382 lines
14 KiB
Lua
382 lines
14 KiB
Lua
|
---------------------------------------------------------------------------
|
||
|
|
-- @author Julien Danjou <julien@danjou.info>
|
||
|
|
-- @copyright 2008 Julien Danjou
|
||
|
|
-- @release v3.4.9
|
||
|
|
---------------------------------------------------------------------------
|
||
|
|
|
||
|
|
-- Grab environment we need
|
||
|
|
local assert = assert
|
||
|
|
local io = io
|
||
|
|
local table = table
|
||
|
|
local math = math
|
||
|
|
local ipairs = ipairs
|
||
|
|
local pcall = pcall
|
||
|
|
local capi =
|
||
|
|
{
|
||
|
|
keygrabber = keygrabber,
|
||
|
|
selection = selection
|
||
|
|
}
|
||
|
|
local util = require("awful.util")
|
||
|
|
local beautiful = require("beautiful")
|
||
|
|
|
||
|
|
--- Prompt module for awful
|
||
|
|
module("awful.prompt")
|
||
|
|
|
||
|
|
--- Private data
|
||
|
|
local data = {}
|
||
|
|
data.history = {}
|
||
|
|
|
||
|
|
-- Load history file in history table
|
||
|
|
-- @param id The data.history identifier which is the path to the filename
|
||
|
|
-- @param max Optional parameter, the maximum number of entries in file
|
||
|
|
local function history_check_load(id, max)
|
||
|
|
if id and id ~= ""
|
||
|
|
and not data.history[id] then
|
||
|
|
data.history[id] = { max = 50, table = {} }
|
||
|
|
|
||
|
|
if max then
|
||
|
|
data.history[id].max = max
|
||
|
|
end
|
||
|
|
|
||
|
|
local f = io.open(id, "r")
|
||
|
|
|
||
|
|
-- Read history file
|
||
|
|
if f then
|
||
|
|
for line in f:lines() do
|
||
|
|
table.insert(data.history[id].table, line)
|
||
|
|
if #data.history[id].table >= data.history[id].max then
|
||
|
|
break
|
||
|
|
end
|
||
|
|
end
|
||
|
|
f:close()
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Save history table in history file
|
||
|
|
-- @param id The data.history identifier
|
||
|
|
local function history_save(id)
|
||
|
|
if data.history[id] then
|
||
|
|
local f = io.open(id, "w")
|
||
|
|
if not f then
|
||
|
|
local i = 0
|
||
|
|
for d in id:gmatch(".-/") do
|
||
|
|
i = i + #d
|
||
|
|
end
|
||
|
|
util.mkdir(id:sub(1, i - 1))
|
||
|
|
f = assert(io.open(id, "w"))
|
||
|
|
end
|
||
|
|
for i = 1, math.min(#data.history[id].table, data.history[id].max) do
|
||
|
|
f:write(data.history[id].table[i] .. "\n")
|
||
|
|
end
|
||
|
|
f:close()
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Return the number of items in history table regarding the id
|
||
|
|
-- @param id The data.history identifier
|
||
|
|
-- @return the number of items in history table, -1 if history is disabled
|
||
|
|
local function history_items(id)
|
||
|
|
if data.history[id] then
|
||
|
|
return #data.history[id].table
|
||
|
|
else
|
||
|
|
return -1
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Add an entry to the history file
|
||
|
|
-- @param id The data.history identifier
|
||
|
|
-- @param command The command to add
|
||
|
|
local function history_add(id, command)
|
||
|
|
if data.history[id] then
|
||
|
|
if command ~= ""
|
||
|
|
and command ~= data.history[id].table[#data.history[id].table] then
|
||
|
|
table.insert(data.history[id].table, command)
|
||
|
|
|
||
|
|
-- Do not exceed our max_cmd
|
||
|
|
if #data.history[id].table > data.history[id].max then
|
||
|
|
table.remove(data.history[id].table, 1)
|
||
|
|
end
|
||
|
|
|
||
|
|
history_save(id)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
-- Draw the prompt text with a cursor.
|
||
|
|
-- @param args The table of arguments.
|
||
|
|
-- @param text The text.
|
||
|
|
-- @param font The font.
|
||
|
|
-- @param prompt The text prefix.
|
||
|
|
-- @param text_color The text color.
|
||
|
|
-- @param cursor_color The cursor color.
|
||
|
|
-- @param cursor_pos The cursor position.
|
||
|
|
-- @param cursor_ul The cursor underline style.
|
||
|
|
-- @param selectall If true cursor is rendered on the entire text.
