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killustrator'CommandHistory (./koffice/killustrator/share/CommandHistory.h:32)

class CommandHistory : public QObject {
  Q_OBJECT

public:
  CommandHistory ();
  ~CommandHistory() {};

  void addCommand (Command *cmd, bool exec = false);
  void undo ();
  void redo ();

  void reset ();

  bool isUndoPossible() const { return (index > 0); } 
  bool isRedoPossible() const { return (index < history.count()); }

  QString getUndoName(); 
  QString getRedoName();

  void dump ();

signals:
  void changed(bool undoPossible, bool redoPossible);

private:
  QList<Command> history;
  unsigned int index;
};

killustrator'CommandHistory::CommandHistory() (./koffice/killustrator/share/CommandHistory.cc:33)

CommandHistory::CommandHistory () {
  index = 0;
  history.setAutoDelete (true);
}

killustrator'CommandHistory::addCommand() (./koffice/killustrator/share/CommandHistory.cc:38)

void CommandHistory::addCommand (Command *cmd, bool exec) {
  if (exec)
    cmd->execute ();
  // remove all command objects "behind" the current command 
  unsigned int num = history.count ();
  for (unsigned int i = index; i < num; i++)
    history.remove (index);

  history.append (cmd);
  if (history.count () > MAX_HISTSIZE)
    history.removeFirst ();
  else
    index++;

  emit changed(isUndoPossible(), isRedoPossible());
}

killustrator'CommandHistory::undo() (./koffice/killustrator/share/CommandHistory.cc:55)

void CommandHistory::undo () {
  if (index > 0) {
    // get the last executed command
    Command* cmd = history.at (index - 1);
    // undo it
    cmd->unexecute ();
    // and update the history list
    index--;
    emit changed(isUndoPossible(), isRedoPossible());
  }
}

killustrator'CommandHistory::redo() (./koffice/killustrator/share/CommandHistory.cc:67)

void CommandHistory::redo () {
  if (index < history.count ()) {
    Command* cmd = history.at (index);
    cmd->execute ();
    index++;
    emit changed(isUndoPossible(), isRedoPossible());
  }
}

killustrator'CommandHistory::reset() (./koffice/killustrator/share/CommandHistory.cc:76)

void CommandHistory::reset () {
  history.clear ();
  index = 0;
  emit changed(false, false);
}

killustrator'CommandHistory::getUndoName() (./koffice/killustrator/share/CommandHistory.cc:82)

QString CommandHistory::getUndoName()
{
  if (index > 0) {
    Command* cmd = history.at (index - 1);
    return cmd->getName();
  } else 
    return QSTR_NULL;
}

killustrator'CommandHistory::getRedoName() (./koffice/killustrator/share/CommandHistory.cc:91)

QString CommandHistory::getRedoName()
{
  if (index < history.count ())
    return history.at (index)->getName();
  else 
    return QSTR_NULL;
}

killustrator'CommandHistory::dump() (./koffice/killustrator/share/CommandHistory.cc:99)

void CommandHistory::dump () {
  QListIterator<Command> it (history);
  for (it += (index - 1); it.current (); --it)
    cout << it.current ()->getName () << "\n";
  cout << "index = " << index << endl;
}