ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
190 lines • 12.9 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* @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, Output, TemplateRef, ViewEncapsulation } from '@angular/core';
import { fadeMotion, toNumber, NzScrollService } from 'ng-zorro-antd/core';
import { fromEvent } from 'rxjs';
import { distinctUntilChanged, throttleTime } from 'rxjs/operators';
export class NzBackTopComponent {
/**
* @param {?} scrollSrv
* @param {?} doc
* @param {?} platform
* @param {?} cd
*/
constructor(scrollSrv, doc, platform, cd) {
this.scrollSrv = scrollSrv;
this.doc = doc;
this.platform = platform;
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$.unsubscribe();
}
}
/**
* @private
* @return {?}
*/
registerScrollEvent() {
if (!this.platform.isBrowser) {
return;
}
this.removeListen();
this.handleScroll();
this.scroll$ = 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',
exportAs: 'nzBackTop',
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: Platform },
{ 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.platform;
/**
* @type {?}
* @private
*/
NzBackTopComponent.prototype.cd;
}
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