/**
 * Taf Class
 *
 * Tell-a-friend
 *
 * @author Daniel Arsenault <darsenault@inpix.ca>
 */
function Taf()
{
	/* Object Constructor */
	this.dummy = null;
};

Taf.showForm = function()
{
	// Check if the form already exist
	var divTaf = YAHOO.util.Dom.get('taf_box');

	if(typeof(divTaf) == 'object')
	{
		Taf.createForm();
		divTaf = YAHOO.util.Dom.get('taf_box');
	}
	
	var columnn = document.getElementById("column");
	var nom = document.getElementById("taf_name");

	divTaf.style.display = "block"; 
	YAHOO.util.Dom.addClass(columnn,"taf");
	nom.focus();
	
	YAHOO.util.Event.removeListener(YAHOO.util.Dom.get('taf'), 'click');
	YAHOO.util.Event.addListener(YAHOO.util.Dom.get('taf'), 'click', Taf.hideForm);
};

Taf.hideForm = function()
{
	Taf.enableForm();
	Taf.hideMessages();
	
	var divTaf = YAHOO.util.Dom.get('taf_box');
	var columnn = document.getElementById("column");
	var nom = document.getElementById("taf_name");

	divTaf.style.display = "none"; 
	removeClass(columnn,"taf");
	
	YAHOO.util.Event.removeListener(YAHOO.util.Dom.get('taf'), 'click');
	YAHOO.util.Event.addListener(YAHOO.util.Dom.get('taf'), 'click', Taf.showForm);
	YAHOO.util.Dom.get('taf_form').reset();
};

Taf.createForm = function()
{
	var divTafBox = document.createElement('div');
	divTafBox.setAttribute('id', 'taf_box');
	
	// Close Button
	var pClose = document.createElement('p');
	YAHOO.util.Dom.addClass(pClose, 'close');
	
	var aClose = document.createElement('a');
	aClose.setAttribute('href', 'javascript:void(0)');
	YAHOO.util.Event.addListener(aClose, 'click', Taf.hideForm);
	
	var closeText = document.createTextNode(TXT_CLOSE);
	
	aClose.appendChild(closeText);
	pClose.appendChild(aClose);
	divTafBox.appendChild(pClose);
	
	// Caption
	var hCaption = document.createElement('h4');
	
	var captionText = document.createTextNode(TXT_SEND_TO_FRIEND);
	
	hCaption.appendChild(captionText);
	divTafBox.appendChild(hCaption);
	
	// Required
	var pRequired = document.createElement('p');
	YAHOO.util.Dom.addClass(pRequired, 'required');
	
	var requiredText = document.createTextNode(TXT_REQUIRED_FIELD);
	
	pRequired.appendChild(requiredText);
	divTafBox.appendChild(pRequired);
	
	// Form
	var fTafForm = document.createElement('form');
	fTafForm.setAttribute('id', 'taf_form');
	fTafForm.setAttribute('action', '');
	fTafForm.setAttribute('method', 'post');
	
	var fieldSet = document.createElement('fieldset');
	fieldSet.setAttribute('id', 'tafFieldSet');
	fTafForm.appendChild(fieldSet);
	
	// Form / From Name
	var divFromName = document.createElement('div');
	divFromName.setAttribute('id', 'tafFromName');
	
	var lblFromName = document.createElement('label');
	lblFromName.setAttribute('for', 'taf_name');
	
	var fromNameText = document.createTextNode(TXT_YOUR_NAME);
	lblFromName.appendChild(fromNameText);
	
	var iFromName = document.createElement('input');
	iFromName.setAttribute('type', 'text');
	iFromName.setAttribute('id', 'taf_name');
	iFromName.setAttribute('name', 'fromName');
	
	divFromName.appendChild(lblFromName);
	divFromName.appendChild(iFromName);
	
	fieldSet.appendChild(divFromName);
	
	// Form / From Email
	var divFromEmail = document.createElement('div');
	divFromEmail.setAttribute('id', 'tafFromEmail');
	
	var lblFromEmail = document.createElement('label');
	lblFromEmail.setAttribute('for', 'taf_mail');
	
	var fromEmailText = document.createTextNode(TXT_YOUR_EMAIL);
	lblFromEmail.appendChild(fromEmailText);
	
	var iFromEmail = document.createElement('input');
	iFromEmail.setAttribute('type', 'text');
	iFromEmail.setAttribute('id', 'taf_mail');
	iFromEmail.setAttribute('name', 'fromEmail');
	
	divFromEmail.appendChild(lblFromEmail);
	divFromEmail.appendChild(iFromEmail);
	
	fieldSet.appendChild(divFromEmail);
	
