发现页面

lib/views/moments/index/widgets/future_button.dart

@@ -0,0 +1,63 @@
+import 'package:flutter/material.dart';
+
+typedef VoidFutureCallBack = Future<void> Function();
+
+class FutureTextButton extends StatefulWidget {
+  const FutureTextButton({
+    Key? key,
+    this.onLongPress,
+    this.onHover,
+    this.onFocusChange,
+    this.style,
+    this.focusNode,
+    this.autofocus = false,
+    this.clipBehavior = Clip.none,
+    required this.child,
+    required this.onPressed,
+  }) : super(key: key);
+
+  final VoidFutureCallBack? onPressed;
+  final VoidCallback? onLongPress;
+  final ValueChanged<bool>? onHover;
+  final ValueChanged<bool>? onFocusChange;
+  final ButtonStyle? style;
+  final Clip clipBehavior;
+  final FocusNode? focusNode;
+  final bool autofocus;
+  final Widget child;
+
+  @override
+  State<FutureTextButton> createState() => _FutureTextButtonState();
+}
+
+class _FutureTextButtonState extends State<FutureTextButton> {
+  bool _isBusy = false;
+
+  Future<void> onPressed() async {
+    if (_isBusy) return;
+    setState(() => _isBusy = true);
+    try {
+      await widget.onPressed?.call();
+    } catch (e) {
+      rethrow;
+    } finally {
+      if (mounted) setState(() => _isBusy = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return TextButton(
+      key: widget.key,
+      onPressed: _isBusy || widget.onPressed == null ? null : () => onPressed(),
+      onLongPress: widget.onLongPress,
+      onHover: widget.onHover,
+      onFocusChange: widget.onFocusChange,
+      style: widget.style,
+      focusNode: widget.focusNode,
+      autofocus: widget.autofocus,
+      clipBehavior: widget.clipBehavior,
+      child: widget.child,
+    );
+  }
+}