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var it = ( ) => ! 0 , C = class { constructor ( t , e , n ) { this . root = t , this . currentNode = t , this . nodeType = e , this . filter = n || it } isAcceptableNode ( t ) { let e = t . nodeType ; return ! ! ( ( e === Node . ELEMENT _NODE ? 1 : e === Node . TEXT _NODE ? 4 : 0 ) & this . nodeType ) && this . filter ( t ) } nextNode ( ) { let t = this . root , e = this . currentNode , n ; for ( ; ; ) { for ( n = e . firstChild ; ! n && e && e !== t ; ) n = e . nextSibling , n || ( e = e . parentNode ) ; if ( ! n ) return null ; if ( this . isAcceptableNode ( n ) ) return this . currentNode = n , n ; e = n } } previousNode ( ) { let t = this . root , e = this . currentNode , n ; for ( ; ; ) { if ( e === t ) return null ; if ( n = e . previousSibling , n ) for ( ; e = n . lastChild ; ) n = e ; else n = e . parentNode ; if ( ! n ) return null ; if ( this . isAcceptableNode ( n ) ) return this . currentNode = n , n ; e = n } } previousPONode ( ) { let t = this . root , e = this . currentNode , n ; for ( ; ; ) { for ( n = e . lastChild ; ! n && e && e !== t ; ) n = e . previousSibling , n || ( e = e . parentNode ) ; if ( ! n ) return null ; if ( this . isAcceptableNode ( n ) ) return this . currentNode = n , n ; e = n } } } ; var B = "\u200B" , J = navigator . userAgent , de = /Mac OS X/ . test ( J ) , fe = /Windows NT/ . test ( J ) , _e = /iP(?:ad|hone|od)/ . test ( J ) || de && ! ! navigator . maxTouchPoints , xt = /Android/ . test ( J ) , Fe = /Gecko\// . test ( J ) , se = /Edge\// . test ( J ) , st = ! se && /WebKit\// . test ( J ) , k = de || _e ? "Meta-" : "Ctrl-" , oe = st , He = "onbeforeinput" in document && "inputType" in new InputEvent ( "input" ) , I = /[^ \t\r\n]/ ; var at = /^(?:#text|A(?:BBR|CRONYM)?|B(?:R|D[IO])?|C(?:ITE|ODE)|D(?:ATA|EL|FN)|EM|FONT|HR|I(?:FRAME|MG|NPUT|NS)?|KBD|Q|R(?:P|T|UBY)|S(?:AMP|MALL|PAN|TR(?:IKE|ONG)|U[BP])?|TIME|U|VAR|WBR)$/ , ct = new Set ( [ "BR" , "HR" , "IFRAME" , "IMG" , "INPUT" ] ) , dt = 0 , xe = 1 , Pe = 2 , Ue = 3 , ue = new WeakMap , qe = ( ) => { ue = new WeakMap } , M = o => ct . has ( o . nodeName ) , be = o => { switch ( o . nodeType ) { case 3 : return xe ; case 1 : case 11 : if ( ue . has ( o ) ) return ue . get ( o ) ; break ; default : return dt } let t ; return Array . from ( o . childNodes ) . every ( N ) ? at . test ( o . nodeName ) ? t = xe : t = Pe : t = Ue , ue . set ( o , t ) , t } , N = o => be ( o ) === xe , P = o => be ( o ) === Pe , Q = o => be ( o ) === Ue ; var p = ( o , t , e ) => { let n = document . createElement ( o ) ; if ( t instanceof Array && ( e = t , t = null ) , t ) for ( let i in t ) { let s = t [ i ] ; s !== void 0 && n . setAttribute ( i , s ) } return e && e . forEach ( i => n . appendChild ( i ) ) , n } , Le = ( o , t ) => M ( o ) || o . nodeType !== t . nodeType || o . nodeName !== t . nodeName ? ! 