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local event = require('cmp.utils.event')
local autocmd = require('cmp.utils.autocmd')
local feedkeys = require('cmp.utils.feedkeys')
local window = require('cmp.utils.window')
local config = require('cmp.config')
local types = require('cmp.types')
local keymap = require('cmp.utils.keymap')
local misc = require('cmp.utils.misc')
local api = require('cmp.utils.api')
local SIDE_PADDING = 1
local DEFAULT_HEIGHT = 10 -- @see https://github.com/vim/vim/blob/master/src/popupmenu.c#L45
---@class cmp.CustomEntriesView
---@field private entries_win cmp.Window
---@field private offset number
---@field private active boolean
---@field private entries cmp.Entry[]
---@field private column_width any
---@field public event cmp.Event
local custom_entries_view = {}
custom_entries_view.ns = vim.api.nvim_create_namespace('cmp.view.custom_entries_view')
custom_entries_view.new = function()
local self = setmetatable({}, { __index = custom_entries_view })
self.entries_win = window.new()
self.entries_win:option('conceallevel', 2)
self.entries_win:option('concealcursor', 'n')
self.entries_win:option('cursorlineopt', 'line')
self.entries_win:option('foldenable', false)
self.entries_win:option('wrap', false)
self.entries_win:option('scrolloff', 0)
-- This is done so that strdisplaywidth calculations for lines in the
-- custom_entries_view window exactly match with what is really displayed,
-- see comment in cmp.Entry.get_view. Setting tabstop to 1 makes all tabs be
-- always rendered one column wide, which removes the unpredictability coming
-- from variable width of the tab character.
self.entries_win:buffer_option('tabstop', 1)
self.event = event.new()
self.offset = -1
self.active = false
self.entries = {}
self.bottom_up = false
autocmd.subscribe(
'CompleteChanged',
vim.schedule_wrap(function()
if self:visible() and vim.fn.pumvisible() == 1 then
self:close()
end
end)
)
vim.api.nvim_set_decoration_provider(custom_entries_view.ns, {
on_win = function(_, win, buf, top, bot)
if win ~= self.entries_win.win or buf ~= self.entries_win:get_buffer() then
return
end
local fields = config.get().formatting.fields
for i = top, bot do
local e = self.entries[i + 1]
if e then
local v = e:get_view(self.offset, buf)
local o = SIDE_PADDING
local a = 0
for _, field in ipairs(fields) do
if field == types.cmp.ItemField.Abbr then
a = o
end
vim.api.nvim_buf_set_extmark(buf, custom_entries_view.ns, i, o, {
end_line = i,
end_col = o + v[field].bytes,
hl_group = v[field].hl_group,
hl_mode = 'combine',
ephemeral = true,
})
o = o + v[field].bytes + (self.column_width[field] - v[field].width) + 1
end
for _, m in ipairs(e.matches or {}) do
vim.api.nvim_buf_set_extmark(buf, custom_entries_view.ns, i, a + m.word_match_start - 1, {
end_line = i,
end_col = a + m.word_match_end,
hl_group = m.fuzzy and 'CmpItemAbbrMatchFuzzy' or 'CmpItemAbbrMatch',
hl_mode = 'combine',
ephemeral = true,
})
end
end
end
end,
})
return self
end
custom_entries_view.ready = function()
return vim.fn.pumvisible() == 0
end
custom_entries_view.on_change = function(self)
self.active = false
end
custom_entries_view.is_direction_top_down = function(self)
local c = config.get()
if (c.view and c.view.entries and c.view.entries.selection_order) == 'top_down' then
return true
elseif c.view.entries == nil or c.view.entries.selection_order == nil then
return true
else
return not self.bottom_up
end
end
custom_entries_view.open = function(self, offset, entries)
local completion = config.get().window.completion
self.offset = offset
self.entries = {}
self.column_width = { abbr = 0, kind = 0, menu = 0 }
local entries_buf = self.entries_win:get_buffer()
local lines = {}
local dedup = {}
local preselect = 0
for _, e in ipairs(entries) do
local view = e:get_view(offset, entries_buf)
if view.dup == 1 or not dedup[e.completion_item.label] then
dedup[e.completion_item.label] = true
self.column_width.abbr = math.max(self.column_width.abbr, view.abbr.width)
