/**
	@preserve Copyright (c) 2012 Humu humu2009@gmail.com
	jsc3d is freely distributable under the terms of the MIT license.

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	THE SOFTWARE.
**/

/**
	@namespace JSC3D
*/
var JSC3D = JSC3D || {};


/**
	The console instance where to display debugging informations. 
	Based upon code originally provided by X3DOM project, under the MIT license.
*/
JSC3D.console = function() {
	var _container = null;
	var _isActive = false;

	var _icons = {
		info:	'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAj0lEQVQ4jc2SMRKEIAxFUzokZ7Ky8hjW3kQ+VpQWHs/IHdxqZ2eJIp1mJlV4j5BA9LpQuD6B1xTk+EvwqnB9GQ4yGjBLDTJe35wd/taM5KyTBF5qBQm8WMFN61fyoqCm9iKBeonVW/ASjWCbuKsd4DZxZwRERAo33H4kuOEU/j2laXfwnIM7eFbftEX4kfgAqhIisuNA6JsAAAAASUVORK5CYII=', 
		warn:	'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAgElEQVQ4jWNgGNTgTQ9XwJsergCyNL/u5Vn/po/n/5s+nv+ve3nWk6T5VR+3B0wzDL/q4/Yg2fb7DQwC9xsYBEhyBbLtMDGSXIHsd2QXEOWK1908Duh+R8evu3kccBqArpiQOEHb0b2A1xWEnE7QFa/7uM8Sq/l1H/dZvIE5tAAANzDIfYoSrJQAAAAASUVORK5CYII=', 
		error:	'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAo0lEQVQ4jc2RPQ6DMAyFPSLsMzExcQqUmZsQh4mRgeNhcod2Ka1LfppOYMlDJL/vPTsAtyvhuvOMq3f0+GrGVbju8mJHQyA8tTga0s4/xG9ILIlnXNSAAQA43i8Do9ZZQoByUKnMAUvNRAE6ReBeDsD+A8D+L4AWalAWIJbm0iOKpTkAbCO2pd+4jdgGgNSxcseNQ2zV7IzTWbgzTmKrJiu+pJ5VHxECVZ0hewAAAABJRU5ErkJggg=='
	};

	function _setup(parentElement, height, activate) {
		var parent = (typeof(parentElement) == 'string') ? document.getElementById(parentElement) : parentElement;
		if(!parent)
			return;

		_container = document.createElement('div');
		_container.id = 'jsc3d_console';
		_container.style.border = '2px solid olivedrab';
		_container.style.height = (height != undefined) ? height : '150px';
		_container.style.padding = '4px';
		_container.style.overflow = 'auto';
		_container.style.whiteSpace = 'pre-wrap';
		_container.style.fontFamily = 'sans-serif'; 
		_container.style.fontSize = 'small';
		_container.style.color = '#00ff00';
		_container.style.backgroundColor = 'black';
		_container.style.clear = 'both';

		parent.appendChild(_container);

		_isActive = (activate != undefined) ? activate : true;
	}

	function _activate(isActive) {
		_isActive = (isActive != undefined) ? isActive : true;
	}

	function _logInfo(msg) {
		_doLogMessage(msg, 'info');
	}

	function _logWarning(msg) {
		_doLogMessage(msg, 'warn');
	}

	function _logError(msg) {
		_doLogMessage(msg, 'error');
	}

	function _doLogMessage(msg, type) {
		if(!_isActive) {
			return false;
		}

		if(_container) {
			var newLine = document.createElement('p');
			newLine.style.margin = '0px';
			//newLine.style.height = '16px';
			newLine.style.clear = 'both';
			
			switch(type) {
			case 'info':
				newLine.innerHTML = '<img src=' + _icons.info + ' style="float:left;">'  + msg;
				break;
			case 'warn':
				newLine.innerHTML = '<img src=' + _icons.warn + ' style="float:left;">' + msg;
				break;
			case 'error':
				newLine.style.color = '#ff0000';
				newLine.innerHTML = '<img src=' + _icons.error + ' style="float:left;">' + msg;
				break;
			default:
				break;		
			}

			_container.appendChild(newLine);
			newLine.scrollIntoView(true);
		}
		else if(window['console']) {
			switch(type) {
			case 'info':
				console.info(msg);
				break;
			case 'warn':
				console.warn(msg);
				break;
			case 'error':
				console.error(msg);
				break;
			default:
				break;			
			}
		}
	}

	function _clear() {
		if(_isActive && _container != null) {
			while(_container.lastChild) {
				_container.removeChild(_container.lastChild);
			}
		}
	}

	return {
		setup:		_setup, 
		activate:	_activate, 
		logInfo:	_logInfo, 
		logWarning:	_logWarning, 
		logError:	_logError, 
		clear:		_clear
	};
} ();