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fix: 修复BrnStepInputFormItem更新值时设置非法的TextSelection导致光标错位的问题 Close #235 #239

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merged 1 commit into from
Jun 16, 2022
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fix: 修复BrnStepInputFormItem更新值时设置非法的TextSelection导致光标错位的问题 Close #235 #239

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13 changes: 9 additions & 4 deletions lib/src/components/form/items/general/brn_step_input_item.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -315,7 +315,11 @@ class BrnStepInputFormItemState extends State<BrnStepInputFormItem> {
int get _value => int.tryParse(_textEditingController.text) ?? 0;

set _value(int value) {
_textEditingController.text = value.toString();
// 如果是通过代码设置TextField的值，就将光标移动到最后
_textEditingController.value = TextEditingValue(
text: value.toString(),
selection: TextSelection.fromPosition(
TextPosition(offset: value.toString().length)));
}
}

Expand All @@ -328,10 +332,11 @@ class RangeLimitedTextInputFormatter extends TextInputFormatter {
@override
TextEditingValue formatEditUpdate(TextEditingValue oldValue, TextEditingValue newValue) {
int? newNum = int.tryParse(newValue.text);
if(newNum == null && minValue == 0) {
return TextEditingValue(text: '');
if (newNum == null && minValue == 0) {
return const TextEditingValue(
text: '', selection: TextSelection.collapsed(offset: 0));
} else if (newNum != null && minValue <= newNum && newNum <= maxValue) {
return TextEditingValue(text: newNum.toString());
return newValue;
} else {
return oldValue;
}
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