handle Escape signal in all EditingContexts (including MidiCueEditor)

gtk2_ardour/editing_context.cc

@@ -38,6 +38,7 @@
 #include "editing_context.h"
 #include "editing_convert.h"
 #include "editor_drag.h"
+#include "gui_thread.h"
 #include "keyboard.h"
 #include "midi_region_view.h"
 #include "note_base.h"
@@ -154,6 +155,10 @@ EditingContext::EditingContext (std::string const & name)
 		_cursors->set_cursor_set (UIConfiguration::instance().get_icon_set());
 		std::cerr << "Set cursor set to " << UIConfiguration::instance().get_icon_set() << std::endl;
 	}
+
+	/* handle escape */
+
+	ARDOUR_UI::instance()->Escape.connect (escape_connection, MISSING_INVALIDATOR, boost::bind (&EditingContext::escape, this), gui_context());
 }
 
 EditingContext::~EditingContext()

gtk2_ardour/editing_context.h

@@ -624,6 +624,9 @@ public:
 	uint32_t autoscroll_cnt;
 	ArdourCanvas::Rect autoscroll_boundary;
 
+	PBD::ScopedConnection escape_connection;
+	virtual void escape () {}
+
   private:
 	static std::stack<EditingContext*> ec_stack;
 

gtk2_ardour/midi_cue_editor.cc

@@ -1418,3 +1418,13 @@ MidiCueEditor::midi_action (void (MidiView::*method)())
 
 	(view->*method) ();
 }
+
+void
+MidiCueEditor::escape ()
+{
+	if (!view) {
+		return;
+	}
+
+	view->clear_note_selection ();
+}

gtk2_ardour/midi_cue_editor.h

@@ -122,6 +122,8 @@ class MidiCueEditor : public CueEditor
 
 	void mouse_mode_toggled (Editing::MouseMode);
 
+	void escape ();
+
  private:
 	ArdourCanvas::GtkCanvasViewport* _canvas_viewport;
 	ArdourCanvas::GtkCanvas* _canvas;