[lcdproc] menus for clients

[Joris Robijn]

OK here's the promised thread. It's about the (long existing) idea of 
giving the clients their own menu. 

Something like: from the main menu you choose "clients", and then a 
list of clients that have registered a menu shows up. For example 
"memsizes". You select "memsizes". Then the menu defined by memsizes 
shows up, with things like column order, sort order etc.

We could make menu's by using the widget language like:
--> CREATEMENUITEM SCREEN=s1 TYPE=action NAME="play"
<-- OK
--> CREATEMENUITEM SCREEN=s1 TYPE=action NAME="stop"
<-- OK
--> CREATEMENUITEM SCREEN=s1 TYPE=action NAME="stop"
<-- ERROR CODE=exists TEXT="This item already exists"
--> CREATEMENUITEM SCREEN=s1 TYPE=action NAME="sort/name"
<-- OK
--> CREATEMENUITEM SCREEN=s1 TYPE=action NAME="sort/size"
<-- OK
--> CREATEMENUITEM SCREEN=s1 TYPE=action NAME="sort/time"
<-- OK
--> CREATEMENUITEM SCREEN=s1 TYPE=slider NAME="volume"
<-- OK

Notice the submenu being created for "sort".

When an item is selected the client receives messages like:
<-- EVENT TYPE=menuaction SCREEN=s1 NAME="play"
<-- EVENT TYPE=menuslider SCREEN=s1 NAME="volume" VALUE=34

Removal of items with
--> DELETEMENUITEM SCREEN=s1 TYPE=action NAME="sort/name"
<-- OK
--> DELETEMENUITEM SCREEN=s1 TYPE=action NAME="sort/size"
<-- OK
--> DELETEMENUITEM SCREEN=s1 TYPE=action NAME="sort/time"
<-- OK
And the submenu is removed as well.

or:
--> ERASEMENU SCREEN=s1
<-- OK
And all items are gone.

--> ERASEMENU SCREEN=s1 NAME="sort"
<-- OK
to erase the sort submenu only.

Joris


-- 
 Joris Robijn <joris@robijn.net>
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 // To understand recursion, we must first understand recursion


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