applyRedaction method

Future<void> applyRedaction(CPDFRedactAnnotation annotation)

Permanently applies a single redaction annotation.

The annotation must have been read from CPDFPage.getAnnotations so its native CPDFAnnotation.uuid can be resolved. A successfully applied annotation is removed and the supplied object must not be reused.

Throws ArgumentError when the annotation does not identify a native redaction. Native application failures are reported as PlatformException.

Implementation

Future<void> applyRedaction(CPDFRedactAnnotation annotation) async {
  //TODO: iOS 端应用密文存在问题 redmine(https://pms.kdan.cc/issues/31668)
  if (annotation.uuid.isEmpty) {
    throw ArgumentError.value(
      annotation.uuid,
      'annotation.uuid',
      'A native redaction UUID is required.',
    );
  }
  if (annotation.page < 0) {
    throw ArgumentError.value(
      annotation.page,
      'annotation.page',
      'The page index must not be negative.',
    );
  }
  await _channel.invokeMethod<void>('apply_redaction', {
    'page_index': annotation.page,
    'uuid': annotation.uuid,
  });
}