User:For Each element In group ... Next/RefConsolidate.js

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/**
 * Copied from [[w:en:User:Kaniivel/RefConsolidate.js]] with modification
 * 
 * Reference Organizer is a Wikipedia gadget for organizing references in articles. With the gadget,
 * you can easily move all references into reference list template, or vice versa. You can select which references
 * to move based on citation count, or select references individually. The gadget detects all article's references
 * and lists them in a table, where you can see their current location (in reference list template or in article text),
 * sort references in various ways, and rename them.
 *
 * Copyright 2016–2017 Kaniivel
 *
 * Some parts of RefCon are derived from Wikipedia gadget ProveIt. Credit for these parts goes to:
 * Copyright 2008-2011 Georgia Tech Research Corporation, Atlanta, GA 30332-0415, ALL RIGHTS RESERVED
 * Copyright 2011- Matthew Flaschen
 * Rewritten, internationalized, enhanced and maintained by Felipe Schenone since 2014
 *
 * RefCon is available under the GNU Free Documentation License (http://www.gnu.org/copyleft/fdl.html),
 * the Creative Commons Attribution/Share-Alike License 3.0 (http://creativecommons.org/licenses/by-sa/3.0/),
 * and the GNU General Public License 2 (http://www.gnu.org/licenses/gpl-2.0.html)
 */

(function (mw, $) {

    var refcon = {

        /**
         * This variable holds edit textbox text that is modified throughout the script
         *
         * @type {string}
         */
        textBoxText: '',

        /**
         * This array holds reference template groups in the order that they appear in article
         *
         * @type {array}
         */
        templateGroups: [],

        /**
         * This array holds reference templates in the order that they appear in article
         *
         * @type {array}
         */

        refTemplates: [],

        /**
         * This array holds article text parts that are between reference templates
         *
         * @type {array}
         */

        textParts: [],

        /**
         * Object for user selectable sort options
         *
         * @type {object}
         */

        userOptions: {},

        /**
         * Convenience method to get a RefCon option
         *
         * @param {string} option key without the "refcon-" prefix
         * @return {string} option value
         */
        getOption: function (key) {
            return mw.config.get('refcon-' + key);
        },

        /**
         * Convenience method to get a RefCon message
         *
         * @param {string} message key without the "refcon-" prefix
         * @param {array} array of replacements
         * @return {string} message value
         */
        getMessage: function (key, param) {
            return new mw.Message(mw.messages, 'refcon-' + key, param).text();
        },

        /**
         * Convenience method to get the edit textbox
         *
         * @return {jQuery} edit textbox
         */
        getTextbox: function () {
            return $('#wpTextbox1');
        },

        /**
         * Initialization. Sets up script execution link. If the link is clicked, calls main function
         *
         * @return {void}
         */
        init: function () {

            $([refcon.getOption('image-yes'), refcon.getOption('image-no')]).each(function () {
                $('<img/>')[0].src = this;
            });

            var linkname = refcon.getOption('linkname'), linkhover = refcon.getOption('linkhover');

            // Add portlet link to the script
            if (document.getElementById('ca-edit')) {
                var url = mw.util.getUrl(mw.config.get('wgPageName'), {action: 'edit', RefCon: 'true'});
                var portletlink = $(mw.util.addPortletLink('p-cactions', url, linkname, 'ca-RefCon', linkhover, '', document.getElementById('ca-move')));
                // If the portlet link is clicked while on edit page, run the function and do stuff, don't load new page
                if (typeof document.forms.editform !== 'undefined') {
                    portletlink.on('click', function (e) {
                        e.preventDefault();
                        refcon.main();
                    });
                }
            }

            // Only load when editing
            var action = mw.config.get('wgAction');

            if (action === 'edit' || action === 'submit') {
                // Only if the portlet link was clicked
                if (mw.util.getParamValue('RefCon')) {
                    // Only if there is wpTextbox1 on the page
                    if (document.getElementById('wpTextbox1')) {
                        refcon.main();
                    }
                }
            }
        },

        /**
         * Main function. Calls specific subfunctions
         *
         * @return {void}
         */
        main: function () {
            // This is a container function that calls subfunctions and passes their return values to other subfunctions

            // First, get indexes of reference templates in article, if there are any
            var indexes = refcon.parseIndexes(), i;

            if (indexes.length > 0) {

                var templateDataList = [], templatesString = '';

                // Go through indexes array
                for (i = 0; i < indexes.length; i++) {
                    var refStartIndex = indexes[i];
                    var nextRefStartIndex = indexes[i + 1] ? indexes[i + 1] : refcon.textBoxText.length;

                    var templateData = refcon.getTemplateContent(refStartIndex, nextRefStartIndex, i);

                    // don't do anything with the reference template if it is not closed
                    if (templateData['refEndIndex'] !== null) {
                        templatesString += templateData['templateContent'];
                        templateDataList.push(templateData);
                    }
                }

                // Use mw.API to get reflist templates parameter pairs
                var paramPairsList = refcon.getTemplateParams(templatesString);

                for (i = 0; i < templateDataList.length; i++) {
                    var paramsPair = typeof paramPairsList[i] !== 'undefined' ? paramPairsList[i] : {};
                    var refTemplate = refcon.getTemplateObject(templateDataList[i], paramsPair);
                    refcon.parseTemplateRefs(refTemplate);
                }

                // Go through refTemplates array (refTemplates determine the boundaries) and create an array of TextPart objects
                // These are text parts of an article that are located between reference templates

                refcon.storeTextParts();

                // Process references in reference templates, remove duplicate keys and values

                for (i = 0; i < refcon.refTemplates.length; i++) {
                    refcon.refTemplates[i].processDuplicates();
                }

                // Find and store references and citations in each textPart object

                for (i = 0; i < refcon.textParts.length; i++) {
                    refcon.parseTextParts(refcon.textParts[i]);
                }

                // Compare references to the ones in reference template(s). Add text part references into reference template.
                // Create citations to references.

                for (i = 0; i < refcon.textParts.length; i++) {
                    refcon.processTextPartRefs(refcon.textParts[i]);
                }

                // Link textPart citations to references

                for (i = 0; i < refcon.textParts.length; i++) {
                    refcon.linkCitations(refcon.textParts[i]);
                }

                // Show form with references
                refcon.showForm();

            } else {
                refcon.showDifferenceView();
            }
        },

        /**
         * Continue processing after form. Commit changes and show the differences view
         *
         * @return {void}
         */
        commit: function () {

            // Recreate indexes (because names could have been changed in the form)
            for (i = 0; i < refcon.refTemplates.length; i++) {
                refcon.refTemplates[i].reIndex();
            }

            // Replace references inside text part strings with citations
            for (i = 0; i < refcon.textParts.length; i++) {
                refcon.replaceTextPartRefs(refcon.textParts[i]);
            }
            // Build reference templates
            for (i = 0; i < refcon.refTemplates.length; i++) {
                refcon.buildRefTemplates(refcon.refTemplates[i]);
            }
            var newText = refcon.writeTextBoxText();
            var textbox = refcon.getTextbox();
            var oldText = textbox.val();

            if (oldText != newText) {
                // Update textbox
                textbox.val(newText);
                // Add summary
                refcon.addSummary();
            }
            refcon.showDifferenceView();
        },

        /**
         * Show form with references
         *
         * @return {void}
         */
        showForm: function () {

