@progress/kendo-react-layout/splitter/Splitter.js

React Layout components enable you to create a perceptive and intuitive layout of web projects. KendoReact Layout package

/**
 * @license
 *-------------------------------------------------------------------------------------------
 * Copyright © 2025 Progress Software Corporation. All rights reserved.
 * Licensed under commercial license. See LICENSE.md in the package root for more information
 *-------------------------------------------------------------------------------------------
 */
"use strict";Object.defineProperty(exports,Symbol.toStringTag,{value:"Module"});const T=require("react"),w=require("./SplitterPane.js"),R=require("./SplitterBar.js"),C=require("@progress/kendo-react-common"),B=require("../package-metadata.js"),D=require("./messages/index.js"),_=require("@progress/kendo-react-intl");function N(d){const i=Object.create(null,{[Symbol.toStringTag]:{value:"Module"}});if(d){for(const e in d)if(e!=="default"){const t=Object.getOwnPropertyDescriptor(d,e);Object.defineProperty(i,e,t.get?t:{enumerable:!0,get:()=>d[e]})}}return i.default=d,Object.freeze(i)}const m=N(T),L={collapsible:!1,collapsed:!1,resizable:!0,scrollable:!0},q=150,E=class E extends m.Component{constructor(i){super(i),this.showLicenseWatermark=!1,this._container=null,this.validatePanes=e=>{if(!e.filter(n=>n.size===void 0).length)throw new Error("The Splitter should have at least one pane without a set size.")},this.mapPaneOptions=(e,t)=>{const n=this.orientation,{dragIndex:r,isDragging:a}=this.state,l=[];for(let s=0;s<t.length;s++){let o=!1;const p=t[s];m.isValidElement(p)&&(o=p.type.displayName==="Splitter");let h=!1;a&&r!==void 0&&(h=r===s||r+1===s),l.push({...L,orientation:n,containsSplitter:o,overlay:h,...(e||[])[s]})}return l},this.mapSplitterPanes=(e,t)=>{const n=_.provideLocalizationService(this).toLanguageString(D.splitBarLabel,D.messages[D.splitBarLabel]);return e.map((r,a)=>{let l;const s=a*2,o=s+1;if(a+1<e.length){const h=e[a+1];l=m.createElement(R.SplitterBar,{key:o,index:a,orientation:r.orientation,prev:r,next:h,ariaLabel:n,onDrag:this.onBarDragResize,onToggle:this.onBarToggle,onKeyboardResize:this.onBarKeyboardResize,isRtl:this.isRtl})}return[m.createElement(w.SplitterPane,{key:s,...r},t[a]),l]})},this.onBarToggle=(e,t)=>{const r=this.panesOptions(this.panesContent).map((a,l)=>{const s=this.getPaneProps(a);return l===e?{...s,collapsed:!a.collapsed}:{...s}});this.props.onChange&&this.props.onChange({newState:r,isLast:!0,nativeEvent:t})},this.onBarDragResize=(e,t,n,r,a)=>{const l=new Date().getTime(),{pageX:s,pageY:o}=e,{prevElement:p,nextElement:h}=this.surroudingPanes(t);if(!p||!h)return;if(r){this.setState({isDragging:!0,dragIndex:n,startTime:l,originalX:s,originalY:o,originalPrevSize:this.elementSize(p),originalNextSize:this.elementSize(h)});return}const{originalPrevSize:P,originalNextSize:c,startTime:v,originalX:f,originalY:S}=this.state;if(!r&&l-v<q){a&&this.resetDragState();return}let g;this.orientation==="vertical"?g=o-S:this.isRtl?g=f-s:g=s-f,this.resize(n,n+1,P,c,g,a,e),a&&this.resetDragState()},this.onBarKeyboardResize=(e,t,n,r)=>{const{prevElement:a,nextElement:l}=this.surroudingPanes(e),s=this.elementSize(a),o=this.elementSize(l);this.resize(t,t+1,s,o,n,!0,r)},this.containerSize=()=>this._container?this.elementSize(this._container,!0):0,this.panesOptions=e=>this.mapPaneOptions(this.panes,e),this.elementSize=(e,t)=>{const n=t?"client":"offset";return this.orientation==="vertical"?e[`${n}Height`]:e[`${n}Width`]},this.clamp=(e,t,n)=>Math.min(t,Math.max(e,n)),this.fixedSize=e=>e&&e.length>0,this.showLicenseWatermark=!C.validatePackage(B.packageMetadata,{component:"Splitter"}),this.state={isDragging:!1,dragIndex:void 0,startTime:0,originalX:0,originalY:0,originalPrevSize:0,originalNextSize:0,panes:i.defaultPanes||[]}}get isControlledState(){return this.props.panes!==void 0}get panes(){return this.panesDuringOnChange!==void 0?this.panesDuringOnChange:this.isControlledState?this.props.panes:this.state.panes}get orientation(){return this.props.orientation||"horizontal"}get isRtl(){return this._container&&getComputedStyle(this._container).direction==="rtl"||!1}get panesContent(){return m.Children.toArray(this.props.children).filter(i=>i)}render(){const i=this.panesContent,e=this.panesOptions(i),t=C.classNames("k-splitter","k-splitter-flex",`k-splitter-${this.orientation}`,this.props.className);return this.validatePanes(e),m.createElement("div",{id:this.props.id,style:this.props.style,ref:n=>{this._container=n},className:t},this.mapSplitterPanes(e,i),this.showLicenseWatermark&&m.createElement(C.WatermarkOverlay,null))}surroudingPanes(i){return{prevElement:i.previousElementSibling,nextElement:i.nextElementSibling}}isPercent(i){return/%$/.test(i)}toPixels(i,e){let t=parseInt(i,10);return this.isPercent(i)&&(t=e*t/100),t}resetDragState(){this.setState({isDragging:!1,dragIndex:void 0,startTime:0,originalX:0,originalY:0,originalPrevSize:0,originalNextSize:0})}resize(i,e,t,n,r,a,l){const s=this.panesOptions(this.panesContent),o=s[i],p=s[e],h=t+n,P=this.containerSize(),c=u=>this.toPixels(u,P),v={index:i,initialSize:t,min:c(o.min)||h-c(p.max)||0,max:c(o.max)||h-c(p.min)||h},f={index:e,initialSize:n,min:c(p.min)||h-c(o.max)||0,max:c(p.max)||h-c(o.min)||h},S=(u,x)=>{const z=s[u.index],k=this.clamp(u.min,u.max,u.initialSize+x);return this.isPercent(z.size||"")?100*k/P+"%":k+"px"};let g,O;this.fixedSize(o.size)&&this.fixedSize(p.size)?(g=S(v,r),O=S(f,-r)):p.collapsible||this.fixedSize(p.size)?O=S(f,-r):g=S(v,r);const y=s.map((u,x)=>{const z=this.getPaneProps(u);return x===i?{...z,size:g}:x===e?{...z,size:O}:{...z}});this.panesDuringOnChange=y,this.isControlledState||this.setState({panes:y}),this.props.onChange&&this.props.onChange({newState:y,isLast:a,nativeEvent:l}),this.panesDuringOnChange=void 0}getPaneProps(i){const{orientation:e,overlay:t,containsSplitter:n,...r}=i;return r}};E.displayName="Splitter";let b=E;exports.Splitter=b;