class ConcordanceQueryBuilder {

    constructor() {

    
      this.positionalAttrList = {
        "emptyToken": {prettyText: "empty token", cqlOpening: "[", tokenValue:"", cqlClosing: "]"},
        "word": {prettyText: "word", cqlOpening: "[word=", tokenValue: "", cqlClosing: "]"},
        "lemma": {prettyText: "lemma", cqlOpening: "[lemma=", tokenValue:"", cqlClosing: "]"},
        "pos": {prettyText: "pos", cqlOpening: "[pos=", tokenValue:"",  cqlClosing: "]"},
        "simplePos": {prettyText: "simple_pos", cqlOpening: "[simple_pos=", tokenValue:"", cqlClosing: "]"}
      }  

      this.elements = {
        
        counter: 0,
        yourQueryContent: [],
        queryContent:[],

        //#region QueryBuilder Elements
        concordanceQueryBuilder: document.querySelector("#concordance-query-builder"),
        concordanceQueryBuilderButton: document.querySelector("#concordance-query-builder-button"),
        positionalAttr: document.querySelector("#token-attr"),
        structuralAttr: document.querySelector("#structural-attr"),
        buttonPreparer: document.querySelector("#button-preparer"),
        yourQuery: document.querySelector("#your-query"),
        insertQueryButton: document.querySelector("#insert-query-button"),
        tokenQuery: document.querySelector("#token-query"),
        tokenBuilderContent: document.querySelector("#token-builder-content"),
        buildTokenButton: document.querySelector("#build-token-button"),
        extFormQuery: document.querySelector('#concordance-extension-form-query'),
        
        
        //#endregion QueryBuilder Elements

        //#region Strucutral Attributes
       
        sentence:document.querySelector("#sentence"),
        entity: document.querySelector("#entity"),
        textAnnotation: document.querySelector("#text-annotation"),

        entityBuilder: document.querySelector("#entity-builder"),
        englishEntType: document.querySelector("#english-ent-type"),
        germanEntType: document.querySelector("#german-ent-type"),
        emptyEntity: document.querySelector("#empty-entity"),
        entityAnyType: false,

        textAnnotationBuilder: document.querySelector("#text-annotation-builder"),
        textAnnotationOptions: document.querySelector("#text-annotation-options"),
        textAnnotationInput: document.querySelector("#text-annotation-input"),
        textAnnotationSubmit: document.querySelector("#text-annotation-submit"),
        //#endregion Structural Attributes

        //#region Token Attributes
        tokenCounter: 0,

        lemma: document.querySelector("#lemma"),
        emptyToken: document.querySelector("#empty-token"),
        word: document.querySelector("#word"),
        lemma: document.querySelector("#lemma"),
        pos: document.querySelector("#pos"),
        simplePosButton: document.querySelector("#simple-pos-button"),
        incidenceModifiers: document.querySelector("[data-target='incidence-modifiers']"),
        or: document.querySelector("#or"),
        and: document.querySelector("#and"),


        //#region Word and Lemma Elements
        wordBuilder: document.querySelector("#word-builder"),
        lemmaBuilder: document.querySelector("#lemma-builder"),
        inputOptions: document.querySelector("#input-options"),
        wordInput: document.querySelector("#word-input"),
        wordSubmit: document.querySelector("#word-submit"),
        lemmaInput: document.querySelector("#lemma-input"),
        lemmaSubmit: document.querySelector("#lemma-submit"),
        ignoreCaseCheckbox : document.querySelector("#ignore-case-checkbox"),
        ignoreCase: document.querySelector("input[type='checkbox']"),
        wildcardChar: document.querySelector("#wildcard-char"),
        optionGroup: document.querySelector("#option-group"),
        incidenceModifiersTB: document.querySelector("[data-target='incidence-modifiers-text-builder']"),
        //#endregion Word and Lemma Elements

