pagination.component.js 33 KB

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  1. /**
  2. * @fileoverview added by tsickle
  3. * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
  4. */
  5. import { ChangeDetectorRef, Component, ElementRef, EventEmitter, forwardRef, Input, Output } from '@angular/core';
  6. import { NG_VALUE_ACCESSOR } from '@angular/forms';
  7. import { PaginationConfig } from './pagination.config';
  8. /**
  9. * @record
  10. */
  11. export function PageChangedEvent() { }
  12. if (false) {
  13. /** @type {?} */
  14. PageChangedEvent.prototype.itemsPerPage;
  15. /** @type {?} */
  16. PageChangedEvent.prototype.page;
  17. }
  18. /** @type {?} */
  19. export const PAGINATION_CONTROL_VALUE_ACCESSOR = {
  20. provide: NG_VALUE_ACCESSOR,
  21. /* tslint:disable-next-line: no-use-before-declare */
  22. useExisting: forwardRef((/**
  23. * @return {?}
  24. */
  25. () => PaginationComponent)),
  26. multi: true
  27. };
  28. export class PaginationComponent {
  29. /**
  30. * @param {?} elementRef
  31. * @param {?} paginationConfig
  32. * @param {?} changeDetection
  33. */
  34. constructor(elementRef, paginationConfig, changeDetection) {
  35. this.elementRef = elementRef;
  36. this.changeDetection = changeDetection;
  37. /**
  38. * fired when total pages count changes, $event:number equals to total pages count
  39. */
  40. this.numPages = new EventEmitter();
  41. /**
  42. * fired when page was changed, $event:{page, itemsPerPage} equals to object
  43. * with current page index and number of items per page
  44. */
  45. this.pageChanged = new EventEmitter();
  46. this.onChange = Function.prototype;
  47. this.onTouched = Function.prototype;
  48. this.inited = false;
  49. this._page = 1;
  50. this.elementRef = elementRef;
  51. if (!this.config) {
  52. this.configureOptions(paginationConfig.main);
  53. }
  54. }
  55. /**
  56. * maximum number of items per page. If value less than 1 will display all items on one page
  57. * @return {?}
  58. */
  59. get itemsPerPage() {
  60. return this._itemsPerPage;
  61. }
  62. /**
  63. * @param {?} v
  64. * @return {?}
  65. */
  66. set itemsPerPage(v) {
  67. this._itemsPerPage = v;
  68. this.totalPages = this.calculateTotalPages();
  69. }
  70. /**
  71. * total number of items in all pages
  72. * @return {?}
  73. */
  74. get totalItems() {
  75. return this._totalItems;
  76. }
  77. /**
  78. * @param {?} v
  79. * @return {?}
  80. */
  81. set totalItems(v) {
  82. this._totalItems = v;
  83. this.totalPages = this.calculateTotalPages();
  84. }
  85. /**
  86. * @return {?}
  87. */
  88. get totalPages() {
  89. return this._totalPages;
  90. }
  91. /**
  92. * @param {?} v
  93. * @return {?}
  94. */
  95. set totalPages(v) {
  96. this._totalPages = v;
  97. this.numPages.emit(v);
  98. if (this.inited) {
  99. this.selectPage(this.page);
  100. }
  101. }
  102. /**
  103. * @param {?} value
  104. * @return {?}
  105. */
  106. set page(value) {
  107. /** @type {?} */
  108. const _previous = this._page;
  109. this._page = value > this.totalPages ? this.totalPages : value || 1;
  110. this.changeDetection.markForCheck();
  111. if (_previous === this._page || typeof _previous === 'undefined') {
  112. return;
  113. }
  114. this.pageChanged.emit({
  115. page: this._page,
  116. itemsPerPage: this.itemsPerPage
  117. });
  118. }
  119. /**
  120. * @return {?}
  121. */
  122. get page() {
  123. return this._page;
  124. }
  125. /**
  126. * @param {?} config
  127. * @return {?}
  128. */
