// JS QuickTags version 1.2
//
// Copyright (c) 2002-2005 Alex King
// http://www.alexking.org/
//
// Licensed under the LGPL license
// http://www.gnu.org/copyleft/lesser.html
//
// **********************************************************************
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// **********************************************************************
//
// This JavaScript will insert the tags below at the cursor position in IE and
// Gecko-based browsers (Mozilla, Camino, Firefox, Netscape). For browsers that
// do not support inserting at the cursor position (Safari, OmniWeb) it appends
// the tags to the end of the content.
//
// The variable 'edCanvas' must be defined as the <textarea> element you want
// to be editing in. See the accompanying 'index.html' page for an example.

var edButtons = new Array();
var edLinks = new Array();
var edOpenTags = new Array();

function edButton(id, display, tagStart, tagEnd, access, open) {
    this.id = id;               // used to name the toolbar button
    this.display = display;     // label on button
    this.tagStart = tagStart;   // open tag
    this.tagEnd = tagEnd;       // close tag
    this.access = access;           // set to -1 if tag does not need to be closed
    this.open = open;           // set to -1 if tag does not need to be closed
}

edButtons.push(
    new edButton(
        'ed_p'
        ,'P'
        ,'<p>'
        ,'</p>\n\n'
        ,'p'
    )
);

edButtons.push(
    new edButton(
        'ed_block'
        ,'B-QUOTE'
        ,'<blockquote>'
        ,'</blockquote>\n'
        ,'q'
    )
);

edButtons.push(
    new edButton(
        'ed_quote'
        ,'X-QUOTE'
        ,'<blockquote class="blogQuote">'
        ,'</blockquote>\n'
        ,'x'
    )
);

edButtons.push(
    new edButton(
        'ed_pre'
        ,'PRE'
        ,'<pre>'
        ,'</pre>'
    )
);

edButtons.push(
    new edButton(
        'ed_code'
        ,'X-CODE'
        ,'<pre class="blogCode"><code>'
        ,'</code></pre>\n'
    )
);

edButtons.push(
    new edButton(
        'ed_bold'
        ,'B'
        ,'<strong>'
        ,'</strong>'
        ,'b'
    )
);

edButtons.push(
    new edButton(
        'ed_italic'
        ,'I'
        ,'<em>'
        ,'</em>'
        ,'i'
    )
);

edButtons.push(
    new edButton(
        'ed_link'
        ,'Link'
        ,''
        ,'</a>'
        ,'a'
    )
); // special case

edButtons.push(
    new edButton(
        'ed_ext_link'
        ,'Ext. Link'
        ,''
        ,'</a>'
        ,'e'
    )
); // special case

edButtons.push(
    new edButton(
        'ed_ul'
        ,'UL'
        ,'<ul>\n'
        ,'</ul>\n\n'
        ,'u'
    )
);

edButtons.push(
    new edButton(
        'ed_ol'
        ,'OL'
        ,'<ol>\n'
        ,'</ol>\n\n'
        ,'o'
    )
);

edButtons.push(
    new edButton(
        'ed_li'
        ,'LI'
        ,'\t<li>'
        ,'</li>\n'
        ,'l'
    )
);


var extendedStart = edButtons.length;

// below here are the extended buttons

edButtons.push(
    new edButton(
        'ed_h1'
        ,'H1'
        ,'<h1>'
        ,'</h1>\n\n'
        ,'1'
    )
);

edButtons.push(
    new edButton(
        'ed_h2'
        ,'H2'
        ,'<h2>'
        ,'</h2>\n\n'
        ,'2'
    )
);

edButtons.push(
    new edButton(
        'ed_h3'
        ,'H3'
        ,'<h3>'
        ,'</h3>\n\n'
        ,'3'
    )
);

edButtons.push(
    new edButton(
        'ed_h4'
        ,'H4'
        ,'<h4>'
        ,'</h4>\n\n'
        ,'4'
    )
);


edButtons.push(
    new edButton(
        'ed_dl'
        ,'DL'
        ,'<dl>\n'
        ,'</dl>\n\n'
    )
);

edButtons.push(
    new edButton(
        'ed_dt'
        ,'DT'
        ,'\t<dt>'
        ,'</dt>\n'
    )
);

edButtons.push(
    new edButton(
        'ed_dd'
        ,'DD'
        ,'\t<dd>'
        ,'</dd>\n'
    )
);

edButtons.push(
    new edButton(
        'ed_table'
        ,'TABLE'
        ,'<table>\n<tbody>'
        ,'</tbody>\n</table>\n'
    )
);

edButtons.push(
    new edButton(
        'ed_tr'
        ,'TR'
        ,'\t<tr>\n'
        ,'\n\t</tr>\n'
    )
);

