trifid_mobile/lib/components/IPAndPortField.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widgets.dart';
import 'package:mobile_nebula/components/SpecialTextField.dart';
import 'package:mobile_nebula/models/IPAndPort.dart';
import '../services/utils.dart';
import 'IPField.dart';

//TODO: Support initialValue
class IPAndPortField extends StatefulWidget {
  const IPAndPortField({
    Key key,
    this.ipOnly = false,
    this.ipHelp = "ip address",
    this.autoFocus = false,
    this.focusNode,
    this.nextFocusNode,
    this.onChanged,
    this.textInputAction,
    this.noBorder = false,
    this.ipTextAlign,
    this.ipController,
    this.portController,
  }) : super(key: key);

  final String ipHelp;
  final bool ipOnly;
  final bool autoFocus;
  final FocusNode focusNode;
  final FocusNode nextFocusNode;
  final ValueChanged<IPAndPort> onChanged;
  final TextInputAction textInputAction;
  final bool noBorder;
  final TextAlign ipTextAlign;
  final TextEditingController ipController;
  final TextEditingController portController;

  @override
  _IPAndPortFieldState createState() => _IPAndPortFieldState();
}

//TODO: if the keyboard is open on the port field and you switch to dark mode, it crashes
//TODO: maybe add in a next/done step for numeric keyboards
//TODO: rig up focus node and next node
//TODO: rig up textInputAction
class _IPAndPortFieldState extends State<IPAndPortField> {
  final _portFocus = FocusNode();
  final _ipAndPort = IPAndPort();

  @override
  void initState() {
    //TODO: this won't track external controller changes appropriately
    _ipAndPort.ip = widget.ipController?.text ?? "";
    _ipAndPort.port = int.tryParse(widget.portController?.text ?? "");
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    var textStyle = CupertinoTheme.of(context).textTheme.textStyle;

    return Container(
        child: Row(children: <Widget>[
      Expanded(
          child: Padding(
              padding: EdgeInsets.fromLTRB(6, 6, 2, 6),
              child: IPField(
                help: widget.ipHelp,
                ipOnly: widget.ipOnly,
                nextFocusNode: _portFocus,
                textPadding: EdgeInsets.all(0),
                textInputAction: TextInputAction.next,
                focusNode: widget.focusNode,
                onChanged: (val) {
                  _ipAndPort.ip = val;
                  widget.onChanged(_ipAndPort);
                },
                textAlign: widget.ipTextAlign,
                controller: widget.ipController,
              ))),
      Text(":"),
      Container(
          width: Utils.textSize("00000", textStyle).width + 12,
          padding: EdgeInsets.fromLTRB(2, 6, 6, 6),
          child: SpecialTextField(
            keyboardType: TextInputType.number,
            focusNode: _portFocus,
            nextFocusNode: widget.nextFocusNode,
            controller: widget.portController,
            onChanged: (val) {
              _ipAndPort.port = int.tryParse(val ?? "");
              widget.onChanged(_ipAndPort);
            },
            maxLength: 5,
            inputFormatters: [FilteringTextInputFormatter.digitsOnly],
            textInputAction: TextInputAction.done,
            placeholder: 'port',
          ))
    ]));
  }

  @override
  void dispose() {
    _portFocus.dispose();
    super.dispose();
  }
}