Question

所以我当前要做的是非常出色地实现rofi。

我想这样做而不是仅仅使用rofi的原因是因为我想学习如何“很棒”地“自动生成”小部件。稍后，当我实现网络小部件（单击该小部件，显示面板，显示行中可用的wifi热点等）之类的功能时，这将派上用场。因此，这对我来说就是要学习如何实现出色的工作。而且，我想要一个程序启动器。

而且，在有人提出建议之前，我已经知道有一个很棒的内置发射器，而且我还知道有this。这不是我想要的。我想让rofi和dmenu拥有相同的东西：当您按下键时，我想弹出建议。我希望能够点击建议等。我想要的是这样的：uhhhh

所以我遇到的问题是：如何自动生成行？我只想在一个地方指定我要多少行，其余的就做得很棒。

我浏览了Elv的github，发现radical，尽管他制作的是菜单系统，但我认为我可以使用他的一些代码来完成我想要的事情。但是我不能为上帝的爱弄清楚它是如何工作的。对他没有冒犯，但即使对于用户而言，它也并不是很好地记录文件，而且对于实际解释代码的工作原理也没有记录。

所以我的问题是：我怎样做这项工作？我将如何制作自动充当行的小部件？

TL; DR：

我想以超棒的方式编写像rofi这样的程序启动器
我希望只能在一个地方指定行数
因此，（（（（I think）））我需要以某种方式自动将小部件生成为行，我该怎么做？

编辑：

我想要的是能够自动创建启动器的行。我知道我可以自己对行进行硬编码，让每一行具有不同的ID，然后可以编写一个函数，该函数在每次按键时都会用最相关的匹配项来更新每个小部件。就像（完全未经测试）这样：


local wibox = require("wibox")
local awful = require("awful")

local num_rows = 10
local row_height = 40

-- set the height of the background in accordance to how many rows there are,
-- and how high each row should be
local prompt_height = row_height * num_rows
local prompt_width = 300

-- make a widget in the middle of the screen
local background = wibox({
    x = awful.screen.focused().geometry.width / 2 - prompt_width / 2,
    y = awful.screen.focused().geometry.height / 2 - prompt_height / 2,
    width = prompt_width,
    height = prompt_height,
    bg = "#111111",
    visible = false,
    ontop = false
})
local rofi_launcher = wibox.widget({
    widget = background,
    {
        -- get a flexible layout so the searchbox and the suggestion boxes get 
        -- scaled to take up all the space of the background
        layout = wibox.layout.flex.vertical,
        { -- the prompt you actually type in
            -- set id here so we can adjust its ratio later, so the magnifying
            -- glass will end up on the right, and the texbox will take up the left side
            id = "searchbox_and_mangifying_glass",
            layout = wibox.layout.ratio.horizontal,
            {
                -- set id so we can use it as a prompt later
                id = "searchbox",
                widget = wibox.widget.textbox,
            },
            {
                widget = wibox.widget.imagebox,
                icon = '~/path/to/magnifying_glass_icon.svg',

            },
        },
        { -- this is where I actually create the rows that will display suggestions
            { -- row number 1
                -- make a background for the textbox to sit in, so you can change 
                -- background color later for the selected widget, etc etc. 
                widget = wibox.widget.background,
                    {
                        -- give it an id so we can change what's displayed in the
                        -- textbox when we press keys in the prompt
                        id = "suggestion_1",
                        widget = wibox.widget.textbox,
                    },
            },
            { -- row number 2
                -- background, again
                widget = wibox.widget.background,
                    {
                        -- id and textbox again
                        id = "suggestion_2",
                        widget = wibox.widget.textbox,
                    },
            },
            -- and another 8 (according to the `num_rows` variable) of the same two 
            -- textboxes above. This is exactly my problem. How can I make these 
            -- textboxes automatically and still be able to interact with them to 
            -- display suggestions on the fly, as the user types keys into the prompt?

        },

    },
})

如果这还不够清楚，请告诉我您不了解的地方，我会更新我的问题。

Answer 1

同样未经测试的代码，但这会创建一个文本框表，而不是使用声明性布局来创建所有这些文本框：

[SNIP; For shorter code I removed some stuff at the beginning]

local textboxes = {}
local widgets = {}

for i = 1, num_rows do
    local tb = wibox.widget.textbox()
    local bg = wibox.widget.background(tb)
    bg:set_bg("#ff0000") -- The original code did not set a bg color, but that would make the bg widget useless...?

    tb.id = "suggestion_" .. tostring(i) -- This is likely unnecessary, but the original code set these IDs, too

    table.insert(textboxes, tb)
    table.insert(widgets, bg)
end

local rofi_launcher = wibox.widget({
    widget = background,
    {
        -- get a flexible layout so the searchbox and the suggestion boxes get 
        -- scaled to take up all the space of the background
        layout = wibox.layout.flex.vertical,
        { -- the prompt you actually type in
        [SNIP - I did not change anything here; I only removed this part to make the code shorter]
        },
        widgets
    },
})

-- Now make the textboxes display something
textboxes[3].text = "I am the third row"
textboxes[5].text = "I am not"

在awesome-wm中自动生成小部件

TL; DR：

编辑：

1 个答案: