util.js 13 KB

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  1. var BUILTIN_OBJECT = {
  2. '[object Function]': true,
  3. '[object RegExp]': true,
  4. '[object Date]': true,
  5. '[object Error]': true,
  6. '[object CanvasGradient]': true,
  7. '[object CanvasPattern]': true,
  8. '[object Image]': true,
  9. '[object Canvas]': true
  10. };
  11. var TYPED_ARRAY = {
  12. '[object Int8Array]': true,
  13. '[object Uint8Array]': true,
  14. '[object Uint8ClampedArray]': true,
  15. '[object Int16Array]': true,
  16. '[object Uint16Array]': true,
  17. '[object Int32Array]': true,
  18. '[object Uint32Array]': true,
  19. '[object Float32Array]': true,
  20. '[object Float64Array]': true
  21. };
  22. var objToString = Object.prototype.toString;
  23. var arrayProto = Array.prototype;
  24. var nativeForEach = arrayProto.forEach;
  25. var nativeFilter = arrayProto.filter;
  26. var nativeSlice = arrayProto.slice;
  27. var nativeMap = arrayProto.map;
  28. var ctorFunction = function () { }.constructor;
  29. var protoFunction = ctorFunction ? ctorFunction.prototype : null;
  30. var protoKey = '__proto__';
  31. var methods = {};
  32. export function $override(name, fn) {
  33. methods[name] = fn;
  34. }
  35. var idStart = 0x0907;
  36. export function guid() {
  37. return idStart++;
  38. }
  39. export function logError() {
  40. var args = [];
  41. for (var _i = 0; _i < arguments.length; _i++) {
  42. args[_i] = arguments[_i];
  43. }
  44. if (typeof console !== 'undefined') {
  45. console.error.apply(console, args);
  46. }
  47. }
  48. export function clone(source) {
  49. if (source == null || typeof source !== 'object') {
  50. return source;
  51. }
  52. var result = source;
  53. var typeStr = objToString.call(source);
  54. if (typeStr === '[object Array]') {
  55. if (!isPrimitive(source)) {
  56. result = [];
  57. for (var i = 0, len = source.length; i < len; i++) {
  58. result[i] = clone(source[i]);
  59. }
  60. }
  61. }
  62. else if (TYPED_ARRAY[typeStr]) {
  63. if (!isPrimitive(source)) {
  64. var Ctor = source.constructor;
  65. if (Ctor.from) {
  66. result = Ctor.from(source);
  67. }
  68. else {
  69. result = new Ctor(source.length);
  70. for (var i = 0, len = source.length; i < len; i++) {
  71. result[i] = clone(source[i]);
  72. }
  73. }
  74. }
  75. }
  76. else if (!BUILTIN_OBJECT[typeStr] && !isPrimitive(source) && !isDom(source)) {
  77. result = {};
  78. for (var key in source) {
  79. if (source.hasOwnProperty(key) && key !== protoKey) {
  80. result[key] = clone(source[key]);
  81. }
  82. }
  83. }
  84. return result;
  85. }
  86. export function merge(target, source, overwrite) {
  87. if (!isObject(source) || !isObject(target)) {
  88. return overwrite ? clone(source) : target;
  89. }
  90. for (var key in source) {
  91. if (source.hasOwnProperty(key) && key !== protoKey) {
  92. var targetProp = target[key];
  93. var sourceProp = source[key];
  94. if (isObject(sourceProp)
  95. && isObject(targetProp)
  96. && !isArray(sourceProp)
  97. && !isArray(targetProp)
  98. && !isDom(sourceProp)
  99. && !isDom(targetProp)
  100. && !isBuiltInObject(sourceProp)
  101. && !isBuiltInObject(targetProp)
  102. && !isPrimitive(sourceProp)
  103. && !isPrimitive(targetProp)) {
  104. merge(targetProp, sourceProp, overwrite);
  105. }
  106. else if (overwrite || !(key in target)) {
  107. target[key] = clone(source[key]);
  108. }
  109. }
  110. }
  111. return target;
  112. }
  113. export function mergeAll(targetAndSources, overwrite) {
  114. var result = targetAndSources[0];
