`),o=r),o=this._htmlDataProcessor.toView(o);const s=new cn(this,"inputTransformation");this.fire(s,{content:o,dataTransfer:i}),s.stop.called&&t.stop(),n.scrollToTheSelection()},{priority:"low"}),this.listenTo(this,"inputTransformation",(t,e)=>{if(!e.content.isEmpty){const n=this.editor.data,i=this.editor.model,o=n.toModel(e.content,"$clipboardHolder");if(0==o.childCount)return;i.insertContent(o),t.stop()}},{priority:"low"}),this.listenTo(i,"copy",o,{priority:"low"}),this.listenTo(i,"cut",(e,n)=>{t.isReadOnly?n.preventDefault():o(e,n)},{priority:"low"}),this.listenTo(i,"clipboardOutput",(n,i)=>{i.content.isEmpty||(i.dataTransfer.setData("text/html",this._htmlDataProcessor.toData(i.content)),i.dataTransfer.setData("text/plain",function t(e){let n="";if(e.is("text")||e.is("textProxy"))n=e.data;else if(e.is("img")&&e.hasAttribute("alt"))n=e.getAttribute("alt");else{let i=null;for(const o of e.getChildren()){const e=t(o);i&&(i.is("containerElement")||o.is("containerElement"))&&(ad.includes(i.name)||ad.includes(o.name)?n+="\n":n+="\n\n"),n+=e,i=o}}return n}(i.content))),"cut"==i.method&&t.model.deleteContent(e.selection)},{priority:"low"})}}class ld{constructor(t){this.editor=t,this.set("value",void 0),this.set("isEnabled",!1),this._disableStack=new Set,this.decorate("execute"),this.listenTo(this.editor.model.document,"change",()=>{this.refresh()}),this.on("execute",t=>{this.isEnabled||t.stop()},{priority:"high"}),this.listenTo(t,"change:isReadOnly",(t,e,n)=>{n?this.forceDisabled("readOnlyMode"):this.clearForceDisabled("readOnlyMode")})}refresh(){this.isEnabled=!0}forceDisabled(t){this._disableStack.add(t),1==this._disableStack.size&&(this.on("set:isEnabled",dd,{priority:"highest"}),this.isEnabled=!1)}clearForceDisabled(t){this._disableStack.delete(t),0==this._disableStack.size&&(this.off("set:isEnabled",dd),this.refresh())}execute(){}destroy(){this.stopListening()}}function dd(t){t.return=!1,t.stop()}function*ud(t,e){for(const n of e)n&&t.getAttributeProperties(n[0]).copyOnEnter&&(yield n)}xn(ld,Ui);class hd extends ld{execute(){const t=this.editor.model,e=t.document;t.change(n=>{!function(t,e,n,i){const o=n.isCollapsed,r=n.getFirstRange(),s=r.start.parent,a=r.end.parent;if(i.isLimit(s)||i.isLimit(a))return void(o||s!=a||t.deleteContent(n));if(o){const t=ud(e.model.schema,n.getAttributes());fd(e,r.start),e.setSelectionAttribute(t)}else{const i=!(r.start.isAtStart&&r.end.isAtEnd),o=s==a;t.deleteContent(n,{leaveUnmerged:i}),i&&(o?fd(e,n.focus):e.setSelection(a,0))}}(this.editor.model,n,e.selection,t.schema),this.fire("afterExecute",{writer:n})})}}function fd(t,e){t.split(e),t.setSelection(e.parent.nextSibling,0)}class md extends ur{constructor(t){super(t);const e=this.document;e.on("keydown",(t,n)=>{if(this.isEnabled&&n.keyCode==go.enter){let i;e.once("enter",t=>i=t,{priority:"highest"}),e.fire("enter",new Ir(e,n.domEvent,{isSoft:n.shiftKey})),i&&i.stop.called&&t.stop()}})}observe(){}}class gd extends Mc{static get pluginName(){return"Enter"}init(){const t=this.editor,e=t.editing.view,n=e.document;e.addObserver(md),t.commands.add("enter",new hd(t)),this.listenTo(n,"enter",(n,i)=>{i.preventDefault(),i.isSoft||(t.execute("enter"),e.scrollToTheSelection())},{priority:"low"})}}class pd extends ld{execute(){const t=this.editor.model,e=t.document;t.change(n=>{!function(t,e,n){const i=n.isCollapsed,o=n.getFirstRange(),r=o.start.parent,s=o.end.parent,a=r==s;if(i){const i=ud(t.schema,n.getAttributes());bd(t,e,o.end),e.removeSelectionAttribute(n.getAttributeKeys()),e.setSelectionAttribute(i)}else{const i=!(o.start.isAtStart&&o.end.isAtEnd);t.deleteContent(n,{leaveUnmerged:i}),a?bd(t,e,n.focus):i&&e.setSelection(s,0)}}(t,n,e.selection),this.fire("afterExecute",{writer:n})})}refresh(){const t=this.editor.model,e=t.document;this.isEnabled=function(t,e){if(e.rangeCount>1)return!1;const n=e.anchor;if(!n||!t.checkChild(n,"softBreak"))return!1;const i=e.getFirstRange(),o=i.start.parent,r=i.end.parent;if((wd(o,t)||wd(r,t))&&o!==r)return!1;return!0}(t.schema,e.selection)}}function bd(t,e,n){const i=e.createElement("softBreak");t.insertContent(i,n),e.setSelection(i,"after")}function wd(t,e){return!t.is("rootElement")&&(e.isLimit(t)||wd(t.parent,e))}class kd extends Mc{static get pluginName(){return"ShiftEnter"}init(){const t=this.editor,e=t.model.schema,n=t.conversion,i=t.editing.view,o=i.document;e.register("softBreak",{allowWhere:"$text",isInline:!0}),n.for("upcast").elementToElement({model:"softBreak",view:"br"}),n.for("downcast").elementToElement({model:"softBreak",view:(t,e)=>e.createEmptyElement("br")}),i.addObserver(md),t.commands.add("shiftEnter",new pd(t)),this.listenTo(o,"enter",(e,n)=>{n.preventDefault(),n.isSoft&&(t.execute("shiftEnter"),i.scrollToTheSelection())},{priority:"low"})}}class _d extends ld{execute(){const t=this.editor.model,e=t.schema.getLimitElement(t.document.selection);t.change(t=>{t.setSelection(e,"in")})}}const vd=bo("Ctrl+A");class yd extends Mc{static get pluginName(){return"SelectAllEditing"}init(){const t=this.editor,e=t.editing.view.document;t.commands.add("selectAll",new _d(t)),this.listenTo(e,"keydown",(e,n)=>{po(n)===vd&&(t.execute("selectAll"),n.preventDefault())})}}class xd extends Mc{static get pluginName(){return"SelectAllUI"}init(){const t=this.editor;t.ui.componentFactory.add("selectAll",e=>{const n=t.commands.get("selectAll"),i=new ul(e),o=e.t;return i.set({label:o("Select all"),icon:'',keystroke:"Ctrl+A",tooltip:!0}),i.bind("isOn","isEnabled").to(n,"value","isEnabled"),this.listenTo(i,"execute",()=>{t.execute("selectAll"),t.editing.view.focus()}),i})}}class Ad extends Mc{static get requires(){return[yd,xd]}static get pluginName(){return"SelectAll"}}class Cd{constructor(t,e=20){this.model=t,this.size=0,this.limit=e,this.isLocked=!1,this._changeCallback=(t,e)=>{"transparent"!=e.type&&e!==this._batch&&this._reset(!0)},this._selectionChangeCallback=()=>{this._reset()},this.model.document.on("change",this._changeCallback),this.model.document.selection.on("change:range",this._selectionChangeCallback),this.model.document.selection.on("change:attribute",this._selectionChangeCallback)}get batch(){return this._batch||(this._batch=this.model.createBatch()),this._batch}input(t){this.size+=t,this.size>=this.limit&&this._reset(!0)}lock(){this.isLocked=!0}unlock(){this.isLocked=!1}destroy(){this.model.document.off("change",this._changeCallback),this.model.document.selection.off("change:range",this._selectionChangeCallback),this.model.document.selection.off("change:attribute",this._selectionChangeCallback)}_reset(t){this.isLocked&&!t||(this._batch=null,this.size=0)}}class Td extends ld{constructor(t,e){super(t),this._buffer=new Cd(t.model,e),this._batches=new WeakSet}get buffer(){return this._buffer}destroy(){super.destroy(),this._buffer.destroy()}execute(t={}){const e=this.editor.model,n=e.document,i=t.text||"",o=i.length,r=t.range?e.createSelection(t.range):n.selection,s=t.resultRange;e.enqueueChange(this._buffer.batch,t=>{this._buffer.lock(),e.deleteContent(r),i&&e.insertContent(t.createText(i,n.selection.getAttributes()),r),s?t.setSelection(s):r.is("documentSelection")||t.setSelection(r),this._buffer.unlock(),this._buffer.input(o),this._batches.add(this._buffer.batch)})}}function Pd(t){let e=null;const n=t.model,i=t.editing.view,o=t.commands.get("input");function r(t){const r=n.document,a=i.document.isComposing,c=e&&e.isEqual(r.selection);e=null,o.isEnabled&&(function(t){if(t.ctrlKey)return!0;return Sd.includes(t.keyCode)}(t)||r.selection.isCollapsed||a&&229===t.keyCode||!a&&229===t.keyCode&&c||s())}function s(){const t=o.buffer;t.lock(),n.enqueueChange(t.batch,()=>{n.deleteContent(n.document.selection)}),t.unlock()}ho.isAndroid?i.document.on("beforeinput",(t,e)=>r(e),{priority:"lowest"}):i.document.on("keydown",(t,e)=>r(e),{priority:"lowest"}),i.document.on("compositionstart",(function(){const t=n.document,e=1!==t.selection.rangeCount||t.selection.getFirstRange().isFlat;if(t.selection.isCollapsed||e)return;s()}),{priority:"lowest"}),i.document.on("compositionend",()=>{e=n.createSelection(n.document.selection)},{priority:"lowest"})}const Sd=[po("arrowUp"),po("arrowRight"),po("arrowDown"),po("arrowLeft"),9,16,17,18,19,20,27,33,34,35,36,45,91,93,144,145,173,174,175,176,177,178,179,255];for(let t=112;t<=135;t++)Sd.push(t);function Md(t){if(t.newChildren.length-t.oldChildren.length!=1)return;const e=function(t,e){const n=[];let i,o=0;return t.forEach(t=>{"equal"==t?(r(),o++):"insert"==t?(s("insert")?i.values.push(e[o]):(r(),i={type:"insert",index:o,values:[e[o]]}),o++):s("delete")?i.howMany++:(r(),i={type:"delete",index:o,howMany:1})}),r(),n;function r(){i&&(n.push(i),i=null)}function s(t){return i&&i.type==t}}(qo(t.oldChildren,t.newChildren,Ed),t.newChildren);if(e.length>1)return;const n=e[0];return n.values[0]&&n.values[0].is("text")?n:void 0}function Ed(t,e){return t&&t.is("text")&&e&&e.is("text")?t.data===e.data:t===e}class Id{constructor(t){this.editor=t,this.editing=this.editor.editing}handle(t,e){if(function(t){if(0==t.length)return!1;for(const e of t)if("children"===e.type&&!Md(e))return!0;return!1}(t))this._handleContainerChildrenMutations(t,e);else for(const n of t)this._handleTextMutation(n,e),this._handleTextNodeInsertion(n)}_handleContainerChildrenMutations(t,e){const n=function(t){const e=t.map(t=>t.node).reduce((t,e)=>t.getCommonAncestor(e,{includeSelf:!0}));if(!e)return;return e.getAncestors({includeSelf:!0,parentFirst:!0}).find(t=>t.is("containerElement")||t.is("rootElement"))}(t);if(!n)return;const i=this.editor.editing.view.domConverter.mapViewToDom(n),o=new ir(this.editor.editing.view.document),r=this.editor.data.toModel(o.domToView(i)).getChild(0),s=this.editor.editing.mapper.toModelElement(n);if(!s)return;const a=Array.from(r.getChildren()),c=Array.from(s.getChildren()),l=a[a.length-1],d=c[c.length-1];l&&l.is("softBreak")&&d&&!d.is("softBreak")&&a.pop();const u=this.editor.model.schema;if(!Nd(a,u)||!Nd(c,u))return;const h=a.map(t=>t.is("text")?t.data:"@").join("").replace(/\u00A0/g," "),f=c.map(t=>t.is("text")?t.data:"@").join("").replace(/\u00A0/g," ");if(f===h)return;const m=qo(f,h),{firstChangeAt:g,insertions:p,deletions:b}=Od(m);let w=null;e&&(w=this.editing.mapper.toModelRange(e.getFirstRange()));const k=h.substr(g,p),_=this.editor.model.createRange(this.editor.model.createPositionAt(s,g),this.editor.model.createPositionAt(s,g+b));this.editor.execute("input",{text:k,range:_,resultRange:w})}_handleTextMutation(t,e){if("text"!=t.type)return;const n=t.newText.replace(/\u00A0/g," "),i=t.oldText.replace(/\u00A0/g," ");if(i===n)return;const o=qo(i,n),{firstChangeAt:r,insertions:s,deletions:a}=Od(o);let c=null;e&&(c=this.editing.mapper.toModelRange(e.getFirstRange()));const l=this.editing.view.createPositionAt(t.node,r),d=this.editing.mapper.toModelPosition(l),u=this.editor.model.createRange(d,d.getShiftedBy(a)),h=n.substr(r,s);this.editor.execute("input",{text:h,range:u,resultRange:c})}_handleTextNodeInsertion(t){if("children"!=t.type)return;const e=Md(t),n=this.editing.view.createPositionAt(t.node,e.index),i=this.editing.mapper.toModelPosition(n),o=e.values[0].data;this.editor.execute("input",{text:o.replace(/\u00A0/g," "),range:this.editor.model.createRange(i)})}}function Nd(t,e){return t.every(t=>e.isInline(t))}function Od(t){let e=null,n=null;for(let i=0;i{new Id(t).handle(n,i)})}(t)}isInput(t){return this.editor.commands.get("input")._batches.has(t)}}class Dd extends ld{constructor(t,e){super(t),this.direction=e,this._buffer=new Cd(t.model,t.config.get("typing.undoStep"))}get buffer(){return this._buffer}execute(t={}){const e=this.editor.model,n=e.document;e.enqueueChange(this._buffer.batch,i=>{this._buffer.lock();const o=i.createSelection(t.selection||n.selection),r=o.isCollapsed;if(o.isCollapsed&&e.modifySelection(o,{direction:this.direction,unit:t.unit}),this._shouldEntireContentBeReplacedWithParagraph(t.sequence||1))return void this._replaceEntireContentWithParagraph(i);if(o.isCollapsed)return;let s=0;o.getFirstRange().getMinimalFlatRanges().forEach(t=>{s+=eo(t.getWalker({singleCharacters:!0,ignoreElementEnd:!0,shallow:!0}))}),e.deleteContent(o,{doNotResetEntireContent:r,direction:this.direction}),this._buffer.input(s),i.setSelection(o),this._buffer.unlock()})}_shouldEntireContentBeReplacedWithParagraph(t){if(t>1)return!1;const e=this.editor.model,n=e.document.selection,i=e.schema.getLimitElement(n);if(!(n.isCollapsed&&n.containsEntireContent(i)))return!1;if(!e.schema.checkChild(i,"paragraph"))return!1;const o=i.getChild(0);return!o||"paragraph"!==o.name}_replaceEntireContentWithParagraph(t){const e=this.editor.model,n=e.document.selection,i=e.schema.getLimitElement(n),o=t.createElement("paragraph");t.remove(t.createRangeIn(i)),t.insert(o,i),t.setSelection(o,0)}}class Ld extends ur{constructor(t){super(t);const e=t.document;let n=0;function i(t,n,i){let o;e.once("delete",t=>o=t,{priority:Number.POSITIVE_INFINITY}),e.fire("delete",new Ir(e,n,i)),o&&o.stop.called&&t.stop()}e.on("keyup",(t,e)=>{e.keyCode!=go.delete&&e.keyCode!=go.backspace||(n=0)}),e.on("keydown",(t,e)=>{const o={};if(e.keyCode==go.delete)o.direction="forward",o.unit="character";else{if(e.keyCode!=go.backspace)return;o.direction="backward",o.unit="codePoint"}const r=ho.isMac?e.altKey:e.ctrlKey;o.unit=r?"word":o.unit,o.sequence=++n,i(t,e.domEvent,o)}),ho.isAndroid&&e.on("beforeinput",(e,n)=>{if("deleteContentBackward"!=n.domEvent.inputType)return;const o={unit:"codepoint",direction:"backward",sequence:1},r=n.domTarget.ownerDocument.defaultView.getSelection();r.anchorNode==r.focusNode&&r.anchorOffset+1!=r.focusOffset&&(o.selectionToRemove=t.domConverter.domSelectionToView(r)),i(e,n.domEvent,o)})}observe(){}}class jd extends Mc{static get pluginName(){return"Delete"}init(){const t=this.editor,e=t.editing.view,n=e.document;if(e.addObserver(Ld),t.commands.add("forwardDelete",new Dd(t,"forward")),t.commands.add("delete",new Dd(t,"backward")),this.listenTo(n,"delete",(n,i)=>{const o={unit:i.unit,sequence:i.sequence};if(i.selectionToRemove){const e=t.model.createSelection(),n=[];for(const e of i.selectionToRemove.getRanges())n.push(t.editing.mapper.toModelRange(e));e.setTo(n),o.selection=e}t.execute("forward"==i.direction?"forwardDelete":"delete",o),i.preventDefault(),e.scrollToTheSelection()}),ho.isAndroid){let t=null;this.listenTo(n,"delete",(e,n)=>{const i=n.domTarget.ownerDocument.defaultView.getSelection();t={anchorNode:i.anchorNode,anchorOffset:i.anchorOffset,focusNode:i.focusNode,focusOffset:i.focusOffset}},{priority:"lowest"}),this.listenTo(n,"keyup",(e,n)=>{if(t){const e=n.domTarget.ownerDocument.defaultView.getSelection();e.collapse(t.anchorNode,t.anchorOffset),e.extend(t.focusNode,t.focusOffset),t=null}})}}}class Vd extends Mc{static get requires(){return[Rd,jd]}static get pluginName(){return"Typing"}}const zd=new Map;function Bd(t,e,n){let i=zd.get(t);i||(i=new Map,zd.set(t,i)),i.set(e,n)}function Fd(t){return[t]}function Ud(t,e,n={}){const i=function(t,e){const n=zd.get(t);return n&&n.has(e)?n.get(e):Fd}(t.constructor,e.constructor);try{return i(t=t.clone(),e,n)}catch(t){throw t}}function Hd(t,e,n){t=t.slice(),e=e.slice();const i=new Wd(n.document,n.useRelations,n.forceWeakRemove);i.setOriginalOperations(t),i.setOriginalOperations(e);const o=i.originalOperations;if(0==t.length||0==e.length)return{operationsA:t,operationsB:e,originalOperations:o};const r=new WeakMap;for(const e of t)r.set(e,0);const s={nextBaseVersionA:t[t.length-1].baseVersion+1,nextBaseVersionB:e[e.length-1].baseVersion+1,originalOperationsACount:t.length,originalOperationsBCount:e.length};let a=0;for(;a{if(t.key===e.key&&t.range.start.hasSameParentAs(e.range.start)){const i=t.range.getDifference(e.range).map(e=>new Na(e,t.key,t.oldValue,t.newValue,0)),o=t.range.getIntersection(e.range);return o&&n.aIsStrong&&i.push(new Na(o,e.key,e.newValue,t.newValue,0)),0==i.length?[new rc(0)]:i}return[t]}),Bd(Na,Da,(t,e)=>{if(t.range.start.hasSameParentAs(e.position)&&t.range.containsPosition(e.position)){const n=t.range._getTransformedByInsertion(e.position,e.howMany,!e.shouldReceiveAttributes).map(e=>new Na(e,t.key,t.oldValue,t.newValue,t.baseVersion));if(e.shouldReceiveAttributes){const i=Gd(e,t.key,t.oldValue);i&&n.unshift(i)}return n}return t.range=t.range._getTransformedByInsertion(e.position,e.howMany,!1)[0],[t]}),Bd(Na,za,(t,e)=>{const n=[];t.range.start.hasSameParentAs(e.deletionPosition)&&(t.range.containsPosition(e.deletionPosition)||t.range.start.isEqual(e.deletionPosition))&&n.push(xs._createFromPositionAndShift(e.graveyardPosition,1));const i=t.range._getTransformedByMergeOperation(e);return i.isCollapsed||n.push(i),n.map(e=>new Na(e,t.key,t.oldValue,t.newValue,t.baseVersion))}),Bd(Na,Ra,(t,e)=>function(t,e){const n=xs._createFromPositionAndShift(e.sourcePosition,e.howMany);let i=null,o=[];n.containsRange(t,!0)?i=t:t.start.hasSameParentAs(n.start)?(o=t.getDifference(n),i=t.getIntersection(n)):o=[t];const r=[];for(let t of o){t=t._getTransformedByDeletion(e.sourcePosition,e.howMany);const n=e.getMovedRangeStart(),i=t.start.hasSameParentAs(n);t=t._getTransformedByInsertion(n,e.howMany,i),r.push(...t)}i&&r.push(i._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany,!1)[0]);return r}(t.range,e).map(e=>new Na(e,t.key,t.oldValue,t.newValue,t.baseVersion))),Bd(Na,Ba,(t,e)=>{if(t.range.end.isEqual(e.insertionPosition))return e.graveyardPosition||t.range.end.offset++,[t];if(t.range.start.hasSameParentAs(e.splitPosition)&&t.range.containsPosition(e.splitPosition)){const n=t.clone();return n.range=new xs(e.moveTargetPosition.clone(),t.range.end._getCombined(e.splitPosition,e.moveTargetPosition)),t.range.end=e.splitPosition.clone(),t.range.end.stickiness="toPrevious",[t,n]}return t.range=t.range._getTransformedBySplitOperation(e),[t]}),Bd(Da,Na,(t,e)=>{const n=[t];if(t.shouldReceiveAttributes&&t.position.hasSameParentAs(e.range.start)&&e.range.containsPosition(t.position)){const i=Gd(t,e.key,e.newValue);i&&n.push(i)}return n}),Bd(Da,Da,(t,e,n)=>(t.position.isEqual(e.position)&&n.aIsStrong||(t.position=t.position._getTransformedByInsertOperation(e)),[t])),Bd(Da,Ra,(t,e)=>(t.position=t.position._getTransformedByMoveOperation(e),[t])),Bd(Da,Ba,(t,e)=>(t.position=t.position._getTransformedBySplitOperation(e),[t])),Bd(Da,za,(t,e)=>(t.position=t.position._getTransformedByMergeOperation(e),[t])),Bd(La,Da,(t,e)=>(t.oldRange&&(t.oldRange=t.oldRange._getTransformedByInsertOperation(e)[0]),t.newRange&&(t.newRange=t.newRange._getTransformedByInsertOperation(e)[0]),[t])),Bd(La,La,(t,e,n)=>{if(t.name==e.name){if(!n.aIsStrong)return[new rc(0)];t.oldRange=e.newRange?e.newRange.clone():null}return[t]}),Bd(La,za,(t,e)=>(t.oldRange&&(t.oldRange=t.oldRange._getTransformedByMergeOperation(e)),t.newRange&&(t.newRange=t.newRange._getTransformedByMergeOperation(e)),[t])),Bd(La,Ra,(t,e,n)=>{if(t.oldRange&&(t.oldRange=xs._createFromRanges(t.oldRange._getTransformedByMoveOperation(e))),t.newRange){if(n.abRelation){const i=xs._createFromRanges(t.newRange._getTransformedByMoveOperation(e));if("left"==n.abRelation.side&&e.targetPosition.isEqual(t.newRange.start))return t.newRange.start.path=n.abRelation.path,t.newRange.end=i.end,[t];if("right"==n.abRelation.side&&e.targetPosition.isEqual(t.newRange.end))return t.newRange.start=i.start,t.newRange.end.path=n.abRelation.path,[t]}t.newRange=xs._createFromRanges(t.newRange._getTransformedByMoveOperation(e))}return[t]}),Bd(La,Ba,(t,e,n)=>{if(t.oldRange&&(t.oldRange=t.oldRange._getTransformedBySplitOperation(e)),t.newRange){if(n.abRelation){const i=t.newRange._getTransformedBySplitOperation(e);return t.newRange.start.isEqual(e.splitPosition)&&n.abRelation.wasStartBeforeMergedElement?t.newRange.start=ks._createAt(e.insertionPosition):t.newRange.start.isEqual(e.splitPosition)&&!n.abRelation.wasInLeftElement&&(t.newRange.start=ks._createAt(e.moveTargetPosition)),t.newRange.end.isEqual(e.splitPosition)&&n.abRelation.wasInRightElement?t.newRange.end=ks._createAt(e.moveTargetPosition):t.newRange.end.isEqual(e.splitPosition)&&n.abRelation.wasEndBeforeMergedElement?t.newRange.end=ks._createAt(e.insertionPosition):t.newRange.end=i.end,[t]}t.newRange=t.newRange._getTransformedBySplitOperation(e)}return[t]}),Bd(za,Da,(t,e)=>(t.sourcePosition.hasSameParentAs(e.position)&&(t.howMany+=e.howMany),t.sourcePosition=t.sourcePosition._getTransformedByInsertOperation(e),t.targetPosition=t.targetPosition._getTransformedByInsertOperation(e),[t])),Bd(za,za,(t,e,n)=>{if(t.sourcePosition.isEqual(e.sourcePosition)&&t.targetPosition.isEqual(e.targetPosition)){if(n.bWasUndone){const n=e.graveyardPosition.path.slice();return n.push(0),t.sourcePosition=new ks(e.graveyardPosition.root,n),t.howMany=0,[t]}return[new rc(0)]}if(t.sourcePosition.isEqual(e.sourcePosition)&&!t.targetPosition.isEqual(e.targetPosition)&&!n.bWasUndone&&"splitAtSource"!=n.abRelation){const i="$graveyard"==t.targetPosition.root.rootName,o="$graveyard"==e.targetPosition.root.rootName,r=i&&!o;if(o&&!i||!r&&n.aIsStrong){const n=e.targetPosition._getTransformedByMergeOperation(e),i=t.targetPosition._getTransformedByMergeOperation(e);return[new Ra(n,t.howMany,i,0)]}return[new rc(0)]}return t.sourcePosition.hasSameParentAs(e.targetPosition)&&(t.howMany+=e.howMany),t.sourcePosition=t.sourcePosition._getTransformedByMergeOperation(e),t.targetPosition=t.targetPosition._getTransformedByMergeOperation(e),t.graveyardPosition.isEqual(e.graveyardPosition)&&n.aIsStrong||(t.graveyardPosition=t.graveyardPosition._getTransformedByMergeOperation(e)),[t]}),Bd(za,Ra,(t,e,n)=>{const i=xs._createFromPositionAndShift(e.sourcePosition,e.howMany);return"remove"==e.type&&!n.bWasUndone&&!n.forceWeakRemove&&t.deletionPosition.hasSameParentAs(e.sourcePosition)&&i.containsPosition(t.sourcePosition)?[new rc(0)]:(t.sourcePosition.hasSameParentAs(e.targetPosition)&&(t.howMany+=e.howMany),t.sourcePosition.hasSameParentAs(e.sourcePosition)&&(t.howMany-=e.howMany),t.sourcePosition=t.sourcePosition._getTransformedByMoveOperation(e),t.targetPosition=t.targetPosition._getTransformedByMoveOperation(e),t.graveyardPosition.isEqual(e.targetPosition)||(t.graveyardPosition=t.graveyardPosition._getTransformedByMoveOperation(e)),[t])}),Bd(za,Ba,(t,e,n)=>{if(e.graveyardPosition&&(t.graveyardPosition=t.graveyardPosition._getTransformedByDeletion(e.graveyardPosition,1),t.deletionPosition.isEqual(e.graveyardPosition)&&(t.howMany=e.howMany)),t.targetPosition.isEqual(e.splitPosition)){const i=0!=e.howMany,o=e.graveyardPosition&&t.deletionPosition.isEqual(e.graveyardPosition);if(i||o||"mergeTargetNotMoved"==n.abRelation)return t.sourcePosition=t.sourcePosition._getTransformedBySplitOperation(e),[t]}if(t.sourcePosition.isEqual(e.splitPosition)){if("mergeSourceNotMoved"==n.abRelation)return t.howMany=0,t.targetPosition=t.targetPosition._getTransformedBySplitOperation(e),[t];if("mergeSameElement"==n.abRelation||t.sourcePosition.offset>0)return t.sourcePosition=e.moveTargetPosition.clone(),t.targetPosition=t.targetPosition._getTransformedBySplitOperation(e),[t]}return t.sourcePosition.hasSameParentAs(e.splitPosition)&&(t.howMany=e.splitPosition.offset),t.sourcePosition=t.sourcePosition._getTransformedBySplitOperation(e),t.targetPosition=t.targetPosition._getTransformedBySplitOperation(e),[t]}),Bd(Ra,Da,(t,e)=>{const n=xs._createFromPositionAndShift(t.sourcePosition,t.howMany)._getTransformedByInsertOperation(e,!1)[0];return t.sourcePosition=n.start,t.howMany=n.end.offset-n.start.offset,t.targetPosition.isEqual(e.position)||(t.targetPosition=t.targetPosition._getTransformedByInsertOperation(e)),[t]}),Bd(Ra,Ra,(t,e,n)=>{const i=xs._createFromPositionAndShift(t.sourcePosition,t.howMany),o=xs._createFromPositionAndShift(e.sourcePosition,e.howMany);let r,s=n.aIsStrong,a=!n.aIsStrong;if("insertBefore"==n.abRelation||"insertAfter"==n.baRelation?a=!0:"insertAfter"!