// bbCode control by
// subBlue design
// www.subBlue.com

// Startup variables
var imageTag = false;
var theSelection = false;

// Check for Browser & Platform for PC & IE specific bits
// More details from: http://www.mozilla.org/docs/web-developer/sniffer/browser_type.html
var clientPC = navigator.userAgent.toLowerCase(); // Get client info
var clientVer = parseInt(navigator.appVersion); // Get browser version

var is_ie = ((clientPC.indexOf("msie") != -1) && (clientPC.indexOf("opera") == -1));
var is_nav = ((clientPC.indexOf('mozilla')!=-1) && (clientPC.indexOf('spoofer')==-1)
 && (clientPC.indexOf('compatible') == -1) && (clientPC.indexOf('opera')==-1)
 && (clientPC.indexOf('webtv')==-1) && (clientPC.indexOf('hotjava')==-1));
var is_moz = 0;

var is_win = ((clientPC.indexOf("win")!=-1) || (clientPC.indexOf("16bit") != -1));
var is_mac = (clientPC.indexOf("mac")!=-1);

// Helpline messages
b_help = "Жирный текст: <strong>текст</strong> (alt+b)";
i_help = "Наклонный текст: <emphasize>текст</emphasize> (alt+i)";
u_help = "Подчёркнутый текст: <u>текст</u> (alt+u)";
q_help = "Цитата: <code>текст</code> (alt+q)";
c_help = "Код (программа): <literal>код</literal> (alt+c)";
l_help = "Список: <list>текст</list> (alt+l)";
o_help = "Нумерованный список: <list=>текст</list> (alt+o)";
p_help = "Вставить картинку: <img>http://image_url</img> (alt+p)";
w_help = "Вставить ссылку: <url>http://url</url> или <url=http://url>текст ссылки</url> (alt+w)";
a_help = "Закрыть все открытые теги bbCode";
s_help = "Цвет шрифта: <color=red>текст</color> Подсказка: можно использовать color=#FF0000";
f_help = "Размер шрифта: <size=x-small>маленький текст</size>";

// Define the bbCode tags
bbcode = new Array();
bbtags = new Array('<strong>','</strong>','<emphasize>',',</emphasize>','<u>','</u>','<code>','</code>','<literal>','</literal>','<list>','</list>','<list=>','</list>','<img>','</img>','<url>','</url>');
imageTag = false;

// Shows the help messages in the helpline window
function helpline(help) {
 document.post.helpbox.value = eval(help + "_help");
}


// Replacement for arrayname.length property
function getarraysize(thearray) {
 for (i = 0; i < thearray.length; i++) {
 if ((thearray[i] == "undefined") || (thearray[i] == "") || (thearray[i] == null))
 return i;
 }
 return thearray.length;
}

// Replacement for arrayname.push(value) not implemented in IE until version 5.5
// Appends element to the array
function arraypush(thearray,value) {
 thearray[ getarraysize(thearray) ] = value;
}

// Replacement for arrayname.pop() not implemented in IE until version 5.5
// Removes and returns the last element of an array
function arraypop(thearray) {
 thearraysize = getarraysize(thearray);
 retval = thearray[thearraysize - 1];
 delete thearray[thearraysize - 1];
 return retval;
}


function checkForm() {

 formErrors = false;

 if (document.post.message.value.length < 2) {
 formErrors = "Вы должны ввести текст сообщения";
 }

 if (formErrors) {
 alert(formErrors);
 return false;
 } else {
 bbstyle(-1);
 //formObj.preview.disabled = true;
 //formObj.submit.disabled = true;
 return true;
 }
}

function emoticon(text) {
 /*var txtarea = document.post.message;*/
 var txtarea = document.getElementById('message');
 text = ' ' + text + ' ';
 if (txtarea.createTextRange && txtarea.caretPos) {
 var caretPos = txtarea.caretPos;
 caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ? caretPos.text + text + ' ' : caretPos.text + text;
 txtarea.focus();
 } else {
 txtarea.value += text;
 txtarea.focus();
 }
}

function bbfontstyle(bbopen, bbclose) {
 var txtarea = document.post.message;

