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more NULL-pointer checks in menuscreens.c

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This commit is contained in:
marschap
2005-03-13 16:10:24 +00:00
parent 846b6fb740
commit 75fef67dfe
1 changed files with 42 additions and 26 deletions
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server/menuscreens.c
+42 -26
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@@ -70,7 +70,8 @@ int menuscreens_init()
/* Create screen */
menuscreen = screen_create ("_menu_screen", NULL);
menuscreen->priority = PRI_HIDDEN;
if (menuscreen != NULL)
menuscreen->priority = PRI_HIDDEN;
active_menuitem = NULL;
screenlist_add (menuscreen);
@@ -120,10 +121,11 @@ void menuscreen_inform_item_destruction (MenuItem * item)
{
MenuItem * i;
debug (RPT_DEBUG, "%s( item=[%s] )", __FUNCTION__, item->id);
debug (RPT_DEBUG, "%s( item=[%s] )", __FUNCTION__,
((item != NULL) ? item->id : "(null)"));
/* Are we currently in (a subitem of) the given item ? */
for( i = active_menuitem; i; i = i->parent ) {
for( i = active_menuitem; i != NULL; i = i->parent ) {
if( i == item ) {
menuscreen_switch_item (item->parent);
}
@@ -132,9 +134,11 @@ void menuscreen_inform_item_destruction (MenuItem * item)
void menuscreen_inform_item_modified (MenuItem * item)
{
debug (RPT_DEBUG, "%s( item=[%s] )", __FUNCTION__, item->id);
debug (RPT_DEBUG, "%s( item=[%s] )", __FUNCTION__,
((item != NULL) ? item->id : "(null)"));
if( !active_menuitem ) return;
if ((active_menuitem == NULL) || (item == NULL))
return;
/* Are we currently in the item or the parent of the item ? */
if( active_menuitem == item || active_menuitem == item->parent ) {
@@ -144,7 +148,7 @@ void menuscreen_inform_item_modified (MenuItem * item)
bool is_menu_key (char * key)
{
if (menu_key && strcmp (key, menu_key) == 0)
if (menu_key && key && strcmp (key, menu_key) == 0)
return true;
else
return false;
@@ -159,7 +163,8 @@ void menuscreen_switch_item (MenuItem * new_menuitem)
{
MenuItem * old_menuitem = active_menuitem;
debug (RPT_DEBUG, "%s( item=[%s] )", __FUNCTION__, new_menuitem?new_menuitem->id:NULL);
debug (RPT_DEBUG, "%s( item=[%s] )", __FUNCTION__,
((new_menuitem != NULL) ? new_menuitem->id : "(null)"));
/* First we do the switch */
active_menuitem = new_menuitem;
@@ -219,7 +224,7 @@ void menuscreen_key_handler (char *key)
switch (res) {
case MENURESULT_ERROR:
report (RPT_ERR, "%s: Error from menu_handle_input", __FUNCTION__);
report (RPT_ERR, "%s: Error from menu_process_input", __FUNCTION__);
break;
case MENURESULT_NONE:
if (active_menuitem) {
@@ -231,7 +236,7 @@ void menuscreen_key_handler (char *key)
case MENURESULT_ENTER:
/* Enter the selected menuitem
* Note: this is not for checkboxes etc that don't have their
* own screen. The menu_handle_input function should do
* own screen. The menu_process_input function should do
* things like toggling checkboxes !
