ng-zorro-antd-yj
Version:
An enterprise-class UI components based on Ant Design and Angular
173 lines • 11.9 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { DOCUMENT } from '@angular/common';
import { ChangeDetectionStrategy, ChangeDetectorRef, Component, EventEmitter, Inject, Input, Output, TemplateRef, ViewEncapsulation } from '@angular/core';
import { fromEvent } from 'rxjs';
import { distinctUntilChanged, throttleTime } from 'rxjs/operators';
import { fadeMotion } from '../core/animation/fade';
import { NzScrollService } from '../core/scroll/nz-scroll.service';
import { toNumber } from '../core/util/convert';
export class NzBackTopComponent {
// tslint:disable-next-line:no-any
/**
* @param {?} scrollSrv
* @param {?} doc
* @param {?} cd
*/
constructor(scrollSrv, doc, cd) {
this.scrollSrv = scrollSrv;
this.doc = doc;
this.cd = cd;
this.scroll$ = null;
this.target = null;
this.visible = false;
this._visibilityHeight = 400;
this.nzClick = new EventEmitter();
}
/**
* @param {?} value
* @return {?}
*/
set nzVisibilityHeight(value) {
this._visibilityHeight = toNumber(value, 400);
}
/**
* @return {?}
*/
get nzVisibilityHeight() {
return this._visibilityHeight;
}
/**
* @param {?} el
* @return {?}
*/
set nzTarget(el) {
this.target = typeof el === 'string' ? this.doc.querySelector(el) : el;
this.registerScrollEvent();
}
/**
* @return {?}
*/
ngOnInit() {
if (!this.scroll$) {
this.registerScrollEvent();
}
}
/**
* @return {?}
*/
clickBackTop() {
this.scrollSrv.scrollTo(this.getTarget(), 0);
this.nzClick.emit(true);
}
/**
* @private
* @return {?}
*/
getTarget() {
return this.target || window;
}
/**
* @private
* @return {?}
*/
handleScroll() {
if (this.visible === this.scrollSrv.getScroll(this.getTarget()) > this.nzVisibilityHeight) {
return;
}
this.visible = !this.visible;
this.cd.markForCheck();
}
/**
* @private
* @return {?}
*/
removeListen() {
if (this.scroll$) {
this.scroll$.unsubscribe();
}
}
/**
* @private
* @return {?}
*/
registerScrollEvent() {
this.removeListen();
this.handleScroll();
this.scroll$ = fromEvent(this.getTarget(), 'scroll')
.pipe(throttleTime(50), distinctUntilChanged())
.subscribe((/**
* @return {?}
*/
() => this.handleScroll()));
}
/**
* @return {?}
*/
ngOnDestroy() {
this.removeListen();
}
}
NzBackTopComponent.decorators = [
{ type: Component, args: [{
selector: 'nz-back-top',
animations: [fadeMotion],
template: "<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>",
changeDetection: ChangeDetectionStrategy.OnPush,
encapsulation: ViewEncapsulation.None,
preserveWhitespaces: false
}] }
];
/** @nocollapse */
NzBackTopComponent.ctorParameters = () => [
{ type: NzScrollService },
{ type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
{ type: ChangeDetectorRef }
];
NzBackTopComponent.propDecorators = {
nzTemplate: [{ type: Input }],
nzVisibilityHeight: [{ type: Input }],
nzTarget: [{ type: Input }],
nzClick: [{ type: Output }]
};
if (false) {
/**
* @type {?}
* @private
*/
NzBackTopComponent.prototype.scroll$;
/**
* @type {?}
* @private
*/
NzBackTopComponent.prototype.target;
/** @type {?} */
NzBackTopComponent.prototype.visible;
/** @type {?} */
NzBackTopComponent.prototype.nzTemplate;
/**
* @type {?}
* @private
*/
NzBackTopComponent.prototype._visibilityHeight;
/** @type {?} */
NzBackTopComponent.prototype.nzClick;
/**
* @type {?}
* @private
*/
NzBackTopComponent.prototype.scrollSrv;
/**
* @type {?}
* @private
*/
NzBackTopComponent.prototype.doc;
/**
* @type {?}
* @private
*/
NzBackTopComponent.prototype.cd;
}
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