domeventobserver.js 2.9 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 Observer from '/ckeditor5/core/treeview/observer/observer.js';
  9. import TreeView from '/ckeditor5/core/treeview/treeview.js';
  10. class TestObserver extends DomEventObserver {
  11. constructor( treeView ) {
  12. super( treeView );
  13. this.domEventType = 'click';
  14. }
  15. onDomEvent( domEvt ) {
  16. this.fire( 'click', 'foo', domEvt );
  17. }
  18. }
  19. describe( 'DomEventObserver', () => {
  20. let treeView;
  21. beforeEach( () => {
  22. treeView = new TreeView();
  23. } );
  24. describe( 'constructor', () => {
  25. it( 'should create Observer with properties', () => {
  26. const observer = new DomEventObserver( treeView );
  27. expect( observer ).to.be.an.instanceof( Observer );
  28. } );
  29. } );
  30. it( 'should add event listener', () => {
  31. const domElement = document.createElement( 'p' );
  32. const domEvent = new MouseEvent( 'click' );
  33. const evtSpy = sinon.spy();
  34. treeView.createRoot( domElement, 'root' );
  35. treeView.addObserver( TestObserver );
  36. treeView.on( 'click', evtSpy );
  37. domElement.dispatchEvent( domEvent );
  38. expect( evtSpy.calledOnce ).to.be.true;
  39. expect( evtSpy.args[ 0 ][ 1 ] ).to.equal( 'foo' );
  40. expect( evtSpy.args[ 0 ][ 2 ] ).to.equal( domEvent );
  41. } );
  42. it( 'should not fire event if observer is disabled', () => {
  43. const domElement = document.createElement( 'p' );
  44. const domEvent = new MouseEvent( 'click' );
  45. const evtSpy = sinon.spy();
  46. treeView.createRoot( domElement, 'root' );
  47. treeView.addObserver( TestObserver );
  48. treeView.on( 'click', evtSpy );
  49. const testObserver = Array.from( treeView._observers )[ 0 ];
  50. testObserver.disable();
  51. domElement.dispatchEvent( domEvent );
  52. expect( evtSpy.called ).to.be.false;
  53. } );
  54. it( 'should fire event if observer is disabled and re-enabled', () => {
  55. const domElement = document.createElement( 'p' );
  56. const domEvent = new MouseEvent( 'click' );
  57. const treeView = new TreeView();
  58. const evtSpy = sinon.spy();
  59. treeView.createRoot( domElement, 'root' );
  60. treeView.addObserver( TestObserver );
  61. treeView.on( 'click', evtSpy );
  62. const testObserver = Array.from( treeView._observers )[ 0 ];
  63. testObserver.disable();
  64. domElement.dispatchEvent( domEvent );
  65. expect( evtSpy.called ).to.be.false;
  66. testObserver.enable();
  67. domElement.dispatchEvent( domEvent );
  68. expect( evtSpy.calledOnce ).to.be.true;
  69. } );
  70. describe( 'fire', () => {
  71. it( 'should do nothing if observer is disabled', () => {
  72. const testObserver = new TestObserver( treeView );
  73. const fireSpy = sinon.spy( treeView, 'fire' );
  74. testObserver.disable();
  75. testObserver.fire( 'click' );
  76. expect( fireSpy.called ).to.be.false;
  77. testObserver.enable();
  78. testObserver.fire( 'click' );
  79. expect( fireSpy.calledOnce ).to.be.true;
  80. } );
  81. } );
  82. } );