view.js 27 KB

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  1. /**
  2. * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
  3. * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
  4. */
  5. /* globals document */
  6. import View from '../../../src/view/view';
  7. import Observer from '../../../src/view/observer/observer';
  8. import MutationObserver from '../../../src/view/observer/mutationobserver';
  9. import KeyObserver from '../../../src/view/observer/keyobserver';
  10. import InputObserver from '../../../src/view/observer/inputobserver';
  11. import FakeSelectionObserver from '../../../src/view/observer/fakeselectionobserver';
  12. import SelectionObserver from '../../../src/view/observer/selectionobserver';
  13. import FocusObserver from '../../../src/view/observer/focusobserver';
  14. import CompositionObserver from '../../../src/view/observer/compositionobserver';
  15. import ViewRange from '../../../src/view/range';
  16. import ViewElement from '../../../src/view/element';
  17. import ViewPosition from '../../../src/view/position';
  18. import ViewSelection from '../../../src/view/selection';
  19. import { isBlockFiller, BR_FILLER } from '../../../src/view/filler';
  20. import log from '@ckeditor/ckeditor5-utils/src/log';
  21. import count from '@ckeditor/ckeditor5-utils/src/count';
  22. import global from '@ckeditor/ckeditor5-utils/src/dom/global';
  23. import createViewRoot from '../_utils/createroot';
  24. import createElement from '@ckeditor/ckeditor5-utils/src/dom/createelement';
  25. import testUtils from '@ckeditor/ckeditor5-core/tests/_utils/utils';
  26. import { expectToThrowCKEditorError } from '@ckeditor/ckeditor5-utils/tests/_utils/utils';
  27. import env from '@ckeditor/ckeditor5-utils/src/env';
  28. describe( 'view', () => {
  29. const DEFAULT_OBSERVERS_COUNT = 6;
  30. let domRoot, view, viewDocument, ObserverMock, instantiated, enabled, ObserverMockGlobalCount;
  31. testUtils.createSinonSandbox();
  32. beforeEach( () => {
  33. domRoot = createElement( document, 'div', {
  34. id: 'editor',
  35. contenteditable: 'true'
  36. } );
  37. document.body.appendChild( domRoot );
  38. view = new View();
  39. viewDocument = view.document;
  40. ObserverMock = class extends Observer {
  41. constructor( view ) {
  42. super( view );
  43. this.enable = sinon.spy();
  44. this.disable = sinon.spy();
  45. this.observe = sinon.spy();
  46. this.destroy = sinon.spy();
  47. }
  48. };
  49. instantiated = 0;
  50. enabled = 0;
  51. ObserverMockGlobalCount = class extends Observer {
  52. constructor( view ) {
  53. super( view );
  54. instantiated++;
  55. this.observe = sinon.spy();
  56. }
  57. enable() {
  58. enabled++;
  59. }
  60. };
  61. } );
  62. afterEach( () => {
  63. domRoot.remove();
  64. view.destroy();
  65. } );
  66. it( 'should add default observers', () => {
  67. expect( count( view._observers ) ).to.equal( DEFAULT_OBSERVERS_COUNT );
  68. expect( view.getObserver( MutationObserver ) ).to.be.instanceof( MutationObserver );
  69. expect( view.getObserver( SelectionObserver ) ).to.be.instanceof( SelectionObserver );
  70. expect( view.getObserver( FocusObserver ) ).to.be.instanceof( FocusObserver );
  71. expect( view.getObserver( KeyObserver ) ).to.be.instanceof( KeyObserver );
  72. expect( view.getObserver( FakeSelectionObserver ) ).to.be.instanceof( FakeSelectionObserver );
  73. expect( view.getObserver( CompositionObserver ) ).to.be.instanceof( CompositionObserver );
  74. } );
  75. it( 'should add InputObserver on Android devices', () => {
  76. const oldEnvIsAndroid = env.isAndroid;
  77. env.isAndroid = true;
  78. const newView = new View();