self.column_width.kind = math.max(self.column_width.kind, view.kind.width)
self.column_width.menu = math.max(self.column_width.menu, view.menu.width)
table.insert(self.entries, e)
table.insert(lines, ' ')
if preselect == 0 and e.completion_item.preselect then
preselect = #self.entries
end
end
end
vim.api.nvim_buf_set_lines(entries_buf, 0, -1, false, lines)
vim.api.nvim_buf_set_option(entries_buf, 'modified', false)
local width = 0
width = width + 1
width = width + self.column_width.abbr + (self.column_width.kind > 0 and 1 or 0)
width = width + self.column_width.kind + (self.column_width.menu > 0 and 1 or 0)
width = width + self.column_width.menu + 1
local height = vim.api.nvim_get_option('pumheight')
height = height ~= 0 and height or #self.entries
height = math.min(height, #self.entries)
local pos = api.get_screen_cursor()
local cursor = api.get_cursor()
local delta = cursor[2] + 1 - self.offset
local row, col = pos[1], pos[2] - delta - 1
local border_info = window.get_border_info({ style = completion })
local border_offset_row = border_info.top + border_info.bottom
local border_offset_col = border_info.left + border_info.right
if math.floor(vim.o.lines * 0.5) <= row + border_offset_row and vim.o.lines - row - border_offset_row <= math.min(DEFAULT_HEIGHT, height) then
height = math.min(height, row - 1)
row = row - height - border_offset_row - 1
if row < 0 then
height = height + row
end
end
if math.floor(vim.o.columns * 0.5) <= col + border_offset_col and vim.o.columns - col - border_offset_col <= width then
width = math.min(width, vim.o.columns - 1)
col = vim.o.columns - width - border_offset_col - 1
if col < 0 then
width = width + col
end
end
if pos[1] > row then
self.bottom_up = true
else
self.bottom_up = false
end
if not self:is_direction_top_down() then
local n = #self.entries
for i = 1, math.floor(n / 2) do
self.entries[i], self.entries[n - i + 1] = self.entries[n - i + 1], self.entries[i]
end
if preselect ~= 0 then
preselect = #self.entries - preselect + 1
end
end
-- Apply window options (that might be changed) on the custom completion menu.
self.entries_win:option('winblend', vim.o.pumblend)
self.entries_win:option('winhighlight', completion.winhighlight)
self.entries_win:open({
relative = 'editor',
style = 'minimal',
row = math.max(0, row),
col = math.max(0, col),
width = width,
height = height,
border = completion.border,
zindex = completion.zindex or 1001,
})
-- always set cursor when starting. It will be adjusted on the call to _select
vim.api.nvim_win_set_cursor(self.entries_win.win, { 1, 0 })
if preselect > 0 and config.get().preselect == types.cmp.PreselectMode.Item then
self:_select(preselect, { behavior = types.cmp.SelectBehavior.Select })
elseif not string.match(config.get().completion.completeopt, 'noselect') then
if self:is_direction_top_down() then
self:_select(1, { behavior = types.cmp.SelectBehavior.Select })
else
self:_select(#self.entries - 1, { behavior = types.cmp.SelectBehavior.Select })
end
else
if self:is_direction_top_down() then
self:_select(0, { behavior = types.cmp.SelectBehavior.Select })
else
self:_select(#self.entries + 1, { behavior = types.cmp.SelectBehavior.Select })
end
end
end
custom_entries_view.close = function(self)
self.prefix = nil
self.offset = -1
self.active = false
self.entries = {}
self.entries_win:close()
self.bottom_up = false
end
custom_entries_view.abort = function(self)
if self.prefix then
self:_insert(self.prefix)
end
feedkeys.call('', 'n', function()
self:close()
end)
end
custom_entries_view.draw = function(self)
local info = vim.fn.getwininfo(self.entries_win.win)[1]
local topline = info.topline - 1
local botline = info.topline + info.height - 1
local texts = {}
local fields = config.get().formatting.fields
local entries_buf = self.entries_win:get_buffer()
for i = topline, botline - 1 do
local e = self.entries[i + 1]
if e then
local view = e:get_view(self.offset, entries_buf)
local text = {}
table.insert(text, string.rep(' ', SIDE_PADDING))
