/*
[Discuz!] (C)2001-2007 Comsenz Inc.
This is NOT a freeware, use is subject to license terms

$RCSfile: editor.js,v $
$Revision: 1.55 $
$Date: 2007/07/23 12:34:55 $
*/

var editbox = editwin = editdoc = editcss = null;
var cursor = -1;
var stack = new Array();
var initialized = false;

//newEditor(wysiwyg);

function newEditor(mode, initialtext) {

    wysiwyg = parseInt(mode);
    if (!(is_ie || is_moz || (is_opera >= 9))) {
        allowswitcheditor = wysiwyg = 0;
    }
    var bbcodemode = F$('bbcodemode');
    var wysiwygmode = F$('wysiwygmode');
    bbcodemode.className = wysiwyg ? 'editor_switcher' : 'editor_switcher_highlight';
    wysiwygmode.className = wysiwyg ? 'editor_switcher_highlight' : 'editor_switcher';
    if (!allowswitcheditor) {
        F$(editorid + '_switcher').style.display = 'none';
    }

    F$(editorid + '_popup_table').style.display = wysiwyg ? '' : 'none';

    if (wysiwyg) {
        if (F$(editorid + '_iframe')) {
            editbox = F$(editorid + '_iframe');
        } else {
            var iframe = document.createElement('iframe');
            editbox = textobj.parentNode.appendChild(iframe);
            editbox.id = editorid + '_iframe';
        }

        editwin = editbox.contentWindow;
        editdoc = editwin.document;
        writeEditorContents(isUndefined(initialtext) ? bbcode2html(textobj.value) : initialtext);
    } else {
        editbox = editwin = editdoc = textobj;
        if (!isUndefined(initialtext)) {
            writeEditorContents(initialtext);
        }
        addSnapshot(textobj.value);
    }
    setEditorEvents();
    initEditor();
}

function initEditor() {
    var buttons = F$(editorid + '_controls').getElementsByTagName('a');
    for (var i = 0; i < buttons.length; i++) {
        if (buttons[i].id.indexOf(editorid + '_cmd_') != -1) {
            buttons[i].href = '###';
            buttons[i].onclick = function(e) { discuzcode(this.id.substr(this.id.lastIndexOf('_cmd_') + 5)) };
        } else if (buttons[i].id.indexOf(editorid + '_popup_') != -1) {
            buttons[i].href = '###';
            buttons[i].onclick = function(e) { showMenu(this.id, true, 0, 3) };
        }
    }
    setUnselectable(F$(editorid + '_controls'));
    textobj.onselect = textobj.onclick = textobj.onkeyup = function(e) { storeCaret(this) };
    textobj.onkeydown = function(e) { ctlent(e ? e : event) };
    F$('validatecode').onkeydown = function(e) { ctlent(e ? e : event) };
    F$('bbcodemode').onclick = function() { switchEditor(0) };
    //addEvent(F$('bbcodemode'),"click",switchEditor(0));
    F$('wysiwygmode').onclick = function() { switchEditor(1) };
    //addEvent(F$('wysiwygmode'), "click", switchEditor(1));
    //$(F$('bbcodemode')).click(function() {
    //    switchEditor(0);
    //});
    //$(F$('wysiwygmode')).click(function() {
    //    switchEditor(1);
    //});
    F$(editorid + '_buttonctrl').href = '###';
    F$(editorid + '_buttonctrl').onclick = function() { advanceeditor() };
}

function setUnselectable(obj) {
    if (is_ie && is_ie > 4 && typeof obj.tagName != 'undefined') {
        if (obj.hasChildNodes()) {
            for (var i = 0; i < obj.childNodes.length; i++) {
                setUnselectable(obj.childNodes[i]);
            }
        }
        obj.unselectable = 'on';
    }
}

function writeEditorContents(text) {
    if (wysiwyg) {
        if (text == '' && is_moz) {
            text = '<br />';
        }
        if (initialized && !(is_moz && is_moz >= 3)) {
            editdoc.body.innerHTML = text;
        } else {
            editdoc.designMode = 'on';
            editdoc = editwin.document;
            editdoc.open('text/html', 'replace');
            editdoc.write(text);
            editdoc.close();
            editdoc.body.contentEditable = true;
            initialized = true;
        }
    } else {
        textobj.value = text;
    }

    setEditorStyle();

