public override void CommitEditingStyle(RATreeView treeView, UITableViewCellEditingStyle editingStyle, NSObject item)
{
//base.CommitEditingStyle(treeView, editingStyle, item);
if (editingStyle != UITableViewCellEditingStyle.Delete)
{
return;
}
var i = item as DataObject;
var parent = treeView.ParentForItem(i) as DataObject;
int index;
if (parent != null)
{
index = parent.Children.FindIndex((dataObject) =>
{
return(dataObject == i);
});
parent.RemoveChild(i);
}
else
{
index = this.Data.FindIndex((dataObject) =>
{
return(dataObject == i);
});
this.Data.RemoveAt(index);
}
treeView.DeleteItemsAtIndexes(new NSIndexSet((uint)index), parent, RATreeViewRowAnimation.Right);
treeView.ReloadRowsForItems(new NSObject[] { parent }, RATreeViewRowAnimation.None);
}
private void SetupTreeView()
{
TreeView = new RATreeView(frame: View.Bounds, style: RATreeViewStyle.Plain);
TreeView.RegisterNibForCell(TreeTableViewCell.Nib, TreeTableViewCell.Key);
TreeView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
TreeView.Delegate = new TreeViewDelegate();
TreeView.DataSource = new TreeViewDataSource(Data);
TreeView.TreeFooterView = new UIView();
TreeView.BackgroundColor = UIColor.Clear;
View.AddSubview(TreeView);
TreeView.NumberOfRows();
}
public override nint NumberOfChildrenOfItem(RATreeView treeView, NSObject item)
{
var i = item as DataObject;
if (i != null)
{
return(i.Children.Count);
}
else
{
return(Data.Count);
}
}
public override NSObject GetChildItemAtIndexOfItem(RATreeView treeView, nint index, NSObject item)
{
var i = item as DataObject;
if (i != null)
{
return(i.Children[(int)index]);
}
else
{
return(Data[(int)index]);
}
}
public override UITableViewCell GetCell(RATreeView treeView, NSObject item)
{
var cell = treeView.DequeueReusableCellWithIdentifier(TreeTableViewCell.Key) as TreeTableViewCell;
var i = item as DataObject;
var level = treeView.LevelForCellForItem(i);
var detailsText = string.Format("Number of children {0}", i.Children.Count);
var expanded = treeView.IsCellForItemExpanded(i);
cell.SelectionStyle = UITableViewCellSelectionStyle.None;
cell.Setup(i.Name, detailsText, level, !expanded);
cell.AdditionButtonActionBlock = (_) =>
{
var newItem = new DataObject(name: "Added value");
i.AddChild(newItem);
treeView.InsertItemsAtIndexes(new NSIndexSet((nuint)i.Children.Count - 1), i, RATreeViewRowAnimation.None);
treeView.ReloadRowsForItems(new NSObject[] { i }, RATreeViewRowAnimation.None);
};
return(cell);
}
public override void WillCollapseRowForItem(RATreeView treeView, NSObject item)
{
var cell = treeView.CellForItem(item) as TreeTableViewCell;
cell.AdditionalButtonHidden = true;
}
public override nfloat HeightForRowForItem(RATreeView treeView, NSObject item)
{
return(44);
}
public override bool CanEditRow(RATreeView treeView, NSObject item)
{
return(true);
}
