static public IProgressTaskDialog CreateProgressDialogInstance()
{
Assembly uiAssembly = Assembly.LoadFrom(SystemVariables.ApplicationDirectory + @"/gView.Win.Explorer.UI.dll");
IProgressTaskDialog p = uiAssembly.CreateInstance("gView.Framework.UI.Dialogs.FormTaskProgress") as IProgressTaskDialog;
return(p);
}
async public Task <IDatasetElement> Element(string title)
{
foreach (IDatasetElement element in _elements)
{
if (element == null)
{
continue;
}
if (element.Title == title)
{
return(element);
}
}
try
{
if (title.ToLower().EndsWith(".shp"))
{
title = title.Substring(0, title.Length - 4);
}
DirectoryInfo di = new DirectoryInfo(_connectionString);
FileInfo[] fi = di.GetFiles(title + ".shp");
if (fi.Length == 0)
{
_errMsg = "Can't find shapefile...";
return(null);
}
SHPFile shpFile = new SHPFile(fi[0].FullName);
FileInfo idx = new FileInfo(shpFile.IDX_Filename);
if (!idx.Exists ||
idx.LastWriteTime < shpFile.LastWriteTime)
{
DualTree tree = new DualTree(500);
CreateSpatialIndexTree creator = new CreateSpatialIndexTree(shpFile, tree, (IEnvelope)(new Envelope(shpFile.Header.Xmin, shpFile.Header.Ymin, shpFile.Header.Xmax, shpFile.Header.Ymax)));
if (_useGUI)
{
IProgressTaskDialog progress = ProgressDialog.CreateProgressDialogInstance();
if (progress != null && progress.UserInteractive)
{
progress.Text = "Create Spatial Index...";
progress.ShowProgressDialog(tree, creator.Create());
}
else
{
await creator.Create();
}
}
else
{
await creator.Create();
}
}
gView.Framework.FDB.IIndexTree iTree = null;
if (shpFile.IDX_Exists)
{
iTree = new IDXIndexTree(shpFile.IDX_Filename);
}
ShapeDatasetElement element = new ShapeDatasetElement(shpFile, this, iTree);
_elements.Add(element);
return(element);
}
catch (Exception ex)
{
_errMsg = ex.Message;
}
return(null);
}
