feat: Update outline on rename symbol

Also added ability to show provider status from code_action and
rename_symbol

lua/outline/providers/init.lua

@@ -27,9 +27,13 @@ end
 ---@param args any[]
 function M.action(sidebar, method, args)
   if not sidebar.provider or not sidebar.provider[method] then
+    require('outline.utils').echo('No supported providers to perform this action.')
     return
   end
-  return sidebar.provider[method](unpack(args))
+  local ok = sidebar.provider[method](unpack(args))
+  if not ok then
+    require('outline.utils').echo('The provider could not perform this action successfully.')
+  end
 end
 
 return M

lua/outline/providers/nvim-lsp.lua

@@ -15,7 +15,7 @@ function M.get_status()
   return { 'client: ' .. M.client.name }
 end
 
-function M.hover_info(bufnr, params, on_info)
+local function get_appropriate_client(bufnr, capability)
   local clients = vim.lsp.get_active_clients({ bufnr = bufnr })
   local use_client
 
@@ -23,7 +23,7 @@ function M.hover_info(bufnr, params, on_info)
     if config.is_client_blacklisted(client) then
       goto continue
     else
-      if client.server_capabilities.hoverProvider then
+      if client.server_capabilities[capability] then
         use_client = client
         M.client = client
         break
@@ -31,39 +31,16 @@ function M.hover_info(bufnr, params, on_info)
     end
     ::continue::
   end
-
-  if not use_client then
-    on_info(nil, {
-      contents = {
-        kind = 'markdown',
-        content = { 'No extra information availaible' },
-      },
-    })
-    return
-  end
-
-  use_client.request('textDocument/hover', params, on_info, bufnr)
+  return use_client
 end
 
 ---@return boolean
 function M.supports_buffer(bufnr)
-  local clients = vim.lsp.get_active_clients({ bufnr = bufnr })
-  local ret = false
-
-  for _, client in ipairs(clients) do
-    if config.is_client_blacklisted(client) then
-      goto continue
-    else
-      if client.server_capabilities.documentSymbolProvider then
-        M.client = client
-        ret = true
-        break
-      end
-    end
-    ::continue::
+  local client = get_appropriate_client(bufnr, 'documentSymbolProvider')
+  if not client then
+    return false
   end
-
-  return ret
+  return true
 end
 
 ---@param response outline.ProviderSymbol[]
@@ -95,17 +72,74 @@ end
 -- No good way to update outline when LSP action complete for now
 
 ---@param sidebar outline.Sidebar
+---@return boolean success
 function M.code_actions(sidebar)
+  local client = get_appropriate_client(sidebar.code.buf, 'codeActionProvider')
+  if not client then
+    return false
+  end
+  -- NOTE: Unfortunately the code_action function provided by neovim does a
+  -- lot, yet it doesn't let us filter clients. Since handling of code_actions
+  -- is beyond the scope of outline.nvim itself, we will not respect
+  -- blacklist_clients for code actions for now. Code actions feature would not
+  -- actually be included if I were to write this plugin from scratch. However
+  -- we still keep it because many people are moving here from
+  -- symbols-outline.nvim, which happened to implement this feature.
   sidebar:wrap_goto_location(function()
     vim.lsp.buf.code_action()
   end)
+  return true
 end
 
+---Synchronously request rename from LSP
 ---@param sidebar outline.Sidebar
+---@return boolean success
 function M.rename_symbol(sidebar)
-  sidebar:wrap_goto_location(function()
-    vim.lsp.buf.rename()
-  end)
+  local client = get_appropriate_client(sidebar.code.buf, 'renameProvider')
+  if not client then
+    return false
+  end
+
+  local node = sidebar:_current_node()
+
+  -- Using fn.input so it's synchronous
+  local new_name = vim.fn.input({ prompt = 'New Name: ', default = node.name })
+  if not new_name or new_name == '' or new_name == node.name then
+    return true
+  end
+
+  local params = {
+    textDocument = { uri = 'file://' .. vim.api.nvim_buf_get_name(sidebar.code.buf) },
+    position = { line = node.line, character = node.character },
+    bufnr = sidebar.code.buf,
+    newName = new_name,
+  }
+  local timeout = 2000
+  local status, err = client.request_sync('textDocument/rename', params, timeout, sidebar.code.buf)
+  if status == nil or status.err or err or status.result == nil then
+    return false
+  end
+
+  vim.lsp.util.apply_workspace_edit(status.result, client.offset_encoding)
+  node.name = new_name
+  sidebar:_update_lines(false)
+  return true
+end
+
+function M.hover_info(bufnr, params, on_info)
+  local use_client = get_appropriate_client(bufnr, 'hoverProvider')
+
+  if not use_client then
+    on_info(nil, {
+      contents = {
+        kind = 'markdown',
+        content = { 'No extra information availaible' },
+      },
+    })
+    return
+  end
+
+  use_client.request('textDocument/hover', params, on_info, bufnr)
 end
 
 return M