/// <summary>
/// Add a line to the text box
/// </summary>
/// <param name="line">String to add</param>
public void AddLine(string line)
{
lines.Add(line);
int w = GetRight() - GetLeft() + 1 + (needScroll ? -1 : 0);
// AddRange isn't thread-safe, it temporarily pads with nulls
foreach (string subLine in Formatting.WordWrap(line, w))
{
displayLines.Add(subLine);
}
if (!needScroll)
{
int h = GetBottom() - GetTop() + 1;
if (displayLines.Count > h)
{
// We just crossed over from non-scrollbar to scrollbar,
// re-wrap the whole display including this line
needScroll = true;
rewrapLines();
}
}
if (scrollToBottom)
{
ScrollToBottom();
}
else
{
// No auto-scrolling
}
}
/// <summary>
/// Initialize the Dialog
/// </summary>
/// <param name="m">Message to show</param>
/// <param name="hdr">Text for column header of list box</param>
/// <param name="c">List of objects to put in the list box</param>
/// <param name="renderer">Function to generate text for each option</param>
/// <param name="comparer">Optional function to sort the rows</param>
public ConsoleChoiceDialog(string m, string hdr, List <ChoiceT> c, Func <ChoiceT, string> renderer, Comparison <ChoiceT> comparer = null)
: base()
{
int l = GetLeft(),
r = GetRight();
int w = r - l + 1;
// Resize the window to fit the content
List <string> msgLines = Formatting.WordWrap(m, w - 4);
int h = 2 + msgLines.Count + 1 + 1 + c.Count + 2;
int t = (Console.WindowHeight - h) / 2;
int b = t + h - 1;
SetDimensions(l, t, r, b);
// Wrapped message at top
ConsoleTextBox tb = new ConsoleTextBox(
l + 2, t + 2, r - 2, t + 2 + msgLines.Count - 1,
false,
TextAlign.Left,
() => ConsoleTheme.Current.PopupBg,
() => ConsoleTheme.Current.PopupFg
);
AddObject(tb);
tb.AddLine(m);
// ConsoleListBox<ChoiceT> of choices at bottom
choices = new ConsoleListBox <ChoiceT>(
l + 2, t + 2 + msgLines.Count + 1, r - 2, b - 2,
c,
new List <ConsoleListBoxColumn <ChoiceT> >()
{
new ConsoleListBoxColumn <ChoiceT>()
{
Header = hdr,
Width = w - 6,
Renderer = renderer,
Comparer = comparer
}
},
0, 0, ListSortDirection.Ascending
);
choices.AddTip("Enter", "Accept");
choices.AddBinding(Keys.Enter, (object sender) => {
return(false);
});
choices.AddTip("Esc", "Cancel");
choices.AddBinding(Keys.Escape, (object sender) => {
cancelled = true;
return(false);
});
AddObject(choices);
}
/// <summary>
/// Add a line to the text box
/// </summary>
/// <param name="line">String to add</param>
public void AddLine(string line)
{
lines.AddRange(Formatting.WordWrap(line, GetRight() - GetLeft() + 1));
if (scrollToBottom)
{
ScrollToBottom();
}
else
{
// No auto-scrolling
}
}
/// <summary>
/// Add a line to the text box
/// </summary>
/// <param name="line">String to add</param>
public void AddLine(string line)
{
// AddRange isn't thread-safe, it temporarily pads with nulls
foreach (string subLine in Formatting.WordWrap(line, GetRight() - GetLeft() + 1))
{
lines.Add(subLine);
}
if (scrollToBottom)
{
ScrollToBottom();
}
else
{
// No auto-scrolling
}
}
private void rewrapLines()
{
int w = GetRight() - GetLeft() + 1 + (needScroll ? -1 : 0);
prevTextW = w;
int h = GetBottom() - GetTop() + 1;
float scrollFrac = displayLines.Count > h
? (float)topLine / ((float)displayLines.Count - h)
: 0;
displayLines.Clear();
foreach (string line in lines)
{
foreach (string subLine in Formatting.WordWrap(line, w))
{
displayLines.Add(subLine);
}
}
topLine = (int)Math.Max(0,
scrollFrac * (displayLines.Count - h));
}
/// <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,
th => th.PopupBg,
th => th.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;
}
}