Hi Ken On May 21, 6:27 pm, Ken Snyder <[EMAIL PROTECTED]> wrote: > Interesting idea. The thing is, you are thinking of a CSS class name as > being a collection of styles. But a CSS class name is just a string; a > CSS selector is a collection of styles. In order to find out what > styles cascade to a certain element is quite complex (think firebug or > Dean Edwards IE8.js). To do what you're saying, you would have to find > out what styles would cascade to the element if it had a certain CSS > class name /and/ the CSS rules overrode inline properties. > > A shortcut way, I suppose, would be to remove all the inline styles, > apply the CSS class name, look at the computed styles, then re-apply the > inline styles that don't conflict. Unfortunately that would probably > produce a flicker.
Script.aculo.us is already doing something similar by creating an new Element, adding a style, compute it, then destroy it Here is the source : http://github.com/madrobby/scriptaculous/tree/master/src/effects.js#L1042 Doing the same with adding a class should work I guess. > You can probably get your desired API by defining an object with a group > of styles: > > var beginStyle = { > color: '#ff0000', > border: '2px solid red', > fontSize: '16px'}; > > var endStyle = { > color: '#000000', > border: 'none', > fontSize: '12px' > > }; > > $(element).setStyle(beginStyle).morph(endStyle); That's a good use for sure, but defining it in CSS itself it's even more fun ;-) > > P.S. : As far as I know, such concept is already used by at least > > jQuery and MooTools. > > Perhaps you mean those libraries have that functionality in plugins, but > I'm skeptical that they use a CSS Rule parser in the core library. I > use jQuery and haven't seen such behavior. Do you have a source? What > are their approaches and APIs? Sure, jQuery FX use it in base.js for animateClass : http://dev.jquery.com/browser/trunk/fx/fx.js#L68 In them case they actually just catch the offset between the actual style and the new style defined by a class name. For MooTools reference check them doc : http://docs12b.mootools.net/Fx/Fx.Morph#Fx-Morph:set Them source site look down :-( -- Sebastien Grosjean - ZenCocoon --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Prototype: Core" group. To post to this group, send email to prototype-core@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/prototype-core?hl=en -~----------~----~----~----~------~----~------~--~---
