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Make commands noncopyable (they are definitely not copy safe).

Browse source 
memento_command.h style.


git-svn-id: svn://localhost/ardour2/branches/3.0@4648 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
David Robillard 2009-02-22 17:37:33 +00:00
parent df4e6f2341
commit 5b04ddf424
2 changed files with 27 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

3
libs/pbd/pbd/command.h
View file

@ -22,8 +22,9 @@
#define __lib_pbd_command_h__
#include <pbd/statefuldestructible.h>
#include <boost/utility.hpp>
class Command : public PBD::StatefulDestructible
class Command : public PBD::StatefulDestructible, public boost::noncopyable
{
public:
virtual ~Command() { /* NOTE: derived classes must call drop_references() */ }

52
libs/pbd/pbd/memento_command.h
View file

@ -39,63 +39,61 @@ template <class obj_T>
class MementoCommand : public Command
{
public:
MementoCommand(obj_T &object, XMLNode *before, XMLNode *after)
: obj(object), before(before), after(after)
MementoCommand(obj_T& a_object, XMLNode* a_before, XMLNode* a_after)
: obj(a_object), before(a_before), after(a_after)
{
/* catch destruction of the object */
new PBD::PairedShiva<obj_T,MementoCommand<obj_T> > (object, *this);
new PBD::PairedShiva< obj_T,MementoCommand<obj_T> > (obj, *this);
}
~MementoCommand ()
{
~MementoCommand () {
GoingAway(); /* EMIT SIGNAL */
if (before)
delete before;
if (after)
delete after;
delete before;
delete after;
}
void operator() ()
{
if (after)
void operator() () {
if (after) {
obj.set_state(*after);
}
}
void undo()
{
if (before)
void undo() {
if (before) {
obj.set_state(*before);
}
}
virtual XMLNode &get_state()
{
virtual XMLNode &get_state() {
string name;
if (before && after)
if (before && after) {
name = "MementoCommand";
else if (before)
} else if (before) {
name = "MementoUndoCommand";
else
} else {
name = "MementoRedoCommand";
}
XMLNode *node = new XMLNode(name);
XMLNode* node = new XMLNode(name);
node->add_property("obj_id", obj.id().to_s());
node->add_property("type_name", typeid(obj).name());
if (before)
if (before) {
node->add_child_copy(*before);
}
if (after)
if (after) {
node->add_child_copy(*after);
}
return *node;
}
protected:
obj_T &obj;
XMLNode *before, *after;
obj_T& obj;
XMLNode* before;
XMLNode* after;
};
#endif // __lib_pbd_memento_h__