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#include "evas_common_private.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 *eo_obj, Evas_Object_Protected_Data *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 *eo_obj, Evas_Object_Protected_Data *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers);
static Evas_Key_Grab *
evas_key_grab_new(Evas_Object *eo_obj, Evas_Object_Protected_Data *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_Bool have_exclusion = EINA_FALSE;
EINA_LIST_FOREACH(obj->layer->evas->grabs, l, g)
{
if ((g->modifiers == modifiers) &&
(g->not_modifiers == not_modifiers) &&
(!strcmp(g->keyname, keyname)) &&
(g->exclusive))
{
have_exclusion = EINA_TRUE;
break;
}
}
if (have_exclusion && exclusive) return NULL;
g = evas_mem_calloc(sizeof(Evas_Key_Grab));
if (!g) return NULL;
g->object = eo_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;
g->is_active = 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;
}
}
if (exclusive)
{
Evas_Key_Grab *ge;
EINA_LIST_FOREACH(obj->layer->evas->grabs, l, ge)
{
if ((ge->modifiers == modifiers) &&
(ge->not_modifiers == not_modifiers) &&
(!strcmp(ge->keyname, keyname)))
{
ge->is_active = EINA_FALSE;
}
}
}
if (have_exclusion) g->is_active = EINA_FALSE;
obj->grabs = eina_list_append(obj->grabs, g);
obj->layer->evas->grabs = eina_list_append(obj->layer->evas->grabs, g);
return g;
}
static Evas_Key_Grab *
evas_key_grab_find(Evas_Object *eo_obj, Evas_Object_Protected_Data *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers)
{
/* 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 (eo_obj == g->object) return g;
}
}
return NULL;
}
/* local calls */
void
evas_object_grabs_cleanup(Evas_Object *eo_obj EINA_UNUSED, Evas_Object_Protected_Data *obj)
{
if ((!obj->layer) || (!obj->layer->evas)) return;
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;
obj->layer->evas->grabs =
eina_list_remove(obj->layer->evas->grabs, g);
obj->grabs = eina_list_remove(obj->grabs, g);
if (g->keyname) free(g->keyname);
free(g);
}
}
}
void
evas_key_grab_free(Evas_Object *eo_obj, Evas_Object_Protected_Data *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers)
{
/* MEM OK */
Evas_Key_Grab *g;
g = evas_key_grab_find(eo_obj, obj, keyname, modifiers, not_modifiers);
if (!g) return;
Evas_Object_Protected_Data *g_object = eo_data_scope_get(g->object, EFL_CANVAS_OBJECT_CLASS);
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 */
EOLIAN Eina_Bool
_efl_canvas_object_key_grab(Eo *eo_obj, Evas_Object_Protected_Data *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers, Eina_Bool exclusive)
{
/* MEM OK */
Evas_Key_Grab *g;
if (((modifiers == not_modifiers) && (modifiers != 0)) || (!keyname)) return EINA_FALSE;
g = evas_key_grab_new(eo_obj, obj, keyname, modifiers, not_modifiers, exclusive);
return ((!g) ? EINA_FALSE : EINA_TRUE);
}
EOLIAN void
_efl_canvas_object_key_ungrab(Eo *eo_obj, Evas_Object_Protected_Data *obj, const char *keyname, Evas_Modifier_Mask modifiers, Evas_Modifier_Mask not_modifiers)
{
/* MEM OK */
Evas_Key_Grab *g;
Eina_List *l;
if (!keyname) return;
g = evas_key_grab_find(eo_obj, obj, keyname, modifiers, not_modifiers);
if (!g) return;
Evas_Object_Protected_Data *g_object = eo_data_scope_get(g->object, EFL_CANVAS_OBJECT_CLASS);
if (g_object->layer->evas->walking_grabs)
{
if (!g->delete_me)
{
g_object->layer->evas->delete_grabs++;
g->delete_me = EINA_TRUE;
}
}
else
{
if (g->exclusive)
{
Evas_Key_Grab *ge;
EINA_LIST_FOREACH(obj->layer->evas->grabs, l, ge)
{
if ((ge->modifiers == modifiers) &&
(ge->not_modifiers == not_modifiers) &&
(!strcmp(ge->keyname, keyname)))
{
if (!ge->is_active) ge->is_active = EINA_TRUE;
}
}
}
evas_key_grab_free(g->object, g_object, keyname, modifiers, not_modifiers);
}
}
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