primeng
Version:
[](https://opensource.org/licenses/MIT) [](https://badge.fury.io/js/primeng) [ • 6.65 kB
JavaScript
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core'), require('@angular/common'), require('@angular/animations'), require('primeng/dom')) :
typeof define === 'function' && define.amd ? define('primeng/scrolltop', ['exports', '@angular/core', '@angular/common', '@angular/animations', 'primeng/dom'], factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory((global.primeng = global.primeng || {}, global.primeng.scrolltop = {}), global.ng.core, global.ng.common, global.ng.animations, global.primeng.dom));
}(this, (function (exports, core, common, animations, dom) { 'use strict';
var ScrollTop = /** @class */ (function () {
function ScrollTop(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;
}
ScrollTop.prototype.ngOnInit = function () {
if (this.target === 'window')
this.bindDocumentScrollListener();
else if (this.target === 'parent')
this.bindParentScrollListener();
};
ScrollTop.prototype.onClick = function () {
var scrollElement = this.target === 'window' ? window : this.el.nativeElement.parentElement;
scrollElement.scroll({
top: 0,
behavior: this.behavior
});
};
ScrollTop.prototype.onEnter = function () {
this.el.nativeElement.children[0].style.zIndex = dom.DomHandler.generateZIndex();
};
ScrollTop.prototype.checkVisibility = function (scrollY) {
if (scrollY > this.threshold)
this.visible = true;
else
this.visible = false;
this.cd.markForCheck();
};
ScrollTop.prototype.bindParentScrollListener = function () {
var _this = this;
this.scrollListener = function () {
_this.checkVisibility(_this.el.nativeElement.parentElement.scrollTop);
};
this.el.nativeElement.parentElement.addEventListener('scroll', this.scrollListener);
};
ScrollTop.prototype.bindDocumentScrollListener = function () {
var _this = this;
this.scrollListener = function () {
_this.checkVisibility(dom.DomHandler.getWindowScrollTop());
};
window.addEventListener('scroll', this.scrollListener);
};
ScrollTop.prototype.unbindParentScrollListener = function () {
if (this.scrollListener) {
this.el.nativeElement.parentElement.removeEventListener('scroll', this.scrollListener);
this.scrollListener = null;
}
};
ScrollTop.prototype.unbindDocumentScrollListener = function () {
if (this.scrollListener) {
window.removeEventListener('scroll', this.scrollListener);
this.scrollListener = null;
}
};
ScrollTop.prototype.containerClass = function () {
return {
'p-scrolltop p-link p-component': true,
'p-scrolltop-sticky': this.target !== 'window'
};
};
ScrollTop.prototype.ngOnDestroy = function () {
if (this.target === 'window')
this.unbindDocumentScrollListener();
else if (this.target === 'parent')
this.unbindParentScrollListener();
};
return ScrollTop;
}());
ScrollTop.decorators = [
{ type: core.Component, args: [{
selector: 'p-scrollTop',
template: "\n <button *ngIf=\"visible\" [@animation]=\"{value: 'open', params: {showTransitionParams: showTransitionOptions, hideTransitionParams: hideTransitionOptions}}\" (@animation.start)=\"onEnter()\"\n [ngClass]=\"containerClass()\" (click)=\"onClick()\" [class]=\"styleClass\" [ngStyle]=\"style\" type=\"button\">\n <span [class]=\"icon\" [ngClass]=\"'p-scrolltop-icon'\"></span>\n </button>\n ",
changeDetection: core.ChangeDetectionStrategy.OnPush,
encapsulation: core.ViewEncapsulation.None,
animations: [
animations.trigger('animation', [
animations.state('void', animations.style({
opacity: 0
})),
animations.state('open', animations.style({
opacity: 1
})),
animations.transition('void => open', animations.animate('{{showTransitionParams}}')),
animations.transition('open => void', animations.animate('{{hideTransitionParams}}')),
])
],
styles: [".p-scrolltop{align-items:center;bottom:20px;display:flex;justify-content:center;position:fixed;right:20px}.p-scrolltop-sticky{position:sticky}.p-scrolltop-sticky.p-link{margin-left:auto}"]
},] }
];
ScrollTop.ctorParameters = function () { return [
{ type: core.ElementRef },
{ type: core.ChangeDetectorRef }
]; };
ScrollTop.propDecorators = {
styleClass: [{ type: core.Input }],
style: [{ type: core.Input }],
target: [{ type: core.Input }],
threshold: [{ type: core.Input }],
icon: [{ type: core.Input }],
behavior: [{ type: core.Input }],
showTransitionOptions: [{ type: core.Input }],
hideTransitionOptions: [{ type: core.Input }]
};
var ScrollTopModule = /** @class */ (function () {
function ScrollTopModule() {
}
return ScrollTopModule;
}());
ScrollTopModule.decorators = [
{ type: core.NgModule, args: [{
imports: [common.CommonModule],
exports: [ScrollTop],
declarations: [ScrollTop]
},] }
];
/**
* Generated bundle index. Do not edit.
*/
exports.ScrollTop = ScrollTop;
exports.ScrollTopModule = ScrollTopModule;
Object.defineProperty(exports, '__esModule', { value: true });
})));
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