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r(t),e=this.cursor,n=e.selection,this.notify("edit"),n||(e[t]?e[t].deleteTowards(t,e):e.parent.deleteOutOf(t,e)),e[Ce].siblingDeleted&&e[Ce].siblingDeleted(e.options,je),e[je].siblingDeleted&&e[je].siblingDeleted(e.options,Ce),e.parent.bubble("reflow"),e.parent.bubble("workingGroupChange"),this},t.backspace=function(){return this.deleteDir(Ce)},t.deleteForward=function(){return this.deleteDir(je)},this.onNotify(function(t){"select"!==t&&this.endSelection()}),t.selectDir=function(t){var e,n=this.notify("select").cursor,i=n.selection;r(t),n.anticursor||n.startSelection(),e=n[t],e?i&&i.ends[t]===e&&n.anticursor[-t]!==e?e.unselectInto(t,n):e.selectTowards(t,n):n.parent.selectOutOf(t,n),n.clearSelection(),n.select()||n.show()},t.selectLeft=function(){return this.selectDir(Ce)},t.selectRight=function(){return this.selectDir(je)}}),k=function(){function t(t){var e=S();return t.adopt(e,0,0),e}function e(t){var e,n=t[0]||S();for(e=1;e<t.length;e+=1)t[e].children().adopt(n,n.ends[je],0);return 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t=this;X(t.container[0]),t.textareaSelectionTimeout===d&&(t.textareaSelectionTimeout=setTimeout(function(){t.setTextareaSelection()}))},t.setTextareaSelection=function(){this.textareaSelectionTimeout=d;var t="";this.cursor.selection&&(t=this.cursor.selection.join("latex"),this.API.__options.statelessClipboard&&(t="$"+t+"$")),this.selectFn(t)},t.staticMathTextareaEvents=function(){function t(){s.detach(),e.blurred=!0}var e=this,n=(e.root,e.cursor),i=e.textarea,s=e.textareaSpan;this.container.prepend('<span class="mq-selectable">$'+e.exportLatex()+"$</span>"),e.blurred=!0,i.bind("cut paste",!1).focus(function(){e.blurred=!1}).blur(function(){n.selection&&n.selection.clear(),setTimeout(t)}),e.selectFn=function(t){i.val(t),t&&i.select()}},t.editablesTextareaEvents=function(){var t=this,e=(t.root,t.cursor),n=t.textarea,i=t.textareaSpan,s=x(n,this);this.selectFn=function(t){s.select(t)},this.container.prepend(i).on("cut",function(){e.selection&&setTimeout(function(){t.notify("edit"),e.parent.bubble("reflow")})}),this.focusBlurEvents()},t.typedText=function(t){if("\n"===t)return this.handle("enter");var e=this.notify().cursor;e.parent.write(e,t,e.show().replaceSelection()),this.scrollHoriz()},t.paste=function(t){this.API.__options.statelessClipboard&&(t="$"===t.slice(0,1)&&"$"===t.slice(-1)?t.slice(1,-1):"\\text{"+t+"}"),this.writeLatex(t).cursor.show()}}),O=ye(Te,function(t){t.finalizeInsert=function(t,e){var n=this;n.postOrder("finalizeTree",t),n.postOrder("contactWeld",e),n.postOrder("blur"),n.postOrder("reflow"),n[je].siblingCreated&&n[je].siblingCreated(t,Ce),n[Ce].siblingCreated&&n[Ce].siblingCreated(t,je),n.bubble("reflow")},t.contextMenu=function(){},t.showPopupMenu=function(t,e){var 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e,n,i,s,r,o,a,l,c;for("}"==t.substring(7,1)?(e=t.substring(1,7),t=t.substring(8,t.length-12).trim()):(e=t.substring(1,8),t=t.substring(9,t.length-13).trim()),n=t.split(/\\\\/).map(function(t){return t.trim()}),i=n.length,s=0,r=[],n.forEach(function(t){var e=t.split(/&/);s=Math.max(s,e.length),r=r.concat(e)}),o=ue("\\"+e,s,i),a=o.blocks=Array(o.numBlocks()),l=0;l<a.length;l++)c=a[l]=k.parse(r[l]),c.adopt(o,o.ends[je],0);return o})},t.finalizeTree=function(){var t,e,n;for(t=0;t<this.row;t++)for(e=0;e<this.col;e++)n=this.blocks[t*this.col+e],n.upOutOf=0==t&&0!