/// <summary>
/// Creates a new context menu popup
/// </summary>
/// <param name="viewModel">view model for the popup</param>
public ContextMenuPopupPage(ContextMenuPopupViewModel viewModel)
{
this.CloseWhenBackgroundIsClicked = true;
this.BindingContext = viewModel;
this.InitializeComponent();
}
/// <summary>
/// Shows the context menu
/// </summary>
/// <param name="point">map point where the long-tap occurred</param>
/// <param name="appSettings">app settings</param>
/// <returns>task to wait on</returns>
public static async ValueTask <Result> ShowAsync(MapPoint point, AppSettings appSettings)
{
string latitudeText = GeoDataFormatter.FormatLatLong(point.Latitude, appSettings.CoordinateDisplayFormat);
string longitudeText = GeoDataFormatter.FormatLatLong(point.Longitude, appSettings.CoordinateDisplayFormat);
string caption =
$"Selected point at Latitude: {latitudeText}, Longitude: {longitudeText}, Altitude {point.Altitude.GetValueOrDefault(0.0)} m";
var tcs = new TaskCompletionSource <Result>();
var items = new List <MenuItem>
{
new MenuItem
{
Text = "Add new waypoint",
IconImageSource = SvgImageCache.GetImageSource("info/images/playlist-plus.svg"),
Command = new Command(() => tcs.TrySetResult(Result.AddNewWaypoint)),
},
new MenuItem
{
Text = "Navigate here",
IconImageSource = SvgImageCache.GetImageSource("info/images/directions.svg"),
Command = new Command(() => tcs.TrySetResult(Result.NavigateHere)),
},
new MenuItem
{
Text = "Show flying range",
IconImageSource = SvgImageCache.GetImageSource("info/images/arrow-expand-horizontal.svg"),
Command = new Command(() => tcs.TrySetResult(Result.ShowFlyingRange)),
},
};
ContextMenuPopupPage popupPage = null;
EventHandler backgroundClicked =
(sender, args) => tcs.TrySetResult(Result.Cancel);
var viewModel = new ContextMenuPopupViewModel(
caption,
items,
() =>
{
popupPage.Navigation.PopPopupAsync(true);
popupPage.BackgroundClicked -= backgroundClicked;
});
popupPage = new ContextMenuPopupPage(viewModel);
popupPage.BackgroundClicked += backgroundClicked;
await popupPage.Navigation.PushPopupAsync(popupPage, true);
return(await tcs.Task);
}
/// <summary>
/// Shows context menu
/// </summary>
/// <returns>task to wait on</returns>
private async Task ShowContextMenu()
{
foreach (var item in this.Items)
{
item.IsEnabled &= item.Command.CanExecute(item.CommandParameter);
}
var viewModel = new ContextMenuPopupViewModel(
this.Caption,
this.Items,
() => { this.Navigation.PopPopupAsync(true); });
var popupPage = new ContextMenuPopupPage(viewModel);
await popupPage.Navigation.PushPopupAsync(popupPage, true);
}
public ShowContextMenuPopupCommand(Workspace workspace, ContextMenuPopupViewModel contextMenuPopup)
{
_workspace = workspace;
_contextMenuPopup = contextMenuPopup;
}
