/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { Directionality } from '@angular/cdk/bidi';
import { getRtlScrollAxisType, supportsScrollBehavior, } from '@angular/cdk/platform';
import { Directive, ElementRef, NgZone, Optional } from '@angular/core';
import { fromEvent, Observable, Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';
import { ScrollDispatcher } from './scroll-dispatcher';
import * as i0 from "@angular/core";
import * as i1 from "./scroll-dispatcher";
import * as i2 from "@angular/cdk/bidi";
/**
 * Sends an event when the directive's element is scrolled. Registers itself with the
 * ScrollDispatcher service to include itself as part of its collection of scrolling events that it
 * can be listened to through the service.
 */
export class CdkScrollable {
    constructor(elementRef, scrollDispatcher, ngZone, dir) {
        this.elementRef = elementRef;
        this.scrollDispatcher = scrollDispatcher;
        this.ngZone = ngZone;
        this.dir = dir;
        this._destroyed = new Subject();
        this._elementScrolled = new Observable((observer) => this.ngZone.runOutsideAngular(() => fromEvent(this.elementRef.nativeElement, 'scroll')
            .pipe(takeUntil(this._destroyed))
            .subscribe(observer)));
    }
    ngOnInit() {
        this.scrollDispatcher.register(this);
    }
    ngOnDestroy() {
        this.scrollDispatcher.deregister(this);
        this._destroyed.next();
        this._destroyed.complete();
    }
    /** Returns observable that emits when a scroll event is fired on the host element. */
    elementScrolled() {
        return this._elementScrolled;
    }
    /** Gets the ElementRef for the viewport. */
    getElementRef() {
        return this.elementRef;
    }
    /**
     * Scrolls to the specified offsets. This is a normalized version of the browser's native scrollTo
     * method, since browsers are not consistent about what scrollLeft means in RTL. For this method
     * left and right always refer to the left and right side of the scrolling container irrespective
     * of the layout direction. start and end refer to left and right in an LTR context and vice-versa
     * in an RTL context.
     * @param options specified the offsets to scroll to.
     */
    scrollTo(options) {
        const el = this.elementRef.nativeElement;
        const isRtl = this.dir && this.dir.value == 'rtl';
        // Rewrite start & end offsets as right or left offsets.
        if (options.left == null) {
            options.left = isRtl ? options.end : options.start;
        }
        if (options.right == null) {
            options.right = isRtl ? options.start : options.end;
        }
        // Rewrite the bottom offset as a top offset.
        if (options.bottom != null) {
            options.top =
                el.scrollHeight - el.clientHeight - options.bottom;
        }
        // Rewrite the right offset as a left offset.
        if (isRtl && getRtlScrollAxisType() != 0 /* RtlScrollAxisType.NORMAL */) {
            if (options.left != null) {
                options.right =
                    el.scrollWidth - el.clientWidth - options.left;
            }
            if (getRtlScrollAxisType() == 2 /* RtlScrollAxisType.INVERTED */) {
                options.left = options.right;
            }
            else if (getRtlScrollAxisType() == 1 /* RtlScrollAxisType.NEGATED */) {
                options.left = options.right ? -options.right : options.right;
            }
        }
        else {
            if (options.right != null) {
                options.left =
                    el.scrollWidth - el.clientWidth - options.right;
            }
        }
        this._applyScrollToOptions(options);
    }
    _applyScrollToOptions(options) {
        const el = this.elementRef.nativeElement;
        if (supportsScrollBehavior()) {
            el.scrollTo(options);
        }
        else {
            if (options.top != null) {
                el.scrollTop = options.top;
            }
            if (options.left != null) {
                el.scrollLeft = options.left;
            }
        }
    }
    /**
     * Measures the scroll offset relative to the specified edge of the viewport. This method can be
     * used instead of directly checking scrollLeft or scrollTop, since browsers are not consistent
     * about what scrollLeft means in RTL. The values returned by this method are normalized such that
     * left and right always refer to the left and right side of the scrolling container irrespective
     * of the layout direction. start and end refer to left and right in an LTR context and vice-versa
     * in an RTL context.
