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108 lines
3.7 KiB
Lua
108 lines
3.7 KiB
Lua
local M = {}
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--- Prompts the user to pick from a list of items, allowing arbitrary (potentially asynchronous)
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--- work until `on_choice`.
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---
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---@param items table Arbitrary items
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---@param opts table Additional options
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--- - prompt (string|nil)
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--- Text of the prompt. Defaults to `Select one of:`
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--- - format_item (function item -> text)
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--- Function to format an
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--- individual item from `items`. Defaults to `tostring`.
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--- - kind (string|nil)
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--- Arbitrary hint string indicating the item shape.
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--- Plugins reimplementing `vim.ui.select` may wish to
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--- use this to infer the structure or semantics of
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--- `items`, or the context in which select() was called.
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---@param on_choice function ((item|nil, idx|nil) -> ())
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--- Called once the user made a choice.
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--- `idx` is the 1-based index of `item` within `items`.
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--- `nil` if the user aborted the dialog.
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---
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---
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--- Example:
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--- <pre>lua
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--- vim.ui.select({ 'tabs', 'spaces' }, {
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--- prompt = 'Select tabs or spaces:',
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--- format_item = function(item)
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--- return "I'd like to choose " .. item
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--- end,
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--- }, function(choice)
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--- if choice == 'spaces' then
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--- vim.o.expandtab = true
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--- else
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--- vim.o.expandtab = false
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--- end
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--- end)
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--- </pre>
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function M.select(items, opts, on_choice)
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vim.validate({
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items = { items, 'table', false },
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on_choice = { on_choice, 'function', false },
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})
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opts = opts or {}
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local choices = { opts.prompt or 'Select one of:' }
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local format_item = opts.format_item or tostring
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for i, item in pairs(items) do
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table.insert(choices, string.format('%d: %s', i, format_item(item)))
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end
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local choice = vim.fn.inputlist(choices)
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if choice < 1 or choice > #items then
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on_choice(nil, nil)
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else
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on_choice(items[choice], choice)
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end
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end
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--- Prompts the user for input, allowing arbitrary (potentially asynchronous) work until
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--- `on_confirm`.
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---
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---@param opts table Additional options. See |input()|
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--- - prompt (string|nil)
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--- Text of the prompt
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--- - default (string|nil)
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--- Default reply to the input
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--- - completion (string|nil)
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--- Specifies type of completion supported
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--- for input. Supported types are the same
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--- that can be supplied to a user-defined
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--- command using the "-complete=" argument.
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--- See |:command-completion|
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--- - highlight (function)
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--- Function that will be used for highlighting
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--- user inputs.
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---@param on_confirm function ((input|nil) -> ())
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--- Called once the user confirms or abort the input.
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--- `input` is what the user typed (it might be
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--- an empty string if nothing was entered), or
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--- `nil` if the user aborted the dialog.
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---
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--- Example:
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--- <pre>lua
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--- vim.ui.input({ prompt = 'Enter value for shiftwidth: ' }, function(input)
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--- vim.o.shiftwidth = tonumber(input)
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--- end)
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--- </pre>
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function M.input(opts, on_confirm)
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vim.validate({
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on_confirm = { on_confirm, 'function', false },
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})
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opts = (opts and not vim.tbl_isempty(opts)) and opts or vim.empty_dict()
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-- Note that vim.fn.input({}) returns an empty string when cancelled.
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-- vim.ui.input() should distinguish aborting from entering an empty string.
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local _canceled = vim.NIL
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opts = vim.tbl_extend('keep', opts, { cancelreturn = _canceled })
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local ok, input = pcall(vim.fn.input, opts)
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if not ok or input == _canceled then
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on_confirm(nil)
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else
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on_confirm(input)
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end
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end
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return M
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