=n.abRelation&&"insertBefore"!=n.baRelation||(a=!1),r=t.targetPosition.isEqual(e.targetPosition)&&a?t.targetPosition._getTransformedByDeletion(e.sourcePosition,e.howMany):t.targetPosition._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),$d(t,e)&&$d(e,t))return[e.getReversed()];if(i.containsPosition(e.targetPosition)&&i.containsRange(o,!0))return i.start=i.start._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),i.end=i.end._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),Qd([i],r);if(o.containsPosition(t.targetPosition)&&o.containsRange(i,!0))return i.start=i.start._getCombined(e.sourcePosition,e.getMovedRangeStart()),i.end=i.end._getCombined(e.sourcePosition,e.getMovedRangeStart()),Qd([i],r);const c=In(t.sourcePosition.getParentPath(),e.sourcePosition.getParentPath());if("prefix"==c||"extension"==c)return i.start=i.start._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),i.end=i.end._getTransformedByMove(e.sourcePosition,e.targetPosition,e.howMany),Qd([i],r);"remove"!=t.type||"remove"==e.type||n.aWasUndone||n.forceWeakRemove?"remove"==t.type||"remove"!=e.type||n.bWasUndone||n.forceWeakRemove||(s=!1):s=!0;const l=[],d=i.getDifference(o);for(const t of d){t.start=t.start._getTransformedByDeletion(e.sourcePosition,e.howMany),t.end=t.end._getTransformedByDeletion(e.sourcePosition,e.howMany);const n="same"==In(t.start.getParentPath(),e.getMovedRangeStart().getParentPath()),i=t._getTransformedByInsertion(e.getMovedRangeStart(),e.howMany,n);l.push(...i)}const u=i.getIntersection(o);return null!==u&&s&&(u.start=u.start._getCombined(e.sourcePosition,e.getMovedRangeStart()),u.end=u.end._getCombined(e.sourcePosition,e.getMovedRangeStart()),0===l.length?l.push(u):1==l.length?o.start.isBefore(i.start)||o.start.isEqual(i.start)?l.unshift(u):l.push(u):l.splice(1,0,u)),0===l.length?[new rc(t.baseVersion)]:Qd(l,r)}),Bd(Ra,Ba,(t,e,n)=>{let i=t.targetPosition.clone();t.targetPosition.isEqual(e.insertionPosition)&&e.graveyardPosition&&"moveTargetAfter"!=n.abRelation||(i=t.targetPosition._getTransformedBySplitOperation(e));const o=xs._createFromPositionAndShift(t.sourcePosition,t.howMany);if(o.end.isEqual(e.insertionPosition))return e.graveyardPosition||t.howMany++,t.targetPosition=i,[t];if(o.start.hasSameParentAs(e.splitPosition)&&o.containsPosition(e.splitPosition)){let t=new xs(e.splitPosition,o.end);return t=t._getTransformedBySplitOperation(e),Qd([new xs(o.start,e.splitPosition),t],i)}t.targetPosition.isEqual(e.splitPosition)&&"insertAtSource"==n.abRelation&&(i=e.moveTargetPosition),t.targetPosition.isEqual(e.insertionPosition)&&"insertBetween"==n.abRelation&&(i=t.targetPosition);const r=[o._getTransformedBySplitOperation(e)];if(e.graveyardPosition){const i=o.start.isEqual(e.graveyardPosition)||o.containsPosition(e.graveyardPosition);t.howMany>1&&i&&!n.aWasUndone&&r.push(xs._createFromPositionAndShift(e.insertionPosition,1))}return Qd(r,i)}),Bd(Ra,za,(t,e,n)=>{const i=xs._createFromPositionAndShift(t.sourcePosition,t.howMany);if(e.deletionPosition.hasSameParentAs(t.sourcePosition)&&i.containsPosition(e.sourcePosition))if("remove"!=t.type||n.forceWeakRemove){if(1==t.howMany)return n.bWasUndone?(t.sourcePosition=e.graveyardPosition.clone(),t.targetPosition=t.targetPosition._getTransformedByMergeOperation(e),[t]):[new rc(0)]}else if(!n.aWasUndone){const n=[];let i=e.graveyardPosition.clone(),o=e.targetPosition._getTransformedByMergeOperation(e);t.howMany>1&&(n.push(new Ra(t.sourcePosition,t.howMany-1,t.targetPosition,0)),i=i._getTransformedByMove(t.sourcePosition,t.targetPosition,t.howMany-1),o=o._getTransformedByMove(t.sourcePosition,t.targetPosition,t.howMany-1));const r=e.deletionPosition._getCombined(t.sourcePosition,t.targetPosition),s=new Ra(i,1,r,0),a=s.getMovedRangeStart().path.slice();a.push(0);const c=new ks(s.targetPosition.root,a);o=o._getTransformedByMove(i,r,1);const l=new Ra(o,e.howMany,c,0);return n.push(s),n.push(l),n}const o=xs._createFromPositionAndShift(t.sourcePosition,t.howMany)._getTransformedByMergeOperation(e);return t.sourcePosition=o.start,t.howMany=o.end.offset-o.start.offset,t.targetPosition=t.targetPosition._getTransformedByMergeOperation(e),[t]}),Bd(ja,Da,(t,e)=>(t.position=t.position._getTransformedByInsertOperation(e),[t])),Bd(ja,za,(t,e)=>t.position.isEqual(e.deletionPosition)?(t.position=e.graveyardPosition.clone(),t.position.stickiness="toNext",[t]):(t.position=t.position._getTransformedByMergeOperation(e),[t])),Bd(ja,Ra,(t,e)=>(t.position=t.position._getTransformedByMoveOperation(e),[t])),Bd(ja,ja,(t,e,n)=>{if(t.position.isEqual(e.position)){if(!n.aIsStrong)return[new rc(0)];t.oldName=e.newName}return[t]}),Bd(ja,Ba,(t,e)=>{if("same"==In(t.position.path,e.splitPosition.getParentPath())&&!e.graveyardPosition){const e=new ja(t.position.getShiftedBy(1),t.oldName,t.newName,0);return[t,e]}return t.position=t.position._getTransformedBySplitOperation(e),[t]}),Bd(Va,Va,(t,e,n)=>{if(t.root===e.root&&t.key===e.key){if(!n.aIsStrong||t.newValue===e.newValue)return[new rc(0)];t.oldValue=e.newValue}return[t]}),Bd(Ba,Da,(t,e)=>(t.splitPosition.hasSameParentAs(e.position)&&t.splitPosition.offset{if(!t.graveyardPosition&&!n.bWasUndone&&t.splitPosition.hasSameParentAs(e.sourcePosition)){const n=e.graveyardPosition.path.slice();n.push(0);const i=new ks(e.graveyardPosition.root,n),o=Ba.getInsertionPosition(new ks(e.graveyardPosition.root,n)),r=new Ba(i,0,null,0);return r.insertionPosition=o,t.splitPosition=t.splitPosition._getTransformedByMergeOperation(e),t.insertionPosition=Ba.getInsertionPosition(t.splitPosition),t.graveyardPosition=r.insertionPosition.clone(),t.graveyardPosition.stickiness="toNext",[r,t]}return t.splitPosition.hasSameParentAs(e.deletionPosition)&&!t.splitPosition.isAfter(e.deletionPosition)&&t.howMany--,t.splitPosition.hasSameParentAs(e.targetPosition)&&(t.howMany+=e.howMany),t.splitPosition=t.splitPosition._getTransformedByMergeOperation(e),t.insertionPosition=Ba.getInsertionPosition(t.splitPosition),t.graveyardPosition&&(t.graveyardPosition=t.graveyardPosition._getTransformedByMergeOperation(e)),[t]}),Bd(Ba,Ra,(t,e,n)=>{const i=xs._createFromPositionAndShift(e.sourcePosition,e.howMany);if(t.graveyardPosition){const o=i.start.isEqual(t.graveyardPosition)||i.containsPosition(t.graveyardPosition);if(!n.bWasUndone&&o){const n=t.splitPosition._getTransformedByMoveOperation(e),i=t.graveyardPosition._getTransformedByMoveOperation(e),o=i.path.slice();o.push(0);const r=new ks(i.root,o);return[new Ra(n,t.howMany,r,0)]}t.graveyardPosition=t.graveyardPosition._getTransformedByMoveOperation(e)}if(t.splitPosition.hasSameParentAs(e.sourcePosition)&&i.containsPosition(t.splitPosition)){const n=e.howMany-(t.splitPosition.offset-e.sourcePosition.offset);return t.howMany-=n,t.splitPosition.hasSameParentAs(e.targetPosition)&&t.splitPosition.offset{if(t.splitPosition.isEqual(e.splitPosition)){if(!t.graveyardPosition&&!e.graveyardPosition)return[new rc(0)];if(t.graveyardPosition&&e.graveyardPosition&&t.graveyardPosition.isEqual(e.graveyardPosition))return[new rc(0)];if("splitBefore"==n.abRelation)return t.howMany=0,t.graveyardPosition=t.graveyardPosition._getTransformedBySplitOperation(e),[t]}if(t.graveyardPosition&&e.graveyardPosition&&t.graveyardPosition.isEqual(e.graveyardPosition)){const i="$graveyard"==t.splitPosition.root.rootName,o="$graveyard"==e.splitPosition.root.rootName,r=i&&!o;if(o&&!i||!r&&n.aIsStrong){const n=[];return e.howMany&&n.push(new Ra(e.moveTargetPosition,e.howMany,e.splitPosition,0)),t.howMany&&n.push(new Ra(t.splitPosition,t.howMany,t.moveTargetPosition,0)),n}return[new rc(0)]}if(t.graveyardPosition&&(t.graveyardPosition=t.graveyardPosition._getTransformedBySplitOperation(e)),t.splitPosition.isEqual(e.insertionPosition)&&"splitBefore"==n.abRelation)return t.howMany++,[t];if(e.splitPosition.isEqual(t.insertionPosition)&&"splitBefore"==n.baRelation){const n=e.insertionPosition.path.slice();n.push(0);const i=new ks(e.insertionPosition.root,n);return[t,new Ra(t.insertionPosition,1,i,0)]}return t.splitPosition.hasSameParentAs(e.splitPosition)&&t.splitPosition.offset0}addBatch(t){const e=this.editor.model.document.selection,n={ranges:e.hasOwnRange?Array.from(e.getRanges()):[],isBackward:e.isBackward};this._stack.push({batch:t,selection:n}),this.refresh()}clearStack(){this._stack=[],this.refresh()}_restoreSelection(t,e,n){const i=this.editor.model,o=i.document,r=[];for(const e of t){const t=Jd(e,n).find(t=>t.start.root!=o.graveyard);t&&r.push(t)}r.length&&i.change(t=>{t.setSelection(r,{backward:e})})}_undo(t,e){const n=this.editor.model,i=n.document;this._createdBatches.add(e);const o=t.operations.slice().filter(t=>t.isDocumentOperation);o.reverse();for(const t of o){const o=t.baseVersion+1,r=Array.from(i.history.getOperations(o)),s=Hd([t.getReversed()],r,{useRelations:!0,document:this.editor.model.document,padWithNoOps:!1,forceWeakRemove:!0}).operationsA;for(const o of s)e.addOperation(o),n.applyOperation(o),i.history.setOperationAsUndone(t,o)}}}function Jd(t,e){const n=t.getTransformedByOperations(e);n.sort((t,e)=>t.start.isBefore(e.start)?-1:1);for(let t=1;te.batch==t):this._stack.length-1,n=this._stack.splice(e,1)[0],i=this.editor.model.createBatch("transparent");this.editor.model.enqueueChange(i,()=>{this._undo(n.batch,i);const t=this.editor.model.document.history.getOperations(n.batch.baseVersion);this._restoreSelection(n.selection.ranges,n.selection.isBackward,t),this.fire("revert",n.batch,i)}),this.refresh()}}class Xd extends Kd{execute(){const t=this._stack.pop(),e=this.editor.model.createBatch("transparent");this.editor.model.enqueueChange(e,()=>{const n=t.batch.operations[t.batch.operations.length-1].baseVersion+1,i=this.editor.model.document.history.getOperations(n);this._restoreSelection(t.selection.ranges,t.selection.isBackward,i),this._undo(t.batch,e)}),this.refresh()}}class tu extends Mc{static get pluginName(){return"UndoEditing"}constructor(t){super(t),this._batchRegistry=new WeakSet}init(){const t=this.editor;this._undoCommand=new Zd(t),this._redoCommand=new Xd(t),t.commands.add("undo",this._undoCommand),t.commands.add("redo",this._redoCommand),this.listenTo(t.model,"applyOperation",(t,e)=>{const n=e[0];if(!n.isDocumentOperation)return;const i=n.batch,o=this._redoCommand._createdBatches.has(i),r=this._undoCommand._createdBatches.has(i);this._batchRegistry.has(i)||"transparent"==i.type&&!o&&!r||(o?this._undoCommand.addBatch(i):r||(this._undoCommand.addBatch(i),this._redoCommand.clearStack()),this._batchRegistry.add(i))},{priority:"highest"}),this.listenTo(this._undoCommand,"revert",(t,e,n)=>{this._redoCommand.addBatch(n)}),t.keystrokes.set("CTRL+Z","undo"),t.keystrokes.set("CTRL+Y","redo"),t.keystrokes.set("CTRL+SHIFT+Z","redo")}}var eu='',nu='';class iu extends Mc{init(){const t=this.editor,e=t.locale,n=t.t,i="ltr"==e.uiLanguageDirection?eu:nu,o="ltr"==e.uiLanguageDirection?nu:eu;this._addButton("undo",n("Undo"),"CTRL+Z",i),this._addButton("redo",n("Redo"),"CTRL+Y",o)}_addButton(t,e,n,i){const o=this.editor;o.ui.componentFactory.add(t,r=>{const s=o.commands.get(t),a=new ul(r);return a.set({label:e,icon:i,keystroke:n,tooltip:!0}),a.bind("isEnabled").to(s,"isEnabled"),this.listenTo(a,"execute",()=>{o.execute(t),o.editing.view.focus()}),a})}}class ou extends Mc{static get requires(){return[tu,iu]}static get pluginName(){return"Undo"}}class ru{constructor(t){this.context=t}destroy(){this.stopListening()}static get isContextPlugin(){return!0}}xn(ru,Ui);class su extends ru{static get pluginName(){return"PendingActions"}init(){this.set("hasAny",!1),this._actions=new An({idProperty:"_id"}),this._actions.delegate("add","remove").to(this)}add(t){if("string"!=typeof t)throw new hn.b("pendingactions-add-invalid-message: The message must be a string.",this);const e=Object.create(Ui);return e.set("message",t),this._actions.add(e),this.hasAny=!0,e}remove(t){this._actions.remove(t),this.hasAny=!!this._actions.length}get first(){return this._actions.get(0)}[Symbol.iterator](){return this._actions[Symbol.iterator]()}}class au{constructor(){const t=new window.FileReader;this._reader=t,this._data=void 0,this.set("loaded",0),t.onprogress=t=>{this.loaded=t.loaded}}get error(){return this._reader.error}get data(){return this._data}read(t){const e=this._reader;return this.total=t.size,new Promise((n,i)=>{e.onload=()=>{const t=e.result;this._data=t,n(t)},e.onerror=()=>{i("error")},e.onabort=()=>{i("aborted")},this._reader.readAsDataURL(t)})}abort(){this._reader.abort()}}xn(au,Ui);class cu extends Mc{static get pluginName(){return"FileRepository"}static get requires(){return[su]}init(){this.loaders=new An,this.loaders.on("add",()=>this._updatePendingAction()),this.loaders.on("remove",()=>this._updatePendingAction()),this._loadersMap=new Map,this._pendingAction=null,this.set("uploaded",0),this.set("uploadTotal",null),this.bind("uploadedPercent").to(this,"uploaded",this,"uploadTotal",(t,e)=>e?t/e*100:0)}getLoader(t){return this._loadersMap.get(t)||null}createLoader(t){if(!this.createUploadAdapter)return console.warn(Object(hn.a)("filerepository-no-upload-adapter: Upload adapter is not defined.")),null;const e=new lu(Promise.resolve(t),this.createUploadAdapter);return this.loaders.add(e),this._loadersMap.set(t,e),t instanceof Promise&&e.file.then(t=>{this._loadersMap.set(t,e)}).catch(()=>{}),e.on("change:uploaded",()=>{let t=0;for(const e of this.loaders)t+=e.uploaded;this.uploaded=t}),e.on("change:uploadTotal",()=>{let t=0;for(const e of this.loaders)e.uploadTotal&&(t+=e.uploadTotal);this.uploadTotal=t}),e}destroyLoader(t){const e=t instanceof lu?t:this.getLoader(t);e._destroy(),this.loaders.remove(e),this._loadersMap.forEach((t,n)=>{t===e&&this._loadersMap.delete(n)})}_updatePendingAction(){const t=this.editor.plugins.get(su);if(this.loaders.length){if(!this._pendingAction){const e=this.editor.t,n=t=>`${e("Upload in progress")} ${parseInt(t)}%.`;this._pendingAction=t.add(n(this.uploadedPercent)),this._pendingAction.bind("message").to(this,"uploadedPercent",n)}}else t.remove(this._pendingAction),this._pendingAction=null}}xn(cu,Ui);class lu{constructor(t,e){this.id=dn(),this._filePromiseWrapper=this._createFilePromiseWrapper(t),this._adapter=e(this),this._reader=new au,this.set("status","idle"),this.set("uploaded",0),this.set("uploadTotal",null),this.bind("uploadedPercent").to(this,"uploaded",this,"uploadTotal",(t,e)=>e?t/e*100:0),this.set("uploadResponse",null)}get file(){return this._filePromiseWrapper?this._filePromiseWrapper.promise.then(t=>this._filePromiseWrapper?t:null):Promise.resolve(null)}get data(){return this._reader.data}read(){if("idle"!=this.status)throw new hn.b("filerepository-read-wrong-status: You cannot call read if the status is different than idle.",this);return this.status="reading",this.file.then(t=>this._reader.read(t)).then(t=>{if("reading"!==this.status)throw this.status;return this.status="idle",t}).catch(t=>{if("aborted"===t)throw this.status="aborted","aborted";throw this.status="error",this._reader.error?this._reader.error:t})}upload(){if("idle"!=this.status)throw new hn.b("filerepository-upload-wrong-status: You cannot call upload if the status is different than idle.",this);return this.status="uploading",this.file.then(()=>this._adapter.upload()).then(t=>(this.uploadResponse=t,this.status="idle",t)).catch(t=>{if("aborted"===this.status)throw"aborted";throw this.status="error",t})}abort(){const t=this.status;this.status="aborted",this._filePromiseWrapper.isFulfilled?"reading"==t?this._reader.abort():"uploading"==t&&this._adapter.abort&&this._adapter.abort():(this._filePromiseWrapper.promise.catch(()=>{}),this._filePromiseWrapper.rejecter("aborted")),this._destroy()}_destroy(){this._filePromiseWrapper=void 0,this._reader=void 0,this._adapter=void 0,this.uploadResponse=void 0}_createFilePromiseWrapper(t){const e={};return e.promise=new Promise((n,i)=>{e.rejecter=i,e.isFulfilled=!1,t.then(t=>{e.isFulfilled=!0,n(t)}).catch(t=>{e.isFulfilled=!0,i(t)})}),e}}xn(lu,Ui);function du(){let t=function(t){t=t.toLowerCase();const e=document.cookie.split(";");for(const n of e){const e=n.split("=");if(decodeURIComponent(e[0].trim().toLowerCase())===t)return decodeURIComponent(e[1])}return null}("ckCsrfToken");var e,n;return t&&40==t.length||(t=function(t){let e="";const n=new Uint8Array(t);window.crypto.getRandomValues(n);for(let t=0;t.5?i.toUpperCase():i}return e}(40),e="ckCsrfToken",n=t,document.cookie=encodeURIComponent(e)+"="+encodeURIComponent(n)+";path=/"),t}class uu extends Mc{static get requires(){return[cu]}static get pluginName(){return"CKFinderUploadAdapter"}init(){const t=this.editor.config.get("ckfinder.uploadUrl");t&&(this.editor.plugins.get(cu).createUploadAdapter=e=>new hu(e,t,this.editor.t))}}class hu{constructor(t,e,n){this.loader=t,this.url=e,this.t=n}upload(){return this.loader.file.then(t=>new Promise((e,n)=>{this._initRequest(),this._initListeners(e,n,t),this._sendRequest(t)}))}abort(){this.xhr&&this.xhr.abort()}_initRequest(){const t=this.xhr=new XMLHttpRequest;t.open("POST",this.url,!0),t.responseType="json"}_initListeners(t,e,n){const i=this.xhr,o=this.loader,r=(0,this.t)("Cannot upload file:")+` ${n.name}.`;i.addEventListener("error",()=>e(r)),i.addEventListener("abort",()=>e()),i.addEventListener("load",()=>{const n=i.response;if(!n||!n.uploaded)return e(n&&n.error&&n.error.message?n.error.message:r);t({default:n.url})}),i.upload&&i.upload.addEventListener("progress",t=>{t.lengthComputable&&(o.uploadTotal=t.total,o.uploaded=t.loaded)})}_sendRequest(t){const e=new FormData;e.append("upload",t),e.append("ckCsrfToken",du()),this.xhr.send(e)}}class fu{static get pluginName(){return"BlockAutoformatEditing"}constructor(t,e,n){let i,o=null;"function"==typeof n?i=n:(o=t.commands.get(n),i=()=>{t.execute(n)}),t.model.document.on("change",(n,r)=>{if(o&&!o.isEnabled)return;if("transparent"==r.type)return;const s=Array.from(t.model.document.differ.getChanges()),a=s[0];if(1!=s.length||"insert"!==a.type||"$text"!=a.name||1!=a.length)return;const c=a.position.parent;if(!c.is("paragraph")||1!==c.childCount)return;const l=e.exec(c.getChild(0).data);l&&t.model.enqueueChange(t=>{const e=t.createPositionAt(c,0),n=t.createPositionAt(c,l[0].length),o=new Rs(e,n);!1!==i({match:l})&&t.remove(o),o.detach()})})}}function mu(t,e){let n=t.start;return{text:Array.from(t.getItems()).reduce((t,i)=>i.is("text")||i.is("textProxy")?t+i.data:(n=e.createPositionAfter(i),""),""),range:e.createRange(n,t.end)}}class gu{static get pluginName(){return"InlineAutoformatEditing"}constructor(t,e,n){let i,o,r,s;e instanceof RegExp?i=e:r=e,"string"==typeof n?o=n:s=n,r=r||(t=>{let e;const n=[],o=[];for(;null!==(e=i.exec(t))&&!(e&&e.length<4);){let{index:t,1:i,2:r,3:s}=e;const a=i+r+s;t+=e[0].length-a.length;const c=[t,t+i.length],l=[t+i.length+r.length,t+i.length+r.length+s.length];n.push(c),n.push(l),o.push([t+i.length,t+i.length+r.length])}return{remove:n,format:o}}),s=s||((e,n)=>{const i=t.model.schema.getValidRanges(n,o);for(const t of i)e.setAttribute(o,!0,t);e.removeSelectionAttribute(o)}),t.model.document.on("change",(e,n)=>{if("transparent"==n.type)return;const i=t.model,o=i.document.selection;if(!o.isCollapsed)return;const a=Array.from(i.document.differ.getChanges()),c=a[0];if(1!=a.length||"insert"!==c.type||"$text"!=c.name||1!=c.length)return;const l=o.focus,d=l.parent,{text:u,range:h}=mu(i.createRange(i.createPositionAt(d,0),l),i),f=r(u),m=pu(h.start,f.format,i),g=pu(h.start,f.remove,i);m.length&&g.length&&i.enqueueChange(t=>{if(!1!==s(t,m))for(const e of g.reverse())t.remove(e)})})}}function pu(t,e,n){return e.filter(t=>void 0!==t[0]&&void 0!==t[1]).map(e=>n.createRange(t.getShiftedBy(e[0]),t.getShiftedBy(e[1])))}function bu(t,e){return(n,i)=>{if(!t.commands.get(e).isEnabled)return!1;const o=t.model.schema.getValidRanges(i,e);for(const t of o)n.setAttribute(e,!0,t);n.removeSelectionAttribute(e)}}class wu extends ld{constructor(t,e){super(t),this.attributeKey=e}refresh(){const t=this.editor.model,e=t.document;this.value=this._getValueFromFirstAllowedNode(),this.isEnabled=t.schema.checkAttributeInSelection(e.selection,this.attributeKey)}execute(t={}){const e=this.editor.model,n=e.document.selection,i=void 0===t.forceValue?!this.value:t.forceValue;e.change(t=>{if(n.isCollapsed)i?t.setSelectionAttribute(this.attributeKey,!0):t.removeSelectionAttribute(this.attributeKey);else{const o=e.schema.getValidRanges(n.getRanges(),this.attributeKey);for(const e of o)i?t.setAttribute(this.attributeKey,i,e):t.removeAttribute(this.attributeKey,e)}})}_getValueFromFirstAllowedNode(){const t=this.editor.model,e=t.schema,n=t.document.selection;if(n.isCollapsed)return n.hasAttribute(this.attributeKey);for(const t of n.getRanges())for(const n of t.getItems())if(e.checkAttribute(n,this.attributeKey))return n.hasAttribute(this.attributeKey);return!1}}class ku extends Mc{static get pluginName(){return"BoldEditing"}init(){const t=this.editor;t.model.schema.extend("$text",{allowAttributes:"bold"}),t.model.schema.setAttributeProperties("bold",{isFormatting:!0,copyOnEnter:!0}),t.conversion.attributeToElement({model:"bold",view:"strong",upcastAlso:["b",t=>{const e=t.getStyle("font-weight");return e?"bold"==e||Number(e)>=600?{name:!0,styles:["font-weight"]}:void 0:null}]}),t.commands.add("bold",new wu(t,"bold")),t.keystrokes.set("CTRL+B","bold")}}class _u extends Mc{init(){const t=this.editor,e=t.t;t.ui.componentFactory.add("bold",n=>{const i=t.commands.get("bold"),o=new ul(n);return o.set({label:e("Bold"),icon:'',keystroke:"CTRL+B",tooltip:!0,isToggleable:!0}),o.bind("isOn","isEnabled").to(i,"value","isEnabled"),this.listenTo(o,"execute",()=>{t.execute("bold"),t.editing.view.focus()}),o})}}class vu extends Mc{static get pluginName(){return"ItalicEditing"}init(){const t=this.editor;t.model.schema.extend("$text",{allowAttributes:"italic"}),t.model.schema.setAttributeProperties("italic",{isFormatting:!0,copyOnEnter:!0}),t.conversion.attributeToElement({model:"italic",view:"i",upcastAlso:["em",{styles:{"font-style":"italic"}}]}),t.commands.add("italic",new wu(t,"italic")),t.keystrokes.set("CTRL+I","italic")}}class yu extends Mc{init(){const t=this.editor,e=t.t;t.ui.componentFactory.add("italic",n=>{const i=t.commands.get("italic"),o=new ul(n);return o.set({label:e("Italic"),icon:'',keystroke:"CTRL+I",tooltip:!0,isToggleable:!0}),o.bind("isOn","isEnabled").to(i,"value","isEnabled"),this.listenTo(o,"execute",()=>{t.execute("italic"),t.editing.view.focus()}),o})}}function xu(t){const e=t.next();return e.done?null:e.value}class Au extends ld{refresh(){this.value=this._getValue(),this.isEnabled=this._checkEnabled()}execute(t={}){const e=this.editor.model,n=e.schema,i=e.document.selection,o=Array.from(i.getSelectedBlocks()),r=void 0===t.forceValue?!this.value:t.forceValue;e.change(t=>{if(r){const e=o.filter(t=>Cu(t)||Pu(n,t));this._applyQuote(t,e)}else this._removeQuote(t,o.filter(Cu))})}_getValue(){const t=xu(this.editor.model.document.selection.getSelectedBlocks());return!