/// <summary>
/// Method demos different sample methods for displaying a progress
/// dialog with progress that cannot be cancelled because:
///
/// - UI shows no Cancel button
/// - Backend process does not evaluate <seealso cref="CancellationToken"/> parameter
/// </summary>
/// <param name="parentWindow"></param>
/// <param name="progressIsFinite"></param>
/// <param name="closeDialogOnProgressFinished"></param>
/// <param name="isCancelable"></param>
/// <returns></returns>
internal async Task <int> ShowNoCancelProgressAsync(
IMetroWindow parentWindow
, bool progressIsFinite
, bool closeDialogOnProgressFinished = false
, bool isCancelable = true
)
{
bool isVisible = true;
string progressText = null;
var progressColl = new ProgressSettings[1];
// Configure a progress display with its basic settings
progressColl[0] = new ProgressSettings(0, 1, 0, progressIsFinite
, progressText, isCancelable, isVisible
, closeDialogOnProgressFinished)
{
Title = "Please wait...",
Message = "We are baking some cupcakes!",
ExecAction = GenSampleNonCancelableProocess()
};
var viewModel = new Demos.ViewModels.ProgressDialogViewModel();
var customDialog = CreateProgressDialog(viewModel);
var dlg = GetService <IContentDialogService>();
var manager = dlg.Manager;
EventHandler <DialogStateChangedEventArgs> OnViewOpenedEvent = (s, e) =>
{
// Start Task in ProgressViewModel and wait for result in Dialog below
// But do not start before view is visible because task could otherwise
// finish before view close request can be handled by the view ...
viewModel.StartProcess(progressColl);
};
manager.DialogOpened += OnViewOpenedEvent;
int result = -1;
try
{
result = await manager.ShowMetroDialogAsync(parentWindow, customDialog);
}
finally
{
manager.DialogOpened -= OnViewOpenedEvent;
}
Console.WriteLine("Process Result: '{0}'", viewModel.Progress.ProcessResult);
return(result);
}
internal void ShowDialogOutside(IMetroWindow parentWindow
, bool progressIsFinite
, bool closeDialogOnProgressFinished = false
, bool isCancelable = true
)
{
bool isVisible = true;
string progressText = null;
var progressColl = new ProgressSettings[1];
// Configure a progress display with its basic settings
progressColl[0] = new ProgressSettings(0, 1, 0, progressIsFinite
, progressText, isCancelable, isVisible
, closeDialogOnProgressFinished)
{
Title = "Progress Outside",
Message = "This progress is shown in a seperate window above the main window",
ExecAction = GenCancelableSampleProcess()
};
var viewModel = new Demos.ViewModels.ProgressDialogViewModel();
var customDialog = CreateProgressDialog(viewModel);
var dlg = GetService <IContentDialogService>();
var manager = GetService <IContentDialogService>().Manager;
EventHandler <DialogStateChangedEventArgs> OnViewOpenedEvent = (s, e) =>
{
// Start Task in ProgressViewModel and wait for result in Dialog below
// But do not start before view is visible because task could otherwise
// finish before view close request can be handled by the view ...
viewModel.StartProcess(progressColl);
};
manager.DialogOpened += OnViewOpenedEvent;
int result = -1;
try
{
result = dlg.Manager.ShowModalDialogExternal(parentWindow, customDialog
, dlg.DialogSettings);
}
finally
{
manager.DialogOpened -= OnViewOpenedEvent;
}
Console.WriteLine("Process Result: '{0}'", viewModel.Progress.ProcessResult);
}
/// <summary>
/// Shows a sample progress dialog that was invoked via a bound viewmodel.
/// </summary>
/// <param name="context"></param>
/// <param name="progressIsFinite"></param>
/// <param name="closeDialogOnProgressFinished"></param>
/// <param name="isCancelable"></param>
internal async void ShowDialogFromVM(
object context
, bool progressIsFinite
, bool closeDialogOnProgressFinished = false
, bool isCancelable = true
)
{
bool isVisible = true;
string progressText = null;
var progressColl = new ProgressSettings[1];
// Configure a progress display with its basic settings
progressColl[0] = new ProgressSettings(0, 1, 0, progressIsFinite
, progressText, isCancelable, isVisible
, closeDialogOnProgressFinished)
{
Title = "Progress from VM",
Message = "Progressing all the things, wait a few seconds",
ExecAction = GenCancelableSampleProcess()
};
var viewModel = new Demos.ViewModels.ProgressDialogViewModel();
var customDialog = CreateProgressDialog(viewModel);
var coord = GetService <IContentDialogService>().Coordinator;
var manager = GetService <IContentDialogService>().Manager;
EventHandler <DialogStateChangedEventArgs> OnViewOpenedEvent = (s, e) =>
{
// Start Task in ProgressViewModel and wait for result in Dialog below
// But do not start before view is visible because task could otherwise
// finish before view close request can be handled by the view ...
viewModel.StartProcess(progressColl);
};
manager.DialogOpened += OnViewOpenedEvent;
await coord.ShowMetroDialogAsync(context, customDialog).ContinueWith
(
t =>
{
manager.DialogOpened -= OnViewOpenedEvent;
Console.WriteLine(t.Result);
}
);
}
/// <summary>
/// Creates a <seealso cref="MWindowDialogLib.Dialogs.CustomDialog"/> that contains a <seealso cref="ProgressView"/>
/// in its content and has a <seealso cref="ProgressViewModel"/> attached to its datacontext,
/// </summary>
/// <param name="viewModel"></param>
/// <returns></returns>
private CustomDialog CreateProgressDialog(Demos.ViewModels.ProgressDialogViewModel viewModel)
{
return(new MWindowDialogLib.Dialogs.CustomDialog(new Demos.Views.ProgressView(), viewModel));
}
