chore: refactor ui components (#1172)

1 files changed, 155 insertions, 0 deletions

diff --git a/lua/lspconfig/ui/lspinfo.lua b/lua/lspconfig/ui/lspinfo.lua
new file mode 100644
index 00000000..90839291
--- /dev/null
+++ b/lua/lspconfig/ui/lspinfo.lua
@@ -0,0 +1,155 @@
+local configs = require 'lspconfig/configs'
+local windows = require 'lspconfig/ui/windows'
+
+return function()
+  -- These options need to be cached before switching to the floating
+  -- buffer.
+  local buf_clients = vim.lsp.buf_get_clients()
+  local clients = vim.lsp.get_active_clients()
+  local buffer_filetype = vim.bo.filetype
+  local buffer_dir = vim.fn.expand '%:p:h'
+
+  local win_info = windows.percentage_range_window(0.8, 0.7)
+  local bufnr, win_id = win_info.bufnr, win_info.win_id
+
+  local buf_lines = {}
+
+  local buf_client_names = {}
+  for _, client in pairs(buf_clients) do
+    table.insert(buf_client_names, client.name)
+  end
+
+  local header = {
+    'Configured servers: ' .. table.concat(vim.tbl_keys(configs), ', '),
+    'Neovim logs at: ' .. (vim.lsp.get_log_path()),
+    '',
+    tostring(#vim.tbl_keys(buf_clients)) .. ' client(s) attached to this buffer: ' .. table.concat(
+      buf_client_names,
+      ', '
+    ),
+  }
+  vim.list_extend(buf_lines, header)
+
+  local function trim_whitespace(cmd)
+    local trimmed_cmd = {}
+    for _, str in pairs(cmd) do
+      table.insert(trimmed_cmd, str:match '^%s*(.*)')
+    end
+    return trimmed_cmd
+  end
+
+  local function remove_newlines(cmd)
+    cmd = trim_whitespace(cmd)
+    cmd = table.concat(cmd, ' ')
+    cmd = vim.split(cmd, '\n')
+    cmd = trim_whitespace(cmd)
+    cmd = table.concat(cmd, ' ')
+    return cmd
+  end
+
+  local function autostart_to_str(autostart)
+    local autostart_status = 'True'
+    if autostart == false then
+      autostart_status = 'Disabled'
+    end
+    return autostart_status
+  end
+  local indent = '  '
+  local function make_client_info(client)
+    local lines = {
+      '',
+      indent
+        .. 'Client: '
+        .. client.name
+        .. ' (id: '
+        .. tostring(client.id)
+        .. ' pid: '
+        .. tostring(client.rpc.pid)
+        .. ')',
+      indent .. '\troot:      ' .. client.workspaceFolders[1].name,
+      indent .. '\tfiletypes: ' .. table.concat(client.config.filetypes or {}, ', '),
+      indent .. '\tcmd:       ' .. remove_newlines(client.config.cmd),
+      indent .. '\tautostart: ' .. autostart_to_str(client._autostart),
+    }
+    if client.config.lspinfo then
+      local server_specific_info = client.config.lspinfo(client.config)
+      server_specific_info = vim.tbl_map(function(val)
+        return indent .. '\t' .. val
+      end, server_specific_info)
+      lines = vim.list_extend(lines, server_specific_info)
+    end
+
+    return lines
+  end
+
+  for _, client in pairs(buf_clients) do
+    local client_info = make_client_info(client)
+    vim.list_extend(buf_lines, client_info)
+  end
+
+  local active_section_header = {
+    '',
+    tostring(#clients) .. ' active client(s): ',
+  }
+  vim.list_extend(buf_lines, active_section_header)
+  for _, client in pairs(clients) do
+    local client_info = make_client_info(client)
+    vim.list_extend(buf_lines, client_info)
+  end
+  local matching_config_header = {
+    '',
+    'Clients that match the filetype ' .. buffer_filetype .. ':',
+  }
+  local cmd_not_found_msg = 'False. Please check your path and ensure the server is installed'
+  vim.list_extend(buf_lines, matching_config_header)
+  for _, config in pairs(configs) do
+    local cmd_is_executable, cmd
+    if config.cmd then
+      cmd = remove_newlines(config.cmd)
+      if vim.fn.executable(config.cmd[1]) == 1 then
+        cmd_is_executable = 'True'
+      else
+        cmd_is_executable = cmd_not_found_msg
+      end
+    else
+      cmd = 'cmd not defined'
+      cmd_is_executable = cmd
+    end
+    if config.filetypes then
+      for _, filetype_match in pairs(config.filetypes) do
+        if buffer_filetype == filetype_match then
+          local matching_config_info = {
+            indent .. '',
+            indent .. 'Config: ' .. config.name,
+            indent .. '\tcmd:               ' .. cmd,
+            indent .. '\tcmd is executable: ' .. cmd_is_executable,
+            indent .. '\tidentified root:   ' .. (config.get_root_dir(buffer_dir) or 'None'),
+            indent .. '\tautostart:         ' .. autostart_to_str(config._autostart),
+            indent .. '\tcustom handlers:   ' .. table.concat(vim.tbl_keys(config.handlers), ', '),
+          }
+          vim.list_extend(buf_lines, matching_config_info)
+        end
+      end
+    else
+      local matching_config_info = {
+        '',
+        'Config: ' .. config.name,
+        '\tfiletype: ' .. 'No filetypes defined, please define filetypes in setup().',
+      }
+      vim.list_extend(buf_lines, matching_config_info)
+    end
+  end
+  buf_lines = vim.lsp.util._trim(buf_lines, {})
+  vim.api.nvim_buf_set_lines(bufnr, 0, -1, true, buf_lines)
+  vim.api.nvim_buf_set_option(bufnr, 'modifiable', false)
+  vim.api.nvim_buf_set_option(bufnr, 'filetype', 'lspinfo')
+  local configs_pattern = '\\%(' .. table.concat(vim.tbl_keys(configs), '\\|') .. '\\)'
+  vim.cmd('syntax match Title /\\%(Client\\|Config\\):.*\\zs' .. configs_pattern .. '/')
+  vim.cmd('syntax match Identifier /filetypes:.*\\zs\\<' .. buffer_filetype .. '\\>/')
+  vim.fn.matchadd(
+    'Error',
+    'No filetypes defined, please define filetypes in setup().\\|' .. 'cmd not defined\\|' .. cmd_not_found_msg
+  )
+  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<esc>', '<cmd>bd<CR>', { noremap = true })
+  vim.lsp.util.close_preview_autocmd({ 'BufHidden', 'BufLeave' }, win_id)
+end