+ wxDocument::Modify(mod);
+}
+
+PlotFileView*
+PlotFileDocument::getView() const
+{
+ return dynamic_cast<PlotFileView*>(GetFirstView());
+}
+
+//////////////////////////////////////////////////////////////////////////
+//
+// TextFileDocument
+//
+//////////////////////////////////////////////////////////////////////////
+
+IMPLEMENT_DYNAMIC_CLASS(TextFileDocument, wxDocument)
+
+// Since text windows have their own method for saving to/loading from files,
+// we override OnSave/OpenDocument instead of Save/LoadObject
+bool TextFileDocument::OnSaveDocument(const wxString& filename)
+{
+ TextFileView *view = getView();
+ if (! view->getTextCtrl()->SaveFile(filename))
+ return false;
+ Modify(false);
+ return true;