Assign client properties in rc.lua (for a scratchdrop extension)

[Markus Fuchs]

Hello,

I tried to extend the scratchdrop module by Lucas de Vries such that
the given clients keep their "scratchdrop properties" after awesome is
restarted. You can find the code here:

https://gist.github.com/fixje/4a1ef48cbbfe5ba6e070

With scratchdrop you can assign keys which toggle the visibility of
certain programs that do not show up as managed clients in awesome.
The list of clients managed by the scratchdrop module is stored in a
variable which is re-initialized after awesome is restarted. To
circumvent this issue, I put the necessary values into custom X
properties and re-assign them:

awesome.register_xproperty("AWESOME_SCRATCHTOP_VERT", "string")
awesome.register_xproperty("AWESOME_SCRATCHTOP_HORIZ", "string")
awesome.register_xproperty("AWESOME_SCRATCHTOP_WIDTH", "string")
awesome.register_xproperty("AWESOME_SCRATCHTOP_HEIGHT", "string")
awesome.register_xproperty("AWESOME_SCRATCHTOP_STICKY", "boolean")
awesome.register_xproperty("AWESOME_SCRATCHTOP_SCREEN", "string")
awesome.register_xproperty("AWESOME_SCRATCHTOP_PROG", "string")

function scratchdrop.restore()
    for k, c in pairs(client.get()) do
        if c:get_xproperty("AWESOME_SCRATCHTOP_VERT") ~= "" then
            local vert   = c:get_xproperty("AWESOME_SCRATCHTOP_VERT")
            local horiz  = c:get_xproperty("AWESOME_SCRATCHTOP_HORIZ")
            local width  = c:get_xproperty("AWESOME_SCRATCHTOP_WIDTH")
            local height = c:get_xproperty("AWESOME_SCRATCHTOP_HEIGHT")
            local sticky = c:get_xproperty("AWESOME_SCRATCHTOP_STICKY")
            local screen = c:get_xproperty("AWESOME_SCRATCHTOP_SCREEN")
            local prog = c:get_xproperty("AWESOME_SCRATCHTOP_PROG")
            width = tonumber(width)
            height = tonumber(height)
            screen = tonumber(screen)
            set_client_properties(c, vert, horiz, width, height,
sticky, screen, prog)

            if not dropdown[prog] then
                dropdown[prog] = {}
            end
            dropdown[prog][screen] = c

            c.hidden = true
            local ctags = c:tags()
            for i, t in pairs(ctags) do
                ctags[i] = nil
            end
            c:tags(ctags)
        end
    end
end


The problem arises when I try to call scratchdrop.restore() from
rc.lua. I tried to place it at the end of the config, but client
attributed are not restored at all. On the other hand, I can just call
the function from the awesome lua prompt after a successful restart
and it works as I expect.
Is there something I missed out from the startup process?

Cheers,
Markus

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