142 lines
4.8 KiB
Lua
142 lines
4.8 KiB
Lua
-- This file can be loaded as a telescope extension
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local M = {}
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-- Custom theme picker
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-- Most of the code is copied from telescope colorscheme plugin, mostly for preview creation
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M.theme_switcher = function(opts)
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local pickers, finders, previewers, actions, action_state, utils, conf
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if pcall(require, "telescope") then
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pickers = require "telescope.pickers"
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finders = require "telescope.finders"
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previewers = require "telescope.previewers"
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actions = require "telescope.actions"
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action_state = require "telescope.actions.state"
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utils = require "telescope.utils"
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conf = require("telescope.config").values
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else
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error "Cannot find telescope!"
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end
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local local_utils = require "utils"
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local reload_theme = local_utils.reload_theme
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-- get a table of available themes
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local themes = local_utils.list_themes()
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if next(themes) ~= nil then
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-- save this to use it for later to restore if theme not changed
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local current_theme = vim.g.nvchad_theme
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local new_theme = ""
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local change = false
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-- buffer number and name
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local bufnr = vim.api.nvim_get_current_buf()
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local bufname = vim.api.nvim_buf_get_name(bufnr)
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local previewer
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-- in case its not a normal buffer
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if vim.fn.buflisted(bufnr) ~= 1 then
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local deleted = false
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local function del_win(win_id)
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if win_id and vim.api.nvim_win_is_valid(win_id) then
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utils.buf_delete(vim.api.nvim_win_get_buf(win_id))
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pcall(vim.api.nvim_win_close, win_id, true)
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end
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end
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previewer = previewers.new {
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preview_fn = function(_, entry, status)
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if not deleted then
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deleted = true
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del_win(status.preview_win)
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del_win(status.preview_border_win)
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end
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reload_theme(entry.value)
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end,
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}
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else
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-- show current buffer content in previewer
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previewer = previewers.new_buffer_previewer {
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get_buffer_by_name = function()
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return bufname
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end,
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define_preview = function(self, entry)
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if vim.loop.fs_stat(bufname) then
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conf.buffer_previewer_maker(bufname, self.state.bufnr, { bufname = self.state.bufname })
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else
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local lines = vim.api.nvim_buf_get_lines(bufnr, 0, -1, false)
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vim.api.nvim_buf_set_lines(self.state.bufnr, 0, -1, false, lines)
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end
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reload_theme(entry.value)
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end,
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}
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end
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local picker = pickers.new {
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prompt_title = "Set NvChad color",
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finder = finders.new_table(themes),
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previewer = previewer,
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sorter = conf.generic_sorter(opts),
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attach_mappings = function()
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actions.select_default:replace(
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-- if a entry is selected, change current_theme to that
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function(prompt_bufnr)
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local selection = action_state.get_selected_entry()
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new_theme = selection.value
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change = true
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actions.close(prompt_bufnr)
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end
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)
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return true
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end,
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}
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-- rewrite picker.close_windows
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local close_windows = picker.close_windows
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picker.close_windows = function(status)
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close_windows(status)
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-- now apply the theme, if success, then ask for default theme change
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local final_theme
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if change then
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final_theme = new_theme
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else
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final_theme = current_theme
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end
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if reload_theme(final_theme) then
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if change then
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-- ask for confirmation to set as default theme
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local ans = string.lower(vim.fn.input("Set " .. new_theme .. " as default theme ? [y/N] ")) == "y"
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local_utils.clear_cmdline()
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if ans then
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local_utils.change_theme(current_theme, final_theme)
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else
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-- will be used in restoring nvchad theme var
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final_theme = current_theme
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end
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end
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else
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final_theme = current_theme
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end
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-- set nvchad_theme global var
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vim.g.nvchad_theme = final_theme
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end
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-- launch the telescope picker
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picker:find()
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else
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print("No themes found in " .. vim.fn.stdpath "config" .. "/lua/themes")
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end
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end
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-- register theme swticher as themes to telescope
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local present, telescope = pcall(require, "telescope")
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if present then
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return telescope.register_extension {
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exports = {
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themes = M.theme_switcher,
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},
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}
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else
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error "Cannot find telescope!"
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end
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