            // Define basic elements
            var gui = $('<div>').attr('id', 'refcon'), container = $('<div>').attr('id', 'refcon-container'),
                header = $('<div>').attr('id', 'refcon-header'),
                title = $('<span>').attr('id', 'refcon-title').text(refcon.getOption('gadgetname')),
                closer = $('<div>').attr('id', 'refcon-close').addClass('refcon-abort').html('&times;').attr('title', refcon.getMessage('closetitle')),
                content = $('<div>').attr('id', 'refcon-content'), form = $('<form>').attr('id', 'refcon-form'),
                table = $('<table>').attr('id', 'refcon-table');

            // Put everything together and add it to DOM
            header.append(title, closer);
            content.append(form).append(table);
            container.append(header, content);
            gui.append(container);
            $('body').prepend(gui);

            // Make GUI draggable
            container.draggable({
                handle: header
            });

            // Set GUI width and height to 80% of user's window size (fallback is CSS-predefined values, if this fails)
            var width = $(window).width();
            var height = $(window).height();
            if ((Number.isInteger(width) && width > 0) && (Number.isInteger(height) && height > 0)) {
                content.css("width", Math.floor(width * 0.8));
                content.css("height", Math.floor(height * 0.8));
            }

            // Build table and fill it with reference data
            table.append('<tr>\
					<th></th>\
					<th class="refcon-sortable refcon-asc"><span>#</span></th>\
					<th class="refcon-sortable"><span>' + refcon.getMessage('name') + '</span></th>\
					<th class="refcon-sortable"><span>' + refcon.getMessage('reference') + '</span></th>\
					<th class="refcon-sortable"><span>' + refcon.getMessage('referenceuses') + '</span></th>\
					<th></th>\
					</tr>');

            var i;
            for (i = 0; i < refcon.refTemplates.length; i++) {
                var refTemplate = refcon.refTemplates[i];
                table.append('<tr id="templateheader' + i + '"><td class="refcon-templategroup" colspan="5" align="center">' + refcon.getMessage('refstemplateno') + ' ' + (i + 1) + (refcon.templateGroups[i].length > 0 ? ' (' + refcon.getMessage('referencegroup') + ': ' + refcon.templateGroups[i] + ')' : '') + '</td></tr>');
                var j, k = 0;
                for (j = 0; j < refTemplate.references.length; j++) {
                    var reference = refTemplate.references[j];
                    if (reference) {
                        k++;
                        var cssClass = k % 2 == 0 ? 'refcon-even' : 'refcon-odd';
                        table.append('<tr template="' + i + '">' + '<td class="' + cssClass + '"><img src="' + refcon.getOption('image-yes') + '"></td>' + '<td class="' + cssClass + '" align="center">' + k + '</td>' + '<td class="' + cssClass + '"><input class="refcon-refname" type="text" template_id="' + i + '" name="' + j + '" value="' + reference.name + '"></td>' + '<td class="' + cssClass + ' refcontent">' + reference.content + '</td>' + '<td class="' + cssClass + '" align="center">' + reference.citations.length + '</td>' + '<td class="' + cssClass + '"><input class="refcon-refplace" type="checkbox" name="' + j + '" value="' + reference.citations.length + '"' + (reference.inRefTemplate === true ? 'checked' : '') + '></td>' + '</tr>');
                    }
                }
            }
            table.append('<tr><td colspan="5"><table id="refcon-table-options">\
					<tr><td><span class="refcon-option-header">' + refcon.getMessage('optionsheaderreflocation') + '</span></td><td width="20"></td><td><span class="refcon-option-header">' + refcon.getMessage('optionsheaderother') + '</span></td></tr>\
					<tr><td><span class="refcon-option-point"><input class="refcon-refplacement" type="radio" name="reference-place" value="template"> ' + refcon.getMessage('optionlocation1') + '</span></td><td width="20"></td><td><span class="refcon-option-point"><input type="checkbox" id="refcon-savesorted" name="sort" value="yes">' + refcon.getMessage('checkboxsortorder') + '</span></td></tr>\
					<tr><td><span class="refcon-option-point"><input class="refcon-refplacement" type="radio" name="reference-place" value="text"> ' + refcon.getMessage('optionlocation2') + '</span></td><td width="20"></td><td><span class="refcon-option-point"><input type="checkbox" id="refcon-keepnames" name="names" value="yes">' + refcon.getMessage('checkboxkeepnames') + '</span></td></tr>\
					<tr><td><span class="refcon-option-point"><input class="refcon-refplacement" type="radio" name="reference-place" value="usage"> ' + refcon.getMessage('optionlocation3', ['<input id="refcon-table-options-uses" type="text" name="min_uses" size="2" value="2">']) + '</span></td><td width="20"></td><td><span class="refcon-option-point"><input type="checkbox" id="refcon-makecopies" name="copies" value="yes">' + refcon.getMessage('checkboxmakecopies') + '</span></td></tr>\
					</table></td></tr>');
            table.append('<tr id="refcon-buttons"><td colspan="5" align="center"><button type="button" id="refcon-abort-button" class="refcon-abort">' + refcon.getMessage('buttonabort') + '</button><button type="button" id="refcon-continue-button">' + refcon.getMessage('buttoncontinue') + '</button></td></tr>');

            container.css('display', 'block');

            // Bind events

            // Close window when user clicks on 'x'
            $('.refcon-abort').on('click', function () {
                gui.remove();
                refcon.cleanUp();
            });

            // Activate 'Continue' button when user changes some reference name
            $('#refcon-table .refcon-refname').on('input', function () {
                $('#refcon-continue-button').removeAttr('disabled');
            });

            // Validate reference names when user clicks 'Continue'. If there are errors, disable 'Continue' button
            $('#refcon-continue-button').on('click', function (event) {
                refcon.validateInput();
                if (table.find('[data-invalid]').length === 0) {
                    refcon.afterScreenSave();
                } else {
                    $('#refcon-continue-button').attr('disabled', true);
                }
            });

            // Sort table if user clicks on sortable table header
            $(".refcon-sortable").on('click', function () {
                refcon.sortTable($(this));
            });

            $("#refcon-table .refcon-refplacement").on('change', function () {
                switch ($(this).val()) {
                    case 'template':
                        $('#refcon-table .refcon-refplace').prop('checked', true);
                        break;
                    case 'text':
                        $('#refcon-table .refcon-refplace').prop('checked', false);
                        break;
                    case 'usage':
                        refcon.selectReferencesByUsage();
                        break;
                }
            });
            // When user clicks on uses input field, select the third radio checkbox
            $("#refcon-table-options-uses").on('focus', function () {
                $('#refcon-table-options input:radio[name=reference-place]:nth(2)').trigger("click");
            });

            $("#refcon-table-options-uses").on('input', function () {
                refcon.selectReferencesByUsage();
            });

        },

        sortTable: function (columnHeader) {
            var order = $(columnHeader).hasClass('refcon-asc') ? 'refcon-desc' : 'refcon-asc';
            $('.refcon-sortable').removeClass('refcon-asc').removeClass('refcon-desc');
            $(columnHeader).addClass(order);

            var colIndex = $(columnHeader).prevAll().length;
            var tbod = $(columnHeader).closest("table").find("tbody");

            var i;
            for (i = 0; i < refcon.templateGroups.length; i++) {
                var rows = $(tbod).children("tr[template='" + i + "']");
                rows.sort(function (a, b) {
                    var A = $(a).children("td").eq(colIndex).has("input").length ? $(a).children("td").eq(colIndex).children("input").val() : $(a).children("td").eq(colIndex).text();
                    var B = $(b).children("td").eq(colIndex).has("input").length ? $(b).children("td").eq(colIndex).children("input").val() : $(b).children("td").eq(colIndex).text();

                    if (colIndex === 1 || colIndex === 4) {
                        A = Number(A);
                        B = Number(B);
                        return order === 'refcon-asc' ? A - B : B - A;
                    } else {
                        if (order === 'refcon-asc') {
                            return A.localeCompare(B, mw.config.get('wgContentLanguage'));
                        } else {
                            return B.localeCompare(A, mw.config.get('wgContentLanguage'));
                        }
                    }
                });
                $(rows).each(function (index) {
                    $(this).children("td").removeClass('refcon-even').removeClass('refcon-odd');
                    $(this).children("td").addClass(index % 2 == 0 ? 'refcon-odd' : 'refcon-even');
                });

