import e,{Component as t}from"react";import{DomHandler as n,ZIndexUtils as r,classNames as o,IconUtils as i}from"primereact/utils";import{CSSTransition as l}from"primereact/csstransition";import{Ripple as s}from"primereact/ripple";import c from"primereact/api";function p(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function u(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}function a(e){if(void 0===e)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return e}function f(e,t){return f=Object.setPrototypeOf||function(e,t){return e.__proto__=t,e},f(e,t)}function h(e,t){if("function"!=typeof t&&null!==t)throw new TypeError("Super expression must either be null or a function");e.prototype=Object.create(t&&t.prototype,{constructor:{value:e,writable:!0,configurable:!0}}),Object.defineProperty(e,"prototype",{writable:!1}),t&&f(e,t)}function m(e){return m="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},m(e)}function y(e,t){if(t&&("object"===m(t)||"function"==typeof t))return t;if(void 0!==t)throw new TypeError("Derived constructors may only return object or undefined");return a(e)}function d(e){return d=Object.setPrototypeOf?Object.getPrototypeOf:function(e){return e.__proto__||Object.getPrototypeOf(e)},d(e)}function b(){if("undefined"==typeof Reflect||!Reflect.construct)return!1;if(Reflect.construct.sham)return!1;if("function"==typeof Proxy)return!0;try{return Boolean.prototype.valueOf.call(Reflect.construct(Boolean,[],(function(){}))),!0}catch(e){return!1}}var v,E,w,k=function(f){h(S,t);var m,v,E,w,k,L=(m=S,v=b(),function(){var e,t=d(m);if(v){var n=d(this).constructor;e=Reflect.construct(t,arguments,n)}else e=t.apply(this,arguments);return y(this,e)});function S(t){var n;return p(this,S),(n=L.call(this,t)).state={visible:!1},n.onClick=n.onClick.bind(a(n)),n.onEnter=n.onEnter.bind(a(n)),n.onEntered=n.onEntered.bind(a(n)),n.onExited=n.onExited.bind(a(n)),n.scrollElementRef=e.createRef(),n}return E=S,(w=[{key:"onClick",value:function(){("window"===this.props.target?window:this.helper.parentElement).scroll({top:0,behavior:this.props.behavior})}},{key:"checkVisibility",value:function(e){this.setState({visible:e>this.props.threshold})}},{key:"bindParentScrollListener",value:function(){var e=this;this.scrollListener=function(){e.checkVisibility(e.helper.parentElement.scrollTop)},this.helper.parentElement.addEventListener("scroll",this.scrollListener)}},{key:"bindDocumentScrollListener",value:function(){var e=this;this.scrollListener=function(){e.checkVisibility(n.getWindowScrollTop())},window.addEventListener("scroll",this.scrollListener)}},{key:"unbindParentScrollListener",value:function(){this.scrollListener&&(this.helper.parentElement.removeEventListener("scroll",this.scrollListener),this.scrollListener=null)}},{key:"unbindDocumentScrollListener",value:function(){this.scrollListener&&(window.removeEventListener("scroll",this.scrollListener),this.scrollListener=null)}},{key:"onEnter",value:function(){r.set("overlay",this.scrollElementRef.current,c.autoZIndex,c.zIndex.overlay)}},{key:"onEntered",value:function(){this.props.onShow&&this.props.onShow()}},{key:"onExited",value:function(){r.clear(this.scrollElementRef.current),this.props.onHide&&this.props.onHide()}},{key:"componentDidMount",value:function(){"window"===this.props.target?this.bindDocumentScrollListener():"parent"===this.props.target&&this.bindParentScrollListener()}},{key:"componentWillUnmount",value:function(){"window"===this.props.target?this.unbindDocumentScrollListener():"parent"===this.props.target&&this.unbindParentScrollListener(),r.clear(this.scrollElementRef.current)}},{key:"render",value:function(){var t=this,n=o("p-scrolltop p-link p-component",{"p-scrolltop-sticky":"window"!==this.props.target},this.props.className),r="parent"===this.props.target;return e.createElement(e.Fragment,null,e.createElement(l,{nodeRef:this.scrollElementRef,classNames:"p-scrolltop",in:this.state.visible,timeout:{enter:150,exit:150},options:this.props.transitionOptions,unmountOnExit:!0,onEnter:this.onEnter,onEntered:this.onEntered,onExited:this.onExited},e.createElement("button",{ref:this.scrollElementRef,type:"button",className:n,style:this.props.style,onClick:this.onClick},i.getJSXIcon(this.props.icon,{className:"p-scrolltop-icon"},{props:this.props}),e.createElement(s,null))),r&&e.createElement("span",{ref:function(e){return t.helper=e},className:"p-scrolltop-helper"}))}}])&&u(E.prototype,w),k&&u(E,k),Object.defineProperty(E,"prototype",{writable:!1}),S}();w={target:"window",threshold:400,icon:"pi pi-chevron-up",behavior:"smooth",className:null,style:null,transitionOptions:null,onShow:null,onHide:null},(E="defaultProps")in(v=k)?Object.defineProperty(v,E,{value:w,enumerable:!0,configurable:!0,writable:!0}):v[E]=w;export{k as ScrollTop};