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ng-zorro-antd

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An enterprise-class UI components based on Ant Design and Angular

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/** * @fileoverview added by tsickle * Generated from: back-top.component.ts * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc */ import { __decorate, __metadata } from "tslib"; /** * @license * Copyright Alibaba.com 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://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE */ import { Platform } from '@angular/cdk/platform'; import { DOCUMENT } from '@angular/common'; import { ChangeDetectionStrategy, ChangeDetectorRef, Component, EventEmitter, Inject, Input, NgZone, Output, TemplateRef, ViewEncapsulation } from '@angular/core'; import { fadeMotion } from 'ng-zorro-antd/core/animation'; import { NzConfigService, WithConfig } from 'ng-zorro-antd/core/config'; import { NzScrollService } from 'ng-zorro-antd/core/services'; import { InputNumber } from 'ng-zorro-antd/core/util'; import { fromEvent, Subject } from 'rxjs'; import { takeUntil, throttleTime } from 'rxjs/operators'; /** @type {?} */ var NZ_CONFIG_COMPONENT_NAME = 'backTop'; var NzBackTopComponent = /** @class */ (function () { function NzBackTopComponent(doc, nzConfigService, scrollSrv, platform, cd, zone) { this.doc = doc; this.nzConfigService = nzConfigService; this.scrollSrv = scrollSrv; this.platform = platform; this.cd = cd; this.zone = zone; this.scrollListenerDestroy$ = new Subject(); this.target = null; this.visible = false; this.nzClick = new EventEmitter(); } /** * @return {?} */ NzBackTopComponent.prototype.ngOnInit = /** * @return {?} */ function () { this.registerScrollEvent(); }; /** * @return {?} */ NzBackTopComponent.prototype.clickBackTop = /** * @return {?} */ function () { this.scrollSrv.scrollTo(this.getTarget(), 0); this.nzClick.emit(true); }; /** * @private * @return {?} */ NzBackTopComponent.prototype.getTarget = /** * @private * @return {?} */ function () { return this.target || window; }; /** * @private * @return {?} */ NzBackTopComponent.prototype.handleScroll = /** * @private * @return {?} */ function () { if (this.visible === this.scrollSrv.getScroll(this.getTarget()) > this.nzVisibilityHeight) { return; } this.visible = !this.visible; this.cd.detectChanges(); }; /** * @private * @return {?} */ NzBackTopComponent.prototype.registerScrollEvent = /** * @private * @return {?} */ function () { var _this = this; if (!this.platform.isBrowser) { return; } this.scrollListenerDestroy$.next(); this.handleScroll(); this.zone.runOutsideAngular((/** * @return {?} */ function () { fromEvent(_this.getTarget(), 'scroll') .pipe(throttleTime(50), takeUntil(_this.scrollListenerDestroy$)) .subscribe((/** * @return {?} */ function () { return _this.handleScroll(); })); })); }; /** * @return {?} */ NzBackTopComponent.prototype.ngOnDestroy = /** * @return {?} */ function () { this.scrollListenerDestroy$.next(); this.scrollListenerDestroy$.complete(); }; /** * @param {?} changes * @return {?} */ NzBackTopComponent.prototype.ngOnChanges = /** * @param {?} changes * @return {?} */ function (changes) { var nzTarget = changes.nzTarget; if (nzTarget) { this.target = typeof this.nzTarget === 'string' ? this.doc.querySelector(this.nzTarget) : this.nzTarget; this.registerScrollEvent(); } }; NzBackTopComponent.decorators = [ { type: Component, args: [{ selector: 'nz-back-top', exportAs: 'nzBackTop', animations: [fadeMotion], template: "\n <div class=\"ant-back-top\" (click)=\"clickBackTop()\" @fadeMotion *ngIf=\"visible\">\n <ng-template #defaultContent>\n <div class=\"ant-back-top-content\">\n <div class=\"ant-back-top-icon\"></div>\n </div>\n </ng-template>\n <ng-template [ngTemplateOutlet]=\"nzTemplate || defaultContent\"></ng-template>\n </div>\n ", changeDetection: ChangeDetectionStrategy.OnPush, encapsulation: ViewEncapsulation.None, preserveWhitespaces: false }] } ]; /** @nocollapse */ NzBackTopComponent.ctorParameters = function () { return [ { type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] }, { type: NzConfigService }, { type: NzScrollService }, { type: Platform }, { type: ChangeDetectorRef }, { type: NgZone } ]; }; NzBackTopComponent.propDecorators = { nzTemplate: [{ type: Input }], nzVisibilityHeight: [{ type: Input }], nzTarget: [{ type: Input }], nzClick: [{ type: Output }] }; __decorate([ WithConfig(NZ_CONFIG_COMPONENT_NAME, 400), InputNumber(), __metadata("design:type", Number) ], NzBackTopComponent.prototype, "nzVisibilityHeight", void 0); return NzBackTopComponent; }()); export { NzBackTopComponent }; if (false) { /** @type {?