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Angular - commonly needed directives and services

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/** * @fileoverview added by tsickle * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc */ /** * @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 */ /** * @record */ function Update() { } if (false) { /** @type {?} */ Update.prototype.name; /** @type {?|undefined} */ Update.prototype.value; /** @type {?} */ Update.prototype.op; } /** * Represents the header configuration options for an HTTP request. * * Instances should be assumed immutable with lazy parsing. * * \@publicApi */ export class HttpHeaders { /** * Constructs a new HTTP header object with the given values. * @param {?=} headers */ constructor(headers) { /** * Internal map of lowercased header names to the normalized * form of the name (the form seen first). */ this.normalizedNames = new Map(); /** * Queued updates to be materialized the next initialization. */ this.lazyUpdate = null; if (!headers) { this.headers = new Map(); } else if (typeof headers === 'string') { this.lazyInit = (/** * @return {?} */ () => { this.headers = new Map(); headers.split('\n').forEach((/** * @param {?} line * @return {?} */ line => { /** @type {?} */ const index = line.indexOf(':'); if (index > 0) { /** @type {?} */ const name = line.slice(0, index); /** @type {?} */ const key = name.toLowerCase(); /** @type {?} */ const value = line.slice(index + 1).trim(); this.maybeSetNormalizedName(name, key); if (this.headers.has(key)) { (/** @type {?} */ (this.headers.get(key))).push(value); } else { this.headers.set(key, [value]); } } })); }); } else { this.lazyInit = (/** * @return {?} */ () => { this.headers = new Map(); Object.keys(headers).forEach((/** * @param {?} name * @return {?} */ name => { /** @type {?} */ let values = headers[name]; /** @type {?} */ const key = name.toLowerCase(); if (typeof values === 'string') { values = [values]; } if (values.length > 0) { this.headers.set(key, values); this.maybeSetNormalizedName(name, key); } })); }); } } /** * Checks for existence of a header by a given name. * * @param {?} name The header name to check for existence. * * @return {?} Whether the header exits. */ has(name) { this.init(); return this.headers.has(name.toLowerCase()); } /** * Retrieves the first header value that matches a given name. * * @param {?} name The header name to retrieve. * * @return {?} A string if the header exists, null otherwise */ get(name) { this.init(); /** @type {?} */ const values = this.headers.get(name.toLowerCase()); return values && values.length > 0 ? values[0] : null; } /** * Retrieves the names of the headers. * * @return {?} A list of header names. */ keys() { this.init(); return Array.from(this.normalizedNames.values()); } /** * Retrieves a list of header values for a given header name. * * @param {?} name The header name from which to retrieve the values. * * @return {?} A string of values if the header exists, null otherwise. */ getAll(name) { this.init(); return this.headers.get(name.toLowerCase()) || null; } /** * Appends a new header value to the existing set of * header values. * * @param {?} name The header name for which to append the values. * * @param {?} value * @return {?} A clone of the HTTP header object with the value appended. */ append(name, value) { return this.clone({ name, value, op: 'a' }); } /** * Sets a header value for a given name. If the header name already exists, * its value is replaced with the given value. * * @param {?} name The header name. * @param {?} value The value to set or overide for a given name. * * @return {?} A clone of the HTTP header object with the newly set header value. */ set(name, value) { return this.clone({ name, value, op: 's' }); } /** * Deletes all header values for a given name. * * @param {?} name The header name. * @param {?=} value The header values to delete for a given name. * * @return {?} A clone of the HTTP header object. */ delete(name, value) { return this.clone({ name, value, op: 'd' }); } /** * @private * @param {?} name * @param {?} lcName * @return {?} */ maybeSetNormalizedName(name, lcName) { if (!this.normalizedNames.has(lcName)) { this.normalizedNames.set(lcName, name); } } /** * @private * @return {?} */ init() { if (!!this.lazyInit) { if (this.lazyInit instanceof HttpHeaders) { this.copyFrom(this.lazyInit); } else { this.lazyInit(); } this.lazyInit = null; if (!!this.lazyUpdate) { this.lazyUpdate.forEach((/** * @param {?} update * @return {?} */ update => this.applyUpdate(update))); this.lazyUpdate = null; } } } /** * @private * @param {?} other * @return {?} */ copyFrom(other) { other.init(); Array.from(other.headers.keys()).forEach((/** * @param {?} key * @return {?} */ key => { this.headers.set(key, (/** @type {?