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User:Hippietrail/editor.js

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/** See talk page for details **/

/* DOM abbreviation function */
function newNode(tagname){

  var node = document.createElement(tagname);
  
  for( var i=1;i<arguments.length;i++ ){
    
    if(typeof arguments[i] == 'string'){ //Text
      node.appendChild( document.createTextNode(arguments[i]) );
      
    }else if(typeof arguments[i] == 'object'){ 
      
      if(arguments[i].nodeName){ //If it is a DOM Node
        node.appendChild(arguments[i]);
        
      }else{ //Attributes (hopefully)
        for(var j in arguments[i]){
          if(j == 'class'){ //Classname different because...
            node.className = arguments[i][j];
            
          }else if(j == 'style'){ //Style is special
            node.style.cssText = arguments[i][j];
            
          }else if(typeof arguments[i][j] == 'function'){ //Basic event handlers
            try{ node.addEventListener(j,arguments[i][j],false); //W3C
            }catch(e){try{ node.attachEvent('on'+j,arguments[i][j],"Language"); //MSIE
            }catch(e){ node['on'+j]=arguments[i][j]; }}; //Legacy
          
          }else{
            node.setAttribute(j,arguments[i][j]); //Normal attributes

          }
        }
      }
    }
  }
  
  return node;
}

/* Wrapper around API */
function API() {

    function request (query, callback)
    {
        var xhr = sajax_init_object();

        xhr.open('POST', '/w/api.php?format=json', true);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");                  
        xhr.send(query);
        xhr.onreadystatechange = function ()
        {
            if (xhr.readyState == 4)
            {
                callback(eval("("+xhr.responseText+")"));
            }
        }
    }

    function encode_array (arg, args)
    {
        if (arg instanceof Array)
            args = arg;

        return encodeURIComponent(Array.prototype.join.call(args,"|"));
    }

    function Query (what)
    {
        return function (props, callback)
        {
            request('action=query&' + what + "&" + props, callback); 
        }
    }

    var query = {

        titles: function (arg) {
            return Query('titles=' + encode_array(arg, arguments))
        },

        pageids: function (arg) {
            return Query('pageids=' + encode_array(arg, arguments))
        },

        revids: function (arg) {
            return Query('revids=' + encode_array(arg, arguments))
        },
        page: function (title)
        {
            //self is this without the interference from javascript
            var self = {
                query: query.titles(title),
                title: title,

                edit: function (callback, section)
                {
                    var q = 'prop=info|revisions&intoken=edit&rvprop=content|timestamp';

                    if (section != null)
                        section = '&rvsection=' + section;
                    else
                        section = '';

                    q += section;

                    self.query(q, function (res)
                    {
                        // should only be one pageid
                        for (var pageid in res.query.pages)
                        {
                            var page = res.query.pages[pageid];
                            var text = '';

                            if (page.revisions)
                                text = page.revisions[0]['*']

                            //the "save" function
                            callback(text, function (ntext, summary, postsave)
                            {
                                if (text == ntext || !ntext)
                                    return;

                                if(!summary)
                                    summary = "";

                                request('action=edit&title=' + encodeURIComponent(self.title) +
                                        '&text=' + encodeURIComponent(ntext) + section +
                                        '&summary=' + encodeURIComponent(summary) +
                                        '&token=' + encodeURIComponent(page.edittoken) +
                                        '&starttimestamp=' + encodeURIComponent(page.starttimestamp) + 
                                        '&basetimestamp=' + encodeURIComponent(page.revisions[0].timestamp),
                                        postsave
                                    )
                            });
                        }
                    });
                },

                create: function (text, summary, minor)
                {
                    self.edit(function(otext, save)
                    {
                        save(text, summary, minor);
                    });
                },

                parse: function (text, callback)
                {
                    request('action=parse&title=' + encodeURIComponent(self.title) + '&text=' + encodeURIComponent(text.replace('subst:','')), callback)
                },

                parseFragment: function (text, callback) //To prevent <p>'s being added
                {
                    self.parse('<div>' + text + '</div>', function (res)
                    {
                        res.parse.text['*'] = res.parse.text['*'].replace(/^<div>/,'').replace(/<\/div>$/,'');
                        callback(res);
                    });
                } 
            }
            return self;
        }
    };

    return query;
}

//A class to make settings persistant, and to store changes to them - yay
function Preferences (context)
{
    //Repeated calls with the same context should get the same preferences object.
    if (arguments.callee[context])
        return arguments.callee[context];
    else
        arguments.callee[context] = this;

    /**
     * Change the value of a preference.
     *
     * This will cause all the people subscribed to the function to recieve an
     * update.
     *
     * @param {string} name  The name of the preference
     * @param {string} value  The new value of the preference.
     */
    this.set = function (name, value)
    {
        if (value === null || storage[name] === value)
            return;

        storage[name] = value;

        if (callbacks[name])
            for (var i=0; i < callbacks[name].length; i++)
                callbacks[name][i](value);

        updateCookie();
    }

    /**
     * Get the value of a preference.
     *
     * If the preference isn't set, return the second argument or undefined.
     *
     * @param {string} name  The name of the preference
     * @param {string} def  The default value of the preference
     */
    this.get = function (name, def)
    {
        if (storage[name])
            return storage[name];
        else
            return def;
    }

    var storage = {};
    var callbacks = {};

    // Save storage into the cookie.
    function updateCookie ()
    {
        var value = "";
        for (var name in storage)
        {
            value += '&' + encodeURIComponent(name) + "=" + encodeURIComponent(storage[name]);
        }

        setCookie('preferences' + context, value)
    }
    
    // Load storage from the cookie. 
    function updateStorage ()
    {
        var value = getCookie('preferences' + context, value) || '';
        var pairs = value.split('&');

        for (var i=1; i < pairs.length; i++)
        {
            var val = pairs[i].split('=');

            if (storage[val[0]] === val[1])
                continue;

            if (callbacks[val[0]])
            {
                for (var j=0; j < callbacks[val[0]].length; j++)
                    callbacks[val[0]][j](val[1]);
            }

            storage[val[0]] = val[1];
        }
    }

    //__init__
    updateStorage();
}
/**
 * A generic page editor for the current page.
 *
 * This is a singleton and it displays a small interface in the top left after
 * the first edit has been registered.
 *
 * @public
 * this.page
 * this.addEdit
 * this.error
 *
 */
function Editor ()
{
    //Singleton
    if (arguments.callee.instance)
        return arguments.callee.instance
    else
        arguments.callee.instance = this;

    /**
     * Get the API page object associated with this editor
     */
    this.page = API().page(wgPageName);

    /**
     * Add the specific edit to the page.
     *
     * If the node is specified it will be highlighted now, and unhighlighted
     * when the change is saved.
     *
     * @param {edit}  The edit {redo:, undo:, edit:, summary:}
     * @param {*node}  The node to highlight.
     * @param {*boolean}  private: used when edit added using redo.
     */
    this.addEdit = function (edit, node, fromRedo)
    {
        if (node)
        {
            nodestack.push(node);
            node.style.cssText = "border: 2px #00FF00 dashed;"
        }

        if(! fromRedo)
            redostack = [];

        if(! (loaded && !loading))
            load()
        
        else
        {
            var ntext = false;
            try
            {
                ntext = edit.edit(currentText);
            }
            catch (e)
            {
                this.error("ERROR:" + e);
            }

            if (ntext)
            {
                currentText = ntext;
                edit.redo();
            }
            else
                return false;
        }
        fixButtons();
        editstack.push(edit);
    }

    /**
     * Display an error message to the user.
     *
     * @param {string|node}  The message.
     */
    this.error = function (message)
    { 
        if (!errorlog)
        {
            errorlog = newNode('ul',{style: "background-color: #FFDDDD; margin: 0px -10px -10px -10px; padding: 10px;"});
            presence.appendChild(errorlog);
        }
        errorlog.appendChild(newNode('li', message));
    }

    var thiz = this; // this is set incorrectly when private functions are used as callbacks.

    var editstack = []; // A list of the edits that have been applied to get currentText
    var redostack = []; // A list of the edits that have been recently undone.
    var nodestack = []; // A lst of nodes to which we have added highlighting

    var loaded = false; // Is the page-text loaded?
    var loading = false; // Is the page-text loading?

    var originalText = ""; // What was the contents of the page before we fiddled?
    var currentText = ""; // What is the contents now?

    var savebutton;
    var undobutton;
    var redobutton;

    var saveCallback; // The callback returned by the api's edit function to save.

    var presence; // The HTML element in the top-left
    var errorlog; // The ul for sticking errors in.
    var savelog; // The ul for save messages.

