private void HandleNavigateEntry(IFileSystemHistoryOperations entry)
{
var next = History.GetNext(entry);
var selected = next != null ? (TFolder)next.DriveFolder : null;
NavigateAsync(entry.DriveFolder, selected).ConfigureAwait(false);
}
public IFileSystemHistoryOperations GetNext(IFileSystemHistoryOperations entry)
{
var index = _historyEntries.IndexOf(entry);
if (index == _historyEntries.Count - 1)
{
return(null);
}
return(_historyEntries[index + 1]);
}
private bool IsForwardEntry(IFileSystemHistoryOperations entry)
{
var c = Current;
if (entry == c)
{
return(false);
}
var currentIndex = _historyEntries.IndexOf(c);
var index = _historyEntries.IndexOf(entry);
return(index > currentIndex);
}
public void Add(IFileSystemHistoryOperations entry)
{
var c = Current;
if (c != null)
{
var index = _historyEntries.IndexOf(Current);
for (var i = _historyEntries.Count - 1; i > index; i--)
{
var forwardItem = _historyEntries[i];
_historyEntries.Remove(forwardItem);
}
}
entry.Navigate -= HandleEntryNavigate;
entry.Navigate += HandleEntryNavigate;
_historyEntries.Add(entry);
Current = entry;
}
