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eina_model: helper function to setup subclass during runtime. 

SVN revision: 67795
This commit is contained in:
Gustavo Sverzut Barbieri 2012-02-09 16:20:16 +00:00
parent 0b8df6a240
commit 013c986c40
2 changed files with 109 additions and 1 deletions
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54
legacy/eina/src/include/eina_model.h
View File

@ -979,6 +979,60 @@ EAPI Eina_Bool eina_model_type_check(const Eina_Model_Type *type) EINA_ARG_NONNU
EAPI const char *eina_model_type_name_get(const Eina_Model_Type *type) EINA_ARG_NONNULL(1) EINA_WARN_UNUSED_RESULT EINA_PURE;
EAPI const Eina_Model_Type *eina_model_type_parent_get(const Eina_Model_Type *type) EINA_ARG_NONNULL(1) EINA_WARN_UNUSED_RESULT EINA_PURE;
/**
* @brief Setup the type to be a subclass of another parent type.
* @param type type to be modified
* @param parent type to be used as parent
* @return #EINA_TRUE on success, #EINA_FALSE otherwise.
*
* Although @a type is modified, the following properties are not
* touched or they are actually used for validation:
*
* @li @c type->version must be #EINA_MODEL_TYPE_VERSION;
* @li @c type->private_size unmodified, should be set to type's size;
* @li @c type->name unmodified, should be set to type's name.
*
*
* All other fields are modified as follow:
*
* @li @c type->type_size initiated to parent->type_size
* @li @c type->interfaces = NULL;
* @li @c type->events = NULL;
* @li @c type->setup = NULL;
* @li @c type->flush = NULL;
* @li @c type->constructor = NULL;
* @li @c type->destructor = NULL;
* @li @c type->copy = NULL;
* @li @c type->deep_copy = NULL;
* @li @c type->compare = NULL;
* @li @c type->load = NULL;
* @li @c type->unload = NULL;
* @li @c type->property_get = NULL;
* @li @c type->property_set = NULL;
* @li @c type->property_del = NULL;
* @li @c type->properties_names_list_get = NULL;
* @li @c type->child_count = NULL;
* @li @c type->child_get = NULL;
* @li @c type->child_set = NULL;
* @li @c type->child_del = NULL;
* @li @c type->child_insert_at = NULL;
* @li @c type->child_find = NULL;
* @li @c type->child_search = NULL;
* @li @c type->child_sort = NULL;
* @li @c type->child_iterator_get = NULL;
* @li @c type->child_reversed_iterator_get = NULL;
* @li @c type->child_sorted_iterator_get = NULL;
* @li @c type->child_filtered_iterator_get = NULL;
* @li @c type->to_string = NULL;
*
* If you have custom methods, overload them afterwards
* eina_model_type_subclass_setup() returns with #EINA_TRUE.
*
* @since 1.2
*/
EAPI Eina_Bool eina_model_type_subclass_setup(Eina_Model_Type *type,
const Eina_Model_Type *parent) EINA_ARG_NONNULL(1, 2);
EAPI Eina_Bool eina_model_type_subclass_check(const Eina_Model_Type *type,
const Eina_Model_Type *self_or_parent) EINA_ARG_NONNULL(1, 2) EINA_WARN_UNUSED_RESULT EINA_PURE;

56
legacy/eina/src/lib/eina_model.c
View File

@ -4207,7 +4207,6 @@ eina_model_type_parent_get(const Eina_Model_Type *type)
return type->parent;
}
#define EINA_MODEL_TYPE_INSTANCE_CHECK(type, model) \
EINA_SAFETY_ON_NULL_RETURN(type); \
EINA_SAFETY_ON_FALSE_RETURN(_eina_model_type_check(type)); \
@ -4577,6 +4576,61 @@ eina_model_type_to_string(const Eina_Model_Type *type, const Eina_Model *model)
return to_string(model);
}
EAPI Eina_Bool
eina_model_type_subclass_setup(Eina_Model_Type *type, const Eina_Model_Type *parent)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(type, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(parent, EINA_FALSE);
EINA_SAFETY_ON_FALSE_RETURN_VAL(_eina_model_type_check(parent), EINA_FALSE);
EINA_SAFETY_ON_FALSE_RETURN_VAL(type->version == EINA_MODEL_TYPE_VERSION,
EINA_FALSE);
type->parent = parent;
type->type_size = parent->type_size;
type->interfaces = NULL;
type->events = NULL;
type->setup = NULL;
type->flush = NULL;
type->constructor = NULL;
type->destructor = NULL;
type->copy = NULL;
type->deep_copy = NULL;
type->compare = NULL;
type->load = NULL;
type->unload = NULL;
type->property_get = NULL;
type->property_set = NULL;
type->property_del = NULL;
type->properties_names_list_get = NULL;
type->child_count = NULL;
type->child_get = NULL;
type->child_set = NULL;
type->child_del = NULL;
type->child_insert_at = NULL;
type->child_find = NULL;
type->child_search = NULL;
type->child_sort = NULL;
type->child_iterator_get = NULL;
type->child_reversed_iterator_get = NULL;
type->child_sorted_iterator_get = NULL;
type->child_filtered_iterator_get = NULL;
type->to_string = NULL;
type->__extension_ptr0 = NULL;
type->__extension_ptr1 = NULL;
type->__extension_ptr2 = NULL;
type->__extension_ptr3 = NULL;
if (type->type_size > sizeof(Eina_Model_Type))
{
unsigned char *p = (unsigned char *)type;
p += sizeof(Eina_Model_Type);
memset(p, 0, type->type_size - sizeof(Eina_Model_Type));
}
return EINA_TRUE;
}
EAPI Eina_Bool
eina_model_type_subclass_check(const Eina_Model_Type *type, const Eina_Model_Type *self_or_parent)
{