@angular/common
Version:
Angular - commonly needed directives and services
96 lines • 11.4 kB
JavaScript
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as tslib_1 from "tslib";
import { Injectable, KeyValueDiffers, Pipe } from '@angular/core';
function makeKeyValuePair(key, value) {
return { key: key, value: value };
}
/**
* @ngModule CommonModule
* @description
*
* Transforms Object or Map into an array of key value pairs.
*
* The output array will be ordered by keys.
* By default the comparator will be by Unicode point value.
* You can optionally pass a compareFn if your keys are complex types.
*
* @usageNotes
* ### Examples
*
* This examples show how an Object or a Map can be iterated by ngFor with the use of this keyvalue
* pipe.
*
* {@example common/pipes/ts/keyvalue_pipe.ts region='KeyValuePipe'}
*
* @publicApi
*/
var KeyValuePipe = /** @class */ (function () {
function KeyValuePipe(differs) {
this.differs = differs;
this.keyValues = [];
}
KeyValuePipe.prototype.transform = function (input, compareFn) {
var _this = this;
if (compareFn === void 0) { compareFn = defaultComparator; }
if (!input || (!(input instanceof Map) && typeof input !== 'object')) {
return null;
}
if (!this.differ) {
// make a differ for whatever type we've been passed in
this.differ = this.differs.find(input).create();
}
var differChanges = this.differ.diff(input);
if (differChanges) {
this.keyValues = [];
differChanges.forEachItem(function (r) {
_this.keyValues.push(makeKeyValuePair(r.key, r.currentValue));
});
this.keyValues.sort(compareFn);
}
return this.keyValues;
};
KeyValuePipe = tslib_1.__decorate([
Injectable(),
Pipe({ name: 'keyvalue', pure: false }),
tslib_1.__metadata("design:paramtypes", [KeyValueDiffers])
], KeyValuePipe);
return KeyValuePipe;
}());
export { KeyValuePipe };
export function defaultComparator(keyValueA, keyValueB) {
var a = keyValueA.key;
var b = keyValueB.key;
// if same exit with 0;
if (a === b)
return 0;
// make sure that undefined are at the end of the sort.
if (a === undefined)
return 1;
if (b === undefined)
return -1;
// make sure that nulls are at the end of the sort.
if (a === null)
return 1;
if (b === null)
return -1;
if (typeof a == 'string' && typeof b == 'string') {
return a < b ? -1 : 1;
}
if (typeof a == 'number' && typeof b == 'number') {
return a - b;
}
if (typeof a == 'boolean' && typeof b == 'boolean') {
return a < b ? -1 : 1;
}
// `a` and `b` are of different types. Compare their string values.
var aString = String(a);
var bString = String(b);
return aString == bString ? 0 : aString < bString ? -1 : 1;
}
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"keyvalue_pipe.js","sourceRoot":"","sources":["../../../../../../../../../../packages/common/src/pipes/keyvalue_pipe.ts"],"names":[],"mappings":"AAAA;;;;;;GAMG;;AAEH,OAAO,EAAC,UAAU,EAAyD,eAAe,EAAE,IAAI,EAAgB,MAAM,eAAe,CAAC;AAEtI,SAAS,gBAAgB,CAAO,GAAM,EAAE,KAAQ;IAC9C,OAAO,EAAC,GAAG,EAAE,GAAG,EAAE,KAAK,EAAE,KAAK,EAAC,CAAC;AAClC,CAAC;AAaD;;;;;;;;;;;;;;;;;;;GAmBG;AAGH;IACE,sBAA6B,OAAwB;QAAxB,YAAO,GAAP,OAAO,CAAiB;QAG7C,cAAS,GAA8B,EAAE,CAAC;IAHM,CAAC;IAgBzD,gCAAS,GAAT,UACI,KAA0D,EAC1D,SAA+E;QAFnF,iBAuBC;QArBG,0BAAA,EAAA,6BAA+E;QAEjF,IAAI,CAAC,KAAK,IAAI,CAAC,CAAC,CAAC,KAAK,YAAY,GAAG,CAAC,IAAI,OAAO,KAAK,KAAK,QAAQ,CAAC,EAAE;YACpE,OAAO,IAAI,CAAC;SACb;QAED,IAAI,CAAC,IAAI,CAAC,MAAM,EAAE;YAChB,uDAAuD;YACvD,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,MAAM,EAAE,CAAC;SACjD;QAED,IAAM,aAAa,GAA+B,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,KAAY,CAAC,CAAC;QAEjF,IAAI,aAAa,EAAE;YACjB,IAAI,CAAC,SAAS,GAAG,EAAE,CAAC;YACpB,aAAa,CAAC,WAAW,CAAC,UAAC,CAA6B;gBACtD,KAAI,CAAC,SAAS,CAAC,IAAI,CAAC,gBAAgB,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC,CAAC,YAAc,CAAC,CAAC,CAAC;YACjE,CAAC,CAAC,CAAC;YACH,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC;SAChC;QACD,OAAO,IAAI,CAAC,SAAS,CAAC;IACxB,CAAC;IAxCU,YAAY;QAFxB,UAAU,EAAE;QACZ,IAAI,CAAC,EAAC,IAAI,EAAE,UAAU,EAAE,IAAI,EAAE,KAAK,EAAC,CAAC;iDAEE,eAAe;OAD1C,YAAY,CAyCxB;IAAD,mBAAC;CAAA,AAzCD,IAyCC;SAzCY,YAAY;AA2CzB,MAAM,UAAU,iBAAiB,CAC7B,SAAyB,EAAE,SAAyB;IACtD,IAAM,CAAC,GAAG,SAAS,CAAC,GAAG,CAAC;IACxB,IAAM,CAAC,GAAG,SAAS,CAAC,GAAG,CAAC;IACxB,uBAAuB;IACvB,IAAI,CAAC,KAAK,CAAC;QAAE,OAAO,CAAC,CAAC;IACtB,uDAAuD;IACvD,IAAI,CAAC,KAAK,SAAS;QAAE,OAAO,CAAC,CAAC;IAC9B,IAAI,CAAC,KAAK,SAAS;QAAE,OAAO,CAAC,CAAC,CAAC;IAC/B,mDAAmD;IACnD,IAAI,CAAC,KAAK,IAAI;QAAE,OAAO,CAAC,CAAC;IACzB,IAAI,CAAC,KAAK,IAAI;QAAE,OAAO,CAAC