lite-xl/data/core/keymap.lua

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local core = require "core"
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local command = require "core.command"
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local config = require "core.config"
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local ime = require "core.ime"
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local keymap = {}
---@alias keymap.shortcut string
---@alias keymap.command string
---@alias keymap.modkey string
---@alias keymap.pressed boolean
---@alias keymap.map table<keymap.shortcut,keymap.command|keymap.command[]>
---@alias keymap.rmap table<keymap.command, keymap.shortcut|keymap.shortcut[]>
---Pressed status of mod keys.
---@type table<keymap.modkey, keymap.pressed>
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keymap.modkeys = {}
---List of commands assigned to a shortcut been the key of the map the shortcut.
---@type keymap.map
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keymap.map = {}
---List of shortcuts assigned to a command been the key of the map the command.
---@type keymap.rmap
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keymap.reverse_map = {}
local macos = PLATFORM == "Mac OS X"
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-- Thanks to mathewmariani, taken from his lite-macos github repository.
local modkeys_os = require("core.modkeys-" .. (macos and "macos" or "generic"))
---@type table<keymap.modkey, keymap.modkey>
local modkey_map = modkeys_os.map
---@type keymap.modkey[]
local modkeys = modkeys_os.keys
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---Normalizes a stroke sequence to follow the modkeys table
---@param stroke string
---@return string
local function normalize_stroke(stroke)
local stroke_table = {}
for key in stroke:gmatch("[^+]+") do
table.insert(stroke_table, key)
end
table.sort(stroke_table, function(a, b)
if a == b then return false end
for _, mod in ipairs(modkeys) do
if a == mod or b == mod then
return a == mod
end
end
return a < b
end)
return table.concat(stroke_table, "+")
end
---Generates a stroke sequence including currently pressed mod keys.
---@param key string
---@return string
local function key_to_stroke(key)
local keys = { key }
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for _, mk in ipairs(modkeys) do
if keymap.modkeys[mk] then
table.insert(keys, mk)
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end
end
return normalize_stroke(table.concat(keys, "+"))
end
---Remove the given value from an array associated to a key in a table.
---@param tbl table<string, string> The table containing the key
---@param k string The key containing the array
---@param v? string The value to remove from the array
local function remove_only(tbl, k, v)
if tbl[k] then
if v then
local j = 0
for i=1, #tbl[k] do
while tbl[k][i + j] == v do
j = j + 1
end
tbl[k][i] = tbl[k][i + j]
end
else
tbl[k] = nil
end
end
end
---Removes from a keymap.map the bindings that are already registered.
---@param map keymap.map
local function remove_duplicates(map)
for stroke, commands in pairs(map) do
local normalized_stroke = normalize_stroke(stroke)
if type(commands) == "string" or type(commands) == "function" then
commands = { commands }
end
if keymap.map[normalized_stroke] then
for _, registered_cmd in ipairs(keymap.map[normalized_stroke]) do
local j = 0
for i=1, #commands do
while commands[i + j] == registered_cmd do
j = j + 1
end
commands[i] = commands[i + j]
end
end
end
if #commands < 1 then
map[stroke] = nil
else
map[stroke] = commands
end
end
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end
---Add bindings by replacing commands that were previously assigned to a shortcut.
---@param map keymap.map
function keymap.add_direct(map)
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for stroke, commands in pairs(map) do
stroke = normalize_stroke(stroke)
if type(commands) == "string" or type(commands) == "function" then
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commands = { commands }
end
if keymap.map[stroke] then
for _, cmd in ipairs(keymap.map[stroke]) do
remove_only(keymap.reverse_map, cmd, stroke)
end
end
keymap.map[stroke] = commands
for _, cmd in ipairs(commands) do
keymap.reverse_map[cmd] = keymap.reverse_map[cmd] or {}
table.insert(keymap.reverse_map[cmd], stroke)
end
end
end
---Adds bindings by appending commands to already registered shortcut or by
---replacing currently assigned commands if overwrite is specified.
---@param map keymap.map
---@param overwrite? boolean
function keymap.add(map, overwrite)
remove_duplicates(map)
for stroke, commands in pairs(map) do
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if macos then
stroke = stroke:gsub("%f[%a]ctrl%f[%A]", "cmd")
end
stroke = normalize_stroke(stroke)
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if overwrite then
if keymap.map[stroke] then
for _, cmd in ipairs(keymap.map[stroke]) do
remove_only(keymap.reverse_map, cmd, stroke)
end
end
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keymap.map[stroke] = commands
else
keymap.map[stroke] = keymap.map[stroke] or {}
for i = #commands, 1, -1 do
table.insert(keymap.map[stroke], 1, commands[i])
end
end
for _, cmd in ipairs(commands) do
keymap.reverse_map[cmd] = keymap.reverse_map[cmd] or {}
table.insert(keymap.reverse_map[cmd], stroke)
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end
end
end
---Unregisters the given shortcut and associated command.