        //#region posBuilder Elements
        posBuilder: document.querySelector("#pos-builder"),
        englishPos: document.querySelector("#english-pos"),
        germanPos: document.querySelector("#german-pos"),
        //#endregion posBuilder Elements

        //#region simple_posBuilder Elements
        simplePosBuilder: document.querySelector("#simplepos-builder"),
        simplePos: document.querySelector("#simple-pos"),
        //#endregion simple_posBuilder Elements

        //#region incidence modifiers
        oneOrMore: document.querySelector("#one-or-more"),
        zeroOrMore: document.querySelector("#zero-or-more"),
        zeroOrOne: document.querySelector("#zero-or-one"),
        exactlyN: document.querySelector("#exactlyN"),
        betweenNM: document.querySelector("#betweenNM"),
        nInput: document.querySelector("#n-input"),
        nSubmit: document.querySelector("#n-submit"),
        nmInput: document.querySelector("#n-m-input"),
        mInput: document.querySelector("#m-input"),
        nmSubmit: document.querySelector("#n-m-submit"),

        oneOrMoreTB: document.querySelector("#one-or-more-tb"),
        zeroOrMoreTB: document.querySelector("#zero-or-more-tb"),
        zeroOrOneTB: document.querySelector("#zero-or-one-tb"),
        exactlyNTB: document.querySelector("#exactly-n-tb"),
        betweenNMTB: document.querySelector("#between-n-m-tb")
        //#endregion incidence modifiers

        //#endregion Token Attributes
      }

      this.elements.concordanceQueryBuilderButton.addEventListener("click", () => {this.clearAll();});
      this.elements.insertQueryButton.addEventListener("click", () => {this.insertQuery();});

      //#region Structural Attribute Event Listeners
      this.elements.sentence.addEventListener("click", () => {this.addSentence();});
      this.elements.entity.addEventListener("click", () => {this.addEntity();});
      this.elements.textAnnotation.addEventListener("click", () => {this.addTextAnnotation();});

      this.elements.englishEntType.addEventListener("change", () => {this.englishEntTypeHandler();});
      this.elements.germanEntType.addEventListener("change", () => {this.germanEntTypeHandler();});
      this.elements.emptyEntity.addEventListener("click", () => {this.emptyEntityButton();});
      
      this.elements.textAnnotationSubmit.addEventListener("click", () => {this.textAnnotationSubmitHandler();});

      //#endregion
      
      //#region Token Attribute Event Listeners
      this.elements.buildTokenButton.addEventListener("click", () => {this.addToken();});
      this.elements.emptyToken.addEventListener("click", () => {this.emptyTokenHandler();});
      this.elements.word.addEventListener("click", () => {this.wordBuilder();});
      this.elements.lemma.addEventListener("click", () => {this.lemmaBuilder();});
      this.elements.pos.addEventListener("click", () => {this.posBuilder();});
      this.elements.simplePosButton.addEventListener("click", () => {this.simplePosBuilder();});    
      this.elements.or.addEventListener("click", () => {this.orHandler();});
      this.elements.and.addEventListener("click", () => {this.andHandler();});

      this.elements.ignoreCase.addEventListener("change", () => {this.inputOptionHandler(this.elements.ignoreCase);});
      this.elements.wildcardChar.addEventListener("click", () => {this.inputOptionHandler(this.elements.wildcardChar);});
      this.elements.optionGroup.addEventListener("click", () => {this.inputOptionHandler(this.elements.optionGroup);});
      this.elements.wordSubmit.addEventListener("click", () => {this.textSubmit();});
      this.elements.lemmaSubmit.addEventListener("click", () => {this.textSubmit();});

      this.elements.englishPos.addEventListener("change", () => {this.englishPosHandler();});
      this.elements.germanPos.addEventListener("change", () => {this.germanPosHandler();});
      this.elements.simplePos.addEventListener("change", () => {this.simplePosHandler();});

