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ng-zorro-antd

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An enterprise-class UI components based on Ant Design and Angular

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/** * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE */ import { DOCUMENT } from '@angular/common'; import { Injectable, inject } from '@angular/core'; import { reqAnimFrame } from 'ng-zorro-antd/core/polyfill'; import * as i0 from "@angular/core"; function easeInOutCubic(t, b, c, d) { const cc = c - b; let tt = t / (d / 2); if (tt < 1) { return (cc / 2) * tt * tt * tt + b; } else { return (cc / 2) * ((tt -= 2) * tt * tt + 2) + b; } } export class NzScrollService { constructor(ngZone) { this.ngZone = ngZone; this.doc = inject(DOCUMENT); } /** Set the position of the scroll bar of `el`. */ setScrollTop(el, topValue = 0) { if (el === window) { this.doc.body.scrollTop = topValue; this.doc.documentElement.scrollTop = topValue; } else { el.scrollTop = topValue; } } /** Get position of `el` against window. */ getOffset(el) { const ret = { top: 0, left: 0 }; if (!el || !el.getClientRects().length) { return ret; } const rect = el.getBoundingClientRect(); if (rect.width || rect.height) { const doc = el.ownerDocument.documentElement; ret.top = rect.top - doc.clientTop; ret.left = rect.left - doc.clientLeft; } else { ret.top = rect.top; ret.left = rect.left; } return ret; } /** Get the position of the scoll bar of `el`. */ // TODO: remove '| Window' as the fallback already happens here getScroll(target, top = true) { if (typeof window === 'undefined') { return 0; } const method = top ? 'scrollTop' : 'scrollLeft'; let result = 0; if (this.isWindow(target)) { result = target[top ? 'pageYOffset' : 'pageXOffset']; } else if (target instanceof Document) { result = target.documentElement[method]; } else if (target) { result = target[method]; } if (target && !this.isWindow(target) && typeof result !== 'number') { result = (target.ownerDocument || target).documentElement[method]; } return result; } isWindow(obj) { return obj !== null && obj !== undefined && obj === obj.window; } /** * Scroll `el` to some position with animation. * * @param containerEl container, `window` by default * @param y Scroll to `top`, 0 by default */ scrollTo(containerEl, y = 0, options = {}) { const target = containerEl ? containerEl : window; const scrollTop = this.getScroll(target); const startTime = Date.now(); const { easing, callback, duration = 450 } = options; const frameFunc = () => { const timestamp = Date.now(); const time = timestamp - startTime; const nextScrollTop = (easing || easeInOutCubic)(time > duration ? duration : time, scrollTop, y, duration); if (this.isWindow(target)) { target.scrollTo(window.pageXOffset, nextScrollTop); } else if (target instanceof HTMLDocument || target.constructor.name === 'HTMLDocument') { target.documentElement.scrollTop = nextScrollTop; } else { target.scrollTop = nextScrollTop; } if (time < duration) { reqAnimFrame(frameFunc); } else if (typeof callback === 'function') { // Caretaker note: the `frameFunc` is called within the `<root>` zone, but we have to re-enter // the Angular zone when calling custom callback to be backwards-compatible. this.ngZone.run(callback); } }; // Caretaker note: the `requestAnimationFrame` triggers change detection, but updating a `scrollTop` property or // calling `window.scrollTo` doesn't require Angular to run `ApplicationRef.tick()`. this.ngZone.runOutsideAngular(() => reqAnimFrame(frameFunc)); } static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.1", ngImport: i0, type: NzScrollService, deps: [{ token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Injectable }); } static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.1", ngImport: i0, type: NzScrollService, providedIn: 'root' }); } } i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.1", ngImport: i0, type: NzScrollService, decorators: [{ type: Injectable, args: [{ providedIn: 'root' }] }], ctorParameters: () => [{ type: i0.NgZone }] }); //# 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* Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport { DOCUMENT } from '@angular/common';\nimport { Injectable, NgZone, inject } from '@angular/core';\n\nimport { reqAnimFrame } from 'ng-zorro-antd/core/polyfill';\nimport { NzSafeAny } from 'ng-zorro-antd/core/types';\n\nexport type EasyingFn = (t: number, b: number, c: number, d: number) => number;\n\nfunction easeInOutCubic(t: number, b: number, c: number, d: number): number {\n  const cc = c - b;\n  let tt = t / (d / 2);\n  if (tt < 1) {\n    return (cc / 2) * tt * tt * tt + b;\n  } else {\n    return (cc / 2) * ((tt -= 2) * tt * tt + 2) + b;\n  }\n}\n\nexport interface NzScrollToOptions {\n  /** Scroll container, default as window */\n  easing?: EasyingFn;\n  /** Scroll end callback */\n  callback?