public static bool TryParse(Uri path, INavigationParameters parameters, out NavigationQueue queue)
{
if (path == null)
{
queue = null;
return(false);
}
if (path.IsAbsoluteUri)
{
throw new Exception("Navigation path must not be absolute Uri.");
}
var groups = path.OriginalString
.Split("/")
.Where(x => !string.IsNullOrEmpty(x))
.Select((x, index) => new PathInfo(x, parameters)
{
Index = index,
PageType = _locator.FindView?.Invoke(x.Split('?').First()),
ViewModelType = _locator.FindViewModel?.Invoke(_locator.FindView?.Invoke(x.Split('?').First())),
});
queue = new NavigationQueue(groups)
{
ClearBackStack = path.OriginalString.StartsWith("/"),
};
return(queue.Any());
}
private async Task <INavigationResult> NavigateAsync(
NavigationQueue queue,
NavigationTransitionInfo infoOverride)
{
Debug.WriteLine($"{nameof(FrameFacade)}.{nameof(NavigateAsync)}({queue})");
// clear stack, if requested
if (queue.ClearBackStack)
{
_frame.SetNavigationState(new Frame().GetNavigationState());
}
// iterate through queue
while (queue.Count > 0)
{
var pageNavinfo = queue.Dequeue();
var result = await NavigateAsync(
pageNavInfo : pageNavinfo,
infoOverride : infoOverride);
// do not continue on failure
if (!result.Success)
{
return(result);
}
}
// finally
return(NavigationResult.Successful());
}
async Task <INavigationResult> NavigateAsync(
string path,
INavigationParameters parameter,
NavigationTransitionInfo infoOverride)
{
return(await NavigateAsync(
queue : NavigationQueue.Parse(path, parameter),
infoOverride : infoOverride));
}
public static bool TryParse(string path, INavigationParameters parameters, out NavigationQueue queue)
{
if (string.IsNullOrEmpty(path))
{
queue = null;
return(false);
}
if (Uri.TryCreate(path, UriKind.RelativeOrAbsolute, out var uri))
{
return(TryParse(new Uri(path, UriKind.Relative), parameters, out queue));
}
else
{
queue = null;
return(false);
}
}
public static bool TryParse(Uri uri, INavigationParameters parameters, out NavigationQueue queue)
{
if (uri == null)
{
queue = null;
return(false);
}
if (uri.IsAbsoluteUri)
{
throw new Exception("Navigation path must not be absolute Uri.");
}
var groups = uri.OriginalString.Split('/')
.Where(x => !string.IsNullOrEmpty(x))
.Select((path, index) => new NavigationPath(index, path, parameters));
queue = new NavigationQueue(groups)
{
ClearBackStack = uri.OriginalString.StartsWith("/"),
};
return(queue.Any());
}
