kconfig/menuconfig: lxdialog is now built-in

lxdialog was previously called as an external program causing screen
to flicker when used. With this patch lxdialog is now built-in.
It is loosly based om previous work by:  Petr Baudis <pasky@ucw.cz>

Following is a list of changes:
o Moved build of dialog routings to kconfig Makefile
o menubox + checklist uses a new item list to hold all menu items
o in util.c implmented helper function to deal with item list
o menubox now uses parameters to save scroll state (avoids temp file)
o textbox now get text to be displayed as parameter and not a file
o make sure to properly delete subwin's before main windows
o killed unused files: lxdialog.c msgbox.c
o modified return value for ESC to match direct calling
o in a few places the code has been adjusted to 80 char wide
o in textbox a small refactoring was made to make code remotely readable
o in mconf removed all unused stuff (functions/variables)

Following is a list of know short comings:
a) pressing ESC twice will be interpreted as two ESC presses
b) resize does not work. menuconfig needs to be restarted to be adjusted

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 47 insertions, 5 deletions

diff --git a/scripts/kconfig/lxdialog/dialog.h b/scripts/kconfig/lxdialog/dialog.h
index 2f4c19d710b2..065ded0a449f 100644
--- a/scripts/kconfig/lxdialog/dialog.h
+++ b/scripts/kconfig/lxdialog/dialog.h
@@ -133,11 +133,55 @@ struct dialog_info {
  * Global variables
  */
 extern struct dialog_info dlg;
+extern char dialog_input_result[];
 
 /*
  * Function prototypes
  */
-void init_dialog(void);
+
+/* item list as used by checklist and menubox */
+void item_reset(void);
+void item_make(const char *fmt, ...);
+void item_add_str(const char *fmt, ...);
+void item_set_tag(char tag);
+void item_set_data(void *p);
+void item_set_selected(int val);
+int item_activate_selected(void);
+void *item_data(void);
+char item_tag(void);
+
+/* item list manipulation for lxdialog use */
+#define MAXITEMSTR 200
+struct dialog_item {
+        char str[MAXITEMSTR];   /* promtp displayed */
+        char tag;
+        void *data;     /* pointer to menu item - used by menubox+checklist */
+        int selected;   /* Set to 1 by dialog_*() function if selected. */
+};
+
+/* list of lialog_items */
+struct dialog_list {
+        struct dialog_item node;
+        struct dialog_list *next;
+};
+
+extern struct dialog_list *item_cur;
+extern struct dialog_list item_nil;
+extern struct dialog_list *item_head;
+
+int item_count(void);
+void item_set(int n);
+int item_n(void);
+const char *item_str(void);
+int item_is_selected(void);
+int item_is_tag(char tag);
+#define item_foreach() \
+        for (item_cur = item_head ? item_head: item_cur; \
+             item_cur && (item_cur != &item_nil); item_cur = item_cur->next)
+
+
+void init_dialog(const char *backtitle);
+void reset_dialog(void);
 void end_dialog(void);
 void attr_clear(WINDOW * win, int height, int width, chtype attr);
 void dialog_clear(void);
@@ -154,11 +198,9 @@ int dialog_msgbox(const char *title, const char *prompt, int height,
                   int width, int pause);
 int dialog_textbox(const char *title, const char *file, int height, int width);
 int dialog_menu(const char *title, const char *prompt, int height, int width,
-                int menu_height, const char *choice, int item_no,
-                const char *const *items);
+                int menu_height, const void *selected, int *s_scroll);
 int dialog_checklist(const char *title, const char *prompt, int height,
-                     int width, int list_height, int item_no,
-                     const char *const *items);
+                     int width, int list_height);
 extern char dialog_input_result[];
 int dialog_inputbox(const char *title, const char *prompt, int height,
                     int width, const char *init);