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r183@gandalf: fugalh | 2006-07-17 19:01:39 -0600

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Use XMLNode instead of templating memento types.


git-svn-id: svn://localhost/ardour2/branches/undo@683 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Hans Fugal 2006-07-18 17:46:20 +00:00
parent 0bd3b0b670
commit 72168803ee
1 changed files with 9 additions and 4 deletions
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13
libs/pbd3/pbd/memento_command.h
View file

@ -24,13 +24,17 @@
#include <pbd/command.h> #include <pbd/command.h>
#include <sigc++/slot.h> #include <sigc++/slot.h>
template <class obj_T, class mem_T> /** This command class is initialized with before and after mementos
* (from Stateful::get_state()), so undo becomes restoring the before
* memento, and redo is restoring the after memento.
*/
template <class obj_T>
class MementoCommand : public Command class MementoCommand : public Command
{ {
public: public:
MementoCommand(obj_T &obj, MementoCommand(obj_T &obj,
mem_T before, XMLNode &before,
mem_T after XMLNode &after
) )
: obj(obj), before(before), after(after) {} : obj(obj), before(before), after(after) {}
void operator() () { obj.set_memento(after); } void operator() () { obj.set_memento(after); }
@ -41,9 +45,10 @@ class MementoCommand : public Command
// key is "MementoCommand" or something // key is "MementoCommand" or something
// before and after mementos // before and after mementos
} }
// TODO does this need a copy constructor?
protected: protected:
obj_T &obj; obj_T &obj;
mem_T before, after; XMLNode &before, &after;
}; };
#endif // __lib_pbd_memento_h__ #endif // __lib_pbd_memento_h__