for _, field in ipairs(fields) do
table.insert(text, view[field].text)
table.insert(text, string.rep(' ', 1 + self.column_width[field] - view[field].width))
end
table.insert(text, string.rep(' ', SIDE_PADDING))
table.insert(texts, table.concat(text, ''))
end
end
vim.api.nvim_buf_set_lines(entries_buf, topline, botline, false, texts)
vim.api.nvim_buf_set_option(entries_buf, 'modified', false)
if api.is_cmdline_mode() then
vim.api.nvim_win_call(self.entries_win.win, function()
misc.redraw()
end)
end
end
custom_entries_view.visible = function(self)
return self.entries_win:visible()
end
custom_entries_view.info = function(self)
return self.entries_win:info()
end
custom_entries_view.select_next_item = function(self, option)
if self:visible() then
local cursor = vim.api.nvim_win_get_cursor(self.entries_win.win)[1]
if self:is_direction_top_down() then
cursor = cursor + 1
else
cursor = cursor - 1
end
if not self.entries_win:option('cursorline') then
cursor = (self:is_direction_top_down() and 1) or #self.entries
elseif #self.entries < cursor then
cursor = (not self:is_direction_top_down() and #self.entries + 1) or 0
end
self:_select(cursor, option)
end
end
custom_entries_view.select_prev_item = function(self, option)
if self:visible() then
local cursor = vim.api.nvim_win_get_cursor(self.entries_win.win)[1]
if self:is_direction_top_down() then
cursor = cursor - 1
else
cursor = cursor + 1
end
if not self.entries_win:option('cursorline') then
cursor = (self:is_direction_top_down() and #self.entries) or 1
elseif #self.entries < cursor then
cursor = (not self:is_direction_top_down() and 0) or #self.entries + 1
end
self:_select(cursor, option)
end
end
custom_entries_view.get_offset = function(self)
if self:visible() then
return self.offset
end
return nil
end
custom_entries_view.get_entries = function(self)
if self:visible() then
return self.entries
end
return {}
end
custom_entries_view.get_first_entry = function(self)
if self:visible() then
return (self:is_direction_top_down() and self.entries[1]) or self.entries[#self.entries]
end
end
custom_entries_view.get_selected_entry = function(self)
if self:visible() and self.entries_win:option('cursorline') then
return self.entries[vim.api.nvim_win_get_cursor(self.entries_win.win)[1]]
end
end
custom_entries_view.get_active_entry = function(self)
if self:visible() and self.active then
return self:get_selected_entry()
end
end
custom_entries_view._select = function(self, cursor, option)
local is_insert = (option.behavior or types.cmp.SelectBehavior.Insert) == types.cmp.SelectBehavior.Insert
if is_insert and not self.active then
self.prefix = string.sub(api.get_current_line(), self.offset, api.get_cursor()[2]) or ''
end
self.active = cursor > 0 and cursor <= #self.entries and is_insert
self.entries_win:option('cursorline', cursor > 0 and cursor <= #self.entries)
vim.api.nvim_win_set_cursor(self.entries_win.win, {
math.max(math.min(cursor, #self.entries), 1),
0,
})
if is_insert then
self:_insert(self.entries[cursor] and self.entries[cursor]:get_vim_item(self.offset).word or self.prefix)
end
self.entries_win:update()
self:draw()
self.event:emit('change')
end
custom_entries_view._insert = setmetatable({
pending = false,
}, {
__call = function(this, self, word)
word = word or ''
if api.is_cmdline_mode() then
local cursor = api.get_cursor()
vim.api.nvim_feedkeys(keymap.backspace(string.sub(api.get_current_line(), self.offset, cursor[2])) .. word, 'int', true)
else
if this.pending then
return
end
this.pending = true
local release = require('cmp').suspend()
feedkeys.call('', '', function()
local cursor = api.get_cursor()
local keys = {}
table.insert(keys, keymap.indentkeys())
table.insert(keys, keymap.backspace(string.sub(api.get_current_line(), self.offset, cursor[2])))
table.insert(keys, word)
table.insert(keys, keymap.indentkeys(vim.bo.indentkeys))
feedkeys.call(
table.concat(keys, ''),
'int',
vim.schedule_wrap(function()
this.pending = false
release()
end)
)
end)
end
end,
})
return custom_entries_view
|