public static MessageBoxResult Show(
Window owner,
string messageBoxText,
string caption,
MessageBoxButton button,
MessageBoxImage icon,
MessageBoxResult defaultResult,
MessageBoxOptions options)
{
if ((options & MessageBoxOptions.DefaultDesktopOnly) == MessageBoxOptions.DefaultDesktopOnly)
{
throw new NotImplementedException();
}
if ((options & MessageBoxOptions.ServiceNotification) == MessageBoxOptions.ServiceNotification)
{
throw new NotImplementedException();
}
//加這行的原因，請見下面的PenNote註解
Dispatcher.CurrentDispatcher.Invoke(DispatcherPriority.ContextIdle, new Action(() => { }));
//PenNote: 因為_msgWindow是static，以下的psudo code會造成在第二個TRMessageBox中的dispatcher queue裡面，
// 叫出第一個BeginInvoke裡面的TRMessageBox。而第一個TRMessageBox的結果，會覆蓋掉第二個的結果，
// (因為static物件被改掉了, see _msgWindow = new TRMessageBoxWindow())，因而產生bug。
//public static void DoAbout() //--> to test, put it in CoreCommand.cs
//{
// Dispatcher.CurrentDispatcher.BeginInvoke(new Action(() =>
// {
// TRMessageBox.Show("1:OnlyShow");
// }));
// var result = TRMessageBox.Show("2:YesOrNo", "caption", MessageBoxButton.YesNo);
// return;
//}
_msgWindow = new TRMessageBoxWindow();
if (Application.Current.MainWindow == _msgWindow)
{
Application.Current.MainWindow = null; //不這樣設，之後的MainWindow秀不出來。(Test case: App.xaml.cs在create MainWindow之前，呼叫TRMessageBox)
}
if (owner == null)
{
owner = Application.Current.MainWindow;
}
try
{
_msgWindow.Owner = owner; //需避免把owner指定為自己，會crash。（尤其自己是MainWindow的時候，在前面已防掉)
}
catch (Exception ex) //e.g. assign owner to a closed window.
{
//Log.Info("Exception catched in TRMessageBoxWindow.Show() #_msgWindow.Owner = owner #. Reason = {0}", ex.Message);
_msgWindow.Owner = Application.Current.MainWindow;
}
_msgWindow._viewModel = new MessageBoxViewModel(_msgWindow, caption, messageBoxText, button, icon, defaultResult, options);
_msgWindow.DataContext = _msgWindow._viewModel;
_msgWindow.Topmost = true; //always set it to topmost, otherwise if may obstacled by other topmost window.
prevCursor = null;
try
{
prevCursor = Mouse.OverrideCursor;
Mouse.OverrideCursor = Cursors.Arrow;
}
catch (Exception ex)
{
//Log.Error("Exception catched in TRMessageBoxWindow.Show() on setting cursor. Reason={0}", ex.Message);
}
_msgWindow.ShowDialog();
try
{
Mouse.OverrideCursor = prevCursor;
}
catch (Exception ex)
{
//Log.Error("Exception catched in TRMessageBoxWindow.Show() on setting cursor. Reason={0}", ex.Message);
}
return(_msgWindow._viewModel.Result);
}
