feat: added better fold ui

lua/lazyvim/plugins/extras/ui/fold.lua

@@ -0,0 +1,116 @@
+return {
+  {
+    "lewis6991/gitsigns.nvim",
+    optional = true,
+    opts = {
+      signs = {
+        add = { text = "┃" },
+        change = { text = "┃" },
+        delete = { text = "󱈸" },
+        topdelete = { text = "󱈸" },
+        changedelete = { text = "┃" },
+        untracked = { text = "┇" },
+      },
+      signcolumn = true,
+      numhl = true,
+    },
+  },
+  {
+    "neovim/nvim-lspconfig",
+    optional = true,
+    init = function()
+      local keys = require("lazyvim.plugins.lsp.keymaps").get()
+      keys[#keys + 1] = { "K", false }
+    end,
+  },
+  { -- better statuscolumn
+    "luukvbaal/statuscol.nvim",
+    event = { "BufRead", "BufNewFile" },
+    opts = function()
+      local builtin = require("statuscol.builtin")
+      return {
+        ft_ignore = { "neo-tree", "neo-tree-popup", "alpha", "lazy", "mason" },
+        segments = {
+          { text = { builtin.lnumfunc }, click = "v:lua.ScLa" },
+          {
+            sign = { name = { "Diagnostic*" }, text = { ".*" }, maxwidth = 1, colwidth = 1, auto = true },
+            click = "v:lua.ScSa",
+          },
+          { text = { builtin.foldfunc, " " }, click = "v:lua.ScFa" },
+        },
+      }
+    end,
+    init = function() end,
+    config = function(_, opts)
+      require("statuscol").setup(opts)
+    end,
+  },
+  { -- better fold
+    "kevinhwang91/nvim-ufo",
+    event = { "BufRead", "BufNewFile" },
+    dependencies = { "kevinhwang91/promise-async" },
+    init = function()
+      vim.o.foldcolumn = "1"
+      vim.o.foldlevel = 99
+      vim.o.foldlevelstart = 99
+      vim.o.foldenable = true
+    end,
+    opts = function()
+      local handler = function(virtText, lnum, endLnum, width, truncate)
+        local newVirtText = {}
+        local suffix = (" ... 󰁂 %d "):format(endLnum - lnum)
+        local sufWidth = vim.fn.strdisplaywidth(suffix)
+        local targetWidth = width - sufWidth
+        local curWidth = 0
+        for _, chunk in ipairs(virtText) do
+          local chunkText = chunk[1]
+          local chunkWidth = vim.fn.strdisplaywidth(chunkText)
+          if targetWidth > curWidth + chunkWidth then
+            table.insert(newVirtText, chunk)
+          else
+            chunkText = truncate(chunkText, targetWidth - curWidth)
+            local hlGroup = chunk[2]
+            table.insert(newVirtText, { chunkText, hlGroup })
+            chunkWidth = vim.fn.strdisplaywidth(chunkText)
+            -- str width returned from truncate() may less than 2nd argument, need padding
+            if curWidth + chunkWidth < targetWidth then
+              suffix = suffix .. (" "):rep(targetWidth - curWidth - chunkWidth)
+            end
+            break
+          end
+          curWidth = curWidth + chunkWidth
+        end
+        table.insert(newVirtText, { suffix, "MoreMsg" })
+        return newVirtText
+      end
+
+      return {
+        fold_virt_text_handler = handler,
+        provider_selector = function()
+          return { "treesitter", "indent" }
+        end,
+        open_fold_hl_timeout = 400,
+        close_fold_kinds = { "imports", "comment" },
+        preview = {
+          win_config = { border = { "", "─", "", "", "", "─", "", "" }, winblend = 0 },
+          mappings = {
+            scrollU = "<C-b>",
+            scrollD = "<C-f>",
+            jumpTop = "[",
+            jumpBot = "]",
+          },
+        },
+      }
+    end,
+    config = function(_, opts)
+      require("ufo").setup(opts)
+
+      local map = require("lazyvim.util").safe_keymap_set
+      map("n", "K", function()
+        if not require("ufo").peekFoldedLinesUnderCursor() then
+          vim.lsp.buf.hover()
+        end
+      end, { desc = "Peek folded lines under cursor or hover" })
+    end,
+  },
+}