X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/70050c82fe8114fc5d86591035e71751bac21cc6..27c78e4552aaefac9a4db0d4453eff09cdfef2ad:/src/common/cmdproc.cpp diff --git a/src/common/cmdproc.cpp b/src/common/cmdproc.cpp index c2d44c895b..259d3e0ff7 100644 --- a/src/common/cmdproc.cpp +++ b/src/common/cmdproc.cpp @@ -5,7 +5,7 @@ // Modified by: // Created: 05.11.00 // RCS-ID: $Id$ -// Copyright: (c) wxWindows team +// Copyright: (c) wxWidgets team // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// @@ -17,10 +17,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "cmdproc.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -53,10 +49,6 @@ wxCommand::wxCommand(bool canUndoIt, const wxString& name) m_commandName = name; } -wxCommand::~wxCommand() -{ -} - // ---------------------------------------------------------------------------- // Command processor // ---------------------------------------------------------------------------- @@ -64,10 +56,14 @@ wxCommand::~wxCommand() wxCommandProcessor::wxCommandProcessor(int maxCommands) { m_maxNoCommands = maxCommands; - m_currentCommand = (wxNode *) NULL; #if wxUSE_MENUS m_commandEditMenu = (wxMenu *) NULL; #endif // wxUSE_MENUS + m_undoAccelerator = wxT("\tCtrl+Z"); + m_redoAccelerator = wxT("\tCtrl+Y"); + + m_lastSavedCommand = + m_currentCommand = wxList::compatibility_iterator(); } wxCommandProcessor::~wxCommandProcessor() @@ -87,30 +83,41 @@ bool wxCommandProcessor::UndoCommand(wxCommand& cmd) // Pass a command to the processor. The processor calls Do(); // if successful, is appended to the command history unless -// storeIt is FALSE. +// storeIt is false. bool wxCommandProcessor::Submit(wxCommand *command, bool storeIt) { - wxCHECK_MSG( command, FALSE, _T("no command in wxCommandProcessor::Submit") ); + wxCHECK_MSG( command, false, _T("no command in wxCommandProcessor::Submit") ); if ( !DoCommand(*command) ) - return FALSE; + { + // the user code expects the command to be deleted anyhow + delete command; + + return false; + } if ( storeIt ) Store(command); + else + delete command; - return TRUE; + return true; } void wxCommandProcessor::Store(wxCommand *command) { 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(); + wxList::compatibility_iterator firstNode = m_commands.GetFirst(); + wxCommand *firstCommand = (wxCommand *)firstNode->GetData(); delete firstCommand; - delete firstNode; + m_commands.Erase(firstNode); + + // Make sure m_lastSavedCommand won't point to freed memory + if ( m_lastSavedCommand == firstNode ) + m_lastSavedCommand = wxList::compatibility_iterator(); } // Correct a bug: we must chop off the current 'branch' @@ -119,18 +126,23 @@ void wxCommandProcessor::Store(wxCommand *command) ClearCommands(); else { - wxNode *node = m_currentCommand->Next(); + wxList::compatibility_iterator node = m_currentCommand->GetNext(); while (node) { - wxNode *next = node->Next(); - delete (wxCommand *)node->Data(); - delete node; + wxList::compatibility_iterator next = node->GetNext(); + delete (wxCommand *)node->GetData(); + m_commands.Erase(node); + + // Make sure m_lastSavedCommand won't point to freed memory + if ( m_lastSavedCommand == node ) + m_lastSavedCommand = wxList::compatibility_iterator(); + node = next; } } m_commands.Append(command); - m_currentCommand = m_commands.Last(); + m_currentCommand = m_commands.GetLast(); SetMenuStrings(); } @@ -141,30 +153,39 @@ bool wxCommandProcessor::Undo() { if ( UndoCommand(*command) ) { - m_currentCommand = m_currentCommand->Previous(); + m_currentCommand = m_currentCommand->GetPrevious(); SetMenuStrings(); - return TRUE; + return true; } } - return FALSE; + return false; } bool wxCommandProcessor::Redo() { wxCommand *redoCommand = (wxCommand *) NULL; - wxNode *redoNode = (wxNode *) NULL; - if (m_currentCommand && m_currentCommand->Next()) + wxList::compatibility_iterator redoNode +#if !wxUSE_STL + = NULL // just to avoid warnings +#endif // !wxUSE_STL + ; + + if ( m_currentCommand ) { - redoCommand = (wxCommand *)m_currentCommand->Next()->Data(); - redoNode = m_currentCommand->Next(); + // is there anything to redo? + if ( m_currentCommand->GetNext() ) + { + redoCommand = (wxCommand *)m_currentCommand->GetNext()->GetData(); + redoNode = m_currentCommand->GetNext(); + } } - else + 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(); } } @@ -175,10 +196,10 @@ bool wxCommandProcessor::Redo() { m_currentCommand = redoNode; SetMenuStrings(); - return TRUE; + return true; } } - return FALSE; + return false; } bool wxCommandProcessor::CanUndo() const @@ -190,21 +211,21 @@ bool wxCommandProcessor::CanUndo() const bool wxCommandProcessor::CanRedo() const { - if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() == (wxNode*) NULL)) - return FALSE; + if (m_currentCommand && !m_currentCommand->GetNext()) + return false; - if ((m_currentCommand != (wxNode*) NULL) && (m_currentCommand->Next() != (wxNode*) NULL)) - return TRUE; + if (m_currentCommand && m_currentCommand->GetNext()) + return true; - if ((m_currentCommand == (wxNode*) NULL) && (m_commands.Number() > 0)) - return TRUE; + if (!m_currentCommand && (m_commands.GetCount() > 0)) + return true; - return FALSE; + return false; } void wxCommandProcessor::Initialize() { - m_currentCommand = m_commands.Last(); + m_currentCommand = m_commands.GetLast(); SetMenuStrings(); } @@ -213,74 +234,92 @@ void wxCommandProcessor::SetMenuStrings() #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.empty()) 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.empty()) redoCommandName = _("Unnamed command"); + buf = wxString(_("&Redo ")) + redoCommandName + m_redoAccelerator; } 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.empty()) redoCommandName = _("Unnamed command"); + buf = wxString(_("&Redo ")) + redoCommandName + m_redoAccelerator; + } + } + return buf; } void wxCommandProcessor::ClearCommands() { - wxNode *node = m_commands.First(); + wxList::compatibility_iterator node = m_commands.GetFirst(); while (node) { - wxCommand *command = (wxCommand *)node->Data(); + wxCommand *command = (wxCommand *)node->GetData(); delete command; - delete node; - node = m_commands.First(); + m_commands.Erase(node); + node = m_commands.GetFirst(); } - m_currentCommand = (wxNode *) NULL; + + m_currentCommand = wxList::compatibility_iterator(); + m_lastSavedCommand = wxList::compatibility_iterator(); }