      this.elements.oneOrMore.addEventListener("click", () => {this.incidenceModifiersHandler(this.elements.oneOrMore);});
      this.elements.zeroOrMore.addEventListener("click", () => {this.incidenceModifiersHandler(this.elements.zeroOrMore);});
      this.elements.zeroOrOne.addEventListener("click", () => {this.incidenceModifiersHandler(this.elements.zeroOrOne);});
      this.elements.nSubmit.addEventListener("click", () => {this.nSubmitHandler();});
      this.elements.nmSubmit.addEventListener("click", () => {this.nmSubmitHandler();});

      this.elements.oneOrMoreTB.addEventListener("click", () => {this.incidenceModifiersHandlerTB(this.elements.oneOrMoreTB);});
      this.elements.zeroOrMoreTB.addEventListener("click", () => {this.incidenceModifiersHandlerTB(this.elements.zeroOrMoreTB);});
      this.elements.zeroOrOneTB.addEventListener("click", () => {this.incidenceModifiersHandlerTB(this.elements.zeroOrOneTB);});
      this.elements.exactlyNTB.addEventListener("click", () => {this.incidenceModifiersHandlerTB(this.elements.exactlyNTB);});
      this.elements.betweenNMTB.addEventListener("click", () => {this.incidenceModifiersHandlerTB(this.elements.betweenNMTB);});
    
    
      //#endregion Token Attribute Event Listeners


    }

    //#region Structural Attribute Builder Functions
    addSentence() {
        this.hideEverything();
        if(this.elements.sentence.text === 'End Sentence') {
            this.buttonfactory('end-sentence', 'Sentence End', '</s>');
            this.elements.sentence.innerHTML = 'Sentence';
            this.elements.insertQueryButton.classList.remove("disabled");
            this.elements.counter += 1;
        } else {
            this.buttonfactory('start-sentence', 'Sentence Start', '<s>');
            this.elements.queryContent.push("sentence");
            this.elements.sentence.innerHTML = 'End Sentence';
        }
    }

    addEntity() {
        if(this.elements.entity.text === 'End Entity'){
            let queryText;
            if (this.elements.entityAnyType === false){
                queryText = '</ent_type>'; 
            } else {
                queryText = '</ent>';
            }
            this.buttonfactory('end-entity', 'Entity End', queryText);
            this.elements.entity.innerHTML = 'Entity';
            this.elements.insertQueryButton.classList.remove("disabled");
            this.elements.counter += 1;
            
        } else {
            this.hideEverything();
            this.elements.entityBuilder.classList.remove("hide");
        }
    }

    englishEntTypeHandler() {
        
        this.buttonfactory('start-entity', 'Entity Type=' + this.elements.englishEntType.value, '<ent_type="' + this.elements.englishEntType.value + '">');
        this.elements.entity.innerHTML = 'End Entity';
        this.hideEverything();
        this.elements.entityAnyType = false;
        
    }

    germanEntTypeHandler() {
        
        this.buttonfactory('start-entity', 'Entity Type=' + this.elements.germanEntType.value, '<ent_type="' + this.elements.germanEntType.value + '">');
        this.elements.entity.innerHTML = 'End Entity';
        this.hideEverything();
        this.elements.entityAnyType = false;
        
    }

    emptyEntityButton() {
        this.buttonfactory('start-empty-entity', 'Entity Start', '<ent>');
        this.elements.entity.innerHTML = 'End Entity';
        this.hideEverything();
        this.elements.entityAnyType = true;
    }

    addTextAnnotation() {
        this.hideEverything();
        this.elements.textAnnotationBuilder.classList.remove("hide");
        
    }

    textAnnotationSubmitHandler() {
        let queryText = ':: match.text_' + this.elements.textAnnotationOptions.value + '="' + this.elements.textAnnotationInput.value + '"';
        this.buttonfactory('text-annotation', this.elements.textAnnotationOptions.value + '= ' + this.elements.textAnnotationInput.value, queryText);
        this.elements.insertQueryButton.classList.remove("disabled");
        this.elements.counter+=1;
        this.hideEverything();
        this.elements.textAnnotationInput.value = '';
    }