} */ (other.headers.get(key)))); this.normalizedNames.set(key, (/** @type {?} */ (other.normalizedNames.get(key)))); })); } /** * @private * @param {?} update * @return {?} */ clone(update) { /** @type {?} */ const clone = new HttpHeaders(); clone.lazyInit = (!!this.lazyInit && this.lazyInit instanceof HttpHeaders) ? this.lazyInit : this; clone.lazyUpdate = (this.lazyUpdate || []).concat([update]); return clone; } /** * @private * @param {?} update * @return {?} */ applyUpdate(update) { /** @type {?} */ const key = update.name.toLowerCase(); switch (update.op) { case 'a': case 's': /** @type {?} */ let value = (/** @type {?} */ (update.value)); if (typeof value === 'string') { value = [value]; } if (value.length === 0) { return; } this.maybeSetNormalizedName(update.name, key); /** @type {?} */ const base = (update.op === 'a' ? this.headers.get(key) : undefined) || []; base.push(...value); this.headers.set(key, base); break; case 'd': /** @type {?} */ const toDelete = (/** @type {?} */ (update.value)); if (!toDelete) { this.headers.delete(key); this.normalizedNames.delete(key); } else { /** @type {?} */ let existing = this.headers.get(key); if (!existing) { return; } existing = existing.filter((/** * @param {?} value * @return {?} */ value => toDelete.indexOf(value) === -1)); if (existing.length === 0) { this.headers.delete(key); this.normalizedNames.delete(key); } else { this.headers.set(key, existing); } } break; } } /** * \@internal * @param {?} fn * @return {?} */ forEach(fn) { this.init(); Array.from(this.normalizedNames.keys()) .forEach((/** * @param {?} key * @return {?} */ key => fn((/** @type {?} */ (this.normalizedNames.get(key))), (/** @type {?} */ (this.headers.get(key)))))); } } if (false) { /** * Internal map of lowercase header names to values. * @type {?} * @private */ HttpHeaders.prototype.headers; /** * Internal map of lowercased header names to the normalized * form of the name (the form seen first). * @type {?} * @private */ HttpHeaders.prototype.normalizedNames; /** * Complete the lazy initialization of this object (needed before reading). * @type {?} * @private */ HttpHeaders.prototype.lazyInit; /** * Queued updates to be materialized the next initialization. * @type {?} * @private */ HttpHeaders.prototype.lazyUpdate; } //# 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* @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\ninterface Update {\n  name: string;\n  value?: string|string[];\n  op: 'a'|'s'|'d';\n}\n\n/**\n * Represents the header configuration options for an HTTP request.\n *\n * Instances should be assumed immutable with lazy parsing.\n *\n * @publicApi\n */\nexport class HttpHeaders {\n  /**\n   * Internal map of lowercase header names to values.\n   */\n  // TODO(issue/24571): remove '!'.\n  private headers !: Map<string, string[]>;\n\n\n  /**\n   * Internal map of lowercased header names to the normalized\n   * form of the name (the form seen first).\n   */\n  private normalizedNames: Map<string, string> = new Map();\n\n  /**\n   * Complete the lazy initialization of this object (needed before reading).\n   */\n  private lazyInit !: HttpHeaders | Function | null;\n\n  /**\n   * Queued updates to be materialized the next initialization.\n   */\n  private lazyUpdate: Update[]|null = null;\n\n  /**  Constructs a new HTTP header object with the given values.*/\n\n  constructor(headers?: string|{[name: string]: string | string[]}) {\n    if (!headers) {\n      this.headers = new Map<string, string[]>();\n    } else if (typeof headers === 'string') {\n      this.lazyInit = () => {\n        this.headers = new Map<string, string[]>();\n        headers.split('\\n').forEach(line => {\n          const index = line.indexOf(':');\n          if (index > 0) {\n            const name = line.slice(0, index);\n            const key = name.toLowerCase();\n            const value = line.slice(index + 1).trim();\n            this.maybeSetNormalizedName(name, key);\n            if (this.headers.has(key)) {\n              this.headers.get(key) !.push(value);\n            } else {\n              this.headers.set(key, [value]);\n            }\n          }\n        });\n      };\n    } else {\n      this.lazyInit = () => {\n        this.headers = new Map<string, string[]>();\n        Object.keys(headers).forEach(name => {\n          let values: string|string[] = headers[name];\n          const key = name.toLowerCase();\n          if (typeof values === 'string') {\n            values = [values];\n          }\n          if (values.length > 0) {\n            this.headers.set(key, values);\n            this.maybeSetNormalizedName(name, key);\n          }\n        });\n      };\n    }\n  }\n\n  /**\n   * Checks for existence of a header by a given name.\n   *\n   * @param name The header name to check for existence.