---@param shortcut string
---@param cmd string
function keymap.unbind(shortcut, cmd)
shortcut = normalize_stroke(shortcut)
remove_only(keymap.map, shortcut, cmd)
remove_only(keymap.reverse_map, cmd, shortcut)
end
---Returns all the shortcuts associated to a command unpacked for easy assignment.
---@param cmd string
---@return ...
function keymap.get_binding(cmd)
return table.unpack(keymap.reverse_map[cmd] or {})
end
---Returns all the shortcuts associated to a command packed in a table.
---@param cmd string
---@return table<integer, string> | nil shortcuts
function keymap.get_bindings(cmd)
return keymap.reverse_map[cmd]
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end
--------------------------------------------------------------------------------
-- Events listening
--------------------------------------------------------------------------------
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function keymap.on_key_pressed(k, ...)
local mk = modkey_map[k]
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if mk then
keymap.modkeys[mk] = true
-- work-around for windows where `altgr` is treated as `ctrl+alt`
if mk == "altgr" then
keymap.modkeys["ctrl"] = false
end
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else
local stroke = key_to_stroke(k)
local commands, performed = keymap.map[stroke], false
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if commands then
for _, cmd in ipairs(commands) do
if type(cmd) == "function" then
local ok, res = core.try(cmd, ...)
if ok then
performed = not (res == false)
else
performed = true
end
else
performed = command.perform(cmd, ...)
end
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if performed then break end
end
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return performed
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end
end
return false
end
function keymap.on_mouse_wheel(delta_y, delta_x, ...)
local y_direction = delta_y > 0 and "up" or "down"
local x_direction = delta_x > 0 and "left" or "right"
-- Try sending a "cumulative" event for both scroll directions
if delta_y ~= 0 and delta_x ~= 0 then
local result = keymap.on_key_pressed("wheel" .. y_direction .. x_direction, delta_y, delta_x, ...)
if not result then
result = keymap.on_key_pressed("wheelyx", delta_y, delta_x, ...)
end
if result then return true end
end
-- Otherwise send each direction as its own separate event
local y_result, x_result
if delta_y ~= 0 then
y_result = keymap.on_key_pressed("wheel" .. y_direction, delta_y, ...)
if not y_result then
y_result = keymap.on_key_pressed("wheel", delta_y, ...)
end
end
if delta_x ~= 0 then
x_result = keymap.on_key_pressed("wheel" .. x_direction, delta_x, ...)
if not x_result then
x_result = keymap.on_key_pressed("hwheel", delta_x, ...)
end
end
return y_result or x_result
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end
function keymap.on_mouse_pressed(button, x, y, clicks)
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local click_number = (((clicks - 1) % config.max_clicks) + 1)
return not (keymap.on_key_pressed(click_number .. button:sub(1,1) .. "click", x, y, clicks) or
keymap.on_key_pressed(button:sub(1,1) .. "click", x, y, clicks) or
keymap.on_key_pressed(click_number .. "click", x, y, clicks) or
keymap.on_key_pressed("click", x, y, clicks))
end
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function keymap.on_key_released(k)
local mk = modkey_map[k]
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if mk then
keymap.modkeys[mk] = false
end
end
--------------------------------------------------------------------------------
-- Register default bindings
--------------------------------------------------------------------------------
if macos then
local keymap_macos = require("core.keymap-macos")
keymap_macos(keymap)
return keymap
end
keymap.add_direct {
["ctrl+shift+p"] = "core:find-command",
["ctrl+p"] = "core:find-file",
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["ctrl+o"] = "core:open-file",
["ctrl+n"] = "core:new-doc",
["ctrl+shift+c"] = "core:change-project-folder",
["ctrl+shift+o"] = "core:open-project-folder",
["ctrl+alt+r"] = "core:restart",
["alt+return"] = "core:toggle-fullscreen",
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["f11"] = "core:toggle-fullscreen",
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["alt+shift+j"] = "root:split-left",
["alt+shift+l"] = "root:split-right",
["alt+shift+i"] = "root:split-up",
["alt+shift+k"] = "root:split-down",
["alt+j"] = "root:switch-to-left",
["alt+l"] = "root:switch-to-right",
["alt+i"] = "root:switch-to-up",
["alt+k"] = "root:switch-to-down",
["ctrl+w"] = "root:close",
["ctrl+tab"] = "root:switch-to-next-tab",
["ctrl+shift+tab"] = "root:switch-to-previous-tab",
["ctrl+pageup"] = "root:move-tab-left",
["ctrl+pagedown"] = "root:move-tab-right",
["alt+1"] = "root:switch-to-tab-1",
["alt+2"] = "root:switch-to-tab-2",
["alt+3"] = "root:switch-to-tab-3",
["alt+4"] = "root:switch-to-tab-4",