   
    //#endregion Structural Attribute Builder Functions

    //#region Token Attribute Builder Functions
    emptyTokenHandler() {
        this.hideEverything();
        this.elements.incidenceModifiers.classList.remove('hide');
        this.tokenButtonfactory('emptyToken', 'empty token', '[]');
        this.buttonDisabler('empty');
        this.elements.buildTokenButton.classList.remove("disabled");
        this.elements.tokenCounter+=1;
    }

    wordBuilder() {
        this.elements.incidenceModifiers.classList.add('hide');
        this.hideEverything();
        this.elements.wordBuilder.classList.remove("hide");
        this.elements.inputOptions.classList.remove("hide");
        this.elements.ignoreCaseCheckbox.classList.remove("hide");
        this.elements.incidenceModifiersTB.classList.remove('disabled');
    }

    lemmaBuilder() {
        this.elements.incidenceModifiers.classList.add('hide');
        this.hideEverything();
        this.elements.lemmaBuilder.classList.remove("hide");
        this.elements.inputOptions.classList.remove("hide");
        this.elements.ignoreCaseCheckbox.classList.remove("hide");
        this.elements.incidenceModifiersTB.classList.remove('disabled');
    }

    inputOptionHandler(elem) {
        let input;

        if (this.elements.wordBuilder.classList.contains('hide') === false){
            input = this.elements.wordInput;
        }else{
            input =  this.elements.lemmaInput;
        }

        if (elem === this.elements.optionGroup) {
            input.value  += '( option1 | option2 )';
            let firstIndex = input.value.indexOf('option1');
            let lastIndex = firstIndex + 'option1'.length;
            input.focus();
            input.setSelectionRange(firstIndex, lastIndex);
        }else if (elem === this.elements.wildcardChar){
            input.value  += '.';
        }
    }
    
    textSubmit() {
        this.buttonDisabler();
        this.elements.incidenceModifiers.classList.remove("disabled");
        let c;

        if (this.elements.ignoreCase.checked){
            c = ' %c';
        }else{
            c = '';
        }

        if (this.elements.wordBuilder.classList.contains('hide') === false){
            this.tokenButtonfactory('word', 'word=' + this.elements.wordInput.value + c, 'word="'+ this.elements.wordInput.value + '"' + c );
            this.elements.buildTokenButton.classList.remove("disabled");
            this.elements.tokenCounter+=1;
            this.elements.wordInput.value = '';
        }else if (this.elements.lemmaBuilder.classList.contains('hide') === false){
            this.tokenButtonfactory('lemma', 'lemma=' + this.elements.lemmaInput.value + c, 'lemma="'+ this.elements.lemmaInput.value + '"'  + c);
            this.elements.buildTokenButton.classList.remove("disabled");
            this.elements.tokenCounter+=1;
            this.elements.lemmaInput.value = '';
        }
    }

    posBuilder() {
        this.hideEverything();
        this.elements.incidenceModifiers.classList.remove('hide');
        this.elements.positionalAttr.appendChild(this.elements.incidenceModifiers);
        this.elements.posBuilder.classList.remove("hide");
    }

    englishPosHandler() {
        this.buttonDisabler();
        this.tokenButtonfactory('pos', 'pos=' + this.elements.englishPos.value, 'pos="' + this.elements.englishPos.value + '"');
        this.elements.buildTokenButton.classList.remove("disabled");
        this.elements.tokenCounter+=1;
    }

    germanPosHandler() {
        this.buttonDisabler();
        this.tokenButtonfactory('pos', 'pos=' + this.elements.germanPos.value, 'pos="' + this.elements.germanPos.value + '"');
        this.elements.buildTokenButton.classList.remove("disabled");
        this.elements.tokenCounter+=1;
    }

    simplePosBuilder() {
        this.hideEverything();
        this.elements.incidenceModifiers.classList.remove('hide');
        this.elements.positionalAttr.appendChild(this.elements.incidenceModifiers);
        this.elements.simplePosBuilder.classList.remove("hide");
    }