(!t||!Cu(t))}_checkEnabled(){if(this.value)return!0;const t=this.editor.model.document.selection,e=this.editor.model.schema,n=xu(t.getSelectedBlocks());return!!n&&Pu(e,n)}_removeQuote(t,e){Tu(t,e).reverse().forEach(e=>{if(e.start.isAtStart&&e.end.isAtEnd)return void t.unwrap(e.start.parent);if(e.start.isAtStart){const n=t.createPositionBefore(e.start.parent);return void t.move(e,n)}e.end.isAtEnd||t.split(e.end);const n=t.createPositionAfter(e.end.parent);t.move(e,n)})}_applyQuote(t,e){const n=[];Tu(t,e).reverse().forEach(e=>{let i=Cu(e.start);i||(i=t.createElement("blockQuote"),t.wrap(e,i)),n.push(i)}),n.reverse().reduce((e,n)=>e.nextSibling==n?(t.merge(t.createPositionAfter(e)),e):n)}}function Cu(t){return"blockQuote"==t.parent.name?t.parent:null}function Tu(t,e){let n,i=0;const o=[];for(;i{if(t.endsWith("blockQuote")&&"blockQuote"==e.name)return!1}),t.conversion.elementToElement({model:"blockQuote",view:"blockquote"}),t.model.document.registerPostFixer(n=>{const i=t.model.document.differ.getChanges();for(const t of i)if("insert"==t.type){const i=t.position.nodeAfter;if(!i)continue;if(i.is("blockQuote")&&i.isEmpty)return n.remove(i),!0;if(i.is("blockQuote")&&!e.checkChild(t.position,i))return n.unwrap(i),!0;if(i.is("element")){const t=n.createRangeIn(i);for(const i of t.getItems())if(i.is("blockQuote")&&!e.checkChild(n.createPositionBefore(i),i))return n.unwrap(i),!0}}else if("remove"==t.type){const e=t.position.parent;if(e.is("blockQuote")&&e.isEmpty)return n.remove(e),!0}return!1})}afterInit(){const t=this.editor.commands.get("blockQuote");this.listenTo(this.editor.editing.view.document,"enter",(e,n)=>{const i=this.editor.model.document,o=i.selection.getLastPosition().parent;i.selection.isCollapsed&&o.isEmpty&&t.value&&(this.editor.execute("blockQuote"),this.editor.editing.view.scrollToTheSelection(),n.preventDefault(),e.stop())})}}n(43);class Mu extends Mc{init(){const t=this.editor,e=t.t;t.ui.componentFactory.add("blockQuote",n=>{const i=t.commands.get("blockQuote"),o=new ul(n);return o.set({label:e("Block quote"),icon:'',tooltip:!0,isToggleable:!0}),o.bind("isOn","isEnabled").to(i,"value","isEnabled"),this.listenTo(o,"execute",()=>{t.execute("blockQuote"),t.editing.view.focus()}),o})}}class Eu extends Mc{static get pluginName(){return"CKFinderUI"}init(){const t=this.editor,e=t.ui.componentFactory,n=t.t;e.add("ckfinder",e=>{const i=t.commands.get("ckfinder"),o=new ul(e);return o.set({label:n("Insert image or file"),icon:'',tooltip:!0}),o.bind("isEnabled").to(i),o.on("execute",()=>{t.execute("ckfinder"),t.editing.view.focus()}),o})}}class Iu extends ur{observe(t){this.listenTo(t,"load",(t,e)=>{"IMG"==e.target.tagName&&this._fireEvents(e)},{useCapture:!0})}_fireEvents(t){this.isEnabled&&(this.document.fire("layoutChanged"),this.document.fire("imageLoaded",t))}}class Nu{constructor(){this._stack=[]}add(t,e){const n=this._stack,i=n[0];this._insertDescriptor(t);const o=n[0];i===o||Ou(i,o)||this.fire("change:top",{oldDescriptor:i,newDescriptor:o,writer:e})}remove(t,e){const n=this._stack,i=n[0];this._removeDescriptor(t);const o=n[0];i===o||Ou(i,o)||this.fire("change:top",{oldDescriptor:i,newDescriptor:o,writer:e})}_insertDescriptor(t){const e=this._stack,n=e.findIndex(e=>e.id===t.id);if(Ou(t,e[n]))return;n>-1&&e.splice(n,1);let i=0;for(;e[i]&&Ru(e[i],t);)i++;e.splice(i,0,t)}_removeDescriptor(t){const e=this._stack,n=e.findIndex(e=>e.id===t);n>-1&&e.splice(n,1)}}function Ou(t,e){return t&&e&&t.priority==e.priority&&Du(t.classes)==Du(e.classes)}function Ru(t,e){return t.priority>e.priority||!(t.priorityDu(e.classes)}function Du(t){return Array.isArray(t)?t.sort().join(","):t}xn(Nu,gn);function Lu(t){return!!t.is("element")&&!!t.getCustomProperty("widget")}function ju(t,e,n={}){return e.setAttribute("contenteditable","false",t),e.addClass("ck-widget",t),e.setCustomProperty("widget",!0,t),t.getFillerOffset=Fu,n.label&&function(t,e,n){n.setCustomProperty("widgetLabel",e,t)}(t,n.label,e),n.hasSelectionHandle&&function(t,e){const n=e.createUIElement("div",{class:"ck ck-widget__selection-handle"},(function(t){const e=this.toDomElement(t),n=new ll;return n.set("content",''),n.render(),e.appendChild(n.element),e}));e.insert(e.createPositionAt(t,0),n),e.addClass(["ck-widget_with-selection-handle"],t)}(t,e),function(t,e,n,i){const o=new Nu;o.on("change:top",(e,o)=>{o.oldDescriptor&&i(t,o.oldDescriptor,o.writer),o.newDescriptor&&n(t,o.newDescriptor,o.writer)}),e.setCustomProperty("addHighlight",(t,e,n)=>o.add(e,n),t),e.setCustomProperty("removeHighlight",(t,e,n)=>o.remove(e,n),t)}(t,e,(t,e,n)=>n.addClass(i(e.classes),t),(t,e,n)=>n.removeClass(i(e.classes),t)),t;function i(t){return Array.isArray(t)?t:[t]}}function Vu(t){const e=t.getCustomProperty("widgetLabel");return e?"function"==typeof e?e():e:""}function zu(t,e){return e.addClass(["ck-editor__editable","ck-editor__nested-editable"],t),e.setAttribute("contenteditable",t.isReadOnly?"false":"true",t),t.on("change:isReadOnly",(n,i,o)=>{e.setAttribute("contenteditable",o?"false":"true",t)}),t.on("change:isFocused",(n,i,o)=>{o?e.addClass("ck-editor__nested-editable_focused",t):e.removeClass("ck-editor__nested-editable_focused",t)}),t}function Bu(t,e){const n=t.getSelectedElement();if(n&&e.schema.isBlock(n))return e.createPositionAfter(n);const i=t.getSelectedBlocks().next().value;if(i){if(i.isEmpty)return e.createPositionAt(i,0);const n=e.createPositionAfter(i);return t.focus.isTouching(n)?n:e.createPositionBefore(i)}return t.focus}function Fu(){return null}function Uu(t){const e=t.getSelectedElement();return e&&function(t){return!!t.getCustomProperty("image")&&Lu(t)}(e)?e:null}function Hu(t){return!!t&&t.is("image")}function Wu(t,e,n={}){const i=t.createElement("image",n),o=Bu(e.document.selection,e);e.insertContent(i,o),i.parent&&t.setSelection(i,"on")}function qu(t){const e=t.schema,n=t.document.selection;return function(t,e,n){const i=function(t,e){const n=Bu(t,e).parent;if(n.isEmpty&&!n.is("$root"))return n.parent;return n}(t,n);return e.checkChild(i,"image")}(n,e,t)&&!function(t,e){const n=t.getSelectedElement();return n&&e.isObject(n)}(n,e)&&function(t){return[...t.focus.getAncestors()].every(t=>!t.is("image"))}(n)}function Yu(t){return Array.from(t.getChildren()).find(t=>t.is("img"))}function Gu(t){return n=>{n.on(`attribute:${t}:image`,e)};function e(t,e,n){if(!n.consumable.consume(e.item,t.name))return;const i=n.writer,o=Yu(n.mapper.toViewElement(e.item));null!==e.attributeNewValue?i.setAttribute(e.attributeKey,e.attributeNewValue,o):i.removeAttribute(e.attributeKey,o)}}class $u extends ld{refresh(){this.isEnabled=qu(this.editor.model)}execute(t){const e=this.editor.model;e.change(n=>{const i=Array.isArray(t.source)?t.source:[t.source];for(const t of i)Wu(n,e,{src:t})})}}class Qu extends Mc{static get pluginName(){return"ImageEditing"}init(){const t=this.editor,e=t.model.schema,n=t.t,i=t.conversion;t.editing.view.addObserver(Iu),e.register("image",{isObject:!0,isBlock:!0,allowWhere:"$block",allowAttributes:["alt","src","srcset"]}),i.for("dataDowncast").elementToElement({model:"image",view:(t,e)=>Ku(e)}),i.for("editingDowncast").elementToElement({model:"image",view:(t,e)=>{return i=Ku(e),o=e,r=n("image widget"),o.setCustomProperty("image",!0,i),ju(i,o,{label:function(){const t=Yu(i).getAttribute("alt");return t?`${t} ${r}`:r}});var i,o,r}}),i.for("downcast").add(Gu("src")).add(Gu("alt")).add(function(){return e=>{e.on("attribute:srcset:image",t)};function t(t,e,n){if(!n.consumable.consume(e.item,t.name))return;const i=n.writer,o=Yu(n.mapper.toViewElement(e.item));if(null===e.attributeNewValue){const t=e.attributeOldValue;t.data&&(i.removeAttribute("srcset",o),i.removeAttribute("sizes",o),t.width&&i.removeAttribute("width",o))}else{const t=e.attributeNewValue;t.data&&(i.setAttribute("srcset",t.data,o),i.setAttribute("sizes","100vw",o),t.width&&i.setAttribute("width",t.width,o))}}}()),i.for("upcast").elementToElement({view:{name:"img",attributes:{src:!0}},model:(t,e)=>e.createElement("image",{src:t.getAttribute("src")})}).attributeToAttribute({view:{name:"img",key:"alt"},model:"alt"}).attributeToAttribute({view:{name:"img",key:"srcset"},model:{key:"srcset",value:t=>{const e={data:t.getAttribute("srcset")};return t.hasAttribute("width")&&(e.width=t.getAttribute("width")),e}}}).add(function(){return e=>{e.on("element:figure",t)};function t(t,e,n){if(!n.consumable.test(e.viewItem,{name:!0,classes:"image"}))return;const i=Yu(e.viewItem);if(!i||!i.hasAttribute("src")||!n.consumable.test(i,{name:!0}))return;const o=n.convertItem(i,e.modelCursor),r=xu(o.modelRange.getItems());r&&(n.convertChildren(e.viewItem,n.writer.createPositionAt(r,0)),e.modelRange=o.modelRange,e.modelCursor=o.modelCursor)}}()),t.commands.add("imageInsert",new $u(t))}}function Ku(t){const e=t.createEmptyElement("img"),n=t.createContainerElement("figure",{class:"image"});return t.insert(t.createPositionAt(n,0),e),n}function Ju(t,e,n){return n.createRange(Zu(t,e,!0,n),Zu(t,e,!1,n))}function Zu(t,e,n,i){let o=t.textNode||(n?t.nodeBefore:t.nodeAfter),r=null;for(;o&&o.getAttribute("linkHref")==e;)r=o,o=n?o.previousSibling:o.nextSibling;return r?i.createPositionAt(r,n?"before":"after"):t}class Xu extends ld{constructor(t){super(t),this.manualDecorators=new An}restoreManualDecoratorStates(){for(const t of this.manualDecorators)t.value=this._getDecoratorStateFromModel(t.id)}refresh(){const t=this.editor.model,e=t.document;this.value=e.selection.getAttribute("linkHref");for(const t of this.manualDecorators)t.value=this._getDecoratorStateFromModel(t.id);this.isEnabled=t.schema.checkAttributeInSelection(e.selection,"linkHref")}execute(t,e={}){const n=this.editor.model,i=n.document.selection,o=[],r=[];for(const t in e)e[t]?o.push(t):r.push(t);n.change(e=>{if(i.isCollapsed){const s=i.getFirstPosition();if(i.hasAttribute("linkHref")){const a=Ju(s,i.getAttribute("linkHref"),n);e.setAttribute("linkHref",t,a),o.forEach(t=>{e.setAttribute(t,!0,a)}),r.forEach(t=>{e.removeAttribute(t,a)}),e.setSelection(a)}else if(""!==t){const r=Ln(i.getAttributes());r.set("linkHref",t),o.forEach(t=>{r.set(t,!0)});const a=e.createText(t,r);n.insertContent(a,s),e.setSelection(e.createRangeOn(a))}}else{const s=n.schema.getValidRanges(i.getRanges(),"linkHref");for(const n of s)e.setAttribute("linkHref",t,n),o.forEach(t=>{e.setAttribute(t,!0,n)}),r.forEach(t=>{e.removeAttribute(t,n)})}})}_getDecoratorStateFromModel(t){return this.editor.model.document.selection.getAttribute(t)}}class th extends ld{refresh(){this.isEnabled=this.editor.model.document.selection.hasAttribute("linkHref")}execute(){const t=this.editor,e=this.editor.model,n=e.document.selection,i=t.commands.get("link");e.change(t=>{const o=n.isCollapsed?[Ju(n.getFirstPosition(),n.getAttribute("linkHref"),e)]:n.getRanges();for(const e of o)if(t.removeAttribute("linkHref",e),i)for(const n of i.manualDecorators)t.removeAttribute(n.id,e)})}}var eh=function(t,e,n){var i=t.length;return n=void 0===n?i:n,!e&&n>=i?t:ii(t,e,n)},nh=RegExp("[\\u200d\\ud800-\\udfff\\u0300-\\u036f\\ufe20-\\ufe2f\\u20d0-\\u20ff\\ufe0e\\ufe0f]");var ih=function(t){return nh.test(t)};var oh=function(t){return t.split("")},rh="[\\ud800-\\udfff]",sh="[\\u0300-\\u036f\\ufe20-\\ufe2f\\u20d0-\\u20ff]",ah="\\ud83c[\\udffb-\\udfff]",ch="[^\\ud800-\\udfff]",lh="(?:\\ud83c[\\udde6-\\uddff]){2}",dh="[\\ud800-\\udbff][\\udc00-\\udfff]",uh="(?:"+sh+"|"+ah+")"+"?",hh="[\\ufe0e\\ufe0f]?"+uh+("(?:\\u200d(?:"+[ch,lh,dh].join("|")+")[\\ufe0e\\ufe0f]?"+uh+")*"),fh="(?:"+[ch+sh+"?",sh,lh,dh,rh].join("|")+")",mh=RegExp(ah+"(?="+ah+")|"+fh+hh,"g");var gh=function(t){return t.match(mh)||[]};var ph=function(t){return ih(t)?gh(t):oh(t)};var bh=function(t){return function(e){e=Zn(e);var n=ih(e)?ph(e):void 0,i=n?n[0]:e.charAt(0),o=n?eh(n,1).join(""):e.slice(1);return i[t]()+o}}("toUpperCase");const wh=/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205f\u3000]/g,kh=/^(?:(?:https?|ftps?|mailto):|[^a-z]|[a-z+.-]+(?:[^a-z+.:-]|$))/i;function _h(t,e){const n=e.createAttributeElement("a",{href:t},{priority:5});return e.setCustomProperty("link",!0,n),n}function vh(t){return function(t){return t.replace(wh,"").match(kh)}(t=String(t))?t:"#"}class yh{constructor(){this._definitions=new Set}get length(){return this._definitions.size}add(t){Array.isArray(t)?t.forEach(t=>this._definitions.add(t)):this._definitions.add(t)}getDispatcher(){return t=>{t.on("attribute:linkHref",(t,e,n)=>{if(!n.consumable.test(e.item,"attribute:linkHref"))return;const i=n.writer,o=i.document.selection;for(const t of this._definitions){const r=i.createAttributeElement("a",t.attributes,{priority:5});i.setCustomProperty("link",!0,r),t.callback(e.attributeNewValue)?e.item.is("selection")?i.wrap(o.getFirstRange(),r):i.wrap(n.mapper.toViewRange(e.range),r):i.unwrap(n.mapper.toViewRange(e.range),r)}},{priority:"high"})}}}class xh{constructor({id:t,label:e,attributes:n,defaultValue:i}){this.id=t,this.set("value"),this.defaultValue=i,this.label=e,this.attributes=n}}xn(xh,Ui);class Ah{constructor(t,e,n){this.model=t,this.attribute=n,this._modelSelection=t.document.selection,this._overrideUid=null,this._isNextGravityRestorationSkipped=!1,e.listenTo(this._modelSelection,"change:range",(t,e)=>{this._isNextGravityRestorationSkipped?this._isNextGravityRestorationSkipped=!1:this._isGravityOverridden&&(!e.directChange&&Ch(this._modelSelection.getFirstPosition(),n)||this._restoreGravity())})}handleForwardMovement(t,e){const n=this.attribute;if(!(this._isGravityOverridden||t.isAtStart&&this._hasSelectionAttribute))return Sh(t,n)&&this._hasSelectionAttribute?(this._preventCaretMovement(e),this._removeSelectionAttribute(),!0):Th(t,n)||Ph(t,n)&&this._hasSelectionAttribute?(this._preventCaretMovement(e),this._overrideGravity(),!0):void 0}handleBackwardMovement(t,e){const n=this.attribute;return this._isGravityOverridden?Sh(t,n)&&this._hasSelectionAttribute?(this._preventCaretMovement(e),this._restoreGravity(),this._removeSelectionAttribute(),!0):(this._preventCaretMovement(e),this._restoreGravity(),t.isAtStart&&this._removeSelectionAttribute(),!0):Sh(t,n)&&!this._hasSelectionAttribute?(this._preventCaretMovement(e),this._setSelectionAttributeFromTheNodeBefore(t),!0):t.isAtEnd&&Ph(t,n)?this._hasSelectionAttribute?void(Mh(t,n)&&(this._skipNextAutomaticGravityRestoration(),this._overrideGravity())):(this._preventCaretMovement(e),this._setSelectionAttributeFromTheNodeBefore(t),!0):t.isAtStart?this._hasSelectionAttribute?(this._removeSelectionAttribute(),this._preventCaretMovement(e),!0):void 0:void(Mh(t,n)&&(this._skipNextAutomaticGravityRestoration(),this._overrideGravity()))}get _isGravityOverridden(){return!!this._overrideUid}get _hasSelectionAttribute(){return this._modelSelection.hasAttribute(this.attribute)}_overrideGravity(){this._overrideUid=this.model.change(t=>t.overrideSelectionGravity())}_restoreGravity(){this.model.change(t=>{t.restoreSelectionGravity(this._overrideUid),this._overrideUid=null})}_preventCaretMovement(t){t.preventDefault()}_removeSelectionAttribute(){this.model.change(t=>{t.removeSelectionAttribute(this.attribute)})}_setSelectionAttributeFromTheNodeBefore(t){const e=this.attribute;this.model.change(n=>{n.setSelectionAttribute(this.attribute,t.nodeBefore.getAttribute(e))})}_skipNextAutomaticGravityRestoration(){this._isNextGravityRestorationSkipped=!0}}function Ch(t,e){return Th(t,e)||Ph(t,e)}function Th(t,e){const{nodeBefore:n,nodeAfter:i}=t,o=!!n&&n.hasAttribute(e);return!!i&&i.hasAttribute(e)&&(!o||n.getAttribute(e)!==i.getAttribute(e))}function Ph(t,e){const{nodeBefore:n,nodeAfter:i}=t,o=!!n&&n.hasAttribute(e),r=!!i&&i.hasAttribute(e);return o&&(!r||n.getAttribute(e)!==i.getAttribute(e))}function Sh(t,e){const{nodeBefore:n,nodeAfter:i}=t,o=!!n&&n.hasAttribute(e);if(!!i&&i.hasAttribute(e)&&o)return i.getAttribute(e)!==n.getAttribute(e)}function Mh(t,e){return Ch(t.getShiftedBy(-1),e)}n(45);const Eh=/^(https?:)?\/\//;class Ih extends Mc{static get pluginName(){return"LinkEditing"}constructor(t){super(t),t.config.define("link",{addTargetToExternalLinks:!1})}init(){const t=this.editor,e=t.locale;t.model.schema.extend("$text",{allowAttributes:"linkHref"}),t.conversion.for("dataDowncast").attributeToElement({model:"linkHref",view:_h}),t.conversion.for("editingDowncast").attributeToElement({model:"linkHref",view:(t,e)=>_h(vh(t),e)}),t.conversion.for("upcast").elementToAttribute({view:{name:"a",attributes:{href:!0}},model:{key:"linkHref",value:t=>t.getAttribute("href")}}),t.commands.add("link",new Xu(t)),t.commands.add("unlink",new th(t));const n=function(t,e){const n={"Open in a new tab":t("Open in a new tab"),Downloadable:t("Downloadable")};return e.forEach(t=>(t.label&&n[t.label]&&(t.label=n[t.label]),t)),e}(t.t,function(t){const e=[];if(t)for(const[n,i]of Object.entries(t)){const t=Object.assign({},i,{id:"link"+bh(n)});e.push(t)}return e}(t.config.get("link.decorators")));this._enableAutomaticDecorators(n.filter(t=>"automatic"===t.mode)),this._enableManualDecorators(n.filter(t=>"manual"===t.mode)),function({view:t,model:e,emitter:n,attribute:i,locale:o}){const r=new Ah(e,n,i),s=e.document.selection;n.listenTo(t.document,"keydown",(t,e)=>{if(!s.isCollapsed)return;if(e.shiftKey||e.altKey||e.ctrlKey)return;const n=e.keyCode==go.arrowright,i=e.keyCode==go.arrowleft;if(!n&&!i)return;const a=s.getFirstPosition(),c=o.contentLanguageDirection;let l;l="ltr"===c&&n||"rtl"===c&&i?r.handleForwardMovement(a,e):r.handleBackwardMovement(a,e),l&&t.stop()},{priority:un.get("high")+1})}({view:t.editing.view,model:t.model,emitter:this,attribute:"linkHref",locale:e}),this._setupLinkHighlight(),this._enableInsertContentSelectionAttributesFixer()}_enableAutomaticDecorators(t){const e=this.editor,n=new yh;e.config.get("link.addTargetToExternalLinks")&&n.add({id:"linkIsExternal",mode:"automatic",callback:t=>Eh.test(t),attributes:{target:"_blank",rel:"noopener noreferrer"}}),n.add(t),n.length&&e.conversion.for("downcast").add(n.getDispatcher())}_enableManualDecorators(t){if(!t.length)return;const e=this.editor,n=e.commands.get("link").manualDecorators;t.forEach(t=>{e.model.schema.extend("$text",{allowAttributes:t.id}),n.add(new xh(t)),e.conversion.for("downcast").attributeToElement({model:t.id,view:(e,i)=>{if(e){const e=n.get(t.id).attributes,o=i.createAttributeElement("a",e,{priority:5});return i.setCustomProperty("link",!0,o),o}}}),e.conversion.for("upcast").elementToAttribute({view:{name:"a",attributes:n.get(t.id).attributes},model:{key:t.id}})})}_setupLinkHighlight(){const t=this.editor,e=t.editing.view,n=new Set;e.document.registerPostFixer(e=>{const i=t.model.document.selection;let o=!1;if(i.hasAttribute("linkHref")){const r=Ju(i.getFirstPosition(),i.getAttribute("linkHref"),t.model),s=t.editing.mapper.toViewRange(r);for(const t of s.getItems())t.is("a")&&!t.hasClass("ck-link_selected")&&(e.addClass("ck-link_selected",t),n.add(t),o=!0)}return o}),t.conversion.for("editingDowncast").add(t=>{function i(){e.change(t=>{for(const e of n.values())t.removeClass("ck-link_selected",e),n.delete(e)})}t.on("insert",i,{priority:"highest"}),t.on("remove",i,{priority:"highest"}),t.on("attribute",i,{priority:"highest"}),t.on("selection",i,{priority:"highest"})})}_enableInsertContentSelectionAttributesFixer(){const t=this.editor.model,e=t.document.selection;t.on("insertContent",()=>{const n=e.anchor.nodeBefore,i=e.anchor.nodeAfter;e.hasAttribute("linkHref")&&n&&n.hasAttribute("linkHref")&&(i&&i.hasAttribute("linkHref")||t.change(e=>{[...t.document.selection.getAttributeKeys()].filter(t=>t.startsWith("link")).forEach(t=>e.removeSelectionAttribute(t))}))},{priority:"low"})}}class Nh extends ru{static get pluginName(){return"Notification"}init(){this.on("show:warning",(t,e)=>{window.alert(e.message)},{priority:"lowest"})}showSuccess(t,e={}){this._showNotification({message:t,type:"success",namespace:e.namespace,title:e.title})}showInfo(t,e={}){this._showNotification({message:t,type:"info",namespace:e.namespace,title:e.title})}showWarning(t,e={}){this._showNotification({message:t,type:"warning",namespace:e.namespace,title:e.title})}_showNotification(t){const e="show:"+t.type+(t.namespace?":"+t.namespace:"");this.fire(e,{message:t.message,type:t.type,title:t.title||""})}}class Oh extends ld{constructor(t){super(t),this.stopListening(this.editor.model.document,"change"),this.listenTo(this.editor.model.document,"change",()=>this.refresh(),{priority:"low"})}refresh(){const t=this.editor.commands.get("imageInsert"),e=this.editor.commands.get("link");this.isEnabled=t.isEnabled||e.isEnabled}execute(){const t=this.editor,e=this.editor.config.get("ckfinder.openerMethod")||"modal";if("popup"!=e&&"modal"!=e)throw new hn.b('ckfinder-unknown-openerMethod: The openerMethod config option must by "popup" or "modal".',t);const n=this.editor.config.get("ckfinder.options")||{};n.chooseFiles=!0;const i=n.onInit;n.language||(n.language=t.locale.uiLanguage),n.onInit=e=>{i&&i(e),e.on("files:choose",n=>{const i=n.data.files.toArray(),o=i.filter(t=>!t.isImage()),r=i.filter(t=>t.isImage());for(const e of o)t.execute("link",e.getUrl());const s=[];for(const t of r){const n=t.getUrl();s.push(n||e.request("file:getProxyUrl",{file:t}))}s.length&&Rh(t,s)}),e.on("file:choose:resizedImage",e=>{const n=e.data.resizedUrl;if(n)Rh(t,[n]);else{const e=t.plugins.get("Notification"),n=t.locale.t;e.showWarning(n("Could not obtain resized image URL."),{title:n("Selecting resized image failed"),namespace:"ckfinder"})}})},window.CKFinder[e](n)}}function Rh(t,e){if(t.commands.get("imageInsert").isEnabled)t.execute("imageInsert",{source:e});else{const e=t.plugins.get("Notification"),n=t.locale.t;e.showWarning(n("Could not insert image at the current position."),{title:n("Inserting image failed"),namespace:"ckfinder"})}}class Dh extends Mc{static get pluginName(){return"CKFinderEditing"}static get requires(){return[Nh,Qu,Ih]}init(){const t=this.editor;t.commands.add("ckfinder",new Oh(t))}}const Lh=/^data:(\S*?);base64,/;class jh{constructor(t,e,n){if(!t)throw new hn.b("fileuploader-missing-file: File must be provided as the first argument",null);if(!e)throw new hn.b("fileuploader-missing-token: Token must be provided as the second argument.",null);if(!n)throw new hn.b("fileuploader-missing-api-address: Api address must be provided as the third argument.",null);this.file=function(t){if("string"!=typeof t)return!1;const e=t.match(Lh);return!