void owl_keyhandler_invalidkey(owl_keyhandler *kh)
{
char *kbbuff = owl_keybinding_stack_tostring(kh->kpstack, kh->kpstackpos+1);
owl_function_makemsg("'%s' is not a valid key in this context.", kbbuff);
g_free(kbbuff);
owl_keyhandler_reset(kh);
}
int owl_keyhandler_init(owl_keyhandler *kh)
{
if (0 != owl_dict_create(&kh->keymaps)) return(-1);
kh->active = NULL;
owl_keyhandler_reset(kh);
return(0);
}
/* sets the active keymap, which will also reset any key state.
* returns the new keymap, or NULL on failure. */
const owl_keymap *owl_keyhandler_activate(owl_keyhandler *kh, const char *mapname)
{
const owl_keymap *km;
if (kh->active && !strcmp(mapname, kh->active->name)) return(kh->active);
km = owl_dict_find_element(&kh->keymaps, mapname);
if (!km) return(NULL);
owl_keyhandler_reset(kh);
kh->active = km;
return(km);
}
/* processes a keypress. returns 0 if the keypress was handled,
* 1 if not handled, -1 on error, and -2 if j==ERR. */
int owl_keyhandler_process(owl_keyhandler *kh, owl_input j)
{
const owl_keymap *km;
const owl_keybinding *kb;
int i, match;
if (!kh->active) {
owl_function_makemsg("No active keymap!!!");
return(-1);
}
/* deal with ESC prefixing */
if (!kh->in_esc && j.ch == 27) {
kh->in_esc = 1;
return(0);
}
if (kh->in_esc) {
j.ch = OWL_META(j.ch);
kh->in_esc = 0;
}
kh->kpstack[++(kh->kpstackpos)] = j.ch;
if (kh->kpstackpos >= OWL_KEYMAP_MAXSTACK) {
owl_keyhandler_reset(kh);
owl_function_makemsg("Too many prefix keys pressed...");
return(-1);
}
/* deal with the always_fn for the map and parents */
for (km=kh->active; km; km=km->parent) {
if (km->prealways_fn) {
km->prealways_fn(j);
}
}
/* search for a match. goes through active keymap and then
* through parents... TODO: clean this up so we can pull
* keyhandler and keymap apart. */
for (km=kh->active; km; km=km->parent) {
for (i=owl_list_get_size(&km->bindings)-1; i>=0; i--) {
kb = owl_list_get_element(&km->bindings, i);
match = owl_keybinding_match(kb, kh);
if (match == 1) { /* subset match */
/* owl_function_debugmsg("processkey: found subset match in %s", km->name); */
return(0);
} else if (match == 2) { /* exact match */
/* owl_function_debugmsg("processkey: found exact match in %s", km->name); */
owl_keybinding_execute(kb, j.ch);
owl_keyhandler_reset(kh);
if (km->postalways_fn) {
km->postalways_fn(j);
}
return(0);
}
}
}
/* see if a default action exists for the active keymap */
if (kh->active->default_fn && kh->kpstackpos<1) {
/*owl_function_debugmsg("processkey: executing default_fn");*/
kh->active->default_fn(j);
owl_keyhandler_reset(kh);
if (kh->active->postalways_fn) {
kh->active->postalways_fn(j);
}
return(0);
}
owl_keyhandler_invalidkey(kh);
/* unable to handle */
return(1);
}
void owl_keyhandler_init(owl_keyhandler *kh)
{
owl_dict_create(&kh->keymaps);
kh->active = NULL;
owl_keyhandler_reset(kh);
}
