treeview.js 4.0 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 TreeView from '/ckeditor5/engine/treeview/treeview.js';
  8. import Observer from '/ckeditor5/engine/treeview/observer/observer.js';
  9. import Renderer from '/ckeditor5/engine/treeview/renderer.js';
  10. import Writer from '/ckeditor5/engine/treeview/writer.js';
  11. import DomConverter from '/ckeditor5/engine/treeview/domconverter.js';
  12. import count from '/ckeditor5/utils/count.js';
  13. describe( 'TreeView', () => {
  14. describe( 'constructor', () => {
  15. it( 'should create TreeView with all properties', () => {
  16. const treeView = new TreeView();
  17. expect( count( treeView.domRoots ) ).to.equal( 0 );
  18. expect( count( treeView.viewRoots ) ).to.equal( 0 );
  19. expect( count( treeView._observers ) ).to.equal( 0 );
  20. expect( treeView ).to.have.property( 'renderer' ).that.is.instanceOf( Renderer );
  21. expect( treeView ).to.have.property( 'writer' ).that.is.instanceOf( Writer );
  22. expect( treeView ).to.have.property( 'domConverter' ).that.is.instanceOf( DomConverter );
  23. } );
  24. } );
  25. describe( 'createRoot', () => {
  26. it( 'should create root', () => {
  27. const domP = document.createElement( 'p' );
  28. const domDiv = document.createElement( 'div' );
  29. domDiv.setAttribute( 'id', 'editor' );
  30. domDiv.appendChild( domP );
  31. const treeView = new TreeView();
  32. const ret = treeView.createRoot( domDiv, 'editor' );
  33. expect( count( treeView.domRoots ) ).to.equal( 1 );
  34. expect( count( treeView.viewRoots ) ).to.equal( 1 );
  35. const domRoot = treeView.domRoots.get( 'editor' );
  36. const viewRoot = treeView.viewRoots.get( 'editor' );
  37. expect( ret ).to.equal( viewRoot );
  38. expect( domRoot ).to.equal( domDiv );
  39. expect( treeView.domConverter.getCorrespondingDom( viewRoot ) ).to.equal( domDiv );
  40. expect( viewRoot.name ).to.equal( 'div' );
  41. expect( viewRoot.getAttribute( 'id' ) ).to.equal( 'editor' );
  42. expect( treeView.renderer.markedChildren.has( viewRoot ) ).to.be.true;
  43. } );
  44. } );
  45. describe( 'addObserver', () => {
  46. let ObserverMock, treeView;
  47. beforeEach( () => {
  48. ObserverMock = class extends Observer {
  49. constructor( treeView ) {
  50. super( treeView );
  51. this.enable = sinon.spy();
  52. this.disable = sinon.spy();
  53. }
  54. };
  55. treeView = new TreeView( document.createElement( 'div' ) );
  56. treeView.renderer.render = sinon.spy();
  57. } );
  58. it( 'should be instantiated and enabled on adding', () => {
  59. treeView.addObserver( ObserverMock );
  60. expect( treeView._observers.size ).to.equal( 1 );
  61. const observerMock = Array.from( treeView._observers )[ 0 ];
  62. expect( observerMock ).to.have.property( 'treeView', treeView );
  63. sinon.assert.calledOnce( observerMock.enable );
  64. } );
  65. it( 'should instantiate one observer only once', () => {
  66. let instantiated = 0;
  67. let enabled = 0;
  68. class ObserverMock2 extends Observer {
  69. constructor( treeView ) {
  70. super( treeView );
  71. instantiated++;
  72. }
  73. enable() {
  74. enabled++;
  75. }
  76. }
  77. treeView.addObserver( ObserverMock2 );
  78. treeView.addObserver( ObserverMock2 );
  79. expect( treeView._observers.size ).to.equal( 1 );
  80. expect( instantiated ).to.equal( 1 );
  81. expect( enabled ).to.equal( 1 );
  82. treeView.addObserver( ObserverMock );
  83. expect( treeView._observers.size ).to.equal( 2 );
  84. } );
  85. it( 'should instantiate child class of already registered observer', () => {
  86. class ObserverMock extends Observer {
  87. enable() {}
  88. }
  89. class ChildObserverMock extends ObserverMock {
  90. enable() {}
  91. }
  92. treeView.addObserver( ObserverMock );
  93. treeView.addObserver( ChildObserverMock );
  94. expect( treeView._observers.size ).to.equal( 2 );
  95. } );
  96. it( 'should be disabled and re-enabled on render', () => {
  97. treeView.addObserver( ObserverMock );
  98. treeView.render();
  99. const observerMock = Array.from( treeView._observers )[ 0 ];
  100. sinon.assert.calledOnce( observerMock.disable );
  101. sinon.assert.calledOnce( treeView.renderer.render );
  102. sinon.assert.calledTwice( observerMock.enable );
  103. } );
  104. } );
  105. } );