}

function getEditorContents() {
    return wysiwyg ? editdoc.body.innerHTML : editdoc.value;
}

function setEditorStyle() {
    if (wysiwyg) {
        textobj.style.display = 'none';
        editbox.style.display = '';
        editbox.className = textobj.className;

        var headNode = editdoc.getElementsByTagName("head")[0];
        if (!headNode.getElementsByTagName('link').length) {
            editcss = editdoc.createElement('link');
            editcss.type = 'text/css';
            editcss.rel = 'stylesheet';
            editcss.href = editorcss;
            headNode.appendChild(editcss);
        }

        if (is_moz || is_opera) {
            editbox.style.border = '0px';
        } else if (is_ie) {
            editdoc.body.style.border = '0px';
            try {
                editdoc.body.addBehavior('#default#userData');
            } catch (e) { }
        }
        editbox.style.width = textobj.style.width;
        editbox.style.height = textobj.style.height;
        editdoc.body.style.background = '';
        editdoc.body.style.textAlign = 'left';
        editdoc.body.id = 'wysiwyg';
        //if (is_ie) {
            //try { F$('title').focus(); } catch (e) { editwin.focus(); }
        //}

    } else {
        var iframe = textobj.parentNode.getElementsByTagName('iframe')[0];
        if (iframe) {
            textobj.style.display = '';
            textobj.style.width = iframe.style.width;
            textobj.style.height = iframe.style.height;
            iframe.style.display = 'none';
        }
        if (is_ie) {
            try { F$('title').focus(); } catch (e) { textobj.focus(); }
        }
    }
}

function setEditorEvents() {
    if (wysiwyg) {
        if (is_moz || is_opera) {
            //editdoc.addEventListener('mouseup', function(e) {setContext();}, true);
            //editdoc.addEventListener('keyup', function(e) {setContext();}, true);
            editwin.addEventListener('focus', function(e) { this.hasfocus = true; }, true);
            editwin.addEventListener('blur', function(e) { this.hasfocus = false; }, true);
            editwin.addEventListener('keydown', function(e) { ctlent(e); }, true);
        } else {
            //editdoc.onmouseup = function(e) {setContext();};
            //editdoc.onkeyup = function(e) {setContext();};
            if (editdoc.attachEvent) {
                editdoc.body.attachEvent("onkeydown", ctlent);
                editdoc.body.attachEvent("onkeydown", ctltab);
            }
        }
    }
    editwin.onfocus = function(e) { this.hasfocus = true; };
    editwin.onblur = function(e) { this.hasfocus = false; };
}

function wrapTags(tagname, useoption, selection) {

    if (isUndefined(selection)) {
        var selection = getSel();
        if (selection === false) {
            selection = '';
        } else {
            selection += '';
        }
    }


    var sel;
    if (is_ie) {
        sel = wysiwyg ? editdoc.selection.createRange() : document.selection.createRange();
        var pos = getCaret();
    }

    if (useoption !== false) {
        var opentag = '[' + tagname + '=' + useoption + ']';
    } else {
        var opentag = '[' + tagname + ']';
    }
    var closetag = '[/' + tagname + ']';
    var text = opentag + selection + closetag;
    if (selection == '' && in_array(tagname, ['code', 'quote', 'free', 'hide'])) {
        if (is_ie) {
            var pos = getCaret();
        }
        var ctrlid = editorid + '_cmd_' + tagname;
        var str = lang['post_discuzcode_' + tagname] + ':<br /><textarea id="' + ctrlid + '_content' + '" cols="50" rows="5"></textarea><br />';
        var div = editorMenu(ctrlid, str);
        F$(ctrlid + '_content').focus();
        F$(ctrlid + '_submit').onclick = function() {
            checkFocus();
            if (is_ie) {
                setCaret(pos);
            }
            selection = wysiwyg ? F$(ctrlid + '_content').value.replace(/\r?\n/g, '<br />') : F$(ctrlid + '_content').value;
            text = opentag + selection + closetag;
            insertText(text, strlen(opentag), strlen(closetag), false);
            hideMenu();
            document.body.removeChild(div);
        }
        return;
    }

    insertText(text, strlen(opentag), strlen(closetag), in_array(tagname, ['code', 'quote', 'free', 'hide']) ? true : false, sel);

}

function applyFormat(cmd, dialog, argument) {

    if (wysiwyg) {
        editdoc.execCommand(cmd, (isUndefined(dialog) ? false : dialog), (isUndefined(argument) ? true : argument));
        return;
    }
    switch (cmd) {
        case 'bold':
        case 'italic':
        case 'underline':
            wrapTags(cmd.substr(0, 1), false);
            break;
        case 'justifyleft':
        case 'justifycenter':
        case 'justifyright':
            wrapTags('align', cmd.substr(7));
            break;
        case 'floatleft':
        case 'floatright':
            wrapTags('float', cmd.substr(5));
            break;
        case 'indent':
            wrapTags(cmd, false);
            break;
        case 'fontname':
            wrapTags('font', argument);
            break;
        case 'fontsize':
            wrapTags('size', argument);
            break;
        case 'forecolor':
            wrapTags('color', argument);
            break;
        case 'createlink':
            var sel = getSel();
            if (sel) {
                wrapTags('url', argument);
            } else {
                wrapTags('url', argument, argument);
            }
            break;
        case 'insertimage':
            wrapTags('img', false, argument);
            break;
    }
}

