add history navigation

svn path=/trunk/netsurf/; revision=6451

framebuffer/fb_frontend_sdl.c

@@ -30,6 +30,7 @@
 #include "desktop/gui.h"
 #include "desktop/options.h"
 #include "utils/messages.h"
+#include "desktop/history_core.h"
 
 #include "framebuffer/fb_gui.h"
 #include "framebuffer/fb_plotters.h"
@@ -110,6 +111,16 @@ void fb_os_input(struct gui_window *g, bool active)
                     browser_window_destroy(g->bw);
                     break;
 
+            case SDLK_b:
+                    if (history_back_available(g->bw->history))
+                            history_back(g->bw, g->bw->history);
+                    break;
+
+            case SDLK_f:
+                    if (history_forward_available(g->bw->history))
+                            history_forward(g->bw, g->bw->history);
+                    break;
+
             default:
                     printf("The %s key was pressed!\n",
                            SDL_GetKeyName(event.key.keysym.sym));

framebuffer/fb_gui.c

@@ -128,7 +128,8 @@ static void fb_redraw(struct gui_window *g)
 	if (c->locked) return;
 
         content_redraw(c, 0, -g->scrolly, g->width, g->height,
-                       g->redraw_box.x0, g->redraw_box.y0, g->redraw_box.x1, g->redraw_box.y1,
+                       g->redraw_box.x0, g->redraw_box.y0, 
+                       g->redraw_box.x1, g->redraw_box.y1,
                        g->bw->scale, 0xFFFFFF);
 
         fb_os_redraw(&g->redraw_box);

framebuffer/history.c

@@ -20,6 +20,13 @@
 
 void global_history_add(const char *url)
 {
+	const struct url_data *data;
+
+	data = urldb_get_url_data(url);
+	if (!data)
+		return;
+
+
 }
 
 void global_history_add_recent(const char *url)