// Quicktags.js
// by Alex King
// http://www.alexking.org/
// Modified by Mike Cherim
// http://green-beast.com/

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;		// access key
	this.open = open;		// set to -1 if tag does not need to be closed
}

function zeroise(number, threshold) {
	// FIXME: or we could use an implementation of printf in js here
	var str = number.toString();
	if (number < 0) { str = str.substr(1, str.length) }
	while (str.length < threshold) { str = "0" + str }
	if (number < 0) { str = '-' + str }
	return str;
}

var now = new Date();
var datetime = now.getUTCFullYear() + '-' + 
zeroise(now.getUTCMonth() + 1, 2) + '-' +
zeroise(now.getUTCDate(), 2) + 'T' + 
zeroise(now.getUTCHours(), 2) + ':' + 
zeroise(now.getUTCMinutes(), 2) + ':' + 
zeroise(now.getUTCSeconds() ,2) +
'+00:00';

edButtons[edButtons.length] = 
new edButton('ed_strong'
,'strong'
,'<strong>'
,'</strong>'
,'a'
);

edButtons[edButtons.length] = 
new edButton('ed_em'
,'emphasis'
,'<em>'
,'</em>'
,'b'
);

edButtons[edButtons.length] = 
new edButton('ed_ital'
,'italic'
,'<i lang="">'
,'</i>'
,'c'
);

edButtons[edButtons.length] = 
new edButton('ed_link'
,'anchor'
,''
,'</a>'
,'d'
); // special case

edButtons[edButtons.length] = 
new edButton('ed_img'
,'img'
,''
,''
,'s'
,-1
); // special case

edButtons[edButtons.length] = 
new edButton('ed_h1'
,'h1'
,'\n<h1>'
,'</h1>\n'
,'e'
);

edButtons[edButtons.length] = 
new edButton('ed_h2'
,'h2'
,'\n<h2>'
,'</h2>\n'
,'f'
);

edButtons[edButtons.length] = 
new edButton('ed_h3'
,'h3'
,'\n<h3>'
,'</h3>\n'
,'g'
);

edButtons[edButtons.length] = 
new edButton('ed_h4'
,'h4'
,'\n<h4>'
,'</h4>\n'
,'h'
);

edButtons[edButtons.length] = 
new edButton('ed_h5'
,'h5'
,'\n<h5>'
,'</h5>\n'
,'i'
);

edButtons[edButtons.length] = 
new edButton('ed_h6'
,'h6'
,'\n<h6>'
,'</h6>\n'
,'j'
);

edButtons[edButtons.length] = 
new edButton('ed_div'
,'div'
,'\n<div class="">\n'
,'\n</div>\n'
,'k'
);

edButtons[edButtons.length] = 
new edButton('ed_block'
,'blockquote'
,'\n<blockquote cite="">\n'
,'\n</blockquote>\n'
,'l'
);

edButtons[edButtons.length] = 
new edButton('ed_cite'
,'cite'
,'<cite>--- '
,'</cite>'
,'m'
);


edButtons[edButtons.length] = 
new edButton('ed_abbr'
,'abbr'
,'<abbr title="">'
,'</abbr>'
,'n'
);

edButtons[edButtons.length] = 
new edButton('ed_acro'
,'acronym'
,'<acronym title="">'
,'</acronym>'
,'o'
);

edButtons[edButtons.length] = 
new edButton('ed_span'
,'span'
,'<span class="">'
,'</span>'
,'p'
);

edButtons[edButtons.length] = 
new edButton('ed_del'
,'del'
,'<del datetime="' + datetime + '">'
,'</del>'
,'q'
);

edButtons[edButtons.length] = 
new edButton('ed_ins'
,'ins'
,'<ins datetime="' + datetime + '">'
,'</ins>'
,'r'
);


edButtons[edButtons.length] = 
new edButton('ed_ul'
,'ul'
,'\n<ul>\n'
,'\n</ul>\n'
,'t'
);

edButtons[edButtons.length] = 
new edButton('ed_ol'
,'ol'
,'\n<ol>\n'
,'\n</ol>\n'
,'u'
);

edButtons[edButtons.length] = 
new edButton('ed_li'
,'li'
,'\n<li>'
,'</li>\n'
,'v'
);

edButtons[edButtons.length] = 
new edButton('ed_dl'
,'dl'
,'\n<dl>'
,'</dl>\n'
,'w'
);

edButtons[edButtons.length] = 
new edButton('ed_dt'
,'dt'
,'\n<dt>'
,'</dt>\n'
,'x'
);

edButtons[edButtons.length] = 
new edButton('ed_dd'
,'dd'
,'\n<dd>'
,'</dd>\n'
,'y'
);

edButtons[edButtons.length] = 
new edButton('ed_dfn'
,'dfn'
,'<dfn title="">'
,'</dfn>'
,'0'
);

edButtons[edButtons.length] = 
new edButton('ed_small'
,'small'
,'<small>'
,'</small>'
,'1'
);

edButtons[edButtons.length] = 
new edButton('ed_dhr'
,'div hr'
,'<div class="hr"><hr /></div>'
,''
,'2'
);

