simplify code so it always returns the same object

[wxWidgets.git] / src / common / docview.cpp

diff --git a/src/common/docview.cpp b/src/common/docview.cpp
index 6d6950b008e1b287239c5166e34595275edf7b5f..849a3a275441c4118bb938be714aa01ffd2172fb 100644 (file)
--- a/src/common/docview.cpp
+++ b/src/common/docview.cpp
@@ -60,6 +60,7 @@
 #include "wx/vector.h"
 #include "wx/scopedarray.h"
 #include "wx/scopedptr.h"
+#include "wx/scopeguard.h"
 #include "wx/except.h"
 
 #if wxUSE_STD_IOSTREAM
@@ -75,8 +76,6 @@
     #include "wx/wfstream.h"
 #endif
 
-typedef wxVector<wxDocTemplate *> wxDocTemplates;
-
 // ----------------------------------------------------------------------------
 // wxWidgets macros
 // ----------------------------------------------------------------------------
@@ -397,6 +396,9 @@ bool wxDocument::OnSaveDocument(const wxString& file)
     if ( !DoSaveDocument(file) )
         return false;
 
+    if ( m_commandProcessor )
+        m_commandProcessor->MarkAsSaved();
+
     Modify(false);
     SetFilename(file);
     SetDocumentSaved(true);
@@ -856,17 +858,19 @@ wxDocument *wxDocTemplate::CreateDocument(const wxString& path, long flags)
 bool
 wxDocTemplate::InitDocument(wxDocument* doc, const wxString& path, long flags)
 {
+    wxScopeGuard g = wxMakeObjGuard(*doc, &wxDocument::DeleteAllViews);
+
     doc->SetFilename(path);
     doc->SetDocumentTemplate(this);
     GetDocumentManager()->AddDocument(doc);
     doc->SetCommandProcessor(doc->OnCreateCommandProcessor());
 
-    if (doc->OnCreate(path, flags))
-        return true;
+    if ( !doc->OnCreate(path, flags) )
+        return false;
 
-    if (GetDocumentManager()->GetDocuments().Member(doc))
-        doc->DeleteAllViews();
-    return false;
+    g.Dismiss(); // no need to call DeleteAllViews() anymore
+
+    return true;
 }
 
 wxView *wxDocTemplate::CreateView(wxDocument *doc, long flags)
@@ -1153,26 +1157,27 @@ void wxDocManager::DoOpenMRUFile(unsigned n)
     wxString errMsg; // must contain exactly one "%s" if non-empty
     if ( wxFile::Exists(filename) )
     {
-        // try to open it
-        if ( CreateDocument(filename, wxDOC_SILENT) )
-            return;
-
-        errMsg = _("The file '%s' couldn't be opened.");
+        // Try to open it but don't give an error if it failed: this could be
+        // normal, e.g. because the user cancelled opening it, and we don't
+        // have any useful information to put in the error message anyhow, so
+        // we assume that in case of an error the appropriate message had been
+        // already logged.
+        (void)CreateDocument(filename, wxDOC_SILENT);
     }
     else // file doesn't exist
     {
-        errMsg = _("The file '%s' doesn't exist and couldn't be opened.");
+        OnMRUFileNotExist(n, filename);
     }
+}
 
-
-    wxASSERT_MSG( !errMsg.empty(), "should have an error message" );
-
+void wxDocManager::OnMRUFileNotExist(unsigned n, const wxString& filename)
+{
     // remove the file which we can't open from the MRU list
     RemoveFileFromHistory(n);
 
     // and tell the user about it
-    wxLogError(errMsg + '\n' +
-               _("It has been removed from the most recently used files list."),
+    wxLogError(_("The file '%s' doesn't exist and couldn't be opened.\n"
+                 "It has been removed from the most recently used files list."),
                filename);
 }
 
@@ -1315,10 +1320,14 @@ void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
     if ( !cmdproc )
     {
-        event.Enable(false);
+        // If we don't have any document at all, the menu item should really be
+        // disabled.
+        if ( !GetCurrentDocument() )
+            event.Enable(false);
+        else // But if we do have it, it might handle wxID_UNDO on its own
+            event.Skip();
         return;
     }
-
     event.Enable(cmdproc->CanUndo());
     cmdproc->SetMenuStrings();
 }
@@ -1328,10 +1337,13 @@ void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
     wxCommandProcessor * const cmdproc = GetCurrentCommandProcessor();
     if ( !cmdproc )
     {
-        event.Enable(false);
+        // Use same logic as in OnUpdateUndo() above.
+        if ( !GetCurrentDocument() )
+            event.Enable(false);
+        else
+            event.Skip();
         return;
     }
-
     event.Enable(cmdproc->CanRedo());
     cmdproc->SetMenuStrings();
 }
@@ -1370,11 +1382,11 @@ namespace
 {
 
 // helper function: return only the visible templates
-wxDocTemplates GetVisibleTemplates(const wxList& allTemplates)
+wxDocTemplateVector GetVisibleTemplates(const wxList& allTemplates)
 {
     // select only the visible templates
     const size_t totalNumTemplates = allTemplates.GetCount();
-    wxDocTemplates templates;
+    wxDocTemplateVector templates;
     if ( totalNumTemplates )
     {
         templates.reserve(totalNumTemplates);
@@ -1403,7 +1415,7 @@ void wxDocManager::ActivateDocument(wxDocument *doc)
 
     view->Activate(true);
     if ( wxWindow *win = view->GetFrame() )
-        win->SetFocus();
+        win->Raise();
 }
 
 wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
@@ -1411,7 +1423,7 @@ wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
     // this ought to be const but SelectDocumentType/Path() are not
     // const-correct and can't be changed as, being virtual, this risks
     // breaking user code overriding them
-    wxDocTemplates templates(GetVisibleTemplates(m_templates));
+    wxDocTemplateVector templates(GetVisibleTemplates(m_templates));
     const size_t numTemplates = templates.size();
     if ( !numTemplates )
     {
@@ -1518,7 +1530,7 @@ wxDocument *wxDocManager::CreateDocument(const wxString& pathOrig, long flags)
 
 wxView *wxDocManager::CreateView(wxDocument *doc, long flags)
 {
-    wxDocTemplates templates(GetVisibleTemplates(m_templates));
+    wxDocTemplateVector templates(GetVisibleTemplates(m_templates));
     const size_t numTemplates = templates.size();
 
     if ( numTemplates == 0 )