You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
374 lines
10 KiB
Dart
374 lines
10 KiB
Dart
import 'dart:async';
|
|
|
|
import 'package:flutter/animation.dart';
|
|
import 'package:flutter/foundation.dart';
|
|
import 'package:flutter/material.dart';
|
|
import 'package:flutter/rendering.dart';
|
|
import 'package:flutter/services.dart';
|
|
|
|
typedef OnDone = void Function(String text);
|
|
|
|
class ProvidedPinBoxTextAnimation {
|
|
static AnimatedSwitcherTransitionBuilder scalingTransition = (child, animation) {
|
|
return ScaleTransition(
|
|
child: child,
|
|
scale: animation,
|
|
);
|
|
};
|
|
|
|
static AnimatedSwitcherTransitionBuilder defaultNoTransition = (Widget child, Animation<double> animation) {
|
|
return child;
|
|
};
|
|
}
|
|
|
|
class OTPWidget extends StatefulWidget {
|
|
final int maxLength;
|
|
final TextEditingController controller;
|
|
|
|
final Color defaultBorderColor;
|
|
final Color pinBoxColor;
|
|
final double pinBoxBorderWidth;
|
|
final double pinBoxRadius;
|
|
final bool hideDefaultKeyboard;
|
|
|
|
final TextStyle pinTextStyle;
|
|
final double pinBoxHeight;
|
|
final double pinBoxWidth;
|
|
final OnDone onDone;
|
|
final bool hasError;
|
|
final Color errorBorderColor;
|
|
final Color textBorderColor;
|
|
final Function(String) onTextChanged;
|
|
final bool autoFocus;
|
|
final FocusNode focusNode;
|
|
final AnimatedSwitcherTransitionBuilder pinTextAnimatedSwitcherTransition;
|
|
final Duration pinTextAnimatedSwitcherDuration;
|
|
final TextDirection textDirection;
|
|
final TextInputType keyboardType;
|
|
final EdgeInsets pinBoxOuterPadding;
|
|
|
|
const OTPWidget({
|
|
Key key,
|
|
this.maxLength: 4,
|
|
this.controller,
|
|
this.pinBoxWidth: 70.0,
|
|
this.pinBoxHeight: 70.0,
|
|
this.pinTextStyle,
|
|
this.onDone,
|
|
this.defaultBorderColor: Colors.black,
|
|
this.textBorderColor: Colors.black,
|
|
this.pinTextAnimatedSwitcherTransition,
|
|
this.pinTextAnimatedSwitcherDuration: const Duration(),
|
|
this.hasError: false,
|
|
this.errorBorderColor: Colors.red,
|
|
this.onTextChanged,
|
|
this.autoFocus: false,
|
|
this.focusNode,
|
|
this.textDirection: TextDirection.ltr,
|
|
this.keyboardType: TextInputType.number,
|
|
this.pinBoxOuterPadding = const EdgeInsets.symmetric(horizontal: 4.0),
|
|
this.pinBoxColor = Colors.white,
|
|
this.pinBoxBorderWidth = 2.0,
|
|
this.pinBoxRadius = 0,
|
|
this.hideDefaultKeyboard = false,
|
|
}) : super(key: key);
|
|
|
|
@override
|
|
State<StatefulWidget> createState() {
|
|
return OTPWidgetState();
|
|
}
|
|
}
|
|
|
|
class OTPWidgetState extends State<OTPWidget> with SingleTickerProviderStateMixin {
|
|
AnimationController _highlightAnimationController;
|
|
FocusNode focusNode;
|
|
String text = "";
|
|
int currentIndex = 0;
|
|
List<String> strList = [];
|
|
bool hasFocus = false;
|
|
|
|
@override
|
|
void didUpdateWidget(OTPWidget oldWidget) {
|
|
super.didUpdateWidget(oldWidget);
|
|
focusNode = widget.focusNode ?? focusNode;
|
|
|
|
if (oldWidget.maxLength < widget.maxLength) {
|
|
setState(() {
|
|
currentIndex = text.length;
|
|
});
|
|
widget.controller?.text = text;
|
|
widget.controller?.selection = TextSelection.collapsed(offset: text.length);
|
|
} else if (oldWidget.maxLength > widget.maxLength && widget.maxLength > 0 && text.length > 0 && text.length > widget.maxLength) {
|
|
setState(() {
|
|
text = text.substring(0, widget.maxLength);
|
|
currentIndex = text.length;
|
|
});
