kmpdfkit_demo/lib/widgets/common/dialog/cpdf_base_input_dialog_widget.dart

import 'package:compdfkit_flutter/theme/themes.dart';
import 'package:flutter/material.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.

class CPDFPageNavigationWidget extends StatefulWidget {
  int pageCount = 0;

  String title;

  String hintText;

  String cancelText;

  String positiveText;

  bool isDark = false;

  CPDFPageNavigationWidget(
      {required this.pageCount,
      this.title = 'Enter a page number',
      this.hintText = 'Page (1/~)',
      this.cancelText = 'CANCEL',
      this.positiveText = 'OK',
      this.isDark = true,
      super.key});

  @override
  State<CPDFPageNavigationWidget> createState() =>
      _CPDFPageNavigationWidgetState();
}

class _CPDFPageNavigationWidgetState extends State<CPDFPageNavigationWidget> {
  bool _enable = false;

  final TextEditingController _controller = TextEditingController();

  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Theme(
        data: widget.isDark ? comPDFKitDarkTheme : comPDFKitLightTheme,
        child: Builder(builder: (context) {
          return AlertDialog(
            contentPadding:
                const EdgeInsets.symmetric(horizontal: 24, vertical: 8),
            title: Text(widget.title,
                style: Theme.of(context).textTheme.titleMedium),
            content: SizedBox(
              width: 260,
              child: TextField(
                keyboardType: TextInputType.number,
                controller: _controller,
                decoration: textFieldStyle(context).copyWith(
                  hintText: widget.hintText,
                ),
                onChanged: (v) {
                  int jumpPageIndex = int.tryParse(v) ?? 0;
                  setState(() {
                    _enable = v.isNotEmpty &&
                        jumpPageIndex > 0 &&
                        jumpPageIndex <= widget.pageCount;
                  });
                },
              ),
            ),
            actions: <Widget>[
              TextButton(
                  onPressed: () {
                    Navigator.pop(context);
                  },
                  child: Text(widget.cancelText)),
              TextButton(
                  onPressed: !_enable
                      ? null
                      : () {
                          int pageIndex =
                              int.tryParse(_controller.value.text) ?? 0;
                          Navigator.pop(context, pageIndex - 1);
                        },
                  child: Text(
                    widget.positiveText,
                    style: TextStyle(),
                  )),
            ],
          );
        }));
  }
}