Vim commands for Flutter, including hot-reload-on-save and more.

Usage documentation can be found both in this README, as well as via calling :h flutter.

vim-flutter is a Vimscript-only plugin, and makes heavy use of Vim8's async jobs. It can be installed with a package manager like vim-plug , for example.

Though this package doesn't depend on it, having dart-vim-plugin available is recommended, for a better experience.

You may also consider combining package:dart_language_server with a Language Server Protocol client, like ale.

Plug 'dart-lang/dart-vim-plugin'
Plug 'thosakwe/vim-flutter'

" Run :PlugInstall to install the plugin.

Ultimately, installation is up to you.

• g:flutter_command - The Flutter executable path/name; defaults to 'flutter'.
• g:flutter_hot_reload_on_save - Whether to auto hot-reload when dart files are saved; defaults to 1.
• g:flutter_hot_restart_on_save - Whether to auto hot-restart when dart files are saved; defaults to 0.
• g:flutter_show_log_on_run - Automatically open __Flutter_Output__ when starting flutter using :FlutterRun; it can have one of the following values:
  • "split" or 1: Open the log in a split, this is the default.
  • "tab": Open the log in a new tab.
  • "hidden" or 0: Do not open the log by default, can be opened later with FlutterSplit etc.
• g:flutter_show_log_on_attach - Identical to g:flutter_show_log_on_run but affecting the :FlutterAttach command.
• g:flutter_split_height - Initial height of the window opened by :FlutterSplit (or :FlutterRun and :FlutterAttach, when g:flutter_show_log_on_run is set to "split"); defaults to standard vim behavior, which is splitting the window in half.
• g:flutter_autoscroll - Autoscroll the flutter log when 1, defaults to 0.
• g:flutter_use_last_run_option - When set to 1 then :FlutterRun will use the arguments from the previous call when no arguments are specified.
• g:flutter_use_last_attach_option - Identical to g:flutter_use_last_run_option but affecting the :FlutterAttach command.
• g:flutter_close_on_quit - Whether to close all __Flutter_Output__ windows (splits and tabs) on :FlutterQuit; defaults to 0.

• :FlutterRun <args> - calls flutter run <args>
• :FlutterAttach <args> - calls flutter attach <args>
• :FlutterHotReload - triggers a hot reload on the current Flutter process
• :FlutterHotRestart - triggers a hot restart on the current Flutter process
• :FlutterScreenshot - takes a screenshot of the current Flutter application and saves it in the project directory
• :FlutterQuit - quits the current Flutter process
• :FlutterDevices - opens a new buffer, and writes the output of flutter devices to it
• :FlutterSplit - opens Flutter output in a horizontal split
• :FlutterEmulators - Executes a flutter emulators process.
• :FlutterEmulatorsLaunch - Executes a flutter emulators --launch process, with any provided arguments.
• :FlutterVisualDebug - Toggles visual debugging in the running Flutter process.

The following are self-explanatory:

• :FlutterVSplit
• :FlutterTab

If you are using a GUI Vim Variant, you can add a Flutter menu by calling call FlutterMenu().

A convenient feature to have when working with Flutter is to automatically hot-reload an app once a file is saved. By default, whenever a dart file is saved, if and only if a Flutter process is running, it will be hot-reloaded.

You can disable this by setting g:hot_reload_on_save=0, before vim-flutter is loaded.

Plug 'thosakwe/vim-flutter'
call plug#end()

" Enable Flutter menu
call FlutterMenu()

" Some of these key choices were arbitrary;
" it's just an example.
nnoremap <leader>fa :FlutterRun<cr>
nnoremap <leader>fq :FlutterQuit<cr>
nnoremap <leader>fr :FlutterHotReload<cr>
nnoremap <leader>fR :FlutterHotRestart<cr>
nnoremap <leader>fD :FlutterVisualDebug<cr>