=e?this.blocks[this.row*this.col-this.row+e-1]:this.blocks[(t-1)*this.col+e],n.downOutOf=t+1==this.row&&e+1!=this.col?this.blocks[e+1]:this.blocks[(t+1)*this.col+e]},t.cursorRowCol=function(t){for(var e=0,n=0,i=t.parent;0!==i[Ce];)e++,e==this.col&&(e=0,n++),i=i[Ce];return{row:n,col:e}},t.deleteRow=function(t){var e,n,i;if(1!=this.row){for(e=this.cursorRowCol(t),n=e.row*this.col,i=0;i<this.col;i++)this.blocks[n].remove(),this.blocks.splice(n,1);n>0&&n<this.blocks.length?(this.blocks[n][Ce]=this.blocks[n-1],this.blocks[n-1][je]=this.blocks[n]):0==n?this.blocks[n][Ce]=0:this.blocks[n-1][je]=0,this.jQ.children(".mq-matrix").first().children(".mq-row").eq(e.row).remove(),this.row--,this.finalizeTree(),t.insAtLeftEnd(this.blocks[e.row>0?(e.row-1)*this.col+e.col:e.col]),this.reflow(),this.bubble("workingGroupChange")}},t.deleteColumn=function(t){var e,n,i;if(1!=this.col){for(e=this.cursorRowCol(t),n=e.col,i=0;i<this.row;i++)this.blocks[n].remove(),this.blocks.splice(n,1),n>0&&n<this.blocks.length?(this.blocks[n][Ce]=this.blocks[n-1],this.blocks[n-1][je]=this.blocks[n]):0==n?this.blocks[n][Ce]=0:this.blocks[n-1][je]=0,n+=this.col-1;this.col--,this.finalizeTree(),t.insAtLeftEnd(this.blocks[e.col<this.col?e.row*this.col+e.col:e.row*this.col+e.col-1]),this.reflow(),this.bubble("workingGroupChange")}},t.insertRow=function(t,e){var n,i,s,r,o=this.cursorRowCol(t);for(n="undefined"==typeof e?0===t[Ce]&&0!==t[je]:e==Ce?!0:!1,i=o.row*this.col+(n?0:this.col),n?this.jQ.children(".mq-matrix").first().children(".mq-row").eq(o.row).before('<span class="mq-row"></span>'):this.jQ.children(".mq-matrix").first().children(".mq-row").eq(o.row).after('<span class="mq-row"></span>'),s=0;s<this.col;s++)r=S(),r.adopt(this,i+s>0?this.blocks[i+s-1]:0,i+s>0?this.blocks[i+s-1][je]:this.ends[Ce]),r.jQ=Qe('<span class="mq-cell mq-empty" '+we+'="'+r.id+'"></span>'),i+s>0&&(this.blocks[i+s-1][je]=r),this.blocks.splice(i+s,0,r),this.jQ.children(".mq-matrix").first().children(".mq-row").eq(o.row+(n?0:1)).append(r.jQ);i+s<this.blocks.length&&(this.blocks[i+s][Ce]=r,r[je]=this.blocks[i+s]),this.row++,this.finalizeTree(),t.insAtLeftEnd(this.blocks[i]),this.reflow(),this.bubble("workingGroupChange")},t.insertColumn=function(t,e){var n,i,s,r=this.cursorRowCol(t);for(n="undefined"==typeof e?0===t[Ce]&&0!==t[je]:e==Ce?!0:!1,i=this.row-1;i>=0;i--)s=S(),n?(s.adopt(this,i*this.col+r.col-1>=0?this.blocks[i*this.col+r.col-1]:0,this.blocks[i*this.col+r.col]),s.jQ=Qe('<span class="mq-cell mq-empty" '+we+'="'+s.id+'"></span>'),i*this.col+r.col-1>=0&&(this.blocks[i*this.col+r.col-1][je]=s),this.blocks[i*this.col+r.col][Ce]=s,this.blocks.splice(i*this.col+r.col,0,s),this.jQ.children(".mq-matrix").first().children(".mq-row").eq(i).children(".mq-cell").eq(r.col).before(s.jQ)):(s.adopt(this,this.blocks[i*this.col+r.col],i*this.col+r.col+1<this.row*this.col?this.blocks[i*this.col+r.col+1]:0),s.jQ=Qe('<span class="mq-cell