1 : o instanceof HTMLElement && t instanceof HTMLElement ? o . nodeName !== "A" && o . className === t . className && o . style . cssText === t . style . cssText : ! 0 , he = ( o , t , e ) => { if ( o . nodeName !== t ) return ! 1 ; for ( let n in e ) if ( ! ( "getAttribute" in o ) || o . getAttribute ( n ) !== e [ n ] ) return ! 1 ; return ! 0 } , S = ( o , t , e , n ) => { for ( ; o && o !== t ; ) { if ( he ( o , e , n ) ) return o ; o = o . parentNode } return null } , me = ( o , t ) => { let e = o . childNodes ; for ( ; t && o instanceof Element ; ) o = e [ t - 1 ] , e = o . childNodes , t = e . length ; return o } , Re = ( o , t ) => { let e = o ; if ( e instanceof Element ) { let n = e . childNodes ; if ( t < n . length ) e = n [ t ] ; else { for ( ; e && ! e . nextSibling ; ) e = e . parentNode ; e && ( e = e . nextSibling ) } } return e } , y = o => o instanceof Element || o instanceof DocumentFragment ? o . childNodes . length : o instanceof CharacterData ? o . length : 0 , _ = o => { let t = document . createDocumentFragment ( ) , e = o . firstChild ; for ( ; e ; ) t . appendChild ( e ) , e = o . firstChild ; return t } , E = o => { let t = o . parentNode ; return t && t . removeChild ( o ) , o } , R = ( o , t ) => { let e = o . parentNode ; e && e . replaceChild ( t , o ) } ; var ft = o => o instanceof Element ? o . nodeName === "BR" : I . test ( o . data ) , ee = ( o , t ) => { let e = o . parentNode ; for ( ; N ( e ) ; ) e = e . parentNode ; let n = new C ( e , 5 , ft ) ; return n . currentNode = o , ! ! n . nextNode ( ) || t && ! n . previousNode ( ) } , re = ( o , t ) => { let e = new C ( o , 4 ) , n , i ; for ( ; n = e . nextNode ( ) ; ) for ( ; ( i = n . data . indexOf ( B ) ) > - 1 && ( ! t || n . parentNode !== t ) ; ) if ( n . length === 1 ) { let s = n , r = s . parentNode ; for ( ; r && ( r . removeChild ( s ) , e . currentNode = r , ! ( ! N ( r ) || y ( r ) ) ) ; ) s = r , r = s . parentNode ; break } else n . deleteData ( i , 1 ) } ; var ut = 0 , ht = 1 , mt = 2 , pt = 3 , K = ( o , t , e ) => { let n = document . createRange ( ) ; if ( n . selectNode ( t ) , e ) { let i = o . compareBoundaryPoints ( pt , n ) > - 1 , s = o . compareBoundaryPoints ( ht , n ) < 1 ; return ! i && ! s } else { let i = o . compareBoundaryPoints ( ut , n ) < 1 , s = o . compareBoundaryPoints ( mt , n ) > - 1 ; return i && s } } , T = o => { let { startContainer : t , startOffset : e , endContainer : n , endOffset : i } = o ; for ( ; ! ( t instanceof Text ) ; ) { let s = t . childNodes [ e ] ; if ( ! s || M ( s ) ) { if ( e && ( s = t . childNodes [ e - 1 ] , s instanceof Text ) ) { let r = s , l ; for ( ; ! r . length && ( l = r . previousSibling ) && l instanceof Text ; ) r . remove ( ) , r = l ; t = r , e = r . data . length } break } t = s , e = 0 } if ( i ) for ( ; ! ( n instanceof Text ) ; ) { let s = n . childNodes [ i - 1 ] ; if ( ! s || M ( s ) ) { if ( s && s .