                $(columnHeader).closest("table").find("tbody").children("tr[template='" + i + "']").remove();
                $(columnHeader).closest("table").find("#templateheader" + i).after(rows);
            }

            // Activate 'Continue' button when user changes some reference name
            $('#refcon-table .refcon-refname').on('input', function () {
                $('#refcon-continue-button').removeAttr('disabled');
            });
        },

        selectReferencesByUsage: function () {
            var usage = $("#refcon-table-options-uses").val();
            if (usage.length > 0) {
                var regex = /[^0-9]+/;
                if (!usage.match(regex)) {
                    usage = Number(usage);
                    $('#refcon-table .refcon-refplace').each(function () {
                        if ($(this).attr('value') >= usage) $(this).prop('checked', true); else $(this).prop('checked', false);
                    });
                }
            }
        },

        validateInput: function () {
            var names = {}, duplicateNames = {}, i;

            for (i = 0; i < refcon.templateGroups.length; i++) {
                names[i] = {};
                duplicateNames[i] = {};
            }

            $('#refcon-table .refcon-refname').each(function () {
                if ($(this).val() in names[$(this).attr('template_id')]) {
                    duplicateNames[$(this).attr('template_id')][$(this).val()] = 1;
                } else {
                    names[$(this).attr('template_id')][$(this).val()] = 1;
                }
            });

            $('#refcon-table .refcon-refname').each(function () {
                if ($(this).val() in duplicateNames[$(this).attr('template_id')]) {
                    refcon.markFieldAsInvalid($(this));
                } else if ($(this).val() === '') {
                    refcon.markFieldAsInvalid($(this));
                } else if ($(this).val().match(/[<>"]/) !== null) {
                    refcon.markFieldAsInvalid($(this));
                } else {
                    refcon.markFieldAsValid($(this));
                }
            });
        },

        markFieldAsValid: function (inputField) {
            $(inputField).removeAttr('data-invalid');
            $(inputField).closest('tr').find('img').attr('src', refcon.getOption('image-yes'));
        },

        markFieldAsInvalid: function (inputField) {
            $(inputField).attr('data-invalid', 1);
            $(inputField).closest('tr').find('img').attr('src', refcon.getOption('image-no'));
        },

        /**
         * Process form after the Save button was pressed
         *
         * @return {void}
         */

        afterScreenSave: function () {
            $('#refcon-table tr[template]').each(function () {
                var refName = $(this).find('.refcon-refname');
                var name = refName.val();
                var templateId = refName.attr('template_id');
                var refId = refName.attr('name');
                // change reference names to the ones from the form, in case some name was changed
                refcon.refTemplates[templateId].references[refId].changeName(name);
                // save reference location preference from the form into reference object
                var refPlace = $(this).find('.refcon-refplace');
                refcon.refTemplates[templateId].references[refId].inRefTemplate = refPlace.prop('checked') ? true : false;
            });

            // If user has checked "save sorted" checkbox
            if ($('#refcon-savesorted').prop('checked')) {
                var sortOptions = {};
                if ($('.refcon-asc').prevAll().length) {
                    sortOptions['column'] = $('.refcon-asc').prevAll().length;
                    sortOptions['order'] = 'asc';
                } else if ($('.refcon-desc').prevAll().length) {
                    sortOptions['column'] = $('.refcon-desc').prevAll().length;
                    sortOptions['order'] = 'desc';
                }
                refcon.userOptions['sort'] = sortOptions;
            }
            // If user has checked "keep names" checkbox
            if ($('#refcon-keepnames').prop('checked')) refcon.userOptions['keepnames'] = true; else refcon.userOptions['keepnames'] = false;

            // If user has checked "separate copies" checkbox
            if ($('#refcon-makecopies').prop('checked')) refcon.userOptions['makecopies'] = true; else refcon.userOptions['makecopies'] = false;

            refcon.commit();
        },

        /**
         * Parse article text and find all reference templates indexes
         *
         * @return {array} Start indexes of all reference templates
         */

        parseIndexes: function () {

            var refTemplateNames = refcon.getOption('reftemplatenames');

            var wikitext = refcon.getTextbox().val(), i, name, re, refTemplateIndexes = [];

            // Make all appearances of the reference templates in article text uniform
            if (Array.isArray(refTemplateNames)) {
                var refTemplateName = refTemplateNames[0];

                for (i = 0; i < refTemplateNames.length; i++) {
                    name = refTemplateNames[i];
                    re = new RegExp('{{\s*' + name, 'gi');
                    wikitext = wikitext.replace(re, '{{' + refTemplateName);
                }

                // Find all indexes of the reference template in the article and put them into array
                // Index is the place in article text where references template starts
                var pos = wikitext.indexOf('{{' + refTemplateName);

                if (pos !== -1) refTemplateIndexes.push(pos);

                while (pos !== -1) {
                    pos = wikitext.indexOf('{{' + refTemplateName, pos + 1);
                    if (pos !== -1) refTemplateIndexes.push(pos);
                }
            } else {
                // call some error handling function and halt
            }

            // Set the refcon variable with modified wikitext
            refcon.textBoxText = wikitext;

            return (refTemplateIndexes);

        },

        /**
         * Get reference template's content and end index
         *
         * @param {integer} reference template's index in article text
         * @param {integer} next reference template's index in article text
         *
         * @return {object} reference template's content string, start and end indexes
         */

        getTemplateContent: function (templateIndex, nextTemplateIndex) {

            var textPart = refcon.textBoxText.substring(templateIndex, nextTemplateIndex);
            var i, depth = 1, prevChar = '', templateEndIndex = 0, templateAbsEndIndex = null, templateContent = '';

            // Go through the textPart and find the template's end code '}}'
            // @todo: could use ProveIt's alternative code here
            for (i = 2; i < nextTemplateIndex; i++) {
                if (textPart.charAt(i) === "{" && prevChar === "{") ++depth;
                if (textPart.charAt(i) === "}" && prevChar === "}") --depth;
                if (depth === 0) {
                    templateEndIndex = i + 1;
                    break;
                }
                prevChar = textPart.charAt(i);
            }

            // If templateEndIndex is 0, reference template's ending '}}' is missing in the textPart

            if (templateEndIndex > 0) {
                templateContent = textPart.substring(0, templateEndIndex);
                templateAbsEndIndex = templateIndex + templateEndIndex;
            }

            return ({
                'templateContent': templateContent, 'refStartIndex': templateIndex, 'refEndIndex': templateAbsEndIndex
            });

        },

        /**
         * Get all reference templates' name and value pairs using a single mw.Api call
         *
         * @param {string} String that contains all article's reflist templates
         *
         * @return {array} List of reference template objects with parameter names and values
         */

        getTemplateParams: function (templatesString) {

            var paramPairsList = [];
            var refTemplateNames = refcon.getOption('reftemplatenames');

            if (Array.isArray(refTemplateNames)) {
                var mainRefTemplateName = refTemplateNames[0];
            } else {
                // call some error handling function and halt
            }