edButtons.push(
    new edButton(
        'ed_td'
        ,'TD'
        ,'\t\t<td>'
        ,'</td>\n'
    )
);

function edLink(display, URL, newWin) {
    this.display = display;
    this.URL = URL;
    if (!newWin) {
        newWin = 0;
    }
    this.newWin = newWin;
}


edLinks[edLinks.length] = new edLink('alexking.org'
                                    ,'http://www.alexking.org/'
                                    );

function edShowButton(button, i) {
    if (button.access) {
        var accesskey = ' accesskey = "' + button.access + '"'
    }
    else {
        var accesskey = '';
    }
    switch (button.id) {
        case 'ed_img':
            document.write('<input type="button" id="' + button.id + '" ' + accesskey + ' class="ed_button" onclick="edInsertImage(edCanvas);" value="' + button.display + '" />');
            break;
        case 'ed_link':
            document.write('<input type="button" id="' + button.id + '" ' + accesskey + ' class="ed_button" onclick="edInsertLink(edCanvas, ' + i + ');" value="' + button.display + '" />');
            break;
        case 'ed_ext_link':
            document.write('<input type="button" id="' + button.id + '" ' + accesskey + ' class="ed_button" onclick="edInsertExtLink(edCanvas, ' + i + ');" value="' + button.display + '" />');
            break;
        case 'ed_footnote':
            document.write('<input type="button" id="' + button.id + '" ' + accesskey + ' class="ed_button" onclick="edInsertFootnote(edCanvas);" value="' + button.display + '" />');
            break;
        default:
            document.write('<input type="button" id="' + button.id + '" ' + accesskey + ' class="ed_button" onclick="edInsertTag(edCanvas, ' + i + ');" value="' + button.display + '"  />');
            break;
    }
}

function edShowLinks() {
    var tempStr = '<select onchange="edQuickLink(this.options[this.selectedIndex].value, this);"><option value="-1" selected>(Quick Links)</option>';
    for (i = 0; i < edLinks.length; i++) {
        tempStr += '<option value="' + i + '">' + edLinks[i].display + '</option>';
    }
    tempStr += '</select>';
    document.write(tempStr);
}

function edAddTag(button) {
    if (edButtons[button].tagEnd != '') {
        edOpenTags[edOpenTags.length] = button;
        document.getElementById(edButtons[button].id).value = '/' + document.getElementById(edButtons[button].id).value;
    }
}

function edRemoveTag(button) {
    for (i = 0; i < edOpenTags.length; i++) {
        if (edOpenTags[i] == button) {
            edOpenTags.splice(i, 1);
            document.getElementById(edButtons[button].id).value =       document.getElementById(edButtons[button].id).value.replace('/', '');
        }
    }
}

function edCheckOpenTags(button) {
    var tag = 0;
    for (i = 0; i < edOpenTags.length; i++) {
        if (edOpenTags[i] == button) {
            tag++;
        }
    }
    if (tag > 0) {
        return true; // tag found
    }
    else {
        return false; // tag not found
    }
}

function edCloseAllTags() {
    var count = edOpenTags.length;
    for (o = 0; o < count; o++) {
        edInsertTag(edCanvas, edOpenTags[edOpenTags.length - 1]);
    }
}

function edQuickLink(i, thisSelect) {
    if (i > -1) {
        var newWin = '';
        if (edLinks[i].newWin == 1) {
            newWin = ' target="_blank"';
        }
        var tempStr = '<a href="' + edLinks[i].URL + '"' + newWin + '>'
                    + edLinks[i].display
                    + '</a>';
        thisSelect.selectedIndex = 0;
        edInsertContent(edCanvas, tempStr);
    }
    else {
        thisSelect.selectedIndex = 0;
    }
}

function edSpell(myField) {
    var word = '';
    if (document.selection) {
        myField.focus();
        var sel = document.selection.createRange();
        if (sel.text.length > 0) {
            word = sel.text;
        }
    }
    else if (myField.selectionStart || myField.selectionStart == '0') {
        var startPos = myField.selectionStart;
        var endPos = myField.selectionEnd;
        if (startPos != endPos) {
            word = myField.value.substring(startPos, endPos);
        }
    }
    if (word == '') {
        word = prompt('Enter a word to look up:', '');
    }
    if (word != '') {
        window.open('http://www.answers.com/' + escape(word));
    }
}

