kmpdfkit_demo/lib/widgets/viewer/pdfinfo/cpdf_document_info_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/common/util/cpdf_date_util.dart';
import 'package:compdfkit_flutter/core/document/cpdf_document.dart';
import 'package:compdfkit_flutter/core/document/cpdf_info.dart';
import 'package:compdfkit_flutter/core/document/cpdf_permissions_info.dart';
import 'package:compdfkit_flutter/widgets/common/views/cpdf_scaffold.dart';
import 'package:compdfkit_flutter/widgets/common/views/cpdf_tool_bar.dart';
import 'package:flutter/material.dart';

class CPDFDocumentInfoPage extends StatefulWidget {
  final bool isDark;

  final CPDFDocument document;

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

  @override
  State<CPDFDocumentInfoPage> createState() => _CPDFDocumentInfoPageState();
}

class _CPDFDocumentInfoPageState extends State<CPDFDocumentInfoPage> {
  @override
  Widget build(BuildContext context) {
    return CPDFScaffold(
      isDark: widget.isDark,
      appBar: CPDFToolbar.normal(
        context: context,
        titleText: Strings.DocumentInfo,
        leadingOnPressed: () {
          Navigator.pop(context);
        },
      ),
      body:ListView(children: [_documentInfo(), _permissionInfo()],),
    );
  }

  Widget _documentInfo() {
    return FutureBuilder(
        future: widget.document.getInfo(),
        builder: (context, snapshot) {
          if (snapshot.connectionState == ConnectionState.done &&
              snapshot.hasData) {
            CPDFInfo info = snapshot.data!;
            return Column(
              children: [
                const CPDFDocumentInfoTitle(title: Strings.Abstract),
                CPDFDocumentInfoItem(
                    title: Strings.FileName, content: info.fileName),
                CPDFDocumentInfoItem(
                    title: Strings.FileSize, content: info.fileSizeStr()),
                CPDFDocumentInfoItem(title: Strings.Title, content: info.title),
                CPDFDocumentInfoItem(
                    title: Strings.Author, content: info.author),
                CPDFDocumentInfoItem(
                    title: Strings.Subject, content: info.subject),
                CPDFDocumentInfoItem(
                    title: Strings.Keywords, content: info.keywords),
                const CPDFDocumentInfoTitle(title: Strings.CreateInformation),
                CPDFDocumentInfoItem(
                    title: Strings.Version,
                    content: info.majorVersion.toString()),
                CPDFDocumentInfoItem(
                    title: Strings.Pages, content: info.pageCount.toString()),
                CPDFDocumentInfoItem(
                    title: Strings.Creator, content: info.creator),
                CPDFDocumentInfoItem(
                    title: Strings.CreationDate,
                    content: CPDFDateUtil.format(info.creationDate)),
                CPDFDocumentInfoItem(
                    title: Strings.ModificationDate,
                    content: CPDFDateUtil.format(info.modificationDate)),
              ],
            );
          } else {
            return const Padding(padding: EdgeInsets.zero);
          }
        });
  }

  Widget _permissionInfo() {
    return FutureBuilder(
        future: widget.document.getPermissionsInfo(),
        builder: (context, snapshot) {
          if (snapshot.connectionState == ConnectionState.done &&
              snapshot.hasData) {
            CPDFPermissionsInfo info = snapshot.data!;
            return Column(
              children: [
                const CPDFDocumentInfoTitle(title: Strings.CreateInformation),
                CPDFDocumentInfoItem(
                    title: Strings.Printing,
                    content: _allowStr(info.allowsPrinting)),
                CPDFDocumentInfoItem(
                    title: Strings.ContentCopying, content: _allowStr(info.allowsCopying)),
                CPDFDocumentInfoItem(
                    title: Strings.DocumentChange, content: _allowStr(info.allowsDocumentChanges)),
                CPDFDocumentInfoItem(
                    title: Strings.DocumentAssembly,
                    content: _allowStr(info.allowsDocumentAssembly)),
                CPDFDocumentInfoItem(
                    title: Strings.Commenting,
                    content: _allowStr(info.allowsCommenting)),
                CPDFDocumentInfoItem(
                    title: Strings.FillingOfFormField,
                    content: _allowStr(info.allowsFormFieldEntry)),
              ],
            );
          } else {
            return const Padding(padding: EdgeInsets.zero);
          }
        });
  }

  String _allowStr(bool allow) {
    return allow ? Strings.Allowed : Strings.NotAllowed;
  }

}

class CPDFDocumentInfoTitle extends StatelessWidget {
  final String title;

  const CPDFDocumentInfoTitle({Key? key, required this.title})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Container(
      alignment: Alignment.centerLeft,
      height: 28,
      padding: const EdgeInsets.symmetric(horizontal: 16),
      color: Theme.of(context).colorScheme.secondaryContainer,
      child: Text(
        title,
        style: Theme.of(context).textTheme.labelMedium,
      ),
    );
  }
}

class CPDFDocumentInfoItem extends StatelessWidget {
  final String title;

  final String content;

  const CPDFDocumentInfoItem(
      {Key? key, required this.title, required this.content})
      : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Container(
        color: Theme.of(context).colorScheme.background,
        padding: const EdgeInsets.only(left: 16),
        child: Column(
          children: [
            SizedBox(
                height: 56,
                child: Row(
                  mainAxisSize: MainAxisSize.max,
                  children: [
                    Text('$title:',
                        style: Theme.of(context).textTheme.labelLarge),
                    Expanded(
                        child: Container(
                      alignment: Alignment.centerRight,
                      padding: const EdgeInsets.only(left: 10, right: 16),
                      child: Text(
                        content,
                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                            color:
                                Theme.of(context).colorScheme.primaryContainer),
                      ),
                    ))
                  ],
                )),
            const Divider(height: 0.5)
          ],
        ));
  }
}