  129. configureOptions(config) {
  130. this.config = Object.assign({}, config);
  131. }
  132. /**
  133. * @return {?}
  134. */
  135. ngOnInit() {
  136. if (typeof window !== 'undefined') {
  137. this.classMap = this.elementRef.nativeElement.getAttribute('class') || '';
  138. }
  139. // watch for maxSize
  140. this.maxSize =
  141. typeof this.maxSize !== 'undefined' ? this.maxSize : this.config.maxSize;
  142. this.rotate =
  143. typeof this.rotate !== 'undefined' ? this.rotate : this.config.rotate;
  144. this.boundaryLinks =
  145. typeof this.boundaryLinks !== 'undefined'
  146. ? this.boundaryLinks
  147. : this.config.boundaryLinks;
  148. this.directionLinks =
  149. typeof this.directionLinks !== 'undefined'
  150. ? this.directionLinks
  151. : this.config.directionLinks;
  152. this.pageBtnClass =
  153. typeof this.pageBtnClass !== 'undefined'
  154. ? this.pageBtnClass
  155. : this.config.pageBtnClass;
  156. // base class
  157. this.itemsPerPage =
  158. typeof this.itemsPerPage !== 'undefined'
  159. ? this.itemsPerPage
  160. : this.config.itemsPerPage;
  161. this.totalPages = this.calculateTotalPages();
  162. // this class
  163. this.pages = this.getPages(this.page, this.totalPages);
  164. this.inited = true;
  165. }
  166. /**
  167. * @param {?} value
  168. * @return {?}
  169. */
  170. writeValue(value) {
  171. this.page = value;
  172. this.pages = this.getPages(this.page, this.totalPages);
  173. }
  174. /**
  175. * @param {?} key
  176. * @return {?}
  177. */
  178. getText(key) {
  179. // tslint:disable-next-line:no-any
  180. return ((/** @type {?} */ (this)))[`${key}Text`] || ((/** @type {?} */ (this))).config[`${key}Text`];
  181. }
  182. /**
  183. * @return {?}
  184. */
  185. noPrevious() {
  186. return this.page === 1;
  187. }
  188. /**
  189. * @return {?}
  190. */
  191. noNext() {
  192. return this.page === this.totalPages;
  193. }
  194. /**
  195. * @param {?} fn
  196. * @return {?}
  197. */
  198. registerOnChange(fn) {
  199. this.onChange = fn;
  200. }
  201. /**
  202. * @param {?} fn
  203. * @return {?}
  204. */
  205. registerOnTouched(fn) {
  206. this.onTouched = fn;
  207. }
  208. /**
  209. * @param {?} page
  210. * @param {?=} event
  211. * @return {?}
  212. */
  213. selectPage(page, event) {
  214. if (event) {
  215. event.preventDefault();
  216. }
  217. if (!this.disabled) {
  218. if (event && event.target) {
  219. // tslint:disable-next-line:no-any
  220. /** @type {?} */
  221. const target = event.target;
  222. target.blur();
  223. }
  224. this.writeValue(page);
  225. this.onChange(this.page);
  226. }
  227. }
  228. // Create page object used in template
  229. /**
  230. * @protected
  231. * @param {?} num
  232. * @param {?} text
  233. * @param {?} active
  234. * @return {?}
  235. */
  236. makePage(num, text, active) {
  237. return { text, number: num, active };
  238. }
  239. /**
  240. * @protected
  241. * @param {?} currentPage
  242. * @param {?} totalPages
  243. * @return {?}
  244. */
  245. getPages(currentPage, totalPages) {
  246. /** @type {?} */
  247. const pages = [];
  248. // Default page limits
  249. /** @type {?} */
  250. let startPage = 1;
  251. /** @type {?} */
  252. let endPage = totalPages;
  253. /** @type {?} */
  254. const isMaxSized = typeof this.maxSize !== 'undefined' && this.maxSize < totalPages;
  255. // recompute if maxSize
  256. if (isMaxSized) {
  257. if (this.rotate) {
  258. // Current page is displayed in the middle of the visible ones
