// The following code is taken more or less verbatim from the javascript used in the 

// PHPbb discussion board, including their method of applying bbcode (renamed fcode here) 

// to messages.



// 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 = "Fett: [b]text[/b]  (ctrl+b)";
i_help = "Kursiv: [i]Text[/i]  (ctrl+i)";
u_help = "Unterstrichen: [u]Text[/u]  (ctrl+u)";
q_help = "Zitat: [quote]text[/quote]  (ctrl+q)";
c_help = "Code: [code]Code[/code]  (ctrl+c)";
p_help = "Bild einfuegen: [img]http://bildadresse[/img]  (ctrl+p)";
w_help = "URL einfuegen: [url]http://url[/url] oder [url=http://url]URL Beschreibung[/url]  (ctrl+w)";
a_help = "Alle offenen Tags schliessen";

// Define the bbCode tags

fcode = new Array();

ftags = new Array('[b]','[/b]','[i]','[/i]','[u]','[/u]','[quote]','[/quote]','[img]','[/img]','[url]','[/url]','[color]','[/color]');

imageTag = false;



// Shows the help messages in the helpline window

function helpline(help) {

        document.getElementById("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 emoticon(text) {

        var txtarea = document.getElementById("post").text;

        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 fcstyle(fcnumber) {

        var txtarea = document.getElementById("post").text;



        txtarea.focus();

        donotinsert = false;

        theSelection = false;

        fclast = 0;



        if (fcnumber == -1) { // Close all open tags & default button names

                while (fcode[0]) {

                        butnumber = arraypop(fcode) - 1;

                        txtarea.value += ftags[butnumber + 1];

                        buttext = eval('document.getElementById("post").addfcode' + butnumber + '.value');

                        eval('document.getElementById("post").addfcode' + 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 = ftags[fcnumber] + theSelection + ftags[fcnumber+1];

                        txtarea.focus();

                        theSelection = '';

                        return;

                }

        }

        else if (txtarea.selectionEnd && (txtarea.selectionEnd - txtarea.selectionStart > 0))

        {

                mozWrap(txtarea, ftags[fcnumber], ftags[fcnumber+1]);

                return;

        }



        // Find last occurance of an open tag the same as the one just clicked

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

                if (fcode[i] == fcnumber+1) {

                        fclast = i;

                        donotinsert = true;

                }

        }



        if (donotinsert) {                // Close all open tags up to the one just clicked & default button names

                while (fcode[fclast]) {

                                butnumber = arraypop(fcode) - 1;

                                txtarea.value += ftags[butnumber + 1];

                                buttext = eval('document.getElementById("post").addfcode' + butnumber + '.value');

                                eval('document.getElementById("post").addfcode' + butnumber + '.value ="' + buttext.substr(0,(buttext.length - 1)) + '"');

                                imageTag = false;

                        }

                        txtarea.focus();

                        return;

        } else { // Open tags



                if (imageTag && (fcnumber != 14)) {                // Close image tag before adding another

                        txtarea.value += ftags[15];

                        lastValue = arraypop(fcode) - 1;        // Remove the close image tag from the list

                        document.getElementById("post").addfcode14.value = "Img";        // Return button back to normal state

                        imageTag = false;

                }



                // Open tag

                txtarea.value += ftags[fcnumber];

                if ((fcnumber == 14) && (imageTag == false)) imageTag = 1; // Check to stop additional tags after an unclosed image tag

                arraypush(fcode,fcnumber+1);

                eval('document.getElementById("post").addfcode'+fcnumber+'.value += "*"');

                txtarea.focus();

                return;

        }

        storeCaret(txtarea);

}



function checkForm() {



        formErrors = false;

  if (!document.getElementById("post").cancel) {

                if (document.getElementById("post").text.value.length < 2) {

                        formErrors = "{missing_message}";

                }

                if (document.getElementById("post").subject.value.length < 2) {

                        formErrors = "{missing_subject}";

                }

        }



        if (formErrors) {

                alert(formErrors);

                return false;

        } else {

                fcstyle(-1);

                //formObj.preview.disabled = true;

                //formObj.submit.disabled = true;

                return true;

        }

}



// 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();

}