` ,r=!1),i=n.nextNode();return s=s.replace(/ /g," "),s};var De=Array.prototype.indexOf,je=(o,t,e,n,i,s,r)=>{let l=o.clipboardData;if(se||!l)return!1;let a=s?"":ge(t),d=L(t,e),c=G(t,e),f=e;d===c&&d?.contains(t.commonAncestorContainer)&&(f=d);let u;n?u=H(t,e):(t=t.cloneRange(),T(t),q(t,f,f,e),u=t.cloneContents());let m=t.commonAncestorContainer;for(m instanceof Text&&(m=m.parentNode);m&&m!==f;){let g=m.cloneNode(!1);g.appendChild(u),u=g,m=m.parentNode}let h;if(u.childNodes.length===1&&u.childNodes[0]instanceof Text)a=u.childNodes[0].data.replace(/ /g," "),r=!0;else{let g=p("DIV");g.appendChild(u),h=g.innerHTML,i&&(h=i(h))}return s&&h!==void 0&&(a=s(h)),fe&&(a=a.replace(/ \r ? \n /g, ` \ r
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` ),s=this._config,r=s.blockTag,l=s.blockAttributes,a="</"+r+">",d="<"+r;for(let c in l)d+=" "+c+'="'+ke(l[c])+'"';d+=">";for(let c=0,f=i.length;c<f;c+=1){let u=i[c];u=ke(u).replace(/ (?=(?: | $ ))/g," "),c&&(u=d+(u||"<BR>")+a),i[c]=u}return this.insertHTML(i.join(""),e)}getSelectedText(t){return ge(t||this.getSelection())}getFontInfo(t){let e={color:void 0,backgroundColor:void 0,fontFamily:void 0,fontSize:void 0};t||(t=this.getSelection()),T(t);let n=0,i=t.commonAncestorContainer;if(t.collapsed||i instanceof Text)for(i instanceof Text&&(i=i.parentNode);n<4&&i;){let s=i.style;if(s){let r=s.color;!e.color&&r&&(e.color=r,n+=1);let l=s.backgroundColor;!e.backgroundColor&&l&&(e.backgroundColor=l,n+=1);let a=s.fontFamily;!e.fontFamily&&a&&(e.fontFamily=a,n+=1);let d=s.fontSize;!e.fontSize&&d&&(e.fontSize=d,n+=1)}i=i.parentNode}return e}hasFormat(t,e,n){t=t.toUpperCase(),e||(e={}),n||(n=this.getSelection()),!n.collapsed&&n.startContainer instanceof Text&&n.startOffset===n.startContainer.length&&n.startContainer.nextSibling&&n.setStartBefore(n.startContainer.nextSibling),!n.collapsed&&n.endContainer instanceof Text&&n.endOffset===0&&n.endContainer.previousSibling&&n.setEndAfter(n.endContainer.previousSibling);let i=this._root,s=n.commonAncestorContainer;if(S(s,i,t,e))return!0;if(s instanceof Text)return!1;let r=new C(s,4,d=>K(n,d,!0)),l=!1,a;for(;a=r.nextNode();){if(!S(a,i,t,e))return!1;l=!0}return l}changeFormat(t,e,n,i){return n||(n=this.getSelection()),this.saveUndoState(n),e&&(n=this._removeFormat(e.tag.toUpperCase(),e.attributes||{},n,i)),t&&(n=this._addFormat(t.tag.toUpperCase(),t.attributes||{},n)),this.setSelection(n),this._updatePath(n,!0),this.focus()}_addFormat(t,e,n){let i=this._root;if(n.collapsed){let s=x(p(t,e));j(n,s);let r=s.firstChild||s,l=r instanceof Text?r.length:0;n.setStart(r,l),n.collapse(!0);let a=s;for(;N(a);)a=a.parentNode;re(a,s)}else{let s=new C(n.commonAncestorContainer,5,c=>(c instanceof Text||c.nodeName==="BR"||c.nodeName==="IMG")&&K(n,c,!0)),{startContainer:r,startOffset:l,endContainer:a,endOffset:d}=n;if(s.currentNode=r,!(r instanceof Element)&&!