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Import r67258 of the wxWidgets trunk, which I expect will before
long become wxWidgets 2.9.2, which in turn is expected to be the last 2.9 release before the 3.0 stable release. Since the full wxWidgets distribution is rather large, I have imported only the parts that we use, on a subdirectory basis: art include/wx/*.* include/wx/aui include/wx/cocoa include/wx/generic include/wx/gtk include/wx/meta include/wx/msw include/wx/osx include/wx/persist include/wx/private include/wx/protocol include/wx/unix src/aui src/common src/generic src/gtk src/msw src/osx src/unix git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7380 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Soren Jorvang
331
Externals/wxWidgets3/src/common/cmdproc.cpp
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331
Externals/wxWidgets3/src/common/cmdproc.cpp
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///////////////////////////////////////////////////////////////////////////////
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// Name: src/common/cmdproc.cpp
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// Purpose: wxCommand and wxCommandProcessor classes
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// Author: Julian Smart (extracted from docview.h by VZ)
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// Modified by:
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// Created: 05.11.00
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// RCS-ID: $Id: cmdproc.cpp 66287 2010-11-28 15:14:49Z VZ $
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// Copyright: (c) wxWidgets team
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/intl.h"
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#include "wx/string.h"
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#include "wx/menu.h"
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#include "wx/accel.h"
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#endif //WX_PRECOMP
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#include "wx/cmdproc.h"
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// ============================================================================
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// implementation
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// ============================================================================
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IMPLEMENT_CLASS(wxCommand, wxObject)
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IMPLEMENT_DYNAMIC_CLASS(wxCommandProcessor, wxObject)
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// ----------------------------------------------------------------------------
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// wxCommand
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// ----------------------------------------------------------------------------
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wxCommand::wxCommand(bool canUndoIt, const wxString& name)
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{
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m_canUndo = canUndoIt;
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m_commandName = name;
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}
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// ----------------------------------------------------------------------------
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// Command processor
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// ----------------------------------------------------------------------------
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wxCommandProcessor::wxCommandProcessor(int maxCommands)
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{
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m_maxNoCommands = maxCommands;
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#if wxUSE_MENUS
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m_commandEditMenu = NULL;
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#endif // wxUSE_MENUS
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#if wxUSE_ACCEL
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m_undoAccelerator = '\t' + wxAcceleratorEntry(wxACCEL_CTRL, 'Z').ToString();
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m_redoAccelerator = '\t' + wxAcceleratorEntry(wxACCEL_CTRL, 'Y').ToString();
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#endif // wxUSE_ACCEL
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m_lastSavedCommand =
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m_currentCommand = wxList::compatibility_iterator();
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}
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wxCommandProcessor::~wxCommandProcessor()
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{
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ClearCommands();
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}
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bool wxCommandProcessor::DoCommand(wxCommand& cmd)
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{
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return cmd.Do();
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}
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bool wxCommandProcessor::UndoCommand(wxCommand& cmd)
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{
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return cmd.Undo();
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}
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// Pass a command to the processor. The processor calls Do();
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// if successful, is appended to the command history unless
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// storeIt is false.
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bool wxCommandProcessor::Submit(wxCommand *command, bool storeIt)
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{
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wxCHECK_MSG( command, false, wxT("no command in wxCommandProcessor::Submit") );
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if ( !DoCommand(*command) )
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{
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// the user code expects the command to be deleted anyhow
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delete command;
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return false;
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}
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if ( storeIt )
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Store(command);
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else
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delete command;
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return true;
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}
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void wxCommandProcessor::Store(wxCommand *command)
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{
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wxCHECK_RET( command, wxT("no command in wxCommandProcessor::Store") );
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// Correct a bug: we must chop off the current 'branch'
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// so that we're at the end of the command list.
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if (!m_currentCommand)
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ClearCommands();
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else
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{
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wxList::compatibility_iterator node = m_currentCommand->GetNext();
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while (node)
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{
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wxList::compatibility_iterator next = node->GetNext();
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// Make sure m_lastSavedCommand won't point to freed memory
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if ( m_lastSavedCommand && m_lastSavedCommand == node )
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m_lastSavedCommand = wxList::compatibility_iterator();
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delete (wxCommand *)node->GetData();
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m_commands.Erase(node);
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node = next;
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}
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}
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if ( (int)m_commands.GetCount() == m_maxNoCommands )
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{
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wxList::compatibility_iterator firstNode = m_commands.GetFirst();
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// Make sure m_lastSavedCommand won't point to freed memory
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if ( m_lastSavedCommand && m_lastSavedCommand == firstNode )
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m_lastSavedCommand = wxList::compatibility_iterator();
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wxCommand *firstCommand = (wxCommand *)firstNode->GetData();
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delete firstCommand;
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m_commands.Erase(firstNode);
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}
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m_commands.Append(command);
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m_currentCommand = m_commands.GetLast();
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SetMenuStrings();
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}
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bool wxCommandProcessor::Undo()
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{
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wxCommand *command = GetCurrentCommand();
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if ( command && command->CanUndo() )
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{
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if ( UndoCommand(*command) )
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{
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m_currentCommand = m_currentCommand->GetPrevious();
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SetMenuStrings();
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return true;
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}
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}
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return false;
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}
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bool wxCommandProcessor::Redo()
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{
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wxCommand *redoCommand = NULL;
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wxList::compatibility_iterator redoNode
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#if !wxUSE_STL
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= NULL // just to avoid warnings
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#endif // !wxUSE_STL
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;
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if ( m_currentCommand )
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{
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// is there anything to redo?
