Re: [E-devel] Question about Evas_Object. - How to create Evas_Object with specific data?

[Gustavo S. B. <bar...@pr...>]

On Tue, Jul 31, 2012 at 11:34 AM, Gustavo Lima Chaves
<gl...@pr...> wrote:
> * Gustavo Sverzut Barbieri <bar...@pr...> [2012-07-31 11:28:49 -0300]:
>
>> On Tue, Jul 31, 2012 at 9:44 AM, Eunmi Lee <my...@gm...> wrote:
>> > Vincent and Gustavo, thank you for reply.
>> >
>> > But I could not find the answer from emotion and elementary,
>> > because I want to make the Evas_Object which is inheritable and gets
>> > value from the constructor's parameter.
>> >
>> > Elementary gets the parent as a parameter in the constructor, but
>> > elementary widget is not inheritable, so they can do everything in the
>> > constructor.
>> > Let's imagine to make the elm_popup inheritable. where can we make the
>> > Widget_Data and how can we pass the parent to make the wd->notify?
>> >
>> > If I don't have to make my Evas_Object inheritable, I can do
>> > everything in the constructor like an Elementary and Emotion widget.
>> > If I don't have to pass the value which is used to initialize
>> > Evas_Object, it is easy to make it.
>> > However, I want to do both of them.
>> >
>> > I really want to find the way to get the both of inheritance and value
>> > of constructor.
>>
>> Gustavo Lima replied with pointers on how to do it.
>>
>> But I insist you're looking it from the wrong point of view. There is
>> no constructor parameter concepts for Evas_Object. period, accept
>> that. The proper way to do it is to have another method call AFTER the
>> constructor:
>>
>>    Evas_Object *o = evas_object_smart_add(e, my_smart);
>>    my_property_set(o, my_parameter);
>>
>> You can expose this in two forms:
>>    1. Wrapped inside your own constructor (not-EFL like):
>>        Evas_Object *my_obj_add(Evas *e, my_type my_parameter) {
>>            Evas_Object *o = evas_object_smart_add(e, my_smart);
>>            my_property_set(o, my_parameter);
>>            return o;
>>        }
>>
>>    2. Explicitly expose a constructor without parameter and a public
>> (EAPI) method.
>>
>> For other details look at glima's email.
>
> Barbieri, I bet what he wants is setting the object's smart data
> *inside its smart_add() function*.  That's the place to do it.

this part is already covered by your email :-)

-- 
Gustavo Sverzut Barbieri
http://profusion.mobi embedded systems
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