  79. expect( newView.getObserver( InputObserver ) ).to.be.instanceof( InputObserver );
  80. env.isAndroid = oldEnvIsAndroid;
  81. newView.destroy();
  82. } );
  83. describe( 'attachDomRoot()', () => {
  84. it( 'should attach DOM element to main view element', () => {
  85. const domDiv = document.createElement( 'div' );
  86. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  87. expect( count( view.domRoots ) ).to.equal( 0 );
  88. view.attachDomRoot( domDiv );
  89. expect( count( view.domRoots ) ).to.equal( 1 );
  90. expect( view.getDomRoot() ).to.equal( domDiv );
  91. expect( view.domConverter.mapViewToDom( viewRoot ) ).to.equal( domDiv );
  92. expect( view._renderer.markedChildren.has( viewRoot ) ).to.be.true;
  93. domDiv.remove();
  94. } );
  95. it( 'should attach DOM element to custom view element', () => {
  96. const domH1 = document.createElement( 'h1' );
  97. const viewH1 = createViewRoot( viewDocument, 'h1', 'header' );
  98. expect( count( view.domRoots ) ).to.equal( 0 );
  99. view.attachDomRoot( domH1, 'header' );
  100. expect( count( view.domRoots ) ).to.equal( 1 );
  101. expect( view.getDomRoot( 'header' ) ).to.equal( domH1 );
  102. expect( view.domConverter.mapViewToDom( viewH1 ) ).to.equal( domH1 );
  103. expect( view._renderer.markedChildren.has( viewH1 ) ).to.be.true;
  104. } );
  105. it( 'should handle the "contenteditable" attribute management on #isReadOnly change', () => {
  106. const domDiv = document.createElement( 'div' );
  107. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  108. view.attachDomRoot( domDiv );
  109. viewRoot.isReadOnly = false;
  110. expect( viewRoot.getAttribute( 'contenteditable' ) ).to.equal( 'true' );
  111. viewRoot.isReadOnly = true;
  112. expect( viewRoot.getAttribute( 'contenteditable' ) ).to.equal( 'false' );
  113. } );
  114. it( 'should handle the ".ck-read-only" class management on #isReadOnly change', () => {
  115. const domDiv = document.createElement( 'div' );
  116. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  117. view.attachDomRoot( domDiv );
  118. viewRoot.isReadOnly = false;
  119. expect( viewRoot.hasClass( 'ck-read-only' ) ).to.be.false;
  120. viewRoot.isReadOnly = true;
  121. expect( viewRoot.hasClass( 'ck-read-only' ) ).to.be.true;
  122. } );
  123. it( 'should call observe on each observer', () => {
  124. // The variable will be overwritten.
  125. view.destroy();
  126. view = new View();
  127. viewDocument = view.document;
  128. view._renderer.render = sinon.spy();
  129. const domDiv1 = document.createElement( 'div' );
  130. domDiv1.setAttribute( 'id', 'editor' );
  131. const domDiv2 = document.createElement( 'div' );
  132. domDiv2.setAttribute( 'id', 'editor' );
  133. const observerMock = view.addObserver( ObserverMock );
  134. const observerMockGlobalCount = view.addObserver( ObserverMockGlobalCount );
  135. createViewRoot( viewDocument, 'div', 'root1' );
  136. view.attachDomRoot( document.createElement( 'div' ), 'root1' );
  137. sinon.assert.calledOnce( observerMock.observe );
  138. sinon.assert.calledOnce( observerMockGlobalCount.observe );
  139. } );
  140. } );
  141. describe( 'detachDomRoot()', () => {
  142. it( 'should remove DOM root and unbind DOM element', () => {
  143. const domDiv = document.createElement( 'div' );
  144. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  145. view.attachDomRoot( domDiv );
  146. expect( count( view.domRoots ) ).to.equal( 1 );
  147. expect( view.domConverter.mapViewToDom( viewRoot ) ).to.equal( domDiv );
  148. view.detachDomRoot( 'main' );
  149. expect( count( view.domRoots ) ).to.equal( 0 );
  150. expect( view.domConverter.mapViewToDom( viewRoot ) ).to.be.undefined;