    simplePosHandler() {
        this.buttonDisabler();
        this.tokenButtonfactory('simplePos', 'simple_pos=' + this.elements.simplePos.value, 'simple_pos="' + this.elements.simplePos.value + '"');
        this.elements.buildTokenButton.classList.remove("disabled");
        this.elements.tokenCounter+=1;
    }

    incidenceModifiersHandler(input) {
        
        this.tokenButtonfactory('incidenceModifier', input.text, input.dataset.token);
        this.elements.incidenceModifiers.classList.add("disabled");
        this.elements.tokenCounter+=1;
    }

    nSubmitHandler() {
        this.tokenButtonfactory('exactlyN', 'Exactly ' + this.elements.nInput.value, '{' + this.elements.nInput.value + '}');
        let instance = M.Modal.getInstance(this.elements.exactlyN);
        instance.close();
        this.elements.incidenceModifiers.classList.add('disabled');

    }

    nmSubmitHandler() {
        this.tokenButtonfactory('betweenNM', 'Between ' + this.elements.nmInput.value + ' and ' + this.elements.mInput.value, '{' + this.elements.nmInput.value + ',' + this.elements.mInput.value + '}');
        let instance = M.Modal.getInstance(this.elements.betweenNM);
        instance.close();
        this.elements.incidenceModifiers.classList.add('disabled');
    }

    // TB = Text Builder
    incidenceModifiersHandlerTB(elem) {
        let input;

        if (this.elements.wordBuilder.classList.contains('hide') === false){
            input = this.elements.wordInput;
        }else{
            input =  this.elements.lemmaInput;
        }
        if (elem.id === 'exactly-n-tb'){
            input.value += elem.dataset.token;
            let index = input.value.lastIndexOf('{n}');
            let instance = M.Dropdown.getInstance(this.elements.incidenceModifiersTB);
            instance.close();
            input.focus();
            input.setSelectionRange(index+1, index+2);
        }else if (elem.id === 'between-n-m-tb') {
            input.value += elem.dataset.token;
            let index = input.value.lastIndexOf('{n,m}');
            let instance = M.Dropdown.getInstance(this.elements.incidenceModifiersTB);
            instance.close();
            input.focus();
            input.setSelectionRange(index+1, index+2);
        }else {
            input.value += ' ' + elem.dataset.token;
        }

        this.elements.incidenceModifiersTB.classList.add('disabled');
    }

    orHandler() {
        this.elements.positionalAttr.appendChild(this.elements.incidenceModifiers);
        this.buttonDisabler('condition');
        this.hideEverything();
        this.tokenButtonfactory('or', 'or', '|');
        this.elements.buildTokenButton.classList.remove("disabled");
        this.elements.tokenCounter+=1;
    }

    andHandler() {
        this.elements.positionalAttr.appendChild(this.elements.incidenceModifiers);
        this.buttonDisabler('condition');
        this.hideEverything();
        this.tokenButtonfactory('and', 'and', '&');
        this.elements.buildTokenButton.classList.remove("disabled");
        this.elements.tokenCounter+=1;
    }

    hideEverything(){
        
        this.elements.wordBuilder.classList.add("hide");
        this.elements.lemmaBuilder.classList.add("hide");
        this.elements.ignoreCaseCheckbox.classList.add("hide");
        this.elements.inputOptions.classList.add("hide");
        this.elements.posBuilder.classList.add("hide");
        this.elements.simplePosBuilder.classList.add("hide");
        this.elements.entityBuilder.classList.add("hide");
        this.elements.textAnnotationBuilder.classList.add("hide");
    }