function getCaret() {

    if (wysiwyg) {
        var obj = editdoc.body;

        var s = document.selection.createRange();
        s.setEndPoint("StartToStart", obj.createTextRange());

        return s.text.replace(/\r?\n/g, ' ').length;
    } else {
        var obj = editbox;
        var wR = document.selection.createRange();
        obj.select();
        var aR = document.selection.createRange();
        wR.setEndPoint("StartToStart", aR);
        var len = wR.text.replace(/\r?\n/g, ' ').length;
        wR.collapse(false);
        wR.select();
        return len;
    }
}

function setCaret(pos) {
    var obj = wysiwyg ? editdoc.body : editbox;
    var r = obj.createTextRange();
    r.moveStart('character', pos);
    r.collapse(true);
    r.select();
}

function insertlink(cmd) {
    var sel;
    if (is_ie) {
        sel = wysiwyg ? editdoc.selection.createRange() : document.selection.createRange();
        var pos = getCaret();
    }
    var selection = sel ? (wysiwyg ? sel.htmlText : sel.text) : getSel();
    var ctrlid = editorid + '_cmd_' + cmd;
    var tag = cmd == 'insertimage' ? 'img' : (cmd == 'createlink' ? 'url' : 'email');
    var str = (tag == 'img' ? lang['enter_image_url'] : (tag == 'url' ? lang['enter_link_url'] : lang['enter_email_link'])) + '<br /><input type="text" id="' + ctrlid + '_param_1" size="50" value="">';
    var div = editorMenu(ctrlid, str);
    F$(ctrlid + '_param_1').focus();
    F$(ctrlid + '_param_1').onkeydown = editorMenuEvent_onkeydown;
    F$(ctrlid + '_submit').onclick = function() {
        checkFocus();
        if (is_ie) {
            setCaret(pos);
        }
        var input = F$(ctrlid + '_param_1').value;

        if (input != '') {

            var v = selection ? selection : input;

            var href = tag != 'email' && /^(www\.)/.test(input) ? 'http://' + input : input;

            var text = wysiwyg ? (tag == 'img' ? '<img src="' + input + '" border="0">' : '<a href="' + (tag == 'email' ? 'mailto:' : '') + href + '">' + v + '</a>') : (tag == 'img' ? '[' + tag + ']' + input + '[/' + tag + ']' : '[' + tag + '=' + href + ']' + v + '[/' + tag + ']');

            var closetaglen = tag == 'email' ? 8 : 6;

            if (wysiwyg) insertText(text, text.length - v.length, 0, (selection ? true : false), sel);

            else insertText(text, text.length - v.length - closetaglen, closetaglen, (selection ? true : false), sel);

        }
        hideMenu();
        document.body.removeChild(div);
    }
}

function editorMenuEvent_onkeydown(e) {

    e = e ? e : event;

    var ctrlid = this.id.substr(0, this.id.lastIndexOf('_param_'));

    if ((this.type == 'text' && e.keyCode == 13) || (this.type == 'textarea' && e.ctrlKey && e.keyCode == 13)) {

        F$(ctrlid + '_submit').click();

        doane(e);

    } else if (e.keyCode == 27) {

        hideMenu();

        document.body.removeChild(F$(ctrlid + '_menu'));

    }

}

function customTags(tagname, params) {
    var sel;

    if (is_ie) {

        sel = wysiwyg ? editdoc.selection.createRange() : document.selection.createRange();

        var pos = getCaret();

    }
    var selection = sel ? (wysiwyg ? sel.htmlText : sel.text) : getSel();
    var opentag = '[' + tagname + ']';
    var closetag = '[/' + tagname + ']';
    var haveSel = selection == null || selection == false || in_array(trim(selection), ['', 'null', 'undefined', 'false']) ? 0 : 1;
    if (params == 1 && haveSel) {
        return insertText((opentag + selection + closetag), strlen(opentag), strlen(closetag), true, sel);
    }
    var ctrlid = editorid + '_cmd_custom' + params + '_' + tagname;
    var ordinal = { 1: 'first', 2: 'second', 3: 'third' }
    //var promptlang = custombbcodes[tagname]['prompt'].split("\t");
    var promptlang;
    try {
        promptlang = custombbcodes[tagname][3];
    }
    catch (e) {
        promptlang = custombbcodes[tagname]['prompt'].split("\t");
    }

    var defaultvalue = custombbcodes[tagname][4];