(!e||!e.length)}(t)?function(t,e=512){try{const n=t.match(Lh)[1],i=atob(t.replace(Lh,"")),o=[];for(let t=0;tt(n)),this}onError(t){return this.once("error",(e,n)=>t(n)),this}abort(){this.xhr.abort()}send(){return this._prepareRequest(),this._attachXHRListeners(),this._sendRequest()}_prepareRequest(){const t=new XMLHttpRequest;t.open("POST",this._apiAddress),t.setRequestHeader("Authorization",this._token.value),t.responseType="json",this.xhr=t}_attachXHRListeners(){const t=this,e=this.xhr;function n(e){return()=>t.fire("error",e)}e.addEventListener("error",n("Network Error")),e.addEventListener("abort",n("Abort")),e.upload&&e.upload.addEventListener("progress",t=>{t.lengthComputable&&this.fire("progress",{total:t.total,uploaded:t.loaded})}),e.addEventListener("load",()=>{const t=e.status,n=e.response;if(t<200||t>299)return this.fire("error",n.message||n.error)})}_sendRequest(){const t=new FormData,e=this.xhr;return t.append("file",this.file),new Promise((n,i)=>{e.addEventListener("load",()=>{const t=e.status,o=e.response;return t<200||t>299?o.message?i(new hn.b("fileuploader-uploading-data-failed: Uploading file failed.",this,{message:o.message})):i(o.error):n(o)}),e.addEventListener("error",()=>i(new Error("Network Error"))),e.addEventListener("abort",()=>i(new Error("Abort"))),e.send(t)})}}xn(jh,gn);const Vh={refreshInterval:36e5,autoRefresh:!0};class zh{constructor(t,e=Vh){if(!t)throw new hn.b("token-missing-token-url: A `tokenUrl` must be provided as the first constructor argument.",this);this.set("value",e.initValue),this._refresh="function"==typeof t?t:()=>{return e=t,new Promise((t,n)=>{const i=new XMLHttpRequest;i.open("GET",e),i.addEventListener("load",()=>{const e=i.status,o=i.response;return e<200||e>299?n(new hn.b("token-cannot-download-new-token: Cannot download new token from the provided url.",null)):t(o)}),i.addEventListener("error",()=>n(new Error("Network Error"))),i.addEventListener("abort",()=>n(new Error("Abort"))),i.send()});var e},this._options=Object.assign({},Vh,e)}init(){return new Promise((t,e)=>{this._options.autoRefresh&&this._startRefreshing(),this.value?t(this):this.refreshToken().then(t).catch(e)})}refreshToken(){return this._refresh().then(t=>this.set("value",t)).then(()=>this)}destroy(){this._stopRefreshing()}_startRefreshing(){this._refreshInterval=setInterval(()=>this.refreshToken(),this._options.refreshInterval)}_stopRefreshing(){clearInterval(this._refreshInterval)}static create(t,e=Vh){return new zh(t,e).init()}}xn(zh,Ui);var Bh=zh;class Fh extends ru{static get pluginName(){return"CloudServices"}init(){const t=this.context.config.get("cloudServices")||{};for(const e in t)this[e]=t[e];if(this.tokenUrl)return this.token=new Fh.Token(this.tokenUrl),this.token.init();this.token=null}}Fh.Token=Bh;class Uh extends Mc{static get requires(){return[cu,Fh]}init(){const t=this.editor,e=t.plugins.get(Fh),n=e.token,i=e.uploadUrl;n&&(this._uploadGateway=new Uh._UploadGateway(n,i),t.plugins.get(cu).createUploadAdapter=t=>new Hh(this._uploadGateway,t))}}class Hh{constructor(t,e){this.uploadGateway=t,this.loader=e}upload(){return this.loader.file.then(t=>(this.fileUploader=this.uploadGateway.upload(t),this.fileUploader.on("progress",(t,e)=>{this.loader.uploadTotal=e.total,this.loader.uploaded=e.uploaded}),this.fileUploader.send()))}abort(){this.fileUploader.abort()}}Uh._UploadGateway=class{constructor(t,e){if(!t)throw new hn.b("uploadgateway-missing-token: Token must be provided.",null);if(!e)throw new hn.b("uploadgateway-missing-api-address: Api address must be provided.",null);this._token=t,this._apiAddress=e}upload(t){return new jh(t,this._token,this._apiAddress)}};class Wh extends Nr{constructor(t){super(t),this.domEventType="mousedown"}onDomEvent(t){this.fire(t.type,t)}}n(47);class qh extends Mc{static get pluginName(){return"Widget"}init(){const t=this.editor.editing.view,e=t.document;this._previouslySelected=new Set,this.editor.editing.downcastDispatcher.on("selection",(t,e,n)=>{this._clearPreviouslySelectedWidgets(n.writer);const i=n.writer,o=i.document.selection,r=o.getSelectedElement();let s=null;for(const t of o.getRanges())for(const e of t){const t=e.item;Lu(t)&&!Yh(t,s)&&(i.addClass("ck-widget_selected",t),this._previouslySelected.add(t),s=t,t==r&&i.setSelection(o.getRanges(),{fake:!0,label:Vu(r)}))}},{priority:"low"}),t.addObserver(Wh),this.listenTo(e,"mousedown",(...t)=>this._onMousedown(...t)),this.listenTo(e,"keydown",(...t)=>this._onKeydown(...t),{priority:"high"}),this.listenTo(e,"delete",(t,e)=>{this._handleDelete("forward"==e.direction)&&(e.preventDefault(),t.stop())},{priority:"high"})}_onMousedown(t,e){const n=this.editor,i=n.editing.view,o=i.document;let r=e.target;if(function(t){for(;t;){if(t.is("editableElement")&&!t.is("rootElement"))return!0;if(Lu(t))return!1;t=t.parent}return!1}(r)){if(ho.isSafari&&e.domEvent.detail>=3){const t=n.editing.mapper.toModelElement(r);this.editor.model.change(n=>{e.preventDefault(),n.setSelection(t,"in")})}return}if(!Lu(r)&&(r=r.findAncestor(Lu),!r))return;e.preventDefault(),o.isFocused||i.focus();const s=n.editing.mapper.toModelElement(r);this._setSelectionOverElement(s)}_onKeydown(t,e){const n=e.keyCode,i="ltr"===this.editor.locale.contentLanguageDirection,o=n==go.arrowdown||n==go[i?"arrowright":"arrowleft"];let r=!1;!function(t){return t==go.arrowright||t==go.arrowleft||t==go.arrowup||t==go.arrowdown}(n)?n===go.enter&&(r=this._handleEnterKey(e.shiftKey)):r=this._handleArrowKeys(o),r&&(e.preventDefault(),t.stop())}_handleDelete(t){if(this.editor.isReadOnly)return;const e=this.editor.model.document.selection;if(!e.isCollapsed)return;const n=this._getObjectElementNextToSelection(t);return n?(this.editor.model.change(t=>{let i=e.anchor.parent;for(;i.isEmpty;){const e=i;i=e.parent,t.remove(e)}this._setSelectionOverElement(n)}),!0):void 0}_handleArrowKeys(t){const e=this.editor.model,n=e.schema,i=e.document.selection,o=i.getSelectedElement();if(o&&n.isObject(o)){const o=t?i.getLastPosition():i.getFirstPosition(),r=n.getNearestSelectionRange(o,t?"forward":"backward");return r&&e.change(t=>{t.setSelection(r)}),!0}if(!i.isCollapsed)return;const r=this._getObjectElementNextToSelection(t);return r&&n.isObject(r)?(this._setSelectionOverElement(r),!0):void 0}_handleEnterKey(t){const e=this.editor.model,n=e.document.selection.getSelectedElement();if(i=n,o=e.schema,i&&o.isObject(i)&&!o.isInline(i))return e.change(i=>{let o=i.createPositionAt(n,t?"before":"after");const r=i.createElement("paragraph");if(e.schema.isBlock(n.parent)){const t=e.schema.findAllowedParent(o,r);o=i.split(o,t).position}i.insert(r,o),i.setSelection(r,"in")}),!0;var i,o}_setSelectionOverElement(t){this.editor.model.change(e=>{e.setSelection(e.createRangeOn(t))})}_getObjectElementNextToSelection(t){const e=this.editor.model,n=e.schema,i=e.document.selection,o=e.createSelection(i);e.modifySelection(o,{direction:t?"forward":"backward"});const r=t?o.focus.nodeBefore:o.focus.nodeAfter;return r&&n.isObject(r)?r:null}_clearPreviouslySelectedWidgets(t){for(const e of this._previouslySelected)t.removeClass("ck-widget_selected",e);this._previouslySelected.clear()}}function Yh(t,e){return!!e&&Array.from(t.getAncestors()).includes(e)}class Gh extends ld{refresh(){const t=this.editor.model.document.selection.getSelectedElement();this.isEnabled=Hu(t),Hu(t)&&t.hasAttribute("alt")?this.value=t.getAttribute("alt"):this.value=!1}execute(t){const e=this.editor.model,n=e.document.selection.getSelectedElement();e.change(e=>{e.setAttribute("alt",t.newValue,n)})}}class $h extends Mc{static get pluginName(){return"ImageTextAlternativeEditing"}init(){this.editor.commands.add("imageTextAlternative",new Gh(this.editor))}}n(49);class Qh extends Jc{constructor(t){super(t),this.set("text"),this.set("for"),this.id="ck-editor__label_"+dn();const e=this.bindTemplate;this.setTemplate({tag:"label",attributes:{class:["ck","ck-label"],id:this.id,for:e.to("for")},children:[{text:e.to("text")}]})}}n(51);class Kh extends Jc{constructor(t,e){super(t);const n="ck-labeled-field-view-"+dn(),i="ck-labeled-field-view-status-"+dn();this.fieldView=e(this,n,i),this.set("label"),this.set("isEnabled",!0),this.set("errorText",null),this.set("infoText",null),this.set("class"),this.labelView=this._createLabelView(n),this.statusView=this._createStatusView(i),this.bind("_statusText").to(this,"errorText",this,"infoText",(t,e)=>t||e);const o=this.bindTemplate;this.setTemplate({tag:"div",attributes:{class:["ck","ck-labeled-field-view",o.to("class"),o.if("isEnabled","ck-disabled",t=>!t)]},children:[this.labelView,this.fieldView,this.statusView]})}_createLabelView(t){const e=new Qh(this.locale);return e.for=t,e.bind("text").to(this,"label"),e}_createStatusView(t){const e=new Jc(this.locale),n=this.bindTemplate;return e.setTemplate({tag:"div",attributes:{class:["ck","ck-labeled-field-view__status",n.if("errorText","ck-labeled-field-view__status_error"),n.if("_statusText","ck-hidden",t=>!t)],id:t,role:n.if("errorText","alert")},children:[{text:n.to("_statusText")}]}),e}focus(){this.fieldView.focus()}}n(53);class Jh extends Jc{constructor(t){super(t),this.set("value"),this.set("id"),this.set("placeholder"),this.set("isReadOnly",!1),this.set("hasError",!1),this.set("ariaDescribedById");const e=this.bindTemplate;this.setTemplate({tag:"input",attributes:{type:"text",class:["ck","ck-input","ck-input-text",e.if("hasError","ck-error")],id:e.to("id"),placeholder:e.to("placeholder"),readonly:e.to("isReadOnly"),"aria-invalid":e.if("hasError",!0),"aria-describedby":e.to("ariaDescribedById")},on:{input:e.to("input")}})}render(){super.render();const t=t=>{this.element.value=t||0===t?t:""};t(this.value),this.on("change:value",(e,n,i)=>{t(i)})}select(){this.element.select()}focus(){this.element.focus()}}function Zh(t,e,n){const i=new Jh(t.locale);return i.set({id:e,ariaDescribedById:n}),i.bind("isReadOnly").to(t,"isEnabled",t=>!t),i.bind("hasError").to(t,"errorText",t=>!!t),i.on("input",()=>{t.errorText=null}),i}function Xh({view:t}){t.listenTo(t.element,"submit",(e,n)=>{n.preventDefault(),t.fire("submit")},{useCapture:!0})}var tf='',ef='';n(55);class nf extends Jc{constructor(t){super(t);const e=this.locale.t;this.focusTracker=new hl,this.keystrokes=new Ac,this.labeledInput=this._createLabeledInputView(),this.saveButtonView=this._createButton(e("Save"),tf,"ck-button-save"),this.saveButtonView.type="submit",this.cancelButtonView=this._createButton(e("Cancel"),ef,"ck-button-cancel","cancel"),this._focusables=new Ic,this._focusCycler=new bl({focusables:this._focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"shift + tab",focusNext:"tab"}}),this.setTemplate({tag:"form",attributes:{class:["ck","ck-text-alternative-form"],tabindex:"-1"},children:[this.labeledInput,this.saveButtonView,this.cancelButtonView]})}render(){super.render(),this.keystrokes.listenTo(this.element),Xh({view:this}),[this.labeledInput,this.saveButtonView,this.cancelButtonView].forEach(t=>{this._focusables.add(t),this.focusTracker.add(t.element)})}_createButton(t,e,n,i){const o=new ul(this.locale);return o.set({label:t,icon:e,tooltip:!0}),o.extendTemplate({attributes:{class:n}}),i&&o.delegate("execute").to(this,i),o}_createLabeledInputView(){const t=this.locale.t,e=new Kh(this.locale,Zh);return e.label=t("Text alternative"),e.fieldView.placeholder=t("Text alternative"),e}}function of(t){const e=t.editing.view,n=rl.defaultPositions;return{target:e.domConverter.viewToDom(e.document.selection.getSelectedElement()),positions:[n.northArrowSouth,n.northArrowSouthWest,n.northArrowSouthEast,n.southArrowNorth,n.southArrowNorthWest,n.southArrowNorthEast]}}class rf extends Mc{static get requires(){return[ml]}static get pluginName(){return"ImageTextAlternativeUI"}init(){this._createButton(),this._createForm()}destroy(){super.destroy(),this._form.destroy()}_createButton(){const t=this.editor,e=t.t;t.ui.componentFactory.add("imageTextAlternative",n=>{const i=t.commands.get("imageTextAlternative"),o=new ul(n);return o.set({label:e("Change image text alternative"),icon:'',tooltip:!0}),o.bind("isEnabled").to(i,"isEnabled"),this.listenTo(o,"execute",()=>{this._showForm()}),o})}_createForm(){const t=this.editor,e=t.editing.view.document;this._balloon=this.editor.plugins.get("ContextualBalloon"),this._form=new nf(t.locale),this._form.render(),this.listenTo(this._form,"submit",()=>{t.execute("imageTextAlternative",{newValue:this._form.labeledInput.fieldView.element.value}),this._hideForm(!0)}),this.listenTo(this._form,"cancel",()=>{this._hideForm(!0)}),this._form.keystrokes.set("Esc",(t,e)=>{this._hideForm(!0),e()}),this.listenTo(t.ui,"update",()=>{Uu(e.selection)?this._isVisible&&function(t){const e=t.plugins.get("ContextualBalloon");if(Uu(t.editing.view.document.selection)){const n=of(t);e.updatePosition(n)}}(t):this._hideForm(!0)}),El({emitter:this._form,activator:()=>this._isVisible,contextElements:[this._balloon.view.element],callback:()=>this._hideForm()})}_showForm(){if(this._isVisible)return;const t=this.editor,e=t.commands.get("imageTextAlternative"),n=this._form.labeledInput;this._isInBalloon||this._balloon.add({view:this._form,position:of(t)}),n.fieldView.value=n.fieldView.element.value=e.value||"",this._form.labeledInput.fieldView.select()}_hideForm(t){this._isInBalloon&&(this._form.focusTracker.isFocused&&this._form.saveButtonView.focus(),this._balloon.remove(this._form),t&&this.editor.editing.view.focus())}get _isVisible(){return this._balloon.visibleView===this._form}get _isInBalloon(){return this._balloon.hasView(this._form)}}class sf extends Mc{static get requires(){return[$h,rf]}static get pluginName(){return"ImageTextAlternative"}}n(57);class af extends Mc{static get requires(){return[Qu,qh,sf]}static get pluginName(){return"Image"}}class cf extends Jc{constructor(t){super(t),this.buttonView=new ul(t),this._fileInputView=new lf(t),this._fileInputView.bind("acceptedType").to(this),this._fileInputView.bind("allowMultipleFiles").to(this),this._fileInputView.delegate("done").to(this),this.setTemplate({tag:"span",attributes:{class:"ck-file-dialog-button"},children:[this.buttonView,this._fileInputView]}),this.buttonView.on("execute",()=>{this._fileInputView.open()})}focus(){this.buttonView.focus()}}class lf extends Jc{constructor(t){super(t),this.set("acceptedType"),this.set("allowMultipleFiles",!1);const e=this.bindTemplate;this.setTemplate({tag:"input",attributes:{class:["ck-hidden"],type:"file",tabindex:"-1",accept:e.to("acceptedType"),multiple:e.to("allowMultipleFiles")},on:{change:e.to(()=>{this.element&&this.element.files&&this.element.files.length&&this.fire("done",this.element.files),this.element.value=""})}})}open(){this.element.click()}}function df(t){const e=t.map(t=>t.replace("+","\\+"));return new RegExp(`^image\\/(${e.join("|")})$`)}class uf extends Mc{init(){const t=this.editor,e=t.t;t.ui.componentFactory.add("imageUpload",n=>{const i=new cf(n),o=t.commands.get("imageUpload"),r=t.config.get("image.upload.types"),s=df(r);return i.set({acceptedType:r.map(t=>"image/"+t).join(","),allowMultipleFiles:!0}),i.buttonView.set({label:e("Insert image"),icon:'',tooltip:!0}),i.buttonView.bind("isEnabled").to(o),i.on("done",(e,n)=>{const i=Array.from(n).filter(t=>s.test(t.type));i.length&&t.execute("imageUpload",{file:i})}),i})}}n(59),n(61),n(63);class hf extends Mc{constructor(t){super(t),this.placeholder="data:image/svg+xml;utf8,"+encodeURIComponent('')}init(){this.editor.editing.downcastDispatcher.on("attribute:uploadStatus:image",(...t)=>this.uploadStatusChange(...t))}uploadStatusChange(t,e,n){const i=this.editor,o=e.item,r=o.getAttribute("uploadId");if(!n.consumable.consume(e.item,t.name))return;const s=i.plugins.get(cu),a=r?e.attributeNewValue:null,c=this.placeholder,l=i.editing.mapper.toViewElement(o),d=n.writer;if("reading"==a)return ff(l,d),void mf(c,l,d);if("uploading"==a){const t=s.loaders.get(r);return ff(l,d),void(t?(gf(l,d),function(t,e,n,i){const o=function(t){const e=t.createUIElement("div",{class:"ck-progress-bar"});return t.setCustomProperty("progressBar",!0,e),e}(e);e.insert(e.createPositionAt(t,"end"),o),n.on("change:uploadedPercent",(t,e,n)=>{i.change(t=>{t.setStyle("width",n+"%",o)})})}(l,d,t,i.editing.view),function(t,e,n){if(n.data){const i=Yu(t);e.setAttribute("src",n.data,i)}}(l,d,t)):mf(c,l,d))}"complete"==a&&s.loaders.get(r)&&function(t,e,n){const i=e.createUIElement("div",{class:"ck-image-upload-complete-icon"});e.insert(e.createPositionAt(t,"end"),i),setTimeout(()=>{n.change(t=>t.remove(t.createRangeOn(i)))},3e3)}(l,d,i.editing.view),function(t,e){bf(t,e,"progressBar")}(l,d),gf(l,d),function(t,e){e.removeClass("ck-appear",t)}(l,d)}}function ff(t,e){t.hasClass("ck-appear")||e.addClass("ck-appear",t)}function mf(t,e,n){e.hasClass("ck-image-upload-placeholder")||n.addClass("ck-image-upload-placeholder",e);const i=Yu(e);i.getAttribute("src")!==t&&n.setAttribute("src",t,i),pf(e,"placeholder")||n.insert(n.createPositionAfter(i),function(t){const e=t.createUIElement("div",{class:"ck-upload-placeholder-loader"});return t.setCustomProperty("placeholder",!0,e),e}(n))}function gf(t,e){t.hasClass("ck-image-upload-placeholder")&&e.removeClass("ck-image-upload-placeholder",t),bf(t,e,"placeholder")}function pf(t,e){for(const n of t.getChildren())if(n.getCustomProperty(e))return n}function bf(t,e,n){const i=pf(t,n);i&&e.remove(e.createRangeOn(i))}class wf{constructor(t){this.document=t}createDocumentFragment(t){return new xo(this.document,t)}createElement(t,e,n){return new Oi(this.document,t,e,n)}createText(t){return new Rn(this.document,t)}clone(t,e=!1){return t._clone(e)}appendChild(t,e){return e._appendChild(t)}insertChild(t,e,n){return n._insertChild(t,e)}removeChildren(t,e,n){return n._removeChildren(t,e)}remove(t){const e=t.parent;return e?this.removeChildren(e.getChildIndex(t),1,e):[]}replace(t,e){const n=t.parent;if(n){const i=n.getChildIndex(t);return this.removeChildren(i,1,n),this.insertChild(i,e,n),!0}return!1}unwrapElement(t){const e=t.parent;if(e){const n=e.getChildIndex(t);this.remove(t),this.insertChild(n,t.getChildren(),e)}}rename(t,e){const n=new Oi(this.document,t,e.getAttributes(),e.getChildren());return this.replace(e,n)?n:null}setAttribute(t,e,n){n._setAttribute(t,e)}removeAttribute(t,e){e._removeAttribute(t)}addClass(t,e){e._addClass(t)}removeClass(t,e){e._removeClass(t)}setStyle(t,e,n){y(t)&&void 0===n&&(n=e),n._setStyle(t,e)}removeStyle(t,e){e._removeStyle(t)}setCustomProperty(t,e,n){n._setCustomProperty(t,e)}removeCustomProperty(t,e){return e._removeCustomProperty(t)}createPositionAt(t,e){return Zi._createAt(t,e)}createPositionAfter(t){return Zi._createAfter(t)}createPositionBefore(t){return Zi._createBefore(t)}createRange(t,e){return new Xi(t,e)}createRangeOn(t){return Xi._createOn(t)}createRangeIn(t){return Xi._createIn(t)}createSelection(t,e,n){return new no(t,e,n)}}class kf extends ld{refresh(){this.isEnabled=qu(this.editor.model)}execute(t){const e=this.editor,n=e.model,i=e.plugins.get(cu);n.change(e=>{const o=Array.isArray(t.file)?t.file:[t.file];for(const t of o)_f(e,n,i,t)})}}function _f(t,e,n,i){const o=n.createLoader(i);o&&Wu(t,e,{uploadId:o.id})}class vf extends Mc{static get requires(){return[cu,Nh,cd]}static get pluginName(){return"ImageUploadEditing"}constructor(t){super(t),t.config.define("image",{upload:{types:["jpeg","png","gif","bmp","webp","tiff"]}})}init(){const t=this.editor,e=t.model.document,n=t.model.schema,i=t.conversion,o=t.plugins.get(cu),r=df(t.config.get("image.upload.types"));n.extend("image",{allowAttributes:["uploadId","uploadStatus"]}),t.commands.add("imageUpload",new kf(t)),i.for("upcast").attributeToAttribute({view:{name:"img",key:"uploadId"},model:"uploadId"}),this.listenTo(t.editing.view.document,"clipboardInput",(e,n)=>{if(i=n.dataTransfer,Array.from(i.types).includes("text/html")&&""!==i.getData("text/html"))return;var i;const o=Array.from(n.dataTransfer.files).filter(t=>!!t&&r.test(t.type)),s=n.targetRanges.map(e=>t.editing.mapper.toModelRange(e));t.model.change(n=>{n.setSelection(s),o.length&&(e.stop(),t.model.enqueueChange("default",()=>{t.execute("imageUpload",{file:o})}))})}),this.listenTo(t.plugins.get(cd),"inputTransformation",(e,n)=>{const i=Array.from(t.editing.view.createRangeIn(n.content)).filter(t=>{return!(!(e=t.item).is("element","img")||!e.getAttribute("src"))&&(e.getAttribute("src").match(/^data:image\/\w+;base64,/g)||e.getAttribute("src").match(/^blob:/g))&&!t.item.getAttribute("uploadProcessed");var e}).map(t=>{return{promise:(e=t.item,new Promise((t,n)=>{const i=e.getAttribute("src");fetch(i).then(t=>t.blob()).then(e=>{const n=function(t,e){return t.type?t.type:e.match(/data:(image\/\w+);base64/)?e.match(/data:(image\/\w+);base64/)[1].toLowerCase():"image/jpeg"}(e,i),o=n.replace("image/",""),r=new File([e],"image."+o,{type:n});t(r)}).catch(n)})),imageElement:t.item};var e});if(!i.length)return;const r=new wf(t.editing.view.document);for(const t of i){r.setAttribute("uploadProcessed",!0,t.imageElement);const e=o.createLoader(t.promise);e&&(r.setAttribute("src","",t.imageElement),r.setAttribute("uploadId",e.id,t.imageElement))}}),t.editing.view.document.on("dragover",(t,e)=>{e.preventDefault()}),e.on("change",()=>{const n=e.differ.getChanges({includeChangesInGraveyard:!0});for(const e of n)if("insert"==e.type&&"$text"!=e.name){const n=e.position.nodeAfter,i="$graveyard"==e.position.root.rootName;for(const e of yf(t,n)){const t=e.getAttribute("uploadId");if(!t)continue;const n=o.loaders.get(t);n&&(i?n.abort():"idle"==n.status&&this._readAndUpload(n,e))}}})}_readAndUpload(t,e){const n=this.editor,i=n.model,o=n.locale.t,r=n.plugins.get(cu),s=n.plugins.get(Nh);return i.enqueueChange("transparent",t=>{t.setAttribute("uploadStatus","reading",e)}),t.read().then(()=>{const o=t.upload();if(ho.isSafari){const t=Yu(n.editing.mapper.toViewElement(e));n.editing.view.once("render",()=>{if(!t.parent)return;const e=n.editing.view.domConverter.mapViewToDom(t.parent);if(!e)return;const i=e.style.display;e.style.display="none",e._ckHack=e.offsetHeight,e.style.display=i})}return i.enqueueChange("transparent",t=>{t.setAttribute("uploadStatus","uploading",e)}),o}).then(t=>{i.enqueueChange("transparent",n=>{n.setAttributes({uploadStatus:"complete",src:t.default},e),this._parseAndSetSrcsetAttributeOnImage(t,e,n)}),a()}).catch(n=>{if("error"!==t.status&&"aborted"!==t.status)throw n;"error"==t.status&&n&&s.showWarning(n,{title:o("Upload failed"),namespace:"upload"}),a(),i.enqueueChange("transparent",t=>{t.remove(e)})});function a(){i.enqueueChange("transparent",t=>{t.removeAttribute("uploadId",e),t.removeAttribute("uploadStatus",e)}),r.destroyLoader(t)}}_parseAndSetSrcsetAttributeOnImage(t,e,n){let i=0;const o=Object.keys(t).filter(t=>{const e=parseInt(t,10);if(!isNaN(e))return i=Math.max(i,e),!0}).map(e=>`${t[e]} ${e}w`).join(", ");""!=o&&n.setAttribute("srcset",{data:o,width:i},e)}}function yf(t,e){return Array.from(t.model.createRangeOn(e)).filter(t=>t.item.is("image")).map(t=>t.item)}class xf extends Mc{static get pluginName(){return"ImageUpload"}static get requires(){return[vf,uf,hf]}}class Af extends ld{refresh(){const t=this.editor.model,e=xu(t.document.selection.getSelectedBlocks());this.value=!!e&&e.is("paragraph"),this.isEnabled=!!e&&Cf(e,t.schema)}execute(t={}){const e=this.editor.model,n=e.document;e.change(i=>{const o=(t.selection||n.selection).getSelectedBlocks();for(const t of o)!t.is("paragraph")&&Cf(t,e.schema)&&i.rename(t,"paragraph")})}}function Cf(t,e){return e.checkChild(t.parent,"paragraph")&&!e.isObject(t)}class Tf extends Mc{static get pluginName(){return"Paragraph"}init(){const t=this.editor,e=t.model,n=t.data;t.commands.add("paragraph",new Af(t)),e.schema.register("paragraph",{inheritAllFrom:"$block"}),t.conversion.elementToElement({model:"paragraph",view:"p"}),t.conversion.for("upcast").elementToElement({model:(t,e)=>Tf.paragraphLikeElements.has(t.name)?t.isEmpty?null:e.createElement("paragraph"):null,converterPriority:"low"}),n.upcastDispatcher.on("element",(t,e,n)=>{n.consumable.test(e.viewItem,{name:e.viewItem.name})&&Sf(e.viewItem,e.modelCursor,n.schema)&&Object.assign(e,Pf(e.viewItem,e.modelCursor,n))},{priority:"low"}),n.upcastDispatcher.on("text",(t,e,n)=>{e.modelRange||Sf(e.viewItem,e.modelCursor,n.schema)&&Object.assign(e,Pf(e.viewItem,e.modelCursor,n))},{priority:"lowest"}),e.document.registerPostFixer(t=>this._autoparagraphEmptyRoots(t)),t.data.on("ready",()=>{e.enqueueChange("transparent",t=>this._autoparagraphEmptyRoots(t))},{priority:"lowest"})}_autoparagraphEmptyRoots(t){const e=this.editor.model;for(const n of e.document.getRootNames()){const i=e.document.getRoot(n);if(i.isEmpty&&"$graveyard"!