Re: CSS # selectors and UI IDs

[Tristan van Berkom <tristan upstairslabs com>]

Hi Chris,

Unfortunately no, the id in the gtkbuilder xml is only useful in apis such as gtk_builder_get_object(), one 
must actually set the "name" property of the widget before addressing it as #name in the css.

This is at least partly because css parsing does not strictly enforce a policy that every widget have a 
unique #name.

Cheers,
    -Tristan

> On Apr 8, 2016, at 9:11 PM, Chris Larsen <clarsenipod gmail com> wrote:
>
> Hello Everyone,
>
> Forgive the cross-posting. I originally asked this in the language-bindings mailing list, but I don't think 
> anyone actually uses that one.
>
> Working on the Ruby bindings for GTK, and a question came up regarding the relationship between CSS 
> selectors and UI elements. On the Gnome developer page for GtkCssProvider, it says:
>
> Selectors work very similar to the way they do in CSS, with widget class names taking the role of element 
> names, and widget names taking the role of IDs. When used in a selector, widget names must be prefixed with 
> a '#' character. The '*' character represents the so-called universal selector, which matches any widget. 
>
> I take that to mean that when the GtkBuilder object parses the UI file, the name property of the created 
> widget object should be identical to the ID in the UI file. Can someone please confirm if this is the case?
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