(r instanceof Text)||!s.filter(r)){let c=s.nextNode();if(!c)return n;r=c,l=0}do{let c=s.currentNode;if(!S(c,i,t,e)){c===a&&c.length>d&&c.splitText(d),c===r&&l&&(c=c.splitText(l),a===r?(a=c,d-=l):a===r.parentNode&&(d+=1),r=c,l=0);let u=p(t,e);R(c,u),u.appendChild(c)}}while(s.nextNode());n= $ (r,l,a,d)}return n}_removeFormat(t,e,n,i){this._saveRangeToBookmark(n);let s;n.collapsed&&(oe?s=document.createTextNode(B):s=document.createTextNode(""),j(n,s));let r=n.commonAncestorContainer;for(;N(r);)r=r.parentNode;let l=n.startContainer,a=n.startOffset,d=n.endContainer,c=n.endOffset,f=[],u=(h,g)=>{if(K(n,h,!1))return;let b,O;if(!K(n,h,!0)){!(h instanceof HTMLInputElement)&&(!(h instanceof Text)||h.data)&&f.push([g,h]);return}if(h instanceof Text)h===d&&c!==h.length&&f.push([g,h.splitText(c)]),h===l&&a&&(h.splitText(a),f.push([g,h]));else for(b=h.firstChild;b;b=O)O=b.nextSibling,u(b,g)},m=Array.from(r.getElementsByTagName(t)).filter(h=>K(n,h,!0)&&he(h,t,e));if(i||m.forEach(h=>{u(h,h)}),f.forEach(([h,g])=>{h=h.cloneNode(!1),R(g,h),h.appendChild(g)}),m.forEach(h=>{R(h,_(h))}),oe&&s){s=s.parentNode;let h=s;for(;h&&N(h);)h=h.parentNode;h&&re(h,s)}return this._getRangeAndRemoveBookmark(n),s&&n.collapse(!1),te(r,n),n}bold(){return this.changeFormat({tag:"B"})}removeBold(){return this.changeFormat(null,{tag:"B"})}italic(){return this.changeFormat({tag:"I"})}removeItalic(){return this.changeFormat(null,{tag:"I"})}underline(){return this.changeFormat({tag:"U"})}removeUnderline(){return this.changeFormat(null,{tag:"U"})}strikethrough(){return this.changeFormat({tag:"S"})}removeStrikethrough(){return this.changeFormat(null,{tag:"S"})}subscript(){return this.changeFormat({tag:"SUB"},{tag:"SUP"})}removeSubscript(){return this.changeFormat(null,{tag:"SUB"})}superscript(){return this.changeFormat({tag:"SUP"},{tag:"SUB"})}removeSuperscript(){return this.changeFormat(null,{tag:"SUP"})}makeLink(t,e){let n=this.getSelection();if(n.collapsed){let i=t.indexOf(":")+1;if(i)for(;t[i]==
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` ||X(e,n))&&(r.data.charAt(u)=== `
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` ),x(s),r.length===u+1?e.setStartAfter(r):e.setStart(r,u+1)),e.collapse(!0),this.setSelection(e),this._updatePath(e,!0),this._docWasChanged(),this}if(!i||t||/^T[HD] $ /.test(i.nodeName))return Oe(e,"A",n),j(e,p("BR")),e.collapse(!1),this.setSelection(e),this._updatePath(e,!0),this;if((s=S(i,n,"LI"))&&(i=s),ce(i)){if(S(i,n,"UL")||S(i,n,"OL"))return this.decreaseListLevel(e),this;if(S(i,n,"BLOCKQUOTE"))return this.removeQuote(e),this}r=e.startContainer;let a=e.startOffset,d=this.tagAfterSplit[i.nodeName];l=w(r,a,i.parentNode,this._root);let c=this._config,f=null;for(d||(d=c.blockTag,f=c.blockAttributes),he(l,d,f)||(i=p(d,f),l.dir&&(i.dir=l.dir),R(l,i),i.appendChild(_(l)),l=i),re(i),Se(i),x(i);l instanceof Element;){let u=l.firstChild,m;if(l.nodeName==="A"&&(!l.textContent||l.textContent===B)){u=document.createTextNode(""),R(l,u),l=u;break}for(;u&&u instanceof Text&&!u.data&&(m=u.nextSibling,!