/**
 * Include script for javascript application layer.
 * 
 * @author R.J.T. de Vries <rdevries@thirdwave.nl>
 * @version 1.00, 09/04/2006
 * @access public
 */

//------------------------------------------------------------------------------
// PHASE I: INCLUDE ALL NECESSARY JAVASCRIPT FILES.
//------------------------------------------------------------------------------
document.write("<script src='/cms/jscripts/cms.event.js'></script>");
document.write("<script src='/cms/jscripts/cms.functions.js'></script>");
document.write("<script src='/cms/jscripts/cms.cookie.js'></script>");
document.write("<script src='/cms/jscripts/cms.cookie.check.js'></script>");
document.write("<script src='/cms/jscripts/cms.dateinput.js'></script>");
document.write("<script src='/inc/jscripts/Menu.js'></script>");
document.write("<script src='/inc/jscripts/FormDependencies.js'></script>");
document.write("<script src='/inc/jscripts/TabManager.js'></script>");

//------------------------------------------------------------------------------
// PHASE II: INITIALIZATION FUNCTION, CALLED ON DOCUMENT LOAD EVENT
//------------------------------------------------------------------------------

/**
 * Instance of the Menu object.
 * @var object menu
 * @access global
 */
var menu = null;

/**
 * Instance of the FormDependencies object.
 * @var object formDependencies
 * @access global
 */
var formDependencies = null;

/**
 * Instance of TabManager object.
 * @var object tabManager
 * @access global
 */
var tabManager = null;

/**
 * Instance of the dateinput object.
 * @var object dateinput
 * @access global
 */
var dateinput = null;

/**
 * Initialization function.
 *
 * @author R.J.T. de Vries <rdevries@thirdwave.nl>
 * @param		boolean		refresh		should the nav-list be refreshed? default to true.
 * @return 	void
 * @access	public
 */
function init() {
	var inps,					// collection of input elements in current document.
			radios,				// radio elements with attribute 'showssubform' set to 'yes'.
			selects,			// all selects in current document.
			menu,					// instance of the Menu object.
			i;						// iterator.
			
	// initialize menu.
	menu = new Menu;
	menu.init();
	
	// set formdependencies.
	formDependencies = new FormDependencies;
	formDependencies.init();
	
	if ( typeof(TabManager) != 'undefined' ) {
		tabManager = new TabManager;
		tabManager.init();
	}
	
	// add events to the username and password input elements.
	inps = document.getElementsByTagName('input');
	for ( i = 0; i < inps.length; i++ ) {
		if ( inps[i].className.indexOf('deftxt') != -1 ) {
			inps[i].setAttribute('defaultText', inps[i].value);
			addEvent(inps[i], 'focus', removeDefTxt);
			addEvent(inps[i], 'blur', restoreDefTxt);
			if ( inps[i].type == 'password' ) {
				//inps[i].setAttribute('ispass', 'yes');
				//changeInputType(inps[i], 'text');
			}
		}
	}

	dateinput = new Dateinput;
	dateinput.init();
	
	if ( radios = document.getElementsByAttribute('showssubform', 'yes', 'input') ) {
		for ( i = 0; i < radios.length; i++ ) {
			addEvent(radios[i], 'click', toggleSubform);
			if ( radios[i].checked ) toggleSubform(radios[i]);
		}
	}
	
	selects = document.getElementsByTagName('select');
	for ( i = 0; i < selects.length; i++ ) {
		if ( selects[i].getAttribute('val') ) {
			selects[i].value = selects[i].getAttribute('val');
		}
	}
} // init()

/**
 * Remove the default text from inputs to which this event was attached.
 * 
 * @param		object	[e]	event object for Mozilla based browsers.
 * @return	void
 */
function removeDefTxt(e) {
	if ( !e ) e = window.event;
	var eventSrc = getEventSrc(e);
	if ( eventSrc.getAttribute('defaultText') == eventSrc.value ) {
		eventSrc.value = '';
		if ( eventSrc.getAttribute('ispass') == 'yes' ) {
			eventSrc = changeInputType(eventSrc, 'password');
		}
		eventSrc.className = eventSrc.className.replace(' deftxt', '');
	}
	setTimeout( function() { eventSrc.focus(); }, 100);
} // removeDefTxt()

/**
 * Restore the default value for inputs to which this event was attached.
 * 
 * @param		object	[e]	event object for Mozilla based browsers.
 * @return	void
 */
function restoreDefTxt(e) {
	if ( !e ) e = window.event;
	var eventSrc = getEventSrc(e);
	if ( eventSrc.value == '' ) {
		eventSrc.value = eventSrc.getAttribute('defaultText');
		if ( eventSrc.getAttribute('ispass') == 'yes' ) {
			changeInputType(eventSrc, 'text');
		}
		eventSrc.className += ' deftxt';
	}
} // restoreDefTxt()

/**
 * Change the type of given input in a way that even Internet Explorer can
 * understand.
 * 
 * @param		object		inp				input element.
 * @param		string		newtype		new type to set.
 * @return	void
 */
function changeInputType(inp, newtype) {
	var str, input;
	try {
		inp.setAttribute('type', newtype);
	} catch(e) {
		str = "<input type='" + newtype + "' name='" + inp.name + "' value='" + inp.value + "' class='" + inp.className + "'>";
		input = document.createElement(str);
		input.setAttribute('ispass', 'yes');
		input.setAttribute('defaultText', inp.getAttribute('defaultText'));
		inp.parentNode.replaceChild(input, inp);
		addEvent(input, 'focus', removeDefTxt);
		addEvent(input, 'blur', restoreDefTxt);
		inp = input;
	}
	return inp;
} // changeInputType()

/**
 * Toggles a subfrom, depending on the given event(source) or given element.
 * Given variable e could either be an event (for Mozilla based browsers), or
 * a radio input element.
 * 
 * @param		type	var
 * @return	type	var
 * @access	public/private
 */
function toggleSubform(e) {
	var eventSrc,			// source of given event.
			val,					// value of the radio element involved.
			subforms,			// subforms that have attr. 'subformto' set to val.
			i;						// iterator.
	
	if ( !e ) e = window.event;
	eventSrc = e.tagName ? e : getEventSrc(e);
	
	if ( eventSrc.tagName.toLowerCase() == 'label' ) {
		eventSrc = document.getElementById(eventSrc.getAttribute('for'));
		if ( !eventSrc ) return false;
	}
	val = eventSrc.value || false;
	
	subforms = document.getElementsByAttribute('issubform', 'yes', 'div');
	for ( i = 0; i < subforms.length; i++ ) {
		if ( subforms[i].getAttribute('subformto') === val ) {
			subforms[i].style.display = 'block';
		} else {
			subforms[i].style.display = 'none';
		}
	}
} // toggleSubform()

window.onload = init;