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13 kBJavaScriptView Raw
1/**
2 * @license
3 * Copyright Google LLC All Rights Reserved.
4 *
5 * Use of this source code is governed by an MIT-style license that can be
6 * found in the LICENSE file at https://angular.io/license
7 */
8import { Inject, Injectable, PLATFORM_ID } from '@angular/core';
9import { isPlatformBrowser } from '@angular/common';
10import * as i0 from "@angular/core";
11// Whether the current platform supports the V8 Break Iterator. The V8 check
12// is necessary to detect all Blink based browsers.
13let hasV8BreakIterator;
14// We need a try/catch around the reference to `Intl`, because accessing it in some cases can
15// cause IE to throw. These cases are tied to particular versions of Windows and can happen if
16// the consumer is providing a polyfilled `Map`. See:
17// https://github.com/Microsoft/ChakraCore/issues/3189
18// https://github.com/angular/components/issues/15687
19try {
20 hasV8BreakIterator = typeof Intl !== 'undefined' && Intl.v8BreakIterator;
21}
22catch {
23 hasV8BreakIterator = false;
24}
25/**
26 * Service to detect the current platform by comparing the userAgent strings and
27 * checking browser-specific global properties.
28 */
29class Platform {
30 constructor(_platformId) {
31 this._platformId = _platformId;
32 // We want to use the Angular platform check because if the Document is shimmed
33 // without the navigator, the following checks will fail. This is preferred because
34 // sometimes the Document may be shimmed without the user's knowledge or intention
35 /** Whether the Angular application is being rendered in the browser. */
36 this.isBrowser = this._platformId
37 ? isPlatformBrowser(this._platformId)
38 : typeof document === 'object' && !!document;
39 /** Whether the current browser is Microsoft Edge. */
40 this.EDGE = this.isBrowser && /(edge)/i.test(navigator.userAgent);
41 /** Whether the current rendering engine is Microsoft Trident. */
42 this.TRIDENT = this.isBrowser && /(msie|trident)/i.test(navigator.userAgent);
43 // EdgeHTML and Trident mock Blink specific things and need to be excluded from this check.
44 /** Whether the current rendering engine is Blink. */
45 this.BLINK = this.isBrowser &&
46 !!(window.chrome || hasV8BreakIterator) &&
47 typeof CSS !== 'undefined' &&
48 !this.EDGE &&
49 !this.TRIDENT;
50 // Webkit is part of the userAgent in EdgeHTML, Blink and Trident. Therefore we need to
51 // ensure that Webkit runs standalone and is not used as another engine's base.
52 /** Whether the current rendering engine is WebKit. */
53 this.WEBKIT = this.isBrowser &&
54 /AppleWebKit/i.test(navigator.userAgent) &&
55 !this.BLINK &&
56 !this.EDGE &&
57 !this.TRIDENT;
58 /** Whether the current platform is Apple iOS. */
59 this.IOS = this.isBrowser && /iPad|iPhone|iPod/.test(navigator.userAgent) && !('MSStream' in window);
60 // It's difficult to detect the plain Gecko engine, because most of the browsers identify
61 // them self as Gecko-like browsers and modify the userAgent's according to that.
62 // Since we only cover one explicit Firefox case, we can simply check for Firefox
63 // instead of having an unstable check for Gecko.
64 /** Whether the current browser is Firefox. */
65 this.FIREFOX = this.isBrowser && /(firefox|minefield)/i.test(navigator.userAgent);
66 /** Whether the current platform is Android. */
67 // Trident on mobile adds the android platform to the userAgent to trick detections.
68 this.ANDROID = this.isBrowser && /android/i.test(navigator.userAgent) && !this.TRIDENT;
69 // Safari browsers will include the Safari keyword in their userAgent. Some browsers may fake
70 // this and just place the Safari keyword in the userAgent. To be more safe about Safari every
71 // Safari browser should also use Webkit as its layout engine.
