flutter/dev/tools/gen_defaults
Kate Lovett 8b32ac7a51
Revert "Update SnackBar to support Material 3" (#116199)
* Revert "Update SnackBar to support Material 3 (#115750)"

This reverts commit d58855c49986d46588b0e2b1bf2f8b2bb97e3932.

* Kick ci.yaml

Co-authored-by: Jenn Magder <magder@google.com>
2022-11-29 19:11:43 +00:00
..
2022-11-27 22:08:48 -08:00

Token Defaults Generator

Script that generates widget component theme data defaults based on the Material Token database. These tokens were extracted into a JSON file from an internal Google database.

Usage

Run this program from the root of the git repository:

dart dev/tools/gen_defaults/bin/gen_defaults.dart

Templates

There is a template file for every component that needs defaults from the token database. These templates are implemented as subclasses of TokenTemplate. This base class provides some utilities and a structure for adding a new block of generated code to the bottom of a given file.

Templates need to override the generate method to provide the generated code block as a string. The tokens are represented as a Map<String, dynamic> that is loaded from data/material-tokens.json. Templates can look up whatever properties are needed in this structure to provide the properties needed for the component.

See lib/fab_template.dart for an example that generates defaults for the Floating Action Button.