// Undo and redo commands
void UndoBuffer::undo()
{
if (locked)
return;
if (history_position == 0)
{
set_status("Nothing to undo");
return;
}
StatusDelay delay("Undoing " + undo_action());
// Undo most recent command
bool have_command = history[history_position - 1].has_command();
bool ok = process_command(history_position - 1);
if (ok && history_position > 1)
{
if (!have_command)
process_frame(history_position - 2);
process_pos(history_position - 2);
process_state(history_position - 2);
}
if (!ok)
delay.outcome = "failed";
history_position--;
done(&delay);
}
void UndoBuffer::log()
{
#if LOG_UNDO_BUFFER
std::clog << "Undo buffer:\n";
for (int i = 0; i < history.size(); i++)
{
#if 0
// Only log the first 2 items around the current position
if (abs(i - (history_position - 1)) > 2)
continue;
#endif
const UndoBufferEntry& entry = history[i];
if (i == history_position)
std::clog << ">-------------\n";
std::clog << i << '\t';
bool first_line = true;
for (StringStringAssocIter iter(entry); iter.ok(); iter++)
{
if (!first_line)
std::clog << "\n\t";
std::clog << iter.key() << " = " << quote(iter.value());
first_line = false;
}
std::clog << "\n";
}
#if 0
std::clog << "Collector:";
for (StringStringAssocIter iter(collector); iter.ok(); iter++)
std::clog << "\n\t" << iter.key() << " = " << quote(iter.value());
std::clog << "\n";
#endif
if (undo_action() != NO_GDB_ANSWER)
std::clog << "Undo " << undo_action() << "\n";
if (redo_action() != NO_GDB_ANSWER)
std::clog << "Redo " << redo_action() << "\n";
std::clog << "Allocated " << allocation() << " bytes\n";
std::clog << "\n";
#endif
}
int main()
{
goods_t *myShelf = create_shelf(100);
goods_t *previousshelf = create_shelf(100);
int loop = 1;
while (loop)
{
menu();
char option = read_char();
switch(option)
{
case 'A':
{
get_old_shelf(previousshelf, myShelf);
add_to_shelf_IO(myShelf);
break;
}
case 'R':
{
get_old_shelf(previousshelf, myShelf);
char remove = 'r';
show_page_IO(myShelf, remove);
break;
}
case 'E':
{
char edit = 'e';
show_page_IO(myShelf, edit);
break;
}
case 'U':
undo_action(previousshelf, myShelf);
printf("\n\tYou have undone your latest action");
break;
case 'L':
{
char list = 'l';
show_page_IO(myShelf, list);
break;
}
case 'x':
exit_program();
break;
default:
printf("\n\nInvalid input _");
break;
}
}
return 0;
}
void FadeStrength::cancel_action()
{
finish_hold();
undo_action();
}
void FadeBend::cancel_action()
{
finish_hold();
undo_action();
}
void FadeRange::cancel_action()
{
finish_hold();
undo_action();
}
void MoveMarker::cancel_action()
{
finish_hold();
undo_action();
}