    buttonDisabler(attr = 'token') {
        let tokenButtonList = this.elements.positionalAttr.querySelectorAll("a");
        if (attr === 'start'){
            tokenButtonList.forEach(element => {
                if (element.id === 'or'){
                    element.classList.add("disabled");
                } else if (element.id === 'and'){
                    element.classList.add("disabled");
                }else if (element.dataset.target == 'incidence-modifiers') {
                    element.classList.add("disabled");
                } else if (element.id === 'empty-token'){
                    element.classList.remove("disabled");
                } else {
                    element.classList.remove("disabled");
                }  
            });
        }else if (attr === 'condition'){
            tokenButtonList.forEach(element => {
                if (element.id === 'or'){
                    element.classList.add("disabled");
                } else if (element.id === 'and'){
                    element.classList.add("disabled");
                }else if (element.dataset.target == 'incidence-modifiers') {
                    element.classList.add("disabled");
                } else if (element.id === 'empty-token'){
                    element.classList.add("disabled");
                } else {
                    element.classList.remove("disabled");
                }  
            });
        }else if (attr === 'empty') {
            tokenButtonList.forEach(element => {
                if (element.id == 'or'){
                    element.classList.add("disabled");
                } else if (element.id == 'and'){
                    element.classList.add("disabled");
                }else if (element.dataset.target == 'incidence-modifiers') {
                    element.classList.remove("disabled");
                } else {
                    element.classList.add("disabled");
                } 
            });
        }else{
            tokenButtonList.forEach(element => {
                if (element.id == 'or'){
                    element.classList.remove("disabled");
                } else if (element.id == 'and'){
                    element.classList.remove("disabled");
                }else if (element.dataset.target == 'incidence-modifiers') {
                    element.classList.remove("disabled");
                } else {
                    element.classList.add("disabled");
                }  
            });
        }
        
    }

    tokenButtonfactory(dataType, prettyText, tokenText) {
        tokenText = encodeURI(tokenText);
        this.elements.buttonPreparer.innerHTML += '<a class="btn-small waves-effect waves-light" style="margin-left:3px" data-type="' + dataType + '" data-tokentext="' + tokenText + '">' + prettyText + '</a>';
        let tokenDummyButton = this.elements.buttonPreparer.querySelector(':first-child');
        tokenDummyButton.addEventListener("click", () => {this.deleteTokenAttr(tokenDummyButton);});
        this.elements.tokenQuery.appendChild(tokenDummyButton);
    }

    deleteTokenAttr(attr){
        let nodesList = attr.parentElement.childNodes;
        let indexOfAttr;

        for (let i = 0; i < nodesList.length; i++) {
            if(nodesList[i] === attr){
                indexOfAttr = i;
            }
        }

        if(indexOfAttr>0){
            if (attr.dataset.type === 'or' || attr.dataset.type === 'and') {
                this.elements.tokenQuery.removeChild(nodesList[indexOfAttr+1]);
                this.elements.tokenCounter-=1;

            }else {
                if (nodesList[indexOfAttr-1].dataset.type === 'or' || nodesList[indexOfAttr-1].dataset.type === 'and'){
                    this.elements.tokenQuery.removeChild(nodesList[indexOfAttr-1])
                    this.elements.tokenCounter-=1;
                }
            }
        }
        
        this.elements.tokenQuery.removeChild(attr);
        this.elements.tokenCounter-=1;

        if(this.elements.tokenCounter === 0){
            this.elements.buildTokenButton.classList.add("disabled");
            this.buttonDisabler('start');
            this.hideEverything();
        }
    }

    addToken() {
        let tokenQueryContent = '';
        let tokenQueryText = '';
        let emptyTokenCheck = false;

        for (let element of this.elements.tokenQuery.childNodes) {
            tokenQueryContent += ' ' + element.text + ' ';
            tokenQueryText += ' ' + decodeURI(element.dataset.tokentext);
            if (element.dataset.type === "emptyToken"){
                emptyTokenCheck = true;
            }
        }

        if (emptyTokenCheck === false){
            tokenQueryText = '[' + tokenQueryText + ']';
        }        

        this.buttonfactory('token', tokenQueryContent, tokenQueryText);
        tokenQueryContent = '';
        this.elements.tokenQuery.innerHTML = '';
        this.elements.tokenCounter = 0;
        this.elements.buildTokenButton.classList.add("disabled");
        this.hideEverything();
        this.buttonDisabler('start');
        this.elements.insertQueryButton.classList.remove("disabled");
        this.elements.counter += 1;
    }

