stickytoolbarview.js 11 KB

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  1. /**
  2. * @license Copyright (c) 2003-2017, CKSource - Frederico Knabben. All rights reserved.
  3. * For licensing, see LICENSE.md.
  4. */
  5. /* globals document */
  6. import global from '@ckeditor/ckeditor5-utils/src/dom/global';
  7. import testUtils from '@ckeditor/ckeditor5-core/tests/_utils/utils';
  8. import StickyToolbarView from '../../../src/toolbar/sticky/stickytoolbarview';
  9. import ToolbarView from '../../../src/toolbar/toolbarview';
  10. import DomEmitterMixin from '@ckeditor/ckeditor5-utils/src/dom/emittermixin';
  11. testUtils.createSinonSandbox();
  12. describe( 'StickyToolbarView', () => {
  13. let view, element, limiterElement, locale, windowStub;
  14. beforeEach( () => {
  15. locale = {};
  16. limiterElement = document.createElement( 'div' );
  17. view = new StickyToolbarView( locale );
  18. element = view.element;
  19. // Dummy values just to let non–geometrical tests pass without reference errors.
  20. view._toolbarRect = { top: 10, right: 20, bottom: 30, left: 40, width: 50, height: 60 };
  21. view._limiterRect = { top: 5, right: 10, bottom: 15, left: 20, width: 25, height: 30 };
  22. windowStub = Object.create( DomEmitterMixin );
  23. Object.assign( windowStub, {
  24. scrollX: 0,
  25. scrollY: 0
  26. } );
  27. testUtils.sinon.stub( global, 'window', windowStub );
  28. document.body.appendChild( element );
  29. } );
  30. describe( 'constructor()', () => {
  31. it( 'inherits from ToolbarView', () => {
  32. expect( view ).to.be.instanceof( ToolbarView );
  33. } );
  34. it( 'sets view attributes', () => {
  35. expect( view.isSticky ).to.be.false;
  36. expect( view.limiterElement ).to.be.null;
  37. expect( view.limiterOffset ).to.equal( 50 );
  38. expect( view._isStickyToTheLimiter ).to.be.false;
  39. expect( view._marginLeft ).to.be.null;
  40. } );
  41. it( 'accepts the locale', () => {
  42. expect( view.locale ).to.equal( locale );
  43. } );
  44. it( 'creates the _elementPlaceholder', () => {
  45. expect( view._elementPlaceholder.classList.contains( 'ck-toolbar__placeholder' ) ).to.be.true;
  46. } );
  47. } );
  48. describe( 'element view bindings', () => {
  49. beforeEach( () => {
  50. view.limiterElement = limiterElement;
  51. } );
  52. it( 'update the class on view#isSticky change', () => {
  53. view.isSticky = false;
  54. expect( element.classList.contains( 'ck-toolbar_sticky' ) ).to.be.false;
  55. view.isSticky = true;
  56. expect( element.classList.contains( 'ck-toolbar_sticky' ) ).to.be.true;
  57. } );
  58. it( 'update the class on view#_isStickyToTheLimiter change', () => {
  59. view._isStickyToTheLimiter = false;
  60. expect( element.classList.contains( 'ck-toolbar_sticky_bottom-limit' ) ).to.be.false;
  61. view._isStickyToTheLimiter = true;
  62. expect( element.classList.contains( 'ck-toolbar_sticky_bottom-limit' ) ).to.be.true;
  63. } );
  64. it( 'update the styles.width on view#isSticky change', () => {
  65. testUtils.sinon.stub( view._elementPlaceholder, 'getBoundingClientRect' ).returns( { width: 100 } );
  66. view.isSticky = false;
  67. expect( element.style.width ).to.equal( '' );
  68. view.isSticky = true;
  69. expect( element.style.width ).to.equal( '100px' );
  70. } );
  71. it( 'update the styles.bottom on view#_isStickyToTheLimiter change', () => {
  72. view._isStickyToTheLimiter = false;
  73. expect( element.style.bottom ).to.equal( '' );
  74. view._isStickyToTheLimiter = true;
  75. expect( element.style.bottom ).to.equal( '50px' );
  76. } );
  77. it( 'update the styles.marginLeft on view#marginLeft change', () => {
  78. view._marginLeft = '30px';
  79. expect( element.style.marginLeft ).to.equal( '30px' );
  80. view._marginLeft = '10px';
  81. expect( element.style.marginLeft ).to.equal( '10px' );
  82. } );
  83. } );
  84. describe( '_elementPlaceholder view bindings', () => {
  85. it( 'update the styles.display on view#isSticky change', () => {
  86. view.isSticky = false;
