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Add a way to cache default keymaps, impl function for adding temporary

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keymaps (i.e keymaps during debugging) which saves original keymaps if
it overrides them at restores them upon deletion.
This commit is contained in:
Martin Larsson 2025-01-13 12:08:07 +01:00
parent ec921c73a3
commit 9b3a9ece1e
2 changed files with 71 additions and 21 deletions
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2
home/.config/nvim/lua/plugs/nvim-dap.lua
View file

@ -79,7 +79,7 @@ return {
local function enter_debug_mode()
dapui.open()
if not are_stepping_keymaps_active then
utils.add_keymaps(stepping_keymaps)
utils.add_temporary_keymaps(stepping_keymaps)
are_stepping_keymaps_active = true
end

90
home/.config/nvim/lua/utils.lua
View file

@ -1,5 +1,7 @@
local M = {}
local overridden_default_keymaps = {}
local function is_single_keymap_table(map_table)
assert(map_table)
return map_table.n or map_table.t or map_table.i or map_table.v or map_table.x or map_table.o
@ -73,44 +75,92 @@ function M.add_opts_to_all_mappings(mappings, opts)
end
end
local function pass_keymap_tbl_to_fn(maps, fn)
if is_single_keymap_table(maps) then
fn(maps)
else
for _, map_table in pairs(maps) do
fn(map_table)
end
end
end
local function get_keymaps(mode, buffer)
if buffer then
return vim.api.nvim_buf_get_keymap(buffer, mode)
end
return vim.api.nvim_get_keymap(mode)
end
function M.add_temporary_keymaps(maps)
assert(maps)
pass_keymap_tbl_to_fn(maps, function(map_table)
for mode, entries in pairs(map_table) do
-- We make an assumptino here which is that all the entries are buffers, or not buffers.
-- Meaning, we only check the first entry and trust that the rest are the same.
local result = get_keymaps(mode, (function()
for _, entry in pairs(entries) do
-- nil buffer is treated as a global keymap
return entry.buffer
end
end)())
for code, _ in pairs(entries) do
for _, map in ipairs(result) do
if map.lhs == code then
if not overridden_default_keymaps[mode] then
overridden_default_keymaps[mode] = {}
end
overridden_default_keymaps[mode][code] = {
cmd = map.callback or map.rhs,
opts = {
noremap = map.noremap == 1,
expr = map.expr == 1,
silent = map.silent == 1,
nowait = map.nowait == 1,
script = map.script == 1,
buffer = type(map.buffer) == "number" and map.buffer or nil,
},
}
end
end
end
end
end)
M.add_keymaps(maps)
end
function M.add_keymaps(maps)
assert(maps)
local function set_keymaps(map_table)
pass_keymap_tbl_to_fn(maps, function(map_table)
for mode, entries in pairs(map_table) do
for code, info in pairs(entries) do
vim.keymap.set(mode, code, info.cmd, info.opts)
end
end
end
if is_single_keymap_table(maps) then
set_keymaps(maps)
else
for _, map_table in pairs(maps) do
set_keymaps(map_table)
end
end
end)
end
function M.remove_keymaps(maps)
assert(maps)
local function del_keymaps(map_table)
pass_keymap_tbl_to_fn(maps, function(map_table)
for mode, entries in pairs(map_table) do
local overriden_mode = overridden_default_keymaps[mode]
for code, _ in pairs(entries) do
vim.keymap.del(mode, code)
if overriden_mode and overriden_mode[code] then
vim.keymap.set(mode, code, overriden_mode[code].cmd, overriden_mode[code].opts)
end
end
end
end
if is_single_keymap_table(maps) then
del_keymaps(maps)
else
for _, map_table in pairs(maps) do
del_keymaps(map_table)
end
end
end)
end
function M.is_buf_filetype(bufnr, filetype)