/*

 * CodePress - Real Time Syntax Highlighting Editor written in JavaScript - http://codepress.org/

 * 

 * Copyright (C) 2006 Fernando M.A.d.S. <fermads@gmail.com>

 *

 * This program is free software; you can redistribute it and/or modify it under the terms of the 

 * GNU Lesser General Public License as published by the Free Software Foundation.

 * 

 * Read the full licence: http://www.opensource.org/licenses/lgpl-license.php

 */

CodePress = function(obj) {

	var self = document.createElement('iframe');

	self.textarea = obj;

	self.textarea.disabled = true;

	self.textarea.style.overflow = 'hidden';

	self.style.height = self.textarea.clientHeight +'px';

	self.style.width = self.textarea.clientWidth +'px';

	self.textarea.style.overflow = 'auto';

	self.style.border = '1px solid gray';

	self.frameBorder = 0; // remove IE internal iframe border

	self.style.visibility = 'hidden';

	self.style.position = 'absolute';

	self.options = self.textarea.className;

	self.initialize = function() {

		self.editor = self.contentWindow.CodePress;

		self.editor.body = self.contentWindow.document.getElementsByTagName('body')[0];

		self.editor.setCode(self.textarea.value);

		self.setOptions();

		self.editor.syntaxHighlight('init');

		self.textarea.style.display = 'none';

		self.style.position = 'static';

		self.style.visibility = 'visible';

		self.style.display = 'inline';

	}

	// obj can by a textarea id or a string (code)

	self.edit = function(obj,language) {

		if(obj) self.textarea.value = document.getElementById(obj) ? document.getElementById(obj).value : obj;

		if(!self.textarea.disabled) return;

		self.language = language ? language : self.getLanguage();

		self.src = CodePress.path+'codepress.html?language='+self.language+'&ts='+(new Date).getTime();

		if(self.attachEvent) self.attachEvent('onload',self.initialize);

		else self.addEventListener('load',self.initialize,false);

	}

	self.getLanguage = function() {

		for (language in CodePress.languages) 

			if(self.options.match('\\b'+language+'\\b')) 

				return CodePress.languages[language] ? language : 'generic';

	}

	self.setOptions = function() {

		if(self.options.match('autocomplete-off')) self.toggleAutoComplete();

		if(self.options.match('readonly-on')) self.toggleReadOnly();

		if(self.options.match('linenumbers-off')) self.toggleLineNumbers();

	}

	self.getCode = function() {

		return self.textarea.disabled ? self.editor.getCode() : self.textarea.value;

	}

	self.setCode = function(code) {

		self.textarea.disabled ? self.editor.setCode(code) : self.textarea.value = code;

	}

	self.toggleAutoComplete = function() {

		self.editor.autocomplete = (self.editor.autocomplete) ? false : true;

	}

	self.toggleReadOnly = function() {

		self.textarea.readOnly = (self.textarea.readOnly) ? false : true;

		if(self.style.display != 'none') // prevent exception on FF + iframe with display:none

			self.editor.readOnly(self.textarea.readOnly ? true : false);

	}

	self.toggleLineNumbers = function() {

		var cn = self.editor.body.className;

		self.editor.body.className = (cn==''||cn=='show-line-numbers') ? 'hide-line-numbers' : 'show-line-numbers';

	}

	self.toggleEditor = function() {

		if(self.textarea.disabled) {

			self.textarea.value = self.getCode();

			self.textarea.disabled = false;

			self.style.display = 'none';

			self.textarea.style.display = 'inline';

		}

		else {

			self.textarea.disabled = true;

			self.setCode(self.textarea.value);

			self.editor.syntaxHighlight('init');

			self.style.display = 'inline';

			self.textarea.style.display = 'none';

		}

	}

	self.edit();

	return self;

}

CodePress.languages = {	

	csharp : 'C#', 

	css : 'CSS', 

	generic : 'Generic',

	html : 'HTML',

	java : 'Java', 

	javascript : 'JavaScript', 

	perl : 'Perl', 

	ruby : 'Ruby',	

	php : 'PHP', 

	text : 'Text', 

	sql : 'SQL',

	vbscript : 'VBScript'

}

CodePress.run = function() {

	// Modified for WordPress compat to prevent loading on webkit and to

	// reference a codepress_path which is specified externally.

	if (navigator.userAgent.toLowerCase().indexOf('webkit') != -1)

		return;

	CodePress.path = codepress_path;

	var t = document.getElementsByTagName('textarea'), i, id;

	for(i=0,n=t.length;i<n;i++) {

		if(t[i].className.match('codepress')) {

			id = t[i].id;

			t[i].id = id+'_cp';

			eval(id+' = new CodePress(t[i])');

			t[i].parentNode.insertBefore(eval(id), t[i]);

		} 

	}

}

if(window.attachEvent) window.attachEvent('onload',CodePress.run);

else window.addEventListener('DOMContentLoaded',CodePress.run,false);