    var str = '';
    for (var i = 1; i <= params; i++) {
        if (i != 1 || !haveSel) {
            str += '<br />' + (promptlang[i - 1] ? promptlang[i - 1] : 'Please input the ' + ordinal[i] + ' parameter:') + '<br /><input type="text" id="' + ctrlid + '_param_' + i + '" size="50" value="' + (defaultvalue[i - 1] ? defaultvalue[i - 1] : '') + '"><br />';
        }
    }
    var div = editorMenu(ctrlid, str);
    if (F$(ctrlid + '_param_1')) {
        try {
            F$(ctrlid + '_param_1').focus();
        } catch (e) { }
    }
    for (var i = 1; i <= params; i++) { if (i != 1 || !haveSel) F$(ctrlid + '_param_' + i).onkeydown = editorMenuEvent_onkeydown; }
    F$(ctrlid + '_submit').onclick = function() {
        if (F$(ctrlid + '_param_1'))
            var first = F$(ctrlid + '_param_1').value;
        else
            var first = selection;
        if (F$(ctrlid + '_param_2'))
            var second = F$(ctrlid + '_param_2').value;
        if (F$(ctrlid + '_param_3'))
            var third = F$(ctrlid + '_param_3').value;
        checkFocus();
        if (is_ie) {
            setCaret(pos);
        }
        if ((params == 1 && first) || (params == 2 && first && (haveSel || second)) || (params == 3 && first && second && (haveSel || third))) {
            var text;
            if (params == 1) {
                text = first;
            } else if (params == 2) {
                //text = haveSel ? selection : second;
                text = haveSel ? selection : first;
                //opentag = '[' + tagname + '=' + first + ']';
                opentag = '[' + tagname + '=' + second + ']';
            } else {
                //text = haveSel ? selection : third;
                //opentag = '[' + tagname + '=' + first + ',' + second + ']';
                text = haveSel ? selection : first;
                opentag = '[' + tagname + '=' + second + ',' + third + ']';
            }
            insertText((opentag + text + closetag), strlen(opentag), strlen(closetag), true, sel);
        }
        hideMenu();
        div.parentNode.removeChild(div);
    };
}

function editorMenu(ctrlid, str) {
    var div = document.createElement('div');
    div.id = ctrlid + '_menu';
    div.style.display = 'none';
    div.className = 'popupmenu_popup';
    document.body.appendChild(div);
    div.innerHTML = '<div class="popupmenu_option" unselectable="on">' + str + '<br /><center><input type="button" id="' + ctrlid + '_submit" value="' + lang['submit'] + '" /> &nbsp; <input type="button" onClick="hideMenu();try{F$(\'' + div.id + '\').parentNode.removeChild(F$(\'' + div.id + '\'))}catch(e){}" value="' + lang['cancel'] + '" /></center><br /></div>';
    showMenu(ctrlid, true, 0, 3);
    return div;
}

function discuzcode(cmd, arg) {
    if (cmd != 'redo') {
        addSnapshot(getEditorContents());
    }

    checkFocus();
    if (in_array(cmd, ['quote', 'code', 'free', 'hide'])) {
        var ret = wrapTags(cmd, false);
    } else if (cmd.substr(0, 6) == 'custom') {
        var ret = customTags(cmd.substr(8), cmd.substr(6, 1));
    } else if (!wysiwyg && cmd == 'removeformat') {
        var simplestrip = new Array('b', 'i', 'u');
        var complexstrip = new Array('font', 'color', 'size');

        var str = getSel();
        if (str === false) {
            return;
        }
        for (var tag in simplestrip) {
            str = stripSimple(simplestrip[tag], str);
        }
        for (var tag in complexstrip) {
            str = stripComplex(complexstrip[tag], str);
        }
        insertText(str);
    } else if (!wysiwyg && cmd == 'undo') {
        addSnapshot(getEditorContents());
        moveCursor(-1);
        if ((str = getSnapshot()) !== false) {
            editdoc.value = str;
        }
    } else if (!wysiwyg && cmd == 'redo') {
        moveCursor(1);
        if ((str = getSnapshot()) !== false) {
            editdoc.value = str;
        }
    } else if (!wysiwyg && in_array(cmd, ['insertorderedlist', 'insertunorderedlist'])) {
        var listtype = cmd == 'insertorderedlist' ? '1' : '';
        var opentag = '[list' + (listtype ? ('=' + listtype) : '') + ']\n';
        var closetag = '[/list]';

        if (txt = getSel()) {
            var regex = new RegExp('([\r\n]+|^[\r\n]*)(?!\\[\\*\\]|\\[\\/?list)(?=[^\r\n])', 'gi');
            txt = opentag + trim(txt).replace(regex, '$1[*]') + '\n' + closetag;
            insertText(txt, strlen(txt), 0);
        } else {
            insertText(opentag + closetag, opentag.length, closetag.length);

