W3C home > Mailing lists > Public > www-dom@w3.org > October to December 2012

Re: Adding `detail` to Event

From: Olli Pettay <Olli.Pettay@helsinki.fi>
Date: Wed, 28 Nov 2012 14:18:09 +0200
Message-ID: <50B60101.3080703@helsinki.fi>
To: David Håsäther <hasather@gmail.com>
CC: www-dom@w3.org
On 11/28/2012 02:00 PM, David Håsäther wrote:
> On Wed, Nov 28, 2012 at 12:37 PM, Olli Pettay <Olli.Pettay@helsinki.fi> wrote:
>> On 11/28/2012 01:12 PM, David Håsäther wrote:
>>>
>>> On Wed, Nov 28, 2012 at 12:04 PM, Olli Pettay <Olli.Pettay@helsinki.fi>
>>> wrote:
>>>
>>>> On 11/28/2012 12:30 PM, David Håsäther wrote:
>>>>>
>>>>>
>>>>> The only reason for CustomEvent is to be able to pass a `detail`
>>>>> object. It seems unnecessary to have a separate constructor just to be
>>>>> able to pass an extra object, and I would suggest that Event could
>>>>> take `detail` too (thereby deprecating CustomEvent).
>>>>
>>>>
>>>> What is the use case for having .detail in Event?
>>>
>>>
>>> Same use case as for having it in CustomEvent, to provide custom data.
>>> Custom events could then use the Event constructor, instead of
>>> CustomEvent.
>>>
>>> --
>>> David Håsäther
>>>
>>
>> So just use CustomEvent.
>
> Right. The question is if it makes sense to use a separate constructor
> for custom event, when the only thing it adds is the possibility to
> add a custom object, and this object could just as easily be available
> on Event.
>
>> Or are you asking for .detail for all the events, so that
>> for example UIEvents and MouseEvents could have it too?
>
> That was not the use case I had in mind, no.
>
>> UIEvent has already .detail, but not the same type as
>> CustomEvent.detail, so we can't move .detail to Event, but perhaps
>> we could add some other property. .additionalData? A bit long.
>
> Yea, UIEvent has detail, so you could overwrite it then. This is not a
> problem as far as I can see.


It is a problem because the type of .detail in UIEvent is different than
the type in .detail in Custom event.



>
>> But again, what is the use case?
>
> Less typing for absolutely no reason.
>
> --
> David Håsäther
>
Received on Wednesday, 28 November 2012 12:18:03 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Wednesday, 28 November 2012 12:18:09 GMT