|
|
widget.controller?.text = text;
|
|
widget.controller?.selection = TextSelection.collapsed(offset: text.length);
|
|
}
|
|
}
|
|
|
|
_calculateStrList() {
|
|
if (strList.length > widget.maxLength) {
|
|
strList.length = widget.maxLength;
|
|
}
|
|
while (strList.length < widget.maxLength) {
|
|
strList.add("");
|
|
}
|
|
}
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
focusNode = widget.focusNode ?? FocusNode();
|
|
|
|
_initTextController();
|
|
_calculateStrList();
|
|
widget.controller?.addListener(_controllerListener);
|
|
focusNode?.addListener(_focusListener);
|
|
}
|
|
|
|
void _controllerListener() {
|
|
if (mounted == true) {
|
|
setState(() {
|
|
_initTextController();
|
|
});
|
|
var onTextChanged = widget.onTextChanged;
|
|
if (onTextChanged != null) {
|
|
onTextChanged(widget.controller?.text ?? "");
|
|
}
|
|
}
|
|
}
|
|
|
|
void _focusListener() {
|
|
if (mounted == true) {
|
|
setState(() {
|
|
hasFocus = focusNode?.hasFocus ?? false;
|
|
});
|
|
}
|
|
}
|
|
|
|
void _initTextController() {
|
|
if (widget.controller == null) {
|
|
return;
|
|
}
|
|
strList.clear();
|
|
var text = widget.controller?.text ?? "";
|
|
if (text.isNotEmpty) {
|
|
if (text.length > widget.maxLength) {
|
|
throw Exception("TextEditingController length exceeded maxLength!");
|
|
}
|
|
}
|
|
for (var i = 0; i < text.length; i++) {
|
|
strList.add(text[i]);
|
|
}
|
|
}
|
|
|
|
double get _width {
|
|
var width = 0.0;
|
|
for (var i = 0; i < widget.maxLength; i++) {
|
|
width += widget.pinBoxWidth;
|
|
if (i == 0) {
|
|
width += widget.pinBoxOuterPadding.left;
|
|
} else if (i + 1 == widget.maxLength) {
|
|
width += widget.pinBoxOuterPadding.right;
|
|
} else {
|
|
width += widget.pinBoxOuterPadding.left;
|
|
}
|
|
}
|
|
return width;
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
if (widget.focusNode == null) {
|
|
focusNode?.dispose();
|
|
} else {
|
|
focusNode?.removeListener(_focusListener);
|
|
}
|
|
_highlightAnimationController?.dispose();
|
|
widget.controller?.removeListener(_controllerListener);
|
|
|
|
super.dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Stack(
|
|
children: <Widget>[
|
|
_otpTextInput(),
|
|
_touchPinBoxRow(),
|
|
],
|
|
);
|
|
}
|
|
|
|
Widget _touchPinBoxRow() {
|
|
return widget.hideDefaultKeyboard
|
|
? _pinBoxRow(context)
|
|
: GestureDetector(
|
|
behavior: HitTestBehavior.opaque,
|
|
onTap: () {
|
|
if (hasFocus) {
|
|
FocusScope.of(context).requestFocus(FocusNode());
|
|
Future.delayed(Duration(milliseconds: 100), () {
|
|
FocusScope.of(context).requestFocus(focusNode);
|
|
});
|
|
} else {
|
|
FocusScope.of(context).requestFocus(focusNode);
|
|
}
|
|
},
|
|
child: _pinBoxRow(context),
|
|
);
|
|
}
|
|
|
|
Widget _otpTextInput() {
|
|
var transparentBorder = OutlineInputBorder(
|
|
borderSide: BorderSide(
|
|
color: Colors.transparent,
|
|
width: 0.0,
|
|
),
|
|
);
|
|
return Container(
|
|
width: _width,
|
|
height: widget.pinBoxHeight,
|
|
child: TextField(
|
|
autofocus: !kIsWeb ? widget.autoFocus : false,
|
|
enableInteractiveSelection: false,
|
|
focusNode: focusNode,
|
|
controller: widget.controller,
|
|
keyboardType: widget.keyboardType,
|
|
inputFormatters: widget.keyboardType == TextInputType.number ? <TextInputFormatter>[FilteringTextInputFormatter.digitsOnly] : null,
|
|
style: TextStyle(
|
|
height: 0.1,
|
|
color: Colors.transparent,
|
|
),
|
|
decoration: InputDecoration(
|
|
contentPadding: EdgeInsets.all(0),
|