  87. expect( view._elementPlaceholder.style.display ).to.equal( 'none' );
  88. view.isSticky = true;
  89. expect( view._elementPlaceholder.style.display ).to.equal( 'block' );
  90. } );
  91. it( 'update the styles.height on view#isSticky change', () => {
  92. view._toolbarRect = { height: 50 };
  93. view.isSticky = false;
  94. expect( view._elementPlaceholder.style.height ).to.equal( '' );
  95. view.isSticky = true;
  96. expect( view._elementPlaceholder.style.height ).to.equal( '50px' );
  97. } );
  98. } );
  99. describe( 'init()', () => {
  100. beforeEach( () => {
  101. view.limiterElement = limiterElement;
  102. } );
  103. afterEach( () => {
  104. return view.destroy();
  105. } );
  106. it( 'calls init on parent class', () => {
  107. const spy = testUtils.sinon.spy( ToolbarView.prototype, 'init' );
  108. view.init();
  109. expect( spy.calledOnce ).to.be.true;
  110. } );
  111. it( 'puts the view._elementPlaceholder before view.element', () => {
  112. view.init();
  113. expect( element.previousSibling ).to.equal( view._elementPlaceholder );
  114. } );
  115. it( 'listens to window#scroll event and calls view._checkIfShouldBeSticky', () => {
  116. const spy = testUtils.sinon.spy( view, '_checkIfShouldBeSticky' );
  117. view.init();
  118. global.window.fire( 'scroll' );
  119. expect( spy.calledOnce ).to.be.true;
  120. } );
  121. it( 'listens to view.isActive and calls view._checkIfShouldBeSticky', () => {
  122. const spy = testUtils.sinon.spy( view, '_checkIfShouldBeSticky' );
  123. expect( spy.notCalled ).to.be.true;
  124. view.init();
  125. view.isActive = true;
  126. expect( spy.calledOnce ).to.be.true;
  127. view.isActive = false;
  128. expect( spy.calledTwice ).to.be.true;
  129. } );
  130. } );
  131. describe( 'destroy()', () => {
  132. it( 'can be called multiple times', () => {
  133. expect( () => {
  134. view.destroy();
  135. view.destroy();
  136. } ).to.not.throw();
  137. } );
  138. it( 'calls destroy on parent class', () => {
  139. const spy = testUtils.sinon.spy( ToolbarView.prototype, 'destroy' );
  140. view.destroy();
  141. expect( spy.calledOnce ).to.be.true;
  142. } );
  143. it( 'removes view._elementPlaceholder from DOM', () => {
  144. view.destroy();
  145. expect( view._elementPlaceholder.parentNode ).to.be.null;
  146. } );
  147. } );
  148. describe( '_checkIfShouldBeSticky', () => {
  149. beforeEach( () => {
  150. view.limiterElement = limiterElement;
  151. } );
  152. describe( 'view.isSticky', () => {
  153. beforeEach( () => {
  154. testUtils.sinon.stub( view.element, 'getBoundingClientRect' ).returns( {
  155. height: 20
  156. } );
  157. } );
  158. it( 'is true if beyond the top of the viewport (toolbar is active)', () => {
  159. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( { top: -10, height: 100 } );
  160. view.isActive = true;
  161. expect( view.isSticky ).to.be.false;
  162. view._checkIfShouldBeSticky();
  163. expect( view.isSticky ).to.be.true;
  164. } );
  165. it( 'is false if beyond the top of the viewport (toolbar is inactive)', () => {
  166. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( { top: -10, height: 100 } );
  167. view.isActive = false;
  168. expect( view.isSticky ).to.be.false;
  169. view._checkIfShouldBeSticky();
  170. expect( view.isSticky ).to.be.false;
  171. } );
  172. it( 'is false if in the viewport (toolbar is active)', () => {
  173. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( { top: 10, height: 100 } );
  174. view.isActive = true;
  175. expect( view.isSticky ).to.be.false;
  176. view._checkIfShouldBeSticky();
  177. expect( view.isSticky ).to.be.false;
  178. } );
  179. it( 'is false if view.limiterElement is smaller than the toolbar and view.limiterOffset (toolbar is active)', () => {
  180. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( { top: -10, height: 60 } );
  181. view.isActive = true;
  182. view.limiterOffset = 50;
  183. expect( view.isSticky ).to.be.false;
  184. view._checkIfShouldBeSticky();
