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/*
 * CodePress - Real Time Syntax Highlighting Editor written in JavaScript - http://codepress.org/
 * 
 * Copyright (C) 2007 Fernando M.A.d.S. <fermads@gmail.com>
 *
 * Developers:
 *		Fernando M.A.d.S. <fermads@gmail.com>
 *		Michael Hurni <michael.hurni@gmail.com>
 * Contributors: 	
 *		Martin D. Kirk
 *
 * 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 = {
	scrolling : false,
	autocomplete : true,
	
	// set initial vars and start sh
	initialize : function() {
		if(typeof(editor)=='undefined' && !arguments[0]) return;
		chars = '|32|46|62|'; // charcodes that trigger syntax highlighting
		cc = '\u2009'; // carret char
		editor = document.getElementsByTagName('pre')[0];
		editor.contentEditable = 'true';
		document.getElementsByTagName('body')[0].onfocus = function() {editor.focus();}
		document.attachEvent('onkeydown', this.metaHandler);
		document.attachEvent('onkeypress', this.keyHandler);
		window.attachEvent('onscroll', function() { if(!CodePress.scrolling) setTimeout(function(){CodePress.syntaxHighlight('scroll')},1)});
		completeChars = this.getCompleteChars();
		completeEndingChars =  this.getCompleteEndingChars();
		setTimeout(function() { window.scroll(0,0) },50); // scroll IE to top
	},
	
	// treat key bindings
	keyHandler : function(evt) {
		charCode = evt.keyCode;
		fromChar = String.fromCharCode(charCode);
		
		if( (completeEndingChars.indexOf('|'+fromChar+'|')!= -1 || completeChars.indexOf('|'+fromChar+'|')!=-1  )&& CodePress.autocomplete) { // auto complete
			if(!CodePress.completeEnding(fromChar))
			     CodePress.complete(fromChar);
		}
	    else if(chars.indexOf('|'+charCode+'|')!=-1||charCode==13) { // syntax highlighting
		 	CodePress.syntaxHighlight('generic');
		}
	},

	metaHandler : function(evt) {
		keyCode = evt.keyCode;
		
		if(keyCode==9 || evt.tabKey) { 
			CodePress.snippets();
		}
		else if((keyCode==122||keyCode==121||keyCode==90) && evt.ctrlKey) { // undo and redo
			(keyCode==121||evt.shiftKey) ? CodePress.actions.redo() :  CodePress.actions.undo(); 
			evt.returnValue = false;
		}
		else if(keyCode==34||keyCode==33) { // handle page up/down for IE
			self.scrollBy(0, (keyCode==34) ? 200 : -200); 
			evt.returnValue = false;
		}
		else if(keyCode==46||keyCode==8) { // save to history when delete or backspace pressed
		 	CodePress.actions.history[CodePress.actions.next()] = editor.innerHTML;
		}
		else if((evt.ctrlKey || evt.metaKey) && evt.shiftKey && keyCode!=90)  { // shortcuts = ctrl||appleKey+shift+key!=z(undo) 
			CodePress.shortcuts(keyCode);
			evt.returnValue = false;
		}
		else if(keyCode==86 && evt.ctrlKey)  { // handle paste
			window.clipboardData.setData('Text',window.clipboardData.getData('Text').replace(/\t/g,'\u2008'));
		 	top.setTimeout(function(){CodePress.syntaxHighlight('paste');},10);
		}
		else if(keyCode==67 && evt.ctrlKey)  { // handle cut
			// window.clipboardData.setData('Text',x[0]);
			// code = window.clipboardData.getData('Text');
		}
	},

	// put cursor back to its original position after every parsing
	
	
	findString : function() {
		range = self.document.body.createTextRange();
		if(range.findText(cc)){
			range.select();
			range.text = '';
		}
	},
	
	// split big files, highlighting parts of it
	split : function(code,flag) {
		if(flag=='scroll') {
			this.scrolling = true;
			return code;