chain-studio/lib/widgets/chain_status_dot.dart
flemming-it 891acd2ba2
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refactor: rename internal Fai* design system + fai_ helpers to chain
The Studio design system, widgets and helpers carried a Fai* / fai_
prefix (FaiSpace, FaiColors, FaiTheme, FaiLog, 17 fai_*.dart files, the
faiBinary* l10n keys). Studio is the Ch∆In product, so rename them to
Chain* / chain_ — carefully preserving English fail/failure/failed.
Also fix stale references: the 'fai' binary in l10n strings -> 'chain',
FAI_* env vars (FAI_BIN/DATA_DIR/MODULES_DIR/TODAY/BOOTSTRAP_TOKEN) ->
CHAIN_*, fai_platform -> fai_chain, fai_hub -> chain_hub. Vendor
security-hook tooling (FAI_BANNED_TERMS_FILE) + the .fai bundle ext left.
flutter analyze + test: clean (20 passed).

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>
2026-06-16 17:53:17 +02:00

95 lines
2.4 KiB
Dart

// ChainStatusDot — small pulsing dot used as a "live" indicator.
// Goes still when [pulsing] is false, breathes gently when true.
import 'package:flutter/material.dart';
import '../theme/tokens.dart';
class ChainStatusDot extends StatefulWidget {
final Color color;
/// When true, the dot fades between full and 30% opacity.
/// When false, it stays at full opacity (steady-state).
final bool pulsing;
final double size;
const ChainStatusDot({
super.key,
required this.color,
this.pulsing = false,
this.size = 8,
});
@override
State<ChainStatusDot> createState() => _FaiStatusDotState();
}
class _FaiStatusDotState extends State<ChainStatusDot>
with SingleTickerProviderStateMixin {
late final AnimationController _ctrl;
@override
void initState() {
super.initState();
_ctrl = AnimationController(
vsync: this,
duration: const Duration(milliseconds: 1400),
);
if (widget.pulsing) _ctrl.repeat(reverse: true);
}
@override
void didUpdateWidget(covariant ChainStatusDot old) {
super.didUpdateWidget(old);
if (widget.pulsing && !_ctrl.isAnimating) {
_ctrl.repeat(reverse: true);
} else if (!widget.pulsing && _ctrl.isAnimating) {
_ctrl.stop();
_ctrl.value = 0;
}
}
@override
void dispose() {
_ctrl.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return AnimatedBuilder(
animation: _ctrl,
builder: (_, _) {
final t = widget.pulsing ? _ctrl.value : 0.0;
final alpha = 1.0 - (t * 0.6);
return Container(
width: widget.size,
height: widget.size,
decoration: BoxDecoration(
color: widget.color.withValues(alpha: alpha),
shape: BoxShape.circle,
boxShadow: widget.pulsing
? [
BoxShadow(
color: widget.color.withValues(alpha: 0.4 * alpha),
blurRadius: 6 * (1 + t),
spreadRadius: 1 * t,
),
]
: const [],
),
);
},
);
}
}
/// Convenience presets.
class ChainStatusDots {
ChainStatusDots._();
static Widget live() =>
const ChainStatusDot(color: ChainColors.success, pulsing: true);
static Widget idle() => const ChainStatusDot(color: ChainColors.muted);
static Widget down() => const ChainStatusDot(color: ChainColors.danger);
}