  151. domDiv.remove();
  152. } );
  153. it( 'should restore the DOM root attributes to the state before attachDomRoot()', () => {
  154. const domDiv = document.createElement( 'div' );
  155. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  156. domDiv.setAttribute( 'foo', 'bar' );
  157. domDiv.setAttribute( 'data-baz', 'qux' );
  158. domDiv.classList.add( 'foo-class' );
  159. view.attachDomRoot( domDiv );
  160. view.change( writer => {
  161. writer.addClass( 'addedClass', viewRoot );
  162. writer.setAttribute( 'added-attribute', 'foo', viewRoot );
  163. writer.setAttribute( 'foo', 'changed the value', viewRoot );
  164. } );
  165. view.detachDomRoot( 'main' );
  166. const attributes = {};
  167. for ( const attribute of Array.from( domDiv.attributes ) ) {
  168. attributes[ attribute.name ] = attribute.value;
  169. }
  170. expect( attributes ).to.deep.equal( {
  171. foo: 'bar',
  172. 'data-baz': 'qux',
  173. class: 'foo-class'
  174. } );
  175. domDiv.remove();
  176. } );
  177. it( 'should remove the "contenteditable" attribute from the DOM root', () => {
  178. const domDiv = document.createElement( 'div' );
  179. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  180. view.attachDomRoot( domDiv );
  181. view.forceRender();
  182. viewRoot.isReadOnly = false;
  183. expect( domDiv.getAttribute( 'contenteditable' ) ).to.equal( 'true' );
  184. view.detachDomRoot( 'main' );
  185. expect( domDiv.hasAttribute( 'contenteditable' ) ).to.be.false;
  186. domDiv.remove();
  187. } );
  188. it( 'should remove the ".ck-read-only" class from the DOM root', () => {
  189. const domDiv = document.createElement( 'div' );
  190. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  191. view.attachDomRoot( domDiv );
  192. view.forceRender();
  193. viewRoot.isReadOnly = true;
  194. expect( domDiv.classList.contains( 'ck-read-only' ) ).to.be.true;
  195. view.detachDomRoot( 'main' );
  196. expect( domDiv.classList.contains( 'ck-read-only' ) ).to.be.false;
  197. domDiv.remove();
  198. } );
  199. } );
  200. describe( 'addObserver()', () => {
  201. beforeEach( () => {
  202. // The variable will be overwritten.
  203. view.destroy();
  204. view = new View();
  205. viewDocument = view.document;
  206. view._renderer.render = sinon.spy();
  207. } );
  208. afterEach( () => {
  209. view.destroy();
  210. } );
  211. it( 'should be instantiated and enabled on adding', () => {
  212. const observerMock = view.addObserver( ObserverMock );
  213. expect( view._observers.size ).to.equal( DEFAULT_OBSERVERS_COUNT + 1 );
  214. expect( observerMock ).to.have.property( 'document', viewDocument );
  215. sinon.assert.calledOnce( observerMock.enable );
  216. } );
  217. it( 'should return observer instance each time addObserver is called', () => {
  218. const observerMock1 = view.addObserver( ObserverMock );
  219. const observerMock2 = view.addObserver( ObserverMock );
  220. expect( observerMock1 ).to.be.instanceof( ObserverMock );
  221. expect( observerMock2 ).to.be.instanceof( ObserverMock );
  222. expect( observerMock1 ).to.equals( observerMock2 );
  223. } );
  224. it( 'should instantiate one observer only once', () => {
  225. view.addObserver( ObserverMockGlobalCount );
  226. view.addObserver( ObserverMockGlobalCount );
  227. expect( view._observers.size ).to.equal( DEFAULT_OBSERVERS_COUNT + 1 );
  228. expect( instantiated ).to.equal( 1 );
  229. expect( enabled ).to.equal( 1 );
  230. view.addObserver( ObserverMock );
  231. expect( view._observers.size ).to.equal( DEFAULT_OBSERVERS_COUNT + 2 );
  232. } );
  233. it( 'should instantiate child class of already registered observer', () => {
