W3C home > Mailing lists > Public > www-style@w3.org > January 2015

Re: CSS Localization

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Wed, 28 Jan 2015 11:14:40 -0800
Message-ID: <CAAWBYDAnNtOcbfrGQHBv0YFGzKoQ152HGXKmT7_Uy_34AG83Nw@mail.gmail.com>
To: Cameron Jones <cmhjones@gmail.com>
Cc: www-style list <www-style@w3.org>
On Wed, Jan 28, 2015 at 6:00 AM, Cameron Jones <cmhjones@gmail.com> wrote:
> On Tue, Jan 20, 2015 at 11:49 PM, Tab Atkins Jr. <jackalmage@gmail.com> wrote:
>> On Sat, Jan 17, 2015 at 6:04 AM, Cameron Jones <cmhjones@gmail.com> wrote:
>>> On Fri, Jan 16, 2015 at 7:28 PM, Tab Atkins Jr. <jackalmage@gmail.com> wrote:
>>>> Reiterating my earlier point, if the *users* are giving some explicit
>>>> instruction, it's much more effective for them to give it to the
>>>> browser itself, so the browser can apply their wishes to *all* pages,
>>>> not just those who went to the trouble of setting everything up
>>>> correctly.  If the user's wishes can be accommodated in an automatic
>>>> way, the browser can do it better than the page; if the wishes can't
>>>> be accommodated automatically, then providing browser-level
>>>> functionality for it doesn't seem helpful.
>>> So every multilingual site which is currently using the 'national
>>> flag' UI pattern should instead try to inform uses how to change their
>>> locale in each of the browser preference panels?
>> They shouldn't try to do anything at all.  The browser-provided inputs
>> are formatted according to the computer's locale already, which is
>> *probably* correct; and if it's not, it's not the responsibility of
>> individual websites to correct for that.  (If it's incorrect, the user
>> is at least probably *used* to the incorrect display, and has learned
>> how to work with it.)
> The national flag pattern is precisely for when the browser's locale
> is incorrect with respect to what the user wants and they are
> incapable either by technical restriction, inadequacy or persistent
> inconvenience to change the configuration.

No.  You keep conflating multiple things here - browser-provided
inputs and the rest of the page's content - and it's making it very
difficult to maintain a consistent narrative, as there are different
responses to each of them.

As far as I can tell, there's no reason for a page to have control
over the locale of a browser-provided input.  Most of the time, user's
computers are in the right locale already, and when they're not, the
user is at least probably *used to* the locale they're stuck in, so
they can anticipate things like date ordering in OS/browser-provided
things.  Giving individual pages the ability to control these would
just mean that pages would be inconsistent with the user's locale
sometimes.  Even if there was a use-case, this sort of control is an
"attractive nuisance" that authors are likely to reach for commonly
because it *seems* right to them, so we'd have to be careful in how we
expose it to minimize the chance of it being over- (and incorrectly-)

On the other hand, the content on the rest of the page is already
fully under the page's control, and there's plenty of localization
tools in various server-side programming languages to handle that.
Most content can't be automatically localized (such as text), which is
why the "flag pattern" exists, because instead you just have to create
parallel pages (I've done this myself several times).  If you're doing
parallel pages for different locales, you can and should adapt the
dates/times/etc in-page yourself - a German-language page should be
using DD/MM/YY order for dates, while an American-language page should
be using MM/DD/YY.  There is no need for the browser to provide
additional help for this, as it's already fully possible and easy for
authors to do it themselves.

>> For all the content provided by the page, rather than the browser,
>> they already have the localization tools necessary to deliver things
>> in the format they want - the national flag UI pattern.  If you can
>> localize the text yourself, you can localize everything that's not
>> browser-provided yourself.
> But sites won't be able to localize the form inputs to use the same
> locale the user chose through the national flag UI pattern.
> If they do use the new form inputs they will have a mix of locales in
> effect on the same page.
> This is the worst case scenario for localizing a page and represents a
> step backwards for existing sites. These sites won't transition to
> using the new form inputs if they can not replicate their current
> functionality in the new controls.

