/// <summary>
/// Does a command</summary>
/// <param name="commandTag">Command</param>
public virtual void DoCommand(object commandTag)
{
var iconClicked = false;
if ((CommandService != null) && (CommandService is CommandServiceBase))
{
var commandServiceBase = CommandService as CommandServiceBase;
iconClicked = commandServiceBase.IconClicked;
}
if ((commandTag is RecentDocumentInfo) && (!iconClicked))
{
// User clicked on a document in the MRU to open it.
var info = (RecentDocumentInfo)commandTag;
IDocument document = null;
// info.Type is a user-readable string, so it may have been localized and so no
// longer matches. Try to find the client by matching the file extension.
IDocumentClient client = FindClientFromUri(info.Uri);
if (client != null && client.CanOpen(info.Uri))
{
document = m_documentService.OpenExistingDocument(client, info.Uri);
}
// To-do: If the document can't be opened, it would probably be better to keep the
// document in the list and have a context menu command for removing the link, like
// Microsoft Word does.
if (document == null &&
System.Diagnostics.Debugger.IsAttached == false)
{
RemoveDocument(info);
}
}
else
{
// User either clicked on the Pin command directly, or clicked the pin icon on a document
// entry in the MRU. Either way, treat this as a Pin command.
RecentDocumentInfo info;
if (commandTag is RecentDocumentInfo)
{
info = (RecentDocumentInfo)commandTag;
}
else
{
info = GetActiveRecentDocumentInfo();
}
if (info != null)
{
info.Pinned = !info.Pinned;
}
}
}
// '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);
}
// '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;
}
