codemirror 0.4.5+5.41.0

  • Installing
  • Versions
  • 80


Build Status Dart strong mode

What is it?

A Dart wrapper around the CodeMirror text editor. From

CodeMirror is a versatile text editor implemented in JavaScript for the browser. It is specialized for editing code, and comes with a number of language modes and addons that implement more advanced editing functionality.

An example

Map options = {
  'mode': 'javascript',
  'theme': 'monokai'

CodeMirror editor = new CodeMirror.fromElement(
    querySelector('#textContainer'), options: options);
editor.getDoc().setValue(', 2, 3);');

See also our example/ directory.

How do I use it?

In your main html file, link to the style sheet:

<link href="packages/codemirror/codemirror.css" rel="stylesheet">

reference the CodeMirror JavaScript code:

<script src="packages/codemirror/codemirror.js"></script>

and, in your Dart code, import the library:

import 'package:codemirror/codemirror.dart';

What about modes? Addons?

This Dart package ships with several language modes built in. CodeMirror itself supports over 100 modes; the modes built into the Dart package include the usual suspects for web development - css, html, dart and javascript as well as a few others. In order to add additional modes, you'll need to reference the mode file from your html entry-point. So,

<script src="packages/codemirror/mode/lua.js"></script>

will bring in support for Lua.

Similarly with addons, we've included a few common ones, and have made the others available to import on a case-by-case basis. In order to use the active-line addon, import:

<script src="packages/codemirror/addon/selection/active-line.js"></script>

Be aware that many addons need additional configuration in order to enable then. This is generally done by passing values into the options of the CodeMirror constructor.

Some addons are exposed through the main Dart interface. Some are exposed via side-car Dart libraries available in the main package, and some have yet to be exposed. Pull requests welcome :)


By importing the codemirror.css file:

<link href="packages/codemirror/codemirror.css" rel="stylesheet">

You get access to all the CodeMirror themes. If you only want a few, or don't want to pay the network roundtrip cost to load all the themes, you can import only the ones you're interested in:

<link href="packages/codemirror/theme/monokai.css" rel="stylesheet">
<link href="packages/codemirror/theme/zenburn.css" rel="stylesheet">

Polymer transformer

The Polymer transfomer will inline our theme css references incorrectly. Currently, to use the codemirror package with Polymer, you'll need to add the following lines to your pubspec.yaml file.

- polymer:
    entry_points: web/foo_bar.html
      packages/codemirror/codemirror.css: false


This is not an official Google product.



  • fix v0.4.4 - update the Javascript codemirror resources


  • updated to CodeMirror 5.41.0
  • exposed more themes


  • increase the SDK dependency range


  • strong mode fixes
  • remove the use of deprecated constants


  • updated to CodeMirror 5.13.4
  • expose Doc.eachLine
  • expose Doc.addSelection
  • expose Doc.extendSelection
  • expose Doc.extendSelections
  • expose Doc.extendSelectionsBy
  • expose Doc.setExtending and Doc.getExtending


  • update the CodeMirror.addCommand to better support custom commands


  • updated to CodeMirror 5.8.0 (with improvements to the Dart mode)
  • Dart mode: improved syntax highlighting for triple-quoted strings
  • Dart mode: added syntax highlighting support for string interpolation


  • strong mode fixes
  • fix an issue with the async code completer


  • updated to CodeMirror 5.7.0
  • more strong mode fixes


  • made ddc (strong mode) compliant
  • fixed an issues returning the TextMarker positions of bookmarks


  • updated to CodeMirror 5.5.0
  • expose defineExtension and defineDocExtension


  • updated to CodeMirror 5.2.0
  • bug fix to Doc.getModeAt
  • added Doc.getModeName() and Doc.getModeNameAt() methods



  • expose the hints panel select, pick, and update events


  • expose the hints panel shown and close events (HintResults.registerOnShown)


  • patch in a fix for the code completion popup


  • upgrade to CodeMirror 5.1.0
  • expose more functionality from the hint addon


  • exposed execCommand


  • upgrade to CodeMirror 5.0.0
  • exposed CodeMirror.getInputField


  • upgrade to CodeMirror 4.12.0
  • added CodeMirror.findModeByFileName
  • expose more API (LineHandle, ...)


