/**
* bbCode control by subBlue design [ www.subBlue.com ]
* Includes unixsafe colour palette selector by SHS`
*/

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

var bbcodeEnabled = true;
// 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_win = ((clientPC.indexOf('win') != -1) || (clientPC.indexOf('16bit') != -1));
var baseHeight;

/**
* Shows the help messages in the helpline window
*/
function helpline(help)
{
 document.forms[form_name].helpbox.value = help_line[help];
}

/**
* Fix a bug involving the TextRange object. From
* http://www.frostjedi.com/terra/scripts/demo/caretBug.html
*/ 
function initInsertions() 
{
 var doc;

 if (document.forms[form_name])
 {
  doc = document;
 }
 else 
 {
  doc = opener.document;
 }

 var textarea = doc.forms[form_name].elements[text_name];

 if (is_ie && typeof(baseHeight) != 'number')
 {
		/* === mChat focus fix Start === */
		var mChatFocus = window.mChatFocusFix || false;
		if(!mChatFocus)
		{
			textarea.focus();
		}
		baseHeight = doc.selection.createRange().duplicate().boundingHeight;
		/* ==== mChat focus fix End ==== */


  if (!document.forms[form_name])
  {
   document.body.focus();
  }
 }
}

/**
* bbstyle
*/
function bbstyle(bbnumber)
{ 
 if (bbnumber != -1)
 {
  bbfontstyle(bbtags[bbnumber], bbtags[bbnumber+1]);
 } 
 else 
 {
  insert_text('[*]');
  document.forms[form_name].elements[text_name].focus();
 }
}

/**
* Apply bbcodes
*/
function bbfontstyle(bbopen, bbclose)
{
 theSelection = false;

 var textarea = document.forms[form_name].elements[text_name];

 textarea.focus();

 if ((clientVer >= 4) && is_ie && is_win)
 {
  // Get text selection
  theSelection = document.selection.createRange().text;

  if (theSelection)
  {
   // Add tags around selection
   document.selection.createRange().text = bbopen + theSelection + bbclose;
   document.forms[form_name].elements[text_name].focus();
   theSelection = '';
   return;
  }
 }
 else if (document.forms[form_name].elements[text_name].selectionEnd && (document.forms[form_name].elements[text_name].selectionEnd - document.forms[form_name].elements[text_name].selectionStart > 0))
 {
  mozWrap(document.forms[form_name].elements[text_name], bbopen, bbclose);
  document.forms[form_name].elements[text_name].focus();
  theSelection = '';
  return;
 }
 
 //The new position for the cursor after adding the bbcode
 var caret_pos = getCaretPosition(textarea).start;
 var new_pos = caret_pos + bbopen.length;  

 // Open tag
 insert_text(bbopen + bbclose);

 // Center the cursor when we don't have a selection
 // Gecko and proper browsers
 if (!isNaN(textarea.selectionStart))
 {
  textarea.selectionStart = new_pos;
  textarea.selectionEnd = new_pos;
 } 
 // IE
 else if (document.selection)
 {
  var range = textarea.createTextRange(); 
  range.move("character", new_pos); 
  range.select();
  storeCaret(textarea);
 }

 textarea.focus();
 return;
}

/**
* Insert text at position
*/
function insert_text(text, spaces, popup)
{
 var textarea;
 
 if (!popup) 
 {
  textarea = document.forms[form_name].elements[text_name];
 } 
 else 
 {
  textarea = opener.document.forms[form_name].elements[text_name];
 }
 if (spaces) 
 {
  text = ' ' + text + ' ';
 }
 
 if (!isNaN(textarea.selectionStart))
 {
  var sel_start = textarea.selectionStart;
  var sel_end = textarea.selectionEnd;

  mozWrap(textarea, text, '')
  textarea.selectionStart = sel_start + text.length;
  textarea.selectionEnd = sel_end + text.length;
 }
 else if (textarea.createTextRange && textarea.caretPos)
 {
  if (baseHeight != textarea.caretPos.boundingHeight) 
  {
   textarea.focus();
   storeCaret(textarea);
  }

  var caret_pos = textarea.caretPos;
  caret_pos.text = caret_pos.text.charAt(caret_pos.text.length - 1) == ' ' ? caret_pos.text + text + ' ' : caret_pos.text + text;
 }
 else
 {
  textarea.value = textarea.value + text;
 }
 if (!popup) 
 {
  textarea.focus();
 }
}

/**
* Add inline attachment at position
*/
function attach_inline(index, filename)
{
 insert_text('[attachment=' + index + ']' + filename + '[/attachment]');
 document.forms[form_name].elements[text_name].focus();
}

/**
* Add quote text to message
*/
function addquote(post_id, username)
{
 var message_name = 'message_' + post_id;
 var theSelection = '';
 var divarea = false;

 if (document.all)
 {
  divarea = document.all[message_name];
 }
 else
 {
  divarea = document.getElementById(message_name);
 }

