142 lines
3.6 KiB
Dart
142 lines
3.6 KiB
Dart
import 'dart:convert';
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import 'package:appflowy_editor/appflowy_editor.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:universal_platform/universal_platform.dart';
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class CollabSelectionEditor extends StatefulWidget {
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const CollabSelectionEditor({super.key});
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@override
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State<CollabSelectionEditor> createState() => _CollabSelectionEditorState();
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}
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class _CollabSelectionEditorState extends State<CollabSelectionEditor> {
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late final Future<String> future;
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EditorState? editorState;
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late final List<RemoteSelection> remoteSelections = [
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RemoteSelection(
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id: '1',
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selection: Selection(
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start: Position(path: [0], offset: 0),
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end: Position(path: [0], offset: 5),
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),
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selectionColor: Colors.red,
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cursorColor: Colors.red,
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builder: _buildSelectionFlag,
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),
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// collapsed selection
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RemoteSelection(
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id: '2',
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selection: Selection.collapsed(
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Position(path: [1], offset: 3),
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),
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selectionColor: Colors.yellow,
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cursorColor: Colors.yellow,
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builder: _buildSelectionFlag,
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),
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// multi-line selection
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RemoteSelection(
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id: '3',
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selection: Selection(
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start: Position(path: [2], offset: 0),
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end: Position(path: [3], offset: 5),
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),
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selectionColor: Colors.green,
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cursorColor: Colors.green,
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builder: _buildSelectionFlag,
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),
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];
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@override
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void initState() {
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super.initState();
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future = UniversalPlatform.isDesktopOrWeb
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? rootBundle.loadString('assets/example.json')
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: rootBundle.loadString('assets/mobile_example.json').then((value) {
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return value;
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});
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}
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@override
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void dispose() {
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editorState?.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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body: Column(
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children: [
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Expanded(
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child: FutureBuilder<String>(
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future: future,
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builder: (context, snapshot) {
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if (snapshot.connectionState != ConnectionState.done) {
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return const Center(
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child: CircularProgressIndicator(),
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);
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}
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editorState?.dispose();
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editorState ??= EditorState(
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document: Document.fromJson(jsonDecode(snapshot.data!)),
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);
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return AppFlowyEditor(
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editorState: editorState!,
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);
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},
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),
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),
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const SizedBox(height: 16),
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ElevatedButton(
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onPressed: () {
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editorState?.remoteSelections.value = [...remoteSelections];
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},
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child: const Text('Add Selection'),
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),
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],
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),
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);
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}
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Widget _buildSelectionFlag(
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BuildContext context,
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RemoteSelection remoteSelection,
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Rect rect,
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) {
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final selection = remoteSelection.selection;
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if (selection.isCollapsed) {
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return Positioned(
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top: rect.top - 5.0,
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left: rect.right,
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child: const Text(
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'Lucas.Xu',
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style: TextStyle(
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backgroundColor: Colors.yellow,
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color: Colors.black,
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fontSize: 10,
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),
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),
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);
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}
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return Positioned(
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top: rect.top - 5.0,
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left: rect.left,
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child: const Text(
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'Guest',
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style: TextStyle(
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backgroundColor: Colors.yellow,
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color: Colors.black,
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fontSize: 10,
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),
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),
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);
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}
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}
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