     * @param from The edge to measure from.
     */
    measureScrollOffset(from) {
        const LEFT = 'left';
        const RIGHT = 'right';
        const el = this.elementRef.nativeElement;
        if (from == 'top') {
            return el.scrollTop;
        }
        if (from == 'bottom') {
            return el.scrollHeight - el.clientHeight - el.scrollTop;
        }
        // Rewrite start & end as left or right offsets.
        const isRtl = this.dir && this.dir.value == 'rtl';
        if (from == 'start') {
            from = isRtl ? RIGHT : LEFT;
        }
        else if (from == 'end') {
            from = isRtl ? LEFT : RIGHT;
        }
        if (isRtl && getRtlScrollAxisType() == 2 /* RtlScrollAxisType.INVERTED */) {
            // For INVERTED, scrollLeft is (scrollWidth - clientWidth) when scrolled all the way left and
            // 0 when scrolled all the way right.
            if (from == LEFT) {
                return el.scrollWidth - el.clientWidth - el.scrollLeft;
            }
            else {
                return el.scrollLeft;
            }
        }
        else if (isRtl && getRtlScrollAxisType() == 1 /* RtlScrollAxisType.NEGATED */) {
            // For NEGATED, scrollLeft is -(scrollWidth - clientWidth) when scrolled all the way left and
            // 0 when scrolled all the way right.
            if (from == LEFT) {
                return el.scrollLeft + el.scrollWidth - el.clientWidth;
            }
            else {
                return -el.scrollLeft;
            }
        }
        else {
            // For NORMAL, as well as non-RTL contexts, scrollLeft is 0 when scrolled all the way left and
            // (scrollWidth - clientWidth) when scrolled all the way right.
            if (from == LEFT) {
                return el.scrollLeft;
            }
            else {
                return el.scrollWidth - el.clientWidth - el.scrollLeft;
            }
        }
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkScrollable, deps: [{ token: i0.ElementRef }, { token: i1.ScrollDispatcher }, { token: i0.NgZone }, { token: i2.Directionality, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkScrollable, isStandalone: true, selector: "[cdk-scrollable], [cdkScrollable]", ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkScrollable, decorators: [{
            type: Directive,
            args: [{
                    selector: '[cdk-scrollable], [cdkScrollable]',
                    standalone: true,
                }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i1.ScrollDispatcher }, { type: i0.NgZone }, { type: i2.Directionality, decorators: [{
                    type: Optional
                }] }]; } });
