/// <summary>
/// 初始化：检查文件夹是否有子成员，有的话加入特殊节点
/// </summary>
void Initialize()
{
if (Type == FileSystemObjectType.Folder && CheckChildObject())
{
if (ShowFile.check_gdb(Path)) //对于gdb文件夹
{
Geodatabase geo = Geodatabase.Open(Path);
if (geo.GetChildDatasets(@"\", "Feature Class").Length != 0 || geo.GetChildDatasets(@"\", "Feature Dataset").Length != 0)
{
AddSpecialChild();
}
geo.Close();
}
else //对于普通文件夹
{
AddSpecialChild();
}
}
if (Type == FileSystemObjectType.GDB) //对于GDB内feature dataset的文件夹
{
Geodatabase geo = Geodatabase.Open(ParentPath);
if (geo.GetChildDatasets(@Path, "Feature Class").Length != 0 || geo.GetChildDatasets(@Path, "Feature Dataset").Length != 0)
{
AddSpecialChild();
}
geo.Close();
}
}
/// <summary>
/// 节点被展开后的操作
/// </summary>
protected virtual void OnExpanded()
{
//是否有特殊节点
if (HasSpecialChild)
{
//将要展开的节点拥有没有列举的子成员（第一次打开）
//我们需要移除特殊节点，并将子文件夹加入到Children中
RemoveSpecialChild();
List <int> li = merge_file();
if (ShowFile.check_gdb(Path)) //对于geodatabase文件夹的处理
{
Geodatabase geo = Geodatabase.Open(Path);
foreach (var fc in geo.GetChildDatasets(@"\", "Feature Class"))
{
_Children.Add(new FileSystemObjectViewModel(fc, GetFileName(fc), FileSystemObjectType.File, Path));
}
foreach (var fds in geo.GetChildDatasets(@"\", "Feature Dataset"))
{
_Children.Add(new FileSystemObjectViewModel(fds, GetFileName(fds), FileSystemObjectType.GDB, Path));
}
geo.Close();
}
else if (Type == FileSystemObjectType.GDB) //对于geodatabase内feature dataset 的处理
{
Geodatabase geo = Geodatabase.Open(ParentPath);
foreach (var fc in geo.GetChildDatasets(@Path, "Feature Class"))
{
_Children.Add(new FileSystemObjectViewModel(fc, GetFileName(fc), FileSystemObjectType.File, Path));
}
foreach (var fds in geo.GetChildDatasets(Path, "Feature Dataset"))
{
_Children.Add(new FileSystemObjectViewModel(fds, GetFileName(fds), FileSystemObjectType.GDB, Path));
}
geo.Close();
}
else //对于其他普通文件的处理
{
foreach (var dir in GetSubDirs())
{
_Children.Add(new FileSystemObjectViewModel(dir, GetFileName(dir), FileSystemObjectType.Folder, ""));
}
IEnumerable <string> ss = GetSubFiles();
for (int i = 0; i < ss.Count(); i++)
{
bool b = false;
for (int pos = 0; pos < li.Count(); pos++)
{
if (li.ElementAt(pos) == i)
{
b = true;
break;
}
}
if (!b)
{
_Children.Add(new FileSystemObjectViewModel(ss.ElementAt(i), GetFileName(ss.ElementAt(i)), FileSystemObjectType.File, ""));
}
}
}
}
}