["alt+5"] = "root:switch-to-tab-5",
["alt+6"] = "root:switch-to-tab-6",
["alt+7"] = "root:switch-to-tab-7",
["alt+8"] = "root:switch-to-tab-8",
["alt+9"] = "root:switch-to-tab-9",
["wheel"] = "root:scroll",
["hwheel"] = "root:horizontal-scroll",
["shift+wheel"] = "root:horizontal-scroll",
["wheelup"] = "root:scroll-hovered-tabs-backward",
["wheeldown"] = "root:scroll-hovered-tabs-forward",
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["ctrl+f"] = "find-replace:find",
["ctrl+r"] = "find-replace:replace",
["f3"] = "find-replace:repeat-find",
["shift+f3"] = "find-replace:previous-find",
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["ctrl+i"] = "find-replace:toggle-sensitivity",
["ctrl+shift+i"] = "find-replace:toggle-regex",
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["ctrl+g"] = "doc:go-to-line",
["ctrl+s"] = "doc:save",
["ctrl+shift+s"] = "doc:save-as",
["ctrl+z"] = "doc:undo",
["ctrl+y"] = "doc:redo",
["ctrl+x"] = "doc:cut",
["ctrl+c"] = "doc:copy",
["ctrl+v"] = "doc:paste",
["insert"] = "doc:toggle-overwrite",
["ctrl+insert"] = "doc:copy",
["shift+insert"] = "doc:paste",
["escape"] = { "command:escape", "doc:select-none", "dialog:select-no" },
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["tab"] = { "command:complete", "doc:indent" },
["shift+tab"] = "doc:unindent",
["backspace"] = "doc:backspace",
["shift+backspace"] = "doc:backspace",
["ctrl+backspace"] = "doc:delete-to-previous-word-start",
["ctrl+shift+backspace"] = "doc:delete-to-previous-word-start",
["delete"] = "doc:delete",
["shift+delete"] = "doc:delete",
["ctrl+delete"] = "doc:delete-to-next-word-end",
["ctrl+shift+delete"] = "doc:delete-to-next-word-end",
["return"] = { "command:submit", "doc:newline", "dialog:select" },
["keypad enter"] = { "command:submit", "doc:newline", "dialog:select" },
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["ctrl+return"] = "doc:newline-below",
["ctrl+shift+return"] = "doc:newline-above",
["ctrl+j"] = "doc:join-lines",
["ctrl+a"] = "doc:select-all",
["ctrl+d"] = { "find-replace:select-add-next", "doc:select-word" },
["ctrl+f3"] = "find-replace:select-next",
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["ctrl+shift+f3"] = "find-replace:select-previous",
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["ctrl+l"] = "doc:select-lines",
["ctrl+shift+l"] = { "find-replace:select-add-all", "doc:select-word" },
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["ctrl+/"] = "doc:toggle-line-comments",
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["ctrl+shift+/"] = "doc:toggle-block-comments",
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["ctrl+up"] = "doc:move-lines-up",
["ctrl+down"] = "doc:move-lines-down",
["ctrl+shift+d"] = "doc:duplicate-lines",
["ctrl+shift+k"] = "doc:delete-lines",
["left"] = { "doc:move-to-previous-char", "dialog:previous-entry" },
["right"] = { "doc:move-to-next-char", "dialog:next-entry"},
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["up"] = { "command:select-previous", "doc:move-to-previous-line" },
["down"] = { "command:select-next", "doc:move-to-next-line" },
["ctrl+left"] = "doc:move-to-previous-word-start",
["ctrl+right"] = "doc:move-to-next-word-end",
["ctrl+["] = "doc:move-to-previous-block-start",
["ctrl+]"] = "doc:move-to-next-block-end",
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["home"] = "doc:move-to-start-of-indentation",
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["end"] = "doc:move-to-end-of-line",
["ctrl+home"] = "doc:move-to-start-of-doc",
["ctrl+end"] = "doc:move-to-end-of-doc",
["pageup"] = "doc:move-to-previous-page",
["pagedown"] = "doc:move-to-next-page",
["shift+1lclick"] = "doc:select-to-cursor",
["ctrl+1lclick"] = "doc:split-cursor",
["1lclick"] = "doc:set-cursor",
["2lclick"] = { "doc:set-cursor-word", "emptyview:new-doc", "tabbar:new-doc" },
["3lclick"] = "doc:set-cursor-line",
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["shift+left"] = "doc:select-to-previous-char",
["shift+right"] = "doc:select-to-next-char",
["shift+up"] = "doc:select-to-previous-line",
["shift+down"] = "doc:select-to-next-line",
["ctrl+shift+left"] = "doc:select-to-previous-word-start",
["ctrl+shift+right"] = "doc:select-to-next-word-end",
["ctrl+shift+["] = "doc:select-to-previous-block-start",
["ctrl+shift+]"] = "doc:select-to-next-block-end",
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["shift+home"] = "doc:select-to-start-of-indentation",
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["shift+end"] = "doc:select-to-end-of-line",
["ctrl+shift+home"] = "doc:select-to-start-of-doc",
["ctrl+shift+end"] = "doc:select-to-end-of-doc",
["shift+pageup"] = "doc:select-to-previous-page",
["shift+pagedown"] = "doc:select-to-next-page",
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["ctrl+shift+up"] = "doc:create-cursor-previous-line",
["ctrl+shift+down"] = "doc:create-cursor-next-line"
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}
return keymap