            while (listvalue = prompt(lang['enter_list_item'], '')) {
                if (is_opera > 8) {
                    listvalue = '\n' + '[*]' + listvalue;
                    insertText(listvalue, strlen(listvalue) + 1, 0);
                } else {
                    listvalue = '[*]' + listvalue + '\n';
                    insertText(listvalue, strlen(listvalue), 0);
                }
            }
        }
    } else if (!wysiwyg && cmd == 'outdent') {
        var sel = getSel();
        sel = stripSimple('indent', sel, 1);
        insertText(sel);
    } else if (cmd == 'createlink') {
        insertlink('createlink');
    } else if (!wysiwyg && cmd == 'unlink') {
        var sel = getSel();
        sel = stripSimple('url', sel);
        sel = stripComplex('url', sel);
        insertText(sel);
    } else if (cmd == 'email') {
        insertlink('email');
    } else if (cmd == 'insertimage') {
        insertlink('insertimage');
    } else if (cmd == 'table') {
        if (wysiwyg) {
            var rows = F$(editorid + '_table_rows').value;
            var columns = F$(editorid + '_table_columns').value;
            var width = F$(editorid + '_table_width').value;
            var bgcolor = F$(editorid + '_table_bgcolor').value;
            rows = /^[-\+]?\d+$/.test(rows) && rows > 0 && rows <= 30 ? rows : 2;
            columns = /^[-\+]?\d+$/.test(columns) && columns > 0 && columns <= 30 ? columns : 2;
            width = width.substr(width.length - 1, width.length) == '%' ? (width.substr(0, width.length - 1) <= 98 ? width : '98%') : (width <= 560 ? width : '98%');
            bgcolor = /[\(\)%,#\w]+/.test(bgcolor) ? bgcolor : '';
            var html = '<table cellspacing="0" cellpadding="0" width="' + (width ? width : '50%') + '" class="t_table"' + (bgcolor ? ' bgcolor="' + bgcolor + '"' : '') + '>';
            for (var row = 0; row < rows; row++) {
                html += '<tr>\n';
                for (col = 0; col < columns; col++) {
                    html += '<td>&nbsp;</td>\n';
                }
                html += '</tr>\n';
            }
            html += '</table>\n';
            insertText(html);
            hideMenu();
        }
        return false;
    } else if (cmd == 'floatleft' || cmd == 'floatright') {
        if (wysiwyg) {
            var selection = getSel();
            if (selection) {
                insertText('<br style="clear: both"><span style="float: ' + cmd.substr(5) + '">' + selection + '</span>', true);
            }
        } else {
            return applyFormat(cmd, false);
        }
    } else {
        try {
            var ret = applyFormat(cmd, false, (isUndefined(arg) ? true : arg));
        } catch (e) {
            var ret = false;
        }
    }

    if (cmd != 'undo') {
        addSnapshot(getEditorContents());
    }
    if (wysiwyg) {
        setContext(cmd);
        if (cmd == 'forecolor') {
            F$(editorid + '_color_bar').style.backgroundColor = arg;
        }
    }
    //checkFocus();
    return ret;
}

function setContext(cmd) {
    var contextcontrols = new Array('bold', 'italic', 'underline', 'justifyleft', 'justifycenter', 'justifyright', 'insertorderedlist', 'insertunorderedlist');
    for (var i in contextcontrols) {
        var obj = F$(editorid + '_cmd_' + contextcontrols[i]);
        if (obj != null) {
            try {
                var state = editdoc.queryCommandState(contextcontrols[i]);
            } catch (e) {
                var state = false;
            }
            if (isUndefined(obj.state)) {
                obj.state = false;
            }
            if (obj.state != state) {
                obj.state = state;
                buttonContext(obj, (obj.id.substr(obj.id.indexOf('_cmd_') + 5) == cmd ? 'mouseover' : 'mouseout'));
            }
        }
    }
    try {
        var fs = editdoc.queryCommandValue('fontname');
        //var fs = F$("posteditor_font_out").innerText();
        if (fs == 'Times New Roman') fs = '宋体';
        if (fs == '' && !is_ie && window.getComputedStyle) {
            fs = editdoc.body.style.fontFamily;
        } else if (fs == null) {
            fs = '';
        }
        if (fs != F$(editorid + '_font_out').fontstate) {
            thingy = fs.indexOf(',') > 0 ? fs.substr(0, fs.indexOf(',')) : fs;
            F$(editorid + '_font_out').innerHTML = thingy;
            F$(editorid + '_font_out').fontstate = fs;
        }

        var ss = editdoc.queryCommandValue('fontsize');
        if (ss == null || ss == '') {
            ss = formatFontsize(editdoc.body.style.fontSize);
        }
        if (ss != F$(editorid + '_size_out').sizestate) {
            if (F$(editorid + '_size_out').sizestate == null) {
                F$(editorid + '_size_out').sizestate = '';
            }
            F$(editorid + '_size_out').innerHTML = ss;
            F$(editorid + '_size_out').sizestate = ss;
        }

        var cs = editdoc.queryCommandValue('forecolor');
        F$(editorid + '_color_bar').style.backgroundColor = rgbToColor(cs);
    }
    catch (firefox3bug) {
    }
}

