public void Add(IEntryViewModel item)
{
_updatingNavigationHistory = true;
try
{
//GC.Collect(0, GCCollectionMode.Forced, true);
if (NavigationPosition != -1)
{
for (int i = 0; i < NavigationPosition; i++)
{
NavigationHistory.RemoveAt(0);
}
}
while (NavigationHistory.Count > 10)
{
NavigationHistory.RemoveAt(NavigationHistory.Count - 1);
}
if (NavigationHistory.IndexOf(item) != -1)
{
NavigationHistory.Remove(item);
}
NavigationHistory.Insert(0, item);
NavigationPosition = 0;
UpdateState();
}
finally
{
_updatingNavigationHistory = false;
}
}
private void AddNavigationHistory(ViewerBaseVM item)
{
if (NavigationPosition != -1)
{
for (int i = 0; i < NavigationPosition; i++)
{
NavigationHistory.RemoveAt(0);
}
}
while (NavigationHistory.Count > 10)
{
NavigationHistory.RemoveAt(NavigationHistory.Count - 1);
}
if (NavigationHistory.IndexOf(item) != -1)
{
NavigationHistory.Remove(item);
}
NavigationHistory.Insert(0, item);
NavigationPosition = 0;
//if (jpList != null)
//{
// jpList.AddToRecent(item.EmbeddedDirectoryModel.EmbeddedDirectoryEntry.ParseName);
// jpList.Refresh();
//}
}
async void _frame_Navigated(object sender, NavigationEventArgs e)
{
try
{
if (e.NavigationMode == NavigationMode.Back)
{
var lastEntry = _history.AliveEntries.LastOrDefault();
if (lastEntry != null)
{
await _history.Remove(CancellationToken.None, lastEntry);
}
lastEntry = _history.AliveEntries.LastOrDefault();
var page = e.Content as FrameworkElement;
if (lastEntry != null && page != null)
{
await _dispatcherScheduler.Run(() => page.DataContext = lastEntry.ViewModel);
}
}
}
catch (Exception)
{
}
}