  234. class ObserverMock extends Observer {
  235. enable() {}
  236. }
  237. class ChildObserverMock extends ObserverMock {
  238. enable() {}
  239. }
  240. view.addObserver( ObserverMock );
  241. view.addObserver( ChildObserverMock );
  242. expect( view._observers.size ).to.equal( DEFAULT_OBSERVERS_COUNT + 2 );
  243. } );
  244. it( 'should be disabled and re-enabled on render', () => {
  245. const observerMock = view.addObserver( ObserverMock );
  246. view.forceRender();
  247. sinon.assert.calledOnce( observerMock.disable );
  248. sinon.assert.calledOnce( view._renderer.render );
  249. sinon.assert.calledTwice( observerMock.enable );
  250. } );
  251. it( 'should call observe on each root', () => {
  252. createViewRoot( viewDocument, 'div', 'roo1' );
  253. createViewRoot( viewDocument, 'div', 'roo2' );
  254. view.attachDomRoot( document.createElement( 'div' ), 'roo1' );
  255. view.attachDomRoot( document.createElement( 'div' ), 'roo2' );
  256. const observerMock = view.addObserver( ObserverMock );
  257. sinon.assert.calledTwice( observerMock.observe );
  258. } );
  259. } );
  260. describe( 'getObserver()', () => {
  261. it( 'should return observer it it is added', () => {
  262. const addedObserverMock = view.addObserver( ObserverMock );
  263. const getObserverMock = view.getObserver( ObserverMock );
  264. expect( getObserverMock ).to.be.instanceof( ObserverMock );
  265. expect( getObserverMock ).to.equal( addedObserverMock );
  266. } );
  267. it( 'should return undefined if observer is not added', () => {
  268. const getObserverMock = view.getObserver( ObserverMock );
  269. expect( getObserverMock ).to.be.undefined;
  270. } );
  271. } );
  272. describe( 'scrollToTheSelection()', () => {
  273. beforeEach( () => {
  274. // Silence the Rect warnings.
  275. testUtils.sinon.stub( log, 'warn' );
  276. } );
  277. it( 'does nothing when there are no ranges in the selection', () => {
  278. const stub = testUtils.sinon.stub( global.window, 'scrollTo' );
  279. view.scrollToTheSelection();
  280. sinon.assert.notCalled( stub );
  281. } );
  282. it( 'scrolls to the first range in selection with an offset', () => {
  283. const root = createViewRoot( viewDocument, 'div', 'main' );
  284. const stub = testUtils.sinon.stub( global.window, 'scrollTo' );
  285. const range = ViewRange._createIn( root );
  286. view.attachDomRoot( domRoot );
  287. view.change( writer => {
  288. writer.setSelection( range );
  289. } );
  290. // Make sure the window will have to scroll to the domRoot.
  291. Object.assign( domRoot.style, {
  292. position: 'absolute',
  293. top: '-1000px',
  294. left: '-1000px'
  295. } );
  296. view.scrollToTheSelection();
  297. sinon.assert.calledWithMatch( stub, sinon.match.number, sinon.match.number );
  298. } );
  299. } );
  300. describe( 'disableObservers()', () => {
  301. it( 'should disable observers', () => {
  302. const addedObserverMock = view.addObserver( ObserverMock );
  303. expect( addedObserverMock.enable.calledOnce ).to.be.true;
  304. expect( addedObserverMock.disable.called ).to.be.false;
  305. view.disableObservers();
  306. expect( addedObserverMock.enable.calledOnce ).to.be.true;
  307. expect( addedObserverMock.disable.calledOnce ).to.be.true;
  308. } );
  309. } );
  310. describe( 'enableObservers()', () => {
  311. it( 'should enable observers', () => {
  312. const addedObserverMock = view.addObserver( ObserverMock );
  313. view.disableObservers();
  314. expect( addedObserverMock.enable.calledOnce ).to.be.true;
  315. expect( addedObserverMock.disable.calledOnce ).to.be.true;
  316. view.enableObservers();
  317. expect( addedObserverMock.enable.calledTwice ).to.be.true;
