primeng/fesm2015/primeng-scrolltop.js

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import * as i0 from '@angular/core';
import { Component, ChangeDetectionStrategy, ViewEncapsulation, Input, NgModule } from '@angular/core';
import * as i1 from '@angular/common';
import { CommonModule } from '@angular/common';
import { trigger, state, style, transition, animate } from '@angular/animations';
import { DomHandler } from 'primeng/dom';

class ScrollTop {
    constructor(el, cd) {
        this.el = el;
        this.cd = cd;
        this.target = "window";
        this.threshold = 400;
        this.icon = "pi pi-chevron-up";
        this.behavior = "smooth";
        this.showTransitionOptions = '.15s';
        this.hideTransitionOptions = '.15s';
        this.visible = false;
    }
    ngOnInit() {
        if (this.target === 'window')
            this.bindDocumentScrollListener();
        else if (this.target === 'parent')
            this.bindParentScrollListener();
    }
    onClick() {
        let scrollElement = this.target === 'window' ? window : this.el.nativeElement.parentElement;
        scrollElement.scroll({
            top: 0,
            behavior: this.behavior
        });
    }
    onEnter() {
        this.el.nativeElement.children[0].style.zIndex = DomHandler.generateZIndex();
    }
    checkVisibility(scrollY) {
        if (scrollY > this.threshold)
            this.visible = true;
        else
            this.visible = false;
        this.cd.markForCheck();
    }
    bindParentScrollListener() {
        this.scrollListener = () => {
            this.checkVisibility(this.el.nativeElement.parentElement.scrollTop);
        };
        this.el.nativeElement.parentElement.addEventListener('scroll', this.scrollListener);
    }
    bindDocumentScrollListener() {
        this.scrollListener = () => {
            this.checkVisibility(DomHandler.getWindowScrollTop());
        };
        window.addEventListener('scroll', this.scrollListener);
    }
    unbindParentScrollListener() {
        if (this.scrollListener) {
            this.el.nativeElement.parentElement.removeEventListener('scroll', this.scrollListener);
            this.scrollListener = null;
        }
    }
    unbindDocumentScrollListener() {
        if (this.scrollListener) {
            window.removeEventListener('scroll', this.scrollListener);
            this.scrollListener = null;
        }
    }
    containerClass() {
        return {
            'p-scrolltop p-link p-component': true,
            'p-scrolltop-sticky': this.target !== 'window'
        };
    }
    ngOnDestroy() {
        if (this.target === 'window')
            this.unbindDocumentScrollListener();
        else if (this.target === 'parent')
            this.unbindParentScrollListener();
    }
}
ScrollTop.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: ScrollTop, deps: [{ token: i0.ElementRef }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Component });
ScrollTop.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "12.0.4", type: ScrollTop, selector: "p-scrollTop", inputs: { styleClass: "styleClass", style: "style", target: "target", threshold: "threshold", icon: "icon", behavior: "behavior", showTransitionOptions: "showTransitionOptions", hideTransitionOptions: "hideTransitionOptions" }, ngImport: i0, template: `
        <button  *ngIf="visible" [@animation]="{value: 'open', params: {showTransitionParams: showTransitionOptions, hideTransitionParams: hideTransitionOptions}}" (@animation.start)="onEnter()"
            [ngClass]="containerClass()" (click)="onClick()" [class]="styleClass" [ngStyle]="style" type="button">
            <span [class]="icon" [ngClass]="'p-scrolltop-icon'"></span>
        </button>
    `, isInline: true, styles: [".p-scrolltop{position:fixed;bottom:20px;right:20px;display:flex;align-items:center;justify-content:center}.p-scrolltop-sticky{position:sticky}.p-scrolltop-sticky.p-link{margin-left:auto}"], directives: [{ type: i1.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { type: i1.NgClass, selector: "[ngClass]", inputs: ["class", "ngClass"] }, { type: i1.NgStyle, selector: "[ngStyle]", inputs: ["ngStyle"] }], animations: [
        trigger('animation', [
            state('void', style({
                opacity: 0
            })),
            state('open', style({
                opacity: 1
            })),
            transition('void => open', animate('{{showTransitionParams}}')),
            transition('open => void', animate('{{hideTransitionParams}}')),
        ])
    ], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: ScrollTop, decorators: [{
            type: Component,
            args: [{
                    selector: 'p-scrollTop',
                    template: `
        <button  *ngIf="visible" [@animation]="{value: 'open', params: {showTransitionParams: showTransitionOptions, hideTransitionParams: hideTransitionOptions}}" (@animation.start)="onEnter()"
            [ngClass]="containerClass()" (click)="onClick()" [class]="styleClass" [ngStyle]="style" type="button">
            <span [class]="icon" [ngClass]="'p-scrolltop-icon'"></span>
        </button>
    `,
                    changeDetection: ChangeDetectionStrategy.OnPush,
                    encapsulation: ViewEncapsulation.None,
                    styleUrls: ['./scrolltop.css'],
                    animations: [
                        trigger('animation', [
                            state('void', style({
                                opacity: 0
                            })),
                            state('open', style({
                                opacity: 1
                            })),
                            transition('void => open', animate('{{showTransitionParams}}')),
                            transition('open => void', animate('{{hideTransitionParams}}')),
                        ])
                    ]
                }]
        }], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: i0.ChangeDetectorRef }]; }, propDecorators: { styleClass: [{
                type: Input
            }], style: [{
                type: Input
            }], target: [{
                type: Input
            }], threshold: [{
                type: Input
            }], icon: [{
                type: Input
            }], behavior: [{
                type: Input
            }], showTransitionOptions: [{
                type: Input
            }], hideTransitionOptions: [{
                type: Input
            }] } });
class ScrollTopModule {
}
ScrollTopModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: ScrollTopModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
ScrollTopModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: ScrollTopModule, declarations: [ScrollTop], imports: [CommonModule], exports: [ScrollTop] });
ScrollTopModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: ScrollTopModule, imports: [[CommonModule]] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: ScrollTopModule, decorators: [{
            type: NgModule,
            args: [{
                    imports: [CommonModule],
                    exports: [ScrollTop],
                    declarations: [ScrollTop]
                }]
        }] });

/**
 * Generated bundle index. Do not edit.
 */

export { ScrollTop, ScrollTopModule };
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