  259. startPage = Math.max(currentPage - Math.floor(this.maxSize / 2), 1);
  260. endPage = startPage + this.maxSize - 1;
  261. // Adjust if limit is exceeded
  262. if (endPage > totalPages) {
  263. endPage = totalPages;
  264. startPage = endPage - this.maxSize + 1;
  265. }
  266. }
  267. else {
  268. // Visible pages are paginated with maxSize
  269. startPage =
  270. (Math.ceil(currentPage / this.maxSize) - 1) * this.maxSize + 1;
  271. // Adjust last page if limit is exceeded
  272. endPage = Math.min(startPage + this.maxSize - 1, totalPages);
  273. }
  274. }
  275. // Add page number links
  276. for (let num = startPage; num <= endPage; num++) {
  277. /** @type {?} */
  278. const page = this.makePage(num, num.toString(), num === currentPage);
  279. pages.push(page);
  280. }
  281. // Add links to move between page sets
  282. if (isMaxSized && !this.rotate) {
  283. if (startPage > 1) {
  284. /** @type {?} */
  285. const previousPageSet = this.makePage(startPage - 1, '...', false);
  286. pages.unshift(previousPageSet);
  287. }
  288. if (endPage < totalPages) {
  289. /** @type {?} */
  290. const nextPageSet = this.makePage(endPage + 1, '...', false);
  291. pages.push(nextPageSet);
  292. }
  293. }
  294. return pages;
  295. }
  296. // base class
  297. /**
  298. * @protected
  299. * @return {?}
  300. */
  301. calculateTotalPages() {
  302. /** @type {?} */
  303. const totalPages = this.itemsPerPage < 1
  304. ? 1
  305. : Math.ceil(this.totalItems / this.itemsPerPage);
  306. return Math.max(totalPages || 0, 1);
  307. }
  308. }
  309. PaginationComponent.decorators = [
  310. { type: Component, args: [{
  311. selector: 'pagination',
  312. template: "<ul class=\"pagination\" [ngClass]=\"classMap\">\n <li class=\"pagination-first page-item\"\n *ngIf=\"boundaryLinks\"\n [class.disabled]=\"noPrevious()||disabled\">\n <a class=\"page-link\" href (click)=\"selectPage(1, $event)\"\n [innerHTML]=\"getText('first')\"></a>\n </li>\n\n <li class=\"pagination-prev page-item\"\n *ngIf=\"directionLinks\"\n [class.disabled]=\"noPrevious()||disabled\">\n <a class=\"page-link\" href (click)=\"selectPage(page - 1, $event)\"\n [innerHTML]=\"getText('previous')\"></a>\n </li>\n\n <li *ngFor=\"let pg of pages\"\n [class.active]=\"pg.active\"\n [class.disabled]=\"disabled&&!pg.active\"\n class=\"pagination-page page-item\">\n <a class=\"page-link\" href (click)=\"selectPage(pg.number, $event)\"\n [innerHTML]=\"pg.text\"></a>\n </li>\n\n <li class=\"pagination-next page-item\"\n *ngIf=\"directionLinks\"\n [class.disabled]=\"noNext()||disabled\">\n <a class=\"page-link\" href (click)=\"selectPage(page + 1, $event)\"\n [innerHTML]=\"getText('next')\"></a></li>\n\n <li class=\"pagination-last page-item\"\n *ngIf=\"boundaryLinks\"\n [class.disabled]=\"noNext()||disabled\">\n <a class=\"page-link\" href (click)=\"selectPage(totalPages, $event)\"\n [innerHTML]=\"getText('last')\"></a></li>\n</ul>\n",
  313. providers: [PAGINATION_CONTROL_VALUE_ACCESSOR]
  314. }] }
  315. ];
  316. /** @nocollapse */
  317. PaginationComponent.ctorParameters = () => [
  318. { type: ElementRef },
  319. { type: PaginationConfig },
  320. { type: ChangeDetectorRef }
  321. ];
  322. PaginationComponent.propDecorators = {
  323. align: [{ type: Input }],
  324. maxSize: [{ type: Input }],
  325. boundaryLinks: [{ type: Input }],
  326. directionLinks: [{ type: Input }],
  327. firstText: [{ type: Input }],
  328. previousText: [{ type: Input }],
  329. nextText: [{ type: Input }],
  330. lastText: [{ type: Input }],
  331. rotate: [{ type: Input }],
