/firepad

Collaborative Text Editor Powered by Firebase

Primary LanguageJavaScriptOtherNOASSERTION

Visit firepad.io for demo, examples, and embedding docs!

Read on if you'd like to contribute to Firepad.

Setting Up Your Environment

Firepad uses grunt to automate some build tasks (generating / minifying firepad.js, etc.). So before you get started, you'll need node.js installed. Then you can simply clone the repo, install the necessary node modules, and run grunt:

git clone https://github.com/firebase/firepad.git
cd firepad
npm install
sudo npm install -g grunt-cli
grunt

Source Code

To get started, here are some highlights of the directory structure and notable source files:

  • build/ - output directory for all files generated by grunt (firepad.js, firepad-min.js, firepad.zip, etc.).
  • examples - examples of embedding Firepad.
  • lib/
    • firepad.js - Entry point for Firepad.
    • text-operation.js, client.js - Heart of the Operation Transformation implementation. Based on ot.js but extended to allow arbitrary attributes on text (for representing rich-text).
    • annotation-list.js - A data model for representing annotations on text (i.e. spans of text with a particular set of attributes).
    • rich-text-codemirror.js - Uses AnnotationList to track annotations on the text and maintain the appropriate set of markers on a CodeMirror instance.
    • firebase-adapter.js - handles integration with Firebase (appending operations, triggering retries, presence, etc.).
  • test/ - Jasmine tests for Firepad (many of these were borrowed from ot.js).