    // Disable useless buttons, enable useful ones.
    function fixButtons () 
    {
        if(! presence)
            return;
        presence.style.display = "block";
        undobutton.disabled = false; (editstack.length > 0 ? false : true);
        savebutton.disabled = false; undobutton.disabled;
        redobutton.disabled = false; (redostack.length > 0 ? false : true);
    }

    //Ensure that the currentText variable reflects the originalText with all
    //edits in the editstack
    function updateCurrentText ()
    {
        var text = originalText;
        for (var i=0; i < editstack.length; i++)
        {
            var ntext = false;
            try
            {
                ntext = editstack[i].edit(text);
            }
            catch (e)
            {
                thiz.error("ERROR:" + e);
            }
            if (ntext && ntext != text)
            {
                text = ntext;
                editstack[i].redo();
            }
            else
            {
                editstack = editstack.splice(0, i);
                break;
            }
        }
        currentText = text;
        fixButtons();
    }

    //Move an edit from the editstack to the redostack 
    function undo ()
    {
        if (editstack.length == 0)
            return false;
        var edit = editstack.pop();
        redostack.push(edit);
        edit.undo();

        updateCurrentText();
        fixButtons();
        return true;
    }

    //Move an edit from the redostack to the editstack
    function redo ()
    {
        if (redostack.length == 0)
            return;
        var edit = redostack.pop();
        thiz.addEdit(edit, null, true);
        fixButtons();
    }

    //Called on first interaction to request originalText and display presence
    function load ()
    {
        loading = true;
        thiz.page.edit(function (text, _save)
        {
            originalText = text;
            saveCallback = _save;
            
            loading = false;
            loaded = true;

            if (!presence)
            {
                savebutton = newNode('button',"Save Changes", {'click': save});
                undobutton = newNode('button',"Undo", {'click': undo});
                redobutton = newNode('button', "Redo", {'click':redo});

                presence = newNode('div',{'style':"position: fixed; top:0px; left: 0px; background-color: #00FF00; z-index: 10;padding: 30px;"})
                //Fix fixed positioning for IE6/
                /*@cc_on
                    @if (@_jscript_version <= 5.6)
                        presence.style.cssText = "position: absolute; top: expression((dummy = (document.documentElement.scrollTop || document.body.scrollTop || 0)) + 'px'); background-color: #00FF00; z-index: 10000; padding: 30px;"
                    @end
                @*/
                window.setTimeout(function () {
                    presence.style.backgroundColor = "#CCCCFF";
                    presence.style.padding = "10px";
                }, 400);

                presence.appendChild(newNode('div',{'style':"position: relative; top:0px; left:0px; margin: -10px; color: #0000FF;cursor:pointer;", click:function () {while(undo());presence.style.display = "none";}},"X"))
                document.body.insertBefore(presence, document.body.firstChild);
                fixButtons();

                presence.appendChild(newNode('p',
                    newNode('b', "Page Editing"), newNode('br'),
                    savebutton, newNode('br'), undobutton, redobutton))
            }

            updateCurrentText();
        });
        fixButtons();
    }

    //Send the currentText back to the server to save.
    function save (summary)
    {
        if (loading)
            window.setTimeout(save, 500);

        if (!loaded)
            throw "Not loaded..."; 

        loaded = false;

        var sum = {};
        for (var i=0; i<editstack.length; i++)
        {
            sum[editstack[i].summary] = true;
        }
        var summary = "";
        for (var name in sum)
        {
            summary += name + " ";
        }
        editstack = [];
        redostack = [];
        if (! savelog)
        {
            savelog = newNode('ul', {style: "background-color: #DDFFDD; margin: 0px -10px -10px -10px; padding: 10px;"});
            presence.appendChild(savelog);
        }
        var saveLi = newNode('li', 'Saving:' + summary + "...");
        savelog.appendChild(saveLi);
        originalText = currentText;
        fixButtons();
        var nst = []
        var node;
        while (node = nodestack.pop())
        {
            nst.push(node);
        }
        saveCallback(currentText, summary + "([[WT:EDIT|Assisted]])", function (res)
        {
            try {
                saveLi.appendChild(newNode('span', newNode('b', " Saved "),
                    newNode('a', {'href': wgScript + 
                    '?title=' + encodeURIComponent(mw.config.get('wgPageName')) + 
                    '&diff=' + encodeURIComponent(res.edit.newrevid) +
                    '&oldid=' + encodeURIComponent(res.edit.oldrevid)}, "(Show changes)")));
            }catch(e){
                if (res.error)
                {
                    thiz.error("Not saved: " + String(res.error.info));
                }
                else
                {
                    thiz.error(newNode('p',String(e)));
                }
            }

            for (var i=0; i < nst.length; i++)
                nst[i].style.cssText = "background-color: #0F0;border: 2px #0F0 solid;";

            window.setTimeout(function () {
                var node;
                while (node = nst.pop())
                    node.style.cssText = "";
            }, 400);
            fixButtons();
        
        });
        fixButtons();
    }
}

var util = {
    
    getVanillaIndexOf: function (str, text, pos)
    {
        if (!pos)
            pos = 0;
        var cpos = 0, tpos = 0, wpos = 0, spos = 0;
        do
        {
            cpos = text.indexOf('<!--', pos);
            tpos = text.indexOf('{'+'{', pos);
            wpos = text.indexOf('<nowiki>', pos);
            spos = text.indexOf(str, pos);

            pos = Math.min(
                Math.min(
                    cpos == -1 ? Infinity : cpos , 
                    tpos == -1 ? Infinity : tpos
                ), 
                Math.min(
                    wpos == -1 ? Infinity : wpos,
                    spos == -1 ? Infinity : spos
                )
            )

            if (pos == spos)
                return pos == Infinity ? -1 : pos;

            else if (pos == cpos)
                pos = text.indexOf('-->', pos) + 3;

            else if (pos == wpos)
                pos = text.indexOf('</nowiki>', pos) + 9;

            else if (pos == tpos) //FIXME
                pos = text.indexOf('}}', pos) + 2;


        } while (pos < Infinity)
        return -1;
    },

    validateNoWikisyntax: function(field, nonempty)
    {
        return function(txt, error)
        {
            if(/[\[\{\|#\}\]]/.test(txt))
                return error("Please don't use wiki markup ([]{}#|) in the " + field +".");
            if(nonempty && !txt)
                return error("Please specify a " + field + ".");
            return txt;
        }
    },

    escapeRe: function(txt)
    {
        return txt.replace(/([\\{}(\|)[\].?*+])/g, "\\$1");
    },

    getTransTable: function (text, gloss)
    {
        var pos = 0;
        var transect = [];
        while(pos > -1)
        {
            pos = util.getVanillaIndexOf('{'+'{trans-top', text, pos+1)	// }}
            if (util.matchGloss(text.substr(pos, text.indexOf('\n', pos)-pos), gloss))
            {
                transect.push(pos);
            }
        }
        if (transect.length > 1)
        {
            var poss = transect;
            transect = [];
            for (var i=0; i<poss.length; i++)
            {
                pos = poss[i];
                if (util.matchGloss(gloss, text.substr(pos, text.indexOf('\n', pos)-pos).replace('{'+'{trans-top','').replace(/\W/g, ' ')))
                {
                    transect.push(pos);
                }
            }
        }
        if (transect.length == 1)
        {
            pos = transect[0];
            pos = text.indexOf('}}\n', pos) + 3;
            var endpos = text.indexOf('{'+'{trans-bottom}}', pos); 
            if (endpos > -1 && pos > -1)
                return [pos, endpos];
        }

        return false;
    },

    matchGloss: function (line, gloss)
    {
        line = line.replace('{'+'{trans-top}}','{'+'{trans-top|Translations}}');
        var words = gloss.split(' ');
        var pos = 0;
        for (var i=0; i < words.length; i++)
        {
            pos = line.indexOf(words[i], pos);
            if (pos == -1)
                return false;
        }
        return pos > -1;
    },

    //User:Karelklic
    getTransGlossText: function (node) {
        var ret = '';
        var children = node.childNodes;
        for (var i=0; i<children.length; i++)
        {
            if (children[i].nodeType == 3)
                ret += children[i].nodeValue;
            else if (children[i].nodeName.match(/^(i|b)$/i))
                ret += util.getTransGlossText(children[i]);
            else if (ret.match(/\w$/)) //Prevent new words from being created across node boundaries
                ret += " ";
        }
        // all characters except a-zA-Z0-9 are changed to spaces
        return ret.replace(/\W/g, ' '); 
    },

    getTransGloss: function (ul)
    {
        var node = ul;
        while (node && node.className.indexOf('NavFrame') == -1)
            node = node.parentNode;

        if (!node) return ''; 

        var children = node.childNodes;
        for (var i=0; i< children.length; i++)
        {
            if(children[i].className && children[i].className.indexOf('NavHead') > -1)
                return util.getTransGlossText(children[i]);
            