  115. for (var i = 1, len = targetAndSources.length; i < len; i++) {
  116. result = merge(result, targetAndSources[i], overwrite);
  117. }
  118. return result;
  119. }
  120. export function extend(target, source) {
  121. if (Object.assign) {
  122. Object.assign(target, source);
  123. }
  124. else {
  125. for (var key in source) {
  126. if (source.hasOwnProperty(key) && key !== protoKey) {
  127. target[key] = source[key];
  128. }
  129. }
  130. }
  131. return target;
  132. }
  133. export function defaults(target, source, overlay) {
  134. var keysArr = keys(source);
  135. for (var i = 0; i < keysArr.length; i++) {
  136. var key = keysArr[i];
  137. if ((overlay ? source[key] != null : target[key] == null)) {
  138. target[key] = source[key];
  139. }
  140. }
  141. return target;
  142. }
  143. export var createCanvas = function () {
  144. return methods.createCanvas();
  145. };
  146. methods.createCanvas = function () {
  147. return document.createElement('canvas');
  148. };
  149. export function indexOf(array, value) {
  150. if (array) {
  151. if (array.indexOf) {
  152. return array.indexOf(value);
  153. }
  154. for (var i = 0, len = array.length; i < len; i++) {
  155. if (array[i] === value) {
  156. return i;
  157. }
  158. }
  159. }
  160. return -1;
  161. }
  162. export function inherits(clazz, baseClazz) {
  163. var clazzPrototype = clazz.prototype;
  164. function F() { }
  165. F.prototype = baseClazz.prototype;
  166. clazz.prototype = new F();
  167. for (var prop in clazzPrototype) {
  168. if (clazzPrototype.hasOwnProperty(prop)) {
  169. clazz.prototype[prop] = clazzPrototype[prop];
  170. }
  171. }
  172. clazz.prototype.constructor = clazz;
  173. clazz.superClass = baseClazz;
  174. }
  175. export function mixin(target, source, override) {
  176. target = 'prototype' in target ? target.prototype : target;
  177. source = 'prototype' in source ? source.prototype : source;
  178. if (Object.getOwnPropertyNames) {
  179. var keyList = Object.getOwnPropertyNames(source);
  180. for (var i = 0; i < keyList.length; i++) {
  181. var key = keyList[i];
  182. if (key !== 'constructor') {
  183. if ((override ? source[key] != null : target[key] == null)) {
  184. target[key] = source[key];
  185. }
  186. }
  187. }
  188. }
  189. else {
  190. defaults(target, source, override);
  191. }
  192. }
  193. export function isArrayLike(data) {
  194. if (!data) {
  195. return false;
  196. }
  197. if (typeof data === 'string') {
  198. return false;
  199. }
  200. return typeof data.length === 'number';
  201. }
  202. export function each(arr, cb, context) {
  203. if (!(arr && cb)) {
  204. return;
  205. }
  206. if (arr.forEach && arr.forEach === nativeForEach) {
  207. arr.forEach(cb, context);
  208. }
  209. else if (arr.length === +arr.length) {
  210. for (var i = 0, len = arr.length; i < len; i++) {
  211. cb.call(context, arr[i], i, arr);
  212. }
  213. }
  214. else {
  215. for (var key in arr) {
  216. if (arr.hasOwnProperty(key)) {
  217. cb.call(context, arr[key], key, arr);
  218. }
  219. }
  220. }
  221. }
  222. export function map(arr, cb, context) {
  223. if (!arr) {
  224. return [];
  225. }
  226. if (!cb) {
  227. return slice(arr);
  228. }
  229. if (arr.map && arr.map === nativeMap) {
  230. return arr.map(cb, context);
  231. }
  232. else {
  233. var result = [];
  234. for (var i = 0, len = arr.length; i < len; i++) {
  235. result.push(cb.call(context, arr[i], i, arr));
  236. }
  237. return result;
  238. }
  239. }
  240. export function reduce(arr, cb, memo, context) {
  241. if (!(arr && cb)) {
