-- {{{ Mine

    -- {{{ From https://www.reddit.com/r/awesomewm/comments/gd4qxl/get_index_of_client_in_tasklist/ with some modifications
    local function fixed_indexing_filter(c)
        if not c then
            return false
        end
        if not (c.skip_taskbar or c.hidden or c.type == "splash" or c.type == "dock" or c.type == "desktop") then
            return true
        end
        return false
    end

    local function focused_screen_current_tag_client_iterator()
        local focused_screen = awful.screen.focused()
        local selected_tag_filter = function (c) return c.first_tag == focused_screen.selected_tag end
        local first_client_taskbar_idx = 1
        return awful.client.iterate(selected_tag_filter, first_client_taskbar_idx, focused_screen)
    end

    -- Returns client index in the taskbar (first on the left will have index = 1)
    local function client_to_taskbar_idx(client)
        local client_taskbar_idx = 0
        for c in focused_screen_current_tag_client_iterator() do
            if fixed_indexing_filter(c) then
                client_taskbar_idx = client_taskbar_idx + 1
                if (c == client) then
                    return client_taskbar_idx
                end
            end
        end

        -- if no client is focused (e.g. all are minimized) behave as if 1st is focused
        return 1
    end

    -- Returns client which is at taskbar_idx position in the taskbar
    function taskbar_idx_to_client(taskbar_idx)
        local client_taskbar_idx = 0
        for c in focused_screen_current_tag_client_iterator() do
            if fixed_indexing_filter(c) then
                client_taskbar_idx = client_taskbar_idx + 1
                if (client_taskbar_idx == taskbar_idx) then
                    return c
                end
            end
        end

        return nil
    end
    -- 
    -- }}}
    
    -- Returns total number of clients in the currently selected tag
    local function selected_tag_number_of_clients()
        local number_of_clients = 0
        for c in focused_screen_current_tag_client_iterator() do
            if fixed_indexing_filter(c) then
                 number_of_clients = number_of_clients + 1
            end
        end
        return number_of_clients
    end

    -- Switches focus to the client of index in the taskbar = taskbar_idx:
    --    * client with 1st taskbar item will have index 1
    --    * client with 2nd taskbar item will have index 2
    --    * etc
    local function client_focus_by_taskbar_idx(taskbar_idx)
        -- User wants to focus a non-existing client, e.g. there are only 2 opened in
        -- focused screen selected tag clients and user wants to focus 3rd one, as there is
        -- no 3rd one just do nothing
        if taskbar_idx < 1 or taskbar_idx > selected_tag_number_of_clients() then
            return
        end
     

        -- unminimize clint to focus in case it is minizied (won't harm for not-minimized)
        local client_to_focus = taskbar_idx_to_client(taskbar_idx)
        client_to_focus:emit_signal( -- client_to_focus cannot be null because of the sanity check above
            "request::activate",
            "tasklist",
            {raise = true}
        )

        -- now focus to it
        local focused_client_taskbar_idx = client_to_taskbar_idx(client.focus) 
        local relative_idx = taskbar_idx - focused_client_taskbar_idx             
        awful.client.focus.byidx(relative_idx)
    end
    -- }}}

-- }}}

    -- {{{ Mine: added/changes navigation for clients

        -- {{{ changed (was according to stack, now according to taskbar position):
        --     moving between windows left/right (as in tasklist)
        awful.key({ modkey,           }, "j",
            function () awful.client.focus.byidx(-1) end,
            {description = "next window to the left by index", group = "client"}
        ),
        awful.key({ modkey,           }, "k",
            function () awful.client.focus.byidx(1) end,
            {description = "next window to the right by index", group = "client"}
        ), -- }}}

        -- {{{ added (browser-tab-like switching of clients):
        --     moving between windows with Mod4-Fn (as between tags with Mod4-n)
        awful.key({ modkey,           }, "F1",
            function () client_focus_by_taskbar_idx(1) end,
            {description = "focus client 1 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F2",
            function () client_focus_by_taskbar_idx(2) end,
            {description = "focus client 2 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F3",
            function () client_focus_by_taskbar_idx(3) end,
            {description = "focus client 3 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F4",
            function () client_focus_by_taskbar_idx(4) end,
            {description = "focus client 4 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F5",
            function () client_focus_by_taskbar_idx(5) end,
            {description = "focus client 5 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F6",
            function () client_focus_by_taskbar_idx(6) end,
            {description = "focus client 6 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F7",
            function () client_focus_by_taskbar_idx(7) end,
            {description = "focus client 7 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F8",
            function () client_focus_by_taskbar_idx(8) end,
            {description = "focus client 8 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F9",
            function () client_focus_by_taskbar_idx(9) end,
            {description = "focus client 9 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F10",
            function () client_focus_by_taskbar_idx(10) end,
            {description = "focus client 10 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F11",
            function () client_focus_by_taskbar_idx(11) end,
            {description = "focus client 11 in taskbar", group = "client"}
        ),
        awful.key({ modkey,           }, "F12",
            function () client_focus_by_taskbar_idx(12) end,
            {description = "focus client 12 in taskbar", group = "client"}
        ),
        -- }}}

    -- }}}