getDefaultMaxLengthEnforcement method Null safety
- [TargetPlatform? platform]
Returns a MaxLengthEnforcement that follows the specified platform's
convention.
Platform specific behaviors
Different platforms follow different behaviors by default, according to their native behavior.
- Android, Windows: MaxLengthEnforcement.enforced. The native behavior of these platforms is enforced. The composing will be handled by the IME while users are entering CJK characters.
- iOS: MaxLengthEnforcement.truncateAfterCompositionEnds. iOS has no default behavior and it requires users implement the behavior themselves. Allow the composition to exceed to avoid breaking CJK input.
- Web, macOS, linux, fuchsia: MaxLengthEnforcement.truncateAfterCompositionEnds. These platforms allow the composition to exceed by default.
Implementation
static MaxLengthEnforcement getDefaultMaxLengthEnforcement([
TargetPlatform? platform,
]) {
if (kIsWeb) {
return MaxLengthEnforcement.truncateAfterCompositionEnds;
} else {
switch (platform ?? defaultTargetPlatform) {
case TargetPlatform.android:
case TargetPlatform.windows:
return MaxLengthEnforcement.enforced;
case TargetPlatform.iOS:
case TargetPlatform.macOS:
case TargetPlatform.linux:
case TargetPlatform.fuchsia:
return MaxLengthEnforcement.truncateAfterCompositionEnds;
}
}
}