/// <summary>
/// Initialize a dialog
/// </summary>
/// <param name="m">Message to show</param>
/// <param name="btns">List of captions for buttons</param>
/// <param name="hdr">Function to generate the header</param>
/// <param name="ta">Alignment of the contents</param>
/// <param name="vertOffset">Pass non-zero to move popup vertically</param>
public ConsoleMessageDialog(string m, List <string> btns, Func <string> hdr = null, TextAlign ta = TextAlign.Center, int vertOffset = 0)
: base()
{
int maxLen = Formatting.MaxLineLength(m);
int w = Math.Max(minWidth, Math.Min(maxLen + 6, Console.WindowWidth - 4));
int l = (Console.WindowWidth - w) / 2;
int r = -l;
if (hdr != null)
{
CenterHeader = hdr;
}
int btnW = btns.Count * buttonWidth + (btns.Count - 1) * buttonPadding;
if (w < btnW + 4)
{
// Widen the window to fit the buttons
// Buttons will NOT wrap - use ConsoleChoiceDialog
// if you have many large options.
w = btnW + 4;
l = (Console.WindowWidth - w) / 2;
r = Console.WindowWidth - l;
}
List <string> messageLines = Formatting.WordWrap(m, w - 4);
int h = 2 + messageLines.Count + (btns.Count > 0 ? 2 : 0) + 2;
if (h > Console.WindowHeight - 4)
{
h = Console.WindowHeight - 4;
}
// Calculate vertical position including offset
int t, b;
if (vertOffset <= 0)
{
t = (Console.WindowHeight - h) / 2 + vertOffset;
if (t < 1)
{
t = 2;
}
b = t + h - 1;
}
else
{
b = (Console.WindowHeight - h) / 2 + h - 1;
if (b >= Console.WindowHeight - 1)
{
b = Console.WindowHeight - 1;
}
t = b - h + 1;
}
SetDimensions(l, t, r, b);
int btnRow = GetBottom() - 2;
ConsoleTextBox tb = new ConsoleTextBox(
GetLeft() + 2, GetTop() + 2, GetRight() - 2, GetBottom() - 2 - (btns.Count > 0 ? 2 : 0),
false,
ta,
() => ConsoleTheme.Current.PopupBg,
() => ConsoleTheme.Current.PopupFg
);
AddObject(tb);
tb.AddLine(m);
int boxH = GetBottom() - 2 - (btns.Count > 0 ? 2 : 0) - (GetTop() + 2) + 1;
if (messageLines.Count > boxH)
{
// Scroll
AddTip("Cursor keys", "Scroll");
tb.AddScrollBindings(this);
}
int btnLeft = (Console.WindowWidth - btnW) / 2;
for (int i = 0; i < btns.Count; ++i)
{
string cap = btns[i];
int j = i;
AddObject(new ConsoleButton(btnLeft, btnRow, btnLeft + buttonWidth - 1, cap, () => {
selectedButton = j;
Quit();
}));
btnLeft += buttonWidth + buttonPadding;
}
}
/// <returns>
/// Y coordinate of bottom edge of dialog
/// </returns>
protected int GetBottom()
{
return(Formatting.ConvertCoord(bottom, Console.WindowHeight));
}
/// <returns>
/// X coordinate of right edge of dialog
/// </returns>
protected int GetRight()
{
return(Formatting.ConvertCoord(right, Console.WindowWidth));
}
/// <returns>
/// Y coordinate of top edge of dialog
/// </returns>
protected int GetTop()
{
return(Formatting.ConvertCoord(top, Console.WindowHeight));
}
/// <returns>
/// X coordinate of left edge of dialog
/// </returns>
protected int GetLeft()
{
return(Formatting.ConvertCoord(left, Console.WindowWidth));
}
private void Draw(ConsoleTheme theme, int right, int top)
{
if (options.Count > 0)
{
right = Formatting.ConvertCoord(right, Console.WindowWidth);
top = Formatting.ConvertCoord(top, Console.WindowHeight);
Console.CursorVisible = false;
// Space, vertical line, space, options, space, vertical line, space
int w = longestLength + 6;
// Horizontal lines before and after the options
int h = options.Count + 2;
Console.BackgroundColor = theme.MenuBg;
Console.ForegroundColor = theme.MenuFg;
string fullHorizLine = new string(Symbols.horizLine, longestLength + 2);
for (int index = -1, y = top; y < top + h; ++index, ++y)
{
Console.SetCursorPosition(right - w + 1, y);
// Left padding
Console.Write(" ");
if (index < 0)
{
// Draw top line
Console.Write(Symbols.upperLeftCorner + fullHorizLine + Symbols.upperRightCorner);
}
else if (index >= options.Count)
{
// Draw bottom line
Console.Write(Symbols.lowerLeftCorner + fullHorizLine + Symbols.lowerRightCorner);
}
else
{
ConsoleMenuOption opt = options[index];
if (opt == null)
{
// Draw separator
Console.Write(Symbols.leftTee + fullHorizLine + Symbols.rightTee);
}
else
{
// Draw menu option
Console.Write(Symbols.vertLine);
if (!opt.Enabled)
{
Console.ForegroundColor = theme.MenuDisabledFg;
}
if (index == selectedOption)
{
// Draw highlighted menu option
Console.BackgroundColor = theme.MenuSelectedBg;
Console.Write(" " + AnnotatedCaption(opt) + " ");
Console.BackgroundColor = theme.MenuBg;
}
else
{
// Draw normal menu option
Console.Write(" " + AnnotatedCaption(opt) + " ");
}
if (!opt.Enabled)
{
Console.ForegroundColor = theme.MenuFg;
}
Console.Write(Symbols.vertLine);
}
}
// Right padding
Console.Write(" ");
}
ConsoleDialog.DrawShadow(theme, right - w + 1, top, right, top + h - 1);
DrawFooter(theme);
Console.SetCursorPosition(right - longestLength - 3, top + selectedOption + 1);
Console.CursorVisible = true;
}
}