keep a buffer dirty flag and display infos about the current buffer in the interfaces (including the dirty flag)

 * was a bit tricky because the Scintilla SAVEPOINTS cannot be (fully) used
 * when a file is loaded or saved, a Scintilla SAVEPOINT is set
 * SAVEPOINTLEFT notifications are used to set a buffer dirty
 * SAVEPOINTREACHED notifications are useless since Scintilla does not consider the saves themselves to be undoable
 * GTK interface displays infos in window title bar
 * NCURSES interface has also been updated and cleaned up a bit. Infos are displayed in a new info line.
 * NCURSES: fixed popup display after terminal resizing

1 files changed, 38 insertions, 1 deletions

diff --git a/interface.h b/interface.h
index d40506a..f89307e 100644
--- a/interface.h
+++ b/interface.h
@@ -7,6 +7,12 @@
 
 #include <Scintilla.h>
 
+#include "undo.h"
+
+/* avoid include dependency conflict */
+class QRegister;
+class Buffer;
+
 /*
  * Base class for all user interfaces - used mereley as a class interface.
  * The actual instance of the interface has the platform-specific type
@@ -16,6 +22,22 @@
  * There's only one Interface* instance in the system.
  */
 class Interface {
+	template <class Type>
+	class UndoTokenInfoUpdate : public UndoToken {
+		Interface *iface;
+		Type *obj;
+
+	public:
+		UndoTokenInfoUpdate(Interface *_iface, Type *_obj)
+				   : iface(_iface), obj(_obj) {}
+
+		void
+		run(void)
+		{
+			iface->info_update(obj);
+		}
+	};
+
 public:
 	virtual GOptionGroup *
 	get_options(void)
@@ -44,6 +66,16 @@ public:
 	virtual sptr_t ssm(unsigned int iMessage,
 			   uptr_t wParam = 0, sptr_t lParam = 0) = 0;
 
+	virtual void info_update(QRegister *reg) = 0;
+	virtual void info_update(Buffer *buffer) = 0;
+
+	template <class Type>
+	inline void
+	undo_info_update(Type *obj)
+	{
+		undo.push(new UndoTokenInfoUpdate<Type>(this, obj));
+	}
+
 	/* NULL means to redraw the current cmdline if necessary */
 	virtual void cmdline_update(const gchar *cmdline = NULL) = 0;
 
@@ -60,9 +92,14 @@ public:
 	/* main entry point */
 	virtual void event_loop(void) = 0;
 
+	/*
+	 * Interfacing to the external SciTECO world
+	 * See main.cpp
+	 */
 protected:
-	/* see main.cpp */
 	void stdio_vmsg(MessageType type, const gchar *fmt, va_list ap);
+public:
+	void process_notify(SCNotification *notify);
 };
 
 #ifdef INTERFACE_GTK