range.js 25 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. import Range from '../../src/view/range';
  6. import Position from '../../src/view/position';
  7. import Element from '../../src/view/element';
  8. import DocumentFragment from '../../src/view/documentfragment';
  9. import Text from '../../src/view/text';
  10. import TreeWalker from '../../src/view/treewalker';
  11. import { parse, stringify } from '../../src/dev-utils/view';
  12. function getRange( view, options = {} ) {
  13. const { selection } = parse( view, options );
  14. return selection.getFirstRange();
  15. }
  16. describe( 'Range', () => {
  17. describe( 'constructor()', () => {
  18. it( 'creates range from provided positions', () => {
  19. const start = new Position( {}, 1 );
  20. const end = new Position( {}, 2 );
  21. const range = new Range( start, end );
  22. expect( range ).to.be.an.instanceof( Range );
  23. expect( range ).to.have.property( 'start' ).that.not.equals( start );
  24. expect( range ).to.have.property( 'end' ).that.not.equals( end );
  25. expect( range.start.parent ).to.equal( start.parent );
  26. expect( range.end.parent ).to.equal( end.parent );
  27. expect( range.start.offset ).to.equal( start.offset );
  28. expect( range.end.offset ).to.equal( end.offset );
  29. } );
  30. it( 'creates collapsed range', () => {
  31. const start = new Position( {}, 1 );
  32. const range = new Range( start );
  33. expect( range.start.isEqual( start ) ).to.be.true;
  34. expect( range.isCollapsed ).to.be.true;
  35. } );
  36. } );
  37. describe( 'iterator', () => {
  38. it( 'should iterate over the range returning tree walker values', () => {
  39. const range = getRange( '<p>fo{o</p><p>bar</p><p>xy}z</p>' );
  40. const values = Array.from( range );
  41. expect( values.length ).to.equal( 5 );
  42. expect( values[ 0 ].item.data ).to.equal( 'o' );
  43. expect( values[ 1 ].item.name ).to.equal( 'p' );
  44. expect( values[ 2 ].item.data ).to.equal( 'bar' );
  45. expect( values[ 3 ].item.name ).to.equal( 'p' );
  46. expect( values[ 4 ].item.data ).to.equal( 'xy' );
  47. } );
  48. } );
  49. describe( 'isFlat', () => {
  50. it( 'should be true if range start and range end are in same parent', () => {
  51. const range = getRange( '<p>f{oo}</p><p>bar</p>' );
  52. expect( range.isFlat ).to.be.true;
  53. } );
  54. it( 'should be false if range start and range end are in different parents', () => {
  55. const range = getRange( '<p>fo{o</p><p>b}ar</p>' );
  56. expect( range.isFlat ).to.be.false;
  57. } );
  58. } );
  59. describe( 'getRoot', () => {
  60. it( 'should return root element in which range is created', () => {
  61. const viewRoot = new Element( 'div' );
  62. const range = getRange( '<p>f{oo</p><p>ba}r</p>', { rootElement: viewRoot } );
  63. expect( range.root ).to.equal( viewRoot );
  64. } );
  65. it( 'should return document fragment in which range is created', () => {
  66. const viewFrag = new DocumentFragment();
  67. const range = getRange( '<p>f{oo</p><p>ba}r</p>', { rootElement: viewFrag } );
  68. expect( range.root ).to.equal( viewFrag );
  69. } );
  70. } );