            // We will do a single API call to get all reflist templates parameter pairs
            new mw.Api().post({
                'action': 'expandtemplates', 'text': templatesString, 'prop': 'parsetree'
            }, {async: false}).done(function (data) {
                var parsetree = data.expandtemplates.parsetree;
                var result = xmlToJSON.parseString(parsetree);
                var i, templateRoot = result.root[0].template;

                //@todo: could rewrite the code to use JSON.parse
                for (i = 0; i < templateRoot.length; i++) {
                    if (templateRoot[i].title[0]['_text'] === mainRefTemplateName) {
                        var paramPairs = {};
                        var part = templateRoot[i].part;
                        if (typeof part !== 'undefined') {
                            var j, name, value, ext;
                            for (j = 0; j < part.length; j++) {
                                if (typeof part[j].equals !== 'undefined') {
                                    name = part[j].name[0]['_text'];
                                } else {
                                    name = part[j].name[0]['_attr']['index']['_value'];
                                }
                                name = typeof name === 'string' ? name.trim() : name;
                                // By checking 'ext' first, '_text' second,
                                // if the parameter value is a list of references that contains some text between the reference tags, the text is lost.
                                // But at least we get the references and not the text instead
                                if (typeof part[j].value[0]['ext'] !== 'undefined') {
                                    ext = part[j].value[0]['ext'];
                                    if (Array.isArray(ext)) {
                                        var k, attr, inner;
                                        value = [];
                                        for (k = 0; k < ext.length; k++) {
                                            if (typeof ext[k]['name'][0]['_text'] !== 'undefined' && ext[k]['name'][0]['_text'].toLowerCase() === 'ref' && typeof ext[k]['close'][0]['_text'] !== 'undefined' && ext[k]['close'][0]['_text'].toLowerCase() === '</ref>') {
                                                if (typeof ext[k]['attr'][0]['_text'] !== 'undefined' && typeof ext[k]['inner'][0]['_text'] !== 'undefined') {
                                                    value.push({
                                                        'attr': ext[k]['attr'][0]['_text'],
                                                        'inner': ext[k]['inner'][0]['_text']
                                                    });
                                                }
                                            }
                                        }
                                    }
                                } else if (typeof part[j].value[0]['_text'] !== 'undefined') {
                                    value = part[j].value[0]['_text'];
                                }
                                value = typeof value === 'string' ? value.trim() : value;
                                paramPairs[name] = value;
                            }
                            paramPairsList.push(paramPairs);
                        }
                    }
                }
            });
            return (paramPairsList);
        },

        /**
         * Get reference template object from paramPairs and templateData objects
         *
         * @param {object} reference template data object with indexes and template content
         * @param {object} reference template parameter pairs object with param names and values
         *
         * @return {object} reference template object
         */

        getTemplateObject: function (templateData, paramPairs) {

            var name, i, groupName;
            var refGroupNames = refcon.getOption('reftemplategroupnames');

            // Go through paramPairs and see if there is a configuration defined group name in parameter names. Get it's value
            if (Array.isArray(refGroupNames)) {
                if (typeof paramPairs === 'object') {
                    for (i = 0; i < refGroupNames.length; i++) {
                        var name = refGroupNames[i];
                        if (typeof paramPairs[name] !== 'undefined') {
                            groupName = paramPairs[name];
                            break;
                        }
                    }
                }
            } else {
                // call some error handling function and halt
            }

            if (typeof groupName === 'undefined') {
                groupName = '';
            }

            refcon.templateGroups.push(groupName);

            // Build basic reference template
            var refTemplate = new refcon.RefTemplate({
                'group': groupName,
                'string': templateData['templateContent'],
                'start': templateData['refStartIndex'],
                'end': templateData['refEndIndex'],
                'params': paramPairs
            });

            return (refTemplate);
        },

        /**
         * Parse references in reference template's refs field (using mw.Api)
         *
         * @param {object} refTemplate object
         *
         * @return {void}
         */

        parseTemplateRefs: function (refTemplate) {

            var refsNames = refcon.getOption('reftemplaterefsnames');
            var refsArray, refsName, i;

            if (Array.isArray(refsNames)) {
                if (typeof refTemplate.params === 'object') {
                    for (i = 0; i < refsNames.length; i++) {
                        refsName = refsNames[i];
                        if (typeof refTemplate.params[refsName] !== 'undefined') {
                            refsArray = refTemplate.params[refsName];
                            break;
                        }
                    }
                }
            } else {
                // call some error handling function and halt
            }

            // Look for references inside the reference template's refs parameter

            if (typeof refsArray !== 'undefined' && refsArray.length > 0) {
                for (i = 0; i < refsArray.length; i++) {

                    // Turn all matches into reference objects
                    reference = refcon.parseReference(['', refsArray[i].attr, refsArray[i].inner], 'reference');

                    // Only add references that have name
                    if (reference['name'].length > 0) {
                        refTemplate.addRef(reference);
                    }
                }
            }
            refcon.refTemplates.push(refTemplate);
        },

        /**
         * Make a reference object out of a reference string
         *
         * @param {array} match array produced by regexp
         * @param {string} type. can be either "reference" or "citation"
         *
         * @return {object} returns either reference object or citation object based on type
         */

        parseReference: function (data, type) {
            var params = {}, referenceName, referenceGroup, referenceString = data[0], refParamString = data[1],
                referenceContent = data[2], referenceIndex = data.index;

            if (typeof refParamString !== 'undefined') {
                refParamString = refParamString.trim();

                if (refParamString.length > 0) {
                    //Examples of strings to extract name and group from
                    //group="arvuti" name="refname1"
                    //name="refname2" group="arvuti str"
                    //group="arvuti"
                    //name="refname1 blah"

                    var re = /(?:(name|group)\s*=\s*(?:"([^"]+)"|'([^']+)'|([^ ]+)))(?:\s+(name|group)\s*=\s*(?:"([^"]+)"|'([^']+)'|([^ ]+)))?/i;

                    var match = refParamString.match(re);

                    try {
                        if (typeof match[1] !== 'undefined' && (typeof match[2] !== 'undefined' || typeof match[3] !== 'undefined' || typeof match[4] !== 'undefined')) {
                            if (typeof match[2] !== 'undefined') {
                                params[match[1]] = match[2];
                            } else if (typeof match[3] !== 'undefined') {
                                params[match[1]] = match[3];
                            } else {
                                params[match[1]] = match[4];
                            }
                        }

                        if (typeof match[5] !== 'undefined' && (typeof match[6] !== 'undefined' || typeof match[7] !== 'undefined' || typeof match[8] !== 'undefined')) {
                            if (typeof match[6] !== 'undefined') {
                                params[match[5]] = match[6];
                            } else if (typeof match[7] !== 'undefined') {
                                params[match[5]] = match[7];
                            } else {
                                params[match[5]] = match[8];
                            }
                        }
                    } catch (e) {
                        refcon.throwReferenceError(referenceString, refcon.getMessage('parsereferror', [referenceString]), e);
                    }

                    referenceName = params['name'] ? params['name'] : '';
                    referenceGroup = params['group'] ? params['group'] : '';
                }
            }

            if (typeof referenceGroup === 'undefined') referenceGroup = '';

            if (typeof referenceName === 'undefined') referenceName = '';

            var found = referenceName.match(/[<>"]/);
            if (found !== null) {
                refcon.throwReferenceError(referenceString, refcon.getMessage('parserefforbidden', [found[0], referenceString]));
            }

