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ngx-scrollbar-v8

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Custom overlay-scrollbars with native scrolling mechanism.

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/** * @fileoverview added by tsickle * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc */ import { Input, ViewChild, ElementRef } from '@angular/core'; import { isPlatformBrowser } from '@angular/common'; import { BehaviorSubject, Subscription } from 'rxjs'; import { debounceTime, throttleTime, tap } from 'rxjs/operators'; export class NgScrollbarThumb { /** * @param {?} _parent * @param {?} _platform * @param {?} _zone */ constructor(_parent, _platform, _zone) { this._parent = _parent; this._platform = _platform; this._zone = _zone; this._minThumbSize = 20; this._naturalThumbSize = 0; this._thumbSize = 0; this._trackMax = 0; this._scrollMax = 0; this._currPos = 0; this._scroll$ = Subscription.EMPTY; this._thumbDrag$ = Subscription.EMPTY; this._updateObserver$ = Subscription.EMPTY; this._state = new BehaviorSubject({ transform: 'translate3d(0, 0, 0)' }); /** * Scrollbar styles */ this.scrollbarStyle = this._state.asObservable(); } /** * @return {?} */ get thumbSize() { return 0; } /** * @return {?} */ ngAfterViewInit() { // Avoid SSR Error if (isPlatformBrowser(this._platform)) { this._view = this._parent.view; // Start view scroll event this._scroll$ = this._parent.scrollable.elementScrolled() .subscribe((/** * @return {?} */ () => this.updateScrollbar())); // Start scrollbar thumbnail drag events this._zone.runOutsideAngular((/** * @return {?} */ () => this._thumbDrag$ = this.startThumbEvents().subscribe())); // Update scrollbar thumbnail size on content changes this._updateObserver$ = this._parent.updateObserver.pipe(throttleTime(200), tap((/** * @return {?} */ () => this.updateScrollbar())), // Make sure scrollbar thumbnail position is correct after the new content is rendered debounceTime(200), tap((/** * @return {?} */ () => this.updateScrollbar()))).subscribe(); // Initialize scrollbar setTimeout((/** * @return {?} */ () => this.updateScrollbar()), 200); } } /** * @return {?} */ ngOnDestroy() { this._scroll$.unsubscribe(); this._thumbDrag$.unsubscribe(); this._updateObserver$.unsubscribe(); } /** * Scrollbar click * @param {?} e Mouse event * @return {?} */ onScrollbarHolderClick(e) { } /** * Update scrollbar * @protected * @return {?} */ updateScrollbar() { } /** * Start vertical thumb worker * @protected * @return {?} */ startThumbEvents() { return undefined; } /** * Get scrollbar thumb size * @protected * @param {?} naturalThumbSize * @param {?} scrollMax * @return {?} */ scrollBoundaries(naturalThumbSize, scrollMax) { return (naturalThumbSize < this._minThumbSize) ? this._minThumbSize : scrollMax ? naturalThumbSize : 0; } /** * @protected * @param {?} state * @return {?} */ updateState(state) { this._state.next(Object.assign({}, this._state.value, state)); } } NgScrollbarThumb.propDecorators = { barClass: [{ type: Input }], thumbClass: [{ type: Input }], scrollToDuration: [{ type: Input }], bar: [{ type: ViewChild, args: ['bar', { static: true },] }], thumb: [{ type: ViewChild, args: ['thumb', { static: true },] }] }; if (false) { /** * Scrollbar class * @type {?} */ NgScrollbarThumb.prototype.barClass; /** * Scrollbar thumbnail class * @type {?} */ NgScrollbarThumb.prototype.thumbClass; /** * The scroll duration when scrollbar (not the thumbnail) is clicked * @type {?} */ NgScrollbarThumb.prototype.scrollToDuration; /** @type {?} */ NgScrollbarThumb.prototype.bar; /** @type {?} */ NgScrollbarThumb.prototype.thumb; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._minThumbSize; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._naturalThumbSize; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._thumbSize; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._trackMax; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._scrollMax; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._currPos; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._scroll$; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._thumbDrag$; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._updateObserver$; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._view; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._state; /** * Scrollbar styles * @type {?