	// Form / To Name
	var divToName = document.createElement('div');
	divToName.setAttribute('id', 'tafToName');
	
	var lblToName = document.createElement('label');
	lblToName.setAttribute('for', 'taf_name2');
	
	var toNameText = document.createTextNode(TXT_FRIEND_NAME);
	lblToName.appendChild(toNameText);
	
	var iToName = document.createElement('input');
	iToName.setAttribute('type', 'text');
	iToName.setAttribute('id', 'taf_name2');
	iToName.setAttribute('name', 'toName');
	
	divToName.appendChild(lblToName);
	divToName.appendChild(iToName);
	
	fieldSet.appendChild(divToName);
	
	// Form / To Email
	var divToEmail = document.createElement('div');
	divToEmail.setAttribute('id', 'tafToEmail');
	
	var lblToEmail = document.createElement('label');
	lblToEmail.setAttribute('for', 'taf_mail2');
	
	var toEmailText = document.createTextNode(TXT_FRIEND_EMAIL);
	lblToEmail.appendChild(toEmailText);
	
	var iToEmail = document.createElement('input');
	iToEmail.setAttribute('type', 'text');
	iToEmail.setAttribute('id', 'taf_mail2');
	iToEmail.setAttribute('name', 'toEmail');
	
	divToEmail.appendChild(lblToEmail);
	divToEmail.appendChild(iToEmail);
	
	fieldSet.appendChild(divToEmail);
	
	// Form Message
	var divMessage = document.createElement('div');
	divMessage.setAttribute('id', 'tafMessage');
	
	var lblMessage = document.createElement('label');
	lblMessage.setAttribute('for', 'taf_message');
	
	var messageText = document.createTextNode(TXT_MESSAGE);
	lblMessage.appendChild(messageText);
	
	var iMessage = document.createElement('textarea');
	iMessage.setAttribute('id', 'taf_message');
	iMessage.setAttribute('rows', '5');
	iMessage.setAttribute('rows', '25');
	iMessage.setAttribute('name', 'message');
	
	divMessage.appendChild(lblMessage);
	divMessage.appendChild(iMessage);
	
	// Form Page Title
	var iPageTitle = document.createElement('input');
	iPageTitle.setAttribute('type', 'hidden');
	iPageTitle.setAttribute('id', 'taf_page_title');
	iPageTitle.setAttribute('name', 'tafPageTitle');
	iPageTitle.setAttribute('value', tafPageTitle);
	
	// Form Page Link
	var iPageLink = document.createElement('input');
	iPageLink.setAttribute('type', 'hidden');
	iPageLink.setAttribute('id', 'taf_page_link');
	iPageLink.setAttribute('name', 'tafPageLink');
	iPageLink.setAttribute('value', tafPageLink);
	
	// Form Page Language
	var iPageLang = document.createElement('input');
	iPageLang.setAttribute('type', 'hidden');
	iPageLang.setAttribute('id', 'taf_page_lang');
	iPageLang.setAttribute('name', 'tafPageLang');
	iPageLang.setAttribute('value', tafLanguage);
	
	fieldSet.appendChild(divMessage);
	fieldSet.appendChild(iPageTitle);
	fieldSet.appendChild(iPageLink);
	
	// Div Buttons
	var divButtons = document.createElement('div');
	divButtons.setAttribute('id', 'buttons');
	
	// Div Buttons / Send
	var pSend = document.createElement('p');
	YAHOO.util.Dom.addClass(pSend, 'bt_send');
	
	var aSend = document.createElement('a');
	aSend.setAttribute('href','javascript:void(0);');
	aSend.setAttribute('title', TXT_SEND_MESSAGE);
	aSend.setAttribute('id','tafSendButton');
	YAHOO.util.Event.addListener(aSend, 'click', Taf.send);
	
	var sendText = document.createTextNode(TXT_SEND);
	aSend.appendChild(sendText);
	
	pSend.appendChild(aSend);
	divButtons.appendChild(pSend);
	
	// Div Buttons / Cancel
	var pCancel = document.createElement('p');
	YAHOO.util.Dom.addClass(pCancel, 'btn_cancel');
	pCancel.setAttribute('id', 'cancel');
	
	var aCancel = document.createElement('a');
	aCancel.setAttribute('href','javascript:void(0);');
	aCancel.setAttribute('id','tafCancelButton');
	YAHOO.util.Event.addListener(aCancel, 'click', Taf.hideForm);
	
	var cancelText = document.createTextNode(TXT_CANCEL);
	aCancel.appendChild(cancelText);
	
	pCancel.appendChild(aCancel);
	divButtons.appendChild(pCancel);
	fTafForm.appendChild(divButtons);
	
