User:Ackley Bing/List2DialogButtons

// List2DialogButtons() for llDialog use
// example: llDialog(id,"",List2DialogButtons(Gdummylist,Gindex),1);
// Uses "<<" & ">>" dialog buttons for navigation
// Thanks to NovaConvair and Wherorangi for help with math equations.
list Gdummylist=["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];
integer Gindex;
list List2DialogButtons(list chain, integer i)
{
    list buttons;
    integer j=llGetListLength(chain);
    if (j>12)
        buttons =
            ["<<",llList2String(chain,(i+9)%j),">>"]
            + wrap(chain,(i+6)%j,(i+8)%j)
            + wrap(chain,(i+3)%j,(i+5)%j)
            + wrap(chain,i,(i+2)%j);
    else
    {
        integer k;
        do buttons+=llList2List(chain,k,k);
        while(++k<j);
    }
    return buttons;
}
list wrap(list c, integer x, integer y)
{
    if(x<=y) return llList2List(c, x, y);
    return llList2List(c,x,-1)+llList2List(c,0,y);
}
default
{
    state_entry()
    {
        llListen(1,"",llGetOwner(),"");
    }
    touch_start(integer index)
    {
        Gindex=0;
        llDialog(llGetOwner()," ",List2DialogButtons(Gdummylist,Gindex),1);
    }
    listen(integer channel, string name, key id, string message)
    {
        if(message=="<<"|message==">>")
        {
            integer j=llGetListLength(Gdummylist);
            if (message=="<<") Gindex=(Gindex-10)%j;
            else if (message==">>") Gindex=(Gindex+10)%j;
            llDialog(llGetOwner()," ",List2DialogButtons(Gdummylist,Gindex),1);
        }
        else
        {
            integer find_index=llListFindList(Gdummylist,[message]);
            if(~find_index)
            {
                llOwnerSay(message);
                //actions...
            }
        }
    }
}