From: Karsten Wiese Added function sets "void (*conf_changed_callback)(void)". Call it, if .config's changed state changes. Use above in qconf.cc to set gui's save-widget's sensitvity. Signed-off-by: Karsten Wiese Cc: Sam Ravnborg Cc: Roman Zippel Signed-off-by: Andrew Morton --- scripts/kconfig/confdata.c | 12 +++++++++++- scripts/kconfig/lkc_proto.h | 1 + scripts/kconfig/qconf.cc | 13 ++++++++++++- scripts/kconfig/qconf.h | 3 +++ 4 files changed, 27 insertions(+), 2 deletions(-) diff -puN scripts/kconfig/confdata.c~kconfig-add-void-conf_set_changed_callbackvoid-fnvoid-use-it-in-qconfcc scripts/kconfig/confdata.c --- a/scripts/kconfig/confdata.c~kconfig-add-void-conf_set_changed_callbackvoid-fnvoid-use-it-in-qconfcc +++ a/scripts/kconfig/confdata.c @@ -767,18 +767,28 @@ int conf_write_autoconf(void) } static int sym_change_count; +static void (*conf_changed_callback)(void); void sym_set_change_count(int count) { + int _sym_change_count = sym_change_count; sym_change_count = count; + if (conf_changed_callback && + (bool)_sym_change_count != (bool)count) + conf_changed_callback(); } void sym_add_change_count(int count) { - sym_change_count += count; + sym_set_change_count(count + sym_change_count); } bool conf_get_changed(void) { return sym_change_count; } + +void conf_set_changed_callback(void (*fn)(void)) +{ + conf_changed_callback = fn; +} diff -puN scripts/kconfig/lkc_proto.h~kconfig-add-void-conf_set_changed_callbackvoid-fnvoid-use-it-in-qconfcc scripts/kconfig/lkc_proto.h --- a/scripts/kconfig/lkc_proto.h~kconfig-add-void-conf_set_changed_callbackvoid-fnvoid-use-it-in-qconfcc +++ a/scripts/kconfig/lkc_proto.h @@ -6,6 +6,7 @@ P(conf_read_simple,int,(const char *name P(conf_write,int,(const char *name)); P(conf_write_autoconf,int,(void)); P(conf_get_changed,bool,(void)); +P(conf_set_changed_callback, void,(void (*fn)(void))); /* menu.c */ P(rootmenu,struct menu,); diff -puN scripts/kconfig/qconf.cc~kconfig-add-void-conf_set_changed_callbackvoid-fnvoid-use-it-in-qconfcc scripts/kconfig/qconf.cc --- a/scripts/kconfig/qconf.cc~kconfig-add-void-conf_set_changed_callbackvoid-fnvoid-use-it-in-qconfcc +++ a/scripts/kconfig/qconf.cc @@ -38,6 +38,8 @@ static QApplication *configApp; static ConfigSettings *configSettings; +QAction *ConfigMainWindow::saveAction; + static inline QString qgettext(const char* str) { return QString::fromLocal8Bit(gettext(str)); @@ -1305,8 +1307,11 @@ ConfigMainWindow::ConfigMainWindow(void) connect(quitAction, SIGNAL(activated()), SLOT(close())); QAction *loadAction = new QAction("Load", QPixmap(xpm_load), "&Load", CTRL+Key_L, this); connect(loadAction, SIGNAL(activated()), SLOT(loadConfig())); - QAction *saveAction = new QAction("Save", QPixmap(xpm_save), "&Save", CTRL+Key_S, this); + saveAction = new QAction("Save", QPixmap(xpm_save), "&Save", CTRL+Key_S, this); connect(saveAction, SIGNAL(activated()), SLOT(saveConfig())); + conf_set_changed_callback(conf_changed); + // Set saveAction's initial state + conf_changed(); QAction *saveAsAction = new QAction("Save As...", "Save &As...", 0, this); connect(saveAsAction, SIGNAL(activated()), SLOT(saveConfigAs())); QAction *searchAction = new QAction("Search", "&Search", CTRL+Key_F, this); @@ -1657,6 +1662,12 @@ void ConfigMainWindow::saveSettings(void configSettings->writeSizes("/split2", split2->sizes()); } +void ConfigMainWindow::conf_changed(void) +{ + if (saveAction) + saveAction->setEnabled(conf_get_changed()); +} + void fixup_rootmenu(struct menu *menu) { struct menu *child; diff -puN scripts/kconfig/qconf.h~kconfig-add-void-conf_set_changed_callbackvoid-fnvoid-use-it-in-qconfcc scripts/kconfig/qconf.h --- a/scripts/kconfig/qconf.h~kconfig-add-void-conf_set_changed_callbackvoid-fnvoid-use-it-in-qconfcc +++ a/scripts/kconfig/qconf.h @@ -297,6 +297,9 @@ protected: class ConfigMainWindow : public QMainWindow { Q_OBJECT + + static QAction *saveAction; + static void conf_changed(void); public: ConfigMainWindow(void); public slots: _