function buttonContext(obj, state) {
    if (state == 'mouseover') {
        obj.style.cursor = 'pointer';
        var mode = obj.state ? 'down' : 'hover';
        if (obj.mode != mode) {
            obj.mode = mode;
            obj.className = 'hover';
        }
    } else {
        var mode = obj.state ? 'selected' : 'normal';
        if (obj.mode != mode) {
            obj.mode = mode;
            obj.className = mode == 'selected' ? 'hover' : '';
        }
    }
}

function menuContext(obj, state) {
    obj.style.cursor = 'pointer';
    var mode = state == 'mouseover' ? 'hover' : 'normal';
    obj.className = 'editor_button' + mode;
    var tds = obj.getElementsByTagName('td');
    for (var i = 0; i < tds.length; i++) {
        if (tds[i].id.substr(0, tds[i].id.lastIndexOf('_')) == editorid + '_menu') {
            tds[i].className = 'editor_menu' + mode;
        } else if (tds[i].id == editorid + '_colormenu') {
            tds[i].className = 'editor_colormenu' + mode;
        }
    }
}

function colorContext(obj, state) {
    obj.style.cursor = 'pointer';
    var mode = state == 'mouseover' ? 'hover' : 'normal';
    obj.className = 'editor_color' + mode;
}

function getSel() {
    if (wysiwyg) {
        if (is_moz || is_opera) {
            selection = editwin.getSelection();
            checkFocus();
            range = selection ? selection.getRangeAt(0) : editdoc.createRange();
            return readNodes(range.cloneContents(), false);
        } else {
            var range = editdoc.selection.createRange();
            if (range.htmlText && range.text) {
                return range.htmlText;
            } else {
                var htmltext = '';
                for (var i = 0; i < range.length; i++) {
                    htmltext += range.item(i).outerHTML;
                }
                return htmltext;
            }
        }
    } else {
        if (!isUndefined(editdoc.selectionStart)) {
            return editdoc.value.substr(editdoc.selectionStart, editdoc.selectionEnd - editdoc.selectionStart);
        } else if (document.selection && document.selection.createRange) {
            return document.selection.createRange().text;
        } else if (window.getSelection) {
            return window.getSelection() + '';
        } else {
            return false;
        }
    }
}

function insertText(text, movestart, moveend, select, sel) {
    if (wysiwyg) {
        if (is_moz || is_opera) {
            applyFormat('removeformat');
            var fragment = editdoc.createDocumentFragment();
            var holder = editdoc.createElement('span');
            holder.innerHTML = text;

            while (holder.firstChild) {
                fragment.appendChild(holder.firstChild);
            }
            insertNodeAtSelection(fragment);
        } else {
            checkFocus();
            if (!isUndefined(editdoc.selection) && editdoc.selection.type != 'Text' && editdoc.selection.type != 'None') {
                movestart = false;
                editdoc.selection.clear();
            }

            if (isUndefined(sel)) {
                sel = editdoc.selection.createRange();
            }

            sel.pasteHTML(text);

            if (text.indexOf('\n') == -1) {
                if (!isUndefined(movestart)) {
                    sel.moveStart('character', -strlen(text) + movestart);
                    sel.moveEnd('character', -moveend);
                } else if (movestart != false) {
                    sel.moveStart('character', -strlen(text));
                }
                if (!isUndefined(select) && select) {
                    sel.select();
                }
            }
        }
    } else {
        checkFocus();
        if (!isUndefined(editdoc.selectionStart)) {
            var opn = editdoc.selectionStart + 0;
            editdoc.value = editdoc.value.substr(0, editdoc.selectionStart) + text + editdoc.value.substr(editdoc.selectionEnd);

            if (!isUndefined(movestart)) {
                editdoc.selectionStart = opn + movestart;
                editdoc.selectionEnd = opn + strlen(text) - moveend;
            } else if (movestart !== false) {
                editdoc.selectionStart = opn;
                editdoc.selectionEnd = opn + strlen(text);
            }
        } else if (document.selection && document.selection.createRange) {
            if (isUndefined(sel)) {
                sel = document.selection.createRange();
            }
            sel.text = text.replace(/\r?\n/g, '\r\n');
            if (!isUndefined(movestart)) {
                sel.moveStart('character', -strlen(text) + movestart);
                sel.moveEnd('character', -moveend);
            } else if (movestart !== false) {
                sel.moveStart('character', -strlen(text));
            }
            sel.select();
        } else {
            editdoc.value += text;
        }
    }
}

function stripSimple(tag, str, iterations) {
    var opentag = '[' + tag + ']';
    var closetag = '[/' + tag + ']';

    if (isUndefined(iterations)) {
        iterations = -1;
    }
    while ((startindex = stripos(str, opentag)) !== false && iterations != 0) {
        iterations--;
        if ((stopindex = stripos(str, closetag)) !== false) {
            var text = str.substr(startindex + opentag.length, stopindex - startindex - opentag.length);
            str = str.substr(0, startindex) + text + str.substr(stopindex + closetag.length);
        } else {
            break;
        }
    }
    return str;
}

