/*
 * Basic wrapper for WebGains code.  *ALL* pages should include, and ALL javascript should be a child of this object.
 */

// this is handy all over the place
String.prototype.trim = function() 
{
	return this.replace(/^\s+|\s+$/g,"");
}
// ensure we only ever do this once, no matter how many times we're included for whatever reason.
if (typeof(WEBGAINS) == "undefined")
{
	WEBGAINS = {};
	WG = WEBGAINS;
}

if (typeof(WG.GUI) == 'undefined')
{
	WG.GUI = {};
}


WG.GUI.displayError = function (error)
{
	log('Failure: ' + repr(error));
	log(repr(typeof(error)));
	var messageText = '';

	WG.GUI.lastError = error;
	switch (typeof(error))
	{
		case 'undefined':
			messageText = 'An error has occured.  Please refresh your browser and try again, or submit a support request.';
			break;

		case 'string':
			messageText = error;
			break; 

		default:
			if (typeof(error.message) != 'undefined')
			{
				messageText = error.message;
			}
			else
			{
				messageText = 'An error has occured.  Please refresh your browser and try again, or submit a support request.';
			}
			break;
	}

	var newMessage = MochiKit.DOM.P({'class':'errormessage'}, messageText);

    var errorDiv = $('webgains-error');
    if (errorDiv === null)
    {
        // we want to add an error div. 
		errorDiv = DIV({'class':'confirmationmessage', 'id':'webgains-error'});
		var main = $('main');
		if (main.hasChildNodes())
		{
			main.insertBefore(errorDiv, main.childNodes[0]);
		}
		else		// pathalogical case
		{
			main.appendChild(errorDiv);
		}
    }
	errorDiv.appendChild(newMessage);
}

WG.GUI.frameSize = function()
{
	// culled (legally) from the almighty QuirksMode: http://www.quirksmode.org/viewport/compatibility.html
	var x,y;
	if (window.innerHeight) // all except Explorer
	{
		x = window.innerWidth;
		y = window.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight)
		// Explorer 6 Strict Mode
	{
		x = document.documentElement.clientWidth;
		y = document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		x = document.body.clientWidth;
		y = document.body.clientHeight;
	}
}

WG.changeLang = function (elem)
{
	var locale = elem.options[elem.selectedIndex].value;
	var dest   = window.location;
	window.location = '/lc.html?locale='
					  +escape(locale)
					  +'&dest='+escape(dest);
	return false;
}