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;

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