 // Get text selection - not only the post content :(
 if (window.getSelection)
 {
  theSelection = window.getSelection().toString();
 }
 else if (document.getSelection)
 {
  theSelection = document.getSelection();
 }
 else if (document.selection)
 {
  theSelection = document.selection.createRange().text;
 }

 if (theSelection == '' || typeof theSelection == 'undefined' || theSelection == null)
 {
  if (divarea.innerHTML)
  {
   theSelection = divarea.innerHTML.replace(/<br>/ig, '\n');
   theSelection = theSelection.replace(/<br\/>/ig, '\n');
   theSelection = theSelection.replace(/&lt\;/ig, '<');
   theSelection = theSelection.replace(/&gt\;/ig, '>');
   theSelection = theSelection.replace(/&amp\;/ig, '&');
   theSelection = theSelection.replace(/&nbsp\;/ig, ' ');
  }
  else if (document.all)
  {
   theSelection = divarea.innerText;
  }
  else if (divarea.textContent)
  {
   theSelection = divarea.textContent;
  }
  else if (divarea.firstChild.nodeValue)
  {
   theSelection = divarea.firstChild.nodeValue;
  }
 }

 if (theSelection)
 {
  if (bbcodeEnabled)
  {
   insert_text('[quote="' + username + '"]' + theSelection + '[/quote]');
  }
  else
  {
   var lines = split_lines(theSelection);
   for (i = 0; i < lines.length; i++)
   {
    insert_text('> ' + lines[i] + '\n')
   }
  }
 }

 return;
}

function split_lines(text)
{
 var lines = text.split('\n');
 var splitLines = new Array();
 var j = 0;
 for(i = 0; i < lines.length; i++)
 {
  if (lines[i].length <= 80)
  {
   splitLines[j] = lines[i];
   j++;
  }
  else
  {
   var line = lines[i];
   do
   {
    var splitAt = line.indexOf(' ', 80);
    
    if (splitAt == -1)
    {
     splitLines[j] = line;
     j++
    }
    else
    {
     splitLines[j] = line.substring(0, splitAt);
     line = line.substring(splitAt);
     j++;
    }
   }
   while(splitAt != -1)
  }
 }
 return splitLines;
}
/**
* From http://www.massless.org/mozedit/
*/
function mozWrap(txtarea, open, close)
{
 var selLength = (typeof(txtarea.textLength) == 'undefined') ? txtarea.value.length : txtarea.textLength;
 var selStart = txtarea.selectionStart;
 var selEnd = txtarea.selectionEnd;
 var scrollTop = txtarea.scrollTop;

 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;
 txtarea.selectionStart = selEnd + open.length + close.length;
 txtarea.selectionEnd = txtarea.selectionStart;
 txtarea.focus();
 txtarea.scrollTop = scrollTop;

 return;
}

/**
* Insert at Caret 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();
 }
}

/**
* Color pallette
*/
function colorPalette(dir, width, height)
{
 var r = 0, g = 0, b = 0;
 var numberList = new Array(6);
 var color = '';

 numberList[0] = '00';
 numberList[1] = '40';
 numberList[2] = '80';
 numberList[3] = 'BF';
 numberList[4] = 'FF';

 document.writeln('<table cellspacing="1" cellpadding="0" border="0">');

 for (r = 0; r < 5; r++)
 {
  if (dir == 'h')
  {
   document.writeln('<tr>');
  }

  for (g = 0; g < 5; g++)
  {
   if (dir == 'v')
   {
    document.writeln('<tr>');
   }
   
   for (b = 0; b < 5; b++)
   {
    color = String(numberList[r]) + String(numberList[g]) + String(numberList[b]);
    document.write('<td bgcolor="#' + color + '" style="width: ' + width + 'px; height: ' + height + 'px;">');
    document.write('<a href="#" onclick="bbfontstyle(\'[color=#' + color + ']\', \'[/color]\'); return false;"><img src="images/spacer.gif" width="' + width + '" height="' + height + '" alt="#' + color + '" title="#' + color + '" /></a>');
    document.writeln('</td>');
   }

   if (dir == 'v')
   {
    document.writeln('</tr>');
   }
  }

  if (dir == 'h')
  {
   document.writeln('</tr>');
  }
 }
 document.writeln('</table>');
}


/**
* Caret Position object
*/
function caretPosition()
{
 var start = null;
 var end = null;
}


/**
* Get the caret position in an textarea
*/
function getCaretPosition(txtarea)
{
 var caretPos = new caretPosition();
 
 // simple Gecko/Opera way
 if(txtarea.selectionStart || txtarea.selectionStart == 0)
 {
  caretPos.start = txtarea.selectionStart;
  caretPos.end = txtarea.selectionEnd;
 }
 // dirty and slow IE way
 else if(document.selection)
 {
 
  // get current selection
  var range = document.selection.createRange();

  // a new selection of the whole textarea
  var range_all = document.body.createTextRange();
  range_all.moveToElementText(txtarea);
  
  // calculate selection start point by moving beginning of range_all to beginning of range
  var sel_start;
  for (sel_start = 0; range_all.compareEndPoints('StartToStart', range) < 0; sel_start++)
  {  
   range_all.moveStart('character', 1);
  }
 
  txtarea.sel_start = sel_start;
 
  // we ignore the end value for IE, this is already dirty enough and we don't need it
  caretPos.start = txtarea.sel_start;
  caretPos.end = txtarea.sel_start;   
 }

 return caretPos;
}