public void LoadExpansionState(ITreeViewModelItem item)
{
var itemPath = item.CreatePath();
if (ExpansionStates.ContainsKey(itemPath))
{
item.IsExpanded = ExpansionStates[itemPath];
}
}
public void SaveExpansionState(ITreeViewModelItem item)
{
var itemPath = item.CreatePath();
if (ExpansionStates.ContainsKey(itemPath))
{
ExpansionStates[itemPath] = item.IsExpanded;
}
else
{
ExpansionStates.Add(itemPath, item.IsExpanded);
}
}
public void CleanUp()
{
CleanUpRequests++;
if (CleanUpRequests < 10)
{
return;
}
var allItemPaths = Owner.Items.Select(o => o.CreatePath()).ToList();
foreach (var state in ExpansionStates.ToList())
{
if (!allItemPaths.Contains(state.Key))
{
ExpansionStates.Remove(state.Key);
}
}
CleanUpRequests = 0;
}
/// <summary>
/// Sets the state of to toolbar.
/// </summary>
private void GoToToolbarState(ExpansionStates state, bool useTransition = true)
{
VisualStateManager.GoToState(this, state.ToString(), useTransition);
}