  71. describe( 'getEnlarged', () => {
  72. it( 'case 1', () => {
  73. expect( enlarge( '<p>f<b>{oo}</b></p><p>bar</p>' ) )
  74. .to.equal( '<p>f[<b>oo</b>]</p><p>bar</p>' );
  75. } );
  76. it( 'case 2', () => {
  77. expect( enlarge( '<p>f{oo}bar</p>' ) )
  78. .to.equal( '<p>f{oo}bar</p>' );
  79. } );
  80. it( 'case 3', () => {
  81. expect( enlarge( '<p>f<span></span>{oo}<span></span>bar</p>' ) )
  82. .to.equal( '<p>f[<span></span>oo<span></span>]bar</p>' );
  83. } );
  84. it( 'case 4', () => {
  85. expect( enlarge( '<p>f<img></img>{oo}<img></img>bar</p>' ) )
  86. .to.equal( '<p>f<img></img>[oo]<img></img>bar</p>' );
  87. } );
  88. it( 'case 5', () => {
  89. expect( enlarge( '<p><b>f</b>{oo}<b><span></span>bar</b></p>' ) )
  90. .to.equal( '<p><b>f[</b>oo<b><span></span>]bar</b></p>' );
  91. } );
  92. it( 'case6', () => {
  93. expect( enlarge( '<p>foo</p><p>[bar]</p><p>bom</p>' ) )
  94. .to.equal( '<p>foo</p><p>[bar]</p><p>bom</p>' );
  95. } );
  96. function enlarge( data ) {
  97. data = data
  98. .replace( /<p>/g, '<container:p>' )
  99. .replace( /<\/p>/g, '</container:p>' )
  100. .replace( /<b>/g, '<attribute:b>' )
  101. .replace( /<\/b>/g, '</attribute:b>' )
  102. .replace( /<img><\/img>/g, '<empty:img></empty:img>' )
  103. .replace( /<span><\/span>/g, '<ui:span></ui:span>' );
  104. const viewFrag = new DocumentFragment();
  105. const { view, selection } = parse( data, { rootElement: viewFrag } );
  106. const range = selection.getFirstRange();
  107. const enlargedRange = range.getEnlarged();
  108. return stringify( view, enlargedRange );
  109. }
  110. } );
  111. describe( 'getTrimmed', () => {
  112. it( 'case 1', () => {
  113. expect( trim( '<p>f[<b>oo</b>]</p><p>bar</p>' ) )
  114. .to.equal( '<p>f<b>{oo}</b></p><p>bar</p>' );
  115. } );
  116. it( 'case 2', () => {
  117. expect( trim( '<p>f{oo}bar</p>' ) )
  118. .to.equal( '<p>f{oo}bar</p>' );
  119. } );
  120. it( 'case 3', () => {
  121. expect( trim( '<p>f[<span></span>oo<span></span>]bar</p>' ) )
  122. .to.equal( '<p>f<span></span>{oo}<span></span>bar</p>' );
  123. } );
  124. it( 'case 4', () => {
  125. expect( trim( '<p>f<img></img>[oo]<img></img>bar</p>' ) )
  126. .to.equal( '<p>f<img></img>{oo}<img></img>bar</p>' );
  127. } );
  128. it( 'case 5', () => {
  129. expect( trim( '<p><b>f[</b>oo<b><span></span>]bar</b></p>' ) )
  130. .to.equal( '<p><b>f</b>{oo}<b><span></span>bar</b></p>' );
  131. } );
  132. it( 'case6', () => {
  133. expect( trim( '<p>foo[</p><p>bar</p><p>]bom</p>' ) )
  134. .to.equal( '<p>foo[</p><p>bar</p><p>]bom</p>' );
  135. } );
  136. it( 'case7', () => {
  137. expect( trim( '<p>foo[<b><img></img></b>]bom</p>' ) )
  138. .to.equal( '<p>foo<b>[<img></img>]</b>bom</p>' );
  139. } );
  140. it( 'case8', () => {
  141. expect( trim( '<p>[<b></b>]</p>' ) )
  142. .to.equal( '<p><b></b>[]</p>' );
  143. } );
  144. it( 'case9', () => {
  145. expect( trim( '<p><b></b>[<b></b>]<b></b></p>' ) )
  146. .to.equal( '<p><b></b><b></b>[]<b></b></p>' );
  147. } );
  148. function trim( data ) {
  149. data = data
  150. .replace( /<p>/g, '<container:p>' )
  151. .replace( /<\/p>/g, '</container:p>' )