  318. expect( addedObserverMock.disable.calledOnce ).to.be.true;
  319. } );
  320. } );
  321. describe( 'focus()', () => {
  322. let domEditable, viewEditable;
  323. beforeEach( () => {
  324. domEditable = document.createElement( 'div' );
  325. domEditable.setAttribute( 'contenteditable', 'true' );
  326. document.body.appendChild( domEditable );
  327. viewEditable = createViewRoot( viewDocument, 'div', 'main' );
  328. view.attachDomRoot( domEditable );
  329. view.change( writer => {
  330. writer.setSelection( viewEditable, 0 );
  331. } );
  332. } );
  333. afterEach( () => {
  334. document.body.removeChild( domEditable );
  335. } );
  336. it( 'should focus editable with selection', () => {
  337. const converterFocusSpy = testUtils.sinon.spy( view.domConverter, 'focus' );
  338. const renderSpy = testUtils.sinon.spy( view, 'forceRender' );
  339. view.focus();
  340. expect( converterFocusSpy.called ).to.be.true;
  341. expect( renderSpy.calledOnce ).to.be.true;
  342. expect( document.activeElement ).to.equal( domEditable );
  343. const domSelection = document.getSelection();
  344. expect( domSelection.rangeCount ).to.equal( 1 );
  345. const domRange = domSelection.getRangeAt( 0 );
  346. expect( domRange.startContainer ).to.equal( domEditable );
  347. expect( domRange.startOffset ).to.equal( 0 );
  348. expect( domRange.collapsed ).to.be.true;
  349. } );
  350. it( 'should not focus if document is already focused', () => {
  351. const converterFocusSpy = testUtils.sinon.spy( view.domConverter, 'focus' );
  352. const renderSpy = testUtils.sinon.spy( view, 'forceRender' );
  353. viewDocument.isFocused = true;
  354. view.focus();
  355. expect( converterFocusSpy.called ).to.be.false;
  356. expect( renderSpy.called ).to.be.false;
  357. } );
  358. it( 'should log warning when no selection', () => {
  359. const logSpy = testUtils.sinon.stub( log, 'warn' );
  360. view.change( writer => {
  361. writer.setSelection( null );
  362. } );
  363. view.focus();
  364. expect( logSpy.calledOnce ).to.be.true;
  365. expect( logSpy.args[ 0 ][ 0 ] ).to.match( /^view-focus-no-selection/ );
  366. } );
  367. } );
  368. describe( 'isFocused', () => {
  369. it( 'should change renderer.isFocused too', () => {
  370. expect( viewDocument.isFocused ).to.equal( false );
  371. expect( view._renderer.isFocused ).to.equal( false );
  372. viewDocument.isFocused = true;
  373. expect( viewDocument.isFocused ).to.equal( true );
  374. expect( view._renderer.isFocused ).to.equal( true );
  375. } );
  376. } );
  377. describe( 'isRenderingInProgress', () => {
  378. it( 'should be true while rendering is in progress', () => {
  379. expect( view.isRenderingInProgress ).to.equal( false );
  380. const spy = sinon.spy();
  381. view.on( 'change:isRenderingInProgress', spy );
  382. view.fire( 'render' );
  383. sinon.assert.calledTwice( spy );
  384. sinon.assert.calledWith( spy.firstCall, sinon.match.any, 'isRenderingInProgress', true );
  385. sinon.assert.calledWith( spy.secondCall, sinon.match.any, 'isRenderingInProgress', false );
  386. } );
  387. } );
  388. describe( 'forceRender()', () => {
  389. it( 'disable observers, renders and enable observers', () => {
  390. const observerMock = view.addObserver( ObserverMock );
  391. const renderStub = sinon.stub( view._renderer, 'render' );
  392. view.forceRender();
  393. sinon.assert.callOrder( observerMock.disable, renderStub, observerMock.enable );
  394. } );
  395. it( 'should fire `render` and `layoutChanged` even if there were no changes', () => {
  396. const renderSpy = sinon.spy();
  397. const layoutChangedSpy = sinon.spy();
  398. view.on( 'render', renderSpy );