\n   *\n   * @returns Whether the header exits.\n   */\n  has(name: string): boolean {\n    this.init();\n\n    return this.headers.has(name.toLowerCase());\n  }\n\n  /**\n   * Retrieves the first header value that matches a given name.\n   *\n   * @param name The header name to retrieve.\n   *\n   * @returns A string if the header exists, null otherwise\n   */\n  get(name: string): string|null {\n    this.init();\n\n    const values = this.headers.get(name.toLowerCase());\n    return values && values.length > 0 ? values[0] : null;\n  }\n\n  /**\n   * Retrieves the names of the headers.\n   *\n   * @returns A list of header names.\n   */\n  keys(): string[] {\n    this.init();\n\n    return Array.from(this.normalizedNames.values());\n  }\n\n  /**\n   * Retrieves a list of header values for a given header name.\n   *\n   * @param name The header name from which to retrieve the values.\n   *\n   * @returns A string of values if the header exists, null otherwise.\n   */\n  getAll(name: string): string[]|null {\n    this.init();\n\n    return this.headers.get(name.toLowerCase()) || null;\n  }\n\n  /**\n   * Appends a new header value to the existing set of\n   * header values.\n   *\n   * @param name The header name for which to append the values.\n   *\n   * @returns A clone of the HTTP header object with the value appended.\n   */\n\n  append(name: string, value: string|string[]): HttpHeaders {\n    return this.clone({name, value, op: 'a'});\n  }\n  /**\n   * Sets a header value for a given name. If the header name already exists,\n   * its value is replaced with the given value.\n   *\n   * @param name The header name.\n   * @param value The value to set or overide for a given name.\n   *\n   * @returns A clone of the HTTP header object with the newly set header value.\n   */\n  set(name: string, value: string|string[]): HttpHeaders {\n    return this.clone({name, value, op: 's'});\n  }\n  /**\n   * Deletes all header values for a given name.\n   *\n   * @param name The header name.\n   * @param value The header values to delete for a given name.\n   *\n   * @returns A clone of the HTTP header object.\n   */\n  delete (name: string, value?: string|string[]): HttpHeaders {\n    return this.clone({name, value, op: 'd'});\n  }\n\n  private maybeSetNormalizedName(name: string, lcName: string): void {\n    if (!this.normalizedNames.has(lcName)) {\n      this.normalizedNames.set(lcName, name);\n    }\n  }\n\n  private init(): void {\n    if (!!this.lazyInit) {\n      if (this.lazyInit instanceof HttpHeaders) {\n        this.copyFrom(this.lazyInit);\n      } else {\n        this.lazyInit();\n      }\n      this.lazyInit = null;\n      if (!!this.lazyUpdate) {\n        this.lazyUpdate.forEach(update => this.applyUpdate(update));\n        this.lazyUpdate = null;\n      }\n    }\n  }\n\n  private copyFrom(other: HttpHeaders) {\n    other.init();\n    Array.from(other.headers.keys()).forEach(key => {\n      this.headers.set(key, other.headers.get(key) !);\n      this.normalizedNames.set(key, other.normalizedNames.get(key) !);\n    });\n  }\n\n  private clone(update: Update): HttpHeaders {\n    const clone = new HttpHeaders();\n    clone.lazyInit =\n        (!!this.lazyInit && this.lazyInit instanceof HttpHeaders) ? this.lazyInit : this;\n    clone.lazyUpdate = (this.lazyUpdate || []).concat([update]);\n    return clone;\n  }\n\n  private applyUpdate(update: Update): void {\n    const key = update.name.toLowerCase();\n    switch (update.op) {\n      case 'a':\n      case 's':\n        let value = update.value !;\n        if (typeof value === 'string') {\n          value = [value];\n        }\n        if (value.length === 0) {\n          return;\n        }\n        this.maybeSetNormalizedName(update.name, key);\n        const base = (update.op === 'a' ? this.headers.get(key) : undefined) || [];\n        base.push(...value);\n        this.headers.set(key, base);\n        break;\n      case 'd':\n        const toDelete = update.value as string | undefined;\n        if (!toDelete) {\n          this.headers.delete(key);\n          this.normalizedNames.delete(key);\n        } else {\n          let existing = this.headers.get(key);\n          if (!existing) {\n            return;\n          }\n          existing = existing.filter(value => toDelete.indexOf(value) === -1);\n          if (existing.length === 0) {\n            this.headers.delete(key);\n            this.normalizedNames.delete(key);\n          } else {\n            this.headers.set(key, existing);\n          }\n        }\n        break;\n    }\n  }\n\n  /**\n   * @internal\n   */\n  forEach(fn: (name: string, values: string[]) => void) {\n    this.init();\n    Array.from(this.normalizedNames.keys())\n        .forEach(key => fn(this.normalizedNames.get(key) !, this.headers.get(key) !));\n  }\n}\n"]}