4e7e4512b6
Fixes #122250. This PR is to make sure all the MaterialStateProperty defaults are able to correctly resolve different states. * When a widget is pressed, it is also hovered, so we need to put the `MaterialState.pressed` check before `MaterialState.hovered`. * When a widget is focused, the widget should still be able to be hovered, so we should check `MaterialState.hovered` before `MaterialState.focused`. * There are also cases like in _InputDecoratorDefaultsM3, the `MaterialState.disabled` should be checked before `MaterialState.error`. the order should be disabled, (error), pressed, hovered, focused.
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.