protected override TreeListControlState CreateState(TreeListState state)
{
if (state == TreeListState.IncrementalSearch && this.TreeList is MyTreeList)
{
return(new MyFinder((this.TreeList as MyTreeList).GetHandler()));
}
return(base.CreateState(state));
}
protected override TreeListHandler.TreeListControlState CreateState(TreeListState state)
{
if (state == TreeListState.NodeDragging)
{
return(new MyNodeDraggingState(this));
}
return(base.CreateState(state));
}
protected override TreeListControlState CreateState(TreeListState state)
{
switch (state)
{
case TreeListState.ColumnDragging:
return(new MyColumnDraggingState(this));
}
return(base.CreateState(state));
}
async Task OnStateInitHandler(TreeListStateEventArgs <TreeListItemDto> args)
{
var localStorage = await LocalStorage.GetItemAsync <TreeListState <TreeListItemDto> >("TreeListExample");
if (null == localStorage)
{
Log.Warning("Empty state");
localStorage = new TreeListState <TreeListItemDto>()
{
//collapse all items in the TreeList upon initialization of the state
ExpandedItems = new List <TreeListItemDto>()
};
}
Log.Warning($"Tree State {localStorage.ExpandedItems.Count()}");
args.TreeListState = localStorage;
}