(!m||m.nodeName==="BR"));)E(u),u=m;if(!u||u.nodeName==="BR"||u instanceof Text)break;l=u}return e= $ (l,0),this.setSelection(e),this._updatePath(e,!0),this}forEachBlock(t,e,n){n||(n=this.getSelection()),e&&this.saveUndoState(n);let i=this._root,s=L(n,i),r=G(n,i);if(s&&r)do if(t(s)||s===r)break;while(s=W(s,i));return e&&(this.setSelection(n),this._updatePath(n,!0)),this}modifyBlocks(t,e){e||(e=this.getSelection()),this._recordUndoState(e,this._isInUndoState);let n=this._root;ye(e,n),q(e,n,n,n);let i=Be(e,n,n);if(!e.collapsed){let s=e.endContainer;if(s===n)e.collapse(!1);else{for(;s.parentNode!==n;)s=s.parentNode;e.setStartBefore(s),e.collapse(!0)}}return j(e,t.call(this,i)),e.endOffset<e.endContainer.childNodes.length&&F(e.endContainer.childNodes[e.endOffset],n),F(e.startContainer.childNodes[e.startOffset],n),this._getRangeAndRemoveBookmark(e),this.setSelection(e),this._updatePath(e,!0),this}setTextAlignment(t){return this.forEachBlock(e=>{let n=e.className.split(/ \s +/).filter(i=>!!i&&!/^align/.test(i)).join(" ");t?(e.className=n+" align-"+t,e.style.textAlign=t):(e.className=n,e.style.textAlign="")},!0),this.focus()}setTextDirection(t){return this.forEachBlock(e=>{t?e.dir=t:e.removeAttribute("dir")},!0),this.focus()}_getListSelection(t,e){let n=t.commonAncestorContainer,i=t.startContainer,s=t.endContainer;for(;n&&n!==e&&!/^[OU]L $ /.test(n.nodeName);)n=n.parentNode;if(!n||n===e)return null;for(i===n&&(i=i.childNodes[t.startOffset]),s===n&&(s=s.childNodes[t.endOffset]);i&&i.parentNode!==n;)i=i.parentNode;for(;s&&s.parentNode!==n;)s=s.parentNode;return[n,i,s]}increaseListLevel(t){t||(t=this.getSelection());let e=this._root,n=this._getListSelection(t,e);if(!n)return this.focus();let[i,s,r]=n;if(!s||s===i.firstChild)return this.focus();this._recordUndoState(t,this._isInUndoState);let l=i.nodeName,a=s.previousSibling,d,c;a.nodeName!==l&&(d=this._config.tagAttributes[l.toLowerCase()],a=p(l,d),i.insertBefore(a,s));do c=s===r?null:s.nextSibling,a.appendChild(s);while(s=c);return c=a.nextSibling,c&&F(c,e),this._getRangeAndRemoveBookmark(t),this.setSelection(t),this._updatePath(t,!0),this.focus()}decreaseListLevel(t){t||(t=this.getSelection());let e=this._root,n=this._getListSelection(t,e);if(!n)return this.focus();let[i,s,r]=n;s||(s=i.firstChild),r||(r=i.lastChild),this._recordUndoState(t,this._isInUndoState);let l,a=null;if(s){let d=i.parentNode;if(a=r.nextSibling?w(i,r.nextSibling,d,e):i.nextSibling,d!==e&&d.nodeName==="LI"){for(d=d.parentNode;a;)l=a.nextSibling,r.appendChild(a),a=l;a=i.parentNode.nextSibling}let c=!