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Re: HTML5 Filesystem API feedback

From: Robert Ginda <rginda@chromium.org>
Date: Mon, 18 Apr 2011 17:50:11 -0700
Message-ID: <BANLkTi=hmms1D1RA1O-ovLSKab23rhWztg@mail.gmail.com>
To: Eric Uhrhane <ericu@google.com>
Cc: arun@mozilla.com, Aryeh Gregor <Simetrical+w3c@gmail.com>, public-webapps@w3c.org
On Mon, Apr 18, 2011 at 5:28 PM, Eric Uhrhane <ericu@google.com> wrote:
> On Fri, Apr 15, 2011 at 4:01 PM, Arun Ranganathan <arun@mozilla.com> wrote:
>> On 4/15/11 6:29 PM, Aryeh Gregor wrote:
>>> On Wed, Apr 13, 2011 at 4:35 PM, Robert Ginda<rginda@chromium.org>  wrote:
>>>> * The FileError object is a bit awkward to work with.  I found that I
>>>> frequently had every reason to expect my calls to succeed (because
>>>> they were a follow-on to something that already succeeded), but I
>>>> wanted to log the failure reason in the event they didn't.  The code
>>>> online suggests a switch/case statement to turn error codes into
>>>> mnemonic strings.  This requires a hardcoded list of all known errors,
>>>> and a call out to this utility function every time you want to display
>>>> the error reason in a readable way.  I suggest adding the mnemonic
>>>> string as a property of FileError, and displaying it as part of the
>>>> toString.  (See util.getFileErrorMnemonic() and
>>>> util.installFileErrorToString() for example implementations.)
>>> I'd suggest solving this the same way as DOMException does, for
>>> consistency:
>>> http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#exception-domexception
>>> It has a "name" property that contains the name, e.g.,
>>> "INDEX_SIZE_ERR" or "INVALID_STATE_ERR".  Of course, if you want to
>>> display a real error message you have to localize it, but an
>>> easily-recognizable, memorable, Google-able string is still extremely
>>> useful in many cases.  Plus, DOMException already does it and it's
>>> about two lines to spec, so why not?
>> This sounds like a reasonable addition to both FileException and FileError;
>> I'll make this change in File API.
> That sounds great.

Yes, sounds good to me too.  Thanks Arun.

Received on Tuesday, 19 April 2011 00:50:55 UTC

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