        }
        return '';
    },

    isTrreq: function (li)
    {
        var spans = li.getElementsByTagName('span');
        return (spans && spans.length > 0 && spans[0].className.indexOf("trreq") > -1)
    }
};

/**
 * A small amount of common code that can be usefully applied to adder forms.
 *
 * An adder is assumed to be an object that has:
 *
 * .fields  A object mapping field names to either validation functions used
 *          for text fields, or the word 'checkbox'
 * 
 * .createForm  A function () that returns a newNode('form') to be added to the
 *              document (by appending to insertNode)
 * 
 * .onsubmit  A function (values, register (wikitext, callback)) that accepts 
 *            the validated set of values and processes them, the register
 *            function accepts wikitext and a continuation function to be 
 *            called with the result of rendering it.
 *
 * Before onsubmit or any validation functions are called, but after running
 * createForm, a new property .elements will be added to the adder which is a
 * dictionary mapping field names to HTML input elements.
 *
 * @param {editor}  The current editor.
 * @param {adder}  The relevant adder.
 * @param {insertNode}  Where to insert this in the document.
 */
function AdderWrapper (editor, adder, insertNode)
{
    var form = adder.createForm()
    var status = newNode('p');

    form.appendChild(status);
    insertNode.appendChild(form);

    adder.elements = {};

    //This is all because IE doesn't reliably allow form.elements['name']
    for (var i=0; i< form.elements.length; i++)
    {
        adder.elements[form.elements[i].name] = form.elements[i];
    }

    form.onsubmit = function ()
    {
        try
        {
            var submit = true;
            var values = {}
            for (var name in adder.fields)
            {
                if (adder.fields[name] == 'checkbox')
                {
                    values[name] = adder.elements[name].checked ? name : false;
                }
                else
                {
                    values[name] = adder.fields[name](adder.elements[name].value || '', function (msg) 
                    {
                        status.appendChild(newNode('span',{style:'color: red'}, msg, newNode('br'))); 
                        return false
                    });
                    
                    if (values[name] === false)
                        submit = false;
                }
            }
            if (!submit)
                return false;

            status.innerHTML = 'Loading...';
            
            adder.onsubmit(values, function (text, callback)
            {
                editor.page.parseFragment(text, function (res)
                {
                    callback(res.parse.text['*']);
                    status.innerHTML = "";
                });
            });   
        }
        catch(e)
        {
            status.innerHTML = "ERROR:" + e.description; 
            return false;
        }

        return false;
    }

}
// An adder for translations on en.wikt
function TranslationAdders (editor)
{
    function TranslationAdder (insertUl)
    {
        // Hippietrail
        var langmetadata = new LangMetadata ();

        this.fields =  {
            lang: function (txt, error)
            {
                if (txt && !/^((?:[a-z][a-z][a-z]?-)?[A-Z][a-z][a-z][a-z]|polytonic|unicode)$/.test(txt)) return txt;
                return error("Please use a language code. (en, fr, aaa)")
            },
            word: util.validateNoWikisyntax('translation', true),
            qual: util.validateNoWikisyntax('qualifier'),
            tr: util.validateNoWikisyntax('transcription'),
            alt: util.validateNoWikisyntax('display name'),
            sc: function (txt, error)
            {
                if (txt && !/^([A-Z][a-z]{3}|[a-z]{2}-Arab|polytonic|unicode)$/.test(txt))
                    return error(newNode('span', "Please use a ", newNode('a',{href: '/wiki/Category:Script templates'},"script template"), "(e.g. fa-Arab, Deva, polytonic)"))

                    if (!txt) 
                    txt = prefs.get('script-' + thiz.elements.lang.value, langmetadata.guessScript(thiz.elements.lang.value) || '');
                    if (txt == 'Latn')
                        txt = '';
                    return txt;
            },
            m: 'checkbox', f: 'checkbox', n: 'checkbox', c: 'checkbox', p: 'checkbox'
        };

        this.createForm = function ()
        {
            var controls = {
                lang: newNode('input', {size:4, type:'text', name:'lang', value:prefs.get('curlang',''), title:'The two or three letter ISO 639 language code'}),
                transliteration: newNode('span', newNode('a', {href: '/wiki/Wiktionary:Transliteration'}, "Transliteration"), ": ", 
                                     newNode('input', {name: "tr", title: "The word transliterated into the Latin alphabet."}), " (e.g. ázbuka for азбука)"),
                qualifier: newNode('p', "Qualifier: ", newNode('input', {name: 'qual', title: "A qualifier for the word"}), " (e.g. literally, formally, slang)"),
                display: newNode('p',"Page name: ", newNode('input', {name: 'alt', title: "The word with all of the dictionary-only diacritics."}), " (e.g. amo for amō)"),
                script: newNode('p', newNode('a', {href: '/wiki/Category:Script_templates'},"Script template"),": ", 
                    newNode('input', {name: 'sc', size: 6, title: "The script template to render this word in."}), "(e.g. Cyrl for Cyrillic, Latn for Latin)", newNode('br')),
                gender_m: newNode('span',newNode('input', {type: 'checkbox', name: 'm'}), 'masc. '),
                gender_f: newNode('span', newNode('input', {type: 'checkbox', name: 'f'}), 'fem. '),
                gender_n: newNode('span', newNode('input', {type: 'checkbox', name: 'n'}), 'neuter '),
                gender_c: newNode('span', newNode('input', {type: 'checkbox', name: 'c'}), 'common\u00A0gender '),
                plural: newNode('span', newNode('input', {type: 'checkbox', name: 'p'}), 'plural ', newNode('br'))
            };

            controls.gender = newNode('p', controls.gender_m, controls.gender_f, controls.gender_n, controls.gender_c, controls.plural);

            langInput = controls.lang;

            var showButton = newNode('span',{'click': function ()
            {
                if (!advancedMode)
                {
                    advancedMode = true;
                    showButton.innerHTML = " Less";
                }
                else
                {
                    advancedMode = false;
                    showButton.innerHTML = " More";
                }
                updateScriptGuess.call(langInput, true);
            }, 'style':"color: #0000FF;cursor: pointer;"}, advancedMode ? " Less" : " More");

            function autoTransliterate () {
                thiz.elements.alt.value = langmetadata.generateAltForm(thiz.elements.lang.value, thiz.elements.word.value) || '';
            }
            function updateScriptGuess (preserve) {
                preserve = (preserve === true);

                //show all arguments
                function show ()
                {
                    for (var i=0; i<arguments.length; i++)
                    {
                        if (arguments[i].nodeName.toLowerCase() == 'p')
                            arguments[i].style.display = "block";
                        else
                            arguments[i].style.display = "inline";
                    }

                }
                //hide all arguments
                function hide ()
                {
                    for (var i=0; i < arguments.length; i++)
                        arguments[i].style.display = "none";
                }
                //if the first argument is false hide the remaining arguments, otherwise show them.
                function toggle (condition)
                {
                    if (condition) //eww...
                        show.apply(this, [].splice.call(arguments, 1, arguments.length - 1));
                    else
                        hide.apply(this, [].splice.call(arguments, 1, arguments.length - 1));
                }

                if (!preserve)
                    langInput.value = cleanLangCode(langInput.value);

                var guess = prefs.get('script-' + langInput.value, langmetadata.guessScript(langInput.value || ''));
                if (!preserve)
                {
                    if (guess)
                        thiz.elements.sc.value = guess;
                    else
                        thiz.elements.sc.value = '';

                    autoTransliterate();
                }

                var lang = langInput.value;

                if (!advancedMode)
                {
                    var g = langmetadata.getGenders(lang);

                    if (!lang)
                    {
                        hide(controls.gender);
                    }
                    else if (g == undefined)
                    {
                        show(controls.gender,controls.gender_m, controls.gender_f, controls.gender_n, controls.gender_c);
                    }
                    else
                    {
                        toggle(g.indexOf('m') > -1, controls.gender);
                        toggle(g.indexOf('m') > -1, controls.gender_m);
                        toggle(g.indexOf('f') > -1, controls.gender_f);
                        toggle(g.indexOf('n') > -1, controls.gender_n);
                        toggle(g.indexOf('c') > -1, controls.gender_c);
                    }

                    var p = langmetadata.hasPlural(lang);

                    toggle(p !== false, controls.plural);
                    toggle(g || p, controls.gender); 

                    toggle(guess && guess != 'Latn', controls.transliteration);

                    var alt = langmetadata.needsAlt(lang);

                    toggle(alt === true, controls.display);

                    hide(controls.qualifier); //only in more
                    hide(controls.script); //should be in less when array returned from .getScripts

                }
                else
                {
                    show(controls.gender_m, controls.gender_f, controls.gender_n, controls.gender_c,
                        controls.plural, controls.transliteration, controls.qualifier, controls.display,
                        controls.script);
                }
            } 