/^[OU]L $ /.test(d.nodeName);do l=s===r?null:s.nextSibling,i.removeChild(s),c&&s.nodeName==="LI"&&(s=this.createDefaultBlock([_(s)])),d.insertBefore(s,a);while(s=l)}return i.firstChild||E(i),a&&F(a,e),this._getRangeAndRemoveBookmark(t),this.setSelection(t),this._updatePath(t,!0),this.focus()}_makeList(t,e){let n=ae(t,this._root),i=this._config.tagAttributes,s=i[e.toLowerCase()],r=i.li,l;for(;l=n.nextNode();)if(l.parentNode instanceof HTMLLIElement&&(l=l.parentNode,n.currentNode=l.lastChild),l instanceof HTMLLIElement){l=l.parentNode;let a=l.nodeName;a!==e&&/^[OU]L $ /.test(a)&&R(l,p(e,s,[_(l)]))}else{let a=p("LI",r);l.dir&&(a.dir=l.dir);let
` )):E(f)}for(a=r.querySelectorAll("CODE"),c=a.length;c--;)R(a[c],_(a[c]));i.childNodes.length&&i.appendChild(document.createTextNode( `
` )),i.appendChild(_(r))}let l=new C(i,4);for(;r=l.nextNode();)r.data=r.data.replace(/ /g," ");return i.normalize(),x(p("PRE",this._config.tagAttributes.pre,[i]))},t),this.focus()):this.changeFormat({tag:"CODE",attributes:this._config.tagAttributes.code},null,t),this}removeCode(){let t=this.getSelection(),e=t.commonAncestorContainer;return S(e,this._root,"PRE")?(this.modifyBlocks(i=>{let s=this._root,r=i.querySelectorAll("PRE"),l=r.length;for(;l--;){let a=r[l],d=new C(a,4),c;for(;c=d.nextNode();){let f=c.data;f=f.replace(/ (?= )/g," \x A0");let u=document.createDocumentFragment(),m;for(;(m=f.indexOf( `
` ))>-1;)u.appendChild(document.createTextNode(f.slice(0,m))),u.appendChild(p("BR")),f=f.slice(m+1);c.parentNode.insertBefore(u,c),c.data=f}D(a,s),R(a,_(a))}return i},t),this.focus()):this.changeFormat(null,{tag:"CODE"},t),this}toggleCode(){return this.hasFormat("PRE")||this.hasFormat("CODE")?this.removeCode():this.code(),this}_removeFormatting(t,e){for(let n=t.firstChild,i;n;n=i){if(i=n.nextSibling,N(n)){if(n instanceof Text||n.nodeName==="BR"||n.nodeName==="IMG"){e.appendChild(n);continue}}else if(P(n)){e.appendChild(this.createDefaultBlock([this._removeFormatting(n,document.createDocumentFragment())]));continue}this._removeFormatting(n,e)}return e}removeAllFormatting(t){if(t||(t=this.getSelection()),t.collapsed)return this.focus();let e=this._root,n=t.commonAncestorContainer;for(;n&&!P(n);)n=n.parentNode;if(n||(ye(t,e),n=e),n instanceof Text)return this.focus();this.saveUndoState(t),q(t,n,n,e);let i=t.startContainer,s=t.startOffset,r=t.endContainer,l=t.endOffset,a=document.createDocumentFragment(),d=document.createDocumentFragment(),c=w(r,l,n,e),f=w(i,s,n,e),u;for(;f!==c;)u=f.nextSibling,a.appendChild(f),f=u;if(this._removeFormatting(a,d),d.normalize(),f=d.firstChild,u=d.lastChild,f){n.insertBefore(d,c);let m=Array.from(n.childNodes);s=m.indexOf(f),l=u?m.indexOf(u)+1:0}else c&&(s=Array.from(n.childNodes).indexOf(c),l=s);return t.setStart(n,s),t.setEnd(n,l),te(n,t),T(t),this.setSelection(t),this._updatePath(t,!0),this.focus()}};var Mo=Ce;export{Mo as default};
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