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"scrollable.js","sourceRoot":"","sources":["../../../../../../src/cdk/scrolling/scrollable.ts"],"names":[],"mappings":"AAAA;;;;;;GAMG;AAEH,OAAO,EAAC,cAAc,EAAC,MAAM,mBAAmB,CAAC;AACjD,OAAO,EACL,oBAAoB,EAEpB,sBAAsB,GACvB,MAAM,uBAAuB,CAAC;AAC/B,OAAO,EAAC,SAAS,EAAE,UAAU,EAAE,MAAM,EAAqB,QAAQ,EAAC,MAAM,eAAe,CAAC;AACzF,OAAO,EAAC,SAAS,EAAE,UAAU,EAAE,OAAO,EAAW,MAAM,MAAM,CAAC;AAC9D,OAAO,EAAC,SAAS,EAAC,MAAM,gBAAgB,CAAC;AACzC,OAAO,EAAC,gBAAgB,EAAC,MAAM,qBAAqB,CAAC;;;;AAqBrD;;;;GAIG;AAKH,MAAM,OAAO,aAAa;IAWxB,YACY,UAAmC,EACnC,gBAAkC,EAClC,MAAc,EACF,GAAoB;QAHhC,eAAU,GAAV,UAAU,CAAyB;QACnC,qBAAgB,GAAhB,gBAAgB,CAAkB;QAClC,WAAM,GAAN,MAAM,CAAQ;QACF,QAAG,GAAH,GAAG,CAAiB;QAdzB,eAAU,GAAG,IAAI,OAAO,EAAQ,CAAC;QAE1C,qBAAgB,GAAsB,IAAI,UAAU,CAAC,CAAC,QAAyB,EAAE,EAAE,CAC3F,IAAI,CAAC,MAAM,CAAC,iBAAiB,CAAC,GAAG,EAAE,CACjC,SAAS,CAAC,IAAI,CAAC,UAAU,CAAC,aAAa,EAAE,QAAQ,CAAC;aAC/C,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;aAChC,SAAS,CAAC,QAAQ,CAAC,CACvB,CACF,CAAC;IAOC,CAAC;IAEJ,QAAQ;QACN,IAAI,CAAC,gBAAgB,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC;IACvC,CAAC;IAED,WAAW;QACT,IAAI,CAAC,gBAAgB,CAAC,UAAU,CAAC,IAAI,CAAC,CAAC;QACvC,IAAI,CAAC,UAAU,CAAC,IAAI,EAAE,CAAC;QACvB,IAAI,CAAC,UAAU,CAAC,QAAQ,EAAE,CAAC;IAC7B,CAAC;IAED,sFAAsF;IACtF,eAAe;QACb,OAAO,IAAI,CAAC,gBAAgB,CAAC;IAC/B,CAAC;IAED,4CAA4C;IAC5C,aAAa;QACX,OAAO,IAAI,CAAC,UAAU,CAAC;IACzB,CAAC;IAED;;;;;;;OAOG;IACH,QAAQ,CAAC,OAAgC;QACvC,MAAM,EAAE,GAAG,IAAI,CAAC,UAAU,CAAC,aAAa,CAAC;QACzC,MAAM,KAAK,GAAG,IAAI,CAAC,GAAG,IAAI,IAAI,CAAC,GAAG,CAAC,KAAK,IAAI,KAAK,CAAC;QAElD,wDAAwD;QACxD,IAAI,OAAO,CAAC,IAAI,IAAI,IAAI,EAAE;YACxB,OAAO,CAAC,IAAI,GAAG,KAAK,CAAC,CAAC,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,OAAO,CAAC,KAAK,CAAC;SACpD;QAED,IAAI,OAAO,CAAC,KAAK,IAAI,IAAI,EAAE;YACzB,OAAO,CAAC,KAAK,GAAG,KAAK,CAAC,CAAC,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,OAAO,CAAC,GAAG,CAAC;SACrD;QAED,6CAA6C;QAC7C,IAAI,OAAO,CAAC,MAAM,IAAI,IAAI,EAAE;YACzB,OAAoC,CAAC,GAAG;gBACvC,EAAE,CAAC,YAAY,GAAG,EAAE,CAAC,YAAY,GAAG,OAAO,CAAC,MAAM,CAAC;SACtD;QAED,6CAA6C;QAC7C,IAAI,KAAK,IAAI,oBAAoB,EAAE,oCAA4B,EAAE;YAC/D,IAAI,OAAO,CAAC,IAAI,IAAI,IAAI,EAAE;gBACvB,OAAoC,CAAC,KAAK;oBACzC,EAAE,CAAC,WAAW,GAAG,EAAE,CAAC,WAAW,GAAG,OAAO,CAAC,IAAI,CAAC;aAClD;YAED,IAAI,oBAAoB,EAAE,sCAA8B,EAAE;gBACxD,OAAO,CAAC,IAAI,GAAG,OAAO,CAAC,KAAK,CAAC;aAC9B;iBAAM,IAAI,oBAAoB,EAAE,qCAA6B,EAAE;gBAC9D,OAAO,CAAC,IAAI,GAAG,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,OAAO,CAAC,KAAK,CAAC;aAC/D;SACF;aAAM;YACL,IAAI,OAAO,CAAC,KAAK,IAAI,IAAI,EAAE;gBACxB,OAAoC,CAAC,IAAI;oBACxC,EAAE,CAAC,WAAW,GAAG,EAAE,CAAC,WAAW,GAAG,OAAO,CAAC,KAAK,CAAC;aACnD;SACF;QAED,IAAI,CAAC,qBAAqB,CAAC,OAAO,CAAC,CAAC;IACtC,CAAC;IAEO,qBAAqB,CAAC,OAAwB;QACpD,MAAM,EAAE,GAAG,IAAI,CAAC,UAAU,CAAC,aAAa,CAAC;QAEzC,IAAI,sBAAsB,EAAE,EAAE;YAC5B,EAAE,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC;SACtB;aAAM;YACL,IAAI,OAAO,CAAC,GAAG,IAAI,IAAI,EAAE;gBACvB,EAAE,CAAC,SAAS,GAAG,OAAO,CAAC,GAAG,CAAC;aAC5B;YACD,IAAI,OAAO,CAAC,IAAI,IAAI,IAAI,EAAE;gBACxB,EAAE,CAAC,UAAU,GAAG,OAAO,CAAC,IAAI,CAAC;aAC9B;SACF;IACH,CAAC;IAED;;;;;;;;OAQG;IACH,mBAAmB,CAAC,IAA2D;QAC7E,MAAM,