function stripComplex(tag, str, iterations) {
    var opentag = '[' + tag + '=';
    var closetag = '[/' + tag + ']';

    if (isUndefined(iterations)) {
        iterations = -1;
    }
    while ((startindex = stripos(str, opentag)) !== false && iterations != 0) {
        iterations--;
        if ((stopindex = stripos(str, closetag)) !== false) {
            var openend = stripos(str, ']', startindex);
            if (openend !== false && openend > startindex && openend < stopindex) {
                var text = str.substr(openend + 1, stopindex - openend - 1);
                str = str.substr(0, startindex) + text + str.substr(stopindex + closetag.length);
            } else {
                break;
            }
        } else {
            break;
        }
    }
    return str;
}

function stripos(haystack, needle, offset) {
    if (isUndefined(offset)) {
        offset = 0;
    }
    var index = haystack.toLowerCase().indexOf(needle.toLowerCase(), offset);

    return (index == -1 ? false : index);
}

function switchEditor(mode) {

    mode = parseInt(mode);
    if (mode == wysiwyg || !allowswitcheditor) {
        return;
    }
    if (!mode) {
        var controlbar = F$(editorid + '_controls');
        var controls = new Array();
        var buttons = controlbar.getElementsByTagName('a');
        var buttonslength = buttons.length;
        for (var i = 0; i < buttonslength; i++) {
            if (buttons[i].id) {
                controls[controls.length] = buttons[i].id;
            }
        }
        var controlslength = controls.length;
        for (var i = 0; i < controlslength; i++) {
            var control = F$(controls[i]);

            if (control.id.indexOf(editorid + '_cmd_') != -1) {
                control.className = '';
                control.state = false;
                control.mode = 'normal';
            } else if (control.id.indexOf(editorid + '_popup_') != -1) {
                control.state = false;
            }
        }
    }
    cursor = -1;
    stack = new Array();
    F$(editorid + '_font_out').innerHTML = lang['fontname'];
    F$(editorid + '_size_out').innerHTML = lang['fontsize'];
    F$(editorid + '_font_out').fontstate = null;
    F$(editorid + '_size_out').sizestate = null;
    F$(editorid + '_color_bar').style.backgroundColor = '#000000';
    var parsedtext = getEditorContents();
    parsedtext = mode ? bbcode2html(parsedtext) : html2bbcode(parsedtext);
    wysiwyg = mode;
    F$(editorid + '_mode').value = mode;

    newEditor(mode, parsedtext);
    editwin.focus();
    setCaretAtEnd();
}

function formatFontsize(csssize) {
    switch (csssize) {
        case '7.5pt':
        case '10px': return 1;
        case '10pt': return 2;
        case '12pt': return 3;
        case '14pt': return 4;
        case '18pt': return 5;
        case '24pt': return 6;
        case '36pt': return 7;
        default: return lang['fontsize'];
    }
}

function rgbToColor(forecolor) {
    if (!is_moz && !is_opera) {
        return rgbhexToColor((forecolor & 0xFF).toString(16), ((forecolor >> 8) & 0xFF).toString(16), ((forecolor >> 16) & 0xFF).toString(16));
    }
    if (forecolor == '' || forecolor == null) {
        forecolor = window.getComputedStyle(editdoc.body, null).getPropertyValue('color');
    }
    if (forecolor.toLowerCase().indexOf('rgb') == 0) {
        var matches = forecolor.match(/^rgb\s*\(([0-9]+),\s*([0-9]+),\s*([0-9]+)\)$/);
        if (matches) {
            return rgbhexToColor((matches[1] & 0xFF).toString(16), (matches[2] & 0xFF).toString(16), (matches[3] & 0xFF).toString(16));
        } else {
            return rgbToColor(null);
        }
    } else {
        return forecolor;
    }
}

function rgbhexToColor(r, g, b) {
    var coloroptions = { '#000000': 'Black', '#a0522d': 'Sienna', '#556b2f': 'DarkOliveGreen', '#006400': 'DarkGreen', '#483d8b': 'DarkSlateBlue', '#000080': 'Navy', '#4b0082': 'Indigo', '#2f4f4f': 'DarkSlateGray', '#8b0000': 'DarkRed', '#ff8c00': 'DarkOrange', '#808000': 'Olive', '#008000': 'Green', '#008080': 'Teal', '#0000ff': 'Blue', '#708090': 'SlateGray', '#696969': 'DimGray', '#ff0000': 'Red', '#f4a460': 'SandyBrown', '#9acd32': 'YellowGreen', '#2e8b57': 'SeaGreen', '#48d1cc': 'MediumTurquoise', '#4169e1': 'RoyalBlue', '#800080': 'Purple', '#808080': 'Gray', '#ff00ff': 'Magenta', '#ffa500': 'Orange', '#ffff00': 'Yellow', '#00ff00': 'Lime', '#00ffff': 'Cyan', '#00bfff': 'DeepSkyBlue', '#9932cc': 'DarkOrchid', '#c0c0c0': 'Silver', '#ffc0cb': 'Pink', '#f5deb3': 'Wheat', '#fffacd': 'LemonChiffon', '#98fb98': 'PaleGreen', '#afeeee': 'PaleTurquoise', '#add8e6': 'LightBlue', '#dda0dd': 'Plum', '#ffffff': 'White' };
    return coloroptions['#' + (str_pad(r, 2, 0) + str_pad(g, 2, 0) + str_pad(b, 2, 0))];
}

