public async Task Remove(CancellationToken ct, INavigationHistoryEntry entry)
{
await _remove(ct, entry);
_entries.Remove(entry);
_viewModels.Remove(entry.Request);
}
private async Task RemoveHistoryEntry(CancellationToken ct, INavigationHistoryEntry arg)
{
if (arg.IsAlive)
{
var aliveEntry = (AliveNavigationHistoryEntry)arg;
await ThreadPool.RunAsync(operation => _viewModelFactory.ReleaseViewModel(aliveEntry.ViewModel), WorkItemPriority.Low);
}
}
private async Task NavigateBackWithNotAliveRequest(CancellationToken ct, INavigationHistoryEntry previousEntry)
{
//entries has no navigation page created so we navigate to the page and remove
var last = _history.Entries.Last();
await Navigate(ct, previousEntry.Request);
await _dispatcherScheduler.Run(() => _frame.RemoveBackEntry());
//removes the previous entry which was not alive
await _history.Remove(ct, previousEntry);
//removes the last entry which was the page where the back navigation was made
await _history.Remove(ct, last);
}
public async Task Remove(CancellationToken ct, INavigationHistoryEntry entry)
{
await _remove(ct, entry);
_entries.Remove(entry);
_viewModels.Remove(entry.Request);
}
private async Task RemoveHistoryEntry(CancellationToken ct, INavigationHistoryEntry arg)
{
if (arg.IsAlive)
{
var aliveEntry = (AliveNavigationHistoryEntry)arg;
await ThreadPool.RunAsync(operation => _viewModelFactory.ReleaseViewModel(aliveEntry.ViewModel), WorkItemPriority.Low);
}
}
private async Task NavigateBackWithNotAliveRequest(CancellationToken ct, INavigationHistoryEntry previousEntry)
{
//entries has no navigation page created so we navigate to the page and remove
var last = _history.Entries.Last();
await Navigate(ct, previousEntry.Request);
await _dispatcherScheduler.Run(() => _frame.RemoveBackEntry());
//removes the previous entry which was not alive
await _history.Remove(ct, previousEntry);
//removes the last entry which was the page where the back navigation was made
await _history.Remove(ct, last);
}