|
focusedErrorBorder: transparentBorder,
|
|
errorBorder: transparentBorder,
|
|
disabledBorder: transparentBorder,
|
|
enabledBorder: transparentBorder,
|
|
focusedBorder: transparentBorder,
|
|
counterText: null,
|
|
counterStyle: null,
|
|
helperStyle: TextStyle(
|
|
height: 0.0,
|
|
color: Colors.transparent,
|
|
),
|
|
labelStyle: TextStyle(height: 0.1),
|
|
fillColor: Colors.transparent,
|
|
border: InputBorder.none,
|
|
),
|
|
cursorColor: Colors.transparent,
|
|
showCursor: false,
|
|
maxLength: widget.maxLength,
|
|
onChanged: _onTextChanged,
|
|
),
|
|
);
|
|
}
|
|
|
|
void _onTextChanged(text) {
|
|
var onTextChanged = widget.onTextChanged;
|
|
if (onTextChanged != null) {
|
|
onTextChanged(text);
|
|
}
|
|
setState(() {
|
|
this.text = text;
|
|
if (text.length >= currentIndex) {
|
|
for (int i = currentIndex; i < text.length; i++) {
|
|
strList[i] = text[i];
|
|
}
|
|
}
|
|
currentIndex = text.length;
|
|
});
|
|
if (text.length == widget.maxLength) {
|
|
FocusScope.of(context).requestFocus(FocusNode());
|
|
var onDone = widget.onDone;
|
|
if (onDone != null) {
|
|
onDone(text);
|
|
}
|
|
}
|
|
}
|
|
|
|
Widget _pinBoxRow(BuildContext context) {
|
|
_calculateStrList();
|
|
List<Widget> pinCodes = List.generate(widget.maxLength, (int i) {
|
|
return _buildPinCode(i, context);
|
|
});
|
|
return Row(children: pinCodes, mainAxisSize: MainAxisSize.min,mainAxisAlignment: MainAxisAlignment.spaceBetween,);
|
|
}
|
|
|
|
Widget _buildPinCode(int i, BuildContext context) {
|
|
Color borderColor;
|
|
Color pinBoxColor = widget.pinBoxColor;
|
|
|
|
if (widget.hasError) {
|
|
borderColor = widget.errorBorderColor;
|
|
} else if (i < text.length) {
|
|
borderColor = widget.textBorderColor;
|
|
} else {
|
|
borderColor = widget.defaultBorderColor;
|
|
pinBoxColor = widget.pinBoxColor;
|
|
}
|
|
|
|
EdgeInsets insets;
|
|
if (i == 0) {
|
|
insets = EdgeInsets.only(
|
|
left: 0,
|
|
top: widget.pinBoxOuterPadding.top,
|
|
right: widget.pinBoxOuterPadding.right,
|
|
bottom: widget.pinBoxOuterPadding.bottom,
|
|
);
|
|
} else if (i == strList.length - 1) {
|
|
insets = EdgeInsets.only(
|
|
left: widget.pinBoxOuterPadding.left,
|
|
top: widget.pinBoxOuterPadding.top,
|
|
right: 0,
|
|
bottom: widget.pinBoxOuterPadding.bottom,
|
|
);
|
|
} else {
|
|
insets = widget.pinBoxOuterPadding;
|
|
}
|
|
return Container(
|
|
key: ValueKey<String>("container$i"),
|
|
alignment: Alignment.center,
|
|
padding: EdgeInsets.symmetric(vertical: 4.0, horizontal: 1.0),
|
|
margin: insets,
|
|
child: _animatedTextBox(strList[i], i),
|
|
decoration: BoxDecoration(
|
|
border: Border.all(
|
|
color: borderColor,
|
|
width: widget.pinBoxBorderWidth,
|
|
),
|
|
color: pinBoxColor,
|
|
borderRadius: BorderRadius.circular(widget.pinBoxRadius),
|
|
),
|
|
width: widget.pinBoxWidth,
|
|
height: widget.pinBoxHeight,
|
|
);
|
|
}
|
|
|
|
Widget _animatedTextBox(String text, int i) {
|
|
if (widget.pinTextAnimatedSwitcherTransition != null) {
|
|
return AnimatedSwitcher(
|
|
duration: widget.pinTextAnimatedSwitcherDuration,
|
|
transitionBuilder: widget.pinTextAnimatedSwitcherTransition ??
|
|
(Widget child, Animation<double> animation) {
|
|
return child;
|
|
},
|
|
child: Text(
|
|
text,
|
|
key: ValueKey<String>("$text$i"),
|
|
style: widget.pinTextStyle,
|
|
),
|
|
);
|
|
} else {
|
|
return Text(
|
|
text,
|
|
key: ValueKey<String>("${strList[i]}$i"),
|
|
style: widget.pinTextStyle,
|
|
);
|
|
}
|
|
}
|
|
}
|