-- {{{ License
-- Awesome dropdown Quake like console
-- 2012, Emmanuel Bouthenot <kolter@openics.org>
--
-- (very) partially inspired from http://awesome.naquadah.org/wiki/Drop-down_terminal
--
-- This file is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY
--
-- }}}

-- {{{ Libraries
require('utils')
-- }}}

-- {{{ Variables
awq = {}
awq_tag = nil
awq_name = ''
awq_scr = nil
awq_idx = 0
awqterm_prog = 'xterm'
-- }}}

-- {{{ Keys
awqkeys = awful.util.table.join(
    awful.key({ "Control" }, "Prior", function(c) awq_client_show_next() end),
    awful.key({ "Control" }, "Next" , function(c) awq_client_show_prev()  end),
    awful.key({ "Mod1" }   , "Up"   , function(c) awq_client_new()  end)
)
-- }}}

-- {{{ Functions (“private”)
function awq_client_show_pos(reverse)
    local keys = awful.util.table.keys(awq)
    if reverse then
        keys = awful.util.table.reverse(keys)
    end
    local pos = table.pos(keys, awq_name)
    if not (pos == nil) then
        local pos = pos+1
        local newname = table.keypos(keys, pos)
        if newname == nil then
            newname = table.keyfirst(keys)
        end
        if not (awq_name == newname) then
            awq_client_hide(awq_name)
            awq_name = newname
            awq_client_show(awq_name)
        end
    end
end

function awq_client_show_next()
    awq_client_show_pos(true)
end

function awq_client_show_prev()
    awq_client_show_pos(false)
end

function awq_client_new()
    awq_idx = awq_idx+1
    awq_name = 'awq_' .. awq_idx
    local name = awq_name
    if not awq[name] then
        -- Create table
        awq[name] = {}
        -- Add unmanage hook for awq programs
        client.add_signal("unmanage", function (c, startup)
            awq_client_show_prev()
            for name,data in pairs(awq) do
                for s, cl in pairs(data) do
                    if cl == c then
                        awq[name] = nil
                    end
                end
            end
        end)
    end
    -- Get workarea
    local workarea = screen[awq_scr].workarea
    spawnw = function (c)
        -- Store client
        awq[name][awq_scr] = c
        -- Float client
        awful.client.floating.set(c, true)
        -- Resize client
        c:geometry({
            x = workarea.x,
            y = workarea.y-19,
            width = workarea.width,
            height = workarea.height+20
        })
        -- Set keys
        c:keys(awful.util.table.join(
            c:keys(),
            awqkeys
        ))
        -- Focus and raise client
        c:raise()
        client.focus = c
        -- Remove hook
        client.remove_signal("manage", spawnw)
    end
    -- Add hook
    client.add_signal("manage", spawnw)
    -- Spawn program
    awful.util.spawn(awqterm_prog)
    awq_tag = awful.tag.selected(awq_scr)
end

function awq_client_show(name)
    -- Get client
    local c = awq[name][awq_scr]
    awful.client.movetotag(awful.tag.selected(awq_scr), c)
    c.hidden = false
    c:raise()
    client.focus = c
end

function awq_client_hide(name)
    -- Get client
    local c = awq[name][awq_scr]
    if awful.tag.selected(awq_scr) == awq_tag then
        c.hidden = true
        local ctags = c:tags()
        for i, t in pairs(ctags) do
            ctags[i] = nil
        end
        c:tags(ctags)
    else
        awful.client.movetotag(awful.tag.selected(awq_scr), c)
        c:raise()
        client.focus = c
    end
end

function awq_client_toggle()
    -- Get client
    if awq[awq_name] then
        c = awq[awq_name][awq_scr]
    end
    if c == nil then
        awq_client_new()
    else
        if c.hidden then
            awq_client_show(awq_name)
        else
            awq_client_hide(awq_name)
        end
        awq_tag = awful.tag.selected(awq_scr)
    end
end
-- }}}

-- {{{ Functions (“public”)
function awqterm_toggle()
    awq_scr = mouse.screen
    if next(awq) == nil then
        awq_client_new()
    else
        awq_client_toggle()
    end
end
-- }}}

-- vim: foldmethod=marker