private void RenderNodes(KeyCatalog catalog, NodeCollection nodes, int restoreLevel)
{
restoreLevel--;
foreach (KeyCatalog sub in catalog.Subcatalogs.SortedValues)
{
KeyNode n = new KeyNode(sub.ToString())
{
Catalog = sub
};
nodes.Add(n);
if (restoreLevel < 0)
{
if (SelectionNodeName == sub.Name)
{
ATree.SelectedNode = n;
}
}
if (!sub.IsLeaf)
{
RenderNodes(sub, n.Nodes, restoreLevel);
}
}
}
protected override void GenerateTreeStruct(KeyCatalog root)
{
string cmd = "select uid,\"group\" from $dsaserver where uid in(@PrimaryKeys) order by \"group\"";
StringBuilder primarykeys = new StringBuilder();
primarykeys.AppendFormat("{0}", "-1"); //如果沒有資料也不會爆掉。
foreach (string key in Source)
{
primarykeys.AppendFormat(",{0}", key);
}
cmd = cmd.Replace("@PrimaryKeys", primarykeys.ToString());
DataTable result = Backend.Select(cmd);
root["未分類"].Tag = int.MaxValue;
foreach (DataRow row in result.Rows)
{
string id = row["uid"].ToString();
string group = row["group"].ToString();
if (string.IsNullOrWhiteSpace(group))
{
group = "未分類";
}
root[group].AddKey(id);
}
}
public KeyCatalog this[string name]
{
get
{
if (!_catalogs.ContainsKey(name))
{
KeyCatalog kc = null;
kc = Factory.Create(name);
_catalogs.Add(name, kc);
}
return(_catalogs[name]);
}
}
protected override int KeyCatalogComparer(KeyCatalog x, KeyCatalog y)
{
int X, Y;
if (!int.TryParse(x.Tag + "", out X))
{
X = int.MinValue;
}
if (!int.TryParse(y.Tag + "", out Y))
{
Y = int.MinValue;
}
return(X.CompareTo(Y));
}
/// <summary>
/// 產生資料到畫面上，請透過 GenerateDataModel 產生資料結構。
/// </summary>
protected void RenderTreeView(bool reserveSelection)
{
if (reserveSelection)
{
ReserveTreeSelection();
}
KeyCatalog userroot = new KeyCatalog(RootCaption, KCFactory);
Task task = Task.Factory.StartNew((x) =>
{
GenerateTreeStruct(x as KeyCatalog);
}, userroot);
task.ContinueWith(x =>
{
if (x.Exception != null)
{
ErrorBox.Show(x.Exception.Message, x.Exception);
}
ATree.Nodes.Clear();
KeyCatalog rkc = x.AsyncState as KeyCatalog;
if (ShowRoot)
{
KeyCatalog root = new KeyCatalog("", KCFactory);
root.Subcatalogs.Add(rkc);
RenderNodes(root, ATree.Nodes, RestoreLevel);
}
else
{
RenderNodes(rkc, ATree.Nodes, RestoreLevel);
}
foreach (Node n in ATree.Nodes)
{
n.Expand();
}
}, UISyncContext);
}
/// <summary>
/// 排序 KeyCatalog，如果不改寫則使用 Name 屬性排序。
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <returns></returns>
protected virtual int KeyCatalogComparer(KeyCatalog x, KeyCatalog y)
{
return(NameComparer.Compare(x.Name, y.Name));
}
/// <summary>
/// 產生資料模型，將資料產生在 Root 屬性上。
/// </summary>
protected virtual void GenerateTreeStruct(KeyCatalog root)
{
throw new NotImplementedException("您應該實作此方法。");
}
/// <summary>
/// 提供 KeyCatalog 標題的格式化方法。
/// </summary>
/// <param name="catalog"></param>
/// <returns></returns>
protected virtual string KeyCatalogTitleFormat(KeyCatalog catalog)
{
return(string.Format("{0}({1})", catalog.Name, catalog.TotalKeyCount));
}
public void Add(KeyCatalog catalog)
{
_catalogs.Add(catalog.Name, catalog);
}