  152. .replace( /<b>/g, '<attribute:b>' )
  153. .replace( /<\/b>/g, '</attribute:b>' )
  154. .replace( /<img><\/img>/g, '<empty:img></empty:img>' )
  155. .replace( /<span><\/span>/g, '<ui:span></ui:span>' );
  156. const viewFrag = new DocumentFragment();
  157. const { view, selection } = parse( data, { rootElement: viewFrag } );
  158. const range = selection.getFirstRange();
  159. const trimmedRange = range.getTrimmed();
  160. return stringify( view, trimmedRange );
  161. }
  162. } );
  163. describe( 'isEqual', () => {
  164. it( 'should return true for the same range', () => {
  165. const start = new Position( {}, 1 );
  166. const end = new Position( {}, 2 );
  167. const range = new Range( start, end );
  168. expect( range.isEqual( range ) ).to.be.true;
  169. } );
  170. it( 'should return true for ranges with same start and end positions', () => {
  171. const start = new Position( {}, 1 );
  172. const end = new Position( {}, 2 );
  173. const range1 = new Range( start, end );
  174. const range2 = new Range( start, end );
  175. expect( range1.isEqual( range2 ) ).to.be.true;
  176. } );
  177. it( 'should return false if start position is different', () => {
  178. const start1 = new Position( {}, 1 );
  179. const start2 = new Position( {}, 1 );
  180. const end = new Position( {}, 2 );
  181. const range1 = new Range( start1, end );
  182. const range2 = new Range( start2, end );
  183. expect( range1.isEqual( range2 ) ).to.be.false;
  184. } );
  185. it( 'should return false if end position is different', () => {
  186. const start = new Position( {}, 1 );
  187. const end1 = new Position( {}, 2 );
  188. const end2 = new Position( {}, 2 );
  189. const range1 = new Range( start, end1 );
  190. const range2 = new Range( start, end2 );
  191. expect( range1.isEqual( range2 ) ).to.be.false;
  192. } );
  193. it( 'should return false for ranges with same root and different offsets', () => {
  194. const mockObject = {};
  195. const range1 = new Range( new Position( mockObject, 0 ), new Position( mockObject, 10 ) );
  196. const range2 = new Range( new Position( mockObject, 2 ), new Position( mockObject, 10 ) );
  197. expect( range1.isEqual( range2 ) ).to.be.false;
  198. } );
  199. } );
  200. describe( 'containsPosition', () => {
  201. let viewRoot, range;
  202. beforeEach( () => {
  203. viewRoot = new Element( 'div' );
  204. range = getRange( '<p>fo{o</p><p>bar</p><p>xy}z</p>', { rootElement: viewRoot } );
  205. } );
  206. it( 'should return false if position is before range', () => {
  207. const position = new Position( viewRoot.getChild( 0 ).getChild( 0 ), 1 ); // After "f".
  208. expect( range.containsPosition( position ) ).to.be.false;
  209. } );
  210. it( 'should return false if position is after range', () => {
  211. const position = new Position( viewRoot.getChild( 2 ).getChild( 0 ), 3 ); // After "z".
  212. expect( range.containsPosition( position ) ).to.be.false;
  213. } );
  214. it( 'should return true if position is inside range', () => {
  215. const position = new Position( viewRoot.getChild( 1 ).getChild( 0 ), 1 ); // After "b".