            // Clean reference name and content of newlines, double spaces, leading or trailing whitespace and more

            referenceName = refcon.cleanString(referenceName, 'name');

            if (typeof referenceContent !== 'undefined') referenceContent = refcon.cleanString(referenceContent, 'content');

            if (type === 'reference') {
                // Build the basic reference
                var reference = new refcon.Reference({
                    'group': referenceGroup,
                    'name': referenceName,
                    'content': referenceContent,
                    'index': referenceIndex,
                    'string': referenceString
                });
            } else if (type === 'citation') {
                // Build the basic citation
                var reference = new refcon.Citation({
                    'group': referenceGroup, 'name': referenceName, 'index': referenceIndex, 'string': referenceString
                });
            }
            return reference;
        },

        throwReferenceError: function (referenceString, message, error) {
            var found = refcon.getTextbox().val().match(refcon.escapeRegExp(referenceString));
            refcon.highlight(found.index, referenceString);
            window.alert(message);
            refcon.cleanUp();
            throw new Error(error);
        },

        /**
         * Clean reference name and content of newlines, double spaces, leading or trailing whitespace, etc
         *
         * @param {string} reference name or reference content string
         * @param (string) whether the string is name or content
         *
         * @return {string} cleaned reference name and content
         */

        cleanString: function (str, type) {

            // get rid of newlines and trailing/leading space
            str = str.replace(/(\r\n|\n|\r)/gm, ' ').trim();

            // get rid of double whitespace inside string
            str = str.replace(/\s\s+/g, ' ');

            // if the str is content, get rid of extra space before template closing / after template opening
            if (type === 'content') {
                str = str.replace(/ }}/g, '}}');
                str = str.replace(/{{ /g, '{{');
            }

            return (str);
        },

        escapeRegExp: function (str) {
            return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
        },

        /**
         * Highlight string in the textbox and scroll it to view
         *
         * @return {void}
         */
        highlight: function (index, string) {
            var textbox = refcon.getTextbox()[0], text = textbox.value;

            // Scroll to the string
            textbox.value = text.substring(0, index);
            textbox.focus();
            textbox.scrollTop = 99999999; // Larger than any real textarea (hopefully)
            var currentScrollTop = textbox.scrollTop;
            textbox.value += text.substring(index);
            if (currentScrollTop > 0) {
                textbox.scrollTop = currentScrollTop + 300;
            }

            // Highlight the string
            var start = index, end = start + string.length;
            $(textbox).focus().textSelection('setSelection', {'start': start, 'end': end});
        },

        /**
         * Turn all article text parts – parts that are between reference templates – into objects and save into array
         *
         * @return {void}
         */

        storeTextParts: function () {
            var i, text, refEnd, from, to, textPart;

            for (i = 0; i < refcon.refTemplates.length; i++) {

                from = refEnd ? refEnd : 0;

                to = refcon.refTemplates[i]['start'];
                refEnd = refcon.refTemplates[i]['end'];

                if (to === 0) {
                    continue;
                }

                text = refcon.textBoxText.substring(from, to);

                // Textpart's references can only be in templates that come after the textpart in article text
                var j, groupName, groupNames = {};

                for (j = i; j < refcon.refTemplates.length; j++) {
                    groupName = refcon.templateGroups[j];
                    // Only add the first instance of template group
                    if (typeof groupNames[groupName] === 'undefined') {
                        groupNames[groupName] = j;
                    }
                }

                // @todo: check what happens if a reference template follows another reference template without any space.
                // Does textpart still get correct inTemplate sequence?

                // Create new TextPart object and store it

                textPart = new refcon.TextPart({
                    'start': from, 'end': to, 'string': text, 'inTemplates': groupNames
                });

                refcon.textParts.push(textPart);
            }

            // Add the last text part after the last reference template
            if (typeof refEnd === 'number' && refEnd > 0) {
                if (refcon.textBoxText.length > refEnd) {

                    text = refcon.textBoxText.substring(refEnd, refcon.textBoxText.length);

                    textPart = new refcon.TextPart({
                        'start': refEnd, 'end': refcon.textBoxText.length, 'string': text
                    });

                    refcon.textParts.push(textPart);
                }
            }
        },

        /**
         * Find all references and citations in a TextPart object and store them in the object.
         *
         * @param {object} TextPart object
         */

        parseTextParts: function (textPart) {

            if (typeof textPart.string !== 'undefined' && textPart.string.length > 0) {

                // Look for all citations
                // Citations come in two forms:
                // 1. <ref name="CV Kontrollikoda"/>
                // 2. <ref name="pm"></ref>
                // Ref label can have optional group parameter:
                // <ref group="blah" name="CV Kontrollikoda"/> or <ref name="CV Kontrollikoda" group="blah"/>
                // Group and name parameter values can be between '' or "", or bare (if value has no whitespaces)

                var citations = [], citationsRegExp = /<ref(\s+[^/>]+)(?:\/\s*>|><\/ref>)/ig, match, citation;

                while ((match = citationsRegExp.exec(textPart.string))) {

                    // Turn all the matches into citation objects
                    citation = refcon.parseReference(match, 'citation');

                    if (typeof citation === 'object' && typeof citation.name !== 'undefined') {
                        citations.push(citation);
                    }
                }

                textPart.citations = citations;

                // Look for all references

                var references = [], referencesRegExp = /<ref(\s+[^\/]+?)?>([\s\S]*?)<\/ref>/ig, match, reference;

                while ((match = referencesRegExp.exec(textPart.string))) {
                    // Avoid further processing of citations like <ref name="pm"></ref>
                    if (match[2] === '') {
                        continue;
                    }

                    // Turn all the matches into reference objects
                    reference = refcon.parseReference(match, 'reference');

                    references.push(reference);
                }

                textPart.references = references;
            }
        },

        /**
         * Compare references in a TextPart object to the references in reference template (if there are any). Add references into
         * reference template. Update indexes. For each reference create citation object and link it with reflist template reference.
         *
         * @param {object} TextPart object
         */
        processTextPartRefs: function (textPart) {
            var i, reference, refTemplate, templateRef, createdCitations = [];

            for (i = 0; i < textPart.references.length; i++) {
                reference = textPart.references[i];

                refTemplate = refcon.refTemplates[textPart.inTemplates[reference.group]];

                // First add named references, because otherwise we could create new records (and names)
                // for already existing text part defined references
                if (reference.content.length > 0 && reference.name.length > 0) {

                    // First check if this a complete duplicate reference (name and value are the same)
                    templateRef = refcon.getRefByIndex(refTemplate, 'keyValues', reference.name + '_' + reference.content);

                    if (typeof templateRef === 'object') {
                        if (templateRef.name === reference.name && templateRef.content === reference.content) {
                            // found exact duplicate
                            var citation = new refcon.Citation({
                                'group': reference.group,
                                'name': reference.name,
                                'index': reference.index,
                                'string': reference.string
                            });
                            templateRef.citations.push(citation);
                            createdCitations.push(citation);
                            continue;
                        }
                    }
                    // Check if the reference has the same name but different content than template reference
                    templateRef = refcon.getRefByIndex(refTemplate, 'keys', reference.name);

                    if (typeof templateRef === 'object') {
                        if (templateRef.name === reference.name && templateRef.content !== reference.content) {
                            // found reference with the same name but different content

