feat: dedicated lualine component (#120)

.markdownlint.yml

@@ -9,3 +9,6 @@ MD033:
     - "details"
     - "img"
     - "summary"
+    - "table"
+    - "td"
+    - "tr"

README.md

@@ -854,6 +854,30 @@ A statusline component can be easily added to show whether a buffer is tagged.
 
 **[lualine.nvim](https://github.com/nvim-lualine/lualine.nvim) statusline**
 
+<table>
+<tr>
+<td> Snippet </td>
+<td> Screenshot </td>
+</tr>
+
+<tr>
+<td>
+
+```lua
+require("lualine").setup({
+    sections = {
+        lualine_b = { "grapple" }
+    }
+})
+```
+
+</td>
+<td><img width="300" alt="image" src="https://github.com/cbochs/grapple.nvim/assets/2467016/3b875b99-1a39-43f9-88c7-37814db86184"></td>
+</tr>
+
+<tr>
+<td>
+
 ```lua
 require("lualine").setup({
     sections = {
@@ -867,6 +891,11 @@ require("lualine").setup({
 })
 ```
 
+</td>
+<td><img width="300" alt="image" src="https://github.com/cbochs/grapple.nvim/assets/2467016/d10f4359-9463-4fb8-b131-f7867e4c8fcc"></td>
+</tr>
+</table>
+
 ## Grapple Types
 
 <details open>

lua/lualine/components/grapple.lua

@@ -0,0 +1,72 @@
+---@class grapple.lualine.component
+---@field options grapple.lualine.options
+local Component = require("lualine.component"):extend()
+
+---@class grapple.lualine.options
+local defaults = {
+    icon = "󰛢",
+    inactive = " %s ",
+    active = "[%s]",
+}
+
+---@class grapple.lualine.options
+function Component:init(opts)
+    opts = vim.tbl_deep_extend("keep", opts or {}, defaults)
+    Component.super:init(opts)
+end
+
+function Component:update_status()
+    if package.loaded["grapple"] == nil then
+        return
+    end
+
+    local ok, grapple = pcall(require, "grapple")
+    if not ok then
+        return
+    end
+
+    local tags = grapple.tags()
+    local current = grapple.find({ buffer = 0 })
+
+    local output = {}
+    for i, tag in ipairs(tags) do
+        local tag_str = tag.name and tag.name or i
+        local tag_fmt = self.options.inactive
+        if current and current.path == tag.path then
+            tag_fmt = self.options.active
+        end
+        table.insert(output, string.format(tag_fmt, tag_str))
+    end
+
+    return table.concat(output)
+end
+
+return Component
+
+--[[
+local lualine_require = require("lualine_require")
+local M = lualine_require.require("lualine.component"):extend()
+
+local hl = require("harpoon-lualine")
+
+local default_options = {
+    icon = "󰀱 ",
+    indicators = { "1", "2", "3", "4" },
+    active_indicators = { "[1]", "[2]", "[3]", "[4]" },
+}
+
+function M:init(options)
+    M.super.init(self, options)
+    self.options = vim.tbl_deep_extend("keep", self.options or {}, default_options)
+end
+
+function M:update_status()
+    local harpoon_loaded = package.loaded["harpoon"] ~= nil
+    if not harpoon_loaded then
+        return "Harpoon not loaded"
+    end
+
+    return hl.status(self.options)
+end
+
+return M--]]