*/
debug (RPT_DEBUG, "%s: Entering subitem", __FUNCTION__);
@@ -276,8 +281,8 @@ void menuscreen_create_menu ()
menu_add_item (options_menu, checkbox);
for (driver = drivers_getfirst(); driver; driver = drivers_getnext()) {
int contrast_avail = 0;
int brightness_avail = 0;
int contrast_avail = (driver->get_contrast && driver->set_contrast) ? 1 : 0;
int brightness_avail = (driver->get_brightness && driver->set_brightness) ? 1 : 0;
contrast_avail = (driver->get_contrast && driver->set_contrast);
brightness_avail = (driver->get_brightness && driver->set_brightness);
@@ -286,14 +291,19 @@ void menuscreen_create_menu ()
driver_menu = menu_create (driver->name, NULL, driver->name, driver);
menu_add_item (options_menu, driver_menu);
if (contrast_avail) {
slider = menuitem_create_slider ("contrast", contrast_handler, "Contrast", "min", "max", 0, 1000, 100, 500);
int contrast = driver->get_contrast(driver);
slider = menuitem_create_slider ("contrast", contrast_handler, "Contrast", "min", "max", 0, 1000, 100, contrast);
menu_add_item (driver_menu, slider);
}
if (brightness_avail) {
slider = menuitem_create_slider ("onbrightness", brightness_handler, "On Brightness", "min", "max", 0, 1000, 100, 500);
int onbrightness = driver->get_brightness (driver, BACKLIGHT_ON);
int offbrightness = driver->get_brightness (driver, BACKLIGHT_OFF);
slider = menuitem_create_slider ("onbrightness", brightness_handler, "On Brightness", "min", "max", 0, 1000, 100, onbrightness);
menu_add_item (driver_menu, slider);
slider = menuitem_create_slider ("offbrightness", brightness_handler, "Off Brightness", "min", "max", 0, 1000, 100, 500);
slider = menuitem_create_slider ("offbrightness", brightness_handler, "Off Brightness", "min", "max", 0, 1000, 100, offbrightness);
menu_add_item (driver_menu, slider);
}
}
@@ -334,7 +344,8 @@ void menuscreen_create_menu ()
MenuEventFunc (heartbeat_handler)
{
debug (RPT_DEBUG, "%s( item=[%s], event=%d )", __FUNCTION__, item->id, event);
debug (RPT_DEBUG, "%s( item=[%s], event=%d )", __FUNCTION__,
((item != NULL) ? item->id : "(null)"), event);
if (event == MENUEVENT_UPDATE) {
/* Set heartbeat setting */
@@ -347,7 +358,8 @@ MenuEventFunc (heartbeat_handler)
MenuEventFunc (backlight_handler)
{
debug (RPT_DEBUG, "%s( item=[%s], event=%d )", __FUNCTION__, item->id, event);
debug (RPT_DEBUG, "%s( item=[%s], event=%d )", __FUNCTION__,
((item != NULL) ? item->id : "(null)"), event);
if (event == MENUEVENT_UPDATE)
{
@@ -361,7 +373,8 @@ MenuEventFunc (backlight_handler)
MenuEventFunc (contrast_handler)
{
debug (RPT_DEBUG, "%s( item=[%s], event=%d )", __FUNCTION__, item->id, event);
debug (RPT_DEBUG, "%s( item=[%s], event=%d )", __FUNCTION__,
((item != NULL) ? item->id : "(null)"), event);
/* This function can be called by one of several drivers that
* support contrast !
@@ -381,7 +394,8 @@ MenuEventFunc (contrast_handler)
MenuEventFunc (brightness_handler)
{
debug (RPT_DEBUG, "%s( item=[%s], event=%d )", __FUNCTION__, item->id, event);
debug (RPT_DEBUG, "%s( item=[%s], event=%d )", __FUNCTION__,
((item != NULL) ? item->id : "(null)"), event);
/* This function can be called by one of several drivers that
* support contrast !
@@ -407,13 +421,15 @@ menuscreen_add_screen (Screen * s)
Menu * m;
MenuItem * mi;
debug (RPT_DEBUG, "%s( s=[%s] )", __FUNCTION__, s->id);
debug (RPT_DEBUG, "%s( s=[%s] )", __FUNCTION__,
((s != NULL) ? s->id : "(null)"));
if (!screens_menu)
return; /* When screens have not been created ... */
/* screens have not been created or no screen given ... */
if ((screens_menu == NULL) || (s == NULL))
return;
/* Create a menu entry for the screen */
m = menu_create (s->id, NULL, s->name?s->name:s->id, s);
m = menu_create (s->id, NULL, ((s->name != NULL) ? s->name : s->id), s);
menu_add_item (screens_menu, m);
/* And add some items for it... */
@@ -439,12 +455,12 @@ menuscreen_remove_screen (Screen * s)
{
Menu * m;
debug (RPT_DEBUG, "%s( s=[%s] )", __FUNCTION__, s->id);
debug (RPT_DEBUG, "%s( s=[%s] )", __FUNCTION__,
(s != NULL) ? s->id : "(NULL)");
if (s == menuscreen) {
/* allow to remove the menuscreen itself */
if ((s == NULL) || (s == menuscreen))
return;
/* To allow to remove the menuscreen itself */
}
m = menu_find_item (screens_menu, s->id, false);
menu_remove_item (screens_menu, m);