1 files changed, 99 insertions, 0 deletions
diff --git a/kpovmodeler/pmcommandmanager.cpp b/kpovmodeler/pmcommandmanager.cpp
new file mode 100644
index 00000000..333468e3
--- /dev/null
+++ b/kpovmodeler/pmcommandmanager.cpp
@@ -0,0 +1,99 @@
+/*
+**************************************************************************
+                                 description
+                             --------------------
+    copyright            : (C) 2000-2001 by Andreas Zehender
+    email                : zehender@kde.org
+**************************************************************************
+
+**************************************************************************
+*                                                                        *
+*  This program is free software; you can redistribute it and/or modify  *
+*  it under the terms of the GNU General Public License as published by  *
+*  the Free Software Foundation; either version 2 of the License, or     *
+*  (at your option) any later version.                                   *
+*                                                                        *
+**************************************************************************/
+
+
+#include "pmcommandmanager.h"
+#include "pmpart.h"
+
+PMCommandManager::PMCommandManager( PMPart* thePart )
+{
+   m_commands.setAutoDelete( true );
+   m_redoCommands.setAutoDelete( true );
+   m_maxUndoRedo = 50;
+   m_pPart = thePart;
+}
+
+PMCommandManager::~PMCommandManager( )
+{
+   m_commands.clear( );
+   m_redoCommands.clear( );
+}
+
+void PMCommandManager::execute( PMCommand* cmd )
+{
+   // some commands (like control point commands) can be executed
+   // multiple times.
+   cmd->execute( this );
+   
+   if( m_commands.last( ) != cmd )
+      m_commands.append( cmd );
+   while( m_commands.count( ) > m_maxUndoRedo )
+      m_commands.removeFirst( );
+   m_redoCommands.clear( );
+
+   emit updateUndoRedo( cmd->text( ), QString::null );
+}
+
+void PMCommandManager::undo( )
+{
+   if( !m_commands.isEmpty( ) )
+   {
+      PMCommand* last = m_commands.last( );
+      last->undo( this );
+      
+      m_redoCommands.append( m_commands.take( ) );
+
+      if( m_commands.isEmpty( ) )
+         emit updateUndoRedo( QString::null, last->text( ) );
+      else
+         emit updateUndoRedo( m_commands.last( )->text( ), last->text( ) );
+   }
+}
+
+void PMCommandManager::redo( )
+{
+   if( !m_redoCommands.isEmpty( ) )
+   {
+      PMCommand* last = m_redoCommands.last( );
+      last->execute( this );
+      
+      m_commands.append( m_redoCommands.take( ) );
+      
+      if( m_redoCommands.isEmpty( ) )
+         emit updateUndoRedo( last->text( ), QString::null );
+      else
+         emit updateUndoRedo( last->text( ), m_redoCommands.last( )->text( ) );
+   }
+}
+
+void PMCommandManager::clear( )
+{
+   m_redoCommands.clear( );
+   m_commands.clear( );
+   emit updateUndoRedo( QString::null, QString::null );
+}
+
+void PMCommandManager::cmdObjectChanged( PMObject* obj, const int mode )
+{
+   emit objectChanged( obj, mode, this );
+}
+
+void PMCommandManager::cmdIDChanged( PMObject* obj, const QString& oldID )
+{
+   emit idChanged( obj, oldID );
+}
+#include "pmcommandmanager.moc"