domeventobserver.js 3.8 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. /* globals MouseEvent, document */
  6. /* bender-tags: view, browser-only */
  7. import DomEventObserver from 'ckeditor5/engine/view/observer/domeventobserver.js';
  8. import Observer from 'ckeditor5/engine/view/observer/observer.js';
  9. import ViewDocument from 'ckeditor5/engine/view/document.js';
  10. class ClickObserver extends DomEventObserver {
  11. constructor( document ) {
  12. super( document );
  13. this.domEventType = 'click';
  14. }
  15. onDomEvent( domEvt ) {
  16. this.fire( 'click', domEvt, { foo: 1, bar: 2 } );
  17. }
  18. }
  19. class MultiObserver extends DomEventObserver {
  20. constructor( document ) {
  21. super( document );
  22. this.domEventType = [ 'evt1', 'evt2' ];
  23. }
  24. onDomEvent( domEvt ) {
  25. this.fire( domEvt.type, domEvt );
  26. }
  27. }
  28. describe( 'DomEventObserver', () => {
  29. let viewDocument;
  30. beforeEach( () => {
  31. viewDocument = new ViewDocument();
  32. } );
  33. describe( 'constructor()', () => {
  34. it( 'should create Observer with properties', () => {
  35. const observer = new DomEventObserver( viewDocument );
  36. expect( observer ).to.be.an.instanceof( Observer );
  37. } );
  38. } );
  39. it( 'should add event listener', () => {
  40. const domElement = document.createElement( 'p' );
  41. const domEvent = new MouseEvent( 'click' );
  42. const evtSpy = sinon.spy();
  43. viewDocument.createRoot( domElement, 'root' );
  44. viewDocument.addObserver( ClickObserver );
  45. viewDocument.on( 'click', evtSpy );
  46. domElement.dispatchEvent( domEvent );
  47. expect( evtSpy.calledOnce ).to.be.true;
  48. const data = evtSpy.args[ 0 ][ 1 ];
  49. expect( data ).to.have.property( 'foo', 1 );
  50. expect( data ).to.have.property( 'bar', 2 );
  51. expect( data ).to.have.property( 'domEvent', domEvent );
  52. } );
  53. it( 'should add multiple event listeners', () => {
  54. const domElement = document.createElement( 'p' );
  55. const domEvent1 = new MouseEvent( 'evt1' );
  56. const domEvent2 = new MouseEvent( 'evt2' );
  57. const evtSpy1 = sinon.spy();
  58. const evtSpy2 = sinon.spy();
  59. viewDocument.createRoot( domElement, 'root' );
  60. viewDocument.addObserver( MultiObserver );
  61. viewDocument.on( 'evt1', evtSpy1 );
  62. viewDocument.on( 'evt2', evtSpy2 );
  63. domElement.dispatchEvent( domEvent1 );
  64. expect( evtSpy1.calledOnce ).to.be.true;
  65. domElement.dispatchEvent( domEvent2 );
  66. expect( evtSpy2.calledOnce ).to.be.true;
  67. } );
  68. it( 'should not fire event if observer is disabled', () => {
  69. const domElement = document.createElement( 'p' );
  70. const domEvent = new MouseEvent( 'click' );
  71. const evtSpy = sinon.spy();
  72. viewDocument.createRoot( domElement, 'root' );
  73. const testObserver = viewDocument.addObserver( ClickObserver );
  74. viewDocument.on( 'click', evtSpy );
  75. testObserver.disable();
  76. domElement.dispatchEvent( domEvent );
  77. expect( evtSpy.called ).to.be.false;
  78. } );
  79. it( 'should fire event if observer is disabled and re-enabled', () => {
  80. const domElement = document.createElement( 'p' );
  81. const domEvent = new MouseEvent( 'click' );
  82. const viewDocument = new ViewDocument();
  83. const evtSpy = sinon.spy();
  84. viewDocument.createRoot( domElement, 'root' );
  85. const testObserver = viewDocument.addObserver( ClickObserver );
  86. viewDocument.on( 'click', evtSpy );
  87. testObserver.disable();
  88. domElement.dispatchEvent( domEvent );
  89. expect( evtSpy.called ).to.be.false;
  90. testObserver.enable();
  91. domElement.dispatchEvent( domEvent );
  92. expect( evtSpy.calledOnce ).to.be.true;
  93. } );
  94. describe( 'fire', () => {
  95. it( 'should do nothing if observer is disabled', () => {
  96. const testObserver = new ClickObserver( viewDocument );
  97. const fireSpy = sinon.spy( viewDocument, 'fire' );
  98. testObserver.disable();
  99. testObserver.fire( 'click', {} );
  100. expect( fireSpy.called ).to.be.false;
  101. testObserver.enable();
  102. testObserver.fire( 'click', {} );
  103. expect( fireSpy.calledOnce ).to.be.true;
  104. } );
  105. } );
  106. } );