2 #include <ardour/state_manager.h>
6 using namespace ARDOUR;
10 bool StateManager::_allow_save = true;
11 sigc::signal<void,const char*> StateManager::SaveAllowed;
13 StateManager::StateManager ()
15 _current_state_id = 0;
18 StateManager::~StateManager()
23 StateManager::prohibit_save ()
29 StateManager::allow_save (const char* why, bool do_save)
34 SaveAllowed.slots().erase (SaveAllowed.slots().begin(), SaveAllowed.slots().end());
39 StateManager::drop_all_states ()
41 for (StateMap::iterator i = states.begin(); i != states.end(); ++i) {
47 save_state (_("cleared history"));
51 StateManager::use_state (state_id_t id)
57 for (n = 0, i = states.begin(); n < id && i != states.end(); ++n, ++i);
59 if (n != id || i == states.end()) {
60 fatal << string_compose (_("programming error: illegal state ID (%1) passed to "
61 "StateManager::set_state() (range = 0-%2)"), id, states.size()-1)
67 what_changed = restore_state (**i);
68 _current_state_id = id;
69 send_state_changed (what_changed);
73 StateManager::save_state (std::string why)
75 if (!should_save_state())
79 SaveAllowed.connect (mem_fun (*this, &StateManager::save_state));
83 states.push_back (state_factory (why));
84 _current_state_id = states.size() - 1;
88 StateManager::send_state_changed (Change what_changed)
90 StateChanged (what_changed);