(): void;\n  /** Animation duration, default as 450 */\n  duration?: number;\n}\n\n@Injectable({\n  providedIn: 'root'\n})\nexport class NzScrollService {\n  private doc: Document = inject(DOCUMENT);\n\n  constructor(private ngZone: NgZone) {}\n\n  /** Set the position of the scroll bar of `el`. */\n  setScrollTop(el: Element | Window, topValue: number = 0): void {\n    if (el === window) {\n      this.doc.body.scrollTop = topValue;\n      this.doc.documentElement!.scrollTop = topValue;\n    } else {\n      (el as Element).scrollTop = topValue;\n    }\n  }\n\n  /** Get position of `el` against window. */\n  getOffset(el: Element): { top: number; left: number } {\n    const ret = {\n      top: 0,\n      left: 0\n    };\n    if (!el || !el.getClientRects().length) {\n      return ret;\n    }\n\n    const rect = el.getBoundingClientRect();\n    if (rect.width || rect.height) {\n      const doc = el.ownerDocument!.documentElement;\n      ret.top = rect.top - doc!.clientTop;\n      ret.left = rect.left - doc!.clientLeft;\n    } else {\n      ret.top = rect.top;\n      ret.left = rect.left;\n    }\n\n    return ret;\n  }\n\n  /** Get the position of the scoll bar of `el`. */\n  // TODO: remove '| Window' as the fallback already happens here\n  getScroll(target?: Element | HTMLElement | Window | Document | null, top: boolean = true): number {\n    if (typeof window === 'undefined') {\n      return 0;\n    }\n    const method = top ? 'scrollTop' : 'scrollLeft';\n    let result = 0;\n    if (this.isWindow(target)) {\n      result = (target as Window)[top ? 'pageYOffset' : 'pageXOffset'];\n    } else if (target instanceof Document) {\n      result = target.documentElement[method];\n    } else if (target) {\n      result = (target as HTMLElement)[method];\n    }\n    if (target && !this.isWindow(target) && typeof result !== 'number') {\n      result = ((target as HTMLElement).ownerDocument || (target as Document)).documentElement[method];\n    }\n    return result;\n  }\n\n  isWindow(obj: NzSafeAny): boolean {\n    return obj !== null && obj !== undefined && obj === obj.window;\n  }\n\n  /**\n   * Scroll `el` to some position with animation.\n   *\n   * @param containerEl container, `window` by default\n   * @param y Scroll to `top`, 0 by default\n   */\n  scrollTo(\n    containerEl?: Element | HTMLElement | Window | Document | null,\n    y: number = 0,\n    options: NzScrollToOptions = {}\n  ): void {\n    const target = containerEl ? containerEl : window;\n    const scrollTop = this.getScroll(target);\n    const startTime = Date.now();\n    const { easing, callback, duration = 450 } = options;\n    const frameFunc = (): void => {\n      const timestamp = Date.now();\n      const time = timestamp - startTime;\n      const nextScrollTop = (easing || easeInOutCubic)(time > duration ? duration : time, scrollTop, y, duration);\n      if (this.isWindow(target)) {\n        (target as Window).scrollTo(window.pageXOffset, nextScrollTop);\n      } else if (target instanceof HTMLDocument || target.constructor.name === 'HTMLDocument') {\n        (target as HTMLDocument).documentElement.scrollTop = nextScrollTop;\n      } else {\n        (target as HTMLElement).scrollTop = nextScrollTop;\n      }\n      if (time < duration) {\n        reqAnimFrame(frameFunc);\n      } else if (typeof callback === 'function') {\n        // Caretaker note: the `frameFunc` is called within the `<root>` zone, but we have to re-enter\n        // the Angular zone when calling custom callback to be backwards-compatible.\n        this.ngZone.run(callback);\n      }\n    };\n    // Caretaker note: the `requestAnimationFrame` triggers change detection, but updating a `scrollTop` property or\n    // calling `window.scrollTo` doesn't require Angular to run `ApplicationRef.tick()`.\n    this.ngZone.runOutsideAngular(() => reqAnimFrame(frameFunc));\n  }\n}\n"]}