  399. view.document.on( 'layoutChanged', layoutChangedSpy );
  400. view.forceRender();
  401. sinon.assert.calledOnce( renderSpy );
  402. sinon.assert.calledOnce( layoutChangedSpy );
  403. } );
  404. it( 'should fire `render` and `layoutChanged` if there is some buffered change', () => {
  405. const renderSpy = sinon.spy();
  406. const layoutChangedSpy = sinon.spy();
  407. view.on( 'render', renderSpy );
  408. view.document.on( 'layoutChanged', layoutChangedSpy );
  409. view.document.selection._setTo( null );
  410. view.forceRender();
  411. sinon.assert.calledOnce( renderSpy );
  412. sinon.assert.calledOnce( layoutChangedSpy );
  413. } );
  414. } );
  415. describe( 'view and DOM integration', () => {
  416. it( 'should remove content of the DOM', () => {
  417. const domDiv = createElement( document, 'div', { id: 'editor' }, [
  418. createElement( document, 'p' ),
  419. createElement( document, 'p' )
  420. ] );
  421. const view = new View();
  422. const viewDocument = view.document;
  423. createViewRoot( viewDocument, 'div', 'main' );
  424. view.attachDomRoot( domDiv );
  425. view.forceRender();
  426. expect( domDiv.childNodes.length ).to.equal( 1 );
  427. expect( isBlockFiller( domDiv.childNodes[ 0 ], BR_FILLER ) ).to.be.true;
  428. view.destroy();
  429. domDiv.remove();
  430. } );
  431. it( 'should render changes in the Document', () => {
  432. const domDiv = document.createElement( 'div' );
  433. const view = new View();
  434. const viewDocument = view.document;
  435. createViewRoot( viewDocument, 'div', 'main' );
  436. view.attachDomRoot( domDiv );
  437. viewDocument.getRoot()._appendChild( new ViewElement( 'p' ) );
  438. view.forceRender();
  439. expect( domDiv.childNodes.length ).to.equal( 1 );
  440. expect( domDiv.childNodes[ 0 ].tagName ).to.equal( 'P' );
  441. view.destroy();
  442. } );
  443. it( 'should render attribute changes', () => {
  444. const domRoot = document.createElement( 'div' );
  445. const view = new View();
  446. const viewDocument = view.document;
  447. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  448. view.attachDomRoot( domRoot );
  449. const viewP = new ViewElement( 'p', { class: 'foo' } );
  450. viewRoot._appendChild( viewP );
  451. view.forceRender();
  452. expect( domRoot.childNodes.length ).to.equal( 1 );
  453. expect( domRoot.childNodes[ 0 ].getAttribute( 'class' ) ).to.equal( 'foo' );
  454. viewP._setAttribute( 'class', 'bar' );
  455. view.forceRender();
  456. expect( domRoot.childNodes.length ).to.equal( 1 );
  457. expect( domRoot.childNodes[ 0 ].getAttribute( 'class' ) ).to.equal( 'bar' );
  458. view.destroy();
  459. domRoot.remove();
  460. } );
  461. } );
  462. describe( 'change()', () => {
  463. it( 'should throw when someone tries to change view during rendering', () => {
  464. const domDiv = document.createElement( 'div' );
  465. const viewRoot = createViewRoot( viewDocument, 'div', 'main' );
  466. let renderingCalled = false;
  467. view.attachDomRoot( domDiv );
  468. view.change( writer => {
  469. const p = writer.createContainerElement( 'p' );
  470. const ui = writer.createUIElement( 'span', null, function( domDocument ) {
  471. const element = this.toDomElement( domDocument );
  472. expectToThrowCKEditorError( () => {
  473. view.change( () => {} );
  474. }, /^cannot-change-view-tree/, view );
  475. renderingCalled = true;
  476. return element;
  477. } );
  478. writer.insert( ViewPosition._createAt( p, 0 ), ui );
  479. writer.insert( ViewPosition._createAt( viewRoot, 0 ), p );
  480. } );
  481. expect( renderingCalled ).to.be.true;
  482. domDiv.remove();
  483. } );
