2023-01-04 09:45:08 +01:00
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!function(e,t){if("object"==typeof exports&&"object"==typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var i=t();for(var s in i)("object"==typeof exports?exports:e)[s]=i[s]}}(self,(function(){return(()=>{"use strict";var e={4567:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.AccessibilityManager=void 0;const s=i(9042),r=i(6114),n=i(9924),o=i(3656),a=i(844),h=i(5596),c=i(9631);class l extends a.Disposable{constructor(e,t){super(),this._terminal=e,this._renderService=t,this._liveRegionLineCount=0,this._charsToConsume=[],this._charsToAnnounce="",this._accessibilityTreeRoot=document.createElement("div"),this._accessibilityTreeRoot.classList.add("xterm-accessibility"),this._accessibilityTreeRoot.tabIndex=0,this._rowContainer=document.createElement("div"),this._rowContainer.setAttribute("role","list"),this._rowContainer.classList.add("xterm-accessibility-tree"),this._rowElements=[];for(let e=0;e<this._terminal.rows;e++)this._rowElements[e]=this._createAccessibilityTreeNode(),this._rowContainer.appendChild(this._rowElements[e]);if(this._topBoundaryFocusListener=e=>this._handleBoundaryFocus(e,0),this._bottomBoundaryFocusListener=e=>this._handleBoundaryFocus(e,1),this._rowElements[0].addEventListener("focus",this._topBoundaryFocusListener),this._rowElements[this._rowElements.length-1].addEventListener("focus",this._bottomBoundaryFocusListener),this._refreshRowsDimensions(),this._accessibilityTreeRoot.appendChild(this._rowContainer),this._renderRowsDebouncer=new n.TimeBasedDebouncer(this._renderRows.bind(this)),this._refreshRows(),this._liveRegion=document.createElement("div"),this._liveRegion.classList.add("live-region"),this._liveRegion.setAttribute("aria-live","assertive"),this._accessibilityTreeRoot.appendChild(this._liveRegion),!this._terminal.element)throw new Error("Cannot enable accessibility before Terminal.open");this._terminal.element.insertAdjacentElement("afterbegin",this._accessibilityTreeRoot),this.register(this._renderRowsDebouncer),this.register(this._terminal.onResize((e=>this._handleResize(e.rows)))),this.register(this._terminal.onRender((e=>this._refreshRows(e.start,e.end)))),this.register(this._terminal.onScroll((()=>this._refreshRows()))),this.register(this._terminal.onA11yChar((e=>this._handleChar(e)))),this.register(this._terminal.onLineFeed((()=>this._handleChar("\n")))),this.register(this._terminal.onA11yTab((e=>this._handleTab(e)))),this.register(this._terminal.onKey((e=>this._handleKey(e.key)))),this.register(this._terminal.onBlur((()=>this._clearLiveRegion()))),this.register(this._renderService.onDimensionsChange((()=>this._refreshRowsDimensions()))),this._screenDprMonitor=new h.ScreenDprMonitor(window),this.register(this._screenDprMonitor),this._screenDprMonitor.setListener((()=>this._refreshRowsDimensions())),this.register((0,o.addDisposableDomListener)(window,"resize",(()=>this._refreshRowsDimensions()))),this.register((0,a.toDisposable)((()=>{(0,c.removeElementFromParent)(this._accessibilityTreeRoot),this._rowElements.length=0})))}_handleBoundaryFocus(e,t){const i=e.target,s=this._rowElements[0===t?1:this._rowElements.length-2];if(i.getAttribute("aria-posinset")===(0===t?"1":`${this._terminal.buffer.lines.length}`))return;if(e.relatedTarget!==s)return;let r,n;if(0===t?(r=i,n=this._rowElements.pop(),this._rowContainer.removeChild(n)):(r=this._rowElements.shift(),n=i,this._rowContainer.removeChild(r)),r.removeEventListener("focus",this._topBoundaryFocusListener),n.removeEventListener("focus",this._bottomBoundaryFocusListener),0===t){const e=this._createAccessibilityTreeNode();this._rowElements.unshift(e),this._rowContainer.insertAdjacentElement("afterbegin",e)}else{const e=this._createAccessibilityTreeNode();this._rowElements.push(e),this._rowContainer.appendChild(e)}this._rowElements[0].addEventListener("focus",this._topBoundaryFocusListener),this._rowElements[this._rowElements.length-1].addEventListener("focus",this._bottomBoundaryFocusListener),this._terminal.scrollLines(0===t?-1:1),this._rowElements[0===t?1:this._rowElements.length-2]
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