dotfiles/symlinks/config/nvim/plugin/luapopup.lua

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-- Luapopup - get a popup with lua buffer and run the code in neovim afterwards
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-- Provides the same for fennel too
local popup = require("nui.popup")
local event = require("nui.utils.autocmd").event
local lua_utils = require("esensar.lua_utils")
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local last_lua_win
local last_fennel_win
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local popup_type = {
lua = 1,
fennel = 2,
}
local restore_commands = {
[popup_type.lua] = ":LuaPopupRestore",
[popup_type.fennel] = ":FennelPopupRestore",
}
local eval_functions = {
[popup_type.lua] = lua_utils.eval_lua_buffer,
[popup_type.fennel] = lua_utils.eval_fennel_buffer,
}
local validate_functions = {
[popup_type.lua] = lua_utils.is_valid_lua_code_buffer,
[popup_type.fennel] = function(_)
-- No validation for fennel
return true
end,
}
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local function get_last_win(type)
if type == popup_type.lua then
return last_lua_win
elseif type == popup_type.fennel then
return last_fennel_win
end
return nil
end
local function set_last_win(type, win)
if type == popup_type.lua then
last_lua_win = win
elseif type == popup_type.fennel then
last_fennel_win = win
end
end
local function popup_and_run(type)
local last_win = get_last_win(type)
if last_win then
last_win:unmount()
end
local hidden = false
local win = popup({
enter = true,
focusable = true,
border = {
style = "rounded",
},
position = "50%",
size = {
width = "80%",
height = "60%",
},
buf_options = {
modifiable = true,
readonly = false,
filetype = "lua",
},
})
local function cancel()
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vim.notify("Cancelled operation, code not run! Use " .. restore_commands[type] .. " to restore buffer")
win:hide()
end
local function run()
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local st, r = eval_functions[type](win.bufnr)
if st == false then
vim.notify("Execution failed: \n" .. r, vim.log.levels.ERROR)
else
vim.notify("Successfully executed operation!")
end
end
-- mount/open the component
win:mount()
-- map keys
win:map("n", "<CR>", function(_)
local valid, message = validate_functions[type](win.bufnr)
if not valid then
vim.notify("Parsing code failed: \n" .. vim.inspect(message), vim.log.levels.ERROR)
else
hidden = true
win:hide()
run()
end
end, { noremap = true })
win:map("n", "<Esc>", function(_)
cancel()
end, { noremap = true })
-- unmount component when cursor leaves buffer
win:on(event.BufLeave, function()
-- Do not cancel if already hidden
if not hidden then
cancel()
end
end)
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set_last_win(type, win)
end
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local function restore_popup(type)
get_last_win(type):show()
end
vim.api.nvim_create_user_command("LuaPopup", function()
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popup_and_run(popup_type.lua)
end, { desc = "Show a popup for writing lua code that will be executed after closing" })
vim.api.nvim_create_user_command("LuaPopupRestore", function()
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if get_last_win(popup_type.lua) then
restore_popup(popup_type.lua)
else
vim.notify("No popup to restore! Use :LuaPopup first!", vim.log.levels.WARN)
end
end, { desc = "Restore last popup displayed with LuaPopup command" })
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vim.api.nvim_create_user_command("FennelPopup", function()
popup_and_run(popup_type.fennel)
end, { desc = "Show a popup for writing fennel code that will be executed after closing" })
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vim.api.nvim_create_user_command("FennelPopupRestore", function()
if get_last_win(popup_type.fennel) then
restore_popup(popup_type.fennel)
else
vim.notify("No popup to restore! Use :FennelPopup first!", vim.log.levels.WARN)
end
end, { desc = "Restore last popup displayed with FennelPopup command" })