	// Popups
	var divPopup = document.createElement('div');
	divPopup.setAttribute('id', 'tafPopupContainer');
	YAHOO.util.Dom.addClass(divPopup, 'popup');
	
	// Popups / Wait
	var pWait = document.createElement('p');
	pWait.setAttribute('id', 'waitMsg');
	YAHOO.util.Dom.addClass(pWait, 'waiting');
	
	var waitText = document.createTextNode(TXT_WAIT);
	pWait.appendChild(waitText);
	
	divPopup.appendChild(pWait);
	
	// Popups / Done
	var pDone = document.createElement('p');
	pDone.setAttribute('id', 'doneMsg');
	YAHOO.util.Dom.addClass(pDone, 'over');
	
	var doneText = document.createTextNode(TXT_DONE);
	pDone.appendChild(doneText);
	
	var aOk = document.createElement('a');
	aOk.setAttribute('href', 'javascript:void(0);');
	YAHOO.util.Event.addListener(aOk, 'click', Taf.hideForm);
	
	var okText = document.createTextNode('OK');
	aOk.appendChild(okText);
	
	pDone.appendChild(aOk);
	
	divPopup.appendChild(pDone);
	fTafForm.appendChild(divPopup);
	
	divTafBox.appendChild(fTafForm);
	var divOptions = YAHOO.util.Dom.get('options');
	divOptions.parentNode.insertBefore(divTafBox, divOptions);
};

////////////////////////////////////////////////////////////////////////////////
/*
	AJAX	
*/

// {{{ Constants
Taf.ERROR_SEND_MAIL		= parseInt('00000001', 2);
Taf.ERROR_SENDER_NAME	= parseInt('00000010', 2);
Taf.ERROR_SENDER_EMAIL	= parseInt('00000100', 2);
Taf.ERROR_RECIP_NAME	= parseInt('00001000', 2);
Taf.ERROR_RECIP_EMAIL	= parseInt('00010000', 2);
Taf.ERROR_MESSAGE		= parseInt('00100000', 2);

Taf.RFC2822_PATTERN = new RegExp(/(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*\")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])/);

Taf.waitClass =
{
	filter: 'alpha(opacity=30)',
	moz_opacity: '0.30',
	opacity: '0.30'
}

Taf.noWaitClass =
{
	filter: 'alpha(opacity=100)',
	moz_opacity: '1.00',
	opacity: '1.00'
}

// {{{ Static Methods
Taf.send = function()
{
	Taf.disableForm();
	Taf.showWaitMsg();
	
	// Set Page Title (IE seems to miss them from time to time)
	var iPageTitle = YAHOO.util.Dom.get('taf_page_title');
	iPageTitle.setAttribute('value', tafPageTitle);
	
	// Form Page Link (IE seems to miss them from time to time)
	var iPageLink =  YAHOO.util.Dom.get('taf_page_link');
	iPageLink.setAttribute('value', tafPageLink);
	
	/* Setting Form */
	var tafForm = YAHOO.util.Dom.get('taf_form');
	YAHOO.util.Connect.setForm(tafForm);
	
	/* Validate Form */
	var sFormData = YAHOO.util.Connect._sFormData.toString();

	var formError = Taf.validateForm(sFormData);
	Taf.showError(formError);
	if(formError == 0)
	{
		/* Process form */
		YAHOO.util.Connect.asyncRequest('POST', '/services/taf.php', Taf.callback);
	}
	else
	{
		Taf.enableForm();
		Taf.hideMessages();
	}
};

Taf.showWaitMsg = function()
{
	YAHOO.util.Dom.get('doneMsg').style.display = 'none';
	YAHOO.util.Dom.get('waitMsg').style.display = 'block';
	YAHOO.util.Dom.get('tafPopupContainer').style.display = 'block';
}

Taf.showDoneMsg = function()
{
	YAHOO.util.Dom.get('waitMsg').style.display = 'none';
	YAHOO.util.Dom.get('doneMsg').style.display = 'block';
	YAHOO.util.Dom.get('tafPopupContainer').style.display = 'block';
};

Taf.hideMessages = function()
{
	YAHOO.util.Dom.get('waitMsg').style.display = 'none';
	YAHOO.util.Dom.get('doneMsg').style.display = 'none';
	YAHOO.util.Dom.get('tafPopupContainer').style.display = 'none';
};