            //In browsers other than IE this can be in the newNode function above
            langInput.onchange = updateScriptGuess;

            window.setTimeout(function () {updateScriptGuess.call(langInput)}, 0);

            inputForm = newNode('form',
                        newNode('p', newNode('a',{href:"/wiki/User_talk:Conrad.Irwin/editor.js#Usage"},"Help"),' ',
                            langInput, newNode('b',': '), newNode('input', {'name': 'word', size:20, change:autoTransliterate}),
                            newNode('input',{'type': 'submit', 'value':'Preview translation'}), showButton
                        ), 
                        controls.gender,
                        controls.transliteration,
                        controls.display,
                        controls.qualifier,
                        controls.script
                    )
            return inputForm;
        }

        this.onsubmit = function (values, render)
        {
            var wikitext = '{'+'{subst:' + values.lang + '}}: ' + 
            (values.qual? '{'+'{qualifier|' + values.qual + '}} ' : '') +  
            '{'+'{t' + (langmetadata.hasWiktionary(values.lang) ? '' : 'ø') +
            '|' + values.lang + '|' + (values.alt ? values.alt : values.word) + 
            (values.m ? '|m' : '') +
            (values.f ? '|f' : '') +
            (values.n ? '|n' : '') +
            (values.c ? '|c' : '') +
            (values.p ? '|p' : '') +
            (values.tr ? '|tr=' + values.tr : '') + 
            ((values.alt && values.alt != values.word) ? '|alt=' + values.word : '') +
            (values.sc ? '|sc=' + values.sc  : '') + '}}';
            render(wikitext, function (html) { registerEdits(values, wikitext, html)});
        }

        var thiz = this;
        var prefs = new Preferences('TranslationAdder');
        var langInput;
        var inputForm;
        var advancedMode = prefs.get('more-display', 'none') != 'none'; //from ye days of yore

        //Reset elements to default values.
        function resetElements ()
        {
            if (prefs.get('more-display', 'none') != advancedMode ? 'block' : 'none')
                prefs.set('more-display', advancedMode ? 'block' : 'none'); //named for compatibility
            thiz.elements.word.value = thiz.elements.tr.value = thiz.elements.alt.value = thiz.elements.qual.value = '';
            thiz.elements.m.checked = thiz.elements.f.checked = thiz.elements.n.checked = thiz.elements.c.checked = thiz.elements.p.checked = false;
            prefs.set('curlang', thiz.elements.lang.value);
            if ((thiz.elements.sc.value || 'Latn') != (prefs.get('script-'+thiz.elements.lang.value, langmetadata.guessScript(thiz.elements.lang.value) || 'Latn')))
            {
                prefs.set('script-'+thiz.elements.lang.value, thiz.elements.sc.value); 
                thiz.elements.lang.update();
            }
        }

        // This is onsubmit after the wikitext has been rendered to give content
        function registerEdits (values, wikitext, content)
        {
            var li = newNode('li');
            li.innerHTML = content;
            var lang = getLangName(li);
            var summary = 't+' + values.lang + ':[[' + (values.alt || values.word) + ']]';

            var insertBefore = null;
            var nextLanguage = null;

            function addEdit (edit, span)
            {
                editor.addEdit({
                    'undo': function () 
                    {
                        edit.undo();
                        if (thiz.elements.word.value == "" &&
                            thiz.elements.tr.value == "" &&
                            thiz.elements.alt.value == "" &&
                            thiz.elements.qual.value == "")
                        {
                            var fields = ["lang","word","alt","qual","tr","sc"];
                            var cb = "mnfcp".split("");
                            for (var i=0; i < fields.length; i++)
                            {
                                thiz.elements[fields[i]].value = values[fields[i]];
                            }
                            for (var i=0; i < cb.length; i++)
                            {
                                thiz.elements[fields[i]].checked = values[fields[i]];
                            }
                        }
                    },
                    'redo': function ()
                    {
                        edit.redo();
                        var fields = ["lang","word","alt","qual","tr","sc"];
                        for (var i=0; i < fields.length; i++)
                        {
                            if (thiz.elements[fields[i]].value != values[fields[i]])
                                return;
                        }
                        resetElements();
                    },
                    'edit': edit.edit,
                    'summary': summary
                }, span);
            }


            if (lang)
            {
                //Get all li's in this table row. 
                var lis = [];
                var ls = insertUl.parentNode.parentNode.getElementsByTagName('li');
                for (var j=0; j < ls.length; j++)
                    lis.push(ls[j]);

                ls = insertUl.parentNode.parentNode.getElementsByTagName('dd');
                for (var j=0; j < ls.length; j++)
                    lis.push(ls[j]);

                for (var j=0; j < lis.length; j++)
                {
                    if (lis[j].getElementsByTagName('form').length > 0)
                        continue;
                    var ln = getLangName(lis[j]);
                    if (ln == lang)
                    {
                        var span = newNode('span');
                        var parent = lis[j];
                        if (util.isTrreq(parent))
                        {
                            span.innerHTML = content;
                            var trspan = parent.getElementsByTagName('span')[0];
                            addEdit({
                                'redo': function () { parent.removeChild(trspan); parent.appendChild(span); },
                                'undo': function () { parent.removeChild(span); parent.appendChild(trspan); },
                                'edit': getEditFunction(values, wikitext, ln, values.lang, true, function (text, ipos)
                                {
                                    //Converting a Translation request into a translation
                                    var lineend = text.indexOf('\n', ipos);
                                    return text.substr(0, ipos) + wikitext + text.substr(lineend);
                                })
                            }, span);
                        }
                        else
                        {
                            if (parent.getElementsByTagName('ul').length + parent.getElementsByTagName('dl').length == 0)
                            {
                                span.innerHTML = ", " + content.substr(content.indexOf(':') + 1);
                                addEdit({
                                    'redo': function () { parent.appendChild(span) },
                                    'undo': function () { parent.removeChild(span) },
                                    'edit': getEditFunction(values, wikitext, ln, values.lang, false, function (text, ipos)
                                            {
                                                 //We are adding the wikitext to a list of translations that already exists.
                                                 var lineend = text.indexOf('\n', ipos);
                                                 wikitext = wikitext.replace('subst:','');
                                                 wikitext = wikitext.substr(wikitext.indexOf(':') + 1);
                                                 return text.substr(0, lineend) + ", " + wikitext + text.substr(lineend);
                                            })
                                }, span);
                                return resetElements();
                            }
                            else
                            {
                                var node = parent.firstChild;
                                var hastrans = false;
                                while (node)
                                {
                                    if (node.nodeType == 1)
                                    {
                                        var nn = node.nodeName.toUpperCase();
                                        if (nn == 'UL' || nn == 'DL')
                                        {
                                            span.innerHTML = (hastrans ? ", ": " ") + content.substr(content.indexOf(':') + 1);
                                            addEdit({
                                                'redo': function () { parent.insertBefore(span, node) },
                                                'undo': function () { parent.removeChild(span) },
                                                'edit': getEditFunction(values, wikitext, ln, values.lang, false, function (text, ipos)
                                                        {
                                                            //Adding the translation to a language that has nested translations under it
                                                            var lineend = text.indexOf('\n', ipos);
                                                            wikitext = wikitext.replace('subst:','');
                                                            wikitext = wikitext.substr(wikitext.indexOf(':') + 1);
                                                            return text.substr(0, lineend) + (hastrans ? ", " : " ") + wikitext + text.substr(lineend);
                                                        })
                                            }, span);
                                            return resetElements();
                                        }
                                        else
                                        {
                                            hastrans = true;
                                        }

                                    }
                                    node = node.nextSibling;
                                }
                            }
                        }
                        return resetElements();
                    }
                    else if (ln && ln > lang && (!nextLanguage || ln < nextLanguage) && lis[j].parentNode.parentNode.nodeName.toLowerCase() != 'li')
                    {
                        nextLanguage = ln;
                        var parent = lis[j];
                        insertBefore = [
                            {
                                'redo': function () {parent.parentNode.insertBefore(li, parent);},
                                'undo': function () {parent.parentNode.removeChild(li)},
                                'edit': getEditFunction(values, wikitext, ln, getLangCode(parent), util.isTrreq(parent), function (text, ipos)
                                        {
                                            //Adding a new language's translation before another language's translation
                                            var lineend = text.lastIndexOf('\n', ipos);
                                            return text.substr(0, lineend) + "\n* " + wikitext + text.substr(lineend);
                                        })
                            },li];
                    }
                }
            }
            if (values.nested)
            {
                nextLanguage = null;
                insertBefore = null;

                var lis = insertUl.parentNode.parentNode.getElementsByTagName('li');
                for (var j = 0; j < lis.length; j++)
                {
                    //Ignore the editor form
                    if (lis[j].getElementsByTagName('form').length > 0)
                        continue;

