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|
---Helper functions to parse tailwind color variables
--@module colorizer.tailwind
local api = vim.api
local tailwind = {}
-- use a different namespace for tailwind as will be cleared if kept in Default namespace
local DEFAULT_NAMESPACE_TAILWIND = api.nvim_create_namespace "colorizer_tailwind"
local TAILWIND = {}
--- Cleanup tailwind variables and autocmd
---@param buf number
function tailwind.cleanup(buf)
if TAILWIND[buf] and TAILWIND[buf].AU_ID and TAILWIND[buf].AU_ID[1] then
pcall(api.nvim_del_autocmd, TAILWIND[buf].AU_ID[1])
pcall(api.nvim_del_autocmd, TAILWIND[buf].AU_ID[2])
end
api.nvim_buf_clear_namespace(buf, DEFAULT_NAMESPACE_TAILWIND, 0, -1)
TAILWIND[buf] = nil
end
local function highlight_tailwind(buf, ns, options, add_highlight)
-- it can take some time to actually fetch the results
-- on top of that, tailwindcss is quite slow in neovim
vim.defer_fn(function()
if not TAILWIND[buf] or not TAILWIND[buf].CLIENT or not TAILWIND[buf].CLIENT.request then
return
end
local opts = { textDocument = vim.lsp.util.make_text_document_params() }
--@local
---@diagnostic disable-next-line: param-type-mismatch
TAILWIND[buf].CLIENT.request("textDocument/documentColor", opts, function(err, results, _, _)
if err == nil and results ~= nil then
local data, line_start, line_end = {}, nil, nil
for _, color in pairs(results) do
local cur_line = color.range.start.line
if line_start then
if cur_line < line_start then
line_start = cur_line
end
else
line_start = cur_line
end
local end_line = color.range["end"].line
if line_end then
if end_line > line_end then
line_end = end_line
end
else
line_end = end_line
end
local r, g, b, a = color.color.red or 0, color.color.green or 0, color.color.blue or 0, color.color.alpha or 0
local rgb_hex = string.format("%02x%02x%02x", r * a * 255, g * a * 255, b * a * 255)
local first_col = color.range.start.character
local end_col = color.range["end"].character
data[cur_line] = data[cur_line] or {}
table.insert(data[cur_line], { rgb_hex = rgb_hex, range = { first_col, end_col } })
end
add_highlight(buf, ns, line_start or 0, line_end and (line_end + 2) or -1, data, options)
end
end)
end, 10)
end
--- highlight buffer using values returned by tailwindcss
-- To see these table information, see |colorizer.buffer|
---@param buf number
---@param options table
---@param options_local table
---@param add_highlight function
function tailwind.setup_lsp_colors(buf, options, options_local, add_highlight)
TAILWIND[buf] = TAILWIND[buf] or {}
TAILWIND[buf].AU_ID = TAILWIND[buf].AU_ID or {}
if not TAILWIND[buf].CLIENT or TAILWIND[buf].CLIENT.is_stopped() then
if vim.version().minor >= 8 then
-- create the autocmds so tailwind colours only activate when tailwindcss lsp is active
if not TAILWIND[buf].AU_CREATED then
api.nvim_buf_clear_namespace(buf, DEFAULT_NAMESPACE_TAILWIND, 0, -1)
TAILWIND[buf].AU_ID[1] = api.nvim_create_autocmd("LspAttach", {
group = options_local.__augroup_id,
buffer = buf,
callback = function(args)
local ok, client = pcall(vim.lsp.get_client_by_id, args.data.client_id)
if ok then
if client.name == "tailwindcss" and client.supports_method "textDocument/documentColor" then
-- wait 100 ms for the first request
TAILWIND[buf].CLIENT = client
vim.defer_fn(function()
highlight_tailwind(buf, DEFAULT_NAMESPACE_TAILWIND, options, add_highlight)
end, 100)
end
end
end,
})
-- make sure the autocmds are deleted after lsp server is closed
TAILWIND[buf].AU_ID[2] = api.nvim_create_autocmd("LspDetach", {
group = options_local.__augroup_id,
buffer = buf,
callback = function()
tailwind.cleanup(buf)
end,
})
TAILWIND[buf].AU_CREATED = true
end
end
-- this will be triggered when no lsp is attached
api.nvim_buf_clear_namespace(buf, DEFAULT_NAMESPACE_TAILWIND, 0, -1)
TAILWIND[buf].CLIENT = nil
local ok, tailwind_client = pcall(function()
return vim.lsp.get_active_clients { bufnr = buf, name = "tailwindcss" }
end)
if not ok then
return
end
ok = false
for _, cl in pairs(tailwind_client) do
if cl["name"] == "tailwindcss" then
tailwind_client = cl
ok = true
break
end
end
if
not ok
and (
vim.tbl_isempty(tailwind_client or {})
or not tailwind_client
or not tailwind_client.supports_method
or not tailwind_client.supports_method "textDocument/documentColor"
)
then
return true
end
TAILWIND[buf].CLIENT = tailwind_client
-- wait 500 ms for the first request
vim.defer_fn(function()
highlight_tailwind(buf, DEFAULT_NAMESPACE_TAILWIND, options, add_highlight)
end, 1000)
return true
end
-- only try to do tailwindcss highlight if lsp is attached
if TAILWIND[buf].CLIENT then
highlight_tailwind(buf, DEFAULT_NAMESPACE_TAILWIND, options, add_highlight)
end
end
return tailwind
|