  332. pageBtnClass: [{ type: Input }],
  333. disabled: [{ type: Input }],
  334. numPages: [{ type: Output }],
  335. pageChanged: [{ type: Output }],
  336. itemsPerPage: [{ type: Input }],
  337. totalItems: [{ type: Input }]
  338. };
  339. if (false) {
  340. /** @type {?} */
  341. PaginationComponent.prototype.config;
  342. /**
  343. * if `true` aligns each link to the sides of pager
  344. * @type {?}
  345. */
  346. PaginationComponent.prototype.align;
  347. /**
  348. * limit number for page links in pager
  349. * @type {?}
  350. */
  351. PaginationComponent.prototype.maxSize;
  352. /**
  353. * if false first and last buttons will be hidden
  354. * @type {?}
  355. */
  356. PaginationComponent.prototype.boundaryLinks;
  357. /**
  358. * if false previous and next buttons will be hidden
  359. * @type {?}
  360. */
  361. PaginationComponent.prototype.directionLinks;
  362. /**
  363. * first button text
  364. * @type {?}
  365. */
  366. PaginationComponent.prototype.firstText;
  367. /**
  368. * previous button text
  369. * @type {?}
  370. */
  371. PaginationComponent.prototype.previousText;
  372. /**
  373. * next button text
  374. * @type {?}
  375. */
  376. PaginationComponent.prototype.nextText;
  377. /**
  378. * last button text
  379. * @type {?}
  380. */
  381. PaginationComponent.prototype.lastText;
  382. /**
  383. * if true current page will in the middle of pages list
  384. * @type {?}
  385. */
  386. PaginationComponent.prototype.rotate;
  387. /**
  388. * add class to <code><li\></code>
  389. * @type {?}
  390. */
  391. PaginationComponent.prototype.pageBtnClass;
  392. /**
  393. * if true pagination component will be disabled
  394. * @type {?}
  395. */
  396. PaginationComponent.prototype.disabled;
  397. /**
  398. * fired when total pages count changes, $event:number equals to total pages count
  399. * @type {?}
  400. */
  401. PaginationComponent.prototype.numPages;
  402. /**
  403. * fired when page was changed, $event:{page, itemsPerPage} equals to object
  404. * with current page index and number of items per page
  405. * @type {?}
  406. */
  407. PaginationComponent.prototype.pageChanged;
  408. /** @type {?} */
  409. PaginationComponent.prototype.onChange;
  410. /** @type {?} */
  411. PaginationComponent.prototype.onTouched;
  412. /** @type {?} */
  413. PaginationComponent.prototype.classMap;
  414. /** @type {?} */
  415. PaginationComponent.prototype.pages;
  416. /**
  417. * @type {?}
  418. * @protected
  419. */
  420. PaginationComponent.prototype._itemsPerPage;
  421. /**
  422. * @type {?}
  423. * @protected
  424. */
  425. PaginationComponent.prototype._totalItems;
  426. /**
  427. * @type {?}
  428. * @protected
  429. */
  430. PaginationComponent.prototype._totalPages;
  431. /**
  432. * @type {?}
  433. * @protected
  434. */
  435. PaginationComponent.prototype.inited;
  436. /**
  437. * @type {?}
  438. * @protected
  439. */
  440. PaginationComponent.prototype._page;
  441. /**
  442. * @type {?}
  443. * @private
  444. */
  445. PaginationComponent.prototype.elementRef;
  446. /**
  447. * @type {?}
  448. * @private
  449. */
  450. PaginationComponent.prototype.changeDetection;
  451. }
  452. //# 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itemsPerPage} equals to object\n   * with current page index and number of items per page\n   */\n  @Output()\n  pageChanged = new EventEmitter<PageChangedEvent>();\n\n  /** maximum number of items per page. 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