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Re: [CSSOM] does CaretPosition need a "before/after" hint?

From: Robert O'Callahan <robert@ocallahan.org>
Date: Sat, 25 Jun 2011 22:24:06 +1200
Message-ID: <BANLkTikGSMHdc0duH8jPRs4eP1rmXH0WsQ@mail.gmail.com>
To: Ryosuke Niwa <rniwa@webkit.org>
Cc: Ojan Vafai <ojan@chromium.org>, Anne van Kesteren <annevk@opera.com>, Julie Parent <jparent@chromium.org>, Eric Seidel <eseidel@chromium.org>, "www-style@w3.org" <www-style@w3.org>
On Sat, Jun 25, 2011 at 3:25 AM, Ryosuke Niwa <rniwa@webkit.org> wrote:

> On Fri, Jun 24, 2011 at 6:00 AM, Robert O'Callahan <robert@ocallahan.org>wrote:
>
>> On Fri, Jun 24, 2011 at 7:46 AM, Ryosuke Niwa <rniwa@webkit.org> wrote:
>>
>>> Because they're two different things.  One is about whether a caret
>>> appears before or after a line break, and the other is about to which
>>> BiDi-level caret belongs.  Just because Gecko decides to reuse the same flag
>>> doesn't mean we need to expose that to the Web.
>>>
>>> Having a flag that changes the meaning depending on where the
>>> CaretPosition is seems like an unnecessary complexity.
>>>
>>
>> The way I see it, the meaning doesn't change. When the caret is between
>> two characters or elements in the DOM, you can think of it as being attached
>> either to the previous character/element or the following character/element,
>> and the flag tells you which case it is.
>>
>> So far, certain situations involving line-breaks and bidi are the only
>> situations that we know of where it makes a difference to observable
>> behavior.
>>
>
> On Mac, for example, the notion of caret being attached to before/after a
> character doesn't really exist because it uses a split caret.
>

Can you explain further?

Rob
-- 
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Received on Saturday, 25 June 2011 10:24:36 GMT

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