平滑滚动角度2

我有麻烦得到一个平滑的滚动服务工作在角度2.有没有任何服务平滑滚动,或平滑的锚定滚动,可能会有效,直到角度2团队得到$anchorScroll angular2等效工作？

到目前为止,我刚刚尝试过：

在父div上设置* ngFor循环增量id

[attr.id]="'point' + i"

在id通过的按钮上调用滚动条

<button 
     type="button" 
     class="btn btn-lg btn-default " 
     (click)="smoothScroll('point'+i)">
           Scroll to point
</button>

在相关组件中,我试图实现一个简单的js平滑滚动功能

smoothScroll(eID) {
        var startY = currentYPosition();
        var stopY = elmYPosition(eID);
        var distance = stopY > startY ? stopY - startY : startY - stopY;
        if (distance < 100) {
            scrollTo(0,stopY); return;
        }
        var speed = Math.round(distance / 100);
        if (speed >= 20) speed = 20;
        var step = Math.round(distance / 25);
        var leapY = stopY > startY ? startY + step : startY - step;
        var timer = 0;
        if (stopY > startY) {
            for (var i = startY; i < stopY; i += step) {
                setTimeout(this.win.scrollTo(0,leapY),timer * speed);
                leapY += step; if (leapY > stopY) leapY = stopY; timer++;
            } return;
        }
        for (var i = startY; i > stopY; i -= step) {
            setTimeout(this.win.scrollTo(0,timer * speed);
            leapY -= step; if (leapY < stopY) leapY = stopY; timer++;
        }
    }
function currentYPosition() {
    // Firefox,Chrome,Opera,Safari
    if (self.pageYOffset) return self.pageYOffset;
    // Internet Explorer 6 - standards mode
    if (document.documentElement && document.documentElement.scrollTop)
        return document.documentElement.scrollTop;
    // Internet Explorer 6,7 and 8
    if (document.body.scrollTop) return document.body.scrollTop;
    return 0;
}
function elmYPosition(eID) {
    var elm = document.getElementById(eID);
    var y = elm.offsetTop;
    var node = elm;
    while (node.offsetParent && node.offsetParent != document.body) {
        node = node.offsetParent;
        y += node.offsetTop;
    } return y;
}

我也试图访问窗口提供者服务的this._win.scrollTo的窗口

import {Injectable,Provider} from 'angular2/core';
import {window} from 'angular2/src/facade/browser';
import {unimplemented} from 'angular2/src/facade/exceptions';

function _window(): Window {
  return window
}

export abstract class WINDOW {
  get nativeWindow(): Window {
    return unimplemented();
  }
}

class WindowRef_ extends WINDOW {
  constructor() {
    super();
  }
  get nativeWindow(): Window {
    return _window();
  }
}

export const WINDOW_PROVIDERS = [
  new Provider(WINDOW,{ useClass: WindowRef_ }),];

**编辑
——————— **

我将this.win.scrollTo更改为this.win.window.scrollTo,现在我得到类似于angular1.x $anchorscroll的效果,其中滚动是一个snappy,而不是一个平滑的过渡,但滚动不顺利,我收到以下异常错误.

UPDATE

发现angle2正在做一个不同的setTimeout,我不再收到这个错误,但滚动仍然是瞬时的,而不是平滑的滚动.

我变了

setTimeout(this.win.scrollTo(0,timer * speed);

至

setTimeout(()=> this.win.scrollTo(0,定时器*速度);

import {Injectable,];

import { bootstrap } from 'angular2/platform/browser';
import { Component } from 'angular2/core';
import {WINDOW,WINDOW_PROVIDERS} from './window.service';

@Component({
  selector: 'my-app',templateUrl: 'app.tpl.html',providers: [WINDOW_PROVIDERS]
})

class AppComponent {
    win: Window;
    private offSet: number;
    constructor(
        private _win: WINDOW) { 
        this.win = _win.nativeWindow;
    }
    title = 'Ultra Racing';
    things = new Array(200);

    scrollTo(yPoint: number,duration: number) {
        setTimeout(() => {
            this.win.window.scrollTo(0,yPoint)
        },duration);
        return;
    }
    smoothScroll(eID) {
        var startY = currentYPosition();
        var stopY = elmYPosition(eID);
        var distance = stopY > startY ? stopY - startY : startY - stopY;
        if (distance < 100) {
            this.win.window.scrollTo(0,stopY); return;
        }
        var speed = Math.round(distance / 100);
        if (speed >= 20) speed = 20;
        var step = Math.round(distance / 100);
        var leapY = stopY > startY ? startY + step : startY - step;
        var timer = 0;
        if (stopY > startY) {
            for (var i = startY; i < stopY; i += step) {
                this.scrollTo(leapY,timer * speed);
                leapY += step; if (leapY > stopY) leapY = stopY; timer++;
            } return;
        }
        for (var i = startY; i > stopY; i -= step) {
            this.scrollTo(leapY,timer * speed);
            leapY -= step; if (leapY < stopY) leapY = stopY; timer++;
        }
    }
}
function currentYPosition() {
    // Firefox,7 and 8
    if (document.body.scrollTop) return document.body.scrollTop;
    return 0;
}
function elmYPosition(eID) {
    var elm = document.getElementById(eID);
    var y = elm.offsetTop;
    var node = elm;
    while (node.offsetParent && node.offsetParent != document.body) {
        node = node.offsetParent;
        y += node.offsetTop;
    } return y;
}

bootstrap(AppComponent)