|
||
|
|
local function prompt_text_with_cursor(args)
|
||
|
|
local char, spacer, text_start, text_end, ret
|
||
|
|
local text = args.text or ""
|
||
|
|
local prompt = args.prompt or ""
|
||
|
|
local underline = args.cursor_ul or "none"
|
||
|
|
|
||
|
|
if args.selectall then
|
||
|
|
if #text == 0 then char = " " else char = util.escape(text) end
|
||
|
|
spacer = " "
|
||
|
|
text_start = ""
|
||
|
|
text_end = ""
|
||
|
|
elseif #text < args.cursor_pos then
|
||
|
|
char = " "
|
||
|
|
spacer = ""
|
||
|
|
text_start = util.escape(text)
|
||
|
|
text_end = ""
|
||
|
|
else
|
||
|
|
char = util.escape(text:sub(args.cursor_pos, args.cursor_pos))
|
||
|
|
spacer = " "
|
||
|
|
text_start = util.escape(text:sub(1, args.cursor_pos - 1))
|
||
|
|
text_end = util.escape(text:sub(args.cursor_pos + 1))
|
||
|
|
end
|
||
|
|
|
||
|
|
ret = prompt .. text_start .. "<span background=\"" .. util.color_strip_alpha(args.cursor_color) .. "\" foreground=\"" .. util.color_strip_alpha(args.text_color) .. "\" underline=\"" .. underline .. "\">" .. char .. "</span>" .. text_end .. spacer
|
||
|
|
if args.font then ret = "<span font_desc='" .. args.font .. "'>" .. ret .. "</span>" end
|
||
|
|
return ret
|
||
|
|
end
|
||
|
|
|
||
|
|
--- Run a prompt in a box.
|
||
|
|
-- @param args A table with optional arguments: fg_cursor, bg_cursor, ul_cursor, prompt, text, selectall, font, autoexec.
|
||
|
|
-- @param textbox The textbox to use for the prompt.
|
||
|
|
-- @param exe_callback The callback function to call with command as argument when finished.
|
||
|
|
-- @param completion_callback The callback function to call to get completion.
|
||
|
|
-- @param history_path Optional parameter: file path where the history should be saved, set nil to disable history
|
||
|
|
-- @param history_max Optional parameter: set the maximum entries in history file, 50 by default
|
||
|
|
-- @param done_callback Optional parameter: the callback function to always call without arguments, regardless of whether the prompt was cancelled.
|
||
|
|
function run(args, textbox, exe_callback, completion_callback, history_path, history_max, done_callback)
|
||
|
|
local theme = beautiful.get()
|
||
|
|
if not args then args = {} end
|
||
|
|
local command = args.text or ""
|
||
|
|
local command_before_comp
|
||
|
|
local cur_pos_before_comp
|
||
|
|
local prettyprompt = args.prompt or ""
|
||
|
|
local inv_col = args.fg_cursor or theme.fg_focus or "black"
|
||
|
|
local cur_col = args.bg_cursor or theme.bg_focus or "white"
|
||
|
|
local cur_ul = args.ul_cursor
|
||
|
|
local text = args.text or ""
|
||
|
|
local font = args.font or theme.font
|
||
|
|
local selectall = args.selectall
|
||
|
|
|
||
|
|
history_check_load(history_path, history_max)
|
||
|
|
local history_index = history_items(history_path) + 1
|
||
|
|
-- The cursor position
|
||
|
|
local cur_pos = (selectall and 1) or text:wlen() + 1
|
||
|
|
-- The completion element to use on completion request.
|
||
|
|
local ncomp = 1
|
||
|
|
if not textbox or not exe_callback then
|
||
|
|
return
|
||
|
|
end
|
||
|
|
textbox.text = prompt_text_with_cursor{
|
||
|
|
text = text, text_color = inv_col, cursor_color = cur_col,
|
||
|
|
cursor_pos = cur_pos, cursor_ul = cur_ul, selectall = selectall,
|
||
|
|
font = font, prompt = prettyprompt }
|
||
|
|
|
||
|
|
local exec = function()
|
||
|
|
textbox.text = ""
|
||
|
|
history_add(history_path, command)
|
||
|
|
capi.keygrabber.stop()
|
||
|
|
exe_callback(command)
|
||
|
|
if done_callback then done_callback() end
|
||
|
|
end
|
||
|
|
|
||
|
|
capi.keygrabber.run(
|
||
|
|
function (modifiers, key, event)
|
||
|
|
if event ~= "press" then return true end
|
||
|
|
-- Convert index array to hash table
|
||
|
|
local mod = {}
|
||
|
|
for k, v in ipairs(modifiers) do mod[v] = true end
|
||
|
|
-- Get out cases
|
||
|
|
if (mod.Control and (key == "c" or key == "g"))
|
||
|
|
or (not mod.Control and key == "Escape") then
|
||
|
|
textbox.text = ""
|
||
|
|
if done_callback then done_callback() end
|
||
|
|
return false
|
||
|
|
elseif (mod.Control and (key == "j" or key == "m"))
|
||
|
|
or (not mod.Control and key == "Return")
|
||
|
|
or (not mod.Control and key == "KP_Enter") then
|
||
|
|
exec()
|
||
|
|
-- We already unregistered ourselves so we don't want to return
|
||
|
|
-- true, otherwise we may unregister someone else.
