domeventobserver.js 3.4 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 ClickObserver 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. class MultiObserver extends DomEventObserver {
  19. constructor( treeView ) {
  20. super( treeView );
  21. this.domEventType = [ 'evt1', 'evt2' ];
  22. }
  23. onDomEvent( domEvt ) {
  24. this.fire( domEvt.type );
  25. }
  26. }
  27. describe( 'DomEventObserver', () => {
  28. let treeView;
  29. beforeEach( () => {
  30. treeView = new TreeView();
  31. } );
  32. it( 'should add event listener', () => {
  33. const domElement = document.createElement( 'p' );
  34. const domEvent = new MouseEvent( 'click' );
  35. const evtSpy = sinon.spy();
  36. treeView.createRoot( domElement, 'root' );
  37. treeView.addObserver( ClickObserver );
  38. treeView.on( 'click', evtSpy );
  39. domElement.dispatchEvent( domEvent );
  40. expect( evtSpy.calledOnce ).to.be.true;
  41. expect( evtSpy.args[ 0 ][ 1 ] ).to.equal( 'foo' );
  42. expect( evtSpy.args[ 0 ][ 2 ] ).to.equal( domEvent );
  43. } );
  44. it( 'should add multiple event listeners', () => {
  45. const domElement = document.createElement( 'p' );
  46. const domEvent1 = new MouseEvent( 'evt1' );
  47. const domEvent2 = new MouseEvent( 'evt2' );
  48. const evtSpy1 = sinon.spy();
  49. const evtSpy2 = sinon.spy();
  50. treeView.createRoot( domElement, 'root' );
  51. treeView.addObserver( MultiObserver );
  52. treeView.on( 'evt1', evtSpy1 );
  53. treeView.on( 'evt2', evtSpy2 );
  54. domElement.dispatchEvent( domEvent1 );
  55. expect( evtSpy1.calledOnce ).to.be.true;
  56. domElement.dispatchEvent( domEvent2 );
  57. expect( evtSpy2.calledOnce ).to.be.true;
  58. } );
  59. it( 'should not fire event if observer is disabled', () => {
  60. const domElement = document.createElement( 'p' );
  61. const domEvent = new MouseEvent( 'click' );
  62. const evtSpy = sinon.spy();
  63. treeView.createRoot( domElement, 'root' );
  64. treeView.addObserver( ClickObserver );
  65. treeView.on( 'click', evtSpy );
  66. const testObserver = Array.from( treeView._observers )[ 0 ];
  67. testObserver.disable();
  68. domElement.dispatchEvent( domEvent );
  69. expect( evtSpy.called ).to.be.false;
  70. } );
  71. it( 'should fire event if observer is disabled and re-enabled', () => {
  72. const domElement = document.createElement( 'p' );
  73. const domEvent = new MouseEvent( 'click' );
  74. const treeView = new TreeView();
  75. const evtSpy = sinon.spy();
  76. treeView.createRoot( domElement, 'root' );
  77. treeView.addObserver( ClickObserver );
  78. treeView.on( 'click', evtSpy );
  79. const testObserver = Array.from( treeView._observers )[ 0 ];
  80. testObserver.disable();
  81. domElement.dispatchEvent( domEvent );
  82. expect( evtSpy.called ).to.be.false;
  83. testObserver.enable();
  84. domElement.dispatchEvent( domEvent );
  85. expect( evtSpy.calledOnce ).to.be.true;
  86. } );
  87. describe( 'fire', () => {
  88. it( 'should do nothing if observer is disabled', () => {
  89. const testObserver = new ClickObserver( treeView );
  90. const fireSpy = sinon.spy( treeView, 'fire' );
  91. testObserver.disable();
  92. testObserver.fire( 'click' );
  93. expect( fireSpy.called ).to.be.false;
  94. testObserver.enable();
  95. testObserver.fire( 'click' );
  96. expect( fireSpy.calledOnce ).to.be.true;
  97. } );
  98. } );
  99. } );