                    //Don't look at nested translations
                    if (lis[j].parentNode.parentNode.nodeName.toLowerCase() != 'li')
                        continue;

                    var ln = getLangName(lis[j]);
                    if (ln == values.nested)
                    {
                        var sublis = lis[j].getElementsByTagName('li');

                        if (! sublis.length)
                            sublis = lis[j].getElementsByTagName('dd');

                        if (sublis.length == 0)
                        {
                            var parent = lis[j];
                            var dd = newNode('dd');
                            var dl = newNode('dl', dd);
                            dd.innerHTML = content;

                            addEdit({
                                'redo': function () {parent.appendChild(dl);},
                                'undo': function () {parent.removeChild(dl);},
                                'edit': getEditFunction(values, wikitext, values.nested, null, util.isTrreq(parent), function (text, ipos)
                                        {
                                            //Adding a new dl to an existing translation line
                                            var lineend = text.indexOf('\n', ipos);
                                            return text.substr(0, lineend) + "\n*: " + wikitext + text.substr(lineend);
                                        })
                            }, dd);
                        }
                        else
                        {
                        //Adding a new dd to an existing dl

                        }
                        
                        return resetElements();
                    }
                    else if (ln && ln > values.nested && (!nextLanguage || ln < nextLanguage))
                    {
                        nextLanguage = ln;
                        var parent = lis[j];
                        li.innerHTML = values.nested + ":" + "<dl><dd>" + content + "</dd></dl>";
                        insertBefore = [
                            {
                                'redo': function () {parent.parentNode.insertBefore(li, parent);},
                                'undo': function () {parent.parentNode.removeChild(li)},
                                'edit': getEditFunction(values, wikitext, ln, getLangCode(parent), util.isTrreq(parent), function (text, ipos)
                                        {
                                            //Adding a new nested translation section.
                                            var lineend = text.lastIndexOf('\n', ipos);
                                            return text.substr(0, lineend) + "* " + values.nested + "\n*: " + wikitext + text.substr(lineend);
                                        })
                            },li];
                    }
                }
            }

            li.className = "trans-" + wikitext.replace(/.*\{\{subst:/,'').replace(/\}\}.*/, '');
            if (insertBefore)
            {
                addEdit(insertBefore[0], insertBefore[1]);
            }
            else
            {
                //Append the translations to the end (no better way found)
                addEdit({
                    'redo': function () {insertUl.appendChild(li);},
                    'undo': function () {insertUl.removeChild(li)},
                    'edit': getEditFunction(values, wikitext)
                }, li);
            }
            return resetElements();
        }

        //Get the wikitext modification for the current form submission.
        function getEditFunction (values, wikitext, findLanguage, findLangCode, trreq, callback)
        {
            return function(text)
            {
                var p = util.getTransTable(text, util.getTransGloss(insertUl));

                if (!p)
                    return editor.error("Could not find translation table for '" + values.lang + ":" + values.word + "'. Please improve glosses");

                var stapos = p[0];
                var endpos = p[1];

                if (findLanguage)
                {
                    var ipos = 0;
                    if (trreq)
                    {
                        ipos = text.indexOf('{'+'{trreq|'+findLanguage+'}}', stapos);
                        if (ipos < 0 || ipos > endpos)
                            ipos = text.indexOf('{'+'{trreq|'+findLangCode+'}}', stapos);
                    }
                    else
                    {

                        ipos = text.substr(stapos).search(RegExp("\\*[:*]? ?\\[\\[" + util.escapeRe(findLanguage) + "\\]\\]:")) + stapos;
                        if (ipos < stapos || ipos > endpos)
                            ipos = text.substr(stapos).search(RegExp('\\*[:*]? ?' + util.escapeRe(findLanguage) + ':')) + stapos;
                        if (ipos < stapos| ipos > endpos)
                            ipos = text.indexOf('{'+'{subst:'+findLangCode+'}}:', stapos);
                    }
                    if (ipos >= stapos && ipos < endpos)
                    {
                        return callback(text, ipos, trreq);
                    }
                    else
                    {
                        return editor.error("Could not find translation entry for '" + values.lang + ":" +values.word + "'. Please reformat");
                    }
                }

                return text.substr(0, endpos) + "* " + wikitext + "\n" + text.substr(endpos);
            };
        }

        //Given user input, return a language code. For all languages in ISO 639-1, this will convert the name and the ISO 639-3 code to the -1 code.
        //FIXME: move to meta-data
        function cleanLangCode(lang)
        {
            var key = lang.toLowerCase().replace(' ','');
            var dict = {aar:"aa",afar:"aa",abk:"ab",abkhazian:"ab",afr:"af",afrikaans:"af",aka:"ak",akan:"ak",amh:"am",amharic:"am",ara:"ar",arabic:"ar",arg:"an",aragonese:"an",asm:"as",assamese:"as",ava:"av",avaric:"av",ave:"ae",avestan:"ae",aym:"ay",aymara:"ay",aze:"az",azerbaijani:"az",bak:"ba",bashkir:"ba",bam:"bm",bambara:"bm",bel:"be",belarusian:"be",ben:"bn",bengali:"bn",bis:"bi",bislama:"bi",bod:"bo",tibetan:"bo",bos:"bs",bosnian:"bs",bre:"br",breton:"br",bul:"bg",bulgarian:"bg",cat:"ca",catalan:"ca",ces:"cs",czech:"cs",cha:"ch",chamorro:"ch",che:"ce",chechen:"ce",chu:"cu",churchslavic:"cu",chv:"cv",chuvash:"cv",cor:"kw",cornish:"kw",cos:"co",corsican:"co",cre:"cr",cree:"cr",cym:"cy",welsh:"cy",dan:"da",danish:"da",deu:"de",german:"de",div:"dv",dhivehi:"dv",dzo:"dz",dzongkha:"dz",ell:"el",greek:"el",eng:"en",english:"en",epo:"eo",esperanto:"eo",est:"et",estonian:"et",eus:"eu",basque:"eu",ewe:"ee",fao:"fo",faroese:"fo",fas:"fa",persian:"fa",fij:"fj",fijian:"fj",fin:"fi",finnish:"fi",fra:"fr",french:"fr",fry:"fy",westernfrisian:"fy",ful:"ff",fulah:"ff",gla:"gd",scottishgaelic:"gd",gle:"ga",irish:"ga",glg:"gl",galician:"gl",glv:"gv",manx:"gv",grn:"gn",guarani:"gn",guj:"gu",gujarati:"gu",hat:"ht",haitian:"ht",hau:"ha",hausa:"ha",heb:"he",hebrew:"he",her:"hz",herero:"hz",hin:"hi",hindi:"hi",hmo:"ho",hirimotu:"ho",hrv:"hr",croatian:"hr",hun:"hu",hungarian:"hu",hye:"hy",armenian:"hy",ibo:"ig",igbo:"ig",ido:"io",iii:"ii",sichuanyi:"ii",iku:"iu",inuktitut:"iu",ile:"ie",interlingue:"ie",ina:"ia",interlingua:"ia",ind:"id",indonesian:"id",ipk:"ik",inupiaq:"ik",isl:"is",icelandic:"is",ita:"it",italian:"it",jav:"jv",javanese:"jv",jpn:"ja",japanese:"ja",kal:"kl",kalaallisut:"kl",kan:"kn",kannada:"kn",kas:"ks",kashmiri:"ks",kat:"ka",georgian:"ka",kau:"kr",kanuri:"kr",kaz:"kk",kazakh:"kk",khm:"km",centralkhmer:"km",kik:"ki",kikuyu:"ki",kin:"rw",kinyarwanda:"rw",kir:"ky",kirghiz:"ky",kom:"kv",komi:"kv",kon:"kg",kongo:"kg",kor:"ko",korean:"ko",kua:"kj",kuanyama:"kj",kur:"ku",kurdish:"ku",lao:"lo",lat:"la",latin:"la",lav:"lv",latvian:"lv",lim:"li",limburgan:"li",lin:"ln",lingala:"ln",lit:"lt",lithuanian:"lt",ltz:"lb",luxembourgish:"lb",lub:"lu",lubakatanga:"lu",lug:"lg",ganda:"lg",mah:"mh",marshallese:"mh",mal:"ml",malayalam:"ml",mar:"mr",marathi:"mr",mkd:"mk",macedonian:"mk",mlg:"mg",malagasy:"mg",mlt:"mt",maltese:"mt",mon:"mn",mongolian:"mn",mri:"mi",maori:"mi",msa:"ms",malay:"ms",mya:"my",burmese:"my",nau:"na",nauru:"na",nav:"nv",navajo:"nv",nbl:"nr",southndebele:"nr",nde:"nd",northndebele:"nd",ndo:"ng",ndonga:"ng",nep:"ne",nepali:"ne",nld:"nl",dutch:"nl",nno:"nn",norwegiannynorsk:"nn",nob:"nb",norwegianbokmal:"nb",nor:"no",norwegian:"no",nya:"ny",nyanja:"ny",oci:"oc",occitan:"oc",oji:"oj",ojibwa:"oj",ori:"or",oriya:"or",orm:"om",oromo:"om",oss:"os",ossetian:"os",pan:"pa",panjabi:"pa",pli:"pi",pali:"pi",pol:"pl",polish:"pl",por:"pt",portuguese:"pt",pus:"ps",pushto:"ps",que:"qu",quechua:"qu",roh:"rm",romansh:"rm",ron:"ro",romanian:"ro",run:"rn",rundi:"rn",rus:"ru",russian:"ru",sag:"sg",sango:"sg",san:"sa",sanskrit:"sa",sin:"si",sinhala:"si",slk:"sk",slovak:"sk",slv:"sl",slovenian:"sl",sme:"se",northernsami:"se",smo:"sm",samoan:"sm",sna:"sn",shona:"sn",snd:"sd",sindhi:"sd",som:"so",somali:"so",sot:"st",southernsotho:"st",spa:"es",spanish:"es",sqi:"sq",albanian:"sq",srd:"sc",sardinian:"sc",srp:"sr",serbian:"sr",ssw:"ss",swati:"ss",sun:"su",sundanese:"su",swa:"sw",swahili:"sw",swe:"sv",swedish:"sv",tah:"ty",tahitian:"ty",tam:"ta",tamil:"ta",tat:"tt",tatar:"tt",tel:"te",telugu:"te",tgk:"tg",tajik:"tg",tgl:"tl",tagalog:"tl",tha:"th",thai:"th",tir:"ti",tigrinya:"ti",ton:"to",tonga:"to",tsn:"tn",tswana:"tn",tso:"ts",tsonga:"ts",tuk:"tk",turkmen:"tk",tur:"tr",turkish:"tr",twi:"tw",uig:"ug",uighur:"ug",ukr:"uk",ukrainian:"uk",urd:"ur",urdu:"ur",uzb:"uz",uzbek:"uz",ven:"ve",venda:"ve",vie:"vi",vietnamese:"vi",vol:"vo",volapuk:"vo",wln:"wa",walloon:"wa",wol:"wo",wolof:"wo",xho:"xh",xhosa:"xh",yid:"yi",yiddish:"yi",yor:"yo",yoruba:"yo",zha:"za",zhuang:"za",zho:"zh",chinese:"zh",zul:"zu",zulu:"zu"};
            if (dict[key])
                return dict[key];
            else
                return lang;
        }
        // For an <li> in well-formed translation sections, return the language name.
        function getLangName(li)
        {
            var guess = li.textContent || li.innerText;