IAAI,GAAG,MAAM,CAAC;QACpB,MAAM,KAAK,GAAG,OAAO,CAAC;QACtB,MAAM,EAAE,GAAG,IAAI,CAAC,UAAU,CAAC,aAAa,CAAC;QACzC,IAAI,IAAI,IAAI,KAAK,EAAE;YACjB,OAAO,EAAE,CAAC,SAAS,CAAC;SACrB;QACD,IAAI,IAAI,IAAI,QAAQ,EAAE;YACpB,OAAO,EAAE,CAAC,YAAY,GAAG,EAAE,CAAC,YAAY,GAAG,EAAE,CAAC,SAAS,CAAC;SACzD;QAED,gDAAgD;QAChD,MAAM,KAAK,GAAG,IAAI,CAAC,GAAG,IAAI,IAAI,CAAC,GAAG,CAAC,KAAK,IAAI,KAAK,CAAC;QAClD,IAAI,IAAI,IAAI,OAAO,EAAE;YACnB,IAAI,GAAG,KAAK,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,IAAI,CAAC;SAC7B;aAAM,IAAI,IAAI,IAAI,KAAK,EAAE;YACxB,IAAI,GAAG,KAAK,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC;SAC7B;QAED,IAAI,KAAK,IAAI,oBAAoB,EAAE,sCAA8B,EAAE;YACjE,6FAA6F;YAC7F,qCAAqC;YACrC,IAAI,IAAI,IAAI,IAAI,EAAE;gBAChB,OAAO,EAAE,CAAC,WAAW,GAAG,EAAE,CAAC,WAAW,GAAG,EAAE,CAAC,UAAU,CAAC;aACxD;iBAAM;gBACL,OAAO,EAAE,CAAC,UAAU,CAAC;aACtB;SACF;aAAM,IAAI,KAAK,IAAI,oBAAoB,EAAE,qCAA6B,EAAE;YACvE,6FAA6F;YAC7F,qCAAqC;YACrC,IAAI,IAAI,IAAI,IAAI,EAAE;gBAChB,OAAO,EAAE,CAAC,UAAU,GAAG,EAAE,CAAC,WAAW,GAAG,EAAE,CAAC,WAAW,CAAC;aACxD;iBAAM;gBACL,OAAO,CAAC,EAAE,CAAC,UAAU,CAAC;aACvB;SACF;aAAM;YACL,8FAA8F;YAC9F,+DAA+D;YAC/D,IAAI,IAAI,IAAI,IAAI,EAAE;gBAChB,OAAO,EAAE,CAAC,UAAU,CAAC;aACtB;iBAAM;gBACL,OAAO,EAAE,CAAC,WAAW,GAAG,EAAE,CAAC,WAAW,GAAG,EAAE,CAAC,UAAU,CAAC;aACxD;SACF;IACH,CAAC;8GA3JU,aAAa;kGAAb,aAAa;;2FAAb,aAAa;kBAJzB,SAAS;mBAAC;oBACT,QAAQ,EAAE,mCAAmC;oBAC7C,UAAU,EAAE,IAAI;iBACjB;;0BAgBI,QAAQ","sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Directionality} from '@angular/cdk/bidi';\nimport {\n  getRtlScrollAxisType,\n  RtlScrollAxisType,\n  supportsScrollBehavior,\n} from '@angular/cdk/platform';\nimport {Directive, ElementRef, NgZone, OnDestroy, OnInit, Optional} from '@angular/core';\nimport {fromEvent, Observable, Subject, Observer} from 'rxjs';\nimport {takeUntil} from 'rxjs/operators';\nimport {ScrollDispatcher} from './scroll-dispatcher';\n\nexport type _Without<T> = {[P in keyof T]?: never};\nexport type _XOR<T, U> = (_Without<T> & U) | (_Without<U> & T);\nexport type _Top = {top?: number};\nexport type _Bottom = {bottom?: number};\nexport type _Left = {left?: number};\nexport type _Right = {right?: number};\nexport type _Start = {start?: number};\nexport type _End = {end?: number};\nexport type _XAxis = _XOR<_XOR<_Left, _Right>, _XOR<_Start, _End>>;\nexport type _YAxis = _XOR<_Top, _Bottom>;\n\n/**\n * An extended version of ScrollToOptions that allows expressing scroll offsets relative to the\n * top, bottom, left, right, start, or end of the viewport rather than just the top and left.\n * Please note: the top and bottom properties are mutually exclusive, as are the left, right,\n * start, and end properties.\n */\nexport type ExtendedScrollToOptions = _XAxis & _YAxis & ScrollOptions;\n\n/**\n * Sends an event when the directive's element is scrolled. Registers itself with the\n * ScrollDispatcher service to include itself as part of its collection of scrolling events that it\n * can be listened to through the service.