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domeventobserver.js 2.6 KB

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  1. /**
  2. * @license Copyright (c) 2003-2015, CKSource - Frederico Knabben. All rights reserved.
  3. * For licensing, see LICENSE.md.
  4. */
  5. /* bender-tags: treeview */
  6. 'use strict';
  7. import DomEventObserver from '/ckeditor5/core/treeview/observer/domeventobserver.js';
  8. import TreeView from '/ckeditor5/core/treeview/treeview.js';
  9. class TestObserver extends DomEventObserver {
  10. constructor( treeView ) {
  11. super( treeView );
  12. this.domEventType = 'click';
  13. }
  14. onDomEvent( domEvt ) {
  15. this.fire( 'click', 'foo', domEvt );
  16. }
  17. }
  18. describe( 'DomEventObserver', () => {
  19. let treeView;
  20. beforeEach( () => {
  21. treeView = new TreeView();
  22. } );
  23. it( 'should add event listener', () => {
  24. const domElement = document.createElement( 'p' );
  25. const domEvent = new MouseEvent( 'click' );
  26. const evtSpy = sinon.spy();
  27. treeView.createRoot( domElement, 'root' );
  28. treeView.addObserver( TestObserver );
  29. treeView.on( 'click', evtSpy );
  30. domElement.dispatchEvent( domEvent );
  31. expect( evtSpy.calledOnce ).to.be.true;
  32. expect( evtSpy.args[ 0 ][ 1 ] ).to.equal( 'foo' );
  33. expect( evtSpy.args[ 0 ][ 2 ] ).to.equal( domEvent );
  34. } );
  35. it( 'should not fire event if observer is disabled', () => {
  36. const domElement = document.createElement( 'p' );
  37. const domEvent = new MouseEvent( 'click' );
  38. const evtSpy = sinon.spy();
  39. treeView.createRoot( domElement, 'root' );
  40. treeView.addObserver( TestObserver );
  41. treeView.on( 'click', evtSpy );
  42. const testObserver = Array.from( treeView._observers )[ 0 ];
  43. testObserver.disable();
  44. domElement.dispatchEvent( domEvent );
  45. expect( evtSpy.called ).to.be.false;
  46. } );
  47. it( 'should fire event if observer is disabled and re-enabled', () => {
  48. const domElement = document.createElement( 'p' );
  49. const domEvent = new MouseEvent( 'click' );
  50. const treeView = new TreeView();
  51. const evtSpy = sinon.spy();
  52. treeView.createRoot( domElement, 'root' );
  53. treeView.addObserver( TestObserver );
  54. treeView.on( 'click', evtSpy );
  55. const testObserver = Array.from( treeView._observers )[ 0 ];
  56. testObserver.disable();
  57. domElement.dispatchEvent( domEvent );
  58. expect( evtSpy.called ).to.be.false;
  59. testObserver.enable();
  60. domElement.dispatchEvent( domEvent );
  61. expect( evtSpy.calledOnce ).to.be.true;
  62. } );
  63. describe( 'fire', () => {
  64. it( 'should do nothing if observer is disabled', () => {
  65. const testObserver = new TestObserver( treeView );
  66. const fireSpy = sinon.spy( treeView, 'fire' );
  67. testObserver.disable();
  68. testObserver.fire( 'click' );
  69. expect( fireSpy.called ).to.be.false;
  70. testObserver.enable();
  71. testObserver.fire( 'click' );
  72. expect( fireSpy.calledOnce ).to.be.true;
  73. } );
  74. } );
  75. } );