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brachi-wernick/conditionValidation.ts

Created December 28, 2017 17:10
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fire validation changed when input has changed
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conditionValidation.ts
registerOnValidatorChange(fn: () => void): void { this._onChange = fn; }
private _onChange: () => void;
ngOnChanges(changes: SimpleChanges): void {
if ('requiredIf' in changes) {
if (this._onChange) this._onChange();
}
}
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