1 files changed, 35 insertions, 0 deletions
diff --git a/lua/blink/cmp/completion/accept/preview.lua b/lua/blink/cmp/completion/accept/preview.lua
new file mode 100644
index 0000000..88b46e2
--- /dev/null
+++ b/lua/blink/cmp/completion/accept/preview.lua
@@ -0,0 +1,35 @@
+--- @param item blink.cmp.CompletionItem
+--- @return lsp.TextEdit undo_text_edit, integer[]? undo_cursor_pos The text edit to apply and the original cursor
+--- position to move to when undoing the preview,
+local function preview(item)
+  local text_edits_lib = require('blink.cmp.lib.text_edits')
+  local text_edit = text_edits_lib.get_from_item(item)
+
+  if item.insertTextFormat == vim.lsp.protocol.InsertTextFormat.Snippet then
+    local expanded_snippet = require('blink.cmp.sources.snippets.utils').safe_parse(text_edit.newText)
+    local snippet = expanded_snippet and tostring(expanded_snippet) or text_edit.newText
+    local get_prefix_before_brackets_and_quotes = require('blink.cmp.completion.accept.prefix')
+    text_edit.newText = get_prefix_before_brackets_and_quotes(snippet)
+  end
+
+  local undo_text_edit = text_edits_lib.get_undo_text_edit(text_edit)
+  local cursor_pos = {
+    text_edit.range.start.line + 1,
+    text_edit.range.start.character + #text_edit.newText,
+  }
+
+  text_edits_lib.apply({ text_edit })
+
+  local original_cursor = vim.api.nvim_win_get_cursor(0)
+  local cursor_moved = false
+
+  -- TODO: remove when text_edits_lib.apply begins setting cursor position
+  if vim.api.nvim_get_mode().mode ~= 'c' then
+    vim.api.nvim_win_set_cursor(0, cursor_pos)
+    cursor_moved = true
+  end
+
+  return undo_text_edit, cursor_moved and original_cursor or nil
+end
+
+return preview