Taf.disableForm = function()
{
	
	var tafForm = YAHOO.util.Dom.get('taf_form');
	var tafFieldSet = YAHOO.util.Dom.get('tafFieldSet');
	var tafSendButton = YAHOO.util.Dom.get('tafSendButton');
	var tafCancelButton = YAHOO.util.Dom.get('tafCancelButton');
	var tafCancel = YAHOO.util.Dom.get('cancel');
	var waitMsg = YAHOO.util.Dom.get('waitMsg');

	// disable send button
	//tafSendButton.setAttribute('href', '');
	YAHOO.util.Event.removeListener(tafSendButton, 'click');

	
	// disable cancel button
	//tafCancelButton.setAttribute('href', '');
	YAHOO.util.Event.removeListener(tafCancelButton, 'click');
	
	YAHOO.util.Dom.setStyle(tafFieldSet, 'fliter', Taf.waitClass.filter); // Grey form
	YAHOO.util.Dom.setStyle(tafFieldSet, '-moz-opacity', Taf.waitClass.moz_opacity); // Grey form
	YAHOO.util.Dom.setStyle(tafFieldSet, 'opacity', Taf.waitClass.opacity); // Grey form
	
	YAHOO.util.Dom.setStyle(tafSendButton, 'fliter', Taf.waitClass.filter); // Grey send button
	YAHOO.util.Dom.setStyle(tafSendButton, '-moz-opacity', Taf.waitClass.moz_opacity); // Grey send button
	YAHOO.util.Dom.setStyle(tafSendButton, 'opacity', Taf.waitClass.opacity); // Grey send button
	
	YAHOO.util.Dom.setStyle(tafCancel, 'fliter', Taf.waitClass.filter); // Grey cancel button
	YAHOO.util.Dom.setStyle(tafCancel, '-moz-opacity', Taf.waitClass.moz_opacity); // Grey cancel button
	YAHOO.util.Dom.setStyle(tafCancel, 'opacity', Taf.waitClass.opacity); // Grey cancel button
};

Taf.enableForm = function()
{
	var tafForm = YAHOO.util.Dom.get('taf_form');
	var tafFieldSet = YAHOO.util.Dom.get('tafFieldSet');
	var tafSendButton = YAHOO.util.Dom.get('tafSendButton');
	var tafCancelButton = YAHOO.util.Dom.get('tafCancelButton');
	var tafCancel = YAHOO.util.Dom.get('cancel');
	var waitMsg = YAHOO.util.Dom.get('waitMsg');
	
	
	YAHOO.util.Dom.setStyle(tafFieldSet, 'fliter', Taf.noWaitClass.filter); 
	YAHOO.util.Dom.setStyle(tafFieldSet, '-moz-opacity', Taf.noWaitClass.moz_opacity); 
	YAHOO.util.Dom.setStyle(tafFieldSet, 'opacity', Taf.noWaitClass.opacity); 
	
	YAHOO.util.Dom.setStyle(tafSendButton, 'fliter', Taf.noWaitClass.filter);
	YAHOO.util.Dom.setStyle(tafSendButton, '-moz-opacity', Taf.noWaitClass.moz_opacity);
	YAHOO.util.Dom.setStyle(tafSendButton, 'opacity', Taf.noWaitClass.opacity);
	
	YAHOO.util.Dom.setStyle(tafCancel, 'fliter', Taf.noWaitClass.filter);
	YAHOO.util.Dom.setStyle(tafCancel, '-moz-opacity', Taf.noWaitClass.moz_opacity);
	YAHOO.util.Dom.setStyle(tafCancel, 'opacity', Taf.noWaitClass.opacity);
	
	// disable send button
	tafSendButton.setAttribute('href', 'javascript:void(0);');
	YAHOO.util.Event.addListener(tafSendButton, 'click', Taf.send);
	
	// disable cancel button
	tafCancelButton.setAttribute('href', 'javascript:void(0);');
	YAHOO.util.Event.addListener(tafCancelButton, 'click', Taf.hideForm);
	
	
};

Taf.validateForm = function(sFormData)
{
	var errorCode = 0;
	var oFormData = new Object();
	
	var aFormData = sFormData.split('&');
	for(var i = 0 ; i < aFormData.length ; i++)
	{
		var keyValue = aFormData[i].split('=');
		var key = keyValue[0];
		var value = escape(unescape(keyValue[1]).replace(/^[\s\u3000]+|[\s\u3000]+$/g, ''));
		oFormData[key] = value;
	}
	
	if(false == oFormData['fromName'] || '' == oFormData['fromName']
			|| undefined == oFormData['fromName'])
	{
		errorCode |= Taf.ERROR_SENDER_NAME;
	}
	
