feat: Add rename symbol support

lua/symbols-outline.lua

@@ -136,6 +136,10 @@ local function setup_keymaps(bufnr)
     vim.api.nvim_buf_set_keymap(bufnr, "n", "<C-space>",
                                 ":lua require('symbols-outline.hover').show_hover()<Cr>",
                                 {})
+    -- rename symbol
+    vim.api.nvim_buf_set_keymap(bufnr, "n", "r",
+                                ":lua require('symbols-outline.rename').rename()<Cr>",
+                                {})
     -- close outline when escape is pressed
     vim.api.nvim_buf_set_keymap(bufnr, "n", "<Esc>", ":bw!<Cr>", {})
 end

lua/symbols-outline/rename.lua

@@ -0,0 +1,37 @@
+local vim = vim
+
+local state = require('symbols-outline').state
+
+local M = {}
+
+local function get_rename_params(node, winnr)
+    local bufnr = vim.api.nvim_win_get_buf(winnr)
+    local fn = "file://" .. vim.api.nvim_buf_get_name(bufnr)
+
+    return {
+        textDocument = {uri = fn},
+        position = {line = node.line, character = node.character},
+        bufnr = bufnr
+    }
+end
+
+function M.rename()
+    local current_line = vim.api.nvim_win_get_cursor(state.outline_win)[1]
+    local node = state.flattened_outline_items[current_line]
+
+    local params = get_rename_params(node, state.code_win)
+
+    local new_name = vim.fn.input("New Name: ", node.name)
+    if not new_name or new_name == "" or new_name == node.name then return end
+
+    params.newName = new_name
+
+    vim.lsp.buf_request(params.bufnr, "textDocument/rename", params,
+                        function(_, _, result)
+        if result ~= nil then
+            vim.lsp.util.apply_workspace_edit(result)
+        end
+    end)
+end
+
+return M