kmpdfkit_demo/lib/widgets/function/attrwidget/attr_link_widget.dart

import 'package:flutter/material.dart';
import 'package:kmpdfkit_demo/widgets/contains.dart';
import 'package:kmpdfkit_demo/widgets/events.dart';

import '../../models/annot_attribute_bean.dart';


///  attr_link_widget.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.


typedef AttrLinkCallback = Function(LinkType linkType, String linkUrl, int linkPage, String linkEmail);
typedef AttrLinkCancelCreateCallback = Function(bool cancelCreateLink);

class AttrLinkWidget extends StatefulWidget {

  final AttrLinkCallback callback;
  final AttrLinkCancelCreateCallback cancelCreateCallback;
  final AnnotAttributeBean attributeBean;
  const AttrLinkWidget({Key? key,required this.attributeBean, required this.callback, required this.cancelCreateCallback}) : super(key: key);

  @override
  State<AttrLinkWidget> createState() => _AttrLinkWidgetState();
}

class _AttrLinkWidgetState extends State<AttrLinkWidget> {
  final TextEditingController _webTextController =
      TextEditingController(text: 'http://');
  final TextEditingController _pageTextController = TextEditingController();
  final TextEditingController _emailTextController = TextEditingController();
  late LinkType selectType;

  bool linkDataIsValid = true;
  int pageCount = 1;


  @override
  void initState() {
    super.initState();
    initLinkData();
    getDocumentPageCount().then((value) {
      setState(() {
        pageCount = value;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return  AlertDialog(
      title: const Text('New Link'),
      content: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: [
              _linkTypeWidget(LinkType.website, Icons.language, 'URL'),
              _linkTypeWidget(LinkType.page, Icons.description_outlined, 'Page'),
              _linkTypeWidget(LinkType.email, Icons.email_outlined, 'Email')
            ],
          ),
          if (selectType == LinkType.website) ...{
            TextField(
              controller: _webTextController,
              keyboardType: TextInputType.url,
              onChanged: (value){
                checkDataIsValid();
              },
            )
          } else if (selectType == LinkType.page) ...{
            TextField(
              controller: _pageTextController,
              keyboardType: TextInputType.number,
              decoration: InputDecoration(hintText: '1-$pageCount',hintStyle: const TextStyle(fontSize: 12)),
              onChanged: (value){
                checkDataIsValid();
              },
            )
          } else ...{
            TextField(
              controller: _emailTextController,
              keyboardType: TextInputType.emailAddress,
              decoration: const InputDecoration(hintText: 'support@17pdf.com',hintStyle: TextStyle(fontSize: 12)),
              onChanged: (value){
                checkDataIsValid();
              },
            )
          }
        ],
      ),
      actions: [
        TextButton(
            onPressed: () {
              widget.cancelCreateCallback(true);
              Navigator.pop(context);
            },
            child: const Text('Cancel', style: TextStyle(color: Colors.grey),)),
        TextButton(onPressed: linkDataIsValid ? () {
          widget.callback(selectType, _webTextController.text, _pageTextController.text.isNotEmpty ? int.parse(_pageTextController.text) : 0, _emailTextController.text);
          Navigator.pop(context);
        } : null, child: Text('Done',style: TextStyle(color: linkDataIsValid ? Colors.blue : Colors.grey),))
      ],
    );
  }

  void checkDataIsValid() {
    setState(() {
      switch(selectType){
        case LinkType.website:
          linkDataIsValid =  _webTextController.text.isNotEmpty;
          break;
        case LinkType.page :
          linkDataIsValid = _pageTextController.text.isNotEmpty;
          break;
        case LinkType.email:
          linkDataIsValid = _emailTextController.text.isNotEmpty;
          break;
      }
    });
  }

  Widget _linkTypeWidget(LinkType linkType, IconData icon, String title) {
    return InkWell(
      child: Column(
        children: [
          Icon(icon, color: selectType == linkType ? Colors.blue : Colors.grey),
          Text(
            title,
            style: TextStyle(
                color: selectType == linkType ? Colors.blue : Colors.grey),
          )
        ],
      ),
      onTap: (){
        setState(() {
          selectType = linkType;
        });
        checkDataIsValid();
      },
    );
  }


  void initLinkData(){
    selectType = widget.attributeBean.linkType;
    switch(selectType){
      case LinkType.website:
        _webTextController.text = widget.attributeBean.linkWeb.isEmpty ? "http://" : widget.attributeBean.linkWeb;
        break;
      case LinkType.email:
        _emailTextController.text = widget.attributeBean.linkEmail;
        break;
      case LinkType.page:
        _pageTextController.text = widget.attributeBean.linkPage.toString();
        break;
    }
  }
}