	if(false == oFormData['fromEmail'] || '' == oFormData['fromEmail']
			|| undefined == oFormData['fromEmail']
			|| !oFormData['fromEmail'].match(Taf.RFC2822_PATTERN))
	{
		errorCode |= Taf.ERROR_SENDER_EMAIL;
	}
	
	if(false == oFormData['toName'] || '' == oFormData['toName']
			|| undefined == oFormData['toName'])
	{
		errorCode |= Taf.ERROR_RECIP_NAME;
	}
	
	if(false == oFormData['toEmail'] || '' == oFormData['toEmail']
			|| undefined == oFormData['toEmail']
			|| !oFormData['toEmail'].match(Taf.RFC2822_PATTERN))
	{
		errorCode |= Taf.ERROR_RECIP_EMAIL;
	}

	return errorCode;
};

Taf.showResult = function(errorResponse)
{
	errorCode = 
	{
		sendMail:	new Boolean(errorResponse & Taf.ERROR_SEND_MAIL),
		fromName:	new Boolean(errorResponse & Taf.ERROR_SENDER_NAME),
		fromEmail:	new Boolean(errorResponse & Taf.ERROR_SENDER_EMAIL),
		toName:		new Boolean(errorResponse & Taf.ERROR_RECIP_NAME),
		toEmail:	new Boolean(errorResponse & Taf.ERROR_RECIP_EMAIL),
		message:	new Boolean(errorResponse & Taf.ERROR_MESSAGE)
	};
	
	Taf.hideMessages();
	
	// Update Mail Error
	if(0 !== errorResponse && (true == errorCode.sendMail || isNaN(errorResponse)))
	{
		alert(TXT_UNKNOWN_ERROR);
		Taf.enableForm();
	}
	
	if(0 === errorResponse)
	{
		Taf.showDoneMsg();
		YAHOO.util.Dom.get('taf_form').reset();
	}
};

Taf.showError = function(errorResponse)
{
	errorCode = 
	{
		sendMail:	new Boolean(errorResponse & Taf.ERROR_SEND_MAIL),
		fromName:	new Boolean(errorResponse & Taf.ERROR_SENDER_NAME),
		fromEmail:	new Boolean(errorResponse & Taf.ERROR_SENDER_EMAIL),
		toName:		new Boolean(errorResponse & Taf.ERROR_RECIP_NAME),
		toEmail:	new Boolean(errorResponse & Taf.ERROR_RECIP_EMAIL),
		message:	new Boolean(errorResponse & Taf.ERROR_MESSAGE)
	};
	
	// Update From Name Error
	var divFromName = YAHOO.util.Dom.get('tafFromName');
	YAHOO.util.Dom.removeClass(divFromName, 'error');
	if(true == errorCode.fromName)
	{
		YAHOO.util.Dom.addClass(divFromName, 'error');
	}
	
	// Update From Email Error
	var divFromEmail = YAHOO.util.Dom.get('tafFromEmail');
	YAHOO.util.Dom.removeClass(divFromEmail, 'error');
	if(true == errorCode.fromEmail)
	{
		YAHOO.util.Dom.addClass(divFromEmail, 'error');
	}
	
	// Update To Name Error
	var divToName = YAHOO.util.Dom.get('tafToName');
	YAHOO.util.Dom.removeClass(divToName, 'error');
	if(true == errorCode.toName)
	{
		YAHOO.util.Dom.addClass(divToName, 'error');
	}
	
	// Update To Email Error
	var divToEmail = YAHOO.util.Dom.get('tafToEmail');
	YAHOO.util.Dom.removeClass(divToEmail, 'error');
	if(true == errorCode.toEmail)
	{
		YAHOO.util.Dom.addClass(divToEmail, 'error');
	}
	
	// Update Message Error
	var divMessage = YAHOO.util.Dom.get('tafMessage');
	YAHOO.util.Dom.removeClass(divMessage, 'error');
	if(true == errorCode.message)
	{
		YAHOO.util.Dom.addClass(divMessage, 'error');
	}
};


Taf.callbackSuccess = function(o)
{
	/* Process successful communication result */
	var errorResponse = parseInt(o.responseText);
	Taf.showError(errorResponse);
	Taf.showResult(errorResponse);
};

Taf.callbackFailure = function(o)
{
	alert(/* Process communication failure */);
	
	Taf.enableForm();
};

Taf.callback =
{
	failure: Taf.callbackFailure,
	success: Taf.callbackSuccess, 
	arguments: []
	
};

Taf.init = function()
{
	var tafButton = YAHOO.util.Dom.get('taf');

	YAHOO.util.Event.purgeElement(tafButton, 'click');
	YAHOO.util.Event.addListener(tafButton, 'click', Taf.showForm);
};