35 lines
913 B
Dart
35 lines
913 B
Dart
import 'package:flutter/material.dart';
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/// Mixin that provides focus management for library tabs.
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/// Handles the lifecycle of a focus node for the first item and provides
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/// a method to request focus on that item.
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mixin LibraryTabFocusMixin<T extends StatefulWidget> on State<T> {
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/// Focus node for the first item (for programmatic focus)
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late final FocusNode firstItemFocusNode;
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/// Debug label for the focus node
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String get focusNodeDebugLabel;
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/// Number of items in the list/grid
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int get itemCount;
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@override
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void initState() {
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super.initState();
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firstItemFocusNode = FocusNode(debugLabel: focusNodeDebugLabel);
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}
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@override
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void dispose() {
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firstItemFocusNode.dispose();
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super.dispose();
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}
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/// Focus the first item in the grid/list (for tab activation)
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void focusFirstItem() {
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if (itemCount > 0) {
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firstItemFocusNode.requestFocus();
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}
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}
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}
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