  185. expect( view.isSticky ).to.be.false;
  186. } );
  187. } );
  188. describe( 'view._isStickyToTheLimiter', () => {
  189. it( 'is true if view.isSticky is true and reached the bottom edge of view.limiterElement', () => {
  190. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( {
  191. top: -10,
  192. bottom: 10,
  193. height: 100
  194. } );
  195. testUtils.sinon.stub( view.element, 'getBoundingClientRect' ).returns( {
  196. height: 20
  197. } );
  198. view.isActive = true;
  199. expect( view.isSticky ).to.be.false;
  200. expect( view._isStickyToTheLimiter ).to.be.false;
  201. view._checkIfShouldBeSticky();
  202. expect( view.isSticky ).to.be.true;
  203. expect( view._isStickyToTheLimiter ).to.be.true;
  204. } );
  205. it( 'is false if view.isSticky is true and not reached the bottom edge of view.limiterElement', () => {
  206. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( {
  207. top: -10,
  208. bottom: 90,
  209. height: 100
  210. } );
  211. testUtils.sinon.stub( view.element, 'getBoundingClientRect' ).returns( {
  212. height: 20
  213. } );
  214. view.isActive = true;
  215. expect( view.isSticky ).to.be.false;
  216. expect( view._isStickyToTheLimiter ).to.be.false;
  217. view._checkIfShouldBeSticky();
  218. expect( view.isSticky ).to.be.true;
  219. expect( view._isStickyToTheLimiter ).to.be.false;
  220. } );
  221. it( 'is false if view.isSticky is false', () => {
  222. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( {
  223. top: 10,
  224. } );
  225. view.isActive = true;
  226. expect( view.isSticky ).to.be.false;
  227. expect( view._isStickyToTheLimiter ).to.be.false;
  228. view._checkIfShouldBeSticky();
  229. expect( view.isSticky ).to.be.false;
  230. expect( view._isStickyToTheLimiter ).to.be.false;
  231. } );
  232. } );
  233. describe( 'view._marginLeft', () => {
  234. it( 'is set if view.isSticky is true view._isStickyToTheLimiter is false', () => {
  235. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( {
  236. top: -10,
  237. bottom: 80,
  238. height: 100
  239. } );
  240. testUtils.sinon.stub( view.element, 'getBoundingClientRect' ).returns( {
  241. height: 20
  242. } );
  243. Object.assign( windowStub, {
  244. scrollX: 10,
  245. scrollY: 0
  246. } );
  247. view.isActive = true;
  248. expect( view.isSticky ).to.be.false;
  249. expect( view._isStickyToTheLimiter ).to.be.false;
  250. expect( view._marginLeft ).to.equal( null );
  251. view._checkIfShouldBeSticky();
  252. expect( view.isSticky ).to.be.true;
  253. expect( view._isStickyToTheLimiter ).to.be.false;
  254. expect( view._marginLeft ).to.equal( '-10px' );
  255. } );
  256. it( 'is not set if view._isStickyToTheLimiter is true', () => {
  257. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( {
  258. top: -10,
  259. bottom: 10,
  260. left: 60,
  261. height: 100
  262. } );
  263. testUtils.sinon.stub( view.element, 'getBoundingClientRect' ).returns( {
  264. height: 20
  265. } );
  266. testUtils.sinon.stub( document.body, 'getBoundingClientRect' ).returns( {
  267. left: 40
  268. } );
  269. view.isActive = true;
  270. expect( view.isSticky ).to.be.false;
  271. expect( view._isStickyToTheLimiter ).to.be.false;
  272. expect( view._marginLeft ).to.equal( null );
  273. view._checkIfShouldBeSticky();
  274. expect( view.isSticky ).to.be.true;
  275. expect( view._isStickyToTheLimiter ).to.be.true;
  276. expect( view._marginLeft ).to.equal( null );
  277. } );
  278. it( 'is not set if view.isSticky is false', () => {
  279. testUtils.sinon.stub( view.limiterElement, 'getBoundingClientRect' ).returns( {
  280. top: 10,
  281. } );
  282. view.isActive = true;
  283. expect( view.isSticky ).to.be.false;
  284. expect( view._isStickyToTheLimiter ).to.be.false;
  285. expect( view._marginLeft ).to.equal( null );
  286. view._checkIfShouldBeSticky();
  287. expect( view.isSticky ).to.be.false;
  288. expect( view._isStickyToTheLimiter ).to.be.false;
  289. expect( view._marginLeft ).to.equal( null );
  290. } );
  291. } );
  292. } );
  293. } );