|
||
|
|
return true
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Control cases
|
||
|
|
if mod.Control then
|
||
|
|
selectall = nil
|
||
|
|
if key == "a" then
|
||
|
|
cur_pos = 1
|
||
|
|
elseif key == "b" then
|
||
|
|
if cur_pos > 1 then
|
||
|
|
cur_pos = cur_pos - 1
|
||
|
|
end
|
||
|
|
elseif key == "d" then
|
||
|
|
if cur_pos <= #command then
|
||
|
|
command = command:sub(1, cur_pos - 1) .. command:sub(cur_pos + 1)
|
||
|
|
end
|
||
|
|
elseif key == "e" then
|
||
|
|
cur_pos = #command + 1
|
||
|
|
elseif key == "f" then
|
||
|
|
if cur_pos <= #command then
|
||
|
|
cur_pos = cur_pos + 1
|
||
|
|
end
|
||
|
|
elseif key == "h" then
|
||
|
|
if cur_pos > 1 then
|
||
|
|
command = command:sub(1, cur_pos - 2) .. command:sub(cur_pos)
|
||
|
|
cur_pos = cur_pos - 1
|
||
|
|
end
|
||
|
|
elseif key == "k" then
|
||
|
|
command = command:sub(1, cur_pos - 1)
|
||
|
|
elseif key == "u" then
|
||
|
|
command = command:sub(cur_pos, #command)
|
||
|
|
cur_pos = 1
|
||
|
|
elseif key == "w" or key == "BackSpace" then
|
||
|
|
local wstart = 1
|
||
|
|
local wend = 1
|
||
|
|
local cword_start = 1
|
||
|
|
local cword_end = 1
|
||
|
|
while wend < cur_pos do
|
||
|
|
wend = command:find("[{[(,.:;_-+=@/ ]", wstart)
|
||
|
|
if not wend then wend = #command + 1 end
|
||
|
|
if cur_pos >= wstart and cur_pos <= wend + 1 then
|
||
|
|
cword_start = wstart
|
||
|
|
cword_end = cur_pos - 1
|
||
|
|
break
|
||
|
|
end
|
||
|
|
wstart = wend + 1
|
||
|
|
end
|
||
|
|
command = command:sub(1, cword_start - 1) .. command:sub(cword_end + 1)
|
||
|
|
cur_pos = cword_start
|
||
|
|
end
|
||
|
|
else
|
||
|
|
if completion_callback then
|
||
|
|
if key == "Tab" or key == "ISO_Left_Tab" then
|
||
|
|
if key == "ISO_Left_Tab" then
|
||
|
|
if ncomp == 1 then return true end
|
||
|
|
if ncomp == 2 then
|
||
|
|
command = command_before_comp
|
||
|
|
textbox.text = prompt_text_with_cursor{
|
||
|
|
text = command_before_comp, text_color = inv_col, cursor_color = cur_col,
|
||
|
|
cursor_pos = cur_pos, cursor_ul = cur_ul, selectall = selectall,
|
||
|
|
font = font, prompt = prettyprompt }
|
||
|
|
return true
|
||
|
|
end
|
||
|
|
|
||
|
|
ncomp = ncomp - 2
|
||
|
|
elseif ncomp == 1 then
|
||
|
|
command_before_comp = command
|
||
|
|
cur_pos_before_comp = cur_pos
|
||
|
|
end
|
||
|
|
local matches
|
||
|
|
command, cur_pos, matches = completion_callback(command_before_comp, cur_pos_before_comp, ncomp)
|
||
|
|
ncomp = ncomp + 1
|
||
|
|
key = ""
|
||
|
|
-- execute if only one match found and autoexec flag set
|
||
|
|
if matches and #matches == 1 and args.autoexec then
|
||
|
|
exec()
|
||
|
|
return true
|
||
|
|
end
|
||
|
|
else
|
||
|
|
ncomp = 1
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Typin cases
|
||
|
|
if mod.Shift and key == "Insert" then
|
||
|
|
local selection = capi.selection()
|
||
|
|
if selection then
|
||
|
|
-- Remove \n
|
||
|
|
local n = selection:find("\n")
|
||
|
|
if n then
