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#include "evas_common.h"
#include "evas_private.h"
/* private calls */
/* FIXME: this is not optimal, but works. i should have a hash of keys per */
/* Evas and then a linked lists of grabs for that key and what */
/* modifiers/not_modifers they use */
static Evas_Key_Grab *evas_key_grab_new (Evas_Object *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers, Eina_Bool exclusive);
static Evas_Key_Grab *evas_key_grab_find (Evas_Object *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers, Eina_Bool exclusive);
static Evas_Key_Grab *
evas_key_grab_new(Evas_Object *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers, Eina_Bool exclusive)
{
/* MEM OK */
Evas_Key_Grab *g;
g = evas_mem_calloc(sizeof(Evas_Key_Grab));
if (!g) return NULL;
g->object = obj;
g->modifiers = modifiers;
g->not_modifiers = not_modifiers;
g->exclusive = exclusive;
g->keyname = strdup(keyname);
if (obj->layer->evas->walking_grabs)
g->just_added = EINA_TRUE;
if (!g->keyname)
{
if (!evas_mem_free(strlen(keyname) + 1))
{
free(g);
return NULL;
}
g->keyname = strdup(keyname);
if (!g->keyname)
{
free(g);
return NULL;
}
}
g->object->grabs = eina_list_append(g->object->grabs, g);
if (eina_error_get())
{
MERR_BAD();
evas_mem_free(sizeof(Eina_List));
g->object->grabs = eina_list_append(g->object->grabs, g);
if (eina_error_get())
{
MERR_FATAL();
free(g->keyname);
free(g);
return NULL;
}
}
obj->layer->evas->grabs = eina_list_append(obj->layer->evas->grabs, g);
if (eina_error_get())
{
MERR_BAD();
evas_mem_free(sizeof(Eina_List));
obj->layer->evas->grabs = eina_list_append(obj->layer->evas->grabs, g);
if (eina_error_get())
{
MERR_FATAL();
g->object->grabs = eina_list_remove(g->object->grabs, g);
free(g->keyname);
free(g);
return NULL;
}
}
return g;
}
static Evas_Key_Grab *
evas_key_grab_find(Evas_Object *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers, Eina_Bool exclusive)
{
/* MEM OK */
Eina_List *l;
Evas_Key_Grab *g;
EINA_LIST_FOREACH(obj->layer->evas->grabs, l, g)
{
if ((g->modifiers == modifiers) &&
(g->not_modifiers == not_modifiers) &&
(!strcmp(g->keyname, keyname)))
{
if ((exclusive) || (obj == g->object)) return g;
}
}
return NULL;
}
/* local calls */
void
evas_object_grabs_cleanup(Evas_Object *obj)
{
if (obj->layer->evas->walking_grabs)
{
Eina_List *l;
Evas_Key_Grab *g;
EINA_LIST_FOREACH(obj->grabs, l, g)
g->delete_me = EINA_TRUE;
}
else
{
while (obj->grabs)
{
Evas_Key_Grab *g = obj->grabs->data;
if (g->keyname) free(g->keyname);
free(g);
obj->layer->evas->grabs = eina_list_remove(obj->layer->evas->grabs,
g);
obj->grabs = eina_list_remove(obj->grabs, g);
}
}
}
void
evas_key_grab_free(Evas_Object *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers)
{
/* MEM OK */
Evas_Key_Grab *g;
g = evas_key_grab_find(obj, keyname, modifiers, not_modifiers, 0);
if (!g) return;
g->object->grabs = eina_list_remove(g->object->grabs, g);
obj->layer->evas->grabs = eina_list_remove(obj->layer->evas->grabs, g);
if (g->keyname) free(g->keyname);
free(g);
}
/* public calls */
EAPI Eina_Bool
evas_object_key_grab(Evas_Object *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers, Eina_Bool exclusive)
{
/* MEM OK */
Evas_Key_Grab *g;
MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
return EINA_FALSE;
MAGIC_CHECK_END();
if (!keyname) return EINA_FALSE;
if (exclusive)
{
g = evas_key_grab_find(obj, keyname, modifiers, not_modifiers,
exclusive);
if (g) return EINA_FALSE;
}
g = evas_key_grab_new(obj, keyname, modifiers, not_modifiers, exclusive);
if (!g) return EINA_FALSE;
return EINA_TRUE;
}
EAPI void
evas_object_key_ungrab(Evas_Object *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers)
{
/* MEM OK */
Evas_Key_Grab *g;
MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
return;
MAGIC_CHECK_END();
if (!keyname) return;
g = evas_key_grab_find(obj, keyname, modifiers, not_modifiers, 0);
if (!g) return;
if (g->object->layer->evas->walking_grabs)
{
if (!g->delete_me)
{
g->object->layer->evas->delete_grabs++;
g->delete_me = EINA_TRUE;
}
}
else
evas_key_grab_free(g->object, keyname, modifiers, not_modifiers);
}
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