                            // add reference content to template references under new name
                            var newName = refTemplate.getNewName(reference.name);
                            var newRef = new refcon.Reference({
                                'group': reference.group,
                                'name': newName,
                                'content': reference.content,
                                'inRefTemplate': false
                            });
                            var citation = new refcon.Citation({
                                'group': reference.group,
                                'name': newName,
                                'index': reference.index,
                                'string': reference.string
                            });
                            newRef.citations.push(citation);
                            refTemplate.addRef(newRef);
                            createdCitations.push(citation);
                            // add names into replacements object, so we can replace all citation names that use the old name
                            refTemplate.replacements[reference.name] = newName;
                            continue;
                        }
                    }
                    // Check if the reference has the same content but different name than template reference
                    templateRef = refcon.getRefByIndex(refTemplate, 'values', reference.content);

                    if (typeof templateRef === 'object') {
                        if (templateRef.content === reference.content && templateRef.name !== reference.name) {
                            // Found reference with the same content but different name.
                            // Drop reference name, use reflist template reference name as citation name
                            var citation = new refcon.Citation({
                                'group': reference.group,
                                'name': templateRef.name,
                                'index': reference.index,
                                'string': reference.string
                            });
                            templateRef.citations.push(citation);
                            createdCitations.push(citation);
                            // add names into replacements object, so we can replace all citation names that use the old name
                            refTemplate.replacements[reference.name] = templateRef.name;
                            continue;
                        }
                    }
                    // If we get here, it means we've got a named reference that has not yet been described in reflist template.
                    // Add the reference to reflist references
                    var newRef = new refcon.Reference({
                        'group': reference.group,
                        'name': reference.name,
                        'content': reference.content,
                        'inRefTemplate': false
                    });
                    var citation = new refcon.Citation({
                        'group': reference.group,
                        'name': reference.name,
                        'index': reference.index,
                        'string': reference.string
                    });
                    newRef.citations.push(citation);
                    refTemplate.addRef(newRef);
                    createdCitations.push(citation);
                }
            }
            // Now we go through unnamed references
            for (i = 0; i < textPart.references.length; i++) {
                reference = textPart.references[i];

                refTemplate = refcon.refTemplates[textPart.inTemplates[reference.group]];

                if (reference.content.length > 0 && reference.name.length === 0) {
                    templateRef = refcon.getRefByIndex(refTemplate, 'values', reference.content);
                    if (typeof templateRef === 'object') {
                        if (templateRef.content === reference.content) {
                            // found reference with the same content
                            var citation = new refcon.Citation({
                                'group': reference.group,
                                'name': templateRef.name,
                                'index': reference.index,
                                'string': reference.string
                            });
                            templateRef.citations.push(citation);
                            createdCitations.push(citation);
                            continue;
                        }
                    }
                    // If we get here, we have a completely new unnamed reference
                    // add the reference to template references
                    var newName = refTemplate.getNewName();
                    var newRef = new refcon.Reference({
                        'group': reference.group, 'name': newName, 'content': reference.content, 'inRefTemplate': false
                    });
                    var citation = new refcon.Citation({
                        'group': reference.group, 'name': newName, 'index': reference.index, 'string': reference.string
                    });
                    newRef.citations.push(citation);
                    refTemplate.addRef(newRef);
                    createdCitations.push(citation);
                }
            }
            textPart.linkedCitations = createdCitations;
        },

        /**
         * Link citations to their reflist template references
         *
         * @param {object} TextPart object
         *
         * @return {void}
         */
        linkCitations: function (textPart) {

            var citation, refTemplate, replaceName, templateRef, i;

            for (i = 0; i < textPart.citations.length; i++) {
                citation = textPart.citations[i];

                refTemplate = refcon.refTemplates[textPart.inTemplates[citation.group]];

                if (citation.name.length > 0) {

                    // If there is replacement name in replacements object, replace the citation name
                    replaceName = refTemplate.replacements[citation.name];

                    if (typeof replaceName !== 'undefined') {
                        citation.name = replaceName;
                    }

                    // For each citation try to find its reference
                    templateRef = refcon.getRefByIndex(refTemplate, 'keys', citation.name);
                    if (typeof templateRef === 'object') {
                        if (templateRef.name === citation.name) {
                            templateRef.citations.push(citation);
                            textPart.linkedCitations.push(citation);
                        }
                    }
                }
            }
        },

        /**
         * Replace all references in TextPart object string with citations. Also replace citation names that were changed in previous steps
         *
         * @param {object} TextPart object
         *
         * @return {void}
         */
        replaceTextPartRefs: function (textPart) {
            var i, citation, refTemplate, templateRef;
            for (i = 0; i < textPart.linkedCitations.length; i++) {
                citation = textPart.linkedCitations[i];
                if (citation.name.length > 0) {
                    refTemplate = refcon.refTemplates[textPart.inTemplates[citation.group]];
                    templateRef = refcon.getRefByIndex(refTemplate, 'keys', citation.name);

                    // For the references that are marked as "in reference list template" replace all instances with citation
                    if (templateRef.inRefTemplate === true) {
                        textPart.string = textPart.string.replace(citation.string, citation.toString());
                        // For the references that are marked as "in the body of article"...
                    } else {
                        // if the reference has just one use, output the reference string w/o name (unless user options "keep names" was selected)
                        if (templateRef.citations.length == 1) {
                            textPart.string = textPart.string.replace(citation.string, templateRef.toStringText(refcon.userOptions.keepnames));
                            // if the reference has more uses...
                        } else {
                            // if user has requested every article body reference to be separate copy...
                            if (refcon.userOptions.makecopies === true) {
                                textPart.string = textPart.string.replace(citation.string, templateRef.toStringText(refcon.userOptions.keepnames));
                                // if copies option was not requested...
                            } else {
                                // if the reference has not been output yet, output named reference
                                if (templateRef.wasPrinted === false) {
                                    textPart.string = textPart.string.replace(citation.string, templateRef.toStringText(true));
                                    // mark reference as printed
                                    templateRef.wasPrinted = true;
                                    // if the reference has already been printed, output citation
                                } else {
                                    textPart.string = textPart.string.replace(citation.string, citation.toString());
                                }
                            }
                        }
                    }
                }
            }
        },

        /**
         * Build reference templates
         *
         * @param {object} RefTemplate object
         *
         * @return {void}
         */
        buildRefTemplates: function (refTemplate) {
            var i, reference, referencesString = '', refsAdded = false;

            // sort references if user has checked the checkbox
            if (typeof refcon.userOptions.sort === 'object' && Object.keys(refcon.userOptions.sort).length > 0) {
                refcon.sortReferences(refTemplate);
            }

            // turn reference data into reflist parameter value string
            for (i = 0; i < refTemplate.references.length; i++) {
                reference = refTemplate.references[i];
                if (typeof reference === 'object' && reference.inRefTemplate === true) {
                    referencesString += reference.toString() + "\n";
                }
            }
            // Cut the last newline
            referencesString = referencesString.substr(0, referencesString.length - 1);

            var refTemplateNames = refcon.getOption('reftemplatenames');

            if (Array.isArray(refTemplateNames)) {
                var refTemplateName = refTemplateNames[0];
            } else {
                // call some error handling function and halt
            }

            var refsNames = refcon.getOption('reftemplaterefsnames');

            if (Array.isArray(refsNames)) {
                var refsName = refsNames[0];
            } else {
                // call some error handling function and halt
            }

            var templateString = '{{' + refTemplateName;

