kmpdfkit_demo/lib/widgets/viewer/pdfbota/cpdf_bota_page.dart

import 'package:compdfkit_flutter/common/util/Strings.dart';
import 'package:compdfkit_flutter/core/cpdf_view_ctrl.dart';
import 'package:compdfkit_flutter/theme/colors.dart';
import 'package:compdfkit_flutter/theme/themes.dart';
import 'package:compdfkit_flutter/widgets/common/views/cpdf_scaffold.dart';
import 'package:compdfkit_flutter/widgets/viewer/pdfbota/pdfoutline/cpdf_outline_page.dart';
import 'package:compdfkit_flutter/widgets/viewer/pdfbota/pdfthumbnail/cpdf_thumbnail_page.dart';
import 'package:flutter/material.dart';

import '../../common/views/cpdf_tool_bar.dart';

///  Copyright © 2014-2023 PDF Technologies, Inc. All Rights Reserved.
///
///  THIS SOURCE CODE AND ANY ACCOMPANYING DOCUMENTATION ARE PROTECTED BY INTERNATIONAL COPYRIGHT LAW
///  AND MAY NOT BE RESOLD OR REDISTRIBUTED. USAGE IS BOUND TO THE ComPDFKit LICENSE AGREEMENT.
///  UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS SUBJECT TO CIVIL AND CRIMINAL PENALTIES.
///  This notice may not be removed from this file.

enum CPDFBotaType { thumbnails, outline, annotations, bookmarks }

class CPDFBotaPage extends StatefulWidget {
  final bool isDark;

  final List<CPDFBotaType> types;

  final CPDFViewCtrl ctrl;

  const CPDFBotaPage(
      {super.key,
      required this.ctrl,
      this.isDark = false,
      required this.types});

  @override
  State<CPDFBotaPage> createState() => _CPDFBotaPageState();
}

class _CPDFBotaPageState extends State<CPDFBotaPage>
    with SingleTickerProviderStateMixin {
  late TabController _tabController;

  final ValueNotifier<String> _title = ValueNotifier('');

  @override
  void initState() {
    super.initState();
    _title.value = titles()[0];
    _tabController = TabController(length: widget.types.length, vsync: this);
    _tabController.addListener(() {
      if (!_tabController.indexIsChanging) {
        _title.value = titles()[_tabController.index];
      }
    });
  }

  @override
  void dispose() {
    _title.dispose();
    _tabController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return CPDFScaffold(
        isDark: widget.isDark,
        appBar: CPDFToolbar(
          bottom: widget.types.length > 1
              ? TabBar(controller: _tabController, tabs: _tabItems())
              : null,
          leadingIcon: IconButton(
              onPressed: () {
                Navigator.pop(context);
              },
              icon: Icon(Icons.arrow_back,
                  color: Theme.of(context).colorScheme.onBackground)),
          title: ValueListenableBuilder(
            builder: (BuildContext context, String title, Widget? child) {
              return Text(title,
                  style: const TextStyle(
                      fontFamily: 'sans-serif-medium', fontSize: 22));
            },
            valueListenable: _title,
          ),
        ),
        body: TabBarView(
          controller: _tabController,
          children: _pages(),
        ));
  }

  List<String> titles() {
    List<String> titles = widget.types.map((e) {
      switch (e) {
        case CPDFBotaType.annotations:
          return Strings.Annotations;
        case CPDFBotaType.bookmarks:
          return Strings.Bookmarks;
        case CPDFBotaType.outline:
          return Strings.Outlines;
        default:
          return Strings.Thumbnails;
      }
    }).toList();
    return titles;
  }

  List<Widget> _tabItems() {
    return titles().map((e) => Tab(text: e)).toList();
  }

  List<Widget> _pages() {
    return widget.types.map((e) {
      switch (e) {
        case CPDFBotaType.thumbnails:
          return CPDFThumbnailPage(
            document: widget.ctrl.document,
            currentPageIndex: widget.ctrl.currentPageIndex,
          );
        // case CPDFBotaType.annotations:
        //   return Strings.Annotations;
        // case CPDFBotaType.bookmarks:
        //   return Strings.Bookmarks;
        case CPDFBotaType.outline:
          return CPDFOutlinePage(document: widget.ctrl.document);
        default:
          return Text(e.name);
      }
    }).toList();
  }
}