diff options
Diffstat (limited to 'libs/pbd/undo.cc')
| -rw-r--r-- | libs/pbd/undo.cc | 52 |
1 files changed, 32 insertions, 20 deletions
diff --git a/libs/pbd/undo.cc b/libs/pbd/undo.cc index af408a24a4..277b83bfce 100644 --- a/libs/pbd/undo.cc +++ b/libs/pbd/undo.cc @@ -24,31 +24,13 @@ #include <pbd/undo.h> #include <pbd/xml++.h> +#include <pbd/shiva.h> #include <sigc++/bind.h> using namespace std; using namespace sigc; -/* grrr, strict C++ says that static member functions are not C functions, but we also want - to be able to pack this into a sigc::ptr_fun and not sigc::mem_fun, so we have to make - it a genuine function rather than a member. -*/ - -static void command_death (UndoTransaction* ut, Command* c) -{ - if (ut->clearing()) { - return; - } - - ut->remove_command (c); - - if (ut->empty()) { - delete ut; - } -} - - UndoTransaction::UndoTransaction () { _clearing = false; @@ -68,6 +50,20 @@ UndoTransaction::~UndoTransaction () clear (); } +void +command_death (UndoTransaction* ut, Command* c) +{ + if (ut->clearing()) { + return; + } + + ut->remove_command (c); + + if (ut->empty()) { + delete ut; + } +} + UndoTransaction& UndoTransaction::operator= (const UndoTransaction& rhs) { @@ -81,7 +77,8 @@ UndoTransaction::operator= (const UndoTransaction& rhs) void UndoTransaction::add_command (Command *const action) { - action->GoingAway.connect (bind (sigc::ptr_fun (command_death), this, const_cast<Command*>(action))); + /* catch death */ + new PBD::ProxyShiva<Command,UndoTransaction> (*action, *this, &command_death); actions.push_back (action); } @@ -160,6 +157,8 @@ UndoHistory::add (UndoTransaction* const ut) UndoList.push_back (ut); /* we are now owners of the transaction */ + + Changed (); /* EMIT SIGNAL */ } void @@ -171,6 +170,8 @@ UndoHistory::remove (UndoTransaction* const ut) UndoList.remove (ut); RedoList.remove (ut); + + Changed (); /* EMIT SIGNAL */ } void @@ -185,6 +186,8 @@ UndoHistory::undo (unsigned int n) ut->undo (); RedoList.push_back (ut); } + + Changed (); /* EMIT SIGNAL */ } void @@ -199,6 +202,8 @@ UndoHistory::redo (unsigned int n) ut->redo (); UndoList.push_back (ut); } + + Changed (); /* EMIT SIGNAL */ } void @@ -207,6 +212,9 @@ UndoHistory::clear_redo () _clearing = true; RedoList.clear (); _clearing = false; + + Changed (); /* EMIT SIGNAL */ + } void @@ -215,6 +223,8 @@ UndoHistory::clear_undo () _clearing = true; UndoList.clear (); _clearing = false; + + Changed (); /* EMIT SIGNAL */ } void @@ -222,6 +232,8 @@ UndoHistory::clear () { clear_undo (); clear_redo (); + + Changed (); /* EMIT SIGNAL */ } XMLNode & UndoHistory::get_state() |