reworked operation (#12)
Reviewed-on: #12 Co-authored-by: Mark M2 Macbook <marco@catelli.it> Co-committed-by: Mark M2 Macbook <marco@catelli.it>
This commit is contained in:
220
lib/features/attachments/ui/attachment_viewer_screen.dart
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220
lib/features/attachments/ui/attachment_viewer_screen.dart
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import 'dart:typed_data';
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import 'package:flutter/material.dart';
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import 'package:flux/core/utils/functions.dart';
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import 'package:flux/features/attachments/models/attachment_model.dart';
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import 'package:pdfx/pdfx.dart';
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import 'package:internet_file/internet_file.dart';
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class AttachmentViewerScreen extends StatefulWidget {
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final AttachmentModel attachment;
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final Function(String newName)? onRename;
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final VoidCallback? onDelete;
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const AttachmentViewerScreen({
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super.key,
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required this.attachment,
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this.onRename,
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this.onDelete,
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});
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@override
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State<AttachmentViewerScreen> createState() => _AttachmentViewerScreenState();
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}
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class _AttachmentViewerScreenState extends State<AttachmentViewerScreen> {
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PdfControllerPinch? _pdfController;
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bool _isLoading = true;
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String? _errorMessage;
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Uint8List? _fileBytes;
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late String _fileName;
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bool get isPdf => widget.attachment.extension.toLowerCase() == 'pdf';
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@override
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void initState() {
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super.initState();
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_fileName = widget.attachment.name;
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_loadFile();
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}
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Future<void> _loadFile() async {
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try {
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// 1. Capiamo da dove prendere i dati
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if (widget.attachment.localBytes != null) {
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_fileBytes = widget.attachment.localBytes;
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} else if (widget.attachment.storagePath != null &&
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widget.attachment.storagePath!.isNotEmpty) {
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final signedUrl = await getSignedUrl(widget.attachment.storagePath!);
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_fileBytes = await InternetFile.get(signedUrl);
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} else {
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throw Exception("Nessun documento trovato o byte mancanti.");
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}
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// 2. Se è PDF, inizializziamo il controller
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if (isPdf && _fileBytes != null) {
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_pdfController = PdfControllerPinch(
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document: PdfDocument.openData(_fileBytes!),
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);
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}
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if (mounted) setState(() => _isLoading = false);
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} catch (e) {
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if (mounted) {
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setState(() {
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_isLoading = false;
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_errorMessage = e.toString();
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});
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}
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}
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}
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@override
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void dispose() {
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_pdfController?.dispose();
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super.dispose();
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}
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void _showRenameDialog() {
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final ctrl = TextEditingController(text: _fileName);
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ctrl.selection = TextSelection(
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baseOffset: 0,
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extentOffset: ctrl.text.length,
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);
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final focusNode = FocusNode();
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showDialog(
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context: context,
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builder: (context) {
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WidgetsBinding.instance.addPostFrameCallback(
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(_) => focusNode.requestFocus(),
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);
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return AlertDialog(
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title: const Text('Rinomina File'),
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content: TextField(
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controller: ctrl,
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focusNode: focusNode,
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decoration: InputDecoration(
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labelText: 'Nuovo nome',
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suffixText: '.${widget.attachment.extension}',
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),
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onSubmitted: (val) {
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Navigator.pop(context);
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if (val.trim().isNotEmpty && widget.onRename != null) {
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setState(() {
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_fileName = val.trim();
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});
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widget.onRename!(val.trim());
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}
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},
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('Annulla'),
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),
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ElevatedButton(
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onPressed: () {
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Navigator.pop(context);
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if (ctrl.text.trim().isNotEmpty && widget.onRename != null) {
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setState(() {
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_fileName = ctrl.text.trim();
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});
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widget.onRename!(ctrl.text.trim());
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}
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},
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child: const Text('Salva'),
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),
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],
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);
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},
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);
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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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backgroundColor: Colors.black87, // Sfondo scuro per i viewer è il top
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appBar: AppBar(
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backgroundColor: Colors.black,
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foregroundColor: Colors.white,
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title: Text(_fileName, style: const TextStyle(fontSize: 16)),
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actions: [
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if (widget.onRename != null)
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IconButton(
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icon: const Icon(Icons.edit),
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tooltip: 'Rinomina',
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onPressed: _showRenameDialog,
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),
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if (widget.onDelete != null)
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IconButton(
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icon: const Icon(Icons.delete, color: Colors.redAccent),
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tooltip: 'Elimina',
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onPressed: () {
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// Chiediamo conferma
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showDialog(
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context: context,
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builder: (c) => AlertDialog(
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title: const Text('Eliminare file?'),
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content: const Text(
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'Sei sicuro di voler eliminare questo allegato?',
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(c),
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child: const Text('Annulla'),
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),
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ElevatedButton(
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style: ElevatedButton.styleFrom(
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backgroundColor: Colors.red,
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),
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onPressed: () {
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Navigator.pop(c); // Chiude dialog
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widget.onDelete!(); // Lancia eliminazione
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Navigator.pop(context); // Chiude il viewer
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},
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child: const Text('Elimina'),
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),
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],
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),
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);
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},
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),
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],
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),
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body: _buildBody(),
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);
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}
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Widget _buildBody() {
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if (_isLoading) {
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return const Center(
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child: CircularProgressIndicator(color: Colors.white),
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);
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}
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if (_errorMessage != null) {
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return Center(
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child: Text(
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'Errore: $_errorMessage',
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style: const TextStyle(color: Colors.redAccent),
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),
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);
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}
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if (_fileBytes == null) {
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return const Center(
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child: Text(
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'File non disponibile',
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style: TextStyle(color: Colors.white),
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),
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);
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}
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if (isPdf && _pdfController != null) {
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return PdfViewPinch(controller: _pdfController!);
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} else {
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return InteractiveViewer(
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maxScale: 5.0,
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child: Center(child: Image.memory(_fileBytes!)),
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);
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}
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}
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}
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