some != NULL checks

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

diff --git a/src/common/docview.cpp b/src/common/docview.cpp
index 544e8468d3b379eb5ddc23c21ce61511ae3e2733..1f8003aff7ff218e988cb7be9e79bb1b78fdfa90 100644 (file)
--- a/src/common/docview.cpp
+++ b/src/common/docview.cpp
@@ -76,7 +76,6 @@
 // wxWindows macros
 // ----------------------------------------------------------------------------
 
-#if !USE_SHARED_LIBRARY
     IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
     IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
     IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
@@ -91,7 +90,6 @@
     IMPLEMENT_CLASS(wxCommand, wxObject)
     IMPLEMENT_DYNAMIC_CLASS(wxCommandProcessor, wxObject)
     IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
-#endif
 
 // ----------------------------------------------------------------------------
 // function prototypes
@@ -293,7 +291,7 @@ bool wxDocument::OnSaveDocument(const wxString& file)
     if (store.fail() || store.bad())
 #else
     wxFileOutputStream store(wxString(file.fn_str()));
-    if (store.LastError() != 0)
+    if (store.LastError() != wxSTREAM_NOERROR)
 #endif
     {
         (void)wxMessageBox(_("Sorry, could not open this file for saving."), msgTitle, wxOK | wxICON_EXCLAMATION,
@@ -329,14 +327,20 @@ bool wxDocument::OnOpenDocument(const wxString& file)
     if (store.fail() || store.bad())
 #else
     wxFileInputStream store(wxString(file.fn_str()));
-    if (store.LastError() != 0)
+    if (store.LastError() != wxSTREAM_NOERROR)
 #endif
     {
         (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK|wxICON_EXCLAMATION,
                            GetDocumentWindow());
         return FALSE;
     }
+#if wxUSE_STD_IOSTREAM
     if (!LoadObject(store))
+#else
+    int res = LoadObject(store).LastError();
+    if ((res != wxSTREAM_NOERROR) &&
+        (res != wxSTREAM_EOF))
+#endif
     {
         (void)wxMessageBox(_("Sorry, could not open this file."), msgTitle, wxOK|wxICON_EXCLAMATION,
                            GetDocumentWindow());
@@ -522,13 +526,13 @@ wxView::wxView()
     //  SetDocument(doc);
     m_viewDocument = (wxDocument*) NULL;
 
-    m_viewTypeName = "";
+    m_viewTypeName = wxT("");
     m_viewFrame = (wxFrame *) NULL;
 }
 
 wxView::~wxView()
 {
-    GetDocumentManager()->ActivateView(this, FALSE, TRUE);
+//    GetDocumentManager()->ActivateView(this, FALSE, TRUE);
     m_viewDocument->RemoveView(this);
 }
 
@@ -558,10 +562,11 @@ void wxView::OnChangeFilename()
 {
     if (GetFrame() && GetDocument())
     {
-        wxString name;
-        GetDocument()->GetPrintableName(name);
+        wxString title;
+
+        GetDocument()->GetPrintableName(title);
 
-        GetFrame()->SetTitle(name);
+        GetFrame()->SetTitle(title);
     }
 }
 