  216. expect( range.containsPosition( position ) ).to.be.true;
  217. } );
  218. } );
  219. describe( 'containsRange', () => {
  220. let viewRoot, range, beforeF, afterF, beforeB, afterX;
  221. beforeEach( () => {
  222. viewRoot = new Element( 'div' );
  223. range = getRange( '<p>fo{o</p><p>bar</p><p>xy}z</p>', { rootElement: viewRoot } );
  224. beforeF = new Position( viewRoot.getChild( 0 ).getChild( 0 ), 0 );
  225. afterF = new Position( viewRoot.getChild( 0 ).getChild( 0 ), 1 );
  226. beforeB = new Position( viewRoot.getChild( 1 ).getChild( 0 ), 0 );
  227. afterX = new Position( viewRoot.getChild( 2 ).getChild( 0 ), 1 );
  228. } );
  229. it( 'should return false if ranges do not intersect', () => {
  230. const otherRange = new Range( beforeF, afterF );
  231. expect( range.containsRange( otherRange ) ).to.be.false;
  232. } );
  233. it( 'should return false if ranges intersect but only partially', () => {
  234. const otherRange = new Range( afterF, afterX );
  235. expect( range.containsRange( otherRange ) ).to.be.false;
  236. } );
  237. it( 'should return false if ranges are equal', () => {
  238. const otherRange = Range.createFromRange( range );
  239. expect( range.containsRange( otherRange ) ).to.be.false;
  240. } );
  241. it( 'should return true if given range is inside range', () => {
  242. const otherRange = new Range( beforeB, afterX );
  243. expect( range.containsRange( otherRange ) ).to.be.true;
  244. } );
  245. it( 'should return true if ranges are equal and check is not strict', () => {
  246. const otherRange = Range.createFromRange( range );
  247. expect( range.containsRange( otherRange, true ) ).to.be.true;
  248. } );
  249. it( 'should return true if ranges start at the same position and check is not strict', () => {
  250. const otherRange = new Range( range.start, afterX );
  251. expect( range.containsRange( otherRange, true ) ).to.be.true;
  252. } );
  253. it( 'should return true if ranges end at the same position and check is not strict', () => {
  254. const otherRange = new Range( beforeB, range.end );
  255. expect( range.containsRange( otherRange, true ) ).to.be.true;
  256. } );
  257. it( 'should return false if given range is collapsed and starts or ends at another range boundary', () => {
  258. expect( range.containsRange( new Range( range.start, range.start ) ) ).to.be.false;
  259. expect( range.containsRange( new Range( range.end, range.end ) ) ).to.be.false;
  260. expect( range.containsRange( new Range( range.start, range.start ), true ) ).to.be.false;
  261. expect( range.containsRange( new Range( range.end, range.end ), true ) ).to.be.false;
  262. } );
  263. } );
  264. describe( 'other range interaction', () => {
  265. let root, p1, p2, t1, t2, t3;
  266. // root
  267. // __________|__________
  268. // | |
  269. // ___p1___ p2
  270. // | | |
  271. // t1 t2 t3
  272. beforeEach( () => {
  273. t1 = new Text( 'foo' );
  274. t2 = new Text( 'bar' );
  275. t3 = new Text( 'baz' );
  276. p1 = new Element( 'p', null, [ t1, t2 ] );
  277. p2 = new Element( 'p', null, t3 );
  278. root = new Element( 'div', null, [ p1, p2 ] );
  279. } );
  280. describe( 'isIntersecting', () => {
  281. it( 'should return true if given range is equal', () => {
  282. const range = Range.createFromParentsAndOffsets( t1, 0, t3, 2 );
  283. const otherRange = Range.createFromRange( range );
  284. expect( range.isIntersecting( otherRange ) ).to.be.true;
  285. expect( otherRange.isIntersecting( range ) ).to.be.true;
  286. } );