  • expose the hints (code completion) addon


  • include additional (optional) modes and addons


  • expose additional CodeMirror addons (comment editing, tag closing, element insertion)
  • expose additional CodeMirror APIs, esp. around Tokens and modes


  • added a missing hinter
  • removed all but a few modes from the defaults (codemirror.js went from 1.2MB to 520k)


  • added the ability to create TextMarkers (see Doc.markText and associated methods)
  • upgrade to CodeMirror 4.11.0



  • added posFromIndex and indexFromPos


  • added a CodeMirror.fromJsObject constructor
  • added CodeMirror.getLine


  • expose some gutter, widget, and marker manipulation methods
  • some support for the lint addon


  • included the addon/ directory in the package
  • concatenated likely addons to the codemirror.js script


  • upgrade to CodeMirror 4.8.0
  • expose CodeMirror.findModeByExtension, CodeMirror.findModeByMime, and CodeMirror.findModeByName


  • upgrade to CodeMirror 4.7.0


  • fixed a bug in Doc.onChange
  • fixed a bug in CodeMirror.getReadOnly
  • added Doc.getSelection


  • added a new constructor for Doc


  • add a CodeMirror.swapDoc method


  • fix for exception when listening for changes


  • republished to capture files omitted due to the .gitignore pub behavior


  • changed to consuming CodeMirror from bower
  • we now concatenate all modes into the main codemirror.js file


Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  codemirror: ^0.4.5+5.41.0

2. Install it

You can install packages from the command line:

with pub:

$ pub get

Alternatively, your editor might support pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:codemirror/codemirror.dart';
Version Uploaded Documentation Archive
0.4.5+5.41.0 Nov 15, 2018 Go to the documentation of codemirror 0.4.5+5.41.0 Download codemirror 0.4.5+5.41.0 archive
0.4.4+5.41.0 Nov 15, 2018 Go to the documentation of codemirror 0.4.4+5.41.0 Download codemirror 0.4.4+5.41.0 archive
0.4.3+5.13.4 Jul 26, 2018 Go to the documentation of codemirror 0.4.3+5.13.4 Download codemirror 0.4.3+5.13.4 archive
0.4.2+5.13.4 Jul 11, 2018 Go to the documentation of codemirror 0.4.2+5.13.4 Download codemirror 0.4.2+5.13.4 archive
0.4.1+5.13.4 Apr 9, 2016 Go to the documentation of codemirror 0.4.1+5.13.4 Download codemirror 0.4.1+5.13.4 archive
0.4.0+5.8.0 Dec 7, 2015 Go to the documentation of codemirror 0.4.0+5.8.0 Download codemirror 0.4.0+5.8.0 archive
0.3.2+5.8.0 Oct 21, 2015 Go to the documentation of codemirror 0.3.2+5.8.0 Download codemirror 0.3.2+5.8.0 archive
0.3.1+5.7.0 Oct 15, 2015 Go to the documentation of codemirror 0.3.1+5.7.0 Download codemirror 0.3.1+5.7.0 archive
0.3.0+5.7.0 Sep 30, 2015 Go to the documentation of codemirror 0.3.0+5.7.0 Download codemirror 0.3.0+5.7.0 archive
0.2.9+5.5.0 Sep 23, 2015 Go to the documentation of codemirror 0.2.9+5.5.0 Download codemirror 0.2.9+5.5.0 archive

All 40 versions...

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Learn more about scoring.

We analyzed this package on Nov 16, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0
  • pana: 0.12.6


Detected platforms: web

Primary library: package:codemirror/codemirror.dart with components: html, js.

Maintenance suggestions

The description is too short. (-20 points)

Add more detail about the package, what it does and what is its target use case. Try to write at least 60 characters.

Maintain an example.

None of the files in your example/ directory matches a known example patterns. Common file name patterns include: main.dart, example.dart or you could also use codemirror.dart. Packages with multiple examples should use example/


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.0.0 <3.0.0
Dev dependencies
grinder ^0.8.0
test ^1.0.0