Added return NULL; for __WXCOCOA__

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

diff --git a/src/common/cmdproc.cpp b/src/common/cmdproc.cpp
index f6d7eb8dd594b3c3933bcfea240760ced947bfcf..4945bdbe28c0e38cca283e5a2fb77f0b2f13cde9 100644 (file)
--- a/src/common/cmdproc.cpp
+++ b/src/common/cmdproc.cpp
@@ -68,6 +68,8 @@ wxCommandProcessor::wxCommandProcessor(int maxCommands)
 #if wxUSE_MENUS
     m_commandEditMenu = (wxMenu *) NULL;
 #endif // wxUSE_MENUS
 #if wxUSE_MENUS
     m_commandEditMenu = (wxMenu *) NULL;
 #endif // wxUSE_MENUS

+    m_undoAccelerator = wxT("\tCtrl+Z");
+    m_redoAccelerator = wxT("\tCtrl+Y");

 }
 
 wxCommandProcessor::~wxCommandProcessor()
 }
 
 wxCommandProcessor::~wxCommandProcessor()


@@ -93,7 +95,12 @@ bool wxCommandProcessor::Submit(wxCommand *command, bool storeIt)
     wxCHECK_MSG( command, FALSE, _T("no command in wxCommandProcessor::Submit") );
 
     if ( !DoCommand(*command) )
     wxCHECK_MSG( command, FALSE, _T("no command in wxCommandProcessor::Submit") );
 
     if ( !DoCommand(*command) )

+    {
+        // the user code expects the command to be deleted anyhow
+        delete command;
+

         return FALSE;
         return FALSE;

+    }

 
     if ( storeIt )
         Store(command);
 
     if ( storeIt )
         Store(command);


@@ -105,10 +112,10 @@ void wxCommandProcessor::Store(wxCommand *command)
 {
     wxCHECK_RET( command, _T("no command in wxCommandProcessor::Store") );
 
 {
     wxCHECK_RET( command, _T("no command in wxCommandProcessor::Store") );
 

-    if (m_commands.Number() == m_maxNoCommands)
+    if ( (int)m_commands.GetCount() == m_maxNoCommands )

     {
     {

-        wxNode *firstNode = m_commands.First();
-        wxCommand *firstCommand = (wxCommand *)firstNode->Data();
+        wxNode *firstNode = m_commands.GetFirst();
+        wxCommand *firstCommand = (wxCommand *)firstNode->GetData();

         delete firstCommand;
         delete firstNode;
     }
         delete firstCommand;
         delete firstNode;
     }


@@ -119,18 +126,18 @@ void wxCommandProcessor::Store(wxCommand *command)
         ClearCommands();
     else
     {
         ClearCommands();
     else
     {

-        wxNode *node = m_currentCommand->Next();
+        wxNode *node = m_currentCommand->GetNext();

         while (node)
         {
         while (node)
         {

-            wxNode *next = node->Next();
-            delete (wxCommand *)node->Data();
+            wxNode *next = node->GetNext();
+            delete (wxCommand *)node->GetData();

             delete node;
             node = next;
         }
     }
 
     m_commands.Append(command);
             delete node;
             node = next;
         }
     }
 
     m_commands.Append(command);

-    m_currentCommand = m_commands.Last();
+    m_currentCommand = m_commands.GetLast();

     SetMenuStrings();
 }
 
     SetMenuStrings();
 }
 


@@ -141,7 +148,7 @@ bool wxCommandProcessor::Undo()
     {
         if ( UndoCommand(*command) )
         {
     {
         if ( UndoCommand(*command) )
         {

-            m_currentCommand = m_currentCommand->Previous();
+            m_currentCommand = m_currentCommand->GetPrevious();

             SetMenuStrings();
             return TRUE;
         }
             SetMenuStrings();
             return TRUE;
         }


@@ -158,18 +165,18 @@ bool wxCommandProcessor::Redo()
     if ( m_currentCommand )
     {
         // is there anything to redo?
     if ( m_currentCommand )
     {
         // is there anything to redo?