function edToolbar() {
    document.write('<div id="ed_toolbar"><span>');
    for (i = 0; i < extendedStart; i++) {
        edShowButton(edButtons[i], i);
    }
    if (edShowExtraCookie()) {
        document.write(
            '<input type="button" id="entityRef" class="ed_button" onclick="entityReferencing();" value="Entity" />'
            + '<input type="button" id="ed_close" class="ed_button" onclick="edCloseAllTags();" value="Close Tags" />'
            + '<input type="button" id="ed_extra_show" class="ed_button" onclick="edShowExtra()" value="&raquo;" style="visibility: hidden;" />'
            + '</span><br />'
            + '<span id="ed_extra_buttons">'
            + '<input type="button" id="ed_extra_hide" class="ed_button" onclick="edHideExtra();" value="&laquo;" />'
            + '<input type="button" id="ed_spell" class="ed_button" onclick="edSpell(edCanvas);" value="Dict" />'
        );
    }
    else {
        document.write(
            '<input type="button" id="entityRef" class="ed_button" onclick="entityReferencing();" value="Entity" />'
            + '<input type="button" id="ed_close" class="ed_button" onclick="edCloseAllTags();" value="Close Tags" />'
            + '<input type="button" id="ed_extra_show" class="ed_button" onclick="edShowExtra()" value="&raquo;" />'
            + '</span><br />'
            + '<span id="ed_extra_buttons" style="display: none;">'
            + '<input type="button" id="ed_extra_hide" class="ed_button" onclick="edHideExtra();" value="&laquo;" />'
            + '<input type="button" id="ed_spell" class="ed_button" onclick="edSpell(edCanvas);" value="Dict" />'
        );
    }
    for (i = extendedStart; i < edButtons.length; i++) {
        edShowButton(edButtons[i], i);
    }
    document.write('</span>');
//  edShowLinks();
    document.write('</div>');
}

function edShowExtra() {
    document.getElementById('ed_extra_show').style.visibility = 'hidden';
    document.getElementById('ed_extra_buttons').style.display = 'block';
    edSetCookie(
        'js_quicktags_extra'
        , 'show'
        , new Date("December 31, 2100")
    );
}

function edHideExtra() {
    document.getElementById('ed_extra_buttons').style.display = 'none';
    document.getElementById('ed_extra_show').style.visibility = 'visible';
    edSetCookie(
        'js_quicktags_extra'
        , 'hide'
        , new Date("December 31, 2100")
    );
}

// insertion code

function edInsertTag(myField, i) {
    //IE support
    if (document.selection) {
        myField.focus();
        sel = document.selection.createRange();
        if (sel.text.length > 0) {
            sel.text = edButtons[i].tagStart + sel.text + edButtons[i].tagEnd;
        }
        else {
            if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
                sel.text = edButtons[i].tagStart;
                edAddTag(i);
            }
            else {
                sel.text = edButtons[i].tagEnd;
                edRemoveTag(i);
            }
        }
        myField.focus();
    }
    //MOZILLA/NETSCAPE support
    else if (myField.selectionStart || myField.selectionStart == '0') {
        var startPos = myField.selectionStart;
        var endPos = myField.selectionEnd;
        var cursorPos = endPos;
        var scrollTop = myField.scrollTop;
        if (startPos != endPos) {
            myField.value = myField.value.substring(0, startPos)
                          + edButtons[i].tagStart
                          + myField.value.substring(startPos, endPos)
                          + edButtons[i].tagEnd
                          + myField.value.substring(endPos, myField.value.length);
            cursorPos += edButtons[i].tagStart.length + edButtons[i].tagEnd.length;
        }
        else {
            if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
                myField.value = myField.value.substring(0, startPos)
                              + edButtons[i].tagStart
                              + myField.value.substring(endPos, myField.value.length);
                edAddTag(i);
                cursorPos = startPos + edButtons[i].tagStart.length;
            }
            else {
                myField.value = myField.value.substring(0, startPos)
                              + edButtons[i].tagEnd
                              + myField.value.substring(endPos, myField.value.length);
                edRemoveTag(i);
                cursorPos = startPos + edButtons[i].tagEnd.length;
            }
        }
        myField.focus();
        myField.selectionStart = cursorPos;
        myField.selectionEnd = cursorPos;
        myField.scrollTop = scrollTop;
    }
    else {
        if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
            myField.value += edButtons[i].tagStart;
            edAddTag(i);
        }
        else {
            myField.value += edButtons[i].tagEnd;
            edRemoveTag(i);
        }
        myField.focus();
    }
}