  287. it( 'should return true if given range contains this range', () => {
  288. const range = Range.createFromParentsAndOffsets( t1, 0, t3, 3 );
  289. const otherRange = Range.createFromParentsAndOffsets( p1, 1, t2, 2 );
  290. expect( range.isIntersecting( otherRange ) ).to.be.true;
  291. expect( otherRange.isIntersecting( range ) ).to.be.true;
  292. } );
  293. it( 'should return true if given range ends in this range', () => {
  294. const range = Range.createFromParentsAndOffsets( root, 1, t3, 3 );
  295. const otherRange = Range.createFromParentsAndOffsets( t1, 0, p2, 0 );
  296. expect( range.isIntersecting( otherRange ) ).to.be.true;
  297. expect( otherRange.isIntersecting( range ) ).to.be.true;
  298. } );
  299. it( 'should return true if given range starts in this range', () => {
  300. const range = Range.createFromParentsAndOffsets( t1, 0, t2, 3 );
  301. const otherRange = Range.createFromParentsAndOffsets( p1, 1, p2, 0 );
  302. expect( range.isIntersecting( otherRange ) ).to.be.true;
  303. expect( otherRange.isIntersecting( range ) ).to.be.true;
  304. } );
  305. it( 'should return false if given range is fully before/after this range', () => {
  306. const range = Range.createFromParentsAndOffsets( t1, 0, t2, 3 );
  307. const otherRange = Range.createFromParentsAndOffsets( root, 1, t3, 0 );
  308. expect( range.isIntersecting( otherRange ) ).to.be.false;
  309. expect( otherRange.isIntersecting( range ) ).to.be.false;
  310. } );
  311. it( 'should return false if ranges are in different roots', () => {
  312. const range = Range.createFromParentsAndOffsets( t1, 0, t2, 3 );
  313. const otherRange = Range.createFromParentsAndOffsets( new Element( 'div' ), 1, t3, 0 );
  314. expect( range.isIntersecting( otherRange ) ).to.be.false;
  315. expect( otherRange.isIntersecting( range ) ).to.be.false;
  316. } );
  317. } );
  318. describe( 'getDifference', () => {
  319. it( 'should return range equal to original range if other range does not intersect with it', () => {
  320. const range = Range.createFromParentsAndOffsets( t1, 0, t2, 3 );
  321. const otherRange = Range.createFromParentsAndOffsets( root, 1, t3, 0 );
  322. const difference = range.getDifference( otherRange );
  323. expect( difference.length ).to.equal( 1 );
  324. expect( difference[ 0 ].isEqual( range ) ).to.be.true;
  325. } );
  326. it( 'should return shrunken range if other range intersects with it', () => {
  327. const range = Range.createFromParentsAndOffsets( root, 1, t3, 3 );
  328. const otherRange = Range.createFromParentsAndOffsets( t1, 0, p2, 0 );
  329. const difference = range.getDifference( otherRange );
  330. expect( difference.length ).to.equal( 1 );
  331. expect( difference[ 0 ].start.parent ).to.equal( p2 );
  332. expect( difference[ 0 ].start.offset ).to.equal( 0 );
  333. expect( difference[ 0 ].end.parent ).to.equal( t3 );
  334. expect( difference[ 0 ].end.offset ).to.equal( 3 );
  335. } );
  336. it( 'should return an empty array if other range contains or is same as the original range', () => {
  337. const range = Range.createFromParentsAndOffsets( p1, 1, t2, 2 );
  338. const otherRange = Range.createFromParentsAndOffsets( t1, 0, t3, 3 );
  339. const difference = range.getDifference( otherRange );
  340. expect( difference.length ).to.equal( 0 );
  341. } );
  342. it( 'should two ranges if other range is contained by the original range', () => {
  343. const range = Range.createFromParentsAndOffsets( t1, 0, t3, 3 );
  344. const otherRange = Range.createFromParentsAndOffsets( p1, 1, t2, 2 );
  345. const difference = range.getDifference( otherRange );