=i.rootName&&e.schema.checkChild(i,"paragraph"))return t.insertElement("paragraph",i),!0}}}function Pf(t,e,n){const i=n.writer.createElement("paragraph");return n.writer.insert(i,e),n.convertItem(t,n.writer.createPositionAt(i,0))}function Sf(t,e,n){const i=n.createContext(e);return!!n.checkChild(i,"paragraph")&&!!n.checkChild(i.push("paragraph"),t)}Tf.paragraphLikeElements=new Set(["blockquote","dd","div","dt","h1","h2","h3","h4","h5","h6","li","p","td"]);class Mf extends ld{constructor(t,e){super(t),this.modelElements=e}refresh(){const t=xu(this.editor.model.document.selection.getSelectedBlocks());this.value=!!t&&this.modelElements.includes(t.name)&&t.name,this.isEnabled=!!t&&this.modelElements.some(e=>Ef(t,e,this.editor.model.schema))}execute(t){const e=this.editor.model,n=e.document,i=t.value;e.change(t=>{const o=Array.from(n.selection.getSelectedBlocks()).filter(t=>Ef(t,i,e.schema));for(const e of o)e.is(i)||t.rename(e,i)})}}function Ef(t,e,n){return n.checkChild(t.parent,e)&&!n.isObject(t)}class If extends Mc{static get pluginName(){return"HeadingEditing"}constructor(t){super(t),t.config.define("heading",{options:[{model:"paragraph",title:"Paragraph",class:"ck-heading_paragraph"},{model:"heading1",view:"h2",title:"Heading 1",class:"ck-heading_heading1"},{model:"heading2",view:"h3",title:"Heading 2",class:"ck-heading_heading2"},{model:"heading3",view:"h4",title:"Heading 3",class:"ck-heading_heading3"}]})}static get requires(){return[Tf]}init(){const t=this.editor,e=t.config.get("heading.options"),n=[];for(const i of e)"paragraph"!==i.model&&(t.model.schema.register(i.model,{inheritAllFrom:"$block"}),t.conversion.elementToElement(i),n.push(i.model));this._addDefaultH1Conversion(t),t.commands.add("heading",new Mf(t,n))}afterInit(){const t=this.editor,e=t.commands.get("enter"),n=t.config.get("heading.options");e&&this.listenTo(e,"afterExecute",(e,i)=>{const o=t.model.document.selection.getFirstPosition().parent;n.some(t=>o.is(t.model))&&!o.is("paragraph")&&0===o.childCount&&i.writer.rename(o,"paragraph")})}_addDefaultH1Conversion(t){t.conversion.for("upcast").elementToElement({model:"heading1",view:"h1",converterPriority:un.get("low")+1})}}class Nf{constructor(t,e){e&&ji(this,e),t&&this.set(t)}}xn(Nf,Ui);n(11);class Of extends Mc{init(){const t=this.editor,e=t.t,n=function(t){const e=t.t,n={Paragraph:e("Paragraph"),"Heading 1":e("Heading 1"),"Heading 2":e("Heading 2"),"Heading 3":e("Heading 3"),"Heading 4":e("Heading 4"),"Heading 5":e("Heading 5"),"Heading 6":e("Heading 6")};return t.config.get("heading.options").map(t=>{const e=n[t.title];return e&&e!=t.title&&(t.title=e),t})}(t),i=e("Choose heading"),o=e("Heading");t.ui.componentFactory.add("heading",e=>{const r={},s=new An,a=t.commands.get("heading"),c=t.commands.get("paragraph"),l=[a];for(const t of n){const e={type:"button",model:new Nf({label:t.title,class:t.class,withText:!0})};"paragraph"===t.model?(e.model.bind("isOn").to(c,"value"),e.model.set("commandName","paragraph"),l.push(c)):(e.model.bind("isOn").to(a,"value",e=>e===t.model),e.model.set({commandName:"heading",commandValue:t.model})),s.add(e),r[t.model]=t.title}const d=Il(e);return Nl(d,s),d.buttonView.set({isOn:!1,withText:!0,tooltip:o}),d.extendTemplate({attributes:{class:["ck-heading-dropdown"]}}),d.bind("isEnabled").toMany(l,"isEnabled",(...t)=>t.some(t=>t)),d.buttonView.bind("label").to(a,"value",c,"value",(t,e)=>{const n=t||e&&"paragraph";return r[n]?r[n]:i}),this.listenTo(d,"execute",e=>{t.execute(e.source.commandName,e.source.commandValue?{value:e.source.commandValue}:void 0),t.editing.view.focus()}),d})}}function Rf(t){for(const e of t.getChildren())if(e&&e.is("caption"))return e;return null}function Df(t){const e=t.parent;return"figcaption"==t.name&&e&&"figure"==e.name&&e.hasClass("image")?{name:!0}:null}class Lf extends Mc{static get pluginName(){return"ImageCaptionEditing"}init(){const t=this.editor,e=t.editing.view,n=t.model.schema,i=t.data,o=t.editing,r=t.t;n.register("caption",{allowIn:"image",allowContentOf:"$block",isLimit:!0}),t.model.document.registerPostFixer(t=>this._insertMissingModelCaptionElement(t)),t.conversion.for("upcast").elementToElement({view:Df,model:"caption"});i.downcastDispatcher.on("insert:caption",jf(t=>t.createContainerElement("figcaption"),!1));const s=function(t,e){return n=>{const i=n.createEditableElement("figcaption");return n.setCustomProperty("imageCaption",!0,i),Wl({view:t,element:i,text:e}),zu(i,n)}}(e,r("Enter image caption"));o.downcastDispatcher.on("insert:caption",jf(s)),o.downcastDispatcher.on("insert",this._fixCaptionVisibility(t=>t.item),{priority:"high"}),o.downcastDispatcher.on("remove",this._fixCaptionVisibility(t=>t.position.parent),{priority:"high"}),e.document.registerPostFixer(t=>this._updateCaptionVisibility(t))}_updateCaptionVisibility(t){const e=this.editor.editing.mapper,n=this._lastSelectedCaption;let i;const o=this.editor.model.document.selection,r=o.getSelectedElement();if(r&&r.is("image")){const t=Rf(r);i=e.toViewElement(t)}const s=Vf(o.getFirstPosition().parent);if(s&&(i=e.toViewElement(s)),i)return n?(n===i||(zf(n,t),this._lastSelectedCaption=i),Bf(i,t)):(this._lastSelectedCaption=i,Bf(i,t));if(n){const e=zf(n,t);return this._lastSelectedCaption=null,e}return!1}_fixCaptionVisibility(t){return(e,n,i)=>{const o=Vf(t(n)),r=this.editor.editing.mapper,s=i.writer;if(o){const t=r.toViewElement(o);t&&(o.childCount?s.removeClass("ck-hidden",t):s.addClass("ck-hidden",t))}}}_insertMissingModelCaptionElement(t){const e=this.editor.model,n=e.document.differ.getChanges(),i=[];for(const t of n)if("insert"==t.type&&"$text"!=t.name){const n=t.position.nodeAfter;if(n.is("image")&&!Rf(n)&&i.push(n),!n.is("image")&&n.childCount)for(const t of e.createRangeIn(n).getItems())t.is("image")&&!Rf(t)&&i.push(t)}for(const e of i)t.appendElement("caption",e);return!!i.length}}function jf(t,e=!0){return(n,i,o)=>{const r=i.item;if((r.childCount||e)&&Hu(r.parent)){if(!o.consumable.consume(i.item,"insert"))return;const e=o.mapper.toViewElement(i.range.start.parent),n=t(o.writer),s=o.writer;r.childCount||s.addClass("ck-hidden",n),function(t,e,n,i){const o=i.writer.createPositionAt(n,"end");i.writer.insert(o,t),i.mapper.bindElements(e,t)}(n,i.item,e,o)}}}function Vf(t){const e=t.getAncestors({includeSelf:!0}).find(t=>"caption"==t.name);return e&&e.parent&&"image"==e.parent.name?e:null}function zf(t,e){return!t.childCount&&!t.hasClass("ck-hidden")&&(e.addClass("ck-hidden",t),!0)}function Bf(t,e){return!!t.hasClass("ck-hidden")&&(e.removeClass("ck-hidden",t),!0)}n(66);class Ff extends ld{constructor(t,e){super(t),this.defaultStyle=!1,this.styles=e.reduce((t,e)=>(t[e.name]=e,e.isDefault&&(this.defaultStyle=e.name),t),{})}refresh(){const t=this.editor.model.document.selection.getSelectedElement();if(this.isEnabled=Hu(t),t)if(t.hasAttribute("imageStyle")){const e=t.getAttribute("imageStyle");this.value=!!this.styles[e]&&e}else this.value=this.defaultStyle;else this.value=!1}execute(t){const e=t.value,n=this.editor.model,i=n.document.selection.getSelectedElement();n.change(t=>{this.styles[e].isDefault?t.removeAttribute("imageStyle",i):t.setAttribute("imageStyle",e,i)})}}function Uf(t,e){for(const n of e)if(n.name===t)return n}var Hf='',Wf='',qf='',Yf='';const Gf={full:{name:"full",title:"Full size image",icon:Hf,isDefault:!0},side:{name:"side",title:"Side image",icon:Yf,className:"image-style-side"},alignLeft:{name:"alignLeft",title:"Left aligned image",icon:Wf,className:"image-style-align-left"},alignCenter:{name:"alignCenter",title:"Centered image",icon:qf,className:"image-style-align-center"},alignRight:{name:"alignRight",title:"Right aligned image",icon:Yf,className:"image-style-align-right"}},$f={full:Hf,left:Wf,right:Yf,center:qf};function Qf(t=[]){return t.map(Kf)}function Kf(t){if("string"==typeof t){const e=t;Gf[e]?t=Object.assign({},Gf[e]):(console.warn(Object(hn.a)("image-style-not-found: There is no such image style of given name."),{name:e}),t={name:e})}else if(Gf[t.name]){const e=Gf[t.name],n=Object.assign({},t);for(const i in e)t.hasOwnProperty(i)||(n[i]=e[i]);t=n}return"string"==typeof t.icon&&$f[t.icon]&&(t.icon=$f[t.icon]),t}class Jf extends Mc{static get pluginName(){return"ImageStyleEditing"}init(){const t=this.editor,e=t.model.schema,n=t.data,i=t.editing;t.config.define("image.styles",["full","side"]);const o=Qf(t.config.get("image.styles"));e.extend("image",{allowAttributes:"imageStyle"});const r=function(t){return(e,n,i)=>{if(!i.consumable.consume(n.item,e.name))return;const o=Uf(n.attributeNewValue,t),r=Uf(n.attributeOldValue,t),s=i.mapper.toViewElement(n.item),a=i.writer;r&&a.removeClass(r.className,s),o&&a.addClass(o.className,s)}}(o);i.downcastDispatcher.on("attribute:imageStyle:image",r),n.downcastDispatcher.on("attribute:imageStyle:image",r),n.upcastDispatcher.on("element:figure",function(t){const e=t.filter(t=>!t.isDefault);return(t,n,i)=>{if(!n.modelRange)return;const o=n.viewItem,r=xu(n.modelRange.getItems());if(i.schema.checkAttribute(r,"imageStyle"))for(const t of e)i.consumable.consume(o,{classes:t.className})&&i.writer.setAttribute("imageStyle",t.name,r)}}(o),{priority:"low"}),t.commands.add("imageStyle",new Ff(t,o))}}n(68);class Zf extends Mc{static get pluginName(){return"ImageStyleUI"}get localizedDefaultStylesTitles(){const t=this.editor.t;return{"Full size image":t("Full size image"),"Side image":t("Side image"),"Left aligned image":t("Left aligned image"),"Centered image":t("Centered image"),"Right aligned image":t("Right aligned image")}}init(){const t=function(t,e){for(const n of t)e[n.title]&&(n.title=e[n.title]);return t}(Qf(this.editor.config.get("image.styles")),this.localizedDefaultStylesTitles);for(const e of t)this._createButton(e)}_createButton(t){const e=this.editor,n="imageStyle:"+t.name;e.ui.componentFactory.add(n,n=>{const i=e.commands.get("imageStyle"),o=new ul(n);return o.set({label:t.title,icon:t.icon,tooltip:!0,isToggleable:!0}),o.bind("isEnabled").to(i,"isEnabled"),o.bind("isOn").to(i,"value",e=>e===t.name),this.listenTo(o,"execute",()=>{e.execute("imageStyle",{value:t.name}),e.editing.view.focus()}),o})}}class Xf extends Mc{static get requires(){return[ml]}static get pluginName(){return"WidgetToolbarRepository"}init(){const t=this.editor;if(t.plugins.has("BalloonToolbar")){const e=t.plugins.get("BalloonToolbar");this.listenTo(e,"show",e=>{(function(t){const e=t.getSelectedElement();return!(!e||!Lu(e))})(t.editing.view.document.selection)&&e.stop()},{priority:"high"})}this._toolbarDefinitions=new Map,this._balloon=this.editor.plugins.get("ContextualBalloon"),this.on("change:isEnabled",()=>{this._updateToolbarsVisibility()}),this.listenTo(t.ui,"update",()=>{this._updateToolbarsVisibility()}),this.listenTo(t.ui.focusTracker,"change:isFocused",()=>{this._updateToolbarsVisibility()},{priority:"low"})}destroy(){super.destroy();for(const t of this._toolbarDefinitions.values())t.view.destroy()}register(t,{ariaLabel:e,items:n,getRelatedElement:i,balloonClassName:o="ck-toolbar-container"}){const r=this.editor,s=r.t,a=new Ol(r.locale);if(a.ariaLabel=e||s("Widget toolbar"),this._toolbarDefinitions.has(t))throw new hn.b("widget-toolbar-duplicated: Toolbar with the given id was already added.",this,{toolbarId:t});a.fillFromConfig(n,r.ui.componentFactory),this._toolbarDefinitions.set(t,{view:a,getRelatedElement:i,balloonClassName:o})}_updateToolbarsVisibility(){let t=0,e=null,n=null;for(const i of this._toolbarDefinitions.values()){const o=i.getRelatedElement(this.editor.editing.view.document.selection);if(this.isEnabled&&o)if(this.editor.ui.focusTracker.isFocused){const r=o.getAncestors().length;r>t&&(t=r,e=o,n=i)}else this._isToolbarVisible(i)&&this._hideToolbar(i);else this._isToolbarInBalloon(i)&&this._hideToolbar(i)}n&&this._showToolbar(n,e)}_hideToolbar(t){this._balloon.remove(t.view),this.stopListening(this._balloon,"change:visibleView")}_showToolbar(t,e){this._isToolbarVisible(t)?tm(this.editor,e):this._isToolbarInBalloon(t)||(this._balloon.add({view:t.view,position:em(this.editor,e),balloonClassName:t.balloonClassName}),this.listenTo(this._balloon,"change:visibleView",()=>{for(const t of this._toolbarDefinitions.values())if(this._isToolbarVisible(t)){const e=t.getRelatedElement(this.editor.editing.view.document.selection);tm(this.editor,e)}}))}_isToolbarVisible(t){return this._balloon.visibleView===t.view}_isToolbarInBalloon(t){return this._balloon.hasView(t.view)}}function tm(t,e){const n=t.plugins.get("ContextualBalloon"),i=em(t,e);n.updatePosition(i)}function em(t,e){const n=t.editing.view,i=rl.defaultPositions;return{target:n.domConverter.mapViewToDom(e),positions:[i.northArrowSouth,i.northArrowSouthWest,i.northArrowSouthEast,i.southArrowNorth,i.southArrowNorthWest,i.southArrowNorthEast]}}class nm extends ld{constructor(t){super(t),this._childCommands=[]}refresh(){}execute(...t){this._getFirstEnabledCommand().execute(t)}registerChildCommand(t){this._childCommands.push(t),t.on("change:isEnabled",()=>this._checkEnabled()),this._checkEnabled()}_checkEnabled(){this.isEnabled=!!this._getFirstEnabledCommand()}_getFirstEnabledCommand(){return this._childCommands.find(t=>t.isEnabled)}}class im extends Mc{static get pluginName(){return"IndentEditing"}init(){const t=this.editor;t.commands.add("indent",new nm(t)),t.commands.add("outdent",new nm(t))}}var om='',rm='';class sm extends Mc{static get pluginName(){return"IndentUI"}init(){const t=this.editor,e=t.locale,n=t.t,i="ltr"==e.uiLanguageDirection?om:rm,o="ltr"==e.uiLanguageDirection?rm:om;this._defineButton("indent",n("Increase indent"),i),this._defineButton("outdent",n("Decrease indent"),o)}_defineButton(t,e,n){const i=this.editor;i.ui.componentFactory.add(t,o=>{const r=i.commands.get(t),s=new ul(o);return s.set({label:e,icon:n,tooltip:!0}),s.bind("isOn","isEnabled").to(r,"value","isEnabled"),this.listenTo(s,"execute",()=>{i.execute(t),i.editing.view.focus()}),s})}}class am extends Nr{constructor(t){super(t),this.domEventType="click"}onDomEvent(t){this.fire(t.type,t)}}n(70);class cm extends Jc{constructor(t,e){super(t);const n=t.t;this.focusTracker=new hl,this.keystrokes=new Ac,this.urlInputView=this._createUrlInput(),this.saveButtonView=this._createButton(n("Save"),tf,"ck-button-save"),this.saveButtonView.type="submit",this.cancelButtonView=this._createButton(n("Cancel"),ef,"ck-button-cancel","cancel"),this._manualDecoratorSwitches=this._createManualDecoratorSwitches(e),this.children=this._createFormChildren(e.manualDecorators),this._focusables=new Ic,this._focusCycler=new bl({focusables:this._focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"shift + tab",focusNext:"tab"}});const i=["ck","ck-link-form"];e.manualDecorators.length&&i.push("ck-link-form_layout-vertical"),this.setTemplate({tag:"form",attributes:{class:i,tabindex:"-1"},children:this.children})}getDecoratorSwitchesState(){return Array.from(this._manualDecoratorSwitches).reduce((t,e)=>(t[e.name]=e.isOn,t),{})}render(){super.render(),Xh({view:this}),[this.urlInputView,...this._manualDecoratorSwitches,this.saveButtonView,this.cancelButtonView].forEach(t=>{this._focusables.add(t),this.focusTracker.add(t.element)}),this.keystrokes.listenTo(this.element)}focus(){this._focusCycler.focusFirst()}_createUrlInput(){const t=this.locale.t,e=new Kh(this.locale,Zh);return e.label=t("Link URL"),e.fieldView.placeholder="https://example.com",e}_createButton(t,e,n,i){const o=new ul(this.locale);return o.set({label:t,icon:e,tooltip:!0}),o.extendTemplate({attributes:{class:n}}),i&&o.delegate("execute").to(this,i),o}_createManualDecoratorSwitches(t){const e=this.createCollection();for(const n of t.manualDecorators){const i=new Ml(this.locale);i.set({name:n.id,label:n.label,withText:!0}),i.bind("isOn").toMany([n,t],"value",(t,e)=>void 0===e&&void 0===t?n.defaultValue:t),i.on("execute",()=>{n.set("value",!i.isOn)}),e.add(i)}return e}_createFormChildren(t){const e=this.createCollection();if(e.add(this.urlInputView),t.length){const t=new Jc;t.setTemplate({tag:"ul",children:this._manualDecoratorSwitches.map(t=>({tag:"li",children:[t],attributes:{class:["ck","ck-list__item"]}})),attributes:{class:["ck","ck-reset","ck-list"]}}),e.add(t)}return e.add(this.saveButtonView),e.add(this.cancelButtonView),e}}n(72);class lm extends Jc{constructor(t){super(t);const e=t.t;this.focusTracker=new hl,this.keystrokes=new Ac,this.previewButtonView=this._createPreviewButton(),this.unlinkButtonView=this._createButton(e("Unlink"),'',"unlink"),this.editButtonView=this._createButton(e("Edit link"),'',"edit"),this.set("href"),this._focusables=new Ic,this._focusCycler=new bl({focusables:this._focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"shift + tab",focusNext:"tab"}}),this.setTemplate({tag:"div",attributes:{class:["ck","ck-link-actions"],tabindex:"-1"},children:[this.previewButtonView,this.editButtonView,this.unlinkButtonView]})}render(){super.render(),[this.previewButtonView,this.editButtonView,this.unlinkButtonView].forEach(t=>{this._focusables.add(t),this.focusTracker.add(t.element)}),this.keystrokes.listenTo(this.element)}focus(){this._focusCycler.focusFirst()}_createButton(t,e,n){const i=new ul(this.locale);return i.set({label:t,icon:e,tooltip:!0}),i.delegate("execute").to(this,n),i}_createPreviewButton(){const t=new ul(this.locale),e=this.bindTemplate,n=this.t;return t.set({withText:!0,tooltip:n("Open link in new tab")}),t.extendTemplate({attributes:{class:["ck","ck-link-actions__preview"],href:e.to("href",t=>t&&vh(t)),target:"_blank",rel:"noopener noreferrer"}}),t.bind("label").to(this,"href",t=>t||n("This link has no URL")),t.bind("isEnabled").to(this,"href",t=>!!t),t.template.tag="a",t.template.eventListeners={},t}}class dm extends Mc{static get requires(){return[ml]}static get pluginName(){return"LinkUI"}init(){const t=this.editor;t.editing.view.addObserver(am),this.actionsView=this._createActionsView(),this.formView=this._createFormView(),this._balloon=t.plugins.get(ml),this._createToolbarLinkButton(),this._enableUserBalloonInteractions()}destroy(){super.destroy(),this.formView.destroy()}_createActionsView(){const t=this.editor,e=new lm(t.locale),n=t.commands.get("link"),i=t.commands.get("unlink");return e.bind("href").to(n,"value"),e.editButtonView.bind("isEnabled").to(n),e.unlinkButtonView.bind("isEnabled").to(i),this.listenTo(e,"edit",()=>{this._addFormView()}),this.listenTo(e,"unlink",()=>{t.execute("unlink"),this._hideUI()}),e.keystrokes.set("Esc",(t,e)=>{this._hideUI(),e()}),e.keystrokes.set("Ctrl+K",(t,e)=>{this._addFormView(),e()}),e}_createFormView(){const t=this.editor,e=t.commands.get("link"),n=new cm(t.locale,e);return n.urlInputView.fieldView.bind("value").to(e,"value"),n.urlInputView.bind("isReadOnly").to(e,"isEnabled",t=>!t),n.saveButtonView.bind("isEnabled").to(e),this.listenTo(n,"submit",()=>{t.execute("link",n.urlInputView.fieldView.element.value,n.getDecoratorSwitchesState()),this._closeFormView()}),this.listenTo(n,"cancel",()=>{this._closeFormView()}),n.keystrokes.set("Esc",(t,e)=>{this._closeFormView(),e()}),n}_createToolbarLinkButton(){const t=this.editor,e=t.commands.get("link"),n=t.t;t.keystrokes.set("Ctrl+K",(t,e)=>{e(),this._showUI(!0)}),t.ui.componentFactory.add("link",t=>{const i=new ul(t);return i.isEnabled=!0,i.label=n("Link"),i.icon='',i.keystroke="Ctrl+K",i.tooltip=!0,i.isToggleable=!0,i.bind("isEnabled").to(e,"isEnabled"),i.bind("isOn").to(e,"value",t=>!!t),this.listenTo(i,"execute",()=>this._showUI(!0)),i})}_enableUserBalloonInteractions(){const t=this.editor.editing.view.document;this.listenTo(t,"click",()=>{this._getSelectedLinkElement()&&this._showUI()}),this.editor.keystrokes.set("Tab",(t,e)=>{this._areActionsVisible&&!this.actionsView.focusTracker.isFocused&&(this.actionsView.focus(),e())},{priority:"high"}),this.editor.keystrokes.set("Esc",(t,e)=>{this._isUIVisible&&(this._hideUI(),e())}),El({emitter:this.formView,activator:()=>this._isUIInPanel,contextElements:[this._balloon.view.element],callback:()=>this._hideUI()})}_addActionsView(){this._areActionsInPanel||this._balloon.add({view:this.actionsView,position:this._getBalloonPositionData()})}_addFormView(){if(this._isFormInPanel)return;const t=this.editor.commands.get("link");this._balloon.add({view:this.formView,position:this._getBalloonPositionData()}),this._balloon.visibleView===this.formView&&this.formView.urlInputView.fieldView.select(),this.formView.urlInputView.fieldView.element.value=t.value||""}_closeFormView(){const t=this.editor.commands.get("link");t.restoreManualDecoratorStates(),void 0!==t.value?this._removeFormView():this._hideUI()}_removeFormView(){this._isFormInPanel&&(this.formView.saveButtonView.focus(),this._balloon.remove(this.formView),this.editor.editing.view.focus())}_showUI(t=!1){this._getSelectedLinkElement()?(this._areActionsVisible?this._addFormView():this._addActionsView(),t&&this._balloon.showStack("main")):(this._addActionsView(),t&&this._balloon.showStack("main"),this._addFormView()),this._startUpdatingUI()}_hideUI(){if(!this._isUIInPanel)return;const t=this.editor;this.stopListening(t.ui,"update"),this.stopListening(this._balloon,"change:visibleView"),t.editing.view.focus(),this._removeFormView(),this._balloon.remove(this.actionsView)}_startUpdatingUI(){const t=this.editor,e=t.editing.view.document;let n=this._getSelectedLinkElement(),i=r();const o=()=>{const t=this._getSelectedLinkElement(),e=r();n&&!t||!n&&e!==i?this._hideUI():this._isUIVisible&&this._balloon.updatePosition(this._getBalloonPositionData()),n=t,i=e};function r(){return e.selection.focus.getAncestors().reverse().find(t=>t.is("element"))}this.listenTo(t.ui,"update",o),this.listenTo(this._balloon,"change:visibleView",o)}get _isFormInPanel(){return this._balloon.hasView(this.formView)}get _areActionsInPanel(){return this._balloon.hasView(this.actionsView)}get _areActionsVisible(){return this._balloon.visibleView===this.actionsView}get _isUIInPanel(){return this._isFormInPanel||this._areActionsInPanel}get _isUIVisible(){return this._balloon.visibleView==this.formView||this._areActionsVisible}_getBalloonPositionData(){const t=this.editor.editing.view,e=t.document,n=this._getSelectedLinkElement();return{target:n?t.domConverter.mapViewToDom(n):t.domConverter.viewRangeToDom(e.selection.getFirstRange())}}_getSelectedLinkElement(){const t=this.editor.editing.view,e=t.document.selection;if(e.isCollapsed)return um(e.getFirstPosition());{const n=e.getFirstRange().getTrimmed(),i=um(n.start),o=um(n.end);return i&&i==o&&t.createRangeIn(i).getTrimmed().isEqual(n)?i:null}}}function um(t){return t.getAncestors().find(t=>{return(e=t).is("attributeElement")&&!!e.getCustomProperty("link");var e})}class hm extends ld{constructor(t,e){super(t),this.type=e}refresh(){this.value=this._getValue(),this.isEnabled=this._checkEnabled()}execute(){const t=this.editor.model,e=t.document,n=Array.from(e.selection.getSelectedBlocks()).filter(e=>mm(e,t.schema)),i=!0===this.value;t.change(t=>{if(i){let e=n[n.length-1].nextSibling,i=Number.POSITIVE_INFINITY,o=[];for(;e&&"listItem"==e.name&&0!