void UndoRedo::clear_history() {
ERR_FAIL_COND(action_level > 0);
_discard_redo();
while (actions.size())
_pop_history_tail();
//version++;
}
void UndoRedo::clear_history(bool p_increase_version) {
ERR_FAIL_COND(action_level > 0);
_discard_redo();
while (actions.size())
_pop_history_tail();
if (p_increase_version)
version++;
}
void UndoRedo::create_action(const String &p_name, MergeMode p_mode) {
uint32_t ticks = OS::get_singleton()->get_ticks_msec();
if (action_level == 0) {
_discard_redo();
// Check if the merge operation is valid
if (p_mode != MERGE_DISABLE && actions.size() && actions[actions.size() - 1].name == p_name && actions[actions.size() - 1].last_tick + 800 > ticks) {
current_action = actions.size() - 2;
if (p_mode == MERGE_ENDS) {
// Clear all do ops from last action, and delete all object references
List<Operation>::Element *E = actions[current_action + 1].do_ops.front();
while (E) {
if (E->get().type == Operation::TYPE_REFERENCE) {
Object *obj = ObjectDB::get_instance(E->get().object);
if (obj)
memdelete(obj);
}
E = E->next();
actions[current_action + 1].do_ops.pop_front();
}
}
actions[actions.size() - 1].last_tick = ticks;
merge_mode = p_mode;
} else {
Action new_action;
new_action.name = p_name;
new_action.last_tick = ticks;
actions.push_back(new_action);
merge_mode = MERGE_DISABLE;
}
}
action_level++;
}
void UndoRedo::_pop_history_tail() {
_discard_redo();
if (!actions.size())
return;
for (List<Operation>::Element *E = actions[0].undo_ops.front(); E; E = E->next()) {
if (E->get().type == Operation::TYPE_REFERENCE) {
Object *obj = ObjectDB::get_instance(E->get().object);
if (obj)
memdelete(obj);
}
}
actions.remove(0);
current_action--;
}
void UndoRedo::create_action(const String& p_name,bool p_mergeable) {
if (action_level==0) {
_discard_redo();
if (p_mergeable && actions.size() && actions[actions.size()-1].name==p_name) {
//old will replace new (it's mergeable after all)
// should check references though!
current_action=actions.size()-2;
actions[current_action+1].do_ops.clear();
//actions[current_action+1].undo_ops.clear(); - no, this is kept
merging=true;
} else {
Action new_action;
new_action.name=p_name;
actions.push_back(new_action);
merging=false;
}
}
action_level++;
}