-        if ( m_currentCommand->Next() )
+        if ( m_currentCommand->GetNext() )

         {
         {

-            redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
-            redoNode = m_currentCommand->Next();
+            redoCommand = (wxCommand *)m_currentCommand->GetNext()->GetData();
+            redoNode = m_currentCommand->GetNext();

         }
     }
     else // no current command, redo the first one
     {
         }
     }
     else // no current command, redo the first one
     {

-        if (m_commands.Number() > 0)
+        if (m_commands.GetCount() > 0)

         {
         {

-            redoCommand = (wxCommand *)m_commands.First()->Data();
-            redoNode = m_commands.First();
+            redoCommand = (wxCommand *)m_commands.GetFirst()->GetData();
+            redoNode = m_commands.GetFirst();

         }
     }
 
         }
     }
 


@@ -195,13 +202,13 @@ bool wxCommandProcessor::CanUndo() const
 
 bool wxCommandProcessor::CanRedo() const
 {
 
 bool wxCommandProcessor::CanRedo() const
 {

-    if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() == (wxNode*) NULL))
+    if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->GetNext() == (wxNode*) NULL))

         return FALSE;
 
         return FALSE;
 

-    if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() != (wxNode*) NULL))
+    if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->GetNext() != (wxNode*) NULL))

         return TRUE;
 
         return TRUE;
 

-    if ((m_currentCommand == (wxNode*) NULL) && (m_commands.Number() > 0))
+    if ((m_currentCommand == (wxNode*) NULL) && (m_commands.GetCount() > 0))

         return TRUE;
 
     return FALSE;
         return TRUE;
 
     return FALSE;


@@ -209,7 +216,7 @@ bool wxCommandProcessor::CanRedo() const
 
 void wxCommandProcessor::Initialize()
 {
 
 void wxCommandProcessor::Initialize()
 {

-    m_currentCommand = m_commands.Last();
+    m_currentCommand = m_commands.GetLast();

     SetMenuStrings();
 }
 
     SetMenuStrings();
 }
 


@@ -218,72 +225,88 @@ void wxCommandProcessor::SetMenuStrings()
 #if wxUSE_MENUS
     if (m_commandEditMenu)
     {
 #if wxUSE_MENUS
     if (m_commandEditMenu)
     {

-        wxString buf;
-        if (m_currentCommand)
+        wxString undoLabel = GetUndoMenuLabel();
+        wxString redoLabel = GetRedoMenuLabel();
+        
+        m_commandEditMenu->SetLabel(wxID_UNDO, undoLabel);
+        m_commandEditMenu->Enable(wxID_UNDO, CanUndo());
+
+        m_commandEditMenu->SetLabel(wxID_REDO, redoLabel);
+        m_commandEditMenu->Enable(wxID_REDO, CanRedo());
+    }
+#endif // wxUSE_MENUS
+}
+
+// Gets the current Undo menu label.
+wxString wxCommandProcessor::GetUndoMenuLabel() const
+{
+    wxString buf;
+    if (m_currentCommand)
+    {
+        wxCommand *command = (wxCommand *)m_currentCommand->GetData();
+        wxString commandName(command->GetName());
+        if (commandName == wxT("")) commandName = _("Unnamed command");
+        bool canUndo = command->CanUndo();
+        if (canUndo)
+            buf = wxString(_("&Undo ")) + commandName + m_undoAccelerator;
+        else
+            buf = wxString(_("Can't &Undo ")) + commandName + m_undoAccelerator;
+    }
+    else
+    {
+        buf = _("&Undo") + m_undoAccelerator;
+    }
+    
+    return buf;
+}
+
+// Gets the current Undo menu label.
+wxString wxCommandProcessor::GetRedoMenuLabel() const
+{
+    wxString buf;
+    if (m_currentCommand)
+    {
+        // We can redo, if we're not at the end of the history.
+        if (m_currentCommand->GetNext())

