flutter/dev/tools/gen_defaults
2022-08-25 19:42:21 +00:00
..
bin Added support for M3 filled and filled tonal buttons. (#107382) 2022-08-25 11:36:03 -07:00
data Updated tokens to v0.101. (#105923) 2022-06-14 23:06:30 -07:00
lib Revert "Reland: Set IconButton.visualDensity default to VisualDensity.standard (#109432)" (#110119) 2022-08-23 15:41:03 -07:00
test Refactor gen_defaults to support multiple generated code blocks in the same file independently. (#107278) 2022-07-10 17:17:09 -07:00
pubspec.yaml [flutter_tools] unpin path_provider_android and roll (#110216) 2022-08-25 19:42:21 +00:00
README.md Refactor gen_defaults to support multiple generated code blocks in the same file independently. (#107278) 2022-07-10 17:17:09 -07:00

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.