InputDecoration _getEffectiveDecoration()
{
MaterialLocalizations localizations = MaterialLocalizations.of(this.context);
ThemeData themeData = Theme.of(this.context);
InputDecoration effectiveDecoration = (this.widget.decoration ?? new InputDecoration())
.applyDefaults(themeData.inputDecorationTheme)
.copyWith(
enabled: this.widget.enabled,
hintMaxLines: this.widget.decoration?.hintMaxLines ?? this.widget.maxLines
);
if (effectiveDecoration.counter != null || effectiveDecoration.counterText != null)
{
return(effectiveDecoration);
}
Widget counter;
int currentLength = this._effectiveController.value.text.Length;
if (effectiveDecoration.counter == null &&
effectiveDecoration.counterText == null &&
this.widget.buildCounter != null)
{
bool isFocused = this._effectiveFocusNode.hasFocus;
counter = this.widget.buildCounter(
this.context,
currentLength: currentLength,
maxLength: this.widget.maxLength,
isFocused: isFocused
);
return(effectiveDecoration.copyWith(counter: counter));
}
if (this.widget.maxLength == null)
{
return(effectiveDecoration);
}
string counterText = $"{currentLength}";
if (this.widget.maxLength > 0)
{
counterText += $"/{this.widget.maxLength}";
if (this._effectiveController.value.text.Length > this.widget.maxLength)
{
return(effectiveDecoration.copyWith(
errorText: effectiveDecoration.errorText ?? "",
counterStyle: effectiveDecoration.errorStyle
?? themeData.textTheme.caption.copyWith(color: themeData.errorColor),
counterText: counterText
));
}
}
// Handle length exceeds maxLength
return(effectiveDecoration.copyWith(
counterText: counterText
));
}
public DropdownButtonFormField(
Key key = null,
T value = null,
List <DropdownMenuItem <T> > items = null,
ValueChanged <T> onChanged = null,
InputDecoration decoration = null,
FormFieldSetter <T> onSaved = null,
FormFieldValidator <T> validator = null,
Widget hint = null
) : base(
key: key,
onSaved: onSaved,
initialValue: value,
validator: validator,
builder: (FormFieldState <T> field) => {
InputDecoration effectiveDecoration = (decoration ?? new InputDecoration())
.applyDefaults(Theme.of(field.context).inputDecorationTheme);
return(new InputDecorator(
decoration: effectiveDecoration.copyWith(errorText: field.errorText),
isEmpty: value == null,
child: new DropdownButtonHideUnderline(
child: new DropdownButton <T>(
isDense: true,
value: value,
items: items,
hint: hint,
onChanged: field.didChange
)
)
));
}
) {
this.onChanged = onChanged;
}
InputDecoration _getEffectiveDecoration()
{
MaterialLocalizations localizations = MaterialLocalizations.of(this.context);
InputDecoration effectiveDecoration = (this.widget.decoration ?? new InputDecoration())
.applyDefaults(Theme.of(this.context).inputDecorationTheme)
.copyWith(
enabled: this.widget.enabled
);
if (!this.needsCounter)
{
return(effectiveDecoration);
}
int currentLength = this._effectiveController.value.text.Length;
string counterText = $"{currentLength}";
if (this.widget.maxLength != TextField.noMaxLength)
{
counterText += $"/{this.widget.maxLength}";
}
// Handle length exceeds maxLength
if (this._effectiveController.value.text.Length > this.widget.maxLength)
{
ThemeData themeData = Theme.of(this.context);
return(effectiveDecoration.copyWith(
errorText: effectiveDecoration.errorText ?? "",
counterStyle: effectiveDecoration.errorStyle
?? themeData.textTheme.caption.copyWith(color: themeData.errorColor),
counterText: counterText
));
}
return(effectiveDecoration.copyWith(
counterText: counterText
));
}
public TextFormField(
Key key = null,
TextEditingController controller = null,
string initialValue = null,
FocusNode focusNode = null,
InputDecoration decoration = null,
TextInputType keyboardType = null,
TextCapitalization textCapitalization = TextCapitalization.none,
TextInputAction?textInputAction = null,
TextStyle style = null,
TextDirection?textDirection = null,
TextAlign textAlign = TextAlign.left,
bool autofocus = false,
bool obscureText = false,
bool autocorrect = true,
bool autovalidate = false,
bool maxLengthEnforced = true,
int maxLines = 1,
int?maxLength = null,
VoidCallback onEditingComplete = null,
ValueChanged <string> onFieldSubmitted = null,
FormFieldSetter <string> onSaved = null,
FormFieldValidator <string> validator = null,
List <TextInputFormatter> inputFormatters = null,
bool enabled = true,
float cursorWidth = 2.0f,
Radius cursorRadius = null,
Color cursorColor = null,
Brightness?keyboardAppearance = null,
EdgeInsets scrollPadding = null,
bool enableInteractiveSelection = true,
InputCounterWidgetBuilder buildCounter = null
) : base(
key: key,
initialValue: controller != null ? controller.text : (initialValue ?? ""),
onSaved: onSaved,
validator: validator,
autovalidate: autovalidate,
enabled: enabled,
builder: (FormFieldState <string> field) => {
_TextFormFieldState state = (_TextFormFieldState)field;
InputDecoration effectiveDecoration = (decoration ?? new InputDecoration())
.applyDefaults(Theme.of(field.context).inputDecorationTheme);
return(new TextField(
controller: state._effectiveController,
