/// <summary>
/// Creates a new popup page to edit filter settings
/// </summary>
/// <param name="filterSettings">filter settings to edit</param>
public FilterTakeoffDirectionsPopupPage(LocationFilterSettings filterSettings)
{
this.CloseWhenBackgroundIsClicked = true;
this.BindingContext = this.viewModel =
new FilterTakeoffDirectionsPopupViewModel(filterSettings);
this.InitializeComponent();
}
/// <summary>
/// Shows "filter by takeoff directions" popup page and lets the user set the filter
/// criteria.
/// </summary>
/// <param name="filterSettings">filter settings to edit</param>
/// <returns>filter settings, or null when user canceled the popup dialog</returns>
public static async Task <LocationFilterSettings> ShowAsync(LocationFilterSettings filterSettings)
{
var popupPage = new FilterTakeoffDirectionsPopupPage(filterSettings)
{
tcs = new TaskCompletionSource <LocationFilterSettings>()
};
await popupPage.Navigation.PushPopupAsync(popupPage);
return(await popupPage.tcs.Task);
}