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SpaceVim/bundle/nvim-cmp/lua/cmp/utils/window.lua
2022-01-01 22:13:13 +08:00

262 lines
7.3 KiB
Lua

local cache = require('cmp.utils.cache')
local misc = require('cmp.utils.misc')
local buffer = require('cmp.utils.buffer')
local api = require('cmp.utils.api')
---@class cmp.WindowStyle
---@field public relative string
---@field public row number
---@field public col number
---@field public width number
---@field public height number
---@field public zindex number|nil
---@class cmp.Window
---@field public name string
---@field public win number|nil
---@field public swin1 number|nil
---@field public swin2 number|nil
---@field public style cmp.WindowStyle
---@field public opt table<string, any>
---@field public cache cmp.Cache
local window = {}
---new
---@return cmp.Window
window.new = function()
local self = setmetatable({}, { __index = window })
self.name = misc.id('cmp.utils.window.new')
self.win = nil
self.swin1 = nil
self.swin2 = nil
self.style = {}
self.cache = cache.new()
self.opt = {}
return self
end
---Set window option.
---NOTE: If the window already visible, immediately applied to it.
---@param key string
---@param value any
window.option = function(self, key, value)
if vim.fn.exists('+' .. key) == 0 then
return
end
if value == nil then
return self.opt[key]
end
self.opt[key] = value
if self:visible() then
vim.api.nvim_win_set_option(self.win, key, value)
end
end
---Set style.
---@param style cmp.WindowStyle
window.set_style = function(self, style)
if vim.o.columns and vim.o.columns <= style.col + style.width then
style.width = vim.o.columns - style.col - 1
end
if vim.o.lines and vim.o.lines <= style.row + style.height then
style.height = vim.o.lines - style.row - 1
end
self.style = style
self.style.zindex = self.style.zindex or 1
end
---Return buffer id.
---@return number
window.get_buffer = function(self)
return buffer.ensure(self.name)
end
---Open window
---@param style cmp.WindowStyle
window.open = function(self, style)
if style then
self:set_style(style)
end
if self.style.width < 1 or self.style.height < 1 then
return
end
if self.win and vim.api.nvim_win_is_valid(self.win) then
vim.api.nvim_win_set_config(self.win, self.style)
else
local s = misc.copy(self.style)
s.noautocmd = true
self.win = vim.api.nvim_open_win(buffer.ensure(self.name), false, s)
for k, v in pairs(self.opt) do
vim.api.nvim_win_set_option(self.win, k, v)
end
end
self:update()
end
---Update
window.update = function(self)
if self:has_scrollbar() then
local total = self:get_content_height()
local info = self:info()
local bar_height = math.ceil(info.height * (info.height / total))
local bar_offset = math.min(info.height - bar_height, math.floor(info.height * (vim.fn.getwininfo(self.win)[1].topline / total)))
local style1 = {}
style1.relative = 'editor'
style1.style = 'minimal'
style1.width = 1
style1.height = info.height
style1.row = info.row
style1.col = info.col + info.width - (info.has_scrollbar and 1 or 0)
style1.zindex = (self.style.zindex and (self.style.zindex + 1) or 1)
if self.swin1 and vim.api.nvim_win_is_valid(self.swin1) then
vim.api.nvim_win_set_config(self.swin1, style1)
else
style1.noautocmd = true
self.swin1 = vim.api.nvim_open_win(buffer.ensure(self.name .. 'sbuf1'), false, style1)
vim.api.nvim_win_set_option(self.swin1, 'winhighlight', 'EndOfBuffer:PmenuSbar,Normal:PmenuSbar,NormalNC:PmenuSbar,NormalFloat:PmenuSbar')
end
local style2 = {}
style2.relative = 'editor'
style2.style = 'minimal'
style2.width = 1
style2.height = bar_height
style2.row = info.row + bar_offset
style2.col = info.col + info.width - (info.has_scrollbar and 1 or 0)
style2.zindex = (self.style.zindex and (self.style.zindex + 2) or 2)
if self.swin2 and vim.api.nvim_win_is_valid(self.swin2) then
vim.api.nvim_win_set_config(self.swin2, style2)
else
style2.noautocmd = true
self.swin2 = vim.api.nvim_open_win(buffer.ensure(self.name .. 'sbuf2'), false, style2)
vim.api.nvim_win_set_option(self.swin2, 'winhighlight', 'EndOfBuffer:PmenuThumb,Normal:PmenuThumb,NormalNC:PmenuThumb,NormalFloat:PmenuThumb')
end
else
if self.swin1 and vim.api.nvim_win_is_valid(self.swin1) then
vim.api.nvim_win_hide(self.swin1)
self.swin1 = nil
end
if self.swin2 and vim.api.nvim_win_is_valid(self.swin2) then
vim.api.nvim_win_hide(self.swin2)
self.swin2 = nil
end
end
-- In cmdline, vim does not redraw automatically.
if api.is_cmdline_mode() then
vim.api.nvim_win_call(self.win, function()
vim.cmd([[redraw]])
end)
end
end
---Close window
window.close = function(self)
if self.win and vim.api.nvim_win_is_valid(self.win) then
if self.win and vim.api.nvim_win_is_valid(self.win) then
vim.api.nvim_win_hide(self.win)
self.win = nil
end
if self.swin1 and vim.api.nvim_win_is_valid(self.swin1) then
vim.api.nvim_win_hide(self.swin1)
self.swin1 = nil
end
if self.swin2 and vim.api.nvim_win_is_valid(self.swin2) then
vim.api.nvim_win_hide(self.swin2)
self.swin2 = nil
end
end
end
---Return the window is visible or not.
window.visible = function(self)
return self.win and vim.api.nvim_win_is_valid(self.win)
end
---Return the scrollbar will shown or not.
window.has_scrollbar = function(self)
return (self.style.height or 0) < self:get_content_height()
end
---Return win info.
window.info = function(self)
local border_width = self:get_border_width()
local has_scrollbar = self:has_scrollbar()
return {
row = self.style.row,
col = self.style.col,
width = self.style.width + border_width + (has_scrollbar and 1 or 0),
height = self.style.height,
border_width = border_width,
has_scrollbar = has_scrollbar,
}
end
---Get border width
---@return number
window.get_border_width = function(self)
local border = self.style.border
if type(border) == 'table' then
local new_border = {}
while #new_border < 8 do
for _, b in ipairs(border) do
table.insert(new_border, b)
end
end
border = new_border
end
local w = 0
if border then
if type(border) == 'string' then
if border == 'single' then
w = 2
elseif border == 'solid' then
w = 2
elseif border == 'double' then
w = 2
elseif border == 'rounded' then
w = 2
elseif border == 'shadow' then
w = 1
end
elseif type(border) == 'table' then
local b4 = type(border[4]) == 'table' and border[4][1] or border[4]
if #b4 > 0 then
w = w + 1
end
local b8 = type(border[8]) == 'table' and border[8][1] or border[8]
if #b8 > 0 then
w = w + 1
end
end
end
return w
end
---Get scroll height.
---@return number
window.get_content_height = function(self)
if not self:option('wrap') then
return vim.api.nvim_buf_line_count(self:get_buffer())
end
return self.cache:ensure({
'get_content_height',
self.style.width,
self:get_buffer(),
vim.api.nvim_buf_get_changedtick(self:get_buffer()),
}, function()
local height = 0
for _, text in ipairs(vim.api.nvim_buf_get_lines(self:get_buffer(), 0, -1, false)) do
height = height + math.ceil(math.max(1, vim.str_utfindex(text)) / self.style.width)
end
return height
end)
end
return window