focusNode: focusNode,
decoration: effectiveDecoration.copyWith(errorText: field.errorText),
keyboardType: keyboardType,
textInputAction: textInputAction,
style: style,
textAlign: textAlign,
textDirection: textDirection ?? TextDirection.ltr,
textCapitalization: textCapitalization,
autofocus: autofocus,
obscureText: obscureText,
autocorrect: autocorrect,
maxLengthEnforced: maxLengthEnforced,
maxLines: maxLines,
maxLength: maxLength,
onChanged: field.didChange,
onEditingComplete: onEditingComplete,
onSubmitted: onFieldSubmitted,
inputFormatters: inputFormatters,
enabled: enabled,
cursorWidth: cursorWidth,
cursorRadius: cursorRadius,
cursorColor: cursorColor,
scrollPadding: scrollPadding ?? EdgeInsets.all(20.0f),
keyboardAppearance: keyboardAppearance,
enableInteractiveSelection: enableInteractiveSelection,
buildCounter: buildCounter
));
}
) {
D.assert(initialValue == null || controller == null);
D.assert(maxLines > 0);
D.assert(maxLength == null || maxLength > 0);
this.controller = controller;
}
public TextFormField(
Key key = null,
TextEditingController controller = null,
string initialValue = null,
FocusNode focusNode = null,
InputDecoration decoration = null,
TextInputType keyboardType = null,
TextCapitalization textCapitalization = TextCapitalization.none,
TextInputAction?textInputAction = null,
TextStyle style = null,
StrutStyle strutStyle = null,
TextDirection?textDirection = null,
TextAlign textAlign = TextAlign.left,
TextAlignVertical textAlignVertical = null,
bool autofocus = false,
bool readOnly = false,
ToolbarOptions toolbarOptions = null,
bool?showCursor = null,
bool obscureText = false,
bool autocorrect = true,
SmartDashesType?smartDashesType = null,
SmartQuotesType?smartQuotesType = null,
bool enableSuggestions = true,
bool autovalidate = false,
bool maxLengthEnforced = true,
int?maxLines = 1,
int?minLines = null,
bool expands = false,
int?maxLength = null,
ValueChanged <string> onChanged = null,
GestureTapCallback onTap = null,
VoidCallback onEditingComplete = null,
ValueChanged <string> onFieldSubmitted = null,
FormFieldSetter <string> onSaved = null,
FormFieldValidator <string> validator = null,
List <TextInputFormatter> inputFormatters = null,
bool enabled = true,
float cursorWidth = 2.0f,
Radius cursorRadius = null,
Color cursorColor = null,
Brightness?keyboardAppearance = null,
EdgeInsets scrollPadding = null,
bool enableInteractiveSelection = true,
InputCounterWidgetBuilder buildCounter = null,
ScrollPhysics scrollPhysics = null
) : base(
key: key,
initialValue: controller != null ? controller.text : (initialValue ?? ""),
onSaved: onSaved,
validator: validator,
autovalidate: autovalidate,
enabled: enabled,
builder: (FormFieldState <string> field) => {
_TextFormFieldState state = (_TextFormFieldState)field;
InputDecoration effectiveDecoration = (decoration ?? new InputDecoration())
.applyDefaults(Theme.of(field.context).inputDecorationTheme);
void onChangedHandler(string value)
{
if (onChanged != null)
{
onChanged(value);
}
field.didChange(value);
}
return(new TextField(
controller: state._effectiveController,
focusNode: focusNode,
decoration: effectiveDecoration.copyWith(errorText: field.errorText),
keyboardType: keyboardType,
textInputAction: textInputAction,
style: style,
strutStyle: strutStyle,
textAlign: textAlign,
textAlignVertical: textAlignVertical,
textDirection: textDirection ?? TextDirection.ltr,
textCapitalization: textCapitalization,
autofocus: autofocus,
toolbarOptions: toolbarOptions,
readOnly: readOnly,
showCursor: showCursor,
obscureText: obscureText,
autocorrect: autocorrect,
smartDashesType: smartDashesType ??
(obscureText ? SmartDashesType.disabled : SmartDashesType.enabled),
smartQuotesType: smartQuotesType ??
(obscureText ? SmartQuotesType.disabled : SmartQuotesType.enabled),
enableSuggestions: enableSuggestions,
maxLengthEnforced: maxLengthEnforced,
maxLines: maxLines,
minLines: minLines,
expands: expands,
maxLength: maxLength,
onChanged: onChangedHandler,
onTap: onTap,
onEditingComplete: onEditingComplete,
onSubmitted: onFieldSubmitted,
inputFormatters: inputFormatters,
enabled: enabled,
cursorWidth: cursorWidth,
cursorRadius: cursorRadius,
cursorColor: cursorColor,
scrollPadding: scrollPadding ?? EdgeInsets.all(20.0f),
scrollPhysics: scrollPhysics,
keyboardAppearance: keyboardAppearance,
enableInteractiveSelection: enableInteractiveSelection,
buildCounter: buildCounter
));
}
) {
D.assert(initialValue == null || controller == null);
D.assert(maxLines > 0);
D.assert(maxLines == null || maxLines > 0);
D.assert(minLines == null || minLines > 0);
D.assert((maxLines == null) || (minLines == null) || (maxLines >= minLines),
() => "minLines can't be greater than maxLines");
D.assert(!expands || (maxLines == null && minLines == null),
() => "minLines and maxLines must be null when expands is true.");
D.assert(!obscureText || maxLines == 1, () => "Obscured fields cannot be multiline.");
D.assert(maxLength == null || maxLength > 0);
this.controller = controller;
}