            // Build references template string
            if (Object.keys(refTemplate.params).length > 0) {
                // Go through params object
                for (var name in refTemplate.params) {
                    var value = refTemplate.params[name];
                    // If param name matches with config name for reference list template refs param...
                    if (refsNames.indexOf(name) > -1) {
                        // ... only if there are references in reflist template
                        if (referencesString.length > 0) {
                            // ... add refstring to reflist params
                            templateString += '|' + refsName + '=' + "\n" + referencesString;
                            refsAdded = true;
                        }
                        continue;
                    } else if (typeof value !== 'string' && typeof value !== 'number') {
                        // If value is anything other than string or number, skip it.
                        // Value is array if, for example, references are incorrectly defined inside unnamed parameter.
                        continue;
                    }
                    templateString += '|' + name + '=' + value;
                }
            }
            // if the reflist template was without any parameters, add parameter and references here
            if (refsAdded === false && referencesString.length > 0) {
                templateString += '|' + refsName + "=\n" + referencesString;
            }
            if (referencesString.length > 0) templateString += "\n}}"; else templateString += "}}";

            refTemplate.string = templateString;
        },

        /**
         * Sort references inside reflist template according to user preferences
         *
         * @param {object} Reftemplate object
         *
         * @return {void}
         */
        sortReferences: function (refTemplate) {

            if (refcon.userOptions.sort.column === 1) {
                refTemplate.references = refcon.userOptions.sort.order === 'desc' ? refTemplate.references.reverse() : refTemplate.references;
            } else {
                refTemplate.references.sort(function (a, b) {
                    // order by reference name
                    if (refcon.userOptions.sort.column === 2) {
                        return refcon.userOptions.sort.order === 'asc' ? a.name.localeCompare(b.name, mw.config.get('wgContentLanguage')) : b.name.localeCompare(a.name, mw.config.get('wgContentLanguage'));
                        // order by reference content
                    } else if (refcon.userOptions.sort.column === 3) {
                        return refcon.userOptions.sort.order === 'asc' ? a.content.localeCompare(b.content, mw.config.get('wgContentLanguage')) : b.content.localeCompare(a.content, mw.config.get('wgContentLanguage'));
                        // order by citations count
                    } else if (refcon.userOptions.sort.column === 4) {
                        return refcon.userOptions.sort.order === 'asc' ? a.citations.length - b.citations.length : b.citations.length - a.citations.length;
                    }
                });
            }
        },

        /**
         * Verify if configuration option should be used. Return true or false
         * @param {string} Refcon option as returned by refcon.getOption method

         * @param {string} User configuration variable content
         *
         * @return {boolean} True of false
         */
        useConfigOption: function (configOptionValue, userConfigOptionName) {
            var result = false;
            switch (configOptionValue) {
                case 'yes':
                    result = true;
                    break;
                case 'no':
                    result = false;
                    break;
                case 'user':
                    if (typeof refConsolidateConfig === 'object' && typeof refConsolidateConfig[userConfigOptionName] !== 'undefined' && refConsolidateConfig[userConfigOptionName] === true) {
                        result = true;
                    }
                    break;
                default:
                    result = false;
            }
            return (result);
        },

        /**
         * Write text parts and reference templates into textbox variable
         *
         * @return {string} String that contains article text
         */

        writeTextBoxText: function () {

            var textBoxString = '';

            for (i = 0; i < refcon.textParts.length; i++) {
                textPart = refcon.textParts[i];

                textBoxString += textPart.string;

                if (typeof refcon.refTemplates[i] === 'object') {
                    textBoxString += refcon.refTemplates[i].string;
                }
            }

            return (textBoxString);
        },

        /**
         * Index into reference template template objects and return template object
         *
         * @param {object} reference template object
         * @param {string} index name
         * @param {integer} key to index into
         *
         * @return {object} reference template object
         */

        getRefByIndex: function (refTemplate, dictname, key) {
            var templateRef;
            var refDict = refTemplate[dictname];

            if (key in refDict && Array.isArray(refDict[key])) {
                var refKey = refDict[key][0];
                var templateRef = refTemplate.getRef(refKey);
            }

            return (templateRef);
        },

        /**
         * Add the RefCon edit summary
         *
         * @return {void}
         */
        addSummary: function () {
            var currentSummary = $('#wpSummary').val();
            var refconSummary = refcon.getOption('summary');
            var summarySeparator = refcon.getOption('summaryseparator');

            if (!refconSummary) {
                return; // No summary defined
            }
            if (currentSummary.indexOf(refconSummary) > -1) {
                return; // Don't add it twice
            }
            $('#wpSummary').val(currentSummary ? currentSummary + summarySeparator + refconSummary : refconSummary);
        },

        /**
         * Set minor edit checkbox and click View Differences button
         *
         * @return {void}
         */
        showDifferenceView: function () {
            document.forms.editform.wpMinoredit.checked = true;
            document.forms.editform.wpDiff.click();
        },

        /**
         * Produces random string with a given length
         *
         * @param {integer} string length
         * @param {string} charset (optional)
         *
         * @return {string} random string
         */

        randomString: function (len, charSet) {
            charSet = charSet || 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
            var randomString = '';
            for (var i = 0; i < len; i++) {
                var randomPoz = Math.floor(Math.random() * charSet.length);
                randomString += charSet.substring(randomPoz, randomPoz + 1);
            }
            return randomString;
        },

        /**
         * Empty refcon arrays before script exit
         *
         * @return {void}
         */
        cleanUp: function () {
            refcon.refTemplates = [];
            refcon.templateGroups = [];
            refcon.textParts = [];
            refcon.textBoxText = [];
        },

        /**
         * TextPart class
         *
         * @param {object} data for constructing the object
         */
        TextPart: function (data) {

            /**
             * Article text start index
             */
            this.start = typeof data.start === 'number' ? data.start : null;

            /**
             * Article text end index
             */
            this.end = typeof data.end === 'number' ? data.end : null;

            /**
             * Article text content string
             */
            this.string = data.string ? data.string : '';

            /**
             * Array that has indexes of reference templates that apply to this text part
             */
            this.inTemplates = data.inTemplates ? data.inTemplates : {};

            /**
             * Temporary holding array for reference objects
             */
            this.references = [];

            /**
             * Temporary holding array for citation objects
             */
            this.citations = [];

            /**
             * Array that hold citation objects that are linked to reflist template references
             */
            this.linkedCitations = [];
        },


        /**
         * Citation class
         *
         * @param {object} data for constructing the object
         */

        Citation: function (data) {

            /**
             * Citation group
             */
            this.group = data.group ? data.group : '';

            /**
             * Citation name
             */
            this.name = data.name ? data.name : '';

            /**
             * Citation location in the edit textbox
             */
            this.index = data.index ? data.index : 0;

            /**
             * Citation wikitext
             *
             * Example: <ref name="abc" />
             */
            this.string = data.string ? data.string : '';

            /**
             * Convert this citation to wikitext
             */
            this.toString = function () {
                var useTemplateR = false;
                // check if we should use template {{R}} for shorter citation format
                useTemplateR = refcon.useConfigOption(refcon.getOption('usetemplateR'), 'usetemplateR');

                var startString = useTemplateR ? '{{r' : '<ref';
                var groupString = useTemplateR ? '|g=' + this.group : ' group="' + this.group + '"';
                var nameString = useTemplateR ? '|' + this.name : ' name="' + this.name + '"';
                var endString = useTemplateR ? '}}' : ' />';

                return (startString + (this.group ? groupString : '') + (this.name ? nameString : '') + endString);
            };
        },

        /**
         * Reference class
         *
         * @param {object} Data for constructing the object
         */
        Reference: function (data) {

            /**
             * Extend the Citation class
             */
            refcon.Citation.call(this, data);

            /**
             * Reference content (without the <ref> tags)
             *
             * Example: Second chapter of {{Cite book |first=Charles |last=Darwin |title=On the Origin of Species}}
             */
            this.content = data.content ? data.content : '';

            /**
             * Array that contains citations to this reference
             */
            this.citations = [];

            /**
             * Boolean for reference location. True (the default) means in reference list template. False means in article text
             */
            this.inRefTemplate = typeof data.inRefTemplate !== 'undefined' ? data.inRefTemplate : true;

