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local Menu = {}
local default_config = {
window = {
margin = { 1, 0, 1, 0 },
padding = { 1, 1, 1, 1 },
title_pos = "center",
border = { "", "-", "", "", "", "", "", "" },
zindex = 1000,
},
icons = {
separator = "➜",
},
}
function Menu:new(config)
config = vim.tbl_deep_extend("force", default_config, config or {})
local opts = {}
opts.window = config.window
opts.icons = config.icons
setmetatable(opts, self)
self.__index = self
return opts
end
function Menu:_get_window_margins()
local margins = {}
for i, m in ipairs(self.window.margin) do
local _m = m
if m > 0 and m < 1 then
if i % 2 == 0 then
_m = math.floor(vim.o.columns * m)
else
_m = math.floor(vim.o.lines * m)
end
end
margins[i] = _m
end
return margins
end
local function add_vertical_padding(content, size)
for _ = 1, size do
table.insert(content, "")
end
end
function Menu:_process_items(items)
local pad_top, pad_right, pad_bot, pad_left = unpack(self.window.padding)
local content = {}
local keys = {}
add_vertical_padding(content, pad_top)
for _, item in ipairs(items) do
if item.key then
keys[item.key] = item
table.insert(content, string.rep(" ", pad_left) .. vim.fn.join({
item.key,
self.icons.separator,
item.label,
}) .. string.rep(" ", pad_right))
end
end
add_vertical_padding(content, pad_bot)
return keys, content
end
function Menu:_open_window(title, content)
local margins = self:_get_window_margins()
local wins = vim.tbl_filter(
function(w)
return vim.api.nvim_win_is_valid(w)
and vim.api.nvim_win_get_config(w).relative == ""
end,
vim.api.nvim_list_wins()
)
local line_lengths = vim.tbl_map(function(s) return #s end, content)
line_lengths[#line_lengths + 1] = #title
local pref_width = vim.fn.max(line_lengths)
self.buffer = vim.api.nvim_create_buf(false, true)
vim.api.nvim_buf_set_lines(self.buffer, 0, -1, true, content)
local window = vim.api.nvim_open_win(self.buffer, false, {
title = title,
title_pos = self.window.title_pos,
relative = "editor",
width = vim.fn.min({ vim.o.columns, pref_width })
- margins[2]
- margins[4],
height = #content,
focusable = false,
anchor = "SW",
border = self.window.border,
row = vim.o.lines
- margins[3]
+ ((vim.o.laststatus == 0 or vim.o.laststatus == 1 and #wins == 1) and 1 or 0)
- vim.o.cmdheight,
col = margins[4],
style = "minimal",
noautocmd = true,
} --[[@as vim.api.keyset.win_config]])
vim.api.nvim__redraw({ win = window, valid = true })
return window
end
function Menu:_close()
vim.api.nvim_win_close(self.window, true)
vim.api.nvim_buf_delete(self.buffer, { force = true })
vim.cmd.redraw()
end
function Menu:open(data)
local keys, content = self:_process_items(data.items)
self.window = self:_open_window(data.title, content)
local char = vim.fn.nr2char(vim.fn.getchar())
self:_close()
local entry = keys[char]
if entry and entry.action then return entry.action() end
end
return Menu
|
