dab246
80 lines
2.1 KiB
Dart
80 lines
2.1 KiB
Dart
import 'package:flutter/material.dart';
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typedef OnTextSelectionChanged = Function(TextSelectionData?);
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class TextSelectionData {
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final bool hasSelection;
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final String? selectedText;
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final TextSelectionCoordinates? coordinates;
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const TextSelectionData({
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required this.hasSelection,
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this.selectedText,
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this.coordinates,
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});
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factory TextSelectionData.empty() {
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return const TextSelectionData(hasSelection: false);
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}
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factory TextSelectionData.fromMap(Map<dynamic, dynamic> data) {
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try {
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final hasSelection = data['hasSelection'] as bool? ?? false;
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if (!hasSelection) {
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return TextSelectionData.empty();
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}
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final selectedText = data['selectedText'] as String?;
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final coordinatesData = data['coordinates'];
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if (coordinatesData != null && selectedText != null) {
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final coordinates = TextSelectionCoordinates.fromMap(coordinatesData);
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return TextSelectionData(
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hasSelection: true,
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selectedText: selectedText,
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coordinates: coordinates,
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);
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}
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return TextSelectionData.empty();
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} catch (e) {
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return TextSelectionData.empty();
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}
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}
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}
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class TextSelectionCoordinates {
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final double x;
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final double y;
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final double width;
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final double height;
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const TextSelectionCoordinates({
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required this.x,
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required this.y,
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required this.width,
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required this.height,
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});
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factory TextSelectionCoordinates.fromMap(Map<dynamic, dynamic> data) {
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return TextSelectionCoordinates(
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x: (data['x'] as num?)?.toDouble() ?? 0.0,
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y: (data['y'] as num?)?.toDouble() ?? 0.0,
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width: (data['width'] as num?)?.toDouble() ?? 0.0,
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height: (data['height'] as num?)?.toDouble() ?? 0.0,
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);
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}
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Offset get position => Offset(x, y);
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}
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mixin TextSelectionMixin<T extends StatefulWidget> on State<T> {
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OnTextSelectionChanged? get onSelectionChanged => null;
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void handleSelectionChange(Map<dynamic, dynamic> data) {
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final selectionData = TextSelectionData.fromMap(data);
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onSelectionChanged?.call(selectionData);
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}
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}
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