int
screenlist_goto_prev(void)
{
Screen *s;
debug(RPT_DEBUG, "%s()", __FUNCTION__);
if (!current_screen)
return -1;
/* Find current screen in screenlist */
for (s = LL_GetFirst(screenlist); s && s != current_screen; s = LL_GetNext(screenlist));
/* One step back */
s = LL_GetPrev(screenlist);
if (!s) {
/* We're at the start of the screenlist. We should find the
* last screen with the same priority as the first screen.
*/
Screen *f = LL_GetFirst(screenlist);
Screen *n;
s = f;
while ((n = LL_GetNext(screenlist)) && n->priority == f->priority) {
s = n;
}
}
screenlist_switch(s);
return 0;
}
int input_reserve_key(const char *key, bool exclusive, Client *client)
{
KeyReservation *kr;
debug(RPT_DEBUG, "%s(key=\"%.40s\", exclusive=%d, client=[%d])", __FUNCTION__, key, exclusive, (client?client->sock:-1));
/* Find out if this key is already reserved in a way that interferes
* with the new reservation.
*/
for (kr = LL_GetFirst(keylist); kr; kr = LL_GetNext(keylist)) {
if (strcmp(kr->key, key) == 0) {
if (kr->exclusive || exclusive) {
/* Sorry ! */
return -1;
}
}
}
/* We can now safely add it ! */
kr = malloc(sizeof(KeyReservation));
kr->key = strdup(key);
kr->exclusive = exclusive;
kr->client = client;
LL_Push(keylist, kr);
report(RPT_INFO, "Key \"%.40s\" is now reserved in %s mode by client [%d]", key, (exclusive?"exclusive":"shared"), (client?client->sock:-1));
return 0;
}
/** Find a widget on a screen by its id.
* \param s Screen where to look for the widget.
* \param id Identifier of the widget.
* \return Pointerr to the widget; \c NULL if widget was not found or error.
*/
Widget *
screen_find_widget(Screen *s, char *id)
{
Widget *w;
if (!s)
return NULL;
if (!id)
return NULL;
debug(RPT_DEBUG, "%s(s=[%.40s], id=\"%.40s\")", __FUNCTION__, s->id, id);
for (w = LL_GetFirst(s->widgetlist); w != NULL; w = LL_GetNext(s->widgetlist)) {
if (0 == strcmp(w->id, id)) {
debug(RPT_DEBUG, "%s: Found %s", __FUNCTION__, id);
return w;
}
/* Search subscreens recursively */
if (w->type == WID_FRAME) {
w = widget_search_subs(w, id);
if (w != NULL)
return w;
}
}
debug(RPT_DEBUG, "%s: Not found", __FUNCTION__);
return NULL;
}
/** Destroy a screen.
* \param s Screen to destroy.
* \retval <0 Error; no screen given.
* \retval 0 Success.
*/
int
screen_destroy(Screen *s)
{
Widget *w;
debug(RPT_DEBUG, "%s(s=[%.40s])", __FUNCTION__, s->id);
menuscreen_remove_screen(s);
screenlist_remove(s);
for (w = LL_GetFirst(s->widgetlist); w; w = LL_GetNext(s->widgetlist)) {
/* Free a widget...*/
widget_destroy(w);
}
LL_Destroy(s->widgetlist);
s->widgetlist = NULL;
if (s->id != NULL) {
free(s->id);
s->id = NULL;
}
if (s->name != NULL) {
free(s->name);
s->name = NULL;
}
free(s);
s = NULL;
return 0;
}
int
screenlist_goto_next(void)
{
Screen *s;
debug(RPT_DEBUG, "%s()", __FUNCTION__);
if (!current_screen)
return -1;
/* Find current screen in screenlist */
for (s = LL_GetFirst(screenlist); s && s != current_screen; s = LL_GetNext(screenlist))
;
/* One step forward */
s = LL_GetNext(screenlist);
if (!s || s->priority < current_screen->priority) {
/* To far, go back to start of screenlist */
s = LL_GetFirst(screenlist);
}
screenlist_switch(s);
return 0;
}
KeyReservation *input_find_key(const char *key, Client *client)
{
KeyReservation *kr;
debug(RPT_DEBUG, "%s(key=\"%.40s\", client=[%d])", __FUNCTION__, key, (client?client->sock:-1));