  346. expect( difference.length ).to.equal( 2 );
  347. expect( difference[ 0 ].start.parent ).to.equal( t1 );
  348. expect( difference[ 0 ].start.offset ).to.equal( 0 );
  349. expect( difference[ 0 ].end.parent ).to.equal( p1 );
  350. expect( difference[ 0 ].end.offset ).to.equal( 1 );
  351. expect( difference[ 1 ].start.parent ).to.equal( t2 );
  352. expect( difference[ 1 ].start.offset ).to.equal( 2 );
  353. expect( difference[ 1 ].end.parent ).to.equal( t3 );
  354. expect( difference[ 1 ].end.offset ).to.equal( 3 );
  355. } );
  356. } );
  357. describe( 'getIntersection', () => {
  358. it( 'should return range equal to original range if other range contains it', () => {
  359. const range = Range.createFromParentsAndOffsets( t2, 0, t3, 0 );
  360. const otherRange = Range.createFromParentsAndOffsets( t1, 1, t3, 1 );
  361. const intersection = range.getIntersection( otherRange );
  362. expect( intersection.isEqual( range ) ).to.be.true;
  363. } );
  364. it( 'should return range equal to other range if it is contained in original range', () => {
  365. const range = Range.createFromParentsAndOffsets( t1, 1, t3, 1 );
  366. const otherRange = Range.createFromParentsAndOffsets( t2, 0, t3, 0 );
  367. const intersection = range.getIntersection( otherRange );
  368. expect( intersection.isEqual( otherRange ) ).to.be.true;
  369. } );
  370. it( 'should return null if ranges do not intersect', () => {
  371. const range = Range.createFromParentsAndOffsets( t1, 0, t2, 3 );
  372. const otherRange = Range.createFromParentsAndOffsets( t3, 0, t3, 3 );
  373. const intersection = range.getIntersection( otherRange );
  374. expect( intersection ).to.be.null;
  375. } );
  376. it( 'should return common part if ranges intersect partially', () => {
  377. const range = Range.createFromParentsAndOffsets( t1, 0, t2, 3 );
  378. const otherRange = Range.createFromParentsAndOffsets( t2, 0, t3, 3 );
  379. const intersection = range.getIntersection( otherRange );
  380. expect( intersection.start.parent ).to.equal( t2 );
  381. expect( intersection.start.offset ).to.equal( 0 );
  382. expect( intersection.end.parent ).to.equal( t2 );
  383. expect( intersection.end.offset ).to.equal( 3 );
  384. } );
  385. } );
  386. } );
  387. describe( 'getWalker', () => {
  388. it( 'should be possible to iterate using this method', () => {
  389. const range = getRange( '<p>fo{o</p><p>ba}r</p><p>xyz</p>' );
  390. const values = [];
  391. for ( const value of range.getWalker() ) {
  392. values.push( value );
  393. }
  394. expect( values.length ).to.equal( 4 );
  395. expect( values[ 0 ].item.data ).to.equal( 'o' );
  396. expect( values[ 1 ].item.name ).to.equal( 'p' );
  397. expect( values[ 1 ].type ).to.equal( 'elementEnd' );
  398. expect( values[ 2 ].item.name ).to.equal( 'p' );
  399. expect( values[ 2 ].type ).to.equal( 'elementStart' );
  400. expect( values[ 3 ].item.data ).to.equal( 'ba' );
  401. } );
  402. it( 'should accept TreeWalker options', () => {
  403. const range = getRange( '<p>foo</p><p>b{ar</p><p>xy}z</p>' );
  404. const walker = range.getWalker( { singleCharacters: true, ignoreElementEnd: true } );
  405. const values = [];
  406. for ( const value of walker ) {
  407. values.push( value );
  408. }
  409. expect( walker ).to.be.instanceof( TreeWalker );
  410. expect( walker ).to.have.property( 'singleCharacters' ).that.is.true;
  411. expect( values.length ).to.equal( 5 );
  412. expect( values[ 0 ].item.data ).to.equal( 'a' );
  413. expect( values[ 1 ].item.data ).to.equal( 'r' );
