allow ControlProtocols to call for undo/redo in GUI; make MCP use this

git-svn-id: svn://localhost/ardour2/branches/3.0@11851 d708f5d6-7413-0410-9779-e7cbd77b26cf

4 files changed, 34 insertions, 4 deletions

diff --git a/libs/surfaces/control_protocol/control_protocol.cc b/libs/surfaces/control_protocol/control_protocol.cc
index 983208343a..bbe4cea350 100644
--- a/libs/surfaces/control_protocol/control_protocol.cc
+++ b/libs/surfaces/control_protocol/control_protocol.cc
@@ -35,6 +35,8 @@ Signal0<void>       ControlProtocol::ZoomToSession;
 Signal0<void>       ControlProtocol::ZoomOut;
 Signal0<void>       ControlProtocol::ZoomIn;
 Signal0<void>       ControlProtocol::Enter;
+Signal0<void>       ControlProtocol::Undo;
+Signal0<void>       ControlProtocol::Redo;
 Signal1<void,float> ControlProtocol::ScrollTimeline;
 Signal1<void,uint32_t> ControlProtocol::SelectByRID;
 
diff --git a/libs/surfaces/control_protocol/control_protocol/control_protocol.h b/libs/surfaces/control_protocol/control_protocol/control_protocol.h
index c05e7e291a..c6547b0974 100644
--- a/libs/surfaces/control_protocol/control_protocol/control_protocol.h
+++ b/libs/surfaces/control_protocol/control_protocol/control_protocol.h
@@ -60,6 +60,8 @@ class ControlProtocol : virtual public sigc::trackable, public PBD::Stateful, pu
 	static PBD::Signal0<void> ZoomIn;
 	static PBD::Signal0<void> ZoomOut;
 	static PBD::Signal0<void> Enter;
+	static PBD::Signal0<void> Undo;
+	static PBD::Signal0<void> Redo;
 	static PBD::Signal1<void,float> ScrollTimeline;
 	static PBD::Signal1<void,uint32_t> SelectByRID;
 
diff --git a/libs/surfaces/mackie/mackie_control_protocol.cc b/libs/surfaces/mackie/mackie_control_protocol.cc
index dedd3332a8..3410eeb29f 100644
--- a/libs/surfaces/mackie/mackie_control_protocol.cc
+++ b/libs/surfaces/mackie/mackie_control_protocol.cc
@@ -1720,6 +1720,32 @@ MackieControlProtocol::scrub_release (Mackie::Button &)
 		);
 }
 
+LedState
+MackieControlProtocol::undo_press (Button&)
+{
+	Undo(); /* EMIT SIGNAL */
+	return off;
+}
+
+LedState
+MackieControlProtocol::undo_release (Button&)
+{
+	return off;
+}
+
+LedState
+MackieControlProtocol::redo_press (Button&)
+{
+	Redo(); /* EMIT SIGNAL */
+	return off;
+}
+
+LedState
+MackieControlProtocol::redo_release (Button&)
+{
+	return off;
+}
+
 LedState 
 MackieControlProtocol::drop_press (Button &)
 {
diff --git a/libs/surfaces/mackie/mackie_control_protocol.h b/libs/surfaces/mackie/mackie_control_protocol.h
index 3825262ded..70e1dfd364 100644
--- a/libs/surfaces/mackie/mackie_control_protocol.h
+++ b/libs/surfaces/mackie/mackie_control_protocol.h
@@ -196,6 +196,10 @@ class MackieControlProtocol
 	Mackie::LedState zoom_release(Mackie::Button &);
 	Mackie::LedState scrub_press(Mackie::Button &);
 	Mackie::LedState scrub_release(Mackie::Button &);
+	Mackie::LedState undo_press (Mackie::Button &);
+	Mackie::LedState undo_release (Mackie::Button &);
+	Mackie::LedState redo_press (Mackie::Button &);
+	Mackie::LedState redo_release (Mackie::Button &);
 
 	/* unimplemented button handlers */
 
@@ -261,14 +265,10 @@ class MackieControlProtocol
 	Mackie::LedState on_release (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState rec_ready_press (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState rec_ready_release (Mackie::Button &) { return Mackie::off; }
-	Mackie::LedState undo_press (Mackie::Button &) { return Mackie::off; }
-	Mackie::LedState undo_release (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState snapshot_press (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState snapshot_release (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState touch_press (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState touch_release (Mackie::Button &) { return Mackie::off; }
-	Mackie::LedState redo_press (Mackie::Button &) { return Mackie::off; }
-	Mackie::LedState redo_release (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState enter_press (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState enter_release (Mackie::Button &) { return Mackie::off; }
 	Mackie::LedState cancel_press (Mackie::Button &) { return Mackie::off; }