==e.getAttribute("listIndent");){const t=e.getAttribute("listIndent");t=n;)r>o.getAttribute("listIndent")&&(r=o.getAttribute("listIndent")),o.getAttribute("listIndent")==r&&t[e?"unshift":"push"](o),o=o[e?"previousSibling":"nextSibling"]}}function mm(t,e){return e.checkChild(t.parent,"listItem")&&!e.isObject(t)}class gm extends ld{constructor(t,e){super(t),this._indentBy="forward"==e?1:-1}refresh(){this.isEnabled=this._checkEnabled()}execute(){const t=this.editor.model,e=t.document;let n=Array.from(e.selection.getSelectedBlocks());t.change(t=>{const e=n[n.length-1];let i=e.nextSibling;for(;i&&"listItem"==i.name&&i.getAttribute("listIndent")>e.getAttribute("listIndent");)n.push(i),i=i.nextSibling;this._indentBy<0&&(n=n.reverse());for(const e of n){const n=e.getAttribute("listIndent")+this._indentBy;n<0?t.rename(e,"paragraph"):t.setAttribute("listIndent",n,e)}})}_checkEnabled(){const t=xu(this.editor.model.document.selection.getSelectedBlocks());if(!t||!t.is("listItem"))return!1;if(this._indentBy>0){const e=t.getAttribute("listIndent"),n=t.getAttribute("listType");let i=t.previousSibling;for(;i&&i.is("listItem")&&i.getAttribute("listIndent")>=e;){if(i.getAttribute("listIndent")==e)return i.getAttribute("listType")==n;i=i.previousSibling}return!1}return!0}}function pm(t,e){const n=e.mapper,i=e.writer,o="numbered"==t.getAttribute("listType")?"ol":"ul",r=function(t){const e=t.createContainerElement("li");return e.getFillerOffset=ym,e}(i),s=i.createContainerElement(o,null);return i.insert(i.createPositionAt(s,0),r),n.bindElements(t,r),r}function bm(t,e,n,i){const o=e.parent,r=n.mapper,s=n.writer;let a=r.toViewPosition(i.createPositionBefore(t));const c=_m(t.previousSibling,{sameIndent:!0,smallerIndent:!0,listIndent:t.getAttribute("listIndent")}),l=t.previousSibling;if(c&&c.getAttribute("listIndent")==t.getAttribute("listIndent")){const t=r.toViewElement(c);a=s.breakContainer(s.createPositionAfter(t))}else a=l&&"listItem"==l.name?r.toViewPosition(i.createPositionAt(l,"end")):r.toViewPosition(i.createPositionBefore(t));if(a=km(a),s.insert(a,o),l&&"listItem"==l.name){const t=r.toViewElement(l),n=s.createRange(s.createPositionAt(t,0),a).getWalker({ignoreElementEnd:!0});for(const t of n)if(t.item.is("li")){const i=s.breakContainer(s.createPositionBefore(t.item)),o=t.item.parent,r=s.createPositionAt(e,"end");wm(s,r.nodeBefore,r.nodeAfter),s.move(s.createRangeOn(o),r),n.position=i}}else{const n=o.nextSibling;if(n&&(n.is("ul")||n.is("ol"))){let i=null;for(const e of n.getChildren()){const n=r.toModelElement(e);if(!(n&&n.getAttribute("listIndent")>t.getAttribute("listIndent")))break;i=e}i&&(s.breakContainer(s.createPositionAfter(i)),s.move(s.createRangeOn(i.parent),s.createPositionAt(e,"end")))}}wm(s,o,o.nextSibling),wm(s,o.previousSibling,o)}function wm(t,e,n){return!e||!n||"ul"!=e.name&&"ol"!=e.name||e.name!=n.name||e.getAttribute("class")!==n.getAttribute("class")?null:t.mergeContainers(t.createPositionAfter(e))}function km(t){return t.getLastMatchingPosition(t=>t.item.is("uiElement"))}function _m(t,e){const n=!!e.sameIndent,i=!!e.smallerIndent,o=e.listIndent;let r=t;for(;r&&"listItem"==r.name;){const t=r.getAttribute("listIndent");if(n&&o==t||i&&o>t)return r;r=r.previousSibling}return null}function vm(t,e,n,i){t.ui.componentFactory.add(e,o=>{const r=t.commands.get(e),s=new ul(o);return s.set({label:n,icon:i,tooltip:!0,isToggleable:!0}),s.bind("isOn","isEnabled").to(r,"value","isEnabled"),s.on("execute",()=>{t.execute(e),t.editing.view.focus()}),s})}function ym(){const t=!this.isEmpty&&("ul"==this.getChild(0).name||"ol"==this.getChild(0).name);return this.isEmpty||t?0:Li.call(this)}function xm(t){return(e,n,i)=>{const o=i.consumable;if(!o.test(n.item,"insert")||!o.test(n.item,"attribute:listType")||!o.test(n.item,"attribute:listIndent"))return;o.consume(n.item,"insert"),o.consume(n.item,"attribute:listType"),o.consume(n.item,"attribute:listIndent");const r=n.item;bm(r,pm(r,i),i,t)}}function Am(t,e,n){if(!n.consumable.consume(e.item,"attribute:listType"))return;const i=n.mapper.toViewElement(e.item),o=n.writer;o.breakContainer(o.createPositionBefore(i)),o.breakContainer(o.createPositionAfter(i));const r=i.parent,s="numbered"==e.attributeNewValue?"ol":"ul";o.rename(s,r)}function Cm(t,e,n){const i=n.mapper.toViewElement(e.item).parent,o=n.writer;wm(o,i,i.nextSibling),wm(o,i.previousSibling,i);for(const t of e.item.getChildren())n.consumable.consume(t,"insert")}function Tm(t,e,n){if("listItem"!=e.item.name){let t=n.mapper.toViewPosition(e.range.start);const i=n.writer,o=[];for(;("ul"==t.parent.name||"ol"==t.parent.name)&&(t=i.breakContainer(t),"li"==t.parent.name);){const e=t,n=i.createPositionAt(t.parent,"end");if(!e.isEqual(n)){const t=i.remove(i.createRange(e,n));o.push(t)}t=i.createPositionAfter(t.parent)}if(o.length>0){for(let e=0;e0){const e=wm(i,n,n.nextSibling);e&&e.parent==n&&t.offset--}}wm(i,t.nodeBefore,t.nodeAfter)}}}function Pm(t,e,n){const i=n.mapper.toViewPosition(e.position),o=i.nodeBefore,r=i.nodeAfter;wm(n.writer,o,r)}function Sm(t,e,n){if(n.consumable.consume(e.viewItem,{name:!0})){const t=n.writer,i=t.createElement("listItem"),o=function(t){let e=0,n=t.parent;for(;n;){if(n.is("li"))e++;else{const t=n.previousSibling;t&&t.is("li")&&e++}n=n.parent}return e}(e.viewItem);t.setAttribute("listIndent",o,i);const r=e.viewItem.parent&&"ol"==e.viewItem.parent.name?"numbered":"bulleted";t.setAttribute("listType",r,i);const s=n.splitToAllowedParent(i,e.modelCursor);if(!s)return;t.insert(i,s.position);const a=function(t,e,n){const{writer:i,schema:o}=n;let r=i.createPositionAfter(t);for(const s of e)if("ul"==s.name||"ol"==s.name)r=n.convertItem(s,r).modelCursor;else{const e=n.convertItem(s,i.createPositionAt(t,"end")),a=e.modelRange.start.nodeAfter;a&&a.is("element")&&!o.checkChild(t,a.name)&&(t=e.modelCursor.parent.is("listItem")?e.modelCursor.parent:Om(e.modelCursor),r=i.createPositionAfter(t))}return r}(i,e.viewItem.getChildren(),n);e.modelRange=t.createRange(e.modelCursor,a),s.cursorParent?e.modelCursor=t.createPositionAt(s.cursorParent,0):e.modelCursor=e.modelRange.end}}function Mm(t,e,n){if(n.consumable.test(e.viewItem,{name:!0})){const t=Array.from(e.viewItem.getChildren());for(const e of t){!(e.is("li")||Dm(e))&&e._remove()}}}function Em(t,e,n){if(n.consumable.test(e.viewItem,{name:!0})){if(0===e.viewItem.childCount)return;const t=[...e.viewItem.getChildren()];let n=!1,i=!0;for(const e of t)n&&!Dm(e)&&e._remove(),e.is("text")?(i&&(e._data=e.data.replace(/^\s+/,"")),e.nextSibling&&!Dm(e.nextSibling)||(e._data=e.data.replace(/\s+$/,""))):Dm(e)&&(n=!0),i=!1}}function Im(t){return(e,n)=>{if(n.isPhantom)return;const i=n.modelPosition.nodeBefore;if(i&&i.is("listItem")){const e=n.mapper.toViewElement(i),o=e.getAncestors().find(Dm),r=t.createPositionAt(e,0).getWalker();for(const t of r){if("elementStart"==t.type&&t.item.is("li")){n.viewPosition=t.previousPosition;break}if("elementEnd"==t.type&&t.item==o){n.viewPosition=t.nextPosition;break}}}}}function Nm(t,[e,n]){let i,o=e.is("documentFragment")?e.getChild(0):e;if(i=n?this.createSelection(n):this.document.selection,o&&o.is("listItem")){const t=i.getFirstPosition();let e=null;if(t.parent.is("listItem")?e=t.parent:t.nodeBefore&&t.nodeBefore.is("listItem")&&(e=t.nodeBefore),e){const t=e.getAttribute("listIndent");if(t>0)for(;o&&o.is("listItem");)o._setAttribute("listIndent",o.getAttribute("listIndent")+t),o=o.nextSibling}}}function Om(t){const e=new bs({startPosition:t});let n;do{n=e.next()}while(!n.value.item.is("listItem"));return n.value.item}function Rm(t,e,n,i,o,r){const s=_m(e.nodeBefore,{sameIndent:!0,smallerIndent:!0,listIndent:t,foo:"b"}),a=o.mapper,c=o.writer,l=s?s.getAttribute("listIndent"):null;let d;if(s)if(l==t){const t=a.toViewElement(s).parent;d=c.createPositionAfter(t)}else{const t=r.createPositionAt(s,"end");d=a.toViewPosition(t)}else d=n;d=km(d);for(const t of[...i.getChildren()])Dm(t)&&(d=c.move(c.createRangeOn(t),d).end,wm(c,t,t.nextSibling),wm(c,t.previousSibling,t))}function Dm(t){return t.is("ol")||t.is("ul")}class Lm extends Mc{static get pluginName(){return"ListEditing"}static get requires(){return[Tf]}init(){const t=this.editor;t.model.schema.register("listItem",{inheritAllFrom:"$block",allowAttributes:["listType","listIndent"]});const e=t.data,n=t.editing;var i;t.model.document.registerPostFixer(e=>function(t,e){const n=t.document.differ.getChanges(),i=new Map;let o=!1;for(const i of n)if("insert"==i.type&&"listItem"==i.name)r(i.position);else if("insert"==i.type&&"listItem"!=i.name){if("$text"!=i.name){const n=i.position.nodeAfter;n.hasAttribute("listIndent")&&(e.removeAttribute("listIndent",n),o=!0),n.hasAttribute("listType")&&(e.removeAttribute("listType",n),o=!0);for(const e of Array.from(t.createRangeIn(n)).filter(t=>t.item.is("listItem")))r(e.previousPosition)}r(i.position.getShiftedBy(i.length))}else"remove"==i.type&&"listItem"==i.name?r(i.position):("attribute"==i.type&&"listIndent"==i.attributeKey||"attribute"==i.type&&"listType"==i.attributeKey)&&r(i.range.start);for(const t of i.values())s(t),a(t);return o;function r(t){const e=t.nodeBefore;if(e&&e.is("listItem")){let t=e;if(i.has(t))return;for(let e=t.previousSibling;e&&e.is("listItem");e=t.previousSibling)if(t=e,i.has(t))return;i.set(e,t)}else{const e=t.nodeAfter;e&&e.is("listItem")&&i.set(e,e)}}function s(t){let n=0,i=null;for(;t&&t.is("listItem");){const r=t.getAttribute("listIndent");if(r>n){let s;null===i?(i=r-n,s=n):(i>r&&(i=r),s=r-i),e.setAttribute("listIndent",s,t),o=!0}else i=null,n=t.getAttribute("listIndent")+1;t=t.nextSibling}}function a(t){let n=[],i=null;for(;t&&t.is("listItem");){const r=t.getAttribute("listIndent");if(i&&i.getAttribute("listIndent")>r&&(n=n.slice(0,r+1)),0!=r)if(n[r]){const i=n[r];t.getAttribute("listType")!=i&&(e.setAttribute("listType",i,t),o=!0)}else n[r]=t.getAttribute("listType");i=t,t=t.nextSibling}}}(t.model,e)),n.mapper.registerViewToModelLength("li",jm),e.mapper.registerViewToModelLength("li",jm),n.mapper.on("modelToViewPosition",Im(n.view)),n.mapper.on("viewToModelPosition",(i=t.model,(t,e)=>{const n=e.viewPosition,o=n.parent,r=e.mapper;if("ul"==o.name||"ol"==o.name){if(n.isAtEnd){const t=r.toModelElement(n.nodeBefore),o=r.getModelLength(n.nodeBefore);e.modelPosition=i.createPositionBefore(t).getShiftedBy(o)}else{const t=r.toModelElement(n.nodeAfter);e.modelPosition=i.createPositionBefore(t)}t.stop()}else if("li"==o.name&&n.nodeBefore&&("ul"==n.nodeBefore.name||"ol"==n.nodeBefore.name)){const s=r.toModelElement(o);let a=1,c=n.nodeBefore;for(;c&&Dm(c);)a+=r.getModelLength(c),c=c.previousSibling;e.modelPosition=i.createPositionBefore(s).getShiftedBy(a),t.stop()}})),e.mapper.on("modelToViewPosition",Im(n.view)),t.conversion.for("editingDowncast").add(e=>{e.on("insert",Tm,{priority:"high"}),e.on("insert:listItem",xm(t.model)),e.on("attribute:listType:listItem",Am,{priority:"high"}),e.on("attribute:listType:listItem",Cm,{priority:"low"}),e.on("attribute:listIndent:listItem",function(t){return(e,n,i)=>{if(!i.consumable.consume(n.item,"attribute:listIndent"))return;const o=i.mapper.toViewElement(n.item),r=i.writer;r.breakContainer(r.createPositionBefore(o)),r.breakContainer(r.createPositionAfter(o));const s=o.parent,a=s.previousSibling,c=r.createRangeOn(s);r.remove(c),a&&a.nextSibling&&wm(r,a,a.nextSibling),Rm(n.attributeOldValue+1,n.range.start,c.start,o,i,t),bm(n.item,o,i,t);for(const t of n.item.getChildren())i.consumable.consume(t,"insert")}}(t.model)),e.on("remove:listItem",function(t){return(e,n,i)=>{const o=i.mapper.toViewPosition(n.position).getLastMatchingPosition(t=>!t.item.is("li")).nodeAfter,r=i.writer;r.breakContainer(r.createPositionBefore(o)),r.breakContainer(r.createPositionAfter(o));const s=o.parent,a=s.previousSibling,c=r.createRangeOn(s),l=r.remove(c);a&&a.nextSibling&&wm(r,a,a.nextSibling),Rm(i.mapper.toModelElement(o).getAttribute("listIndent")+1,n.position,c.start,o,i,t);for(const t of r.createRangeIn(l).getItems())i.mapper.unbindViewElement(t);e.stop()}}(t.model)),e.on("remove",Pm,{priority:"low"})}),t.conversion.for("dataDowncast").add(e=>{e.on("insert",Tm,{priority:"high"}),e.on("insert:listItem",xm(t.model))}),t.conversion.for("upcast").add(t=>{t.on("element:ul",Mm,{priority:"high"}),t.on("element:ol",Mm,{priority:"high"}),t.on("element:li",Em,{priority:"high"}),t.on("element:li",Sm)}),t.model.on("insertContent",Nm,{priority:"high"}),t.commands.add("numberedList",new hm(t,"numbered")),t.commands.add("bulletedList",new hm(t,"bulleted")),t.commands.add("indentList",new gm(t,"forward")),t.commands.add("outdentList",new gm(t,"backward"));const o=n.view.document;this.listenTo(o,"enter",(t,e)=>{const n=this.editor.model.document,i=n.selection.getLastPosition().parent;n.selection.isCollapsed&&"listItem"==i.name&&i.isEmpty&&(this.editor.execute("outdentList"),e.preventDefault(),t.stop())}),this.listenTo(o,"delete",(t,e)=>{if("backward"!==e.direction)return;const n=this.editor.model.document.selection;if(!n.isCollapsed)return;const i=n.getFirstPosition();if(!i.isAtStart)return;const o=i.parent;"listItem"===o.name&&(o.previousSibling&&"listItem"===o.previousSibling.name||(this.editor.execute("outdentList"),e.preventDefault(),t.stop()))},{priority:"high"});const r=t=>(e,n)=>{this.editor.commands.get(t).isEnabled&&(this.editor.execute(t),n())};t.keystrokes.set("Tab",r("indentList")),t.keystrokes.set("Shift+Tab",r("outdentList"))}afterInit(){const t=this.editor.commands,e=t.get("indent"),n=t.get("outdent");e&&e.registerChildCommand(t.get("indentList")),n&&n.registerChildCommand(t.get("outdentList"))}}function jm(t){let e=1;for(const n of t.getChildren())if("ul"==n.name||"ol"==n.name)for(const t of n.getChildren())e+=jm(t);return e}class Vm extends Mc{init(){const t=this.editor.t;vm(this.editor,"numberedList",t("Numbered List"),''),vm(this.editor,"bulletedList",t("Bulleted List"),'')}}function zm(t,e){return t=>{t.on("attribute:url:media",n)};function n(n,i,o){if(!o.consumable.consume(i.item,n.name))return;const r=i.attributeNewValue,s=o.writer,a=o.mapper.toViewElement(i.item);s.remove(s.createRangeIn(a));const c=t.getMediaViewElement(s,r,e);s.insert(s.createPositionAt(a,0),c)}}function Bm(t,e,n,i){const o=t.createContainerElement("figure",{class:"media"});return o.getFillerOffset=Hm,t.insert(t.createPositionAt(o,0),e.getMediaViewElement(t,n,i)),o}function Fm(t){const e=t.getSelectedElement();return e&&e.is("media")?e:null}function Um(t,e,n){t.change(i=>{const o=i.createElement("media",{url:e});t.insertContent(o,n),i.setSelection(o,"on")})}function Hm(){return null}class Wm extends ld{refresh(){const t=this.editor.model,e=t.document.selection,n=t.schema,i=e.getFirstPosition(),o=Fm(e);let r=i.parent;r!=r.root&&(r=r.parent),this.value=o?o.getAttribute("url"):null,this.isEnabled=n.checkChild(r,"media")}execute(t){const e=this.editor.model,n=e.document.selection,i=Fm(n);if(i)e.change(e=>{e.setAttribute("url",t,i)});else{const i=Bu(n,e);Um(e,t,i)}}}class qm{constructor(t,e){const n=e.providers,i=e.extraProviders||[],o=new Set(e.removeProviders),r=n.concat(i).filter(t=>{const e=t.name;return e?!o.has(e):(console.warn(Object(hn.a)("media-embed-no-provider-name: The configured media provider has no name and cannot be used."),{provider:t}),!1)});this.locale=t,this.providerDefinitions=r}hasMedia(t){return!!this._getMedia(t)}getMediaViewElement(t,e,n){return this._getMedia(e).getViewElement(t,n)}_getMedia(t){if(!t)return new Ym(this.locale);t=t.trim();for(const e of this.providerDefinitions){const n=e.html;let i=e.url;Array.isArray(i)||(i=[i]);for(const e of i){const i=this._getUrlMatches(t,e);if(i)return new Ym(this.locale,t,i,n)}}return null}_getUrlMatches(t,e){let n=t.match(e);if(n)return n;let i=t.replace(/^https?:\/\//,"");return n=i.match(e),n||(i=i.replace(/^www\./,""),n=i.match(e),n||null)}}class Ym{constructor(t,e,n,i){this.url=this._getValidUrl(e),this._t=t.t,this._match=n,this._previewRenderer=i}getViewElement(t,e){const n={};if(e.renderForEditingView||e.renderMediaPreview&&this.url&&this._previewRenderer){this.url&&(n["data-oembed-url"]=this.url),e.renderForEditingView&&(n.class="ck-media__wrapper");const i=this._getPreviewHtml(e);return t.createUIElement("div",n,(function(t){const e=this.toDomElement(t);return e.innerHTML=i,e}))}return this.url&&(n.url=this.url),t.createEmptyElement("oembed",n)}_getPreviewHtml(t){return this._previewRenderer?this._previewRenderer(this._match):this.url&&t.renderForEditingView?this._getPlaceholderHtml():""}_getPlaceholderHtml(){const t=new dl,e=new ll;return t.text=this._t("Open media in new tab"),e.content='',e.viewBox="0 0 64 42",new Nc({tag:"div",attributes:{class:"ck ck-reset_all ck-media__placeholder"},children:[{tag:"div",attributes:{class:"ck-media__placeholder__icon"},children:[e]},{tag:"a",attributes:{class:"ck-media__placeholder__url",target:"_blank",rel:"noopener noreferrer",href:this.url},children:[{tag:"span",attributes:{class:"ck-media__placeholder__url__text"},children:[this.url]},t]}]}).render().outerHTML}_getValidUrl(t){return t?t.match(/^https?/)?t:"https://"+t:null}}n(74);class Gm extends Mc{static get pluginName(){return"MediaEmbedEditing"}constructor(t){super(t),t.config.define("mediaEmbed",{providers:[{name:"dailymotion",url:/^dailymotion\.com\/video\/(\w+)/,html:t=>``},{name:"spotify",url:[/^open\.spotify\.com\/(artist\/\w+)/,/^open\.spotify\.com\/(album\/\w+)/,/^open\.spotify\.com\/(track\/\w+)/],html:t=>``},{name:"youtube",url:[/^(?:m\.)?youtube\.com\/watch\?v=([\w-]+)/,/^(?:m\.)?youtube\.com\/v\/([\w-]+)/,/^youtube\.com\/embed\/([\w-]+)/,/^youtu\.be\/([\w-]+)/],html:t=>``},{name:"vimeo",url:[/^vimeo\.com\/(\d+)/,/^vimeo\.com\/[^/]+\/[^/]+\/video\/(\d+)/,/^vimeo\.com\/album\/[^/]+\/video\/(\d+)/,/^vimeo\.com\/channels\/[^/]+\/(\d+)/,/^vimeo\.com\/groups\/[^/]+\/videos\/(\d+)/,/^vimeo\.com\/ondemand\/[^/]+\/(\d+)/,/^player\.vimeo\.com\/video\/(\d+)/],html:t=>``},{name:"instagram",url:/^instagram\.com\/p\/(\w+)/},{name:"twitter",url:/^twitter\.com/},{name:"googleMaps",url:/^google\.com\/maps/},{name:"flickr",url:/^flickr\.com/},{name:"facebook",url:/^facebook\.com/}]}),this.registry=new qm(t.locale,t.config.get("mediaEmbed"))}init(){const t=this.editor,e=t.model.schema,n=t.t,i=t.conversion,o=t.config.get("mediaEmbed.previewsInData"),r=this.registry;t.commands.add("mediaEmbed",new Wm(t)),e.register("media",{isObject:!0,isBlock:!0,allowWhere:"$block",allowAttributes:["url"]}),i.for("dataDowncast").elementToElement({model:"media",view:(t,e)=>{const n=t.getAttribute("url");return Bm(e,r,n,{renderMediaPreview:n&&o})}}),i.for("dataDowncast").add(zm(r,{renderMediaPreview:o})),i.for("editingDowncast").elementToElement({model:"media",view:(t,e)=>{const i=t.getAttribute("url"),o=Bm(e,r,i,{renderForEditingView:!0});return s=o,a=e,c=n("media widget"),a.setCustomProperty("media",!0,s),ju(s,a,{label:c});var s,a,c}}),i.for("editingDowncast").add(zm(r,{renderForEditingView:!0})),i.for("upcast").elementToElement({view:{name:"oembed",attributes:{url:!0}},model:(t,e)=>{const n=t.getAttribute("url");if(r.hasMedia(n))return e.createElement("media",{url:n})}}).elementToElement({view:{name:"div",attributes:{"data-oembed-url":!0}},model:(t,e)=>{const n=t.getAttribute("data-oembed-url");if(r.hasMedia(n))return e.createElement("media",{url:n})}})}}const $m=/^(?:http(s)?:\/\/)?[\w.-]+(?:\.[\w.-]+)+[\w\-._~:/?#[\]@!$&'()*+,;=]+$/;class Qm extends Mc{static get requires(){return[cd,ou]}static get pluginName(){return"AutoMediaEmbed"}constructor(t){super(t),this._timeoutId=null,this._positionToInsert=null}init(){const t=this.editor,e=t.model.document;this.listenTo(t.plugins.get(cd),"inputTransformation",()=>{const t=e.selection.getFirstRange(),n=ac.fromPosition(t.start);n.stickiness="toPrevious";const i=ac.fromPosition(t.end);i.stickiness="toNext",e.once("change:data",()=>{this._embedMediaBetweenPositions(n,i),n.detach(),i.detach()},{priority:"high"})}),t.commands.get("undo").on("execute",()=>{this._timeoutId&&(Xo.window.clearTimeout(this._timeoutId),this._positionToInsert.detach(),this._timeoutId=null,this._positionToInsert=null)},{priority:"high"})}_embedMediaBetweenPositions(t,e){const n=this.editor,i=n.plugins.get(Gm).registry,o=new Rs(t,e),r=o.getWalker({ignoreElementEnd:!0});let s="";for(const t of r)t.item.is("textProxy")&&(s+=t.item.data);if(s=s.trim(),!s.match($m))return;if(!i.hasMedia(s))return;n.commands.get("mediaEmbed").isEnabled&&(this._positionToInsert=ac.fromPosition(t),this._timeoutId=Xo.window.setTimeout(()=>{n.model.change(t=>{let e;this._timeoutId=null,t.remove(o),"$graveyard"!==this._positionToInsert.root.rootName&&(e=this._positionToInsert),Um(n.model,s,e),this._positionToInsert.detach(),this._positionToInsert=null})},100))}}n(76);class Km extends Jc{constructor(t,e){super(e);const n=e.t;this.focusTracker=new hl,this.keystrokes=new Ac,this.urlInputView=this._createUrlInput(),this.saveButtonView=this._createButton(n("Save"),tf,"ck-button-save"),this.saveButtonView.type="submit",this.cancelButtonView=this._createButton(n("Cancel"),ef,"ck-button-cancel","cancel"),this._focusables=new Ic,this._focusCycler=new bl({focusables:this._focusables,focusTracker:this.focusTracker,keystrokeHandler:this.keystrokes,actions:{focusPrevious:"shift + tab",focusNext:"tab"}}),this._validators=t,this.setTemplate({tag:"form",attributes:{class:["ck","ck-media-form"],tabindex:"-1"},children:[this.urlInputView,this.saveButtonView,this.cancelButtonView]})}render(){super.render(),Xh({view:this}),[this.urlInputView,this.saveButtonView,this.cancelButtonView].forEach(t=>{this._focusables.add(t),this.focusTracker.add(t.element)}),this.keystrokes.listenTo(this.element);const t=t=>t.stopPropagation();this.keystrokes.set("arrowright",t),this.keystrokes.set("arrowleft",t),this.keystrokes.set("arrowup",t),this.keystrokes.set("arrowdown",t),this.listenTo(this.urlInputView.element,"selectstart",(t,e)=>{e.stopPropagation()},{priority:"high"})}focus(){this._focusCycler.focusFirst()}get url(){return this.urlInputView.fieldView.element.value.trim()}set url(t){this.urlInputView.fieldView.element.value=t.trim()}isValid(){this.resetFormStatus();for(const t of this._validators){const e=t(this);if(e)return this.urlInputView.errorText=e,!1}return!0}resetFormStatus(){this.urlInputView.errorText=null,this.urlInputView.infoText=this._urlInputViewInfoDefault}_createUrlInput(){const t=this.locale.t,e=new Kh(this.locale,Zh),n=e.fieldView;return this._urlInputViewInfoDefault=t("Paste the media URL in the input."),this._urlInputViewInfoTip=t("Tip: Paste the URL into the content to embed faster."),e.label=t("Media URL"),e.infoText=this._urlInputViewInfoDefault,n.placeholder="https://example.com",n.on("input",()=>{e.infoText=n.element.value?this._urlInputViewInfoTip:this._urlInputViewInfoDefault}),e}_createButton(t,e,n,i){const o=new ul(this.locale);return o.set({label:t,icon:e,tooltip:!0}),o.extendTemplate({attributes:{class:n}}),i&&o.delegate("execute").to(this,i),o}}class Jm extends Mc{static get requires(){return[Gm]}static get pluginName(){return"MediaEmbedUI"}init(){const t=this.editor,e=t.commands.get("mediaEmbed"),n=t.plugins.get(Gm).registry;this.form=new Km(function(t,e){return[e=>{if(!e.url.length)return t("The URL must not be empty.")},n=>{if(!e.hasMedia(n.url))return t("This media URL is not supported.")}]}(t.t,n),t.locale),t.ui.componentFactory.add("mediaEmbed",n=>{const i=Il(n);return this._setUpDropdown(i,this.form,e,t),this._setUpForm(this.form,i,e),i})}_setUpDropdown(t,e,n){const i=this.editor,o=i.t,r=t.buttonView;function s(){i.editing.view.focus(),t.isOpen=!1}t.bind("isEnabled").to(n),t.panelView.children.add(e),r.set({label:o("Insert media"),icon:'\n',tooltip:!0}),r.on("open",()=>{e.url=n.value||"",e.urlInputView.fieldView.select(),e.focus()},{priority:"low"}),t.on("submit",()=>{e.isValid()&&(i.execute("mediaEmbed",e.url),s())}),t.on("change:isOpen",()=>e.resetFormStatus()),t.on("cancel",()=>s())}_setUpForm(t,e,n){t.delegate("submit","cancel").to(e),t.urlInputView.bind("value").to(n,"value"),t.urlInputView.bind("isReadOnly").to(n,"isEnabled",t=>!t),t.saveButtonView.bind("isEnabled").to(n)}}n(78);function Zm(t,e){if(!t.childCount)return;const n=new wf(t.document),i=function(t,e){const n=e.createRangeIn(t),i=new jn({name:/^p|h\d+$/,styles:{"mso-list":/.*/}}),o=[];for(const t of n)if("elementStart"===t.type&&i.match(t.item)){const e=tg(t.item);o.push({element:t.item,id:e.id,order:e.order,indent:e.indent})}return o}(t,n);if(!i.length)return;let o=null,r=1;i.forEach((t,s)=>{const a=function(t,e){if(!t)return!0;if(t.id!==e.id)return!0;const n=e.element.previousSibling;if(!n)return!0;return i=n,!(i.is("ol")||i.is("ul"));var i}(i[s-1],t),c=a?null:i[s-1],l=(u=t,(d=c)?u.indent-d.indent:u.indent-1);var d,u;if(a&&(o=null,r=1),!o||0!==l){const i=function(t,e){const n=new RegExp(`@list l${t.id}:level${t.indent}\\s*({[^}]*)`,"gi"),i=/mso-level-number-format:([^;]*);/gi,o=n.exec(e);let r="decimal";if(o&&o[1]){const t=i.exec(o[1]);t&&t[1]&&(r=t[1].trim())}return{type:"bullet"!==r&&"image"!==r?"ol":"ul",style:r}}(t,e);if(o){if(t.indent>r){const t=o.getChild(o.childCount-1),e=t.getChild(t.childCount-1);o=Xm(i,e,n),r+=1}else if(t.indent(\s+)<\/span>/g,(t,e)=>1===e.length?" ":Array(e.length+1).join(" ").substr(0,e.length))}function og(t){const e=new DOMParser,n=function(t){return ig(ig(t)).replace(/([\s]*?)[\r\n]+(\s*<\/span>)/g,"$1$2").replace(/<\/span>/g,"").replace(/ <\//g," ").replace(/ <\/o:p>/g," ").replace(/( |\u00A0)<\/o:p>/g,"").replace(/>(\s*[\r\n]\s*)<")}(function(t){const e=t.match(/<\/body>(.*?)(<\/html>|$)/);e&&e[1]&&(t=t.slice(0,e.index)+t.slice(e.index).replace(e[1],""));return t}(t=t.replace(/
