Skip to content
No description, website, or topics provided.
JavaScript Python CSS
Branch: master
Clone or download
Latest commit c84da4a Jul 10, 2019
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
accessible Add accessible directory Jul 2, 2019
demos/accessible Add more files for the demo Jul 2, 2019
msg/js licenses Jul 2, 2019
CONTRIBUTING.md Initial commit Jul 1, 2019
LICENSE Add appendix to license Jul 2, 2019
README.md Update README.md Jul 9, 2019
blockly_accessible_compressed.js licenses Jul 2, 2019
blockly_accessible_uncompressed.js licenses Jul 2, 2019
blocks_compressed.js licenses Jul 2, 2019
build.py Add more files for the demo Jul 2, 2019

README.md

Blockly Experiments

Google's Blockly is a web-based, visual programming editor. Users can drag blocks together to build programs. All code is free and open source.

This repository holds experimental code: projects that didn't work out, but might still be interesting references.

The Blockly library is at github.com/google/blockly

Accessibility Demo

The code in this directory renders a version of the Blockly toolbox and workspace that is fully keyboard-navigable, and compatible with most screen readers. It is optimized for NVDA on Firefox.

Motivation

We built this demo in 2016/2017 and tested it with students at a nearby school for the blind. The goal was to build workflows that combined the best parts of block-based programming (such as high-level abstractions about available functions and a lack of syntax errors) with keyboard-only navigation.

Lessons Learned

We learned that:

  • Students are not necessarily comfortable with a screenreader
  • Completely removing the visualization makes it difficult for a sighted and blind user to work together

Using the demo

Open the demo page. This demo uses the compressed version of the code.

Building

To build the demo you will need the rest of Blockly. The accessible folder must be at the same level as Blockly's core folder. Run build.py -accessible to generate the compressed and uncompressed files.

You can’t perform that action at this time.