Created
August 20, 2021 16:14
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Create a blocking/modal dialog with a new window on UWP. No dependencies.
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private async void Settings_Click(object sender, PointerRoutedEventArgs e) | |
{ | |
var mainViewId = ApplicationView.GetForCurrentView().Id; | |
CoreApplicationView newView = CoreApplication.CreateNewView(); | |
int newViewId = 0; | |
var popupClosed = new TaskCompletionSource<bool>(); | |
Window settingsWindow = null; | |
var mainWindow = Window.Current; | |
bool settingsClosing = false; | |
async void FocusSettingsDialog(object sender, dynamic @event) | |
{ | |
if (!settingsClosing) | |
{ | |
await ApplicationViewSwitcher.SwitchAsync(newViewId, mainViewId, ApplicationViewSwitchingOptions.SkipAnimation); | |
} | |
} | |
mainWindow.Activated += FocusSettingsDialog; | |
await newView.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => | |
{ | |
Frame frame = new Frame(); | |
frame.Navigate(typeof(SettingsDialog), null); | |
settingsWindow = Window.Current; | |
Window.Current.Content = frame; | |
var page = (SettingsDialog)frame.Content; | |
// You have to activate the window in order to show it later. | |
Window.Current.Activate(); | |
newViewId = ApplicationView.GetForCurrentView().Id; | |
var settingsDialog = (SettingsDialog)frame.Content; | |
settingsDialog.Closing += async () => | |
{ | |
settingsClosing = true; | |
await mainWindow.Dispatcher.RunAsync(CoreDispatcherPriority.High, () => mainWindow.Activated -= FocusSettingsDialog); | |
popupClosed.TrySetResult(true); | |
}; | |
settingsDialog.CancelClicked += async () => | |
{ | |
await ApplicationViewSwitcher.SwitchAsync(mainViewId, newViewId, ApplicationViewSwitchingOptions.ConsolidateViews); | |
}; | |
settingsDialog.SaveClicked += async () => | |
{ | |
await ApplicationViewSwitcher.SwitchAsync(mainViewId, newViewId, ApplicationViewSwitchingOptions.ConsolidateViews); | |
// Save settings here | |
await settingsDialog.Settings.SaveAsync(); | |
await App.ReloadSettingsAsync(); | |
}; | |
settingsDialog.Settings = App.Settings; | |
}); | |
bool viewShown = await ApplicationViewSwitcher.TryShowAsStandaloneAsync(newViewId); | |
await newView.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => | |
{ | |
var frame = (Frame)Window.Current.Content; | |
var page = (SettingsDialog)frame.Content; | |
var resized = ApplicationView.GetForCurrentView().TryResizeView(new Windows.Foundation.Size(page.ActualWidth, page.ActualHeight)); | |
}); | |
await popupClosed.Task; | |
await ApplicationViewSwitcher.SwitchAsync(mainViewId); | |
} |
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