[compiz] switcher patch do disable window list

[Bellegarde Cedric]

Here is a switcher patch to disable window list:

It's very useful if you set opacity to 0. Then, window just bring to front one 
by one while switching. It's much more usable, i think, that small miniatures 
in a list where you don't see anything.

While making this patch, a question come into my head, nobody know on 
compiz.biz and some people are as curious as me.

Two code example:

/**********/
 case SWITCH_SCREEN_OPTION_MIPMAP: 
 case SWITCH_SCREEN_OPTION_ICON: 
 case SWITCH_SCREEN_OPTION_MINIMIZED: 
         if (compSetBoolOption (o, value)) 
             return TRUE; 
         break; 
/**********/


/**********/
case SWITCH_SCREEN_OPTION_BRINGTOFRONT: 
         if (compSetBoolOption (o, value)) 
         { 
             ss->bringToFront = o->value.b; 
             return TRUE; 
         } 
/**********/

At first look, i tell me: "How plugin know that MINIMIZED option had change if 
we do nothing more than returning TRUE. After looking the code, i saw this:

ss->opt[SWITCH_SCREEN_OPTION_MINIMIZED].value.b

So my question is:
When do i have to directly read CompOption?
When do i have to add a member to my plugin struct and update it in 
pluginSetScreenOption() ?

Cedric
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