@@ -692,13 +697,29 @@ BEGIN_EVENT_TABLE(wxDocManager, wxEvtHandler)
     EVT_MENU(wxID_SAVEAS, wxDocManager::OnFileSaveAs)
     EVT_MENU(wxID_UNDO, wxDocManager::OnUndo)
     EVT_MENU(wxID_REDO, wxDocManager::OnRedo)
+
+    EVT_UPDATE_UI(wxID_OPEN, wxDocManager::OnUpdateFileOpen)
+    EVT_UPDATE_UI(wxID_CLOSE, wxDocManager::OnUpdateFileClose)
+    EVT_UPDATE_UI(wxID_REVERT, wxDocManager::OnUpdateFileRevert)
+    EVT_UPDATE_UI(wxID_NEW, wxDocManager::OnUpdateFileNew)
+    EVT_UPDATE_UI(wxID_SAVE, wxDocManager::OnUpdateFileSave)
+    EVT_UPDATE_UI(wxID_SAVEAS, wxDocManager::OnUpdateFileSaveAs)
+    EVT_UPDATE_UI(wxID_UNDO, wxDocManager::OnUpdateUndo)
+    EVT_UPDATE_UI(wxID_REDO, wxDocManager::OnUpdateRedo)
+
 #if wxUSE_PRINTING_ARCHITECTURE
     EVT_MENU(wxID_PRINT, wxDocManager::OnPrint)
     EVT_MENU(wxID_PRINT_SETUP, wxDocManager::OnPrintSetup)
     EVT_MENU(wxID_PREVIEW, wxDocManager::OnPreview)
+
+    EVT_UPDATE_UI(wxID_PRINT, wxDocManager::OnUpdatePrint)
+    EVT_UPDATE_UI(wxID_PRINT_SETUP, wxDocManager::OnUpdatePrintSetup)
+    EVT_UPDATE_UI(wxID_PREVIEW, wxDocManager::OnUpdatePreview)
 #endif
 END_EVENT_TABLE()
 
+wxDocManager* wxDocManager::sm_docManager = (wxDocManager*) NULL;
+
 wxDocManager::wxDocManager(long flags, bool initialize)
 {
     m_defaultDocumentNameCounter = 1;
@@ -708,6 +729,7 @@ wxDocManager::wxDocManager(long flags, bool initialize)
     m_fileHistory = (wxFileHistory *) NULL;
     if (initialize)
         Initialize();
+    sm_docManager = this;
 }
 
 wxDocManager::~wxDocManager()
@@ -715,6 +737,7 @@ wxDocManager::~wxDocManager()
     Clear();
     if (m_fileHistory)
         delete m_fileHistory;
+    sm_docManager = (wxDocManager*) NULL;
 }
 
 bool wxDocManager::Clear(bool force)
@@ -885,6 +908,71 @@ void wxDocManager::OnRedo(wxCommandEvent& WXUNUSED(event))
         doc->GetCommandProcessor()->Redo();
 }
 
+// Handlers for UI update commands
+
+void wxDocManager::OnUpdateFileOpen(wxUpdateUIEvent& event)
+{
+    event.Enable( TRUE );
+}
+
+void wxDocManager::OnUpdateFileClose(wxUpdateUIEvent& event)
+{
+    wxDocument *doc = GetCurrentDocument();
+    event.Enable( (doc != (wxDocument*) NULL) );
+}
+
+void wxDocManager::OnUpdateFileRevert(wxUpdateUIEvent& event)
+{
+    wxDocument *doc = GetCurrentDocument();
+    event.Enable( (doc != (wxDocument*) NULL) );
+}
+
+void wxDocManager::OnUpdateFileNew(wxUpdateUIEvent& event)
+{
+    event.Enable( TRUE );
+}
+
+void wxDocManager::OnUpdateFileSave(wxUpdateUIEvent& event)
+{
+    wxDocument *doc = GetCurrentDocument();
+    event.Enable( (doc != (wxDocument*) NULL) );
+}
+
+void wxDocManager::OnUpdateFileSaveAs(wxUpdateUIEvent& event)
+{
+    wxDocument *doc = GetCurrentDocument();
+    event.Enable( (doc != (wxDocument*) NULL) );
+}
+
+void wxDocManager::OnUpdateUndo(wxUpdateUIEvent& event)
+{
+    wxDocument *doc = GetCurrentDocument();
+    event.Enable( (doc && doc->GetCommandProcessor() && doc->GetCommandProcessor()->CanUndo()) );
+}
+
+void wxDocManager::OnUpdateRedo(wxUpdateUIEvent& event)
+{
+    wxDocument *doc = GetCurrentDocument();
+    event.Enable( (doc && doc->GetCommandProcessor() && doc->GetCommandProcessor()->CanRedo()) );
+}
+
+void wxDocManager::OnUpdatePrint(wxUpdateUIEvent& event)
+{
+    wxDocument *doc = GetCurrentDocument();
+    event.Enable( (doc != (wxDocument*) NULL) );
+}
+
+void wxDocManager::OnUpdatePrintSetup(wxUpdateUIEvent& event)
+{
+    event.Enable( TRUE );
+}
+
+void wxDocManager::OnUpdatePreview(wxUpdateUIEvent& event)
+{
+    wxDocument *doc = GetCurrentDocument();
+    event.Enable( (doc != (wxDocument*) NULL) );
+}
+
 wxView *wxDocManager::GetCurrentView() const
 {
     if (m_currentView)
@@ -1089,6 +1177,24 @@ bool wxDocManager::MakeDefaultName(wxString& name)
     return TRUE;
 }
 