            /**
             * Boolean for reference output. False (the default) means the reference has not been printed yet. True means it has been printed.
             */
            this.wasPrinted = false;

            /**
             * Convert this reference to wikitext (inside reference list template)
             */
            this.toString = function () {
                var string = '<ref name="' + this.name + '">' + this.content + '</ref>';
                return string;
            };

            /**
             * Convert this reference to wikitext (in article text)
             */
            this.toStringText = function (named) {
                var string = '<ref';
                if (this.group) string += ' group="' + this.group + '"';
                if (named) string += ' name="' + this.name + '"';
                string += '>' + this.content + '</ref>';

                return string;
            };

            /**
             * Change reference's name and it's citations' names
             */
            this.changeName = function (newName) {
                this.name = newName;
                var i;
                for (i = 0; i < this.citations.length; i++) {
                    this.citations[i].name = newName;
                }
            };
        },

        /**
         * Reftemplate class
         *
         * @param {object} Data for constructing the object
         */
        RefTemplate: function (data) {

            /**
             * Template group
             */
            this.group = data.group ? data.group : '';

            /**
             * Template wikitext
             *
             */
            this.string = data.string ? data.string : '';

            /**
             * Template start position in the edit textbox
             */
            this.start = data.start ? data.start : 0;

            /**
             * Template end position in the edit textbox
             */
            this.end = data.end ? data.end : 0;

            /**
             * Template parameters object that holds name-value pairs
             */
            this.params = data.params ? data.params : {};

            /**
             * Array of reference objects of this template
             */
            this.references = [];

            /**
             * Reference index dicts
             */

            this.keys = {};
            this.values = {};
            this.keyValues = {};

            /**
             * Helper dicts to keep track of duplicate reference keys, values key/values
             */

            this.dupKeys = {};
            this.dupValues = {};
            this.dupKeyValues = {};

            /**
             * Dict that holds citation name replacements
             */

            this.replacements = {};

            /**
             * Populate reference template's index dicts
             * @param {string} reference name
             * @param (string) reference content
             * @param (integer) reference order number in template
             *
             * @return {void}
             */
            this.createIndexes = function (key, value, ix) {

                if (key in this.keys) {
                    this.keys[key].push(ix);
                    this.dupKeys[key] = this.keys[key];
                } else {
                    this.keys[key] = [ix];
                }

                if (value in this.values) {
                    this.values[value].push(ix);
                    this.dupValues[value] = this.values[value];
                } else {
                    this.values[value] = [ix];
                }

                if (key + '_' + value in this.keyValues) {
                    this.keyValues[key + '_' + value].push(ix);
                    this.dupKeyValues[key + '_' + value] = this.keyValues[key + '_' + value];
                } else {
                    this.keyValues[key + '_' + value] = [ix];
                }
            };

            /**
             * Recreate reference list template indexes
             *
             * @return {void}
             */
            this.reIndex = function () {
                var i, reference;
                this.keys = {};
                this.values = {};
                this.keyValues = {};

                for (i = 0; i < this.references.length; i++) {
                    reference = this.references[i];
                    if (typeof reference === 'object') {
                        this.keys[reference.name] = [i];
                        this.values[reference.content] = [i];
                        this.keyValues[reference.name + '_' + reference.content] = [i];
                    }
                }
            };

            /**
             * Process references indexes, remove duplicate
             *
             * @return {void}
             */

            this.processDuplicates = function () {
                this.processIndex(this.dupKeyValues, this.processDupKeyValues, this);
                this.processIndex(this.dupKeys, this.processDupKeys, this);
                this.processIndex(this.dupValues, this.processDupValues, this);
            };

            this.processIndex = function (indexObj, callBack, callbackObj) {
                // returnObj and dataObj are a bit of a hack for dupValues index. We need to get back the refIndex of the first duplicate value
                // to add it into the replacements array with the duplicate values that were deleted
                var returnObj, dataObj;
                for (var key in indexObj) {
                    if (indexObj.hasOwnProperty(key)) {
                        indexObj[key].forEach(function (refIndex, ix) {
                            returnObj = callBack.call(callbackObj, refIndex, ix, dataObj);
                            if (typeof returnObj === 'object') {
                                dataObj = returnObj;
                            }
                        });
                    }
                }
            };

            this.processDupKeyValues = function (refIndex, ix, dataObj) {
                if (ix > 0) {
                    var refData = this.delRef(refIndex);
                    this.changeEveryIndex(refData['name'], refData['content'], refIndex);
                }
            };

            this.processDupKeys = function (refIndex, ix, dataObj) {
                if (ix > 0) {
                    var refData = this.changeRefName(refIndex);
                    this.changeIndex(refData['oldName'], refIndex, this.keys);
                    this.addIndex(refData['newName'], refIndex, this.keys);
                    this.removeIndex(refData['oldName'] + '_' + refData['content'], this.keyValues);
                    this.addIndex(refData['newName'] + '_' + refData['content'], refIndex, this.keyValues);
                }
            };

            this.processDupValues = function (refIndex, ix, dataObj) {
                if (ix == 0) {
                    // get TemplateReference object
                    var refData = this.getRef(refIndex);
                    return (refData);
                } else {
                    var delrefData = this.delRef(refIndex);
                    this.removeIndex(delrefData['name'], this.keys);
                    this.changeIndex(delrefData['content'], refIndex, this.values);
                    this.removeIndex(delrefData['name'] + '_' + delrefData['content'], this.keyValues);
                    // add old and new reference name into replacements array
                    this.replacements[delrefData['name']] = dataObj['name'];
                }
            };

            this.delRef = function (refIndex) {
                var name = this.references[refIndex].name;
                var content = this.references[refIndex].content;
                this.references[refIndex] = null;
                return ({
                    'name': name, 'content': content
                });
            };

            this.changeRefName = function (refIndex) {
                var oldName = this.references[refIndex].name;
                var content = this.references[refIndex].content;
                var newName = this.getNewName(oldName);
                this.references[refIndex].name = newName;
                return ({
                    'oldName': oldName, 'content': content, 'newName': newName
                });
            };

            // Creates new reference name while making sure it is unique per template
            this.getNewName = function (oldName) {
                var prefix, randomValue, newName;

                randomValue = refcon.randomString(5);
                prefix = typeof oldName !== 'undefined' ? oldName + '_' : '';
                newName = prefix + randomValue;

                while (newName in this.keys) {
                    randomValue = refcon.randomString(5);
                    newName = prefix + randomValue;
                }
                return (newName);
            }

            this.changeIndex = function (key, refIndex, obj) {
                var ix = obj[key].indexOf(refIndex);
                if (ix > -1) obj[key].splice(ix, 1);
            };

            this.addIndex = function (key, value, obj) {
                obj[key] = [];
                obj[key].push(value);
            };

            this.removeIndex = function (key, obj) {
                delete obj[key];
            };

            this.getRef = function (refIndex) {
                return this.references[refIndex];
            };

            this.addRef = function (reference) {
                var count = this.references.push(reference);
                this.createIndexes(reference['name'], reference['content'], count - 1);
            }

            this.delRef = function (refIndex) {
                var name = this.references[refIndex].name;
                var content = this.references[refIndex].content;
                this.references[refIndex] = null;
                return ({
                    'name': name, 'content': content
                });
            };

            this.changeEveryIndex = function (key, value, refIndex) {
                this.changeIndex(key, refIndex, this.keys);
                this.changeIndex(value, refIndex, this.values);
                this.changeIndex(key + '_' + value, refIndex, this.keyValues);
                // dupKeys, dupValues and dupKeyValues get changed by reference
            };
        }
    };

    $(refcon.init);

}(mw, jQuery));