<!DOCTYPE html>
<html>

<head>
  <base href="." />
  <title>Angular 8 template</title>
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
  <script src="https://code.jquery.com/jquery-3.2.1.min.js" integrity="sha256-hwg4gsxgFZhOsEEamdOYGBf13FyQuiTwlAQgxVSNgt4=" crossorigin="anonymous"></script>
  <script src="https://unpkg.com/gijgo@1.9.13/js/gijgo.min.js" type="text/javascript"></script>
  <link href="https://unpkg.com/gijgo@1.9.13/css/gijgo.min.css" rel="stylesheet" type="text/css" />
  <script src="https://unpkg.com/core-js@2.5.7/client/shim.min.js"></script>
  <script src="https://unpkg.com/zone.js@0.8.26?main=browser"></script>
  <script src="https://unpkg.com/reflect-metadata@0.1.8"></script>
  <script src="https://unpkg.com/systemjs@0.19.39/dist/system.src.js"></script>
  
  <script src="config.js"></script>
  <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
</head>

<body>
  <my-app>
    loading...
  </my-app>
</body>

</html>
//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';

platformBrowserDynamic().bootstrapModule(AppModule)
//our root app component
import {Component, NgModule} from '@angular/core'
import {BrowserModule} from '@angular/platform-browser'
import { AngularDoubleScrollbarsComponent } from './angular-double-scrollbars'


@Component({
  selector: 'my-app',
  template: `
    <h1>Angular Double Scrollbars </h1>
    <div style="padding: 10px">
      <lib-angular-double-scrollbars>
        loooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong text
      </lib-angular-double-scrollbars>
    </div>
  `,
})
export class App {  

  constructor() {
  }
}

@NgModule({
  imports: [ BrowserModule ],
  declarations: [ App, AngularDoubleScrollbarsComponent ],
  bootstrap: [ App ]
})
export class AppModule {}
import { Component, OnInit, Input, ElementRef, ViewChild, ChangeDetectorRef } from '@angular/core';

@Component({
  selector: 'lib-angular-double-scrollbars',
  template: `
      <div style="overflow-y:hidden" [ngStyle]="{height:nativeScrollBarHeight}">
        <div style="overflow-y:hidden;position:relative;top:-1px"
            [ngStyle]="{'overflow-x':doubleScrollBarHorizontal=='always'?'scroll':'auto',height:scrollBarElementHeight}"
            #wrapperDiv (scroll)='onWrapperScroll($event)'>
            <div [ngStyle]="{width:wrapper2scrollWidth,height:scrollBarElementHeight}"></div>
        </div>
      </div>
      <div [ngStyle]="{'overflow-x':doubleScrollBarHorizontal=='always'?'scroll':'auto'}" #mainDiv
        (scroll)='onMainScroll($event)'>
        <ng-content></ng-content>
      </div>`,
  styles: []
})
export class AngularDoubleScrollbarsComponent implements OnInit {

  constructor(private cd: ChangeDetectorRef) { }
  @Input('doubleScrollBarHorizontal') doubleScrollBarHorizontal: string;
  @ViewChild('mainDiv', {static: false}) mainDiv:ElementRef;
  @ViewChild('wrapperDiv', {static: false}) wrapperDiv:ElementRef;

  nativeScrollBarHeight: string;
  scrollBarElementHeight: string;
  wrapper2scrollWidth: string;
  

  ngOnInit() {
    let barSize = this.getWidth();

    this.nativeScrollBarHeight = barSize + 'px';
    this.scrollBarElementHeight = (barSize + 1) + 'px';       
  }

  ngAfterViewInit(){
    this.wrapper2scrollWidth = this.mainDiv.nativeElement.scrollWidth + 'px';
    this.cd.detectChanges();
  }

  public onWrapperScroll($event){
    this.mainDiv.nativeElement.scrollLeft = this.wrapperDiv.nativeElement.scrollLeft;
  }

  public onMainScroll($event){
    this.wrapperDiv.nativeElement.scrollLeft = this.mainDiv.nativeElement.scrollLeft;
  }

  private getWidth() {
    var inner = document.createElement('div');
    var outer = document.createElement('div');

    inner.style.width = '100%';
    inner.style.height = '200px';

    outer.style.width = '200px';
    outer.style.height = '150px';
    outer.style.position = 'absolute';
    outer.style.top = '0';
    outer.style.left = '0';
    outer.style.visibility = 'hidden';
    outer.style.overflow = 'hidden';
    outer.appendChild(inner);

    document.body.appendChild(outer);
    var width1 = inner.offsetWidth;
    outer.style.overflow = 'scroll';
    var width2 = outer.clientWidth;
    document.body.removeChild(outer);
    return (width1 - width2);
  }
}
var angularVersion = '@8.0.0';

System.config({
  transpiler: 'ts',
  typescriptOptions: {
    emitDecoratorMetadata: true,
    experimentalDecorators: true
  },
  meta: {
  'typescript': {
		"exports": "ts"
	  }
	},
  paths: {
    'npm:': 'https://unpkg.com/'
  },
  map: {
    app: "./src",
    '@angular/core': 'npm:@angular/core'+angularVersion+'/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common'+angularVersion+'/bundles/common.umd.js',
    '@angular/compiler': 'npm:@angular/compiler'+angularVersion+'/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser'+angularVersion+'/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic'+angularVersion+'/bundles/platform-browser-dynamic.umd.js',
    '@angular/http': 'npm:@angular/http'+angularVersion+'/bundles/http.umd.js',
    '@angular/router': 'npm:@angular/router'+angularVersion+'/bundles/router.umd.js',
    '@angular/forms': 'npm:@angular/forms'+angularVersion+'/bundles/forms.umd.js',
    '@angular/upgrade': 'npm:@angular/upgrade'+angularVersion+'/bundles/upgrade.umd.js',
    '@angular/upgrade/static': 'npm:@angular/upgrade'+angularVersion+'/bundles/upgrade-static.umd.js',

    // other libraries
    'rxjs':                      'npm:rxjs@6.2.1',
    'rxjs-compat':               'npm:rxjs-compat@6.2.1',
    'ts':                        'npm:plugin-typescript@8.0.0/lib/plugin.js',
    'typescript':                'npm:typescript@2.9.2/lib/typescript.js',
    'gijgo-angular-wrappers': 'npm:gijgo-angular-wrappers@1.9.8/index.ts',
    'gijgo': 'npm:gijgo',
    '@types/jquery': 'npm:@types/jquery',
    '@types/gijgo': 'npm:@types/gijgo'
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    },
    rxjs: {
        main: 'index.js',
        defaultExtension: 'js'
    },
    "rxjs/operators": {
        main: 'index.js',
        defaultExtension: 'js'
    }
  }
});