make DisplayOptionsPanel own its alternative bar

CommandLine.c

@@ -32,7 +32,6 @@ in the source distribution for its full text.
 #include "Machine.h"
 #include "MainPanel.h"
 #include "MetersPanel.h"
-#include "DisplayOptionsPanel.h"
 #include "Panel.h"
 #include "Platform.h"
 #include "Process.h"
@@ -426,7 +425,6 @@ int CommandLine_run(int argc, char** argv) {
 
    ScreenManager_delete(scr);
    MetersPanel_cleanup();
-   DisplayOptionsPanel_cleanup();
 
    UsersTable_delete(ut);
 

DisplayOptionsPanel.c

@@ -27,18 +27,11 @@ static const char* const DisplayOptionsFunctions[] = {"      ", "      ", "
 static const char* const DisplayOptionsIncDecFunctions[] = {"Inc   ", "Dec   ", "                                                      ", "Done  ", NULL};
 static const char* const DisplayOptionsIncDecKeys[] = {"+ ", "- ", "  ", "F10", NULL};
 static const int DisplayOptionsIncDecEvents[] = {'+', '-', ERR, KEY_F(10)};
-static FunctionBar*  DisplayOptions_incDecBar = NULL;
-
-void DisplayOptionsPanel_cleanup(void) {
-   if (DisplayOptions_incDecBar) {
-      FunctionBar_delete(DisplayOptions_incDecBar);
-      DisplayOptions_incDecBar = NULL;
-   }
-}
 
 static void DisplayOptionsPanel_delete(Object* object) {
    Panel* super = (Panel*) object;
    DisplayOptionsPanel* this = (DisplayOptionsPanel*) object;
+   FunctionBar_delete(this->incDecBar);
    Panel_done(super);
    free(this);
 }
@@ -102,7 +95,7 @@ static HandlerResult DisplayOptionsPanel_eventHandler(Panel* super, int ch) {
          /* fallthrough */
       case EVENT_SET_SELECTED:
          if (OptionItem_kind(selected) == OPTION_ITEM_NUMBER) {
-            super->currentBar = DisplayOptions_incDecBar;
+            super->currentBar = this->incDecBar;
          } else {
             Panel_setDefaultBar(super);
          }
@@ -138,10 +131,7 @@ DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager*
    FunctionBar* fuBar = FunctionBar_new(DisplayOptionsFunctions, NULL, NULL);
    Panel_init(super, 1, 1, 1, 1, Class(OptionItem), true, fuBar);
 
-   if (!DisplayOptions_incDecBar) {
-      DisplayOptions_incDecBar = FunctionBar_new(DisplayOptionsIncDecFunctions, DisplayOptionsIncDecKeys, DisplayOptionsIncDecEvents);
-   }
-
+   this->incDecBar = FunctionBar_new(DisplayOptionsIncDecFunctions, DisplayOptionsIncDecKeys, DisplayOptionsIncDecEvents);
    this->settings = settings;
    this->scr = scr;
 

DisplayOptionsPanel.h

@@ -10,19 +10,19 @@ in the source distribution for its full text.
 #include "Panel.h"
 #include "ScreenManager.h"
 #include "Settings.h"
+#include "FunctionBar.h"
 
 
 typedef struct DisplayOptionsPanel_ {
    Panel super;
 
    Settings* settings;
    ScreenManager* scr;
+   FunctionBar* incDecBar;
 } DisplayOptionsPanel;
 
 extern const PanelClass DisplayOptionsPanel_class;
 
-void DisplayOptionsPanel_cleanup(void);
-
 DisplayOptionsPanel* DisplayOptionsPanel_new(Settings* settings, ScreenManager* scr);
 
 #endif