            if (guess)
                guess = guess.substr(0, guess.indexOf(':'));

            if (guess == 'Template')
                return false;

            return guess;
        }

        // Try to get the language code from an <li> containing { {t t+ or t-	// }}
        function getLangCode(li)
        {
            var spans = li.getElementsByTagName('span');
            for (var i=0; i < spans.length; i++)
            {
                if (spans[i].className == "tlc")
                    return spans[i].innerHTML;
            }
            if (li.className.indexOf('trans-') == 0)
                return li.className.substr(2);
            return false;
        }

    }
    var tables = document.getElementsByTagName('table');
    for (var i=0; i<tables.length; i++)
    {
        if (tables[i].className.indexOf('translations') > -1 && util.getTransGloss(tables[i]) != 'Translations to be checked')
        {
            var _lists = tables[i].getElementsByTagName('ul');
            var lists = [];
            for (var j=0; j<_lists.length; j++)
                if (_lists[j].parentNode.nodeName.toLowerCase() == 'td')
                    lists.push(_lists[j]);

            if (lists.length == 0)
            {
                tables[i].getElementsByTagName('td')[0].appendChild(newNode('ul'));
                lists = tables[i].getElementsByTagName('ul');
            }
            if (lists.length == 1)
            {
                var table = tables[i].getElementsByTagName('td')[2]
                if (table)
                {
                    table.appendChild(newNode('ul'));
                    lists = tables[i].getElementsByTagName('ul');
                }
            }
            if (lists)
            {
                var li = newNode('li');
                var ul = lists[lists.length - 1];
                var table = tables[i];
                if (table.getElementsByTagName('tbody').length > 0)
                    table = table.getElementsByTagName('tbody')[0];
                table.appendChild(newNode('tr', newNode('td'), newNode('td'), newNode('td', {'style':'text-align: left'},newNode('ul', li))));
                new AdderWrapper(editor, new TranslationAdder(ul), li);
            }
        }
    }
}

function TranslationBalancers(editor)
{
    function TranslationBalancer (insertTd)
    {
        var left;
        var right;
        var moveLeft;
        var moveRight;

        //create the form
        function init ()
        {
            var cns = insertTd.parentNode.childNodes;
            var tds = []; 
            for (var i=0; i<cns.length; i++)
            {
                if (cns[i].nodeName.toUpperCase() == 'TD')
                    tds.push(cns[i])
            }

            left = tds[0].getElementsByTagName('ul');
            if (left.length > 0)
                left = left[0];
            else
            {
                left = newNode('ul');
                tds[0].appendChild(left);
            }

            right = tds[2].getElementsByTagName('ul');
            if (right.length > 0)
                right = right[0];
            else
            {
                right = newNode('ul');
                tds[2].appendChild(right);
            }

            moveLeft = newNode('input',{'type':'submit','name':'ml', 'value':'←', 'click': function(){return getEditObject('←')}});
            moveRight = newNode('input',{'type':'submit','name':'mr', 'value':'→', 'click': function(){return getEditObject('→')}});

            var form = newNode('form', moveLeft, newNode('br'), moveRight);
            insertTd.appendChild(form);
            form.onsubmit = function () { return false; }
        }

        //store the edit object with the editor
        function getEditObject(move)
        {
            if (move == '→')
            {
                var li = left.lastChild;
                while (li && li.nodeName.toLowerCase() != 'li')
                    li = li.previousSibling;

                if (li && li.childNodes.length > li.getElementsByTagName('form').length)
                {
                    editor.addEdit({
                        'redo': function () {left.removeChild(li); right.insertBefore(li, right.firstChild);},
                        'undo': function () {right.removeChild(li); left.appendChild(li);},
                        'edit': getEdit(util.getTransGloss(moveRight.parentNode), true),
                        'summary': 't-balance'
                    });
                }
            }
            else if (move == '←')
            {
                var li = right.firstChild;
                while (li && li.nodeName.toLowerCase() != 'li')
                    li = li.nextSibling;

                if (li && li.childNodes.length > li.getElementsByTagName('form').length)
                {
                    editor.addEdit({
                        'redo': function () {right.removeChild(li); left.appendChild(li);},
                        'undo': function () {left.removeChild(li); right.insertBefore(li, right.firstChild);},
                        'edit': getEdit(util.getTransGloss(moveLeft.parentNode), false),
                        'summary': 't-balance'
                    });
                }
            }
        }

        //get the wikitext modification
        function getEdit(gloss, moveRight)
        {
            return function (text)
            {
                var p = util.getTransTable(text, gloss);

                if (!p)
                    return editor.error("Could not find translation table, please improve glosses.");

                var stapos = p[0];
                var endpos = p[1];

                var midpos = text.indexOf('{'+'{trans-mid}}', stapos);

                if (midpos < stapos || midpos > endpos)
                    return editor.error("Could not find {"+"{trans-mid}}, please correct page.");

                var midstart = text.lastIndexOf("\n", midpos);
                var midend = text.indexOf("\n", midpos);

                if (moveRight)
                {
                    var linestart = text.lastIndexOf("\n", midstart - 3);
                    while (/^[:*#;]$/.test(text.substr(linestart+2,1)))
                        linestart = text.lastIndexOf("\n", linestart - 1);

                    return text.substr(0, linestart) + text.substr(midstart, midend - midstart)
                           + text.substr(linestart, midstart - linestart) + text.substr(midend);
                }
                else
                {
                    var lineend = text.indexOf("\n", midend + 3);
                    while (/^[:*#;]$/.test(text.substr(lineend+2,1)))
                        lineend = text.indexOf("\n", lineend + 1);

                    return text.substr(0, midstart) + text.substr(midend, lineend - midend)
                            + text.substr(midstart, midend - midstart) + text.substr(lineend);
                }
            }
        }
        init();
    }

    var tables = document.getElementsByTagName('table');
    for (var i=0; i<tables.length; i++)
    {
        if (tables[i].className.indexOf('translations') > -1 && util.getTransGloss(tables[i]) != 'Translations to be checked')
        {
            var tr = tables[i].getElementsByTagName('tr')[0];

            var passed = 0;
            for (var j=0; j<tr.childNodes.length; j++)
            {
                if (tr.childNodes[j].nodeName.toUpperCase() == 'TD')
                {
                    if (passed == 1)
                    {
                        new TranslationBalancer(tr.childNodes[j]);
                    }
                    passed ++;
                }
            }
        }
    }