for (kr = LL_GetFirst(keylist); kr; kr = LL_GetNext(keylist)) {
if (strcmp(kr->key, key) == 0) {
if (kr->exclusive || client==kr->client) {
return kr;
}
}
}
return NULL;
}
void input_release_key(const char *key, Client *client)
{
KeyReservation *kr;
debug(RPT_DEBUG, "%s(key=\"%.40s\", client=[%d])", __FUNCTION__, key, (client?client->sock:-1));
for (kr = LL_GetFirst(keylist); kr; kr = LL_GetNext(keylist)) {
if (kr->client == client
&& strcmp(kr->key, key) == 0) {
free(kr->key);
free(kr);
LL_DeleteNode(keylist);
report(RPT_INFO, "Key \"%.40s\" was reserved in %s mode by client [%d] and is now released", key, (kr->exclusive?"exclusive":"shared"), (client?client->sock:-1));
return;
}
}
}
void menuitem_destroy_ring(MenuItem *item)
{
debug(RPT_DEBUG, "%s(item=[%s])", __FUNCTION__,
((item != NULL) ? item->id : "(null)"));
if (item != NULL) {
char *s;
/* deallocate the strings */
for (s = LL_GetFirst(item->data.ring.strings);
s != NULL;
s = LL_GetNext(item->data.ring.strings)) {
free(s);
}
/* and the list */
LL_Destroy(item->data.ring.strings);
}
}
void input_release_client_keys(Client *client)
{
KeyReservation *kr;
debug(RPT_DEBUG, "%s(client=[%d])", __FUNCTION__, (client?client->sock:-1));
kr=LL_GetFirst(keylist);
while (kr) {
if (kr->client == client) {
report(RPT_INFO, "Key \"%.40s\" was reserved in %s mode by client [%d] and is now released", kr->key, (kr->exclusive?"exclusive":"shared"), (client?client->sock:-1));
free(kr->key);
free(kr);
LL_DeleteNode(keylist);
kr = LL_Get(keylist);
} else {
kr = LL_GetNext(keylist);
}
}
}
void *
LL_Look (LinkedList * list) // Peek at first node
{
return LL_GetFirst (list);
}
void
screenlist_process(void)
{
Screen *s;
Screen *f;
report(RPT_DEBUG, "%s()", __FUNCTION__);
if (!screenlist)
return;
/* Sort the list according to priority class */
LL_Sort(screenlist, compare_priority);
f = LL_GetFirst(screenlist);
/**** First we need to check out the current situation. ****/
/* Check whether there is an active screen */
s = screenlist_current();
if (!s) {
/* We have no active screen yet.
* Try to switch to the first screen in the list... */
s = f;
if (!s) {
/* There was no screen in the list */
return;
}
screenlist_switch(s);
return;
}
else {
/* There already was an active screen.
* Check to see if it has an expiry time. If so, decrease it
* and then check to see if it has expired. Remove the screen
* if expired. */
if (s->timeout != -1) {
--(s->timeout);
report(RPT_DEBUG, "Active screen [%.40s] has timeout->%d", s->id, s->timeout);
if (s->timeout <= 0) {
/* Expired, we can destroy it */
report(RPT_DEBUG, "Removing expired screen [%.40s]", s->id);
client_remove_screen(s->client, s);
screen_destroy(s);
}
}
}
/**** OK, current situation examined. We can now see if we need to switch. */
/* Is there a screen of a higher priority class than the
* current one ? */
if (f->priority > s->priority) {
/* Yes, switch to that screen, job done */
report(RPT_DEBUG, "%s: High priority screen [%.40s] selected", __FUNCTION__, f->id);
screenlist_switch(f);
return;
}
/* Current screen has been visible long enough and is it of 'normal'
* priority ?
*/
if (autorotate && (timer - current_screen_start_time >= s->duration)
&& s->priority > PRI_BACKGROUND && s->priority <= PRI_FOREGROUND) {
/* Ah, rotate! */
screenlist_goto_next();
}
}