/// <summary>
/// Load circuit templates stored in an external file</summary>
/// <param name="uri">Document URI, or null to present file open dialog to user</param>
/// <returns>Returns the file path used to load the external templates.
/// An empty string indicates no templates were loaded</returns>
protected override ImportedContent LoadExternalTemplateLibrary(Uri uri)
{
string filePath = string.Empty;
if (uri == null)
{
var dlg = new OpenFileDialog();
dlg.Filter = "Circuit Template File (*.circuit)|*.circuit".Localize();
dlg.CheckFileExists = true;
if (dlg.ShowDialog() == DialogResult.OK)
{
uri = new Uri(dlg.FileName, UriKind.RelativeOrAbsolute);
filePath = dlg.FileName;
}
}
else
{
filePath = uri.LocalPath;
}
if (File.Exists(filePath))
{
if (TemplatingContext.ValidateNewFolderUri(uri))
{
// read existing document using standard XML reader
using (FileStream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
{
var reader = new CircuitReader(m_schemaLoader);
var root = reader.Read(stream, uri);
var toFolder = CreateTemplateFolder();
reader.ImportTemplates(toFolder.DomNode, root, uri);
return(new ImportedContent(toFolder.DomNode, uri));
}
}
}
return(new ImportedContent(null, null));
}