}

function LangMetadata ()
{
    //Singleton
    if (arguments.callee.instance)
        return arguments.callee.instance
    else
        arguments.callee.instance = this;


    var metadata = {aa:{hw:true,sc:["Latn","Ethi"]},ab:{hw:true,sc:["Cyrl","Latn","Geor"]},af:{g:"",hw:true,p:true,sc:"Latn"},ak:{hw:true},akk:{g:"mf",p:true,sc:"Xsux"},als:{hw:true},am:{g:"mf",hw:true,p:true,sc:"Ethi"},an:{hw:true,sc:"Latn"},ang:{alt:true,g:"mfn",hw:true,p:true,sc:"Latn"},ar:{alt:true,g:"mf",hw:true,p:true,sc:"Arab"},arc:{g:"mf",p:true,sc:"Hebr"},arz:{alt:true,g:"mf",p:true,sc:"Arab"},as:{hw:true,sc:"Beng"},ast:{g:"mf",hw:true,p:true,sc:"Latn"},av:{hw:true,sc:"Cyrl"},ay:{hw:true},az:{alt:false,g:"",hw:true,sc:["Latn","Cyrl","Arab"]},ba:{hw:true,sc:"Cyrl"},bar:{sc:"Latn"},be:{g:"mfn",hw:true,p:true,sc:["Cyrl","Latn"]},"be-x-old":{sc:"Cyrl"},bg:{g:"mfn",hw:true,p:true,sc:"Cyrl"},bh:{hw:true,sc:"Deva"},bhb:{sc:"Deva"},bi:{hw:true,sc:"Latn"},bm:{hw:true,sc:["Latn","Nkoo","Arab"]},bn:{g:"",hw:true,sc:"Beng"},bo:{hw:true,sc:"Tibt"},br:{g:"mf",hw:true,sc:"Latn"},bs:{hw:true,sc:"Latn"},ca:{g:"mf",hw:true,p:true,sc:"Latn"},ch:{hw:true,sc:"Latn"},chr:{hw:true,sc:"Cher"},co:{hw:true,sc:"Latn"},cr:{hw:true,sc:"Cans"},crh:{alt:false,g:"",sc:"Latn"},cs:{g:"mfn",hw:true,p:true,sc:"Latn"},csb:{hw:true},cu:{g:"mfn",p:true,sc:["Cyrs","Glag"]},cv:{alt:false,g:"",sc:"Cyrl"},cy:{g:"mf",hw:true,p:true,sc:"Latn"},da:{g:"cn",hw:true,p:true,sc:"Latn"},de:{g:"mfn",hw:true,p:true,sc:"Latn"},dv:{hw:true,p:true,sc:"Thaa"},dz:{hw:true,sc:"Tibt"},el:{g:"mfn",hw:true,p:true,sc:"Grek"},en:{g:"",hw:true,p:true,sc:"Latn"},eo:{g:"",hw:true,p:true,sc:"Latn"},es:{alt:false,g:"mf",hw:true,p:true,sc:"Latn"},et:{alt:false,g:"",hw:true,p:true,sc:"Latn"},ett:{p:true,sc:"Ital"},eu:{alt:false,g:"",hw:true,p:true,sc:"Latn"},fa:{g:"",hw:true,sc:"Arab",wsc:"fa-Arab"},fi:{g:"",hw:true,p:true,sc:"Latn"},fil:{g:"",p:false,sc:"Latn"},fj:{hw:true,sc:"Latn"},fo:{g:"mfn",hw:true,sc:"Latn"},fr:{alt:false,g:"mf",hw:true,p:true,sc:"Latn"},fy:{hw:true,sc:"Latn"},ga:{hw:true,sc:"Latn"},gd:{hw:true,sc:"Latn"},gez:{sc:"Ethi"},gl:{hw:true,sc:"Latn"},gmy:{sc:"Linb"},gn:{hw:true},got:{sc:"Goth"},grc:{g:"mfn",p:true,sc:"Grek",wsc:"polytonic"},gu:{hw:true,sc:"Gujr"},gv:{hw:true},ha:{hw:true},har:{sc:"Ethi"},he:{alt:true,g:"mf",hw:true,p:true,sc:"Hebr"},hi:{g:"mf",hw:true,p:true,sc:"Deva"},hit:{sc:"Xsux"},hr:{alt:true,g:"mfn",hw:true,p:true,sc:"Latn"},hsb:{hw:true},hu:{alt:false,g:"",hw:true,p:true,sc:"Latn"},hy:{alt:false,g:"",hw:true,sc:"Armn"},ia:{alt:false,g:"",hw:true,sc:"Latn"},id:{hw:true,sc:"Latn"},ie:{alt:false,g:"",hw:true,sc:"Latn"},ik:{hw:true},ims:{sc:"Ital"},io:{hw:true},is:{alt:false,g:"mfn",hw:true,p:true,sc:"Latn"},it:{alt:false,g:"mf",hw:true,p:true,sc:"Latn"},iu:{hw:true},ja:{alt:false,g:"",hw:true,p:false,sc:"Jpan"},jbo:{hw:true,sc:"Latn"},jv:{hw:true},ka:{alt:false,g:"",hw:true,sc:"Geor"},kjh:{sc:"Cyrl"},kk:{alt:false,g:"",hw:true,sc:"Cyrl"},kl:{hw:true},km:{hw:true,sc:"Khmr"},kn:{hw:true,sc:"Knda"},ko:{alt:false,g:"",hw:true,p:false,sc:"Kore"},ks:{hw:true,sc:["Arab","Deva"],wsc:"ks-Arab"},ku:{hw:true,sc:"Arab",wsc:"ku-Arab"},kw:{hw:true},ky:{alt:false,g:"",hw:true,sc:"Cyrl"},la:{alt:true,g:"mfn",hw:true,p:true,sc:"Latn"},lb:{hw:true},lez:{sc:"Cyrl"},li:{hw:true},ln:{hw:true},lo:{alt:false,g:"",hw:true,p:false,sc:"Laoo"},lt:{alt:true,g:"mf",hw:true,p:true,sc:"Latn"},lv:{alt:false,g:"mf",hw:true,p:true,sc:"Latn"},mg:{hw:true},mh:{hw:true},mi:{alt:false,g:0,hw:true,sc:"Latn"},mk:{hw:true,sc:"Cyrl"},ml:{g:"",hw:true,sc:"Mlym"},mn:{alt:false,g:"",hw:true,sc:["Cyrl","Mong"]},mo:{hw:true,sc:"Cyrl"},mol:{sc:"Cyrl"},mr:{g:"mfn",hw:true,sc:"Deva"},ms:{hw:true},mt:{g:"mf",hw:true,sc:"Latn"},my:{hw:true,sc:"Mymr"},na:{hw:true},nah:{hw:true},nds:{hw:true},ne:{hw:true,sc:"Deva"},nl:{alt:false,g:"mfn",hw:true,p:true,sc:"Latn"},nn:{alt:false,g:"mfn",hw:true,p:true,sc:"Latn"},no:{alt:false,g:"mfn",hw:true,p:true,sc:"Latn"},oc:{hw:true},om:{hw:true},or:{hw:true,sc:"Orya"},os:{alt:false,g:"",sc:"Cyrl"},osc:{sc:"Ital"},ota:{sc:"Arab",wsc:"ota-Arab"},pa:{g:"mf",hw:true,p:true,sc:["Guru","Arab"]},peo:{sc:"Xpeo"},phn:{sc:"Phnx"},pi:{hw:true},pjt:{sc:"Latn"},pl:{g:"mfn",hw:true,p:true,sc:"Latn"},ps:{hw:true,sc:"Arab",wsc:"ps-Arab"},pt:{alt:false,g:"mf",hw:true,p:true,sc:"Latn"},qu:{hw:true},rm:{hw:true},rn:{hw:true},ro:{g:"mfn",hw:true,p:true,sc:"Latn"},"roa-rup":{hw:true},ru:{alt:true,g:"mfn",hw:true,p:true,sc:"Cyrl"},rw:{hw:true,sc:"Latn"},sa:{g:"mfn",hw:true,p:true,sc:"Deva"},sc:{hw:true},scn:{hw:true},sd:{hw:true,sc:"Arab",wsc:"sd-Arab"},sg:{hw:true},sh:{hw:true},si:{hw:true,sc:"Sinh"},simple:{hw:true,sc:"Latn"},sk:{g:"mfn",hw:true,p:true,sc:"Latn"},sl:{g:"mfn",hw:true,p:true,sc:"Latn"},sm:{hw:true},sn:{hw:true},so:{hw:true},spx:{sc:"Ital"},sq:{alt:false,g:"mf",hw:true,sc:"Latn"},sr:{g:"mfn",hw:true,p:true,sc:["Cyrl","Latn"]},ss:{hw:true},st:{hw:true},su:{hw:true},sux:{sc:"Xsux"},sv:{alt:false,g:"nc",hw:true,p:true,sc:"Latn"},sw:{alt:false,g:"",hw:true,sc:"Latn"},syr:{sc:"Syrc"},ta:{alt:false,g:"",hw:true,sc:"Taml"},te:{alt:false,g:"",hw:true,sc:"Telu"},tg:{alt:false,g:"",hw:true,sc:"Cyrl"},th:{alt:false,g:"",hw:true,p:false,sc:"Thai"},ti:{hw:true,sc:"Ethi"},tig:{sc:"Ethi"},tk:{alt:false,g:"",hw:true,sc:"Latn"},tl:{g:"",hw:true,p:false,sc:["Latn","Tglg"]},tmr:{sc:"Hebr"},tn:{hw:true},to:{hw:true},tokipona:{hw:true},tpi:{hw:true,sc:"Latn"},tr:{alt:true,g:"",hw:true,p:true,sc:"Latn"},ts:{hw:true},tt:{alt:false,g:"",hw:true,sc:"Cyrl"},tw:{hw:true},ug:{hw:true,sc:"Arab",wsc:"ug-Arab"},uga:{sc:"Ugar"},uk:{g:"mfn",hw:true,p:true,sc:"Cyrl"},ur:{g:"mf",hw:true,p:true,sc:"Arab",wsc:"ur-Arab"},uz:{alt:false,g:"",hw:true,sc:"Latn"},vi:{g:"",hw:true,p:false,sc:"Latn"},vo:{hw:true},wa:{hw:true},wo:{hw:true},xae:{sc:"Ital"},xcr:{sc:"Cari"},xfa:{sc:"Ital"},xh:{hw:true},xlc:{sc:"Lyci"},xld:{sc:"Lydi"},xlu:{sc:"Xsux"},xrr:{sc:"Ital"},xst:{sc:"Ethi"},xum:{sc:"Ital"},xve:{sc:"Ital"},xvo:{sc:"Ital"},yi:{g:"mfn",hw:true,p:true,sc:"Hebr",wsc:"yi-Hebr"},yo:{hw:true},yua:{alt:true,p:true,sc:"Latn"},za:{hw:true},zh:{g:"",hw:true,p:false,sc:"Hani"},"zh-classical":{sc:"Hant"},"zh-min-nan":{hw:true,sc:"Latn"},"zh-yue":{sc:"Hani"},zu:{hw:true,sc:"Latn"}};

