ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
129 lines • 16.7 kB
JavaScript
/**
* 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 { Inject, Injectable } 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, doc) {
this.ngZone = ngZone;
this.doc = doc;
}
/** 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: "17.0.7", ngImport: i0, type: NzScrollService, deps: [{ token: i0.NgZone }, { token: DOCUMENT }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.0.7", ngImport: i0, type: NzScrollService, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.0.7", ngImport: i0, type: NzScrollService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}], ctorParameters: () => [{ type: i0.NgZone }, { type: undefined, decorators: [{
type: Inject,
args: [DOCUMENT]
}] }] });
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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;\n\n  constructor(\n    private ngZone: NgZone,\n    @Inject(DOCUMENT) doc: NzSafeAny\n  ) {\n    this.doc = doc;\n  }\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"]}