public static void ForEachNodeData(this LabelEditEnhancedTreeView @this, Predicate <ITreeNodeData> predicate)
{
foreach (TreeNode treeNode in @this.Nodes)
{
predicate(treeNode.GetNodeData());
}
}
// public static void RegisterNodeDataType<T>(this LabelEditEnhancedTreeView @this) where T : ITreeNodeData, new()
// {
// @this.Tag = new Func<string, T>(s => (T) CreateNodeDataInstance<T>(s));
// }
public static ITreeNodeData CreateNewNodeData(this LabelEditEnhancedTreeView @this, string displayValue)
{
//Func<string, ITreeNodeData> createFunc = (Func<string, ITreeNodeData>)@this.Tag;
//return createFunc(displayValue);
Type type = (Type)@this.Tag;
ITreeNodeData newData = (ITreeNodeData)System.Activator.CreateInstance(type);
newData.DisplayValue = displayValue;
return(newData);
}
public static bool HasNewItemNode(this LabelEditEnhancedTreeView @this)
{
foreach (TreeNode treeNode in @this.Nodes)
{
if (treeNode.GetNodeProxy().IsNewItemNode)
{
return(true);
}
}
return(false);
}
public static TreeNode CreateNewItemNode(this LabelEditEnhancedTreeView @this)
{
ITreeNodeData treeNodeData = @this.CreateNewNodeData(TreeNodeProxy.NEW_ITEM_NODE_TEXT);
TreeNode treeNode = CreateNode(@this, treeNodeData);
treeNode.ForeColor = Color.Gray;
treeNode.ImageIndex = 0;
treeNode.StateImageIndex = 0;
treeNode.SelectedImageIndex = 0;
TreeNodeProxy treeNodeProxy = treeNode.GetNodeProxy();
treeNodeProxy.IsNewItemNode = true;
return(treeNode);
}
public static TreeNode CreateNode <T>(this LabelEditEnhancedTreeView @this, T nodeData)
where T : ITreeNodeData
{
string displayValue = nodeData == null ? string.Empty : nodeData.DisplayValue;
TreeNode treeNode = @this.Nodes.Add(displayValue);
bool isNewItemNode = nodeData == null;
TreeNodeProxy nodeProxy = new TreeNodeProxy <T>(nodeData, isNewItemNode);
int iconIndex = isNewItemNode ? 0 : nodeData.IconIndex;
treeNode.ImageIndex = iconIndex;
treeNode.StateImageIndex = iconIndex;
treeNode.SelectedImageIndex = iconIndex;
treeNode.SetNodeProxy(nodeProxy);
return(treeNode);
}
public static void RegisterNodeDataType(this LabelEditEnhancedTreeView @this, Type type)
{
@this.Tag = type;
}
public static IEnumerable <ITreeNodeData> AllNodeData(this LabelEditEnhancedTreeView @this)
{
return(@this.Nodes.OfType <TreeNode>().Select(node => node.GetNodeData()));
}