function edInsertContent(myField, myValue) {
    //IE support
    if (document.selection) {
        myField.focus();
        sel = document.selection.createRange();
        sel.text = myValue;
        myField.focus();
    }
    //MOZILLA/NETSCAPE support
    else if (myField.selectionStart || myField.selectionStart == '0') {
        var startPos = myField.selectionStart;
        var endPos = myField.selectionEnd;
        var scrollTop = myField.scrollTop;
        myField.value = myField.value.substring(0, startPos)
                      + myValue
                      + myField.value.substring(endPos, myField.value.length);
        myField.focus();
        myField.selectionStart = startPos + myValue.length;
        myField.selectionEnd = startPos + myValue.length;
        myField.scrollTop = scrollTop;
    } else {
        myField.value += myValue;
        myField.focus();
    }
}

function edInsertLink(myField, i, defaultValue) {
    if (!defaultValue) {
        defaultValue = 'http://';
    }
    if (!edCheckOpenTags(i)) {
        var URL = prompt('Enter the URL' ,defaultValue);
        if (URL) {
            edButtons[i].tagStart = '<a href="' + URL + '">';
            edInsertTag(myField, i);
        }
    }
    else {
        edInsertTag(myField, i);
    }
}

function edInsertExtLink(myField, i, defaultValue) {
    if (!defaultValue) {
        defaultValue = 'http://';
    }
    if (!edCheckOpenTags(i)) {
        var URL = prompt('Enter the URL' ,defaultValue);
        if (URL) {
            edButtons[i].tagStart = '<a href="' + URL + '" rel="external">';
            edInsertTag(myField, i);
        }
    }
    else {
        edInsertTag(myField, i);
    }
}

function edInsertImage(myField) {
    var myValue = prompt('Enter the URL of the image', 'http://');
    if (myValue) {
        myValue = '<img src="'
                + myValue
                + '" alt="' + prompt('Enter a description of the image', '')
                + '" />';
        edInsertContent(myField, myValue);
    }
}

function edInsertFootnote(myField) {
    var note = prompt('Enter the footnote:', '');
    if (!note || note == '') {
        return false;
    }
    var now = new Date;
    var fnId = 'fn' + now.getTime();
    var fnStart = edCanvas.value.indexOf('<ol class="footnotes">');
    if (fnStart != -1) {
        var fnStr1 = edCanvas.value.substring(0, fnStart)
        var fnStr2 = edCanvas.value.substring(fnStart, edCanvas.value.length)
        var count = countInstances(fnStr2, '<li id="') + 1;
    }
    else {
        var count = 1;
    }
    var count = '<sup><a href="#' + fnId + 'n" id="' + fnId + '" class="footnote">' + count + '</a></sup>';
    edInsertContent(edCanvas, count);
    if (fnStart != -1) {
        fnStr1 = edCanvas.value.substring(0, fnStart + count.length)
        fnStr2 = edCanvas.value.substring(fnStart + count.length, edCanvas.value.length)
    }
    else {
        var fnStr1 = edCanvas.value;
        var fnStr2 = "\n\n" + '<ol class="footnotes">' + "\n"
                   + '</ol>' + "\n";
    }
    var footnote = '    <li id="' + fnId + 'n">' + note + ' [<a href="#' + fnId + '">back</a>]</li>' + "\n"
                 + '</ol>';
    edCanvas.value = fnStr1 + fnStr2.replace('</ol>', footnote);
}

function countInstances(string, substr) {
    var count = string.split(substr);
    return count.length - 1;
}

function edSetCookie(name, value, expires, path, domain) {
    document.cookie= name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "");
}

function edShowExtraCookie() {
    var cookies = document.cookie.split(';');
    for (var i=0;i < cookies.length; i++) {
        var cookieData = cookies[i];
        while (cookieData.charAt(0) ==' ') {
            cookieData = cookieData.substring(1, cookieData.length);
        }
        if (cookieData.indexOf('js_quicktags_extra') == 0) {
            if (cookieData.substring(19, cookieData.length) == 'show') {
                return true;
            }
            else {
                return false;
            }
        }
    }
    return false;
}

function entityReferencing(){
    var d = document;
    function r(s){
    return s.replace(/([<>&\"])/g, function(m0,m1) {
    return {'<': '&lt;', '>': '&gt;', '\"': '&quot;', '&': '&amp;'}[m1];
    });
    }
    // IE
    if (d.selection) {
      d.selection.createRange().text = r(d.selection.createRange().text);
    } else {
      // Firefox, Opera
      var ta = d.getElementsByTagName('textarea'); // get extarea
      for (var i = 0; i < ta.length; i++) {
        // if contents exists inteatarea
        if (ta[i].value) {
          var s = ta[i].selectionStart;
          var e = ta[i].selectionEnd;
          var v = ta[i].value;
          var t = v.slice(s, e);
          if (t) ta[i].value = v.slice(0, s) + r(t) + v.slice(e);
        }
      }
    }
}
