first working version of the one-view-per-buffer design

The user interface provides a Scintilla view abstraction and
every buffer is based on a view. All Q-Register strings use
a single dedicated view to save memory and initialization time
when using many string registers.

 * this means we can finally implement a working lexer configuration
   and it only has to be done once when the buffer is first added
   to the ring. It is unnecessary to magically restore the lexer
   styles upon rubout of EB (very hard to implement anyway). It
   is also not necessary to rerun the lexer configuration macro
   upon rubout which would be hard to reconcile with SciTECO's
   basic design since every side-effect should be attached to a
   character.
 * this means that opening buffers is slightly slower now
   because of the view initialization
 * on the other hand, macros with many string q-reg operations
   are faster now, since the document must no longer be changed
   on the buffer's view and restored later on.
 * also now we can make a difference between editing a document
   in a view and changing the current view, which reduces UI calls
 * the Document class has been retained as an abstraction about
   Scintilla documents, used by QRegister Strings.
   It had to be made virtual, so the view on which the document
   is created can be specified by a virtual function.
   There is no additional space overhead for Documents.

1 files changed, 44 insertions, 7 deletions

diff --git a/src/interface-ncurses.h b/src/interface-ncurses.h
index f1003de..647b1ef 100644
--- a/src/interface-ncurses.h
+++ b/src/interface-ncurses.h
@@ -31,19 +31,44 @@
 
 namespace SciTECO {
 
+typedef class ViewNCurses : public View {
+	Scintilla *sci;
+
+public:
+	ViewNCurses();
+	~ViewNCurses();
+
+	inline void
+	refresh(void)
+	{
+		scintilla_refresh(sci);
+	}
+
+	inline WINDOW *
+	get_window(void)
+	{
+		return scintilla_get_window(sci);
+	}
+
+	inline sptr_t
+	ssm(unsigned int iMessage, uptr_t wParam = 0, sptr_t lParam = 0)
+	{
+		return scintilla_send_message(sci, iMessage, wParam, lParam);
+	}
+} ViewCurrent;
+
 typedef class InterfaceNCurses : public Interface {
 	SCREEN *screen;
 	FILE *screen_tty;
 
-	Scintilla *sci;
-
 	WINDOW *info_window;
 	gchar *info_current;
-	WINDOW *sci_window;
 	WINDOW *msg_window;
 	WINDOW *cmdline_window;
 	gchar *cmdline_current;
 
+	ViewNCurses *current_view;
+
 	struct Popup {
 		WINDOW *window;
 		GSList *list;
@@ -57,13 +82,12 @@ typedef class InterfaceNCurses : public Interface {
 public:
 	InterfaceNCurses() : screen(NULL),
 			     screen_tty(NULL),
-			     sci(NULL),
 			     info_window(NULL),
 			     info_current(NULL),
-			     sci_window(NULL),
 			     msg_window(NULL),
 			     cmdline_window(NULL),
-			     cmdline_current(NULL) {}
+			     cmdline_current(NULL),
+	                     current_view(NULL) {}
 	~InterfaceNCurses();
 
 	void main(int &argc, char **&argv);
@@ -71,10 +95,23 @@ public:
 	void vmsg(MessageType type, const gchar *fmt, va_list ap);
 	void msg_clear(void);
 
+	void show_view(View *view);
+	inline View *
+	get_current_view(void)
+	{
+		return current_view;
+	}
+
 	inline sptr_t
 	ssm(unsigned int iMessage, uptr_t wParam = 0, sptr_t lParam = 0)
 	{
-		return scintilla_send_message(sci, iMessage, wParam, lParam);
+		return current_view->ssm(iMessage, wParam, lParam);
+	}
+	inline void
+	undo_ssm(unsigned int iMessage,
+		 uptr_t wParam = 0, sptr_t lParam = 0)
+	{
+		current_view->undo_ssm(iMessage, wParam, lParam);
 	}
 
 	void info_update(QRegister *reg);