fixed bug with redoing the command when there was nothing to redo

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

diff --git a/src/common/docview.cpp b/src/common/docview.cpp
index 2be69634e84d26fb7c94a107903bd9ea47cc5997..36ecc6a51a70aa25978e168e7b528fe94ee2f564 100644 (file)
--- a/src/common/docview.cpp
+++ b/src/common/docview.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        docview.cpp
+// Name:        src/common/docview.cpp

 // Purpose:     Document/view classes
 // Author:      Julian Smart
 // Modified by:
 // Purpose:     Document/view classes
 // Author:      Julian Smart
 // Modified by:


@@ -57,6 +57,7 @@
 #include "wx/docview.h"
 #include "wx/confbase.h"
 #include "wx/file.h"
 #include "wx/docview.h"
 #include "wx/confbase.h"
 #include "wx/file.h"

+#include "wx/cmdproc.h"

 
 #include <stdio.h>
 #include <string.h>
 
 #include <stdio.h>
 #include <string.h>


@@ -76,20 +77,18 @@
 // wxWindows macros
 // ----------------------------------------------------------------------------
 
 // wxWindows macros
 // ----------------------------------------------------------------------------
 

-    IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
-    IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
-    IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
-    IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
-    IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
-    IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)
+IMPLEMENT_ABSTRACT_CLASS(wxDocument, wxEvtHandler)
+IMPLEMENT_ABSTRACT_CLASS(wxView, wxEvtHandler)
+IMPLEMENT_ABSTRACT_CLASS(wxDocTemplate, wxObject)
+IMPLEMENT_DYNAMIC_CLASS(wxDocManager, wxEvtHandler)
+IMPLEMENT_CLASS(wxDocChildFrame, wxFrame)
+IMPLEMENT_CLASS(wxDocParentFrame, wxFrame)

 
 

-    #if wxUSE_PRINTING_ARCHITECTURE
-        IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
-    #endif
+#if wxUSE_PRINTING_ARCHITECTURE
+    IMPLEMENT_DYNAMIC_CLASS(wxDocPrintout, wxPrintout)
+#endif

 
 

-    IMPLEMENT_CLASS(wxCommand, wxObject)
-    IMPLEMENT_DYNAMIC_CLASS(wxCommandProcessor, wxObject)
-    IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)
+IMPLEMENT_DYNAMIC_CLASS(wxFileHistory, wxObject)

 
 // ----------------------------------------------------------------------------
 // function prototypes
 
 // ----------------------------------------------------------------------------
 // function prototypes


@@ -230,7 +229,7 @@ bool wxDocument::Save()
 {
     bool ret = FALSE;
 
 {
     bool ret = FALSE;
 

-    if (!IsModified()) return TRUE;
+    if (!IsModified() && m_savedYet) return TRUE;

     if (m_documentFile == wxT("") || !m_savedYet)
         ret = SaveAs();
     else
     if (m_documentFile == wxT("") || !m_savedYet)
         ret = SaveAs();
     else


@@ -1742,7 +1741,7 @@ void wxDocParentFrame::OnMRUFile(wxCommandEvent& event)
             // about it
             m_docManager->RemoveFileFromHistory(n);
 
             // about it
             m_docManager->RemoveFileFromHistory(n);
 

-            wxLogError(_("The file '%s' doesn't exist and couldn't be opened.\nIt has been also removed from the MRU files list."),
+            wxLogError(_("The file '%s' doesn't exist and couldn't be opened.\nIt has been removed from the most recently used files list."),

                        filename.c_str());
         }
     }
                        filename.c_str());
         }
     }


@@ -1837,224 +1836,6 @@ void wxDocPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, in
 