 if ((clientVer >= 4) && is_ie && is_win) {
 theSelection = document.selection.createRange().text;
 if (!theSelection) {
 txtarea.value += bbopen + bbclose;
 txtarea.focus();
 return;
 }
 document.selection.createRange().text = bbopen + theSelection + bbclose;
 txtarea.focus();
 return;
 }
 else if (txtarea.selectionEnd && (txtarea.selectionEnd - txtarea.selectionStart > 0))
 {
 mozWrap(txtarea, bbopen, bbclose);
 return;
 }
 else
 {
 txtarea.value += bbopen + bbclose;
 txtarea.focus();
 }
 storeCaret(txtarea);
}


function bbstyle(bbnumber) {
 var txtarea = document.post.message;

 txtarea.focus();
 donotinsert = false;
 theSelection = false;
 bblast = 0;

 if (bbnumber == -1) { // Close all open tags & default button names
 while (bbcode[0]) {
 butnumber = arraypop(bbcode) - 1;
 txtarea.value += bbtags[butnumber + 1];
 buttext = eval('document.post.addbbcode' + butnumber + '.value');
 eval('document.post.addbbcode' + butnumber + '.value ="' + buttext.substr(0,(buttext.length - 1)) + '"');
 }
 imageTag = false; // All tags are closed including image tags :D
 txtarea.focus();
 return;
 }

 if ((clientVer >= 4) && is_ie && is_win)
 {
 theSelection = document.selection.createRange().text; // Get text selection
 if (theSelection) {
 // Add tags around selection
 document.selection.createRange().text = bbtags[bbnumber] + theSelection + bbtags[bbnumber+1];
 txtarea.focus();
 theSelection = '';
 return;
 }
 }
 else if (txtarea.selectionEnd && (txtarea.selectionEnd - txtarea.selectionStart > 0))
 {
 mozWrap(txtarea, bbtags[bbnumber], bbtags[bbnumber+1]);
 return;
 }

 // Find last occurance of an open tag the same as the one just clicked
 for (i = 0; i < bbcode.length; i++) {
 if (bbcode[i] == bbnumber+1) {
 bblast = i;
 donotinsert = true;
 }
 }

 if (donotinsert) { // Close all open tags up to the one just clicked & default button names
 while (bbcode[bblast]) {
 butnumber = arraypop(bbcode) - 1;
 txtarea.value += bbtags[butnumber + 1];
 buttext = eval('document.post.addbbcode' + butnumber + '.value');
 eval('document.post.addbbcode' + butnumber + '.value ="' + buttext.substr(0,(buttext.length - 1)) + '"');
 imageTag = false;
 }
 txtarea.focus();
 return;
 } else { // Open tags

 if (imageTag && (bbnumber != 14)) { // Close image tag before adding another
 txtarea.value += bbtags[15];
 lastValue = arraypop(bbcode) - 1; // Remove the close image tag from the list
 document.post.addbbcode14.value = "Img"; // Return button back to normal state
 imageTag = false;
 }

 // Open tag
 txtarea.value += bbtags[bbnumber];
 if ((bbnumber == 14) && (imageTag == false)) imageTag = 1; // Check to stop additional tags after an unclosed image tag
 arraypush(bbcode,bbnumber+1);
 eval('document.post.addbbcode'+bbnumber+'.value += "*"');
 txtarea.focus();
 return;
 }
 storeCaret(txtarea);
}

// From http://www.massless.org/mozedit/
function mozWrap(txtarea, open, close)
{
 var selLength = txtarea.textLength;
 var selStart = txtarea.selectionStart;
 var selEnd = txtarea.selectionEnd;
 if (selEnd == 1 || selEnd == 2)
 selEnd = selLength;

 var s1 = (txtarea.value).substring(0,selStart);
 var s2 = (txtarea.value).substring(selStart, selEnd)
 var s3 = (txtarea.value).substring(selEnd, selLength);
 txtarea.value = s1 + open + s2 + close + s3;
 return;
}

// Insert at Claret position. Code from
// http://www.faqts.com/knowledge_base/view.phtml/aid/1052/fid/130
function storeCaret(textEl) {
 if (textEl.createTextRange) textEl.caretPos = document.selection.createRange().duplicate();
}

//-->