removeoperation.js 1.0 KB

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  1. /**
  2. * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
  3. * For licensing, see LICENSE.md.
  4. */
  5. /**
  6. * @module engine/model/operation/removeoperation
  7. */
  8. import MoveOperation from './moveoperation';
  9. import ReinsertOperation from './reinsertoperation';
  10. /**
  11. * Operation to remove a range of nodes.
  12. */
  13. export default class RemoveOperation extends MoveOperation {
  14. /**
  15. * @inheritDoc
  16. */
  17. get type() {
  18. return 'remove';
  19. }
  20. /**
  21. * See {@link module:engine/model/operation/operation~Operation#getReversed `Operation#getReversed()`}.
  22. *
  23. * @returns {module:engine/model/operation/reinsertoperation~ReinsertOperation|module:engine/model/operation/nooperation~NoOperation}
  24. */
  25. getReversed() {
  26. const newTargetPosition = this.sourcePosition._getTransformedByInsertion( this.targetPosition, this.howMany );
  27. return new ReinsertOperation( this.getMovedRangeStart(), this.howMany, newTargetPosition, this.baseVersion + 1 );
  28. }
  29. /**
  30. * @inheritDoc
  31. */
  32. static get className() {
  33. return 'engine.model.operation.RemoveOperation';
  34. }
  35. }