         {
         {

-            wxCommand *command = (wxCommand *)m_currentCommand->Data();
-            wxString commandName(command->GetName());
-            if (commandName == wxT("")) commandName = _("Unnamed command");
-            bool canUndo = command->CanUndo();
-            if (canUndo)
-                buf = wxString(_("&Undo ")) + commandName;
-            else
-                buf = wxString(_("Can't &Undo ")) + commandName;
-
-            m_commandEditMenu->SetLabel(wxID_UNDO, buf);
-            m_commandEditMenu->Enable(wxID_UNDO, canUndo);
-
-            // We can redo, if we're not at the end of the history.
-            if (m_currentCommand->Next())
-            {
-                wxCommand *redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
-                wxString redoCommandName(redoCommand->GetName());
-                if (redoCommandName == wxT("")) redoCommandName = _("Unnamed command");
-                buf = wxString(_("&Redo ")) + redoCommandName;
-                m_commandEditMenu->SetLabel(wxID_REDO, buf);
-                m_commandEditMenu->Enable(wxID_REDO, TRUE);
-            }
-            else
-            {
-                m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo"));
-                m_commandEditMenu->Enable(wxID_REDO, FALSE);
-            }
+            wxCommand *redoCommand = (wxCommand *)m_currentCommand->GetNext()->GetData();
+            wxString redoCommandName(redoCommand->GetName());
+            if (redoCommandName == wxT("")) redoCommandName = _("Unnamed command");
+            buf = wxString(_("&Redo ")) + redoCommandName + m_redoAccelerator;

         }
         else
         {
         }
         else
         {

-            m_commandEditMenu->SetLabel(wxID_UNDO, _("&Undo"));
-            m_commandEditMenu->Enable(wxID_UNDO, FALSE);
-
-            if (m_commands.Number() == 0)
-            {
-                m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo"));
-                m_commandEditMenu->Enable(wxID_REDO, FALSE);
-            }
-            else
-            {
-                // currentCommand is NULL but there are commands: this means that
-                // we've undone to the start of the list, but can redo the first.
-                wxCommand *redoCommand = (wxCommand *)m_commands.First()->Data();
-                wxString redoCommandName(redoCommand->GetName());
-                if (redoCommandName == wxT("")) redoCommandName = _("Unnamed command");
-                buf = wxString(_("&Redo ")) + redoCommandName;
-                m_commandEditMenu->SetLabel(wxID_REDO, buf);
-                m_commandEditMenu->Enable(wxID_REDO, TRUE);
-            }
+            buf = _("&Redo") + m_redoAccelerator;

         }
     }
         }
     }

-#endif // wxUSE_MENUS
+    else
+    {
+        if (m_commands.GetCount() == 0)
+        {
+            buf = _("&Redo") + m_redoAccelerator;
+        }
+        else
+        {
+            // currentCommand is NULL but there are commands: this means that
+            // we've undone to the start of the list, but can redo the first.
+            wxCommand *redoCommand = (wxCommand *)m_commands.GetFirst()->GetData();
+            wxString redoCommandName(redoCommand->GetName());
+            if (redoCommandName == wxT("")) redoCommandName = _("Unnamed command");
+            buf = wxString(_("&Redo ")) + redoCommandName + m_redoAccelerator;
+        }
+    }
+    return buf;

 }
 
 void wxCommandProcessor::ClearCommands()
 {
 }
 
 void wxCommandProcessor::ClearCommands()
 {

-    wxNode *node = m_commands.First();
+    wxNode *node = m_commands.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxCommand *command = (wxCommand *)node->Data();
+        wxCommand *command = (wxCommand *)node->GetData();

         delete command;
         delete node;
         delete command;
         delete node;

-        node = m_commands.First();
+        node = m_commands.GetFirst();

     }
     m_currentCommand = (wxNode *) NULL;
 }
     }
     m_currentCommand = (wxNode *) NULL;
 }