  242. return;
  243. }
  244. for (var i = 0, len = arr.length; i < len; i++) {
  245. memo = cb.call(context, memo, arr[i], i, arr);
  246. }
  247. return memo;
  248. }
  249. export function filter(arr, cb, context) {
  250. if (!arr) {
  251. return [];
  252. }
  253. if (!cb) {
  254. return slice(arr);
  255. }
  256. if (arr.filter && arr.filter === nativeFilter) {
  257. return arr.filter(cb, context);
  258. }
  259. else {
  260. var result = [];
  261. for (var i = 0, len = arr.length; i < len; i++) {
  262. if (cb.call(context, arr[i], i, arr)) {
  263. result.push(arr[i]);
  264. }
  265. }
  266. return result;
  267. }
  268. }
  269. export function find(arr, cb, context) {
  270. if (!(arr && cb)) {
  271. return;
  272. }
  273. for (var i = 0, len = arr.length; i < len; i++) {
  274. if (cb.call(context, arr[i], i, arr)) {
  275. return arr[i];
  276. }
  277. }
  278. }
  279. export function keys(obj) {
  280. if (!obj) {
  281. return [];
  282. }
  283. if (Object.keys) {
  284. return Object.keys(obj);
  285. }
  286. var keyList = [];
  287. for (var key in obj) {
  288. if (obj.hasOwnProperty(key)) {
  289. keyList.push(key);
  290. }
  291. }
  292. return keyList;
  293. }
  294. function bindPolyfill(func, context) {
  295. var args = [];
  296. for (var _i = 2; _i < arguments.length; _i++) {
  297. args[_i - 2] = arguments[_i];
  298. }
  299. return function () {
  300. return func.apply(context, args.concat(nativeSlice.call(arguments)));
  301. };
  302. }
  303. export var bind = (protoFunction && isFunction(protoFunction.bind))
  304. ? protoFunction.call.bind(protoFunction.bind)
  305. : bindPolyfill;
  306. function curry(func) {
  307. var args = [];
  308. for (var _i = 1; _i < arguments.length; _i++) {
  309. args[_i - 1] = arguments[_i];
  310. }
  311. return function () {
  312. return func.apply(this, args.concat(nativeSlice.call(arguments)));
  313. };
  314. }
  315. export { curry };
  316. export function isArray(value) {
  317. if (Array.isArray) {
  318. return Array.isArray(value);
  319. }
  320. return objToString.call(value) === '[object Array]';
  321. }
  322. export function isFunction(value) {
  323. return typeof value === 'function';
  324. }
  325. export function isString(value) {
  326. return typeof value === 'string';
  327. }
  328. export function isStringSafe(value) {
  329. return objToString.call(value) === '[object String]';
  330. }
  331. export function isNumber(value) {
  332. return typeof value === 'number';
  333. }
  334. export function isObject(value) {
  335. var type = typeof value;
  336. return type === 'function' || (!!value && type === 'object');
  337. }
  338. export function isBuiltInObject(value) {
  339. return !!BUILTIN_OBJECT[objToString.call(value)];
  340. }
  341. export function isTypedArray(value) {
  342. return !!TYPED_ARRAY[objToString.call(value)];
  343. }
  344. export function isDom(value) {
  345. return typeof value === 'object'
  346. && typeof value.nodeType === 'number'
  347. && typeof value.ownerDocument === 'object';
  348. }
  349. export function isGradientObject(value) {
  350. return value.colorStops != null;
  351. }
  352. export function isImagePatternObject(value) {
  353. return value.image != null;
  354. }
  355. export function isRegExp(value) {
  356. return objToString.call(value) === '[object RegExp]';
  357. }
  358. export function eqNaN(value) {
  359. return value !== value;
  360. }
  361. export function retrieve() {
  362. var args = [];
  363. for (var _i = 0; _i < arguments.length; _i++) {
  364. args[_i] = arguments[_i];
