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Re: 'scroll' and 'resize' events

From: William Edney <bedney@technicalpursuit.com>
Date: Wed, 17 Jun 2009 13:47:47 -0500
Cc: "WebApps WG" <public-webapps@w3.org>
Message-Id: <9481BF9B-6C0F-490E-8E06-8453EA389077@technicalpursuit.com>
To: Anne van Kesteren <annevk@opera.com>
Folks -

Not sure this is relevant, but I'm tracking/contributing to the  
following two bugs around 'resize' events:

One for Mozilla:

https://bugzilla.mozilla.org/show_bug.cgi?id=227495

and one for Webkit:

https://bugs.webkit.org/show_bug.cgi?id=17969

The reason I point these out is that, in both cases, implementors are  
asking for better definitions of how these events should work (i.e.  
when they should fire, etc. etc.) Absent any formal definition, the  
intent for both camps is to just 'write up' how IE handles onresize at  
the 'element' level and implement that (not sure if Opera supports  
onresize on elements, sorry...). The important point here is that,  
since 'resize' is an Element-level event, it should operate if CSS  
changes modify the size of the element, not just when the window  
resizes.

On a related issue, what that leads to (i.e. 'resize' events getting  
fired upon CSS rule application) in my mind is the definition by this  
group of one or more events that would get fired when an element's  
computed (not necessarily inline) CSS value for any particular  
property gets changed. In IE, you can observe changes of any property  
of an element (including style changes) via the 'onpropertychange'  
event and then use currentStyle (W3 equivalent: getComputedStyle()) to  
get the new value.

So something like a 'CSSValueChanged' event that can be attached to an  
Element node.

Note that this is not the same as observing 'DOMAttrModified' on an  
element's 'style' attribute, nor should it be, IMO.

Any thoughts?

Cheers,

- Bill

On Jun 17, 2009, at 4:06 AM, Anne van Kesteren wrote:

> On Wed, 17 Jun 2009 08:56:43 +0200, Ian Hickson <ian@hixie.ch> wrote:
>> As mentioned on IRC, it would be cool if the CSSOM spec could  
>> define when
>> to fire 'scroll' and 'resize' events.
>>
>> If there's a particular place I should log this so that whoever takes
>> over that spec doesn't lose this feedback, let me know.
>
> For people following this thread: This is now logged in the CSS WG  
> issue tracker by Ian as that is the group working on the CSSOM.
>
>
> -- 
> Anne van Kesteren
> http://annevankesteren.nl/
>
Received on Wednesday, 17 June 2009 18:48:35 GMT

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