} */ NzBackTopComponent.ngAcceptInputType_nzVisibilityHeight; /** * @type {?} * @private */ NzBackTopComponent.prototype.scrollListenerDestroy$; /** * @type {?} * @private */ NzBackTopComponent.prototype.target; /** @type {?} */ NzBackTopComponent.prototype.visible; /** @type {?} */ NzBackTopComponent.prototype.nzTemplate; /** @type {?} */ NzBackTopComponent.prototype.nzVisibilityHeight; /** @type {?} */ NzBackTopComponent.prototype.nzTarget; /** @type {?} */ NzBackTopComponent.prototype.nzClick; /** * @type {?} * @private */ NzBackTopComponent.prototype.doc; /** @type {?} */ NzBackTopComponent.prototype.nzConfigService; /** * @type {?} * @private */ NzBackTopComponent.prototype.scrollSrv; /** * @type {?} * @private */ NzBackTopComponent.prototype.platform; /** * @type {?} * @private */ NzBackTopComponent.prototype.cd; /** * @type {?} * @private */ NzBackTopComponent.prototype.zone; } //# 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* @license\n * Copyright Alibaba.com 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://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE\n */\n\nimport { Platform } from '@angular/cdk/platform';\nimport { DOCUMENT } from '@angular/common';\nimport {\n  ChangeDetectionStrategy,\n  ChangeDetectorRef,\n  Component,\n  EventEmitter,\n  Inject,\n  Input,\n  NgZone,\n  OnChanges,\n  OnDestroy,\n  OnInit,\n  Output,\n  SimpleChanges,\n  TemplateRef,\n  ViewEncapsulation\n} from '@angular/core';\nimport { fadeMotion } from 'ng-zorro-antd/core/animation';\nimport { NzConfigService, WithConfig } from 'ng-zorro-antd/core/config';\nimport { NzScrollService } from 'ng-zorro-antd/core/services';\nimport { NumberInput, NzSafeAny } from 'ng-zorro-antd/core/types';\nimport { InputNumber } from 'ng-zorro-antd/core/util';\n\nimport { fromEvent, Subject } from 'rxjs';\nimport { takeUntil, throttleTime } from 'rxjs/operators';\n\nconst NZ_CONFIG_COMPONENT_NAME = 'backTop';\n\n@Component({\n  selector: 'nz-back-top',\n  exportAs: 'nzBackTop',\n  animations: [fadeMotion],\n  template: `\n    <div class=\"ant-back-top\" (click)=\"clickBackTop()\" @fadeMotion *ngIf=\"visible\">\n      <ng-template #defaultContent>\n        <div class=\"ant-back-top-content\">\n          <div class=\"ant-back-top-icon\"></div>\n        </div>\n      </ng-template>\n      <ng-template [ngTemplateOutlet]=\"nzTemplate || defaultContent\"></ng-template>\n    </div>\n  `,\n  changeDetection: ChangeDetectionStrategy.OnPush,\n  encapsulation: ViewEncapsulation.None,\n  preserveWhitespaces: false\n})\nexport class NzBackTopComponent implements OnInit, OnDestroy, OnChanges {\n  static ngAcceptInputType_nzVisibilityHeight: NumberInput;\n\n  private scrollListenerDestroy$ = new Subject();\n  private target: HTMLElement | null = null;\n\n  visible: boolean = false;\n\n  @Input() nzTemplate: TemplateRef<void>;\n  @Input() @WithConfig(NZ_CONFIG_COMPONENT_NAME, 400) @InputNumber() nzVisibilityHeight: number;\n  @Input() nzTarget: string | HTMLElement;\n  @Output() readonly nzClick: EventEmitter<boolean> = new EventEmitter();\n\n  constructor(\n    @Inject(DOCUMENT) private doc: NzSafeAny,\n    public nzConfigService: NzConfigService,\n    private scrollSrv: NzScrollService,\n    private platform: Platform,\n    private cd: ChangeDetectorRef,\n    private zone: NgZone\n  ) {}\n\n  ngOnInit(): void {\n    this.registerScrollEvent();\n  }\n\n  clickBackTop(): void {\n    this.scrollSrv.scrollTo(this.getTarget(), 0);\n    this.nzClick.emit(true);\n  }\n\n  private getTarget(): HTMLElement | Window {\n    return this.target || window;\n  }\n\n  private handleScroll(): void {\n    if (this.visible === this.scrollSrv.getScroll(this.getTarget()) > this.nzVisibilityHeight) {\n      return;\n    }\n    this.visible = !this.visible;\n    this.cd.detectChanges();\n  }\n\n  private registerScrollEvent(): void {\n    if (!this.platform.isBrowser) {\n      return;\n    }\n    this.scrollListenerDestroy$.next();\n    this.handleScroll();\n    this.zone.runOutsideAngular(() => {\n      fromEvent(this.getTarget(), 'scroll')\n        .pipe(throttleTime(50), takeUntil(this.scrollListenerDestroy$))\n        .subscribe(() => this.handleScroll());\n    });\n  }\n\n  ngOnDestroy(): void {\n    this.scrollListenerDestroy$.next();\n    this.scrollListenerDestroy$.complete();\n  }\n\n  ngOnChanges(changes: SimpleChanges): void {\n    const { nzTarget } = changes;\n    if (nzTarget) {\n      this.target = typeof this.nzTarget === 'string' ? this.doc.querySelector(this.nzTarget) : this.nzTarget;\n      this.registerScrollEvent();\n    }\n  }\n}\n"]}