  365. }
  366. for (var i = 0, len = args.length; i < len; i++) {
  367. if (args[i] != null) {
  368. return args[i];
  369. }
  370. }
  371. }
  372. export function retrieve2(value0, value1) {
  373. return value0 != null
  374. ? value0
  375. : value1;
  376. }
  377. export function retrieve3(value0, value1, value2) {
  378. return value0 != null
  379. ? value0
  380. : value1 != null
  381. ? value1
  382. : value2;
  383. }
  384. export function slice(arr) {
  385. var args = [];
  386. for (var _i = 1; _i < arguments.length; _i++) {
  387. args[_i - 1] = arguments[_i];
  388. }
  389. return nativeSlice.apply(arr, args);
  390. }
  391. export function normalizeCssArray(val) {
  392. if (typeof (val) === 'number') {
  393. return [val, val, val, val];
  394. }
  395. var len = val.length;
  396. if (len === 2) {
  397. return [val[0], val[1], val[0], val[1]];
  398. }
  399. else if (len === 3) {
  400. return [val[0], val[1], val[2], val[1]];
  401. }
  402. return val;
  403. }
  404. export function assert(condition, message) {
  405. if (!condition) {
  406. throw new Error(message);
  407. }
  408. }
  409. export function trim(str) {
  410. if (str == null) {
  411. return null;
  412. }
  413. else if (typeof str.trim === 'function') {
  414. return str.trim();
  415. }
  416. else {
  417. return str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
  418. }
  419. }
  420. var primitiveKey = '__ec_primitive__';
  421. export function setAsPrimitive(obj) {
  422. obj[primitiveKey] = true;
  423. }
  424. export function isPrimitive(obj) {
  425. return obj[primitiveKey];
  426. }
  427. var HashMap = (function () {
  428. function HashMap(obj) {
  429. this.data = {};
  430. var isArr = isArray(obj);
  431. this.data = {};
  432. var thisMap = this;
  433. (obj instanceof HashMap)
  434. ? obj.each(visit)
  435. : (obj && each(obj, visit));
  436. function visit(value, key) {
  437. isArr ? thisMap.set(value, key) : thisMap.set(key, value);
  438. }
  439. }
  440. HashMap.prototype.get = function (key) {
  441. return this.data.hasOwnProperty(key) ? this.data[key] : null;
  442. };
  443. HashMap.prototype.set = function (key, value) {
  444. return (this.data[key] = value);
  445. };
  446. HashMap.prototype.each = function (cb, context) {
  447. for (var key in this.data) {
  448. if (this.data.hasOwnProperty(key)) {
  449. cb.call(context, this.data[key], key);
  450. }
  451. }
  452. };
  453. HashMap.prototype.keys = function () {
  454. return keys(this.data);
  455. };
  456. HashMap.prototype.removeKey = function (key) {
  457. delete this.data[key];
  458. };
  459. return HashMap;
  460. }());
  461. export { HashMap };
  462. export function createHashMap(obj) {
  463. return new HashMap(obj);
  464. }
  465. export function concatArray(a, b) {
  466. var newArray = new a.constructor(a.length + b.length);
  467. for (var i = 0; i < a.length; i++) {
  468. newArray[i] = a[i];
  469. }
  470. var offset = a.length;
  471. for (var i = 0; i < b.length; i++) {
  472. newArray[i + offset] = b[i];
  473. }
  474. return newArray;
  475. }
  476. export function createObject(proto, properties) {
  477. var obj;
  478. if (Object.create) {
  479. obj = Object.create(proto);
  480. }
  481. else {
  482. var StyleCtor = function () { };
  483. StyleCtor.prototype = proto;
  484. obj = new StyleCtor();
  485. }
  486. if (properties) {
  487. extend(obj, properties);
  488. }
  489. return obj;
  490. }
  491. export function hasOwn(own, prop) {
  492. return own.hasOwnProperty(prop);
  493. }
  494. export function noop() { }