// 'Safe' in the sense that all exceptions are caught (and reported via OnOpenException).
private IDocument SafeOpen(IDocumentClient client, Uri uri)
{
IDocument document = null;
try
{
if (client.CanOpen(uri))
{
if (OnDocumentOpening(uri))
{
document = client.Open(uri);
if (document != null)
{
OnDocumentOpened(document);
DocumentOpened.Raise(this, new DocumentEventArgs(document, DocumentEventType.Opened));
DocumentRegistry.ActiveDocument = document;
}
}
}
}
catch (Exception ex)
{
// DAN: Added this - if an exception occurs during line:
// DocumentRegistry.ActiveDocument = document;
// then we need to remove it
if (DocumentRegistry.ActiveDocument == document)
{
DocumentRegistry.Remove(document);
}
document = null;
// Let's share the exception directly. We used to wrap it in another Exception
// object but this hides the actual exception in the error dialog.
OnOpenException(ex);
}
return(document);
}
/// <summary>
/// Saves the document under a new name, chosen by the user</summary>
/// <param name="document">Document to save</param>
/// <returns>True if document was successfully saved and false if the user cancelled
/// or there was some kind of problem</returns>
/// <remarks>All exceptions are caught and reported via OnSaveException().</remarks>
public virtual bool SaveAs(IDocument document)
{
IDocumentClient client = GetClient(document);
string oldFilePath = document.Uri.LocalPath;
string newFilePath = PromptUserForNewFilePath(client, oldFilePath, document);
if (newFilePath != null)
{
// change file dialog service's initial directory
FileDialogService.InitialDirectory = Path.GetDirectoryName(newFilePath);
// restore old URI in case of failure
Uri oldUri = document.Uri;
Uri newUri = new Uri(newFilePath);
document.Uri = newUri;
bool success = SafeSave(document, DocumentEventType.SavedAs);
if (success)
{
// remove and replace the document to signal that this is a new document
DocumentRegistry.Remove(document);
DocumentRegistry.ActiveDocument = document;
m_untitledDocuments.Remove(document); // in case it was untitled
m_newDocumentPaths.Remove(oldFilePath);
}
else
{
document.Uri = oldUri;
}
return(success);
}
return(false);
}