  484. it( 'should throw when someone tries to use change() method in post-fixer', () => {
  485. const domDiv = document.createElement( 'div' );
  486. createViewRoot( viewDocument, 'div', 'main' );
  487. view.attachDomRoot( domDiv );
  488. viewDocument.registerPostFixer( () => {
  489. expectToThrowCKEditorError( () => {
  490. view.change( () => {} );
  491. }, /^cannot-change-view-tree/, view );
  492. } );
  493. view.forceRender();
  494. domDiv.remove();
  495. } );
  496. it( 'should fire render event and it should trigger rendering before listeners on normal priority', () => {
  497. const renderSpy = sinon.spy( view._renderer, 'render' );
  498. const eventSpy = sinon.spy();
  499. view.on( 'render', eventSpy );
  500. view.change( writer => {
  501. writer.setSelection( null );
  502. } );
  503. sinon.assert.callOrder( renderSpy, eventSpy );
  504. } );
  505. it( 'should fire render event once for nested change blocks', () => {
  506. const renderSpy = sinon.spy( view._renderer, 'render' );
  507. const eventSpy = sinon.spy();
  508. const viewEditable = createViewRoot( viewDocument, 'div', 'main' );
  509. view.on( 'render', eventSpy );
  510. view.change( writer => {
  511. writer.setSelection( null );
  512. view.change( writer => {
  513. writer.setSelection( viewEditable, 0 );
  514. } );
  515. view.change( writer => {
  516. writer.setSelection( null );
  517. view.change( writer => {
  518. writer.setSelection( viewEditable, 0 );
  519. } );
  520. } );
  521. view.change( writer => {
  522. writer.setSelection( null );
  523. } );
  524. } );
  525. sinon.assert.calledOnce( renderSpy );
  526. sinon.assert.calledOnce( eventSpy );
  527. sinon.assert.callOrder( renderSpy, eventSpy );
  528. } );
  529. it( 'should fire render event once even if render is called during the change', () => {
  530. const renderSpy = sinon.spy( view._renderer, 'render' );
  531. const eventSpy = sinon.spy();
  532. view.on( 'render', eventSpy );
  533. view.change( () => {
  534. view.forceRender();
  535. view.change( writer => {
  536. writer.setSelection( null );
  537. view.forceRender();
  538. } );
  539. view.forceRender();
  540. } );
  541. sinon.assert.calledOnce( renderSpy );
  542. sinon.assert.calledOnce( eventSpy );
  543. sinon.assert.callOrder( renderSpy, eventSpy );
  544. } );
  545. it( 'should call post-fixers after change but before rendering', () => {
  546. const postFixer1 = sinon.spy( () => false );
  547. const postFixer2 = sinon.spy( () => false );
  548. const changeSpy = sinon.spy();
  549. const eventSpy = sinon.spy();
  550. viewDocument.registerPostFixer( postFixer1 );
  551. viewDocument.registerPostFixer( postFixer2 );
  552. view.on( 'render', eventSpy );
  553. view.change( writer => {
  554. changeSpy();
  555. writer.setSelection( null );
  556. } );
  557. sinon.assert.calledOnce( postFixer1 );
  558. sinon.assert.calledOnce( postFixer2 );
  559. sinon.assert.calledOnce( changeSpy );
  560. sinon.assert.calledOnce( eventSpy );
  561. sinon.assert.callOrder( changeSpy, postFixer1, postFixer2, eventSpy );
  562. } );
  563. it( 'should call post-fixers until all are done', () => {
  564. let called = false;
  565. const postFixer1 = sinon.spy();
  566. const postFixer2 = sinon.spy();
  567. const changeSpy = sinon.spy();
  568. const eventSpy = sinon.spy();
  569. viewDocument.registerPostFixer( () => {
  570. if ( !called ) {
  571. called = true;
  572. postFixer1();
  573. return true;
  574. }
  575. postFixer2();
  576. return false;
  577. } );
  578. view.on( 'render', eventSpy );
  579. view.change( writer => {
  580. changeSpy();
  581. writer.setSelection( null );
  582. } );
  583. sinon.assert.calledOnce( postFixer1 );