    //#endregion Token Attribute Builder Functions

    //#region General Functions

    buttonfactory(dataType, prettyText, queryText) {
        queryText = encodeURI(queryText);
        this.elements.buttonPreparer.innerHTML += '<a class="btn-small waves-effect waves-light" style="margin-left:3px" data-type="' + dataType + '" data-query="' + queryText + '">' + prettyText + '</a>';
        let dummyButton = this.elements.buttonPreparer.querySelector(':first-child');
        dummyButton.addEventListener("click", () => {this.deleteAttr(dummyButton);});
        this.elements.yourQuery.appendChild(dummyButton);
    }

    deleteAttr(attr) {

        let siblingList = [];
        let nodesList = attr.parentElement.childNodes;
        let indexOfAttr;
        let connectedElement;

        // Why nodesList.indexOf(attr) doesn"t work?!
        for (let i = 0; i < nodesList.length; i++) {
            if(nodesList[i] === attr){
                indexOfAttr = i;
            }
        }

        switch (attr.dataset.type) {
            case 'start-sentence':
                for (let i = indexOfAttr; i < nodesList.length; i++) {
                    if (nodesList[i].dataset.type === 'end-sentence'){
                        siblingList.push(nodesList[i]);
                    } 
                }
                connectedElement = siblingList[0];
                if (connectedElement === undefined){
                    this.elements.sentence.innerHTML = 'Sentence';
                }
                break;
            case 'end-sentence':
                for (let i = 0; i < indexOfAttr; i++) {
                    if (nodesList[i].dataset.type === 'start-sentence'){
                        siblingList.push(nodesList[i]);
                    } 
                }
                connectedElement = siblingList[siblingList.length -1];
                break;
            case 'start-entity':
                for (let i = indexOfAttr; i < nodesList.length; i++) {
                    if (nodesList[i].dataset.type === 'end-entity'){
                        siblingList.push(nodesList[i]);
                    } 
                }
                connectedElement = siblingList[0];
                if (connectedElement === undefined){
                    this.elements.entity.innerHTML = 'Entity';
                }
                break;
            case 'end-entity':
                for (let i = 0; i < indexOfAttr; i++) {
                    if (nodesList[i].dataset.type === 'start-entity'){
                        siblingList.push(nodesList[i]);
                    } 
                }
                connectedElement = siblingList[siblingList.length -1];
                break;
            default:
                connectedElement = undefined;
                break;
        }
        
        if (connectedElement !== undefined ){
            this.elements.yourQuery.removeChild(connectedElement);
        }

        this.elements.yourQuery.removeChild(attr);
        
        this.elements.counter -= 1;
        if(this.elements.counter === 0){
            this.elements.insertQueryButton.classList.add("disabled");
            
        }
    }

    insertQuery() {
        this.elements.yourQueryContent = [];
        
        for (let element of this.elements.yourQuery.childNodes) {
            let queryElement = decodeURI(element.dataset.query);
            this.elements.yourQueryContent.push(queryElement);
        }

        let queryString = this.elements.yourQueryContent.join(' ');
        queryString += ";";

        this.elements.concordanceQueryBuilder.classList.add('modal-close');
        this.elements.extFormQuery.value = queryString;

    }

    clearAll() {
        this.elements.tokenQuery.innerHTML = '';
        this.elements.tokenCounter = 0;
        this.elements.counter = 0;
        this.elements.buildTokenButton.classList.add("disabled");
        this.elements.insertQueryButton.classList.add("disabled");
        this.elements.concordanceQueryBuilder.classList.remove('modal-close');
        this.hideEverything(); 
        this.buttonDisabler('start');
        this.elements.yourQuery.innerHTML = '';
    }
    //#endregion General Functions
}