edButtons[edButtons.length] = 
new edButton('ed_hr'
,'hr'
,'<hr />'
,''
,'3'
);

edButtons[edButtons.length] = 
new edButton('ed_table'
,'table'
,'<table width="" border="" cellspacing="" cellpadding="" summary="">'
,'</table>'
,'/'
);

edButtons[edButtons.length] = 
new edButton('ed_tabhd'
,'th'
,'<th colspan="">'
,'</th>'
,'.'
);

edButtons[edButtons.length] = 
new edButton('ed_caption'
,'caption'
,'<caption>'
,'</caption>'
,','
);

edButtons[edButtons.length] = 
new edButton('ed_tabrow'
,'tr'
,'<tr>'
,'</tr>'
,'-'
);

edButtons[edButtons.length] = 
new edButton('ed_tabcel'
,'td'
,'<td>'
,'</td>'
,'='
);

edButtons[edButtons.length] = 
new edButton('ed_tabfoot'
,'tfoot'
,'<tfoot>'
,'</tfoot>'
,';'
);

edButtons[edButtons.length] = 
new edButton('ed_kb'
,'kbd'
,'<kbd title="">'
,'</kbd>'
,'z'
);


edButtons[edButtons.length] = 
new edButton('ed_pre'
,'pre'
,'\n<pre>\n'
,'\n</pre>\n'
,'4'
);

edButtons[edButtons.length] = 
new edButton('ed_code'
,'code'
,'<code>'
,'</code>'
,'5'
);

edButtons[edButtons.length] = 
new edButton('ed_amp'
,'&amp;'
,'&amp;'
,''
,'6'
);

edButtons[edButtons.length] = 
new edButton('ed_leadcarr'
,'&lt;'
,'&lt;'
,''
,'7'
);

edButtons[edButtons.length] = 
new edButton('ed_endcarr'
,'&gt;'
,'&gt;'
,''
,'8'
);

edButtons[edButtons.length] = 
new edButton('ed_quot'
,'&quot;'
,'&quot;'
,''
,'9'
);

edButtons[edButtons.length] = 
new edButton('ed_apos'
,'&#039;'
,'&#039;'
,''
,'['
);

edButtons[edButtons.length] = 
new edButton('ed_dash'
,'&#45;'
,'&#45;'
,''
,']'
);

edButtons[edButtons.length] = 
new edButton('ed_comment'
,'<!--c-->'
,'<!--'
,'-->'
,'\\'
);

edButtons[edButtons.length] = 
new edButton('ed_php'
,'php'
,'&lt;?php'
,'?&gt;'
,'`'
);


/*
edButtons[edButtons.length] = 
new edButton('ed_more'
,'more'
,'<!--more-->'
,''
,''
,-1
);
*/
/*
edButtons[edButtons.length] = 
new edButton('ed_next'
,'page'
,'<!--nextpage-->'
,''
,''
,-1
);
*/
function edLink() {
	this.display = '';
	this.URL = '';
	this.newWin = 0;
}

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

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

function edShowButton(button, i) {
	if (button.id == 'ed_img') {
		document.write('<input style="cursor:pointer" type="button" id="' + button.id + '" accesskey="' + button.access + '" class="ed_button" onclick="edInsertImage(edCanvas);" value="' + button.display + '" />');
	}
	else if (button.id == 'ed_link') {
		document.write('<input style="cursor:pointer" type="button" id="' + button.id + '" accesskey="' + button.access + '" class="ed_button" onclick="edInsertLink(edCanvas, ' + i + ');" value="' + button.display + '" />');
	}
	else {
		document.write('<input style="cursor:pointer" type="button" id="' + button.id + '" accesskey="' + button.access + '" class="ed_button" onclick="edInsertTag(edCanvas, ' + i + ');" value="' + button.display + '"  />');
	}
}

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 !== null && /^\w[\w ]*$/.test(word)) {
		window.open('http://www.answers.com/' + escape(word));
	}
}

function edToolbar() {
	document.write('<div id="ed_toolbar">');
	for (i = 0; i < edButtons.length; i++) {
		edShowButton(edButtons[i], i);
	}
	document.write('<!--<input style="cursor:pointer" type="button" id="ed_spell" class="ed_button" onclick="edSpell(edCanvas);" title="Dictionary lookup" value="seek" />-->');
	document.write('<input style="cursor:pointer" type="button" id="ed_close" class="ed_button" onclick="edCloseAllTags();" title="Close all open tags" value="CloseTags" />');
//	edShowLinks(); // disabled by default
	document.write('</div>');
}

// 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;
		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;
	} 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 edInsertImage(myField) {
	var myValue = prompt('Enter the URL of the image', 'http://');
	if (myValue) {
		myValue = '<img class="' + prompt('Enter an image class (right, left, center)', '')
                + '" src="' 
				+ myValue 
				+ '" width="' + prompt('Enter an image width in pixels', '')
                + '" height="' + prompt('Enter an image height in pixels', '')
                + '" alt="' + prompt('Enter an alt attribute for the image (or leave blank)', '') 
				+ '" />';
		edInsertContent(myField, myValue);
	}
}