145 lines
2.8 KiB
C++
145 lines
2.8 KiB
C++
/*
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Copyright (C) 2001 Brett Viren & Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#include <iostream>
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#include <pbd/undo.h>
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using namespace std;
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using namespace sigc;
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UndoCommand::UndoCommand ()
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{
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}
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UndoCommand::UndoCommand (const UndoCommand& rhs)
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{
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_name = rhs._name;
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clear ();
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undo_actions.insert(undo_actions.end(),rhs.undo_actions.begin(),rhs.undo_actions.end());
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redo_actions.insert(redo_actions.end(),rhs.redo_actions.begin(),rhs.redo_actions.end());
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}
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UndoCommand&
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UndoCommand::operator= (const UndoCommand& rhs)
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{
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if (this == &rhs) return *this;
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_name = rhs._name;
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clear ();
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undo_actions.insert(undo_actions.end(),rhs.undo_actions.begin(),rhs.undo_actions.end());
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redo_actions.insert(redo_actions.end(),rhs.redo_actions.begin(),rhs.redo_actions.end());
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return *this;
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}
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void
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UndoCommand::add_undo (const UndoAction& action)
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{
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undo_actions.push_back (action);
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}
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void
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UndoCommand::add_redo (const UndoAction& action)
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{
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redo_actions.push_back (action);
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redo_actions.back()(); // operator()
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}
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void
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UndoCommand::add_redo_no_execute (const UndoAction& action)
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{
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redo_actions.push_back (action);
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}
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void
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UndoCommand::clear ()
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{
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undo_actions.clear ();
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redo_actions.clear ();
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}
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void
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UndoCommand::undo ()
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{
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for (list<UndoAction>::reverse_iterator i = undo_actions.rbegin(); i != undo_actions.rend(); ++i) {
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(*i)();
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}
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}
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void
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UndoCommand::redo ()
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{
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for (list<UndoAction>::iterator i = redo_actions.begin(); i != redo_actions.end(); ++i) {
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(*i)();
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}
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}
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void
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UndoHistory::add (UndoCommand uc)
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{
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UndoList.push_back (uc);
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}
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void
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UndoHistory::undo (unsigned int n)
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{
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while (n--) {
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if (UndoList.size() == 0) {
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return;
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}
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UndoCommand uc = UndoList.back ();
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UndoList.pop_back ();
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uc.undo ();
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RedoList.push_back (uc);
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}
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}
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void
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UndoHistory::redo (unsigned int n)
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{
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while (n--) {
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if (RedoList.size() == 0) {
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return;
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}
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UndoCommand cmd = RedoList.back ();
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RedoList.pop_back ();
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cmd.redo ();
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UndoList.push_back (cmd);
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}
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}
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void
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UndoHistory::clear_redo ()
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{
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RedoList.clear ();
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}
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void
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UndoHistory::clear_undo ()
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{
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UndoList.clear ();
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}
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void
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UndoHistory::clear ()
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{
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RedoList.clear ();
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UndoList.clear ();
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}
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