/// <summary>
/// Verifies that all the settings are correct, throwing an exception if not. For all settings left at defaults,
/// stores a value deemed appropriate based on the other settings.</summary>
private void deduceAndCheckSettings()
{
if (Buttons == null || Buttons.Length == 0)
{
Buttons = new[] { DlgMessageForm.DefaultOKCaption }
}
;
if (Buttons.Length > 4)
{
throw new ArgumentException("The number of message buttons must not exceed 4. Actual number: {0}".Fmt(Buttons.Length));
}
if (Message == null)
{
Message = "";
}
if (Caption == null)
{
Caption = DlgMessageForm.DefaultCaption[(int)Type];
}
if (Image == null && Type != DlgType.Custom)
{
Image = DlgMessageForm.GetDefaultImage(Type);
}
if (AcceptButton < 0)
{
AcceptButton = 0;
}
if (CancelButton < 0)
{
CancelButton = Buttons.Length - 1;
}
if (AcceptButton > Buttons.Length - 1 || CancelButton > Buttons.Length - 1)
{
throw new ArgumentException("AcceptButton or CancelButton is too large for the specified number of buttons.");
}
}
/// <summary>
/// Creates a message form and fills in the controls using the current settings. Does not verify whether the
/// settings are valid, so must only be used internally and only after the settings have been verified.</summary>
/// <returns>
/// The index of the button pressed.</returns>
private int showAsIs()
{
using (var form = new DlgMessageForm())
{
if (Image != null)
{
form.img.Image = Image;
form.img.Visible = true;
}
form.Text = Caption;
form.Font = SystemFonts.MessageBoxFont;
if (Font != null)
{
form.Message.Font = Font;
}
form.Message.MaximumSize = new Size(Math.Max(600, Screen.PrimaryScreen.WorkingArea.Width / 2), Screen.PrimaryScreen.WorkingArea.Height * 3 / 4);
form.Message.Text = Format == DlgMessageFormat.PlainText ? EggsML.Escape(Message) : Message;
// --- Buttons - captions, visibility, accept/cancel
Button[] Btn = new Button[4];
Btn[0] = form.Btn0;
Btn[1] = form.Btn1;
Btn[2] = form.Btn2;
Btn[3] = form.Btn3;
form.AcceptButton = null;
form.CancelButton = null;
for (int i = Buttons.Length - 1; i >= 0; i--)
{
Btn[i].Visible = true;
Btn[i].Text = Buttons[i];
Btn[i].SendToBack(); // otherwise table layout ordering is messed up
}
form.AcceptButton = Btn[AcceptButton];
form.CancelButton = Btn[CancelButton];
form.Shown += (dummy1, dummy2) => Btn[AcceptButton].Focus(); // otherwise the AcceptButton has no effect
// --- Ding
if (Environment.OSVersion.Platform != PlatformID.Unix && Environment.OSVersion.Platform != PlatformID.MacOSX)
{
switch (Type)
{
case DlgType.Info:
WinAPI.MessageBeep(WinAPI.MessageBeepType.Information);
break;
case DlgType.Question:
WinAPI.MessageBeep(WinAPI.MessageBeepType.Question);
break;
case DlgType.Warning:
WinAPI.MessageBeep(WinAPI.MessageBeepType.Warning);
break;
case DlgType.Error:
WinAPI.MessageBeep(WinAPI.MessageBeepType.Error);
break;
}
}
// --- Show
form.ShowInTaskbar = ShowInTaskbar;
var result = form.ShowDialog();
// --- Return button index
switch (result)
{
case DialogResult.OK:
return(0);
case DialogResult.Cancel:
return(1);
case DialogResult.Yes:
return(2);
case DialogResult.No:
return(3);
default:
// Should be unable to get here
throw new Exception("Internal exception in Util: unreachable code");
}
}
}