+// Make a frame title (override this to do something different)
+// If docName is empty, a document is not currently active.
+wxString wxDocManager::MakeFrameTitle(wxDocument* doc)
+{
+    wxString appName = wxTheApp->GetAppName();
+    wxString title;
+    if (!doc)
+        title = appName;
+    else
+    {
+        wxString docName;
+        doc->GetPrintableName(docName);
+        title = docName + wxString(_(" - ")) + appName;
+    }
+    return title;
+}
+
+
 // Not yet implemented
 wxDocTemplate *wxDocManager::MatchTemplate(const wxString& WXUNUSED(path))
 {
@@ -1191,7 +1297,7 @@ wxDocTemplate *wxDocManager::FindTemplateForPath(const wxString& path)
 // template extension.
 
 wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
-#ifdef __WXMSW__
+#if defined(__WXMSW__) || defined(__WXGTK__)
                                                 int noTemplates,
 #else
                                                 int WXUNUSED(noTemplates),
@@ -1200,8 +1306,8 @@ wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
                                                 long WXUNUSED(flags),
                                                 bool WXUNUSED(save))
 {
-    // We can only have multiple filters in Windows
-#ifdef __WXMSW__
+    // We can only have multiple filters in Windows and GTK
+#if defined(__WXMSW__) || defined(__WXGTK__)
     wxString descrBuf;
 
     int i;
@@ -1236,9 +1342,6 @@ wxDocTemplate *wxDocManager::SelectDocumentPath(wxDocTemplate **templates,
         m_lastDirectory = wxPathOnly(pathTmp);
 
         path = pathTmp;
-        wxString theExt = FindExtension(path);
-        if (!theExt)
-            return (wxDocTemplate *) NULL;
 
         // This is dodgy in that we're selecting the template on the
         // basis of the file extension, which may not be a standard
@@ -1989,7 +2092,7 @@ void wxFileHistory::Load(wxConfigBase& config)
         m_fileHistory[m_fileHistoryN] = copystring((const wxChar*) historyFile);
         m_fileHistoryN ++;
         buf.Printf(wxT("file%d"), m_fileHistoryN+1);
-        historyFile = "";
+        historyFile = wxT("");
     }
     AddFilesToMenu();
 }
@@ -2088,6 +2191,42 @@ bool wxTransferStreamToFile(istream& stream, const wxString& filename)
     fclose (fd1);
     return TRUE;
 }
+#else
+bool wxTransferFileToStream(const wxString& filename, wxOutputStream& stream)
+{
+    FILE *fd1;
+    int ch;
+
+    if ((fd1 = fopen (filename.fn_str(), "rb")) == NULL)
+        return FALSE;
+
+    while ((ch = getc (fd1)) != EOF)
+        stream.PutC((char) ch);
+
+    fclose (fd1);
+    return TRUE;
+}
+
+bool wxTransferStreamToFile(wxInputStream& stream, const wxString& filename)
+{
+    FILE *fd1;
+    char ch;
+
+    if ((fd1 = fopen (filename.fn_str(), "wb")) == NULL)
+    {
+        return FALSE;
+    }
+
+    int len = stream.StreamSize();
+    // TODO: is this the correct test for EOF?
+    while (stream.TellI() < (len - 1))
+    {
+        ch = stream.GetC();
+        putc (ch, fd1);
+    }
+    fclose (fd1);
+    return TRUE;
+}
 #endif
 
 #endif // wxUSE_DOC_VIEW_ARCHITECTURE