  584. sinon.assert.calledOnce( postFixer2 );
  585. sinon.assert.calledOnce( changeSpy );
  586. sinon.assert.calledOnce( eventSpy );
  587. sinon.assert.callOrder( changeSpy, postFixer1, postFixer2, eventSpy );
  588. } );
  589. it( 'should return result of the callback', () => {
  590. const result = view.change( () => {
  591. return 'FooBar';
  592. } );
  593. expect( result ).to.equal( 'FooBar' );
  594. } );
  595. it( 'should return result of the callback with nested change block', () => {
  596. let result2 = false;
  597. let result3 = false;
  598. const result1 = view.change( () => {
  599. return view.change( () => {
  600. result2 = view.change( () => {
  601. return true;
  602. } );
  603. result3 = view.change( () => {} );
  604. return 42;
  605. } );
  606. } );
  607. expect( result1 ).to.equal( 42 );
  608. expect( result2 ).to.equal( true );
  609. expect( result3 ).to.undefined;
  610. } );
  611. } );
  612. describe( 'createPositionAt()', () => {
  613. it( 'should return instance of Position', () => {
  614. createViewRoot( viewDocument, 'div', 'main' );
  615. viewDocument.getRoot()._appendChild( new ViewElement( 'p' ) );
  616. expect( view.createPositionAt( viewDocument.getRoot(), 0 ) ).to.be.instanceof( ViewPosition );
  617. } );
  618. } );
  619. describe( 'createPositionAfter()', () => {
  620. it( 'should return instance of Position', () => {
  621. createViewRoot( viewDocument, 'div', 'main' );
  622. viewDocument.getRoot()._appendChild( new ViewElement( 'p' ) );
  623. expect( view.createPositionAfter( viewDocument.getRoot().getChild( 0 ) ) ).to.be.instanceof( ViewPosition );
  624. } );
  625. } );
  626. describe( 'createPositionBefore()', () => {
  627. it( 'should return instance of Position', () => {
  628. createViewRoot( viewDocument, 'div', 'main' );
  629. viewDocument.getRoot()._appendChild( new ViewElement( 'p' ) );
  630. expect( view.createPositionBefore( viewDocument.getRoot().getChild( 0 ) ) ).to.be.instanceof( ViewPosition );
  631. } );
  632. } );
  633. describe( 'createRange()', () => {
  634. it( 'should return instance of Range', () => {
  635. createViewRoot( viewDocument, 'div', 'main' );
  636. viewDocument.getRoot()._appendChild( new ViewElement( 'p' ) );
  637. expect( view.createRange( view.createPositionAt( viewDocument.getRoot(), 0 ) ) ).to.be.instanceof( ViewRange );
  638. } );
  639. } );
  640. describe( 'createRangeIn()', () => {
  641. it( 'should return instance of Range', () => {
  642. createViewRoot( viewDocument, 'div', 'main' );
  643. viewDocument.getRoot()._appendChild( new ViewElement( 'p' ) );
  644. expect( view.createRangeIn( viewDocument.getRoot().getChild( 0 ) ) ).to.be.instanceof( ViewRange );
  645. } );
  646. } );
  647. describe( 'createRangeOn()', () => {
  648. it( 'should return instance of Range', () => {
  649. createViewRoot( viewDocument, 'div', 'main' );
  650. viewDocument.getRoot()._appendChild( new ViewElement( 'p' ) );
  651. expect( view.createRangeOn( viewDocument.getRoot().getChild( 0 ) ) ).to.be.instanceof( ViewRange );
  652. } );
  653. } );
  654. describe( 'createSelection()', () => {
  655. it( 'should return instance of Selection', () => {
  656. createViewRoot( viewDocument, 'div', 'main' );
  657. viewDocument.getRoot()._appendChild( new ViewElement( 'p' ) );
  658. expect( view.createSelection() ).to.be.instanceof( ViewSelection );
  659. } );
  660. } );
  661. describe( 'destroy()', () => {
  662. it( 'should destroy all observers', () => {
  663. const observerMock = view.addObserver( ObserverMock );
  664. view.destroy();
  665. sinon.assert.calledOnce( observerMock.destroy );
  666. } );
  667. } );
  668. } );