    //The language code is necessary in case someone has just added a translation into "Norwegian" and wants to add a "Nynorsk" translation
    //as the wikitext will contain Norwegian: not Norwegian:. This does not support linking of the headings, it may not need to.
    // FIXME: This is all wrong.... 
    var nesting = {nn: ['Norwegian', 'no'], nb: ['Norwegian', 'no'], dsb: ['Sorbian',null], hsb: ['Sorbian',null], ang:['English','en'], enm: ['English','en']}

    var altForm = {
        ang: {from:"ĀāǢǣĊċĒēĠġĪīŌōŪūȲȳ", to:"AaÆæCcEeGgIiOoUuYy", strip:"\u0304\u0307"}, //macron and above dot
        ar: {strip:"\u064B\u064C\u064D\u064E\u064F\u0650\u0651\u0652"},
        he: {strip:"\u05B0\u05B1\u05B2\u05B3\u05B4\u05B5\u05B6\u05B7\u05B8\u05B9\u05BA\u05BB\u05BC\u05BD\u05BF\u05C1\u05C2"},
        hr: {from:"ȀȁÀàȂȃÁáĀāȄȅÈèȆȇÉéĒēȈȉÌìȊȋÍíĪīȌȍÒòȎȏÓóŌōȐȑȒȓŔŕȔȕÙùȖȗÚúŪū",
             to:"AaAaAaAaAaEeEeEeEeEeIiIiIiIiIiOoOoOoOoOoRrRrRrUuUuUuUuUu",
             strip:"\u030F\u0300\u0311\u0301\u0304"},
        la: {from:"ĀāĒēĪīŌōŪū", to:"AaEeIiOoUu",strip:"\u0304"}, //macron
        lt: {from:"áãàéẽèìýỹñóõòúù", to:"aaaeeeiyynooouu", strip:"\u0340\u0301\u0303"},
        sh: {from:"ȀȁÀàȂȃÁáĀāȄȅÈèȆȇÉéĒēȈȉÌìȊȋÍíĪīȌȍÒòȎȏÓóŌōȐȑȒȓŔŕȔȕÙùȖȗÚúŪū",
             to:"AaAaAaAaAaEeEeEeEeEeIiIiIiIiIiOoOoOoOoOoRrRrRrUuUuUuUuUu",
             strip:"\u030F\u0300\u0311\u0301\u0304"},
        sr: {from:"ȀȁÀàȂȃÁáĀāȄȅÈèȆȇÉéĒēȈȉÌìȊȋÍíĪīȌȍÒòȎȏÓóŌōȐȑȒȓŔŕȔȕÙùȖȗÚúŪū",
             to:"AaAaAaAaAaEeEeEeEeEeIiIiIiIiIiOoOoOoOoOoRrRrRrUuUuUuUuUu",
             strip:"\u030F\u0300\u0311\u0301\u0304"},
        tr: {from:"ÂâÛû", to:"AaUu",strip:"\u0302"}
    }; 
    //Returns true if the specified lang.wiktionary exists according to the meta list
    this.hasWiktionary = function(lang)
    {
        if (metadata[lang])
            return metadata[lang].hw;
    }

    //Given a language code return a default script code.
    this.guessScript = function(lang)
    {
        if (metadata[lang]) {
            // enwikt language template? (ur-Arab, polytonic)
            if (metadata[lang].wsc) {
                return metadata[lang].wsc;
            }
            // ISO script code? (Arab, Grek)
            if (metadata[lang].sc) {
                if (typeof metadata[lang].sc == 'object')
                    return metadata[lang].sc[0];
                else
                    return metadata[lang].sc;
            }
        }

        return false;
    }

    //Returns a string of standard gender letters (mfnc) or an empty string
    this.getGenders = function(lang)
    {
        if (metadata[lang])
            return metadata[lang].g;
    }

    //Returns true if the specified lang has the concept of plural nouns
    this.hasPlural = function(lang)
    {
        if (metadata[lang])
            return metadata[lang].p;
    }

    //Returns true if the specified lang uses optional vowels or diacritics
    this.needsAlt = function(lang)
    {
        if (metadata[lang])
            return metadata[lang].alt && (!altForm[lang]);
    }

//    this.nestedUnder = function (lang)
//    {
//        if (nesting[lang])
//            return nesting[lang];
//    }

    this.generateAltForm = function (lang, word)
    {
        //FIXME: use a dictionary and iterate along the string.
        // this is horrendously slow and horrid.
        if (altForm[lang])
        {
            var alt = altForm[lang];

            var map = {};

            if (alt.from && alt.to)
            {
                for (var i = 0; i < alt.from.length; i++)
                {
                    map[alt.from.charAt(i)] = alt.to.charAt(i);
                }
            }
            if (alt.strip)
            {
                for (var i = 0; i < alt.strip.length; i++)
                {
                    map[alt.strip.charAt(i)] = "";
                }
            }

            var input = word.split("");
            var output = "";

            for (var i = 0; i < input.length; i++)
            {
                var repl = map[input[i]];
                output += (repl == null) ? input[i] : repl;
            }
            return output;
        }
    }
}

$(function () {

    var prefs = new Preferences('EditorJs');

    if (prefs.get('enabled', 'true') == 'true')
    {
        if (! window.loadedEditor)
        {
            window.loadedEditor = true;
            var editor = new Editor();
            TranslationAdders(editor);
            TranslationBalancers(editor);
        }
    }

    // The enable-disable button on WT:EDIT
    var node = document.getElementById('editor-js-disable-button');

    if (node)
    {
        node.innerHTML = "";
        var toggle = newNode('span', {click: function ()
        {
            if (prefs.get('enabled', 'true') == 'true')
            {
                toggle.innerHTML = "Enable";
                prefs.set('enabled', 'false');
            }
            else
            {
                toggle.innerHTML = "Disable";
                prefs.set('enabled', 'true');
            }

        } }, (prefs.get('enabled', 'true') == 'true' ? 'Disable' : 'Enable'))

        node.appendChild(toggle);
    }
})