make select sdcv translation automatically

[stardiviner]

I copied one function from others that translate a word which select by "xsel". 
But I need to press a binded key. I want it automatically. (It means sdcv will 
automatically
translate current word after I double click on word or select this text word.)

bellowing is that code.

    -- {{{ sdcv/stardict
awful.key({ modkey }, "d", function ()
    local f = io.popen("xsel -o")
    local new_word = f:read("*a")
    f:close()

    if frame ~= nil then
        naughty.destroy(frame)
        frame = nil
        if old_word == new_word then
            return
        end
    end
    old_word = new_word

    local fc = ""
    local f  = io.popen("sdcv -n --utf8-output -u '朗道英汉字典5.0' -u 'WordNet' 
"..new_word)

    for line in f:lines() do
        fc = fc .. line .. '\n'
    end
    f:close()
    frame = naughty.notify({ title = '<span color="blue" font="DejaVu Sans Mono 
bold 12">' ..new_word.. '</span>', text = '<span font="DejaVu Sans Mono bold 
9">' ..fc..'</span>', timeout = 30, position = "top_left", width = 700, fg = 
"black", bg = "white" })

        -- {{{ TTS
        -- using spawn_with_shell because of the pipe ;)
        awful.util.spawn_with_shell( "sleep 0.6 ; echo \""..new_word.."\" | 
pronounce.sh " )
        -- awful.util.spawn_with_shell( "ncmpcpp pause ; echo 
\""..new_word.."\" | espeak" )
        -- }}}
end),
awful.key({ modkey, "Shift" }, "d", function ()
    awful.prompt.run({prompt = "Dict: "}, mypromptbox[mouse.screen].widget, 
function(cinword)
        naughty.destroy(frame)
        if cinword == "" then
            return
        end

        local fc = ""
        local f  = io.popen("sdcv -n --utf8-output -u '朗道英汉字典5.0' -u 'WordNet' 
"..cinword)

        for line in f:lines() do
            fc = fc .. line .. '\n'
        end
        f:close()
        -- frame = naughty.notify({ text = fc, timeout = 30, width = 320 })
    frame = naughty.notify({ title = '<span color="red" font="DejaVu Sans Mono 
bold 12">' ..cinword.. '</span>', text = '<span font="DejaVu Sans Mono bold 
9">' ..fc..'</span>', timeout = 30, position = "top_left", width = 700, fg = 
"black", bg = "white" })

        -- {{{ TTS
        awful.util.spawn_with_shell( "sleep 0.6 ; echo \""..cinword.."\" | 
pronounce.sh " )
        -- }}}
    end, nil, awful.util.getdir("cache").."/dict")
end),
-- }}}

-- 
>> stardiviner <<  =>GPG: 5D9F64D8 Twitter: @numbchild
http://stardiviner.dyndns-blog.com/author.html

    -- {{{ sdcv/stardict
awful.key({ modkey }, "d", function ()
    local f = io.popen("xsel -o")
    local new_word = f:read("*a")
    f:close()

    if frame ~= nil then
        naughty.destroy(frame)
        frame = nil
        if old_word == new_word then
            return
        end
    end
    old_word = new_word

    local fc = ""
    local f  = io.popen("sdcv -n --utf8-output -u '朗道英汉字典5.0' -u 'WordNet' 
"..new_word)

    for line in f:lines() do
        fc = fc .. line .. '\n'
    end
    f:close()
    frame = naughty.notify({ title = '<span color="blue" font="DejaVu Sans Mono 
bold 12">' ..new_word.. '</span>', text = '<span font="DejaVu Sans Mono bold 
9">' ..fc..'</span>', timeout = 30, position = "top_left", width = 700, fg = 
"black", bg = "white" })

        -- {{{ TTS
        -- using spawn_with_shell because of the pipe ;)
        awful.util.spawn_with_shell( "sleep 0.6 ; echo \""..new_word.."\" | 
pronounce.sh " )
        -- awful.util.spawn_with_shell( "ncmpcpp pause ; echo 
\""..new_word.."\" | espeak" )
        -- }}}
end),
awful.key({ modkey, "Shift" }, "d", function ()
    awful.prompt.run({prompt = "Dict: "}, mypromptbox[mouse.screen].widget, 
function(cinword)
        naughty.destroy(frame)
        if cinword == "" then
            return
        end

        local fc = ""
        local f  = io.popen("sdcv -n --utf8-output -u '朗道英汉字典5.0' -u 'WordNet' 
"..cinword)

        for line in f:lines() do
            fc = fc .. line .. '\n'
        end
        f:close()
        -- frame = naughty.notify({ text = fc, timeout = 30, width = 320 })
    frame = naughty.notify({ title = '<span color="red" font="DejaVu Sans Mono 
bold 12">' ..cinword.. '</span>', text = '<span font="DejaVu Sans Mono bold 
9">' ..fc..'</span>', timeout = 30, position = "top_left", width = 700, fg = 
"black", bg = "white" })

        -- {{{ TTS
        awful.util.spawn_with_shell( "sleep 0.6 ; echo \""..cinword.."\" | 
pronounce.sh " )
        -- }}}
    end, nil, awful.util.getdir("cache").."/dict")
end),
-- }}}

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