex))
{
Console.CursorLeft++;
userInput += input.KeyChar;
}
// Get the suggestion
suggestion = (
hintSource.Select(item => hintField(item).ToString())
.FirstOrDefault(
item => (
item.Length > userInput.Length &&
item.Substring(0, userInput.Length) == userInput
)
)
);
// Get line
lastWord = suggestion ?? userInput;
// Clear line
Console.SetCursorPosition(localInitialCursorLeft, localInitialCursorTop);
Console.Write(string.Empty.PadLeft(Console.WindowWidth - localInitialCursorLeft));
Console.SetCursorPosition(localInitialCursorLeft, localInitialCursorTop);
// Write user input
ANSI.Write($"{(suggestion != null ? White : Default)}{userInput}");
// Write suggestion
if (userInput.Any())
{
ANSI.Write($"{hintColor}{lastWord.Substring (userInput.Length, lastWord.Length - userInput.Length)}");
if (editComplete)
{
// Clear line
Console.SetCursorPosition(initialCursorLeft, initialCursorTop);
Console.Write(string.Empty.PadLeft(Console.WindowWidth - initialCursorLeft));
Console.SetCursorPosition(initialCursorLeft, initialCursorTop);
// Write finished line
accum += lastWord;
Console.Write(accum);
}
}
continue;
}
if (!editComplete)
{
accum += userInput;
}
// Clear line
Console.SetCursorPosition(initialCursorLeft, initialCursorTop);
Console.Write(string.Empty.PadLeft(Console.WindowWidth - initialCursorLeft));
Console.SetCursorPosition(initialCursorLeft, initialCursorTop);
// Write finished line
Console.WriteLine(accum);
#if DEBUG
__DEBUG_TRD.Abort();
#endif
// Return read line
return(accum);
}