  414. expect( values[ 2 ].item.name ).to.equal( 'p' );
  415. expect( values[ 3 ].item.data ).to.equal( 'x' );
  416. expect( values[ 4 ].item.data ).to.equal( 'y' );
  417. } );
  418. } );
  419. describe( 'getItems', () => {
  420. it( 'should return iterator that iterates over all view items in the range', () => {
  421. const range = getRange( '<p>fo{o</p><p>bar</p><p>xy}z</p>' );
  422. const nodes = [];
  423. for ( const node of range.getItems() ) {
  424. nodes.push( node );
  425. }
  426. expect( nodes.length ).to.equal( 5 );
  427. expect( nodes[ 0 ].data ).to.equal( 'o' );
  428. expect( nodes[ 1 ].name ).to.equal( 'p' );
  429. expect( nodes[ 2 ].data ).to.equal( 'bar' );
  430. expect( nodes[ 3 ].name ).to.equal( 'p' );
  431. expect( nodes[ 4 ].data ).to.equal( 'xy' );
  432. } );
  433. it( 'should accept TreeWalker options', () => {
  434. const range = getRange( '<p>foo</p><p>b{ar</p><p>xy}z</p>' );
  435. const nodes = [];
  436. for ( const node of range.getItems( { singleCharacters: true } ) ) {
  437. nodes.push( node );
  438. }
  439. expect( nodes.length ).to.equal( 5 );
  440. expect( nodes[ 0 ].data ).to.equal( 'a' );
  441. expect( nodes[ 1 ].data ).to.equal( 'r' );
  442. expect( nodes[ 2 ].name ).to.equal( 'p' );
  443. expect( nodes[ 3 ].data ).to.equal( 'x' );
  444. expect( nodes[ 4 ].data ).to.equal( 'y' );
  445. } );
  446. } );
  447. describe( 'getPositions', () => {
  448. it( 'should return iterator that iterates over all positions in the range', () => {
  449. const range = getRange( '<p>fo{o</p><p>b}ar</p><p>xyz</p>' );
  450. const positions = [];
  451. for ( const position of range.getPositions() ) {
  452. positions.push( position );
  453. }
  454. expect( positions.length ).to.equal( 5 );
  455. expect( positions[ 0 ].parent.data ).to.equal( 'foo' ); // Inside text node "foo".
  456. expect( positions[ 0 ].offset ).to.equal( 2 );
  457. expect( positions[ 1 ].parent.name ).to.equal( 'p' ); // At the end of the first P element.
  458. expect( positions[ 1 ].offset ).to.equal( 1 );
  459. expect( positions[ 2 ].parent ).to.be.instanceof( DocumentFragment ); // In document fragment, between Ps.
  460. expect( positions[ 2 ].offset ).to.equal( 1 );
  461. expect( positions[ 3 ].parent.name ).to.equal( 'p' ); // At the beginning of the second P element.
  462. expect( positions[ 3 ].offset ).to.equal( 0 );
  463. expect( positions[ 4 ].parent.data ).to.equal( 'bar' ); // Inside text node "bar".
  464. expect( positions[ 4 ].offset ).to.equal( 1 );
  465. } );
  466. it( 'should accept TreeWalker options', () => {
  467. const range = getRange( '<p>foo</p><p>b{ar</p><p>xy}z</p>' );
  468. const positions = [];
  469. for ( const position of range.getPositions( { singleCharacters: true } ) ) {
  470. positions.push( position );
  471. }
  472. expect( positions.length ).to.equal( 7 );
  473. expect( positions[ 0 ].parent.data ).to.equal( 'bar' ); // "b^ar".
  474. expect( positions[ 0 ].offset ).to.equal( 1 );
  475. expect( positions[ 1 ].parent.data ).to.equal( 'bar' ); // "ba^r".
  476. expect( positions[ 1 ].offset ).to.equal( 2 );
  477. expect( positions[ 2 ].parent.name ).to.equal( 'p' ); // <p>bar^</p> -- at the end of P node.
  478. expect( positions[ 2 ].offset ).to.equal( 1 );
  479. expect( positions[ 3 ].parent ).to.be.instanceof( DocumentFragment ); // "</p>^<p>" -- between P nodes.
  480. expect( positions[ 3 ].offset ).to.equal( 2 );
  481. expect( positions[ 4 ].parent.name ).to.equal( 'p' ); // <p>^xyz</p> -- at the start of P node.