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if ( m_currentCommand->GetNext() )
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{
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redoCommand = (wxCommand *)m_currentCommand->GetNext()->GetData();
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redoNode = m_currentCommand->GetNext();
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}
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}
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else // no current command, redo the first one
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{
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if (m_commands.GetCount() > 0)
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{
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redoCommand = (wxCommand *)m_commands.GetFirst()->GetData();
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redoNode = m_commands.GetFirst();
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}
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}
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if (redoCommand)
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{
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bool success = DoCommand(*redoCommand);
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if (success)
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{
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m_currentCommand = redoNode;
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SetMenuStrings();
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return true;
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}
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}
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return false;
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}
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bool wxCommandProcessor::CanUndo() const
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{
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wxCommand *command = GetCurrentCommand();
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return command && command->CanUndo();
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}
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bool wxCommandProcessor::CanRedo() const
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{
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if (m_currentCommand && !m_currentCommand->GetNext())
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return false;
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if (m_currentCommand && m_currentCommand->GetNext())
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return true;
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if (!m_currentCommand && (m_commands.GetCount() > 0))
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return true;
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return false;
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}
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void wxCommandProcessor::Initialize()
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{
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m_currentCommand = m_commands.GetLast();
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SetMenuStrings();
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}
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void wxCommandProcessor::SetMenuStrings()
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{
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#if wxUSE_MENUS
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if (m_commandEditMenu)
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{
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wxString undoLabel = GetUndoMenuLabel();
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wxString redoLabel = GetRedoMenuLabel();
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m_commandEditMenu->SetLabel(wxID_UNDO, undoLabel);
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m_commandEditMenu->Enable(wxID_UNDO, CanUndo());
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m_commandEditMenu->SetLabel(wxID_REDO, redoLabel);
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m_commandEditMenu->Enable(wxID_REDO, CanRedo());
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}
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#endif // wxUSE_MENUS
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}
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// Gets the current Undo menu label.
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wxString wxCommandProcessor::GetUndoMenuLabel() const
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{
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wxString buf;
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if (m_currentCommand)
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{
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wxCommand *command = (wxCommand *)m_currentCommand->GetData();
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wxString commandName(command->GetName());
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if (commandName.empty()) commandName = _("Unnamed command");
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bool canUndo = command->CanUndo();
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if (canUndo)
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buf = wxString(_("&Undo ")) + commandName + m_undoAccelerator;
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else
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buf = wxString(_("Can't &Undo ")) + commandName + m_undoAccelerator;
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}
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else
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{
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buf = _("&Undo") + m_undoAccelerator;
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}
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return buf;
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}
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// Gets the current Undo menu label.
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wxString wxCommandProcessor::GetRedoMenuLabel() const
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{
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wxString buf;
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if (m_currentCommand)
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{
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// We can redo, if we're not at the end of the history.
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if (m_currentCommand->GetNext())
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{
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wxCommand *redoCommand = (wxCommand *)m_currentCommand->GetNext()->GetData();
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wxString redoCommandName(redoCommand->GetName());
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if (redoCommandName.empty()) redoCommandName = _("Unnamed command");
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buf = wxString(_("&Redo ")) + redoCommandName + m_redoAccelerator;
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}
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else
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{
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buf = _("&Redo") + m_redoAccelerator;
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}
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}
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else
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{
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if (m_commands.GetCount() == 0)
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{
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buf = _("&Redo") + m_redoAccelerator;
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}
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else
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{
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// currentCommand is NULL but there are commands: this means that
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// we've undone to the start of the list, but can redo the first.
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wxCommand *redoCommand = (wxCommand *)m_commands.GetFirst()->GetData();
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wxString redoCommandName(redoCommand->GetName());
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if (redoCommandName.empty()) redoCommandName = _("Unnamed command");
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buf = wxString(_("&Redo ")) + redoCommandName + m_redoAccelerator;
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}
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}
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return buf;
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}
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void wxCommandProcessor::ClearCommands()
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{
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wxList::compatibility_iterator node = m_commands.GetFirst();
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while (node)
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{
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wxCommand *command = (wxCommand *)node->GetData();
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delete command;
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m_commands.Erase(node);
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node = m_commands.GetFirst();
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}
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m_currentCommand = wxList::compatibility_iterator();
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m_lastSavedCommand = wxList::compatibility_iterator();
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}
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