mq-empty" '+we+'="'+s.id+'"></span>'),this.blocks[i*this.col+r.col][je]=s,i*this.col+r.col+1<this.row*this.col&&(this.blocks[i*this.col+r.col+1][Ce]=s),this.blocks.splice(i*this.col+r.col+1,0,s),this.jQ.children(".mq-matrix").first().children(".mq-row").eq(i).children(".mq-cell").eq(r.col).after(s.jQ));this.col++,this.finalizeTree(),t.insAtLeftEnd(t.parent[n?Ce:je]),this.reflow(),this.bubble("workingGroupChange")},t.moveOrInsertColumn=function(t){var e=this.cursorRowCol(t);return e.col+1==this.col?this.insertColumn(t):(t.insAtLeftEnd(t.parent[je]),void this.bubble("workingGroupChange"))}}),De.matrix=i(ue,"\\matrix",1,1),De.bmatrix=i(ue,"\\bmatrix",1,1),De.Bmatrix=i(ue,"\\Bmatrix",1,1),De.vmatrix=i(ue,"\\vmatrix",1,1),De.Vmatrix=i(ue,"\\Vmatrix",1,1),De.pmatrix=i(ue,"\\pmatrix",1,1),pe=ye(ye(y,p),function(e,n){e.init=function(t,e,i,s,r){n.init.call(this,"\\left"+s,d,[e,i]),this.side=t,this.sides={},this.sides[Ce]={ch:e,ctrlSeq:s},this.sides[je]={ch:i,ctrlSeq:r}},e.numBlocks=function(){return 1},e.html=function(){return this.htmlTemplate='<span class="mq-non-leaf"><span class="mq-scaled mq-paren'+(this.side===je?" mq-ghost":"")+'">'+this.sides[Ce].ch+'</span><span class="mq-non-leaf">&0</span><span class="mq-scaled mq-paren'+(this.side===Ce?" mq-ghost":"")+'">'+this.sides[je].ch+"</span></span>",n.html.call(this)},e.latex=function(){return"\\left"+this.sides[Ce].ctrlSeq+this.ends[Ce].latex()+"\\right"+this.sides[je].ctrlSeq},e.oppBrack=function(t,e){return t instanceof pe&&t.side&&t.side!==-e&&("|"===this.sides[this.side].ch||t.side===-this.side)&&t},e.closeOpposing=function(t){t.side=0,t.sides[this.side]=this.sides[this.side],t.delimjQs.eq(this.side===Ce?0:1).removeClass("mq-ghost").html(this.sides[this.side].ch)},e.createLeftOf=function(t){var e,i,s,r,o,a;if(!this.replacedFragment&&(e=this.oppBrack(t[Ce],Ce)||this.oppBrack(t[je],je)||this.oppBrack(t.parent.parent),!e&&t.options.enableMatrixShortcuts&&"\\left["===this.ctrlSeq&&0===t[Ce]&&0===t[je]&&"undefined"!=typeof t.parent.parent&&t.parent.parent.ctrlSeq===this.ctrlSeq)){if(i=t.parent.parent[Ce],s=t.parent.parent.parent,t.parent.parent.unwrap(),0!==i?t.insRightOf(i):t.insAtLeftEnd(s),t.options.autoOnBrackets)for(r=t[Ce];r instanceof I;)r.jQ.hasClass("mq-operator-name")&&r.italicize(!0),r.ctrlSeq=r.ctrlSeq.replace("\\","").replace("operatorname{","").replace("}","").trim(),r=r[Ce];return o=ue("\\bmatrix",1,1),void o.createLeftOf(t)}e?(a=this.side=-e.side,this.closeOpposing(e),e===t.parent.parent&&t[a]&&(Ae(t[a],t.parent.ends[a],-a).disown().withDirAdopt(-a,e.parent,e,e[a]).jQ.insDirOf(a,e.jQ),e.bubble("reflow"))):(e=this,a=e.side,e.replacedFragment?e.side=0:t[-a]&&(e.replaces(Ae(t[-a],t.parent.ends[-a],a)),t[-a]=0),n.createLeftOf.call(e,t)),a===Ce?t.insAtLeftEnd(e.ends[Ce]):t.insRightOf(e),t.parent.bubble("workingGroupChange")},e.placeCursor=t,e.unwrap=function(){this.ends[Ce].children().disown().adopt(this.parent,this,this[je]).jQ.insertAfter(this.jQ),this.remove()},e.deleteSide=function(t,e,n){var i,s=this.parent,r=this[t],o=s.ends[t];return t===this.side?(this.unwrap(),void(r?n.insDirOf(-t,r):n.insAtDirEnd(t,s))):(this.side=-t,void(this.oppBrack(this.ends[Ce].ends[this.side],t)?