function str_pad(text, length, padstring) {
    text += '';
    padstring += '';

    if (text.length < length) {
        padtext = padstring;

        while (padtext.length < (length - text.length)) {
            padtext += padstring;
        }

        text = padtext.substr(0, (length - text.length)) + text;
    }

    return text;
}

function insertNodeAtSelection(text) {
    checkFocus();

    var sel = editwin.getSelection();
    var range = sel ? sel.getRangeAt(0) : editdoc.createRange();
    sel.removeAllRanges();
    range.deleteContents();

    var node = range.startContainer;
    var pos = range.startOffset;

    switch (node.nodeType) {
        case Node.ELEMENT_NODE:
            if (text.nodeType == Node.DOCUMENT_FRAGMENT_NODE) {
                selNode = text.firstChild;
            } else {
                selNode = text;
            }
            node.insertBefore(text, node.childNodes[pos]);
            add_range(selNode);
            break;

        case Node.TEXT_NODE:
            if (text.nodeType == Node.TEXT_NODE) {
                var text_length = pos + text.length;
                node.insertData(pos, text.data);
                range = editdoc.createRange();
                range.setEnd(node, text_length);
                range.setStart(node, text_length);
                sel.addRange(range);
            } else {
                node = node.splitText(pos);
                var selNode;
                if (text.nodeType == Node.DOCUMENT_FRAGMENT_NODE) {
                    selNode = text.firstChild;
                } else {
                    selNode = text;
                }
                node.parentNode.insertBefore(text, node);
                add_range(selNode);
            }
            break;
    }
}

function add_range(node) {
    checkFocus();
    var sel = editwin.getSelection();
    var range = editdoc.createRange();
    range.selectNodeContents(node);
    sel.removeAllRanges();
    sel.addRange(range);
}

function readNodes(root, toptag) {
    var html = "";
    var moz_check = /_moz/i;

    switch (root.nodeType) {
        case Node.ELEMENT_NODE:
        case Node.DOCUMENT_FRAGMENT_NODE:
            var closed;
            if (toptag) {
                closed = !root.hasChildNodes();
                html = '<' + root.tagName.toLowerCase();
                var attr = root.attributes;
                for (var i = 0; i < attr.length; ++i) {
                    var a = attr.item(i);
                    if (!a.specified || a.name.match(moz_check) || a.value.match(moz_check)) {
                        continue;
                    }
                    html += " " + a.name.toLowerCase() + '="' + a.value + '"';
                }
                html += closed ? " />" : ">";
            }
            for (var i = root.firstChild; i; i = i.nextSibling) {
                html += readNodes(i, true);
            }
            if (toptag && !closed) {
                html += "</" + root.tagName.toLowerCase() + ">";
            }
            break;

        case Node.TEXT_NODE:
            html = htmlspecialchars(root.data);
            break;
    }
    return html;
}

function moveCursor(increment) {
    var test = cursor + increment;
    if (test >= 0 && stack[test] != null && !isUndefined(stack[test])) {
        cursor += increment;
    }
}

function addSnapshot(str) {
    if (stack[cursor] == str) {
        return;
    } else {
        cursor++;
        stack[cursor] = str;

        if (!isUndefined(stack[cursor + 1])) {
            stack[cursor + 1] = null;
        }
    }
}

function getSnapshot() {
    if (!isUndefined(stack[cursor]) && stack[cursor] != null) {
        return stack[cursor];
    } else {
        return false;
    }
}

function advanceeditor() {
    if (F$(editorid + '_morebuttons').style.display == '') {
        F$(editorid + '_morebuttons').style.display = 'none';
        F$(editorid + '_left').style.display = 'none';
        F$(editorid + '_bottom').style.display = 'none';
        F$(editorid + '_buttonctrl').innerHTML = lang['post_advanceeditor'];
    } else {
        F$(editorid + '_morebuttons').style.display = '';
        F$(editorid + '_left').style.display = '';
        F$(editorid + '_bottom').style.display = '';
        F$(editorid + '_buttonctrl').innerHTML = lang['post_simpleeditor'];
    }
}