} */ NgScrollbarThumb.prototype.scrollbarStyle; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._parent; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._platform; /** * @type {?} * @protected */ NgScrollbarThumb.prototype._zone; } //# 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{ AfterViewInit, OnDestroy, Input, ViewChild, NgZone, ElementRef } from '@angular/core';\nimport { isPlatformBrowser } from '@angular/common';\nimport { Observable, BehaviorSubject, Subscription } from 'rxjs';\nimport { debounceTime, throttleTime, tap } from 'rxjs/operators';\nimport { NgScrollbar } from './ng-scrollbar';\n\nexport class NgScrollbarThumb implements AfterViewInit, OnDestroy {\n\n  /** Scrollbar class */\n  @Input() barClass: string;\n  /** Scrollbar thumbnail class */\n  @Input() thumbClass: string;\n  /** The scroll duration when scrollbar (not the thumbnail) is clicked */\n  @Input() scrollToDuration: number;\n\n  @ViewChild('bar', { static: true }) bar: ElementRef;\n  @ViewChild('thumb', { static: true }) thumb: ElementRef;\n\n  protected _minThumbSize = 20;\n  protected _naturalThumbSize = 0;\n  protected _thumbSize = 0;\n  protected _trackMax = 0;\n  protected _scrollMax = 0;\n  protected _currPos = 0;\n  protected _scroll$ = Subscription.EMPTY;\n  protected _thumbDrag$ = Subscription.EMPTY;\n  protected _updateObserver$ = Subscription.EMPTY;\n  protected _view: HTMLElement;\n  protected _state = new BehaviorSubject<any>({\n    transform: 'translate3d(0, 0, 0)'\n  });\n\n  /** Scrollbar styles */\n  readonly scrollbarStyle = this._state.asObservable();\n\n  get thumbSize(): number {\n    return 0;\n  }\n\n  constructor(protected _parent: NgScrollbar,\n              protected _platform: Object,\n              protected _zone: NgZone) {\n  }\n\n  ngAfterViewInit() {\n    // Avoid SSR Error\n    if (isPlatformBrowser(this._platform)) {\n      this._view = this._parent.view;\n      // Start view scroll event\n      this._scroll$ = this._parent.scrollable.elementScrolled()\n        .subscribe(() => this.updateScrollbar());\n\n      // Start scrollbar thumbnail drag events\n      this._zone.runOutsideAngular(() =>\n        this._thumbDrag$ = this.startThumbEvents().subscribe()\n      );\n\n      // Update scrollbar thumbnail size on content changes\n      this._updateObserver$ = this._parent.updateObserver.pipe(\n        throttleTime(200),\n        tap(() => this.updateScrollbar()),\n        // Make sure scrollbar thumbnail position is correct after the new content is rendered\n        debounceTime(200),\n        tap(() => this.updateScrollbar()),\n      ).subscribe();\n\n      // Initialize scrollbar\n      setTimeout(() => this.updateScrollbar(), 200);\n    }\n  }\n\n  ngOnDestroy() {\n    this._scroll$.unsubscribe();\n    this._thumbDrag$.unsubscribe();\n    this._updateObserver$.unsubscribe();\n  }\n\n  /**\n   * Scrollbar click\n   * @param e Mouse event\n   */\n  onScrollbarHolderClick(e: any) {\n  }\n\n  /**\n   * Update scrollbar\n   */\n  protected updateScrollbar() {\n  }\n\n  /**\n   * Start vertical thumb worker\n   */\n  protected startThumbEvents(): Observable<any> | undefined {\n    return undefined;\n  }\n\n  /**\n   * Get scrollbar thumb size\n   * @param naturalThumbSize\n   * @param scrollMax\n   */\n  protected scrollBoundaries(naturalThumbSize: number, scrollMax: number): number {\n    return (naturalThumbSize < this._minThumbSize) ? this._minThumbSize : scrollMax ? naturalThumbSize : 0;\n  }\n\n  protected updateState(state: any) {\n    this._state.next({...this._state.value, ...state});\n  }\n}\n"]}