\n */\n@Directive({\n  selector: '[cdk-scrollable], [cdkScrollable]',\n  standalone: true,\n})\nexport class CdkScrollable implements OnInit, OnDestroy {\n  protected readonly _destroyed = new Subject<void>();\n\n  protected _elementScrolled: Observable<Event> = new Observable((observer: Observer<Event>) =>\n    this.ngZone.runOutsideAngular(() =>\n      fromEvent(this.elementRef.nativeElement, 'scroll')\n        .pipe(takeUntil(this._destroyed))\n        .subscribe(observer),\n    ),\n  );\n\n  constructor(\n    protected elementRef: ElementRef<HTMLElement>,\n    protected scrollDispatcher: ScrollDispatcher,\n    protected ngZone: NgZone,\n    @Optional() protected dir?: Directionality,\n  ) {}\n\n  ngOnInit() {\n    this.scrollDispatcher.register(this);\n  }\n\n  ngOnDestroy() {\n    this.scrollDispatcher.deregister(this);\n    this._destroyed.next();\n    this._destroyed.complete();\n  }\n\n  /** Returns observable that emits when a scroll event is fired on the host element. */\n  elementScrolled(): Observable<Event> {\n    return this._elementScrolled;\n  }\n\n  /** Gets the ElementRef for the viewport. */\n  getElementRef(): ElementRef<HTMLElement> {\n    return this.elementRef;\n  }\n\n  /**\n   * Scrolls to the specified offsets. This is a normalized version of the browser's native scrollTo\n   * method, since browsers are not consistent about what scrollLeft means in RTL. For this method\n   * left and right always refer to the left and right side of the scrolling container irrespective\n   * of the layout direction. start and end refer to left and right in an LTR context and vice-versa\n   * in an RTL context.\n   * @param options specified the offsets to scroll to.\n   */\n  scrollTo(options: ExtendedScrollToOptions): void {\n    const el = this.elementRef.nativeElement;\n    const isRtl = this.dir && this.dir.value == 'rtl';\n\n    // Rewrite start & end offsets as right or left offsets.\n    if (options.left == null) {\n      options.left = isRtl ? options.end : options.start;\n    }\n\n    if (options.right == null) {\n      options.right = isRtl ? options.start : options.end;\n    }\n\n    // Rewrite the bottom offset as a top offset.\n    if (options.bottom != null) {\n      (options as _Without<_Bottom> & _Top).top =\n        el.scrollHeight - el.clientHeight - options.bottom;\n    }\n\n    // Rewrite the right offset as a left offset.\n    if (isRtl && getRtlScrollAxisType() != RtlScrollAxisType.NORMAL) {\n      if (options.left != null) {\n        (options as _Without<_Left> & _Right).right =\n          el.scrollWidth - el.clientWidth - options.left;\n      }\n\n      if (getRtlScrollAxisType() == RtlScrollAxisType.INVERTED) {\n        options.left = options.right;\n      } else if (getRtlScrollAxisType() == RtlScrollAxisType.NEGATED) {\n        options.left = options.right ? -options.right : options.right;\n      }\n    } else {\n      if (options.right != null) {\n        (options as _Without<_Right> & _Left).left =\n          el.scrollWidth - el.clientWidth - options.right;\n      }\n    }\n\n    this._applyScrollToOptions(options);\n  }\n\n  private _applyScrollToOptions(options: ScrollToOptions): void {\n    const el = this.elementRef.nativeElement;\n\n    if (supportsScrollBehavior()) {\n      el.scrollTo(options);\n    } else {\n      if (options.top != null) {\n        el.scrollTop = options.top;\n      }\n      if (options.left != null) {\n        el.scrollLeft = options.left;\n      }\n    }\n  }\n\n  /**\n   * Measures the scroll offset relative to the specified edge of the viewport. This method can be\n   * used instead of directly checking scrollLeft or scrollTop, since browsers are not consistent\n   * about what scrollLeft means in RTL. The values returned by this method are normalized such that\n   * left and right always refer to the left and right side of the scrolling container irrespective\n   * of the layout direction. start and end refer to left and right in an LTR context and vice-versa\n   * in an RTL context.\n   * @param from The edge to measure from.\n   */\n  measureScrollOffset(from: 'top' | 'left' | 'right' | 'bottom' | 'start' | 'end'): number {\n    const LEFT = 'left';\n    const RIGHT = 'right';\n    const el = this.elementRef.nativeElement;\n    if (from == 'top') {\n      return el.scrollTop;\n    }\n    if (from == 'bottom') {\n      return el.scrollHeight - el.clientHeight - el.scrollTop;\n    }\n\n    // Rewrite start & end as left or right offsets.\n    const isRtl = this.dir && this.dir.value == 'rtl';\n    if (from == 'start') {\n      from = isRtl ? RIGHT : LEFT;\n    } else if (from == 'end') {\n      from = isRtl ? LEFT : RIGHT;\n    }\n\n    if (isRtl && getRtlScrollAxisType() == RtlScrollAxisType.INVERTED) {\n      // For INVERTED, scrollLeft is (scrollWidth - clientWidth) when scrolled all the way left and\n      // 0 when scrolled all the way right.\n      if (from == LEFT) {\n        return el.scrollWidth - el.clientWidth - el.scrollLeft;\n      } else {\n        return el.scrollLeft;\n      }\n    } else if (isRtl && getRtlScrollAxisType() == RtlScrollAxisType.NEGATED) {\n      // For NEGATED, scrollLeft is -(scrollWidth - clientWidth) when scrolled all the way left and\n      // 0 when scrolled all the way right.\n      if (from == LEFT) {\n        return el.scrollLeft + el.scrollWidth - el.clientWidth;\n      } else {\n        return -el.scrollLeft;\n      }\n    } else {\n      // For NORMAL, as well as non-RTL contexts, scrollLeft is 0 when scrolled all the way left and\n      // (scrollWidth - clientWidth) when scrolled all the way right.\n      if (from == LEFT) {\n        return el.scrollLeft;\n      } else {\n        return el.scrollWidth - el.clientWidth - el.scrollLeft;\n      }\n    }\n  }\n}\n"]}