  482. expect( positions[ 4 ].offset ).to.equal( 0 );
  483. expect( positions[ 5 ].parent.data ).to.equal( 'xyz' ); // "x^yz".
  484. expect( positions[ 5 ].offset ).to.equal( 1 );
  485. expect( positions[ 6 ].parent.data ).to.equal( 'xyz' ); // "xy^z".
  486. expect( positions[ 6 ].offset ).to.equal( 2 );
  487. } );
  488. } );
  489. describe( 'static constructors', () => {
  490. let div, p, foz;
  491. beforeEach( () => {
  492. foz = new Text( 'foz' );
  493. p = new Element( 'p', null, foz );
  494. div = new Element( 'div', null, p );
  495. } );
  496. describe( 'createIn', () => {
  497. it( 'should return range', () => {
  498. const range = Range.createIn( p );
  499. expect( range.start.parent ).to.deep.equal( p );
  500. expect( range.start.offset ).to.deep.equal( 0 );
  501. expect( range.end.parent ).to.deep.equal( p );
  502. expect( range.end.offset ).to.deep.equal( 1 );
  503. } );
  504. } );
  505. describe( 'createOn', () => {
  506. it( 'should return range', () => {
  507. const range = Range.createOn( p );
  508. expect( range.start.parent ).to.equal( div );
  509. expect( range.start.offset ).to.equal( 0 );
  510. expect( range.end.parent ).to.equal( div );
  511. expect( range.end.offset ).to.equal( 1 );
  512. } );
  513. } );
  514. describe( 'createFromParentsAndOffsets', () => {
  515. it( 'should return range', () => {
  516. const range = Range.createFromParentsAndOffsets( div, 0, foz, 1 );
  517. expect( range.start.parent ).to.deep.equal( div );
  518. expect( range.start.offset ).to.deep.equal( 0 );
  519. expect( range.end.parent ).to.deep.equal( foz );
  520. expect( range.end.offset ).to.deep.equal( 1 );
  521. } );
  522. } );
  523. describe( 'createFromPositionAndShift', () => {
  524. it( 'should make range from start position and offset', () => {
  525. const position = new Position( foz, 1 );
  526. const range = Range.createFromPositionAndShift( position, 2 );
  527. expect( range ).to.be.instanceof( Range );
  528. expect( range.start.isEqual( position ) ).to.be.true;
  529. expect( range.end.parent ).to.equal( foz );
  530. expect( range.end.offset ).to.deep.equal( 3 );
  531. } );
  532. it( 'should accept negative shift value', () => {
  533. const position = new Position( foz, 3 );
  534. const range = Range.createFromPositionAndShift( position, -1 );
  535. expect( range ).to.be.instanceof( Range );
  536. expect( range.end.isEqual( position ) ).to.be.true;
  537. expect( range.start.parent ).to.equal( foz );
  538. expect( range.start.offset ).to.deep.equal( 2 );
  539. } );
  540. } );
  541. describe( 'createFromRange', () => {
  542. it( 'should create a new instance of Range that is equal to passed range', () => {
  543. const range = new Range( new Position( foz, 0 ), new Position( foz, 2 ) );
  544. const clone = Range.createFromRange( range );
  545. expect( clone ).not.to.be.equal( range ); // clone is not pointing to the same object as position
  546. expect( clone.isEqual( range ) ).to.be.true; // but they are equal in the position-sense
  547. } );
  548. } );
  549. } );
  550. describe( 'getCommonAncestor()', () => {
  551. it( 'should return common ancestor for positions from Range', () => {
  552. const foz = new Text( 'foz' );
  553. const bar = new Text( 'bar' );
  554. const li1 = new Element( 'li', null, foz );
  555. const li2 = new Element( 'li', null, bar );
  556. const ul = new Element( 'ul', null, [ li1, li2 ] );
  557. const range = new Range( new Position( li1, 0 ), new Position( li2, 2 ) );
  558. expect( range.getCommonAncestor() ).to.equal( ul );
  559. } );
  560. } );
  561. } );