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never save more than Config->get_saved_history_depth() undo transactions to history file

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git-svn-id: svn://localhost/ardour2/trunk@1200 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis
2006-12-11 12:52:40 +00:00
parent 337cee7a83
commit ee0fb82da6
4 changed files with 35 additions and 11 deletions
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2
libs/pbd/pbd/undo.h
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@@ -94,7 +94,7 @@ class UndoHistory : public sigc::trackable
void clear_undo ();
void clear_redo ();
XMLNode &get_state();
XMLNode &get_state(uint32_t depth = 0);
void save_state();
sigc::signal<void> Changed;

26
libs/pbd/undo.cc
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@@ -236,13 +236,31 @@ UndoHistory::clear ()
Changed (); /* EMIT SIGNAL */
}
XMLNode & UndoHistory::get_state()
XMLNode&
UndoHistory::get_state (uint32_t depth)
{
XMLNode *node = new XMLNode ("UndoHistory");
list<UndoTransaction*>::iterator it;
for (it = UndoList.begin(); it != UndoList.end(); it++) {
node->add_child_nocopy((*it)->get_state());
if (depth == 0) {
/* everything */
for (list<UndoTransaction*>::iterator it = UndoList.begin(); it != UndoList.end(); ++it) {
node->add_child_nocopy((*it)->get_state());
}
} else {
/* just the last "depth" transactions */
list<UndoTransaction*> in_order;
for (list<UndoTransaction*>::reverse_iterator it = UndoList.rbegin(); it != UndoList.rend() && depth; ++it, depth--) {
in_order.push_front (*it);
}
for (list<UndoTransaction*>::iterator it = in_order.begin(); it != in_order.end(); it++) {
node->add_child_nocopy((*it)->get_state());
}
}
return *node;