libcommon|SaveSlots: Update save slot statuses following engine reset

Save slots are linked with corresponding menu widgets on the load/save
pages. Presently these menu widgets are updated by the save slot and
so we must update the save slot's status following an engine reset as
the game menus are now rebuilt at this time.

doomsday/plugins/common/include/saveslots.h

@@ -88,6 +88,13 @@ class SaveSlots
          */
         void bindSaveName(de::String newName);
 
+        /**
+         * Force a manual update of the save slot status and update any linked menu item.
+         * Calling this is usually unnecessary as the status is automatically updated when
+         * the associated saved session changes.
+         */
+        void updateStatus();
+
     private:
         friend class SaveSlots;
         void setSavedSession(de::game::SavedSession *newSession);
@@ -165,6 +172,13 @@ class SaveSlots
      */
     Slot *slotByUserInput(de::String const &str) const;
 
+    /**
+     * Force a manual update of all save slot statuses and update any linked menu items.
+     * Calling this is usually unnecessary as the status of a slot is automatically updated
+     * when the associated saved session changes.
+     */
+    void updateAll();
+
     /**
      * Register the console commands and variables of this module.
      *

doomsday/plugins/common/src/g_update.cpp

@@ -21,8 +21,9 @@
 #include "common.h"
 #include "g_update.h"
 
-#include <ctype.h>
+#include <cctype>
 #include "animdefs.h"
+#include "g_common.h"
 #include "hu_chat.h"
 #include "hu_log.h"
 #include "hu_menu.h"
@@ -33,6 +34,7 @@
 #include "p_sound.h"
 #include "p_start.h"
 #include "r_common.h"
+#include "saveslots.h"
 
 using namespace common;
 
@@ -119,6 +121,7 @@ void G_UpdateState(int step)
 #endif
 
         Hu_MenuInit();
+        G_SaveSlots().updateAll();
 
 #if __JHEXEN__
         SndInfoParser(AutoStr_FromText("Lumps:SNDINFO"));

doomsday/plugins/common/src/hu_menu.cpp

@@ -370,6 +370,7 @@ String Hu_MenuFindPageName(Page const *page)
             {
                 return i.key();
             }
+            i++;
         }
     }
     return "";

doomsday/plugins/common/src/saveslots.cpp

@@ -216,6 +216,11 @@ void SaveSlots::Slot::setSavedSession(SavedSession *newSession)
     }
 }
 
+void SaveSlots::Slot::updateStatus()
+{
+    d->updateStatus();
+}
+
 DENG2_PIMPL(SaveSlots)
 , DENG2_OBSERVES(GameSession::SavedIndex, AvailabilityUpdate)
 {
@@ -369,6 +374,14 @@ SaveSlots::Slot *SaveSlots::slotByUserInput(String const &str) const
     return d->slotById(id);
 }
 
+void SaveSlots::updateAll()
+{
+    DENG2_FOR_EACH(Instance::Slots, i, d->sslots)
+    {
+        i->second->updateStatus();
+    }
+}
+
 void SaveSlots::consoleRegister() // static
 {
     C_VAR_INT("game-save-last-slot",    &cvarLastSlot,  CVF_NO_MIN|CVF_NO_MAX|CVF_NO_ARCHIVE|CVF_READ_ONLY, 0, 0);