W3C home > Mailing lists > Public > public-sysapps@w3.org > November 2012

RE: ContactsAPI Draft

From: EDUARDO FULLEA CARRERA <efc@tid.es>
Date: Wed, 07 Nov 2012 09:21:22 +0000
To: timeless <timeless@gmail.com>, "public-sysapps@w3.org" <public-sysapps@w3.org>
Message-id: <A52BC7FE998B7E43BB74213DE5CD369008B25993@EX10-MB2-MAD.hi.inet>
On 26 oct 2012 at 17:57:21, timeless wrote:
> Disclaimer: this isn't an endorsement. (Nor is it a complete review,
> it's a quick scan.)
>
> First, the biggest lesson that CoreMob can provide is that you should
> *ALWAYS* provide (this means publishing) a UC/Requirements document
> before working on any API. I think that the current discussion about
> whether record() in the Call API makes sense is a good example of how
> SysApps's failure to do so has led to confusion.
>
> It's very hard to review any API proposal without such a document. I
> can't understand why, e.g. a clear() method is needed.
>
>> Abstract
>> This specification defines a System Level API which offers a simple interface
> to manage user's contacts.
>
>> A typical use case of the Contacts API is the implementation of an address
> book.
>
>> From my perspective, an address book is an underlying data store.
> Reading this API, it looks like what's being proposed isn't an API for
> an Address Book, but for an Address Book *Manager*. Because what's
> being exposed is a way to talk *TO* an address book, not to *be* an
> address book.
>
> To be constructive, I'd suggest "the implementation of an application
> to manage a system's address book."
>
I agree. Thanks for the suggestion.

>> 6. ContactsManager Interface
>
> Given the first real interface is in fact a Manager, my previous note
> about the Abstract being poorly phrased.
>
>>             attribute EventHandler oncontactchanged;
>
> This links to:
>
>> 6.1 Attributes
>> oncontactchanged of type EventHandler
>
> There are no links from this to the related thing, which is really painful.
>
>> 6.3 Event handlers
>>
>> The following are the event handlers (and their corresponding event
> handler event types) that must be supported as attributes by the
> ContactsManager object:
>
>> event handler / event handler event type
>> oncontactchanged / contactchanged
>
> There are no links from either of these to *anything*, which is even
> more painful.
>
>> 14. ContactChangeEvent Interface
>
> Note that this is not spelled remotely like `contactchanged` in 6.3
>
I will sort it out.

>> The ContactChangeEvent interface represents events related to a change
>> in a contact. WebIDL[NoInterfaceObject] interface ContactChangeEvent :
>> Event {
>>     readonly attribute DOMString contactID;
>> };
>
> So, I'm worried about what happens when the system Contacts service
> performs a "Contacts sync" and pulls in a few hundred contacts.
>
> We had the equivalent problem with DOM Mutation Events, the end result
> was Mutation observers [2] which support better batching (among other
> things).
>
>> A. References A.1 Normative references [DOM4] Anne van Kesteren; Aryeh
>> Gregor; Ms2ger. DOM4. URL:
>> http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html/ [HTML5] Ian
>> Hickson; David Hyatt. HTML5. 29 March 2012. W3C Working Draft. (Work in
>> progress.) URL: http://www.w3.org/TR/html5 [RFC2119] S. Bradner. Key
>> words for use in RFCs to Indicate Requirement
> Levels. March 1997. Internet RFC 2119. URL:
> http://www.ietf.org/rfc/rfc2119.txt

>> [WEBIDL] Cameron McCormack. Web IDL. 27 September 2011. W3C
> Working Draft. (Work in progress.) URL: http://www.w3.org/TR/2011/WD-

> WebIDL-20110927/
>
> There are no references to vCard 4. When Mozilla (tantek [3]) last
> spent time discussing Contacts, it was adamant that vCard 4 be used
> and referenced. I'm absolutely shocked and disappointed that it's
> missing from any Mozilla related publication. Along with an
> explanation for each and every deviation from vCard 4.
>
Reference to vCard to be added

>> 14.1 Attributes
>> contactID of type DOMString, readonlyIndicates the identifier of the
> Contactobject [sic] that has changed.
>
> Your markup is bad.
>
Yes, I'll fix it.
>
> [1] http://sysapps.github.com/sysapps/proposals/Contacts/Contacts.html

> [2] http://www.w3.org/TR/domcore/#mutation-observers

> [3] https://wiki.mozilla.org/Tantek-Mozilla-projects#ContactsAPI

>

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Received on Wednesday, 7 November 2012 09:21:51 GMT

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