Re: [eclipse-incubator-e4-dev] CSS namespaces

["向雅" <fyaoxy@xxxxxxxxx>]

Nice to hear you, Steve:)

The thead about CSS, in my memory, SWT with CSS should not at levels
as HTML,SVG or others with CSS. I think SWT with CSS is my focus.

The legacy, itself is the problem:)  also not sure what Kevin means:)

Thank you!

Regards,
Qinxian

2008/8/11 Steve Northover <Steve_Northover@xxxxxxxxxx>:
>
>> SWT burden lots of legacy, which I not known about, and nice to hear
>> details.
>
> Not sure exactly what you are getting at here.
>
>
>
> "向雅" <fyaoxy@xxxxxxxxx>
> Sent by: eclipse-incubator-e4-dev-bounces@xxxxxxxxxxx
>
> 08/08/2008 05:30 PM
>
> Please respond to
> E4 developer list <eclipse-incubator-e4-dev@xxxxxxxxxxx>
> To
> "E4 developer list" <eclipse-incubator-e4-dev@xxxxxxxxxxx>
> cc
> Subject
> Re: [eclipse-incubator-e4-dev] CSS namespaces
>
>
>
>
> Yes, and maybe not only a parser.
>
> SWT burden lots of legacy, which I not known about, and nice to hear
> details.
>
> 2008/8/9 Kevin McGuire <Kevin_McGuire@xxxxxxxxxx>:
>>
>> Thanks for moving the comment to this thread.  I still don't understand
>> what
>> you are saying though :)
>>
>> Do you mean we should implement a CSS parser from scratch rather than use
>> batik or flute?
>>
>> Also not sure about your comment on SWT.  It has lots of legagy burden,
>> Steve will tell you!
>>
>> Regards,
>> Kevin
>>
>>
>>
>>
>>
>> "向雅" <fyaoxy@xxxxxxxxx>
>> Sent by: eclipse-incubator-e4-dev-bounces@xxxxxxxxxxx
>>
>> 08/08/2008 12:56 PM
>>
>> Please respond to
>> E4 developer list <eclipse-incubator-e4-dev@xxxxxxxxxxx>
>> To
>> "E4 developer list" <eclipse-incubator-e4-dev@xxxxxxxxxxx>
>> cc
>> Subject
>> Re: [eclipse-incubator-e4-dev] CSS namespaces
>>
>>
>>
>>
>> Since the current CSS shoes not fit our feet, why not consider a fully new
>> CSS?
>>
>> And SWT has not any legacy burden and weight.
>>
>>
>> 2008/8/9 Kevin McGuire <Kevin_McGuire@xxxxxxxxxx>:
>>>
>>>> Hi,
>>>>
>>>> Angelo brought up CSS namespaces, I think this is an important topic
>>>> that hasn't been discussed here yet.
>>>
>>> Sigh... yes.
>>>
>>>> The question is how to specify
>>>> custom widget types in CSS. With SWT, the widget names are unambiguous,
>>>> but custom widgets can involve name collisions.
>>>>
>>>> Using CSS namespaces would be an option, although I would then opt for
>>>> using a default namespace for SWT to avoid clutter. The CSS could look
>>>> like this:
>>>>
>>>>    @namespace "org.eclipse.swt.widgets";
>>>>    @namespace my "my.name.space";
>>>>
>>>>    Label {
>>>>      color;red;
>>>>    }
>>>>
>>>>    my|Label {
>>>>      color;red;
>>>>    }
>>>>
>>>> On the other hand, some frequently used SWT widgets live in
>>>> "org.eclipse.swt.custom" (CLabel, CCombo, CTabFolder, ...), so those
>>>> would have to be prefixed as well (which I somehow dislike):
>>>>
>>>>    swtcustom|CLabel {
>>>>      color: blue;
>>>>    }
>>>
>>> Agree, I dislike it too. It's annoying to clutter the typical case (SWT
>>> widgets, regardless of whether they are custom or not).
>>>
>>>> Moreover, CSS 3 is not yet widely adopted and the available parsers do
>>>> not support it out-of-the-box.
>>>
>>> Good point.
>>>
>>>> An alternative to CSS namespaces could be some kind of mapping between
>>>> widget classes and CSS element names.
>>>
>>> I think this is a reasonable approach. Extended widgets outside of SWT
>>> would
>>> need some form of qualified name, not so much to prevent clashing with
>>> SWT
>>> since presumably everyone avoids that, but to prevent clashing with each
>>> other.  The element names can be whatever we want them to be, since its
>>> our
>>> code that'll do the mapping from CSS to widget method calls.  So we could
>>> solve it without resorting to CSS name spaces, for example by requiring
>>> that
>>> extended widgets register their names with us in some qualified fashion
>>> (e.g. NebulaGallery).  Kinda hacky but would work.
>>>
>>> Kevin
>>>
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>>>
>>
>>
>>
>> --
>> 致敬
>> 向雅
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> 向雅
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致敬
向雅