abc
\n\t\t\t//\n\t\t\tif ( isAttribute && this._wrapAttributeElement( wrapElement, child ) ) {\n\t\t\t\twrapPositions.push( new Position( parent, i ) );\n\t\t\t}\n\t\t\t//\n\t\t\t// Wrap the child if it is not an attribute element or if it is an attribute element that should be inside\n\t\t\t// `wrapElement` (due to priority).\n\t\t\t//\n\t\t\t//
abc
-->
abc
\n\t\t\t//
abc
-->
abc
\n\t\t\t//\n\t\t\telse if ( isText || isEmpty || isUI || ( isAttribute && shouldABeOutsideB( wrapElement, child ) ) ) {\n\t\t\t\t// Clone attribute.\n\t\t\t\tconst newAttribute = wrapElement._clone();\n\n\t\t\t\t// Wrap current node with new attribute.\n\t\t\t\tchild._remove();\n\t\t\t\tnewAttribute._appendChild( child );\n\n\t\t\t\tparent._insertChild( i, newAttribute );\n\t\t\t\tthis._addToClonedElementsGroup( newAttribute );\n\n\t\t\t\twrapPositions.push( new Position( parent, i ) );\n\t\t\t}\n\t\t\t//\n\t\t\t// If other nested attribute is found and it wasn't wrapped (see above), continue wrapping inside it.\n\t\t\t//\n\t\t\t//
\n\t\t\t//\n\t\t\telse if ( isAttribute ) {\n\t\t\t\tthis._wrapChildren( child, 0, child.childCount, wrapElement );\n\t\t\t}\n\n\t\t\ti++;\n\t\t}\n\n\t\t// Merge at each wrap.\n\t\tlet offsetChange = 0;\n\n\t\tfor ( const position of wrapPositions ) {\n\t\t\tposition.offset -= offsetChange;\n\n\t\t\t// Do not merge with elements outside selected children.\n\t\t\tif ( position.offset == startOffset ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tconst newPosition = this.mergeAttributes( position );\n\n\t\t\t// If nodes were merged - other merge offsets will change.\n\t\t\tif ( !newPosition.isEqual( position ) ) {\n\t\t\t\toffsetChange++;\n\t\t\t\tendOffset--;\n\t\t\t}\n\t\t}\n\n\t\treturn Range._createFromParentsAndOffsets( parent, startOffset, parent, endOffset );\n\t}\n\n\t/**\n\t * Unwraps children from provided `unwrapElement`. Only children contained in `parent` element between\n\t * `startOffset` and `endOffset` will be unwrapped.\n\t *\n\t * @private\n\t * @param {module:engine/view/element~Element} parent\n\t * @param {Number} startOffset\n\t * @param {Number} endOffset\n\t * @param {module:engine/view/element~Element} unwrapElement\n\t */\n\t_unwrapChildren( parent, startOffset, endOffset, unwrapElement ) {\n\t\tlet i = startOffset;\n\t\tconst unwrapPositions = [];\n\n\t\t// Iterate over each element between provided offsets inside parent.\n\t\t// We don't use tree walker or range iterator because we will be removing and merging potentially multiple nodes,\n\t\t// so it could get messy. It is safer to it manually in this case.\n\t\twhile ( i < endOffset ) {\n\t\t\tconst child = parent.getChild( i );\n\n\t\t\t// Skip all text nodes. There should be no container element's here either.\n\t\t\tif ( !child.is( 'attributeElement' ) ) {\n\t\t\t\ti++;\n\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t//\n\t\t\t// (In all examples, assume that `unwrapElement` is `` element.)\n\t\t\t//\n\t\t\t// If the child is similar to the given attribute element, unwrap it - it will be completely removed.\n\t\t\t//\n\t\t\t//
abcxyz
-->
abcxyz
\n\t\t\t//\n\t\t\tif ( child.isSimilar( unwrapElement ) ) {\n\t\t\t\tconst unwrapped = child.getChildren();\n\t\t\t\tconst count = child.childCount;\n\n\t\t\t\t// Replace wrapper element with its children\n\t\t\t\tchild._remove();\n\t\t\t\tparent._insertChild( i, unwrapped );\n\n\t\t\t\tthis._removeFromClonedElementsGroup( child );\n\n\t\t\t\t// Save start and end position of moved items.\n\t\t\t\tunwrapPositions.push(\n\t\t\t\t\tnew Position( parent, i ),\n\t\t\t\t\tnew Position( parent, i + count )\n\t\t\t\t);\n\n\t\t\t\t// Skip elements that were unwrapped. Assuming there won't be another element to unwrap in child elements.\n\t\t\t\ti += count;\n\t\t\t\tendOffset += count - 1;\n\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t//\n\t\t\t// If the child is not similar but is an attribute element, try partial unwrapping - remove the same attributes/styles/classes.\n\t\t\t// Partial unwrapping will happen only if the elements have the same name.\n\t\t\t//\n\t\t\t//
abcxyz
-->
abcxyz
\n\t\t\t//
abcxyz
-->
abcxyz
\n\t\t\t//\n\t\t\tif ( this._unwrapAttributeElement( unwrapElement, child ) ) {\n\t\t\t\tunwrapPositions.push(\n\t\t\t\t\tnew Position( parent, i ),\n\t\t\t\t\tnew Position( parent, i + 1 )\n\t\t\t\t);\n\n\t\t\t\ti++;\n\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t//\n\t\t\t// If other nested attribute is found, look through it's children for elements to unwrap.\n\t\t\t//\n\t\t\t//
abc
-->
abc
\n\t\t\t//\n\t\t\tthis._unwrapChildren( child, 0, child.childCount, unwrapElement );\n\n\t\t\ti++;\n\t\t}\n\n\t\t// Merge at each unwrap.\n\t\tlet offsetChange = 0;\n\n\t\tfor ( const position of unwrapPositions ) {\n\t\t\tposition.offset -= offsetChange;\n\n\t\t\t// Do not merge with elements outside selected children.\n\t\t\tif ( position.offset == startOffset || position.offset == endOffset ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tconst newPosition = this.mergeAttributes( position );\n\n\t\t\t// If nodes were merged - other merge offsets will change.\n\t\t\tif ( !newPosition.isEqual( position ) ) {\n\t\t\t\toffsetChange++;\n\t\t\t\tendOffset--;\n\t\t\t}\n\t\t}\n\n\t\treturn Range._createFromParentsAndOffsets( parent, startOffset, parent, endOffset );\n\t}\n\n\t/**\n\t * Helper function for `view.writer.wrap`. Wraps range with provided attribute element.\n\t * This method will also merge newly added attribute element with its siblings whenever possible.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n\t * an instance of {@link module:engine/view/attributeelement~AttributeElement AttributeElement}.\n\t *\n\t * @private\n\t * @param {module:engine/view/range~Range} range\n\t * @param {module:engine/view/attributeelement~AttributeElement} attribute\n\t * @returns {module:engine/view/range~Range} New range after wrapping, spanning over wrapping attribute element.\n\t */\n\t_wrapRange( range, attribute ) {\n\t\t// Break attributes at range start and end.\n\t\tconst { start: breakStart, end: breakEnd } = this._breakAttributesRange( range, true );\n\t\tconst parentContainer = breakStart.parent;\n\n\t\t// Wrap all children with attribute.\n\t\tconst newRange = this._wrapChildren( parentContainer, breakStart.offset, breakEnd.offset, attribute );\n\n\t\t// Merge attributes at the both ends and return a new range.\n\t\tconst start = this.mergeAttributes( newRange.start );\n\n\t\t// If start position was merged - move end position back.\n\t\tif ( !start.isEqual( newRange.start ) ) {\n\t\t\tnewRange.end.offset--;\n\t\t}\n\t\tconst end = this.mergeAttributes( newRange.end );\n\n\t\treturn new Range( start, end );\n\t}\n\n\t/**\n\t * Helper function for {@link #wrap}. Wraps position with provided attribute element.\n\t * This method will also merge newly added attribute element with its siblings whenever possible.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError} `view-writer-wrap-invalid-attribute` when passed attribute element is not\n\t * an instance of {@link module:engine/view/attributeelement~AttributeElement AttributeElement}.\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} position\n\t * @param {module:engine/view/attributeelement~AttributeElement} attribute\n\t * @returns {module:engine/view/position~Position} New position after wrapping.\n\t */\n\t_wrapPosition( position, attribute ) {\n\t\t// Return same position when trying to wrap with attribute similar to position parent.\n\t\tif ( attribute.isSimilar( position.parent ) ) {\n\t\t\treturn movePositionToTextNode( position.clone() );\n\t\t}\n\n\t\t// When position is inside text node - break it and place new position between two text nodes.\n\t\tif ( position.parent.is( 'text' ) ) {\n\t\t\tposition = breakTextNode( position );\n\t\t}\n\n\t\t// Create fake element that will represent position, and will not be merged with other attributes.\n\t\tconst fakePosition = this.createAttributeElement();\n\t\tfakePosition._priority = Number.POSITIVE_INFINITY;\n\t\tfakePosition.isSimilar = () => false;\n\n\t\t// Insert fake element in position location.\n\t\tposition.parent._insertChild( position.offset, fakePosition );\n\n\t\t// Range around inserted fake attribute element.\n\t\tconst wrapRange = new Range( position, position.getShiftedBy( 1 ) );\n\n\t\t// Wrap fake element with attribute (it will also merge if possible).\n\t\tthis.wrap( wrapRange, attribute );\n\n\t\t// Remove fake element and place new position there.\n\t\tconst newPosition = new Position( fakePosition.parent, fakePosition.index );\n\t\tfakePosition._remove();\n\n\t\t// If position is placed between text nodes - merge them and return position inside.\n\t\tconst nodeBefore = newPosition.nodeBefore;\n\t\tconst nodeAfter = newPosition.nodeAfter;\n\n\t\tif ( nodeBefore instanceof Text && nodeAfter instanceof Text ) {\n\t\t\treturn mergeTextNodes( nodeBefore, nodeAfter );\n\t\t}\n\n\t\t// If position is next to text node - move position inside.\n\t\treturn movePositionToTextNode( newPosition );\n\t}\n\n\t/**\n\t * \tWraps one {@link module:engine/view/attributeelement~AttributeElement AttributeElement} into another by\n\t * \tmerging them if possible. When merging is possible - all attributes, styles and classes are moved from wrapper\n\t * \telement to element being wrapped.\n\t *\n\t * \t@private\n\t * \t@param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n\t * \t@param {module:engine/view/attributeelement~AttributeElement} toWrap AttributeElement to wrap using wrapper element.\n\t * \t@returns {Boolean} Returns `true` if elements are merged.\n\t */\n\t_wrapAttributeElement( wrapper, toWrap ) {\n\t\tif ( !canBeJoined( wrapper, toWrap ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Can't merge if name or priority differs.\n\t\tif ( wrapper.name !== toWrap.name || wrapper.priority !== toWrap.priority ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check if attributes can be merged.\n\t\tfor ( const key of wrapper.getAttributeKeys() ) {\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If some attributes are different we cannot wrap.\n\t\t\tif ( toWrap.hasAttribute( key ) && toWrap.getAttribute( key ) !== wrapper.getAttribute( key ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if styles can be merged.\n\t\tfor ( const key of wrapper.getStyleNames() ) {\n\t\t\tif ( toWrap.hasStyle( key ) && toWrap.getStyle( key ) !== wrapper.getStyle( key ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Move all attributes/classes/styles from wrapper to wrapped AttributeElement.\n\t\tfor ( const key of wrapper.getAttributeKeys() ) {\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// Move only these attributes that are not present - other are similar.\n\t\t\tif ( !toWrap.hasAttribute( key ) ) {\n\t\t\t\tthis.setAttribute( key, wrapper.getAttribute( key ), toWrap );\n\t\t\t}\n\t\t}\n\n\t\tfor ( const key of wrapper.getStyleNames() ) {\n\t\t\tif ( !toWrap.hasStyle( key ) ) {\n\t\t\t\tthis.setStyle( key, wrapper.getStyle( key ), toWrap );\n\t\t\t}\n\t\t}\n\n\t\tfor ( const key of wrapper.getClassNames() ) {\n\t\t\tif ( !toWrap.hasClass( key ) ) {\n\t\t\t\tthis.addClass( key, toWrap );\n\t\t\t}\n\t\t}\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Unwraps {@link module:engine/view/attributeelement~AttributeElement AttributeElement} from another by removing\n\t * corresponding attributes, classes and styles. All attributes, classes and styles from wrapper should be present\n\t * inside element being unwrapped.\n\t *\n\t * @private\n\t * @param {module:engine/view/attributeelement~AttributeElement} wrapper Wrapper AttributeElement.\n\t * @param {module:engine/view/attributeelement~AttributeElement} toUnwrap AttributeElement to unwrap using wrapper element.\n\t * @returns {Boolean} Returns `true` if elements are unwrapped.\n\t **/\n\t_unwrapAttributeElement( wrapper, toUnwrap ) {\n\t\tif ( !canBeJoined( wrapper, toUnwrap ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Can't unwrap if name or priority differs.\n\t\tif ( wrapper.name !== toUnwrap.name || wrapper.priority !== toUnwrap.priority ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check if AttributeElement has all wrapper attributes.\n\t\tfor ( const key of wrapper.getAttributeKeys() ) {\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// If some attributes are missing or different we cannot unwrap.\n\t\t\tif ( !toUnwrap.hasAttribute( key ) || toUnwrap.getAttribute( key ) !== wrapper.getAttribute( key ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Check if AttributeElement has all wrapper classes.\n\t\tif ( !toUnwrap.hasClass( ...wrapper.getClassNames() ) ) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Check if AttributeElement has all wrapper styles.\n\t\tfor ( const key of wrapper.getStyleNames() ) {\n\t\t\t// If some styles are missing or different we cannot unwrap.\n\t\t\tif ( !toUnwrap.hasStyle( key ) || toUnwrap.getStyle( key ) !== wrapper.getStyle( key ) ) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\t// Remove all wrapper's attributes from unwrapped element.\n\t\tfor ( const key of wrapper.getAttributeKeys() ) {\n\t\t\t// Classes and styles should be checked separately.\n\t\t\tif ( key === 'class' || key === 'style' ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tthis.removeAttribute( key, toUnwrap );\n\t\t}\n\n\t\t// Remove all wrapper's classes from unwrapped element.\n\t\tthis.removeClass( Array.from( wrapper.getClassNames() ), toUnwrap );\n\n\t\t// Remove all wrapper's styles from unwrapped element.\n\t\tthis.removeStyle( Array.from( wrapper.getStyleNames() ), toUnwrap );\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Helper function used by other `DowncastWriter` methods. Breaks attribute elements at the boundaries of given range.\n\t *\n\t * @private\n\t * @param {module:engine/view/range~Range} range Range which `start` and `end` positions will be used to break attributes.\n\t * @param {Boolean} [forceSplitText=false] If set to `true`, will break text nodes even if they are directly in container element.\n\t * This behavior will result in incorrect view state, but is needed by other view writing methods which then fixes view state.\n\t * @returns {module:engine/view/range~Range} New range with located at break positions.\n\t */\n\t_breakAttributesRange( range, forceSplitText = false ) {\n\t\tconst rangeStart = range.start;\n\t\tconst rangeEnd = range.end;\n\n\t\tvalidateRangeContainer( range, this.document );\n\n\t\t// Break at the collapsed position. Return new collapsed range.\n\t\tif ( range.isCollapsed ) {\n\t\t\tconst position = this._breakAttributes( range.start, forceSplitText );\n\n\t\t\treturn new Range( position, position );\n\t\t}\n\n\t\tconst breakEnd = this._breakAttributes( rangeEnd, forceSplitText );\n\t\tconst count = breakEnd.parent.childCount;\n\t\tconst breakStart = this._breakAttributes( rangeStart, forceSplitText );\n\n\t\t// Calculate new break end offset.\n\t\tbreakEnd.offset += breakEnd.parent.childCount - count;\n\n\t\treturn new Range( breakStart, breakEnd );\n\t}\n\n\t/**\n\t * Helper function used by other `DowncastWriter` methods. Breaks attribute elements at given position.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-empty-element` when break position\n\t * is placed inside {@link module:engine/view/emptyelement~EmptyElement EmptyElement}.\n\t *\n\t * Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-cannot-break-ui-element` when break position\n\t * is placed inside {@link module:engine/view/uielement~UIElement UIElement}.\n\t *\n\t * @private\n\t * @param {module:engine/view/position~Position} position Position where to break attributes.\n\t * @param {Boolean} [forceSplitText=false] If set to `true`, will break text nodes even if they are directly in container element.\n\t * This behavior will result in incorrect view state, but is needed by other view writing methods which then fixes view state.\n\t * @returns {module:engine/view/position~Position} New position after breaking the attributes.\n\t */\n\t_breakAttributes( position, forceSplitText = false ) {\n\t\tconst positionOffset = position.offset;\n\t\tconst positionParent = position.parent;\n\n\t\t// If position is placed inside EmptyElement - throw an exception as we cannot break inside.\n\t\tif ( position.parent.is( 'emptyElement' ) ) {\n\t\t\t/**\n\t\t\t * Cannot break inside EmptyElement instance.\n\t\t\t *\n\t\t\t * @error view-writer-cannot-break-empty-element\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-writer-cannot-break-empty-element', this.document );\n\t\t}\n\n\t\t// If position is placed inside UIElement - throw an exception as we cannot break inside.\n\t\tif ( position.parent.is( 'uiElement' ) ) {\n\t\t\t/**\n\t\t\t * Cannot break inside UIElement instance.\n\t\t\t *\n\t\t\t * @error view-writer-cannot-break-ui-element\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-writer-cannot-break-ui-element', this.document );\n\t\t}\n\n\t\t// There are no attributes to break and text nodes breaking is not forced.\n\t\tif ( !forceSplitText && positionParent.is( 'text' ) && isContainerOrFragment( positionParent.parent ) ) {\n\t\t\treturn position.clone();\n\t\t}\n\n\t\t// Position's parent is container, so no attributes to break.\n\t\tif ( isContainerOrFragment( positionParent ) ) {\n\t\t\treturn position.clone();\n\t\t}\n\n\t\t// Break text and start again in new position.\n\t\tif ( positionParent.is( 'text' ) ) {\n\t\t\treturn this._breakAttributes( breakTextNode( position ), forceSplitText );\n\t\t}\n\n\t\tconst length = positionParent.childCount;\n\n\t\t//
\n\t\t\telse {\n\t\t\t\tconst offsetAfter = positionParent.index + 1;\n\n\t\t\t\t// Break element.\n\t\t\t\tconst clonedNode = positionParent._clone();\n\n\t\t\t\t// Insert cloned node to position's parent node.\n\t\t\t\tpositionParent.parent._insertChild( offsetAfter, clonedNode );\n\t\t\t\tthis._addToClonedElementsGroup( clonedNode );\n\n\t\t\t\t// Get nodes to move.\n\t\t\t\tconst count = positionParent.childCount - positionOffset;\n\t\t\t\tconst nodesToMove = positionParent._removeChildren( positionOffset, count );\n\n\t\t\t\t// Move nodes to cloned node.\n\t\t\t\tclonedNode._appendChild( nodesToMove );\n\n\t\t\t\t// Create new position to work on.\n\t\t\t\tconst newPosition = new Position( positionParent.parent, offsetAfter );\n\n\t\t\t\treturn this._breakAttributes( newPosition, forceSplitText );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Stores the information that an {@link module:engine/view/attributeelement~AttributeElement attribute element} was\n\t * added to the tree. Saves the reference to the group in the given element and updates the group, so other elements\n\t * from the group now keep a reference to the given attribute element.\n\t *\n\t * The clones group can be obtained using {@link module:engine/view/attributeelement~AttributeElement#getElementsWithSameId}.\n\t *\n\t * Does nothing if added element has no {@link module:engine/view/attributeelement~AttributeElement#id id}.\n\t *\n\t * @private\n\t * @param {module:engine/view/attributeelement~AttributeElement} element Attribute element to save.\n\t */\n\t_addToClonedElementsGroup( element ) {\n\t\t// Add only if the element is in document tree.\n\t\tif ( !element.root.is( 'rootElement' ) ) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Traverse the element's children recursively to find other attribute elements that also might got inserted.\n\t\t// The loop is at the beginning so we can make fast returns later in the code.\n\t\tif ( element.is( 'element' ) ) {\n\t\t\tfor ( const child of element.getChildren() ) {\n\t\t\t\tthis._addToClonedElementsGroup( child );\n\t\t\t}\n\t\t}\n\n\t\tconst id = element.id;\n\n\t\tif ( !id ) {\n\t\t\treturn;\n\t\t}\n\n\t\tlet group = this._cloneGroups.get( id );\n\n\t\tif ( !group ) {\n\t\t\tgroup = new Set();\n\t\t\tthis._cloneGroups.set( id, group );\n\t\t}\n\n\t\tgroup.add( element );\n\t\telement._clonesGroup = group;\n\t}\n\n\t/**\n\t * Removes all the information about the given {@link module:engine/view/attributeelement~AttributeElement attribute element}\n\t * from its clones group.\n\t *\n\t * Keep in mind, that the element will still keep a reference to the group (but the group will not keep a reference to it).\n\t * This allows to reference the whole group even if the element was already removed from the tree.\n\t *\n\t * Does nothing if the element has no {@link module:engine/view/attributeelement~AttributeElement#id id}.\n\t *\n\t * @private\n\t * @param {module:engine/view/attributeelement~AttributeElement} element Attribute element to remove.\n\t */\n\t_removeFromClonedElementsGroup( element ) {\n\t\t// Traverse the element's children recursively to find other attribute elements that also got removed.\n\t\t// The loop is at the beginning so we can make fast returns later in the code.\n\t\tif ( element.is( 'element' ) ) {\n\t\t\tfor ( const child of element.getChildren() ) {\n\t\t\t\tthis._removeFromClonedElementsGroup( child );\n\t\t\t}\n\t\t}\n\n\t\tconst id = element.id;\n\n\t\tif ( !id ) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst group = this._cloneGroups.get( id );\n\n\t\tif ( !group ) {\n\t\t\treturn;\n\t\t}\n\n\t\tgroup.delete( element );\n\t\t// Not removing group from element on purpose!\n\t\t// If other parts of code have reference to this element, they will be able to get references to other elements from the group.\n\t}\n}\n\n// Helper function for `view.writer.wrap`. Checks if given element has any children that are not ui elements.\nfunction _hasNonUiChildren( parent ) {\n\treturn Array.from( parent.getChildren() ).some( child => !child.is( 'uiElement' ) );\n}\n\n/**\n * Attribute element need to be instance of attribute element.\n *\n * @error view-writer-wrap-invalid-attribute\n */\n\n// Returns first parent container of specified {@link module:engine/view/position~Position Position}.\n// Position's parent node is checked as first, then next parents are checked.\n// Note that {@link module:engine/view/documentfragment~DocumentFragment DocumentFragment} is treated like a container.\n//\n// @param {module:engine/view/position~Position} position Position used as a start point to locate parent container.\n// @returns {module:engine/view/containerelement~ContainerElement|module:engine/view/documentfragment~DocumentFragment|undefined}\n// Parent container element or `undefined` if container is not found.\nfunction getParentContainer( position ) {\n\tlet parent = position.parent;\n\n\twhile ( !isContainerOrFragment( parent ) ) {\n\t\tif ( !parent ) {\n\t\t\treturn undefined;\n\t\t}\n\t\tparent = parent.parent;\n\t}\n\n\treturn parent;\n}\n\n// Checks if first {@link module:engine/view/attributeelement~AttributeElement AttributeElement} provided to the function\n// can be wrapped otuside second element. It is done by comparing elements'\n// {@link module:engine/view/attributeelement~AttributeElement#priority priorities}, if both have same priority\n// {@link module:engine/view/element~Element#getIdentity identities} are compared.\n//\n// @param {module:engine/view/attributeelement~AttributeElement} a\n// @param {module:engine/view/attributeelement~AttributeElement} b\n// @returns {Boolean}\nfunction shouldABeOutsideB( a, b ) {\n\tif ( a.priority < b.priority ) {\n\t\treturn true;\n\t} else if ( a.priority > b.priority ) {\n\t\treturn false;\n\t}\n\n\t// When priorities are equal and names are different - use identities.\n\treturn a.getIdentity() < b.getIdentity();\n}\n\n// Returns new position that is moved to near text node. Returns same position if there is no text node before of after\n// specified position.\n//\n//\t\t
