kmpdfkit_demo/lib/widgets/viewer/pdfbota/pdfbookmark/cpdf_bookmark_page.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.

import 'package:compdfkit_flutter/common/util/Strings.dart';
import 'package:compdfkit_flutter/core/document/cpdf_bookmark.dart';
import 'package:compdfkit_flutter/core/document/cpdf_document.dart';
import 'package:compdfkit_flutter/widgets/common/dialog/cpd_input_dialog_widget.dart';
import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';

import '../../../common/dialog/cpdf_base_input_dialog_widget.dart';

class CPDFBookmarkPage extends StatefulWidget {
  final int currentPageIndex;

  final bool isDark;

  final CPDFDocument document;

  const CPDFBookmarkPage(
      {Key? key,
      this.isDark = false,
      required this.document,
      required this.currentPageIndex})
      : super(key: key);

  @override
  State<CPDFBookmarkPage> createState() => _CPDFBookmarkPageState();
}

class _CPDFBookmarkPageState extends State<CPDFBookmarkPage> with AutomaticKeepAliveClientMixin{
  late Future<List<CPDFBookmark>> _bookmarks;

  @override
  void initState() {
    super.initState();
    _bookmarks = widget.document.getBookmarks();
  }

  @override
  Widget build(BuildContext context) {
    return Stack(
      children: [
        // _item(CPDFBookmark('ComPDFKit SDK', 0)),
        Positioned(
            child: FutureBuilder(
          future: _bookmarks,
          builder: (context, snapshot) {
            if (snapshot.connectionState == ConnectionState.done &&
                snapshot.hasData) {
              List<CPDFBookmark> bookmarks = snapshot.data!;
              return ListView.builder(
                  itemCount: bookmarks.length,
                  itemBuilder: (context, index) {
                    return _item(bookmarks[index]);
                  });
            } else {
              return const Padding(padding: EdgeInsets.zero);
            }
          },
        )),
        Positioned(
            bottom: 16,
            right: 16,
            child: FloatingActionButton(
              onPressed: () {
                addBookmark(context);
              },
              child: const Icon(
                Icons.add,
                color: Colors.white,
              ),
            ))
      ],
    );
  }

  Widget _item(CPDFBookmark bookmark) {
    return Ink(
      height: 46.5,
      child: InkWell(
        onTap: () {
          Navigator.pop(context, bookmark.pageIndex);
        },
        child: Column(
          children: [
            SizedBox(
                height: 46,
                child: Row(
                  children: [
                    Expanded(
                        child: Padding(
                            padding: const EdgeInsets.only(left: 16),
                            child: Text(bookmark.title,
                                maxLines: 1,
                                overflow: TextOverflow.ellipsis,
                                style:
                                    Theme.of(context).textTheme.bodyMedium))),
                    Row(
                      mainAxisAlignment: MainAxisAlignment.end,
                      children: [
                        Text(
                          '${Strings.Page} ${(bookmark.pageIndex + 1)}',
                          style: Theme.of(context).textTheme.bodyMedium,
                        ),
                        const Padding(padding: EdgeInsets.only(right: 6)),
                        PopupMenuButton(
                          elevation: 2,
                          offset: const Offset(-20, 45),
                          icon: Image.asset(
                            'assets/images/ic_vertical_more.png',
                            package: 'compdfkit_flutter',
                            width: 24,
                            height: 24,
                            color: Theme.of(context).colorScheme.onPrimary,
                          ),
                          itemBuilder: (context) => [
                            const PopupMenuItem(
                                value: 1, child: Text(Strings.Edit)),
                            const PopupMenuItem(
                                value: 2, child: Text(Strings.Delete)),
                          ],
                          onSelected: (value) async {
                            if (value == 1) {
                              updateBookmark(context, bookmark);
                            } else {
                              removeBookmark(bookmark);
                            }
                          },
                        ),
                        const Padding(padding: EdgeInsets.only(right: 16))
                      ],
                    )
                  ],
                )),
            const Divider(
              height: 0.5,
            )
          ],
        ),
      ),
    );
  }

  Future<void> addBookmark(BuildContext context) async {
    bool hasBookmark =
        await widget.document.hasBookmark(widget.currentPageIndex);
    if (hasBookmark) {
      Fluttertoast.showToast(
          msg: Strings.HasBookmarkTips, toastLength: Toast.LENGTH_LONG);
      return;
    }
    if (!context.mounted) {
      return;
    }
    String? value = await showCPDFInputDialog(context,
        title: Strings.AddBookmarks,
        isDark: widget.isDark,
        hintText: Strings.BookmarkTitle,
        cancelText: Strings.Cancel,
        positiveText: Strings.OK, onCancel: () {
      Navigator.pop(context);
    }, onPositive: (value) {
      Navigator.pop(context, value);
    });
    if (value != null) {
      widget.document.addBookmark(CPDFBookmark(value, widget.currentPageIndex));
      setState(() {
        _bookmarks = widget.document.getBookmarks();
      });
    }
  }

  Future<void> removeBookmark(CPDFBookmark bookmark) async {
    bool result = await widget.document.removeBookmark(bookmark.pageIndex);
    if (result) {
      setState(() {
        _bookmarks = widget.document.getBookmarks();
      });
    }
  }

  Future<void> updateBookmark(
      BuildContext context, CPDFBookmark bookmark) async {
    String? value = await showCPDFInputDialog(context,
        title: Strings.EditBookmarks,
        text: bookmark.title,
        isDark: widget.isDark,
        hintText: Strings.BookmarkTitle,
        cancelText: Strings.Cancel,
        positiveText: Strings.OK, onCancel: () {
      Navigator.pop(context);
    }, onPositive: (value) {
      Navigator.pop(context, value);
    });
    if (value != null) {
      widget.document.updateBookmark(bookmark.pageIndex, value);
      setState(() {
        _bookmarks = widget.document.getBookmarks();
      });
    }
  }

  @override
  bool get wantKeepAlive => true;
}