,CAAC,CAAC;IAC1B,IAAI,OAAO,CAAC,IAAI,QAAQ,IAAI,OAAO,CAAC,IAAI,QAAQ,EAAE;QAChD,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;KACvB;IACD,IAAI,OAAO,CAAC,IAAI,QAAQ,IAAI,OAAO,CAAC,IAAI,QAAQ,EAAE;QAChD,OAAO,CAAC,GAAG,CAAC,CAAC;KACd;IACD,IAAI,OAAO,CAAC,IAAI,SAAS,IAAI,OAAO,CAAC,IAAI,SAAS,EAAE;QAClD,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;KACvB;IACD,mEAAmE;IACnE,IAAM,OAAO,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;IAC1B,IAAM,OAAO,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;IAC1B,OAAO,OAAO,IAAI,OAAO,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,OAAO,GAAG,OAAO,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;AAC7D,CAAC","sourcesContent":["/**\n * @license\n * Copyright Google Inc. All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Injectable, KeyValueChangeRecord, KeyValueChanges, KeyValueDiffer, KeyValueDiffers, Pipe, PipeTransform} from '@angular/core';\n\nfunction makeKeyValuePair<K, V>(key: K, value: V): KeyValue<K, V> {\n  return {key: key, value: value};\n}\n\n/**\n * A key value pair.\n * Usually used to represent the key value pairs from a Map or Object.\n *\n * @publicApi\n */\nexport interface KeyValue<K, V> {\n  key: K;\n  value: V;\n}\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Transforms Object or Map into an array of key value pairs.\n *\n * The output array will be ordered by keys.\n * By default the comparator will be by Unicode point value.\n * You can optionally pass a compareFn if your keys are complex types.\n *\n * @usageNotes\n * ### Examples\n *\n * This examples show how an Object or a Map can be iterated by ngFor with the use of this keyvalue\n * pipe.\n *\n * {@example common/pipes/ts/keyvalue_pipe.ts region='KeyValuePipe'}\n *\n * @publicApi\n */\n@Injectable()\n@Pipe({name: 'keyvalue', pure: false})\nexport class KeyValuePipe implements PipeTransform {\n  constructor(private readonly differs: KeyValueDiffers) {}\n\n  private differ !: KeyValueDiffer<any, any>;\n  private keyValues: Array<KeyValue<any, any>> = [];\n\n  transform<K, V>(input: null, compareFn?: (a: KeyValue<K, V>, b: KeyValue<K, V>) => number): null;\n  transform<V>(\n      input: {[key: string]: V}|Map<string, V>,\n      compareFn?: (a: KeyValue<string, V>, b: KeyValue<string, V>) => number):\n      Array<KeyValue<string, V>>;\n  transform<V>(\n      input: {[key: number]: V}|Map<number, V>,\n      compareFn?: (a: KeyValue<number, V>, b: KeyValue<number, V>) => number):\n      Array<KeyValue<number, V>>;\n  transform<K, V>(input: Map<K, V>, compareFn?: (a: KeyValue<K, V>, b: KeyValue<K, V>) => number):\n      Array<KeyValue<K, V>>;\n  transform<K, V>(\n      input: null|{[key: string]: V, [key: number]: V}|Map<K, V>,\n      compareFn: (a: KeyValue<K, V>, b: KeyValue<K, V>) => number = defaultComparator):\n      Array<KeyValue<K, V>>|null {\n    if (!input || (!(input instanceof Map) && typeof input !== 'object')) {\n      return null;\n    }\n\n    if (!this.differ) {\n      // make a differ for whatever type we've been passed in\n      this.differ = this.differs.find(input).create();\n    }\n\n    const differChanges: KeyValueChanges<K, V>|null = this.differ.diff(input as any);\n\n    if (differChanges) {\n      this.keyValues = [];\n      differChanges.forEachItem((r: KeyValueChangeRecord<K, V>) => {\n        this.keyValues.push(makeKeyValuePair(r.key, r.currentValue !));\n      });\n      this.keyValues.sort(compareFn);\n    }\n    return this.keyValues;\n  }\n}\n\nexport function defaultComparator<K, V>(\n    keyValueA: KeyValue<K, V>, keyValueB: KeyValue<K, V>): number {\n  const a = keyValueA.key;\n  const b = keyValueB.key;\n  // if same exit with 0;\n  if (a === b) return 0;\n  // make sure that undefined are at the end of the sort.\n  if (a === undefined) return 1;\n  if (b === undefined) return -1;\n  // make sure that nulls are at the end of the sort.\n  if (a === null) return 1;\n  if (b === null) return -1;\n  if (typeof a == 'string' && typeof b == 'string') {\n    return a < b ? -1 : 1;\n  }\n  if (typeof a == 'number' && typeof b == 'number') {\n    return a - b;\n  }\n  if (typeof a == 'boolean' && typeof b == 'boolean') {\n    return a < b ? -1 : 1;\n  }\n  // `a` and `b` are of different types. Compare their string values.\n  const aString = String(a);\n  const bString = String(b);\n  return aString == bString ? 0 : aString < bString ? -1 : 1;\n}\n"]}