72 /** Whether the current browser is Safari. */
73 this.SAFARI = this.isBrowser && /safari/i.test(navigator.userAgent) && this.WEBKIT;
74 }
75 static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: Platform, deps: [{ token: PLATFORM_ID }], target: i0.ɵɵFactoryTarget.Injectable }); }
76 static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: Platform, providedIn: 'root' }); }
77}
78export { Platform };
79i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: Platform, decorators: [{
80 type: Injectable,
81 args: [{ providedIn: 'root' }]
82 }], ctorParameters: function () { return [{ type: Object, decorators: [{
83 type: Inject,
84 args: [PLATFORM_ID]
85 }] }]; } });
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The V8 check\n// is necessary to detect all Blink based browsers.\nlet hasV8BreakIterator: boolean;\n\n// We need a try/catch around the reference to `Intl`, because accessing it in some cases can\n// cause IE to throw. These cases are tied to particular versions of Windows and can happen if\n// the consumer is providing a polyfilled `Map`. See:\n// https://github.com/Microsoft/ChakraCore/issues/3189\n// https://github.com/angular/components/issues/15687\ntry {\n  hasV8BreakIterator = typeof Intl !== 'undefined' && (Intl as any).v8BreakIterator;\n} catch {\n  hasV8BreakIterator = false;\n}\n\n/**\n * Service to detect the current platform by comparing the userAgent strings and\n * checking browser-specific global properties.\n */\n@Injectable({providedIn: 'root'})\nexport class Platform {\n  // We want to use the Angular platform check because if the Document is shimmed\n  // without the navigator, the following checks will fail. This is preferred because\n  // sometimes the Document may be shimmed without the user's knowledge or intention\n  /** Whether the Angular application is being rendered in the browser. */\n  isBrowser: boolean = this._platformId\n    ? isPlatformBrowser(this._platformId)\n    : typeof document === 'object' && !!document;\n\n  /** Whether the current browser is Microsoft Edge. */\n  EDGE: boolean = this.isBrowser && /(edge)/i.test(navigator.userAgent);\n\n  /** Whether the current rendering engine is Microsoft Trident. */\n  TRIDENT: boolean = this.isBrowser && /(msie|trident)/i.test(navigator.userAgent);\n\n  // EdgeHTML and Trident mock Blink specific things and need to be excluded from this check.\n  /** Whether the current rendering engine is Blink. */\n  BLINK: boolean =\n    this.isBrowser &&\n    !!((window as any).chrome || hasV8BreakIterator) &&\n    typeof CSS !== 'undefined' &&\n    !this.EDGE &&\n    !this.TRIDENT;\n\n  // Webkit is part of the userAgent in EdgeHTML, Blink and Trident. Therefore we need to\n  // ensure that Webkit runs standalone and is not used as another engine's base.\n  /** Whether the current rendering engine is WebKit. */\n  WEBKIT: boolean =\n    this.isBrowser &&\n    /AppleWebKit/i.test(navigator.userAgent) &&\n    !this.BLINK &&\n    !this.EDGE &&\n    !this.TRIDENT;\n\n  /** Whether the current platform is Apple iOS. */\n  IOS: boolean =\n    this.isBrowser && /iPad|iPhone|iPod/.test(navigator.userAgent) && !('MSStream' in window);\n\n  // It's difficult to detect the plain Gecko engine, because most of the browsers identify\n  // them self as Gecko-like browsers and modify the userAgent's according to that.\n  // Since we only cover one explicit Firefox case, we can simply check for Firefox\n  // instead of having an unstable check for Gecko.\n  /** Whether the current browser is Firefox. */\n  FIREFOX: boolean = this.isBrowser && /(firefox|minefield)/i.test(navigator.userAgent);\n\n  /** Whether the current platform is Android. */\n  // Trident on mobile adds the android platform to the userAgent to trick detections.\n  ANDROID: boolean = this.isBrowser && /android/i.test(navigator.userAgent) && !this.TRIDENT;\n\n  // Safari browsers will include the Safari keyword in their userAgent. Some browsers may fake\n  // this and just place the Safari keyword in the userAgent. To be more safe about Safari every\n  // Safari browser should also use Webkit as its layout engine.\n  /** Whether the current browser is Safari. */\n  SAFARI: boolean = this.isBrowser && /safari/i.test(navigator.userAgent) && this.WEBKIT;\n\n  constructor(@Inject(PLATFORM_ID) private _platformId: Object) {}\n}\n"]}
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