No, this is a *preferred* scenario.  If I'm a German speaker and I go
to a site's German version, my computer is *probably* already set up
with a German locale, and the inputs will already reflect that
(assuming the input reflects my locale at all).  If I'm an American
who has to, for some reason, visit a German-language page (for
example, to buy train tickets), I want the inputs to be formatted in
the American style, like the rest of my computer.

If I'm a German who has a computer that is stuck in an American
locale, I've probably already gotten used to this, and will expect all
inputs to use the American format - confusing, but at least it's
consistent, so I can muscle-memory my way through.  And vice versa.

The worst-case scenario is if I can't predict what date format a
page's inputs will be using, and so I read a date wrong and get bad
information.  This is what would happen, though, if pages could
control the locale of their inputs.

>> You still haven't explained why someone would want to do any of this.
>> Very specifically:  what user, in what situation, would be helped by a
>> page setting this?  And, importantly, would they be hurt by pages
>> doing this for languages other than their own?
> A Chinese person working in LAX airport using shared access terminals
> running a webapp which provides a locale setting may want to configure
> their login to use their chosen localization without having to change
> browser settings on every login and inadvertently affecting other
> users of that terminal.

That's a very specific scenario, and I don't think it can generalize
very far either.  It can also be addressed by having multiple accounts
at the OS level, or multiple accounts at the browser level (Chrome,
for example, offers this now), either of which would address the
situation well.

> The argument about people being hurt by providing access to this
> functionality is advocating for a sterile environment where browsers
> must protect against nefarious or incompetent site developers. It's
> always possible for programmers to write abusive routines - anyone can
> include the following JS on any page today:
> while(true) {
>   // burn!!
> }
> With power comes responsibility - but the net impact of misusing or
> abusing a page's locale would be the incomprehension of that
> individual page, so the damage is limited to their own purposes.

We guard users against authors misusing features all the time.
Hyperbolic arguments aside, this is standard practice in standards

>>>> No, there's significant difference.  Inputs contain well-known data
>>>> types, and don't require any parsing or similar, just formatting.
>>>> Arbitrary data requires parsing and datatype tagging.
>>> You still need parsing when dealing with inputs - the user can do free
>>> text entry which needs to be parsed against the format.
>> That's against a single spec-defined grammar, though.  Dates, for
>> example, have to be in the form YYYY-MM-DD if you set the input
>> directly.  That's only barely "parsing". ^_^
> Hmm...i was more thinking that the format skeleton would provide the
> ability to enter values within that format.
> Wouldn't it be more confusing for users if the format changes when
> they focus the input field?

I'm unsure what you're talking about. I was referring to today's
world.  Today, if you give an <input type=date> a value directly, it
must be of the form YYYY-MM-DD.  (This is only relevant if you're
setting the value from script; Chrome, for example, does allow direct
date entry in the UI, but exposed it in the more familiar MM/DD/YYYY,
which is allowed on the UI side.)

> It should probably always be possible for ISO-8061 text entry, but for
> this to be the only format seems very technical and not so user
> friendly.

Again, this is the format required for setting the input.value directly.

>>> Surely you must agree that formatting is stylistic and will be specified in CSS?
>> I don't agree.  Formatting is meaningful (for example, some calendars
>> can't display some dates), and I haven't seen any reason for the
>> browser-supplied things to make this configurable so far.
> There are almost limitless ways of formatting dates, especially if we
> consider dates formatted with author supplied text strings.
> You seem to be advocating for a single date format for all purposes -
> there are many situations where anything from very short to very long
> formats are in widespread use and not just for visual layout.
> Whether a date contains the day of week, a numerical month or a verbal
> month, a 4 digit year or a 2 digit year - these are all common
> variations and not possible for a "one-size-fits-all".

That is not even remotely what I said.

Received on Wednesday, 28 January 2015 19:15:28 UTC

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