8
0

removeoperation.js 1.3 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051
  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. * Remove operation cannot be applied on element that is not inside the document
  22. * so this will always be a document operation.
  23. *
  24. * @member {Boolean}
  25. */
  26. get isDocumentOperation() {
  27. return true;
  28. }
  29. /**
  30. * See {@link module:engine/model/operation/operation~Operation#getReversed `Operation#getReversed()`}.
  31. *
  32. * @returns {module:engine/model/operation/reinsertoperation~ReinsertOperation|module:engine/model/operation/nooperation~NoOperation}
  33. */
  34. getReversed() {
  35. const newTargetPosition = this.sourcePosition._getTransformedByInsertion( this.targetPosition, this.howMany );
  36. return new ReinsertOperation( this.getMovedRangeStart(), this.howMany, newTargetPosition, this.baseVersion + 1 );
  37. }
  38. /**
  39. * @inheritDoc
  40. */
  41. static get className() {
  42. return 'engine.model.operation.RemoveOperation';
  43. }
  44. }