foo[]
->
foo{}
\n//\t\t
[]foo
->
{}foo
\n//\n// @param {module:engine/view/position~Position} position\n// @returns {module:engine/view/position~Position} Position located inside text node or same position if there is no text nodes\n// before or after position location.\nfunction movePositionToTextNode( position ) {\n\tconst nodeBefore = position.nodeBefore;\n\n\tif ( nodeBefore && nodeBefore.is( 'text' ) ) {\n\t\treturn new Position( nodeBefore, nodeBefore.data.length );\n\t}\n\n\tconst nodeAfter = position.nodeAfter;\n\n\tif ( nodeAfter && nodeAfter.is( 'text' ) ) {\n\t\treturn new Position( nodeAfter, 0 );\n\t}\n\n\treturn position;\n}\n\n// Breaks text node into two text nodes when possible.\n//\n//\t\t
foo{}bar
->
foo[]bar
\n//\t\t
{}foobar
->
[]foobar
\n//\t\t
foobar{}
->
foobar[]
\n//\n// @param {module:engine/view/position~Position} position Position that need to be placed inside text node.\n// @returns {module:engine/view/position~Position} New position after breaking text node.\nfunction breakTextNode( position ) {\n\tif ( position.offset == position.parent.data.length ) {\n\t\treturn new Position( position.parent.parent, position.parent.index + 1 );\n\t}\n\n\tif ( position.offset === 0 ) {\n\t\treturn new Position( position.parent.parent, position.parent.index );\n\t}\n\n\t// Get part of the text that need to be moved.\n\tconst textToMove = position.parent.data.slice( position.offset );\n\n\t// Leave rest of the text in position's parent.\n\tposition.parent._data = position.parent.data.slice( 0, position.offset );\n\n\t// Insert new text node after position's parent text node.\n\tposition.parent.parent._insertChild( position.parent.index + 1, new Text( position.root.document, textToMove ) );\n\n\t// Return new position between two newly created text nodes.\n\treturn new Position( position.parent.parent, position.parent.index + 1 );\n}\n\n// Merges two text nodes into first node. Removes second node and returns merge position.\n//\n// @param {module:engine/view/text~Text} t1 First text node to merge. Data from second text node will be moved at the end of\n// this text node.\n// @param {module:engine/view/text~Text} t2 Second text node to merge. This node will be removed after merging.\n// @returns {module:engine/view/position~Position} Position after merging text nodes.\nfunction mergeTextNodes( t1, t2 ) {\n\t// Merge text data into first text node and remove second one.\n\tconst nodeBeforeLength = t1.data.length;\n\tt1._data += t2.data;\n\tt2._remove();\n\n\treturn new Position( t1, nodeBeforeLength );\n}\n\n// Checks if provided nodes are valid to insert. Checks if each node is an instance of\n// {@link module:engine/view/text~Text Text} or {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n// {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElement} or\n// {@link module:engine/view/uielement~UIElement UIElement}.\n//\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-insert-invalid-node` when nodes to insert\n// contains instances that are not {@link module:engine/view/text~Text Texts},\n// {@link module:engine/view/emptyelement~EmptyElement EmptyElements},\n// {@link module:engine/view/uielement~UIElement UIElements},\n// {@link module:engine/view/attributeelement~AttributeElement AttributeElements} or\n// {@link module:engine/view/containerelement~ContainerElement ContainerElements}.\n//\n// @param Iterable. nodes\n// @param {Object} errorContext\nfunction validateNodesToInsert( nodes, errorContext ) {\n\tfor ( const node of nodes ) {\n\t\tif ( !validNodesToInsert.some( ( validNode => node instanceof validNode ) ) ) { // eslint-disable-line no-use-before-define\n\t\t\t/**\n\t\t\t * Inserted nodes should be valid to insert. of {@link module:engine/view/attributeelement~AttributeElement AttributeElement},\n\t\t\t * {@link module:engine/view/containerelement~ContainerElement ContainerElement},\n\t\t\t * {@link module:engine/view/emptyelement~EmptyElement EmptyElement},\n\t\t\t * {@link module:engine/view/uielement~UIElement UIElement}, {@link module:engine/view/text~Text Text}.\n\t\t\t *\n\t\t\t * @error view-writer-insert-invalid-node\n\t\t\t */\n\t\t\tthrow new CKEditorError( 'view-writer-insert-invalid-node', errorContext );\n\t\t}\n\n\t\tif ( !node.is( 'text' ) ) {\n\t\t\tvalidateNodesToInsert( node.getChildren(), errorContext );\n\t\t}\n\t}\n}\n\nconst validNodesToInsert = [ Text, AttributeElement, ContainerElement, EmptyElement, UIElement ];\n\n// Checks if node is ContainerElement or DocumentFragment, because in most cases they should be treated the same way.\n//\n// @param {module:engine/view/node~Node} node\n// @returns {Boolean} Returns `true` if node is instance of ContainerElement or DocumentFragment.\nfunction isContainerOrFragment( node ) {\n\treturn node && ( node.is( 'containerElement' ) || node.is( 'documentFragment' ) );\n}\n\n// Checks if {@link module:engine/view/range~Range#start range start} and {@link module:engine/view/range~Range#end range end} are placed\n// inside same {@link module:engine/view/containerelement~ContainerElement container element}.\n// Throws {@link module:utils/ckeditorerror~CKEditorError CKEditorError} `view-writer-invalid-range-container` when validation fails.\n//\n// @param {module:engine/view/range~Range} range\n// @param {Object} errorContext\nfunction validateRangeContainer( range, errorContext ) {\n\tconst startContainer = getParentContainer( range.start );\n\tconst endContainer = getParentContainer( range.end );\n\n\tif ( !startContainer || !endContainer || startContainer !== endContainer ) {\n\t\t/**\n\t\t * Range container is invalid. This can happen if {@link module:engine/view/range~Range#start range start} and\n\t\t * {@link module:engine/view/range~Range#end range end} positions are not placed inside same container or\n\t\t * parent container for these positions cannot be found.\n\t\t *\n\t\t * @error view-writer-invalid-range-container\n\t\t */\n\n\t\tthrow new CKEditorError( 'view-writer-invalid-range-container', errorContext );\n\t}\n}\n\n// Checks if two attribute elements can be joined together. Elements can be joined together if, and only if\n// they do not have ids specified.\n//\n// @private\n// @param {module:engine/view/element~Element} a\n// @param {module:engine/view/element~Element} b\n// @returns {Boolean}\nfunction canBeJoined( a, b ) {\n\treturn a.id === null && b.id === null;\n}\n","/**\n * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/dom/istext\n */\n\n/**\n * Checks if the object is a native DOM Text node.\n *\n * @param {*} obj\n * @returns {Boolean}\n */\nexport default function isText( obj ) {\n\treturn Object.prototype.toString.call( obj ) == '[object Text]';\n}\n","/**\n * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\nimport { keyCodes } from '@ckeditor/ckeditor5-utils/src/keyboard';\nimport isText from '@ckeditor/ckeditor5-utils/src/dom/istext';\n\n/**\n * Set of utils related to block and inline fillers handling.\n *\n * Browsers do not allow to put caret in elements which does not have height. Because of it, we need to fill all\n * empty elements which should be selectable with elements or characters called \"fillers\". Unfortunately there is no one\n * universal filler, this is why two types are uses:\n *\n * * Block filler is an element which fill block elements, like `
`. CKEditor uses ` ` as a block filler during the editing,\n * as browsers do natively. So instead of an empty `
` there will be `
`. The advantage of block filler is that\n * it is transparent for the selection, so when the caret is before the ` ` and user presses right arrow he will be\n * moved to the next paragraph, not after the ` `. The disadvantage is that it breaks a block, so it can not be used\n * in the middle of a line of text. The {@link module:engine/view/filler~BR_FILLER ` ` filler} can be replaced with any other\n * character in the data output, for instance {@link module:engine/view/filler~NBSP_FILLER non-breaking space}.\n *\n * * Inline filler is a filler which does not break a line of text, so it can be used inside the text, for instance in the empty\n * `` surrendered by text: `foobar`, if we want to put the caret there. CKEditor uses a sequence of the zero-width\n * spaces as an {@link module:engine/view/filler~INLINE_FILLER inline filler} having the predetermined\n * {@link module:engine/view/filler~INLINE_FILLER_LENGTH length}. A sequence is used, instead of a single character to\n * avoid treating random zero-width spaces as the inline filler. Disadvantage of the inline filler is that it is not\n * transparent for the selection. The arrow key moves the caret between zero-width spaces characters, so the additional\n * code is needed to handle the caret.\n *\n * Both inline and block fillers are handled by the {@link module:engine/view/renderer~Renderer renderer} and are not present in the\n * view.\n *\n * @module engine/view/filler\n */\n\n/**\n * Non-breaking space filler creator. This is a function which creates ` ` text node.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~BR_FILLER\n * @function\n */\nexport const NBSP_FILLER = domDocument => domDocument.createTextNode( '\\u00A0' );\n\n/**\n * ` ` filler creator. This is a function which creates ` ` element.\n * It defines how the filler is created.\n *\n * @see module:engine/view/filler~NBSP_FILLER\n * @function\n */\nexport const BR_FILLER = domDocument => {\n\tconst fillerBr = domDocument.createElement( 'br' );\n\tfillerBr.dataset.ckeFiller = true;\n\n\treturn fillerBr;\n};\n\n/**\n * Length of the {@link module:engine/view/filler~INLINE_FILLER INLINE_FILLER}.\n */\nexport const INLINE_FILLER_LENGTH = 7;\n\n/**\n * Inline filler which is a sequence of the zero width spaces.\n */\nexport const INLINE_FILLER = ( () => {\n\tlet inlineFiller = '';\n\n\tfor ( let i = 0; i < INLINE_FILLER_LENGTH; i++ ) {\n\t\tinlineFiller += '\\u200b';\n\t}\n\n\treturn inlineFiller;\n} )(); // Usu IIF so the INLINE_FILLER appears as a constant in the docs.\n\n/**\n * Checks if the node is a text node which starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // true\n *\t\tstartsWithFiller( document.createTextNode( 'foo' ) ); // false\n *\t\tstartsWithFiller( document.createElement( 'p' ) ); // false\n *\n * @param {Node} domNode DOM node.\n * @returns {Boolean} True if the text node starts with the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function startsWithFiller( domNode ) {\n\treturn isText( domNode ) && ( domNode.data.substr( 0, INLINE_FILLER_LENGTH ) === INLINE_FILLER );\n}\n\n/**\n * Checks if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n *\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER ) ); // true\n *\t\tisInlineFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ); // false\n *\n * @param {Text} domText DOM text node.\n * @returns {Boolean} True if the text node contains only the {@link module:engine/view/filler~INLINE_FILLER inline filler}.\n */\nexport function isInlineFiller( domText ) {\n\treturn domText.data.length == INLINE_FILLER_LENGTH && startsWithFiller( domText );\n}\n\n/**\n * Get string data from the text node, removing an {@link module:engine/view/filler~INLINE_FILLER inline filler} from it,\n * if text node contains it.\n *\n *\t\tgetDataWithoutFiller( document.createTextNode( INLINE_FILLER + 'foo' ) ) == 'foo' // true\n *\t\tgetDataWithoutFiller( document.createTextNode( 'foo' ) ) == 'foo' // true\n *\n * @param {Text} domText DOM text node, possible with inline filler.\n * @returns {String} Data without filler.\n */\nexport function getDataWithoutFiller( domText ) {\n\tif ( startsWithFiller( domText ) ) {\n\t\treturn domText.data.slice( INLINE_FILLER_LENGTH );\n\t} else {\n\t\treturn domText.data;\n\t}\n}\n\n/**\n * Assign key observer which move cursor from the end of the inline filler to the beginning of it when\n * the left arrow is pressed, so the filler does not break navigation.\n *\n * @param {module:engine/view/view~View} view View controller instance we should inject quirks handling on.\n */\nexport function injectQuirksHandling( view ) {\n\tview.document.on( 'keydown', jumpOverInlineFiller );\n}\n\n// Move cursor from the end of the inline filler to the beginning of it when, so the filler does not break navigation.\nfunction jumpOverInlineFiller( evt, data ) {\n\tif ( data.keyCode == keyCodes.arrowleft ) {\n\t\tconst domSelection = data.domTarget.ownerDocument.defaultView.getSelection();\n\n\t\tif ( domSelection.rangeCount == 1 && domSelection.getRangeAt( 0 ).collapsed ) {\n\t\t\tconst domParent = domSelection.getRangeAt( 0 ).startContainer;\n\t\t\tconst domOffset = domSelection.getRangeAt( 0 ).startOffset;\n\n\t\t\tif ( startsWithFiller( domParent ) && domOffset <= INLINE_FILLER_LENGTH ) {\n\t\t\t\tdomSelection.collapse( domParent, 0 );\n\t\t\t}\n\t\t}\n\t}\n}\n","/**\n * @license Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.\n * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license\n */\n\n/**\n * @module utils/fastdiff\n */\n\n/**\n * Finds positions of the first and last change in the given string/array and generates a set of changes:\n *\n *\t\tfastDiff( '12a', '12xyza' );\n *\t\t// [ { index: 2, type: 'insert', values: [ 'x', 'y', 'z' ] } ]\n *\n *\t\tfastDiff( '12a', '12aa' );\n *\t\t// [ { index: 3, type: 'insert', values: [ 'a' ] } ]\n *\n *\t\tfastDiff( '12xyza', '12a' );\n *\t\t// [ { index: 2, type: 'delete', howMany: 3 } ]\n *\n *\t\tfastDiff( [ '1', '2', 'a', 'a' ], [ '1', '2', 'a' ] );\n *\t\t// [ { index: 3, type: 'delete', howMany: 1 } ]\n *\n *\t\tfastDiff( [ '1', '2', 'a', 'b', 'c', '3' ], [ '2', 'a', 'b' ] );\n *\t\t// [ { index: 0, type: 'insert', values: [ '2', 'a', 'b' ] }, { index: 3, type: 'delete', howMany: 6 } ]\n *\n * Passed arrays can contain any type of data, however to compare them correctly custom comparator function\n * should be passed as a third parameter:\n *\n *\t\tfastDiff( [ { value: 1 }, { value: 2 } ], [ { value: 1 }, { value: 3 } ], ( a, b ) => {\n *\t\t\treturn a.value === b.value;\n *\t\t} );\n *\t\t// [ { index: 1, type: 'insert', values: [ { value: 3 } ] }, { index: 2, type: 'delete', howMany: 1 } ]\n *\n * The resulted set of changes can be applied to the input in order to transform it into the output, for example:\n *\n *\t\tlet input = '12abc3';\n *\t\tconst output = '2ab';\n *\t\tconst changes = fastDiff( input, output );\n *\n *\t\tchanges.forEach( change => {\n *\t\t\tif ( change.type == 'insert' ) {\n *\t\t\t\tinput = input.substring( 0, change.index ) + change.values.join( '' ) + input.substring( change.index );\n *\t\t\t} else if ( change.type == 'delete' ) {\n *\t\t\t\tinput = input.substring( 0, change.index ) + input.substring( change.index + change.howMany );\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// input equals output now\n *\n * or in case of arrays:\n *\n *\t\tlet input = [ '1', '2', 'a', 'b', 'c', '3' ];\n *\t\tconst output = [ '2', 'a', 'b' ];\n *\t\tconst changes = fastDiff( input, output );\n *\n *\t\tchanges.forEach( change => {\n *\t\t\tif ( change.type == 'insert' ) {\n *\t\t\t\tinput = input.slice( 0, change.index ).concat( change.values, input.slice( change.index ) );\n *\t\t\t} else if ( change.type == 'delete' ) {\n *\t\t\t\tinput = input.slice( 0, change.index ).concat( input.slice( change.index + change.howMany ) );\n *\t\t\t}\n *\t\t} );\n *\n *\t\t// input equals output now\n *\n * By passing `true` as the fourth parameter (`atomicChanges`) the output of this function will become compatible with\n * the {@link module:utils/diff~diff `diff()`} function:\n *\n *\t\tfastDiff( '12a', '12xyza' );\n *\t\t// [ 'equal', 'equal', 'insert', 'insert', 'insert', 'equal' ]\n *\n * The default output format of this function is compatible with the output format of\n * {@link module:utils/difftochanges~diffToChanges `diffToChanges()`}. The `diffToChanges()` input format is, in turn,\n * compatible with the output of {@link module:utils/diff~diff `diff()`}:\n *\n *\t\tconst a = '1234';\n *\t\tconst b = '12xyz34';\n *\n *\t\t// Both calls will return the same results (grouped changes format).\n *\t\tfastDiff( a, b );\n *\t\tdiffToChanges( diff( a, b ) );\n *\n *\t\t// Again, both calls will return the same results (atomic changes format).\n *\t\tfastDiff( a, b, null, true );\n *\t\tdiff( a, b );\n *\n *\n * @param {Array|String} a Input array or string.\n * @param {Array|String} b Input array or string.\n * @param {Function} [cmp] Optional function used to compare array values, by default `===` (strict equal operator) is used.\n * @param {Boolean} [atomicChanges=false] Whether an array of `inset|delete|equal` operations should\n * be returned instead of changes set. This makes this function compatible with {@link module:utils/diff~diff `diff()`}.\n * @returns {Array} Array of changes.\n */\nexport default function fastDiff( a, b, cmp, atomicChanges = false ) {\n\t// Set the comparator function.\n\tcmp = cmp || function( a, b ) {\n\t\treturn a === b;\n\t};\n\n\t// Convert the string (or any array-like object - eg. NodeList) to an array by using the slice() method because,\n\t// unlike Array.from(), it returns array of UTF-16 code units instead of the code points of a string.\n\t// One code point might be a surrogate pair of two code units. All text offsets are expected to be in code units.\n\t// See ckeditor/ckeditor5#3147.\n\t//\n\t// We need to make sure here that fastDiff() works identical to diff().\n\tif ( !Array.isArray( a ) ) {\n\t\ta = Array.prototype.slice.call( a );\n\t}\n\n\tif ( !Array.isArray( b ) ) {\n\t\tb = Array.prototype.slice.call( b );\n\t}\n\n\t// Find first and last change.\n\tconst changeIndexes = findChangeBoundaryIndexes( a, b, cmp );\n\n\t// Transform into changes array.\n\treturn atomicChanges ? changeIndexesToAtomicChanges( changeIndexes, b.length ) : changeIndexesToChanges( b, changeIndexes );\n}\n\n// Finds position of the first and last change in the given arrays. For example:\n//\n//\t\tconst indexes = findChangeBoundaryIndexes( [ '1', '2', '3', '4' ], [ '1', '3', '4', '2', '4' ] );\n//\t\tconsole.log( indexes ); // { firstIndex: 1, lastIndexOld: 3, lastIndexNew: 4 }\n//\n// The above indexes means that in the first array the modified part is `1[23]4` and in the second array it is `1[342]4`.\n// Based on such indexes, array with `insert`/`delete` operations which allows transforming first value into the second one\n// can be generated.\n//\n// @param {Array} arr1\n// @param {Array} arr2\n// @param {Function} cmp Comparator function.\n// @returns {Object}\n// @returns {Number} return.firstIndex Index of the first change in both values (always the same for both).\n// @returns {Number} result.lastIndexOld Index of the last common value in `arr1`.\n// @returns {Number} result.lastIndexNew Index of the last common value in `arr2`.\nfunction findChangeBoundaryIndexes( arr1, arr2, cmp ) {\n\t// Find the first difference between passed values.\n\tconst firstIndex = findFirstDifferenceIndex( arr1, arr2, cmp );\n\n\t// If arrays are equal return -1 indexes object.\n\tif ( firstIndex === -1 ) {\n\t\treturn { firstIndex: -1, lastIndexOld: -1, lastIndexNew: -1 };\n\t}\n\n\t// Remove the common part of each value and reverse them to make it simpler to find the last difference between them.\n\tconst oldArrayReversed = cutAndReverse( arr1, firstIndex );\n\tconst newArrayReversed = cutAndReverse( arr2, firstIndex );\n\n\t// Find the first difference between reversed values.\n\t// It should be treated as \"how many elements from the end the last difference occurred\".\n\t//\n\t// For example:\n\t//\n\t// \t\t\t\tinitial\t->\tafter cut\t-> reversed:\n\t// oldValue:\t'321ba'\t->\t'21ba'\t\t-> 'ab12'\n\t// newValue:\t'31xba'\t->\t'1xba'\t\t-> 'abx1'\n\t// lastIndex:\t\t\t\t\t\t\t-> 2\n\t//\n\t// So the last change occurred two characters from the end of the arrays.\n\tconst lastIndex = findFirstDifferenceIndex( oldArrayReversed, newArrayReversed, cmp );\n\n\t// Use `lastIndex` to calculate proper offset, starting from the beginning (`lastIndex` kind of starts from the end).\n\tconst lastIndexOld = arr1.length - lastIndex;\n\tconst lastIndexNew = arr2.length - lastIndex;\n\n\treturn { firstIndex, lastIndexOld, lastIndexNew };\n}\n\n// Returns a first index on which given arrays differ. If both arrays are the same, -1 is returned.\n//\n// @param {Array} arr1\n// @param {Array} arr2\n// @param {Function} cmp Comparator function.\n// @returns {Number}\nfunction findFirstDifferenceIndex( arr1, arr2, cmp ) {\n\tfor ( let i = 0; i < Math.max( arr1.length, arr2.length ); i++ ) {\n\t\tif ( arr1[ i ] === undefined || arr2[ i ] === undefined || !cmp( arr1[ i ], arr2[ i ] ) ) {\n\t\t\treturn i;\n\t\t}\n\t}\n\n\treturn -1; // Return -1 if arrays are equal.\n}\n\n// Returns a copy of the given array with `howMany` elements removed starting from the beginning and in reversed order.\n//\n// @param {Array} arr Array to be processed.\n// @param {Number} howMany How many elements from array beginning to remove.\n// @returns {Array} Shortened and reversed array.\nfunction cutAndReverse( arr, howMany ) {\n\treturn arr.slice( howMany ).reverse();\n}\n\n// Generates changes array based on change indexes from `findChangeBoundaryIndexes` function. This function will\n// generate array with 0 (no changes), 1 (deletion or insertion) or 2 records (insertion and deletion).\n//\n// @param {Array} newArray New array for which change indexes were calculated.\n// @param {Object} changeIndexes Change indexes object from `findChangeBoundaryIndexes` function.\n// @returns {Array.