|
||
|
|
selection = selection:sub(1, n - 1)
|
||
|
|
end
|
||
|
|
command = command:sub(1, cur_pos - 1) .. selection .. command:sub(cur_pos)
|
||
|
|
cur_pos = cur_pos + #selection
|
||
|
|
end
|
||
|
|
elseif key == "Home" then
|
||
|
|
cur_pos = 1
|
||
|
|
elseif key == "End" then
|
||
|
|
cur_pos = #command + 1
|
||
|
|
elseif key == "BackSpace" then
|
||
|
|
if cur_pos > 1 then
|
||
|
|
command = command:sub(1, cur_pos - 2) .. command:sub(cur_pos)
|
||
|
|
cur_pos = cur_pos - 1
|
||
|
|
end
|
||
|
|
elseif key == "Delete" then
|
||
|
|
command = command:sub(1, cur_pos - 1) .. command:sub(cur_pos + 1)
|
||
|
|
elseif key == "Left" then
|
||
|
|
cur_pos = cur_pos - 1
|
||
|
|
elseif key == "Right" then
|
||
|
|
cur_pos = cur_pos + 1
|
||
|
|
elseif key == "Up" then
|
||
|
|
if history_index > 1 then
|
||
|
|
history_index = history_index - 1
|
||
|
|
|
||
|
|
command = data.history[history_path].table[history_index]
|
||
|
|
cur_pos = #command + 2
|
||
|
|
end
|
||
|
|
elseif key == "Down" then
|
||
|
|
if history_index < history_items(history_path) then
|
||
|
|
history_index = history_index + 1
|
||
|
|
|
||
|
|
command = data.history[history_path].table[history_index]
|
||
|
|
cur_pos = #command + 2
|
||
|
|
elseif history_index == history_items(history_path) then
|
||
|
|
history_index = history_index + 1
|
||
|
|
|
||
|
|
command = ""
|
||
|
|
cur_pos = 1
|
||
|
|
end
|
||
|
|
else
|
||
|
|
-- wlen() is UTF-8 aware but #key is not,
|
||
|
|
-- so check that we have one UTF-8 char but advance the cursor of # position
|
||
|
|
if key:wlen() == 1 then
|
||
|
|
if selectall then command = "" end
|
||
|
|
command = command:sub(1, cur_pos - 1) .. key .. command:sub(cur_pos)
|
||
|
|
cur_pos = cur_pos + #key
|
||
|
|
end
|
||
|
|
end
|
||
|
|
if cur_pos < 1 then
|
||
|
|
cur_pos = 1
|
||
|
|
elseif cur_pos > #command + 1 then
|
||
|
|
cur_pos = #command + 1
|
||
|
|
end
|
||
|
|
selectall = nil
|
||
|
|
end
|
||
|
|
|
||
|
|
-- Update textbox
|
||
|
|
local function update()
|
||
|
|
textbox.text = prompt_text_with_cursor{
|
||
|
|
text = command, text_color = inv_col, cursor_color = cur_col,
|
||
|
|
cursor_pos = cur_pos, cursor_ul = cur_ul, selectall = selectall,
|
||
|
|
font = font, prompt = prettyprompt }
|
||
|
|
end
|
||
|
|
|
||
|
|
local success = pcall(update)
|
||
|
|
while not success do
|
||
|
|
-- TODO UGLY HACK TODO
|
||
|
|
-- Setting the text failed. Most likely reason is that the user
|
||
|
|
-- entered a multibyte character and pressed backspace which only
|
||
|
|
-- removed the last byte. Let's remove another byte.
|
||
|
|
if cur_pos <= 1 then
|
||
|
|
-- No text left?!
|
||
|
|
break
|
||
|
|
end
|
||
|
|
|
||
|
|
command = command:sub(1, cur_pos - 2) .. command:sub(cur_pos)
|
||
|
|
cur_pos = cur_pos - 1
|
||
|
|
success = pcall(update)
|
||
|
|
end
|
||
|
|
|
||
|
|
return true
|
||
|
|
end)
|
||
|
|
end
|
||
|
|
|
||
|
|
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
|