(this.closeOpposing(this.ends[Ce].ends[this.side]),i=this.ends[Ce].ends[t],this.unwrap(),i.siblingCreated&&i.siblingCreated(n.options,t),r?n.insDirOf(-t,r):n.insAtDirEnd(t,s)):(this.oppBrack(this.parent.parent,t)?(this.parent.parent.closeOpposing(this),this.parent.parent.unwrap()):(this.sides[t]={ch:fe[this.sides[this.side].ch],ctrlSeq:fe[this.sides[this.side].ctrlSeq]},this.delimjQs.removeClass("mq-ghost").eq(t===Ce?0:1).addClass("mq-ghost").html(this.sides[t].ch)),r?(i=this.ends[Ce].ends[t],Ae(r,o,-t).disown().withDirAdopt(-t,this.ends[Ce],i,0).jQ.insAtDirEnd(t,this.ends[Ce].jQ.removeClass("mq-empty")),i.siblingCreated&&i.siblingCreated(n.options,t),n.insDirOf(-t,r)):e?n.insDirOf(t,this):n.insAtDirEnd(t,this.ends[Ce]))))},e.deleteTowards=function(t,e){this.deleteSide(-t,!1,e)},e.finalizeTree=function(t){this.ends[Ce].deleteOutOf=function(t,e){this.parent.deleteSide(t,!0,e)},t.autoOnBrackets&&this[Ce]instanceof I&&this[Ce].autoUnItalicize(t,"\\left["!==this.ctrlSeq),this.finalizeTree=this.intentionalBlur=function(){this.delimjQs.eq(this.side===Ce?1:0).removeClass("mq-ghost"),this.side=0}},e.siblingCreated=function(t,e){e===-this.side&&this.finalizeTree()}}),fe={"(":")",")":"(","[":"]","]":"[","{":"}","}":"{","\\{":"\\}","\\}":"\\{","&lang;":"&rang;","&rang;":"&lang;","\\langle ":"\\rangle ","\\rangle ":"\\langle ","|":"|"},f("("),f("["),f("{","\\{"),De.langle=i(pe,Ce,"&lang;","&rang;","\\langle ","\\rangle "),De.rangle=i(pe,je,"&lang;","&rang;","\\langle ","\\rangle "),_e["|"]=i(pe,Ce,"|","|","|","|"),De.left=ye(y,function(t){t.parser=function(){var t=q.regex,e=q.string,n=(q.succeed,q.optWhitespace);return n.then(t(/^(?:[([|]|\\\{)/)).then(function(i){var s="\\"===i.charAt(0)?i.slice(1):i;return k.then(function(r){return e("\\right").skip(n).then(t(/^(?:[\])|]|\\\})/)).map(function(t){var e="\\"===t.charAt(0)?t.slice(1):t,n=pe(0,s,e,i,t);return n.blocks=[r],r.adopt(n,0,0),n})})})}}),De.right=ye(y,function(t){t.parser=function(){return q.fail("unmatched \\right")}}),de=De.binom=De.binomial=ye(ye(y,p),function(t){t.ctrlSeq="\\binom",t.htmlTemplate='<span class="mq-non-leaf"><span class="mq-paren mq-scaled">(</span><span class="mq-non-leaf"><span class="mq-array mq-non-leaf"><span>&0</span><span>&1</span></span></span><span class="mq-paren mq-scaled">)</span></span>',t.textTemplate=["choose(",",",")"]}),me=De.choose=ye(de,function(t){t.createLeftOf=ae.prototype.createLeftOf}),ge=ye(a.MathField,function(t){t.init=function(t,e){c(t),this.__options=g();var n=Re(this,t,e);n.editable=!0,n.createTextarea(),n.editablesTextareaEvents(),n.cursor.insAtRightEnd(t)}}),De.MathQuillMathField=ye(y,function(t,e){t.ctrlSeq="\\MathQuillMathField",t.htmlTemplate='<span class="mq-editable-field"><span class="mq-root-block">&0</span></span>',t.parser=function(){var t=this,n=q.string,i=q.regex,s=q.succeed;return n("[").then(i(/^[a-z][a-z0-9]*/i)).skip(n("]")).map(function(e){t.name=e}).or(s()).then(e.parser.call(t))},t.finalizeTree=function(){ge(this.ends[Ce],this.jQ)},t.registerInnerField=function(t){t.push(t[this.name]=this.ends[Ce].controller.API)},t.latex=function(){return this.ends[Ce].latex()},t.text=function(t){return this.ends[Ce].text(t)}})}();