 #endif // wxUSE_PRINTING_ARCHITECTURE
 
 
 #endif // wxUSE_PRINTING_ARCHITECTURE
 

-// ----------------------------------------------------------------------------
-// Command processing framework
-// ----------------------------------------------------------------------------
-
-wxCommand::wxCommand(bool canUndoIt, const wxString& name)
-{
-    m_canUndo = canUndoIt;
-    m_commandName = name;
-}
-
-wxCommand::~wxCommand()
-{
-}
-
-// Command processor
-wxCommandProcessor::wxCommandProcessor(int maxCommands)
-{
-    m_maxNoCommands = maxCommands;
-    m_currentCommand = (wxNode *) NULL;
-    m_commandEditMenu = (wxMenu *) NULL;
-    m_undoAccelerator = wxT("\tCtrl+Z");
-    m_redoAccelerator = wxT("\tCtrl+Y");
-}
-
-wxCommandProcessor::~wxCommandProcessor()
-{
-    ClearCommands();
-}
-
-// Pass a command to the processor. The processor calls Do();
-// if successful, is appended to the command history unless
-// storeIt is FALSE.
-bool wxCommandProcessor::Submit(wxCommand *command, bool storeIt)
-{
-    bool success = command->Do();
-    if (success && storeIt)
-    {
-        if (m_commands.Number() == m_maxNoCommands)
-        {
-            wxNode *firstNode = m_commands.First();
-            wxCommand *firstCommand = (wxCommand *)firstNode->Data();
-            delete firstCommand;
-            delete firstNode;
-        }
-
-        // Correct a bug: we must chop off the current 'branch'
-        // so that we're at the end of the command list.
-        if (!m_currentCommand)
-            ClearCommands();
-        else
-        {
-            wxNode *node = m_currentCommand->Next();
-            while (node)
-            {
-                wxNode *next = node->Next();
-                delete (wxCommand *)node->Data();
-                delete node;
-                node = next;
-            }
-        }
-
-        m_commands.Append(command);
-        m_currentCommand = m_commands.Last();
-        SetMenuStrings();
-    }
-    return success;
-}
-
-bool wxCommandProcessor::Undo()
-{
-    if (m_currentCommand)
-    {
-        wxCommand *command = (wxCommand *)m_currentCommand->Data();
-        if (command->CanUndo())
-        {
-            bool success = command->Undo();
-            if (success)
-            {
-                m_currentCommand = m_currentCommand->Previous();
-                SetMenuStrings();
-                return TRUE;
-            }
-        }
-    }
-    return FALSE;
-}
-
-bool wxCommandProcessor::Redo()
-{
-    wxCommand *redoCommand = (wxCommand *) NULL;
-    wxNode *redoNode = (wxNode *) NULL;
-    if (m_currentCommand && m_currentCommand->Next())
-    {
-        redoCommand = (wxCommand *)m_currentCommand->Next()->Data();
-        redoNode = m_currentCommand->Next();
-    }
-    else
-    {
-        if (m_commands.Number() > 0)
-        {
-            redoCommand = (wxCommand *)m_commands.First()->Data();
-            redoNode = m_commands.First();
-        }
-    }
-
-    if (redoCommand)
-    {
-        bool success = redoCommand->Do();
-        if (success)
-        {
-            m_currentCommand = redoNode;
-            SetMenuStrings();
-            return TRUE;
-        }
-    }
-    return FALSE;
-}
-
-bool wxCommandProcessor::CanUndo() const
-{
-    if (m_currentCommand)
-        return ((wxCommand *)m_currentCommand->Data())->CanUndo();
-    return FALSE;
-}
-
-bool wxCommandProcessor::CanRedo() const
-{
-    if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() == (wxNode*) NULL))
-        return FALSE;
-
-    if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() != (wxNode*) NULL))
-        return TRUE;
-
-    if ((m_currentCommand == (wxNode*) NULL) && (m_commands.Number() > 0))
-        return TRUE;
-
-    return FALSE;
-}
-
-void wxCommandProcessor::Initialize()
-{
-    m_currentCommand = m_commands.Last();
-    SetMenuStrings();
-}
-
-void wxCommandProcessor::SetMenuStrings()
-{
-    if (m_commandEditMenu)
-    {
-        wxString buf;
-        if (m_currentCommand)
-        {
-            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 + m_undoAccelerator;
-            else
-                buf = wxString(_("Can't &Undo ")) + commandName + m_undoAccelerator;
-
-            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_redoAccelerator;
-                m_commandEditMenu->SetLabel(wxID_REDO, buf);
-                m_commandEditMenu->Enable(wxID_REDO, TRUE);
-            }
-            else
-            {
-                m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo") + m_redoAccelerator);
-                m_commandEditMenu->Enable(wxID_REDO, FALSE);
-            }
-        }
-        else
-        {
-            m_commandEditMenu->SetLabel(wxID_UNDO, _("&Undo") + m_undoAccelerator);
-            m_commandEditMenu->Enable(wxID_UNDO, FALSE);
-
-            if (m_commands.Number() == 0)
-            {
-                m_commandEditMenu->SetLabel(wxID_REDO, _("&Redo") + m_redoAccelerator);
-                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_redoAccelerator;
-                m_commandEditMenu->SetLabel(wxID_REDO, buf);
-                m_commandEditMenu->Enable(wxID_REDO, TRUE);
-            }
-        }
-    }
-}
-
-void wxCommandProcessor::ClearCommands()
-{
-    wxNode *node = m_commands.First();
-    while (node)
-    {
-        wxCommand *command = (wxCommand *)node->Data();
-        delete command;
-        delete node;
-        node = m_commands.First();
-    }
-    m_currentCommand = (wxNode *) NULL;
-}
-

 // ----------------------------------------------------------------------------
 // File history processor
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // File history processor
 // ----------------------------------------------------------------------------