Squashed 'mut/neovim/pack/plugins/start/blink.cmp/' content from commit 1cc3b1a

git-subtree-dir: mut/neovim/pack/plugins/start/blink.cmp
git-subtree-split: 1cc3b1a908fbcfd15451c4772759549724f38524

1 files changed, 160 insertions, 0 deletions

diff --git a/lua/blink/cmp/signature/window.lua b/lua/blink/cmp/signature/window.lua
new file mode 100644
index 0000000..59a60b0
--- /dev/null
+++ b/lua/blink/cmp/signature/window.lua
@@ -0,0 +1,160 @@
+--- @class blink.cmp.SignatureWindow
+--- @field win blink.cmp.Window
+--- @field context? blink.cmp.SignatureHelpContext
+---
+--- @field open_with_signature_help fun(context: blink.cmp.SignatureHelpContext, signature_help?: lsp.SignatureHelp)
+--- @field close fun()
+--- @field scroll_up fun(amount: number)
+--- @field scroll_down fun(amount: number)
+--- @field update_position fun()
+
+local config = require('blink.cmp.config').signature.window
+local sources = require('blink.cmp.sources.lib')
+local menu = require('blink.cmp.completion.windows.menu')
+
+local signature = {
+  win = require('blink.cmp.lib.window').new({
+    min_width = config.min_width,
+    max_width = config.max_width,
+    max_height = config.max_height,
+    border = config.border,
+    winblend = config.winblend,
+    winhighlight = config.winhighlight,
+    scrollbar = config.scrollbar,
+    wrap = true,
+    filetype = 'blink-cmp-signature',
+  }),
+  context = nil,
+}
+
+-- todo: deduplicate this
+menu.position_update_emitter:on(function() signature.update_position() end)
+vim.api.nvim_create_autocmd({ 'CursorMovedI', 'WinScrolled', 'WinResized' }, {
+  callback = function()
+    if signature.context then signature.update_position() end
+  end,
+})
+
+--- @param context blink.cmp.SignatureHelpContext
+--- @param signature_help lsp.SignatureHelp | nil
+function signature.open_with_signature_help(context, signature_help)
+  signature.context = context
+  -- check if there are any signatures in signature_help, since
+  -- convert_signature_help_to_markdown_lines errors with no signatures
+  if
+    signature_help == nil
+    or #signature_help.signatures == 0
+    or signature_help.signatures[(signature_help.activeSignature or 0) + 1] == nil
+  then
+    signature.win:close()
+    return
+  end
+
+  local active_signature = signature_help.signatures[(signature_help.activeSignature or 0) + 1]
+
+  local labels = vim.tbl_map(function(signature) return signature.label end, signature_help.signatures)
+
+  if signature.shown_signature ~= active_signature then
+    require('blink.cmp.lib.window.docs').render_detail_and_documentation({
+      bufnr = signature.win:get_buf(),
+      detail = labels,
+      documentation = active_signature.documentation,
+      max_width = config.max_width,
+      use_treesitter_highlighting = config.treesitter_highlighting,
+    })
+  end
+  signature.shown_signature = active_signature
+
+  -- highlight active parameter
+  local _, active_highlight = vim.lsp.util.convert_signature_help_to_markdown_lines(
+    signature_help,
+    vim.bo.filetype,
+    sources.get_signature_help_trigger_characters().trigger_characters
+  )
+  if active_highlight ~= nil then
+    -- TODO: nvim 0.11+ returns the start and end line which we should use
+    local start_region = vim.fn.has('nvim-0.11.0') == 1 and active_highlight[2] or active_highlight[1]
+    local end_region = vim.fn.has('nvim-0.11.0') == 1 and active_highlight[4] or active_highlight[2]
+
+    vim.api.nvim_buf_add_highlight(
+      signature.win:get_buf(),
+      require('blink.cmp.config').appearance.highlight_ns,
+      'BlinkCmpSignatureHelpActiveParameter',
+      0,
+      start_region,
+      end_region
+    )
+  end
+
+  signature.win:open()
+  signature.update_position()
+end
+
+function signature.close()
+  if not signature.win:is_open() then return end
+  signature.win:close()
+end
+
+function signature.scroll_up(amount)
+  local winnr = signature.win:get_win()
+  local top_line = math.max(1, vim.fn.line('w0', winnr) - 1)
+  local desired_line = math.max(1, top_line - amount)
+
+  vim.api.nvim_win_set_cursor(signature.win:get_win(), { desired_line, 0 })
+end
+
+function signature.scroll_down(amount)
+  local winnr = signature.win:get_win()
+  local line_count = vim.api.nvim_buf_line_count(signature.win:get_buf())
+  local bottom_line = math.max(1, vim.fn.line('w$', winnr) + 1)
+  local desired_line = math.min(line_count, bottom_line + amount)
+
+  vim.api.nvim_win_set_cursor(signature.win:get_win(), { desired_line, 0 })
+end
+
+function signature.update_position()
+  local win = signature.win
+  if not win:is_open() then return end
+  local winnr = win:get_win()
+
+  win:update_size()
+
+  local direction_priority = config.direction_priority
+
+  -- if the menu window is open, we want to place the signature window on the opposite side
+  local menu_win_config = menu.win:get_win() and vim.api.nvim_win_get_config(menu.win:get_win())
+  if menu.win:is_open() then
+    local cursor_screen_row = vim.fn.winline()
+    local menu_win_is_up = menu_win_config.row - cursor_screen_row < 0
+    direction_priority = menu_win_is_up and { 's' } or { 'n' }
+  end
+
+  local pos = win:get_vertical_direction_and_height(direction_priority)
+
+  -- couldn't find anywhere to place the window
+  if not pos then
+    win:close()
+    return
+  end
+
+  -- set height
+  vim.api.nvim_win_set_height(winnr, pos.height)
+  local height = win:get_height()
+
+  -- default to the user's preference but attempt to use the other options
+  if menu_win_config then
+    assert(menu_win_config.relative == 'win', 'The menu window must be relative to a window')
+    local cursor_screen_row = vim.fn.winline()
+    local menu_win_is_up = menu_win_config.row - cursor_screen_row < 0
+    vim.api.nvim_win_set_config(winnr, {
+      relative = menu_win_config.relative,
+      win = menu_win_config.win,
+      row = menu_win_is_up and menu_win_config.row + menu.win:get_height() + 1 or menu_win_config.row - height - 1,
+      col = menu_win_config.col,
+    })
+  else
+    vim.api.nvim_win_set_config(winnr, { relative = 'cursor', row = pos.direction == 's' and 1 or -height, col = 0 })
+  end
+end
+
+return signature