ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
165 lines • 13.5 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { DOCUMENT } from '@angular/common';
import { Inject, Injectable, Optional, SkipSelf } from '@angular/core';
import { reqAnimFrame } from '../polyfill/request-animation';
/**
* @param {?} t
* @param {?} b
* @param {?} c
* @param {?} d
* @return {?}
*/
function easeInOutCubic(t, b, c, d) {
/** @type {?} */
const cc = c - b;
/** @type {?} */
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 {
/* tslint:disable-next-line:no-any */
/**
* @param {?} doc
*/
constructor(doc) {
this.doc = doc;
}
/**
* 设置 `el` 滚动条位置
* @param {?} el
* @param {?=} topValue
* @return {?}
*/
setScrollTop(el, topValue = 0) {
if (el === window) {
this.doc.body.scrollTop = topValue;
this.doc.documentElement.scrollTop = topValue;
}
else {
((/** @type {?} */ (el))).scrollTop = topValue;
}
}
/**
* 获取 `el` 相对于视窗距离
* @param {?} el
* @return {?}
*/
getOffset(el) {
/** @type {?} */
const ret = {
top: 0,
left: 0
};
if (!el || !el.getClientRects().length)
return ret;
/** @type {?} */
const rect = el.getBoundingClientRect();
if (rect.width || rect.height) {
/** @type {?} */
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;
}
/**
* 获取 `el` 滚动条位置
* @param {?=} el
* @param {?=} top
* @return {?}
*/
// TODO: remove '| Window' as the fallback already happens here
getScroll(el, top = true) {
/** @type {?} */
const target = el ? el : window;
/** @type {?} */
const prop = top ? 'pageYOffset' : 'pageXOffset';
/** @type {?} */
const method = top ? 'scrollTop' : 'scrollLeft';
/** @type {?} */
const isWindow = target === window;
/** @type {?} */
let ret = isWindow ? target[prop] : target[method];
if (isWindow && typeof ret !== 'number') {
ret = this.doc.documentElement[method];
}
return ret;
}
/**
* 使用动画形式将 `el` 滚动至某位置
*
* @param {?} containerEl 容器,默认 `window`
* @param {?=} targetTopValue 滚动至目标 `top` 值,默认:0,相当于顶部
* @param {?=} easing 动作算法,默认:`easeInOutCubic`
* @param {?=} callback 动画结束后回调
* @return {?}
*/
scrollTo(containerEl, targetTopValue = 0, easing, callback) {
/** @type {?} */
const target = containerEl ? containerEl : window;
/** @type {?} */
const scrollTop = this.getScroll(target);
/** @type {?} */
const startTime = Date.now();
/** @type {?} */
const frameFunc = (/**
* @return {?}
*/
() => {
/** @type {?} */
const timestamp = Date.now();
/** @type {?} */
const time = timestamp - startTime;
this.setScrollTop(target, (easing || easeInOutCubic)(time, scrollTop, targetTopValue, 450));
if (time < 450) {
reqAnimFrame(frameFunc);
}
else {
if (callback)
callback();
}
});
reqAnimFrame(frameFunc);
}
}
NzScrollService.decorators = [
{ type: Injectable }
];
/** @nocollapse */
NzScrollService.ctorParameters = () => [
{ type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }
];
if (false) {
/**
* @type {?}
* @private
*/
NzScrollService.prototype.doc;
}
/**
* @param {?} doc
* @param {?} scrollService
* @return {?}
*/
export function SCROLL_SERVICE_PROVIDER_FACTORY(doc, scrollService) {
return scrollService || new NzScrollService(doc);
}
/** @type {?} */
export const SCROLL_SERVICE_PROVIDER = {
provide: NzScrollService,
useFactory: SCROLL_SERVICE_PROVIDER_FACTORY,
deps: [DOCUMENT, [new Optional(), new SkipSelf(), NzScrollService]]
};
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'pageYOffset' : 'pageXOffset';\n    const method = top ? 'scrollTop' : 'scrollLeft';\n    const isWindow = target === window;\n    let ret = isWindow ? target[ prop ] : target[ method ];\n    if (isWindow && typeof ret !== 'number') {\n      ret = this.doc.documentElement[ method ];\n    }\n    return ret;\n  }\n\n  /**\n   * 使用动画形式将 `el` 滚动至某位置\n   *\n   * @param containerEl 容器，默认 `window`\n   * @param targetTopValue 滚动至目标 `top` 值，默认：0，相当于顶部\n   * @param easing 动作算法，默认：`easeInOutCubic`\n   * @param callback 动画结束后回调\n   */\n  scrollTo(\n    containerEl: Element | Window,\n    targetTopValue: number = 0,\n    easing?: EasyingFn,\n    callback?: () => void\n  ): void {\n    const target = containerEl ? containerEl : window;\n    const scrollTop = this.getScroll(target);\n    const startTime = Date.now();\n    const frameFunc = () => {\n      const timestamp = Date.now();\n      const time = timestamp - startTime;\n      this.setScrollTop(target, (easing || easeInOutCubic)(time, scrollTop, targetTopValue, 450));\n      if (time < 450) {\n        reqAnimFrame(frameFunc);\n      } else {\n        if (callback) callback();\n      }\n    };\n    reqAnimFrame(frameFunc);\n  }\n\n}\n\nexport function SCROLL_SERVICE_PROVIDER_FACTORY(doc: Document, scrollService: NzScrollService): NzScrollService {\n  return scrollService || new NzScrollService(doc);\n}\n\nexport const SCROLL_SERVICE_PROVIDER: Provider = {\n  provide   : NzScrollService,\n  useFactory: SCROLL_SERVICE_PROVIDER_FACTORY,\n  deps      : [ DOCUMENT, [ new Optional(), new SkipSelf(), NzScrollService ] ]\n};\n"]}