YAHOO.namespace("ifs");

var navCalSelectHandler = function(type,args,obj) {
	var selected = args[0];
    if (selected[0][1] < 10) { selected[0][1] = "0" + selected[0][1]; };
    if (selected[0][2] < 10) { selected[0][2] = "0" + selected[0][2]; };

    var newUrl = '/cal/main/setViewPeriod.do?b=de&date=' + selected[0][0] + selected[0][1] + selected[0][2];
	window.location.href = newUrl;
};

var groupSelectHandler = function(e) { // Depricated
	var myTarget = YAHOO.util.Event.getTarget(e);
	window.location.href = 'showMain.rdo?setappvar=group('+ myTarget.value +')';
}

YAHOO.ifs.init = function() {
// Mini Calendar
	YAHOO.ifs.cal1 = new YAHOO.widget.Calendar("cal1","cal1", {pagedate: navcalendar[0], selected: navcalendar[1] 
        +"/"+ navcalendar[2] +"/"+ navcalendar[3] +"-"+ navcalendar[4]+"/"+ navcalendar[5] +"/"+ navcalendar[6]});
	YAHOO.ifs.cal1.selectEvent.subscribe(navCalSelectHandler, YAHOO.ifs.cal1, true);
	YAHOO.ifs.cal1.render();
	YAHOO.util.Event.addListener("groupSelection", "change", groupSelectHandler); // Depreicated
// Buzz Events Widget
    if(document.getElementById('buzzTrigger')){
        var buzzTrigger = document.getElementById('buzzTrigger');
        var buzzLoaded = false;
        buzzTrigger.onclick = function() {
            if(!buzzLoaded) {
                var baseurl = 'http://calendar.duke.edu/feed/buzz_list/1/jsonp?';
                var surl = baseurl + '&callback=?';
                $.getJSON(surl);
                buzzLoaded = true;
            }
            var buzzTriggerObj = new AnimateDiv;
            buzzTriggerObj.initialize('buzzResult', 'buzzTrigger');
            buzzTriggerObj.actuate();;
            return false;
        };
    };
// Left nav menu initialization
	var initMenu = new Menu;
	initMenu.activate('artsSub', 'artsClicker', 170); // target DOM id to toggle, DOM id of button to activate, max height of target
	initMenu.activate('athleticsSub', 'athleticsClicker', 75); 
	initMenu.activate('lecturesSub', 'lecturesClicker', 75);
	initMenu.activate('lifeSub', 'lifeClicker', 135); 
	initMenu.activate('otherSub', 'otherClicker', 470);
	initMenu.activate('additionalOptionsSub', 'additionalOptionsClicker', 60);
	initMenu.activate('additionalUnivSub', 'additionalUnivClicker', 125);
// Link header graphic
    var headerHomeClick = document.getElementById('head-top');
    headerHomeClick.onclick = function () { window.location.href = 'http://calendar.duke.edu' };
// RSS widget
	popUpRss();
// Hide unnecessary date rows    
	try {
		alterDateDisplay();
	} catch (e) {
		alert('There was a problem altering the display of dates.');
	}
};

YAHOO.util.Event.onDOMReady(YAHOO.ifs.init);

// Callback for JSONP Buzz events widget
function eventsList(listData) {
	var events = listData.bwEventList.events;
	var responseList = '<ul>';
	for (var i = 0; i < events.length; i++) {
		responseList += "<li><a href=\"" + events[i].eventlink + "\">" + events[i].summary + 
        " " + events[i].start.shortdate + " " + events[i].start.time + "</a></li>";
	};
	responseList += "</ul>";
	$("#buzzResult").html(responseList);
};
// Hide date rows
function alterDateDisplay() {
	var centerCol = document.getElementById("center_column");
	var modGroupTd = centerCol.getElementsByTagName('td');
	var tdInspector = [];
	var i = undefined;
	var j = undefined;
	
    for (i = 0; i < modGroupTd.length; i++) {
       if(modGroupTd[i].className === 'dateRow') {
			tdInspector.push(modGroupTd[i].childNodes[0]);
       };
    };
	for (j = 0; j < tdInspector.length; j++) { // Search for dupes
		if(tdInspector[j + 1]) {
				if(tdInspector[j].href === tdInspector[j + 1].href) { // Found a duplicate date. // Hide it.
					tdInspector[j + 1].parentNode.parentNode.style.display = 'none'; 
					j++;
					while(tdInspector[j + 1] && tdInspector[j].href === tdInspector[j + 1].href) { // Look for more.
						tdInspector[j + 1].parentNode.parentNode.style.display = 'none';
						j++;
					}
				};
			};
	};
}

function AlterSymbol() { // Alters submenu toggle from one character to another 
	this.triggerId = undefined;
	this.symbol = '-';
}
AlterSymbol.prototype.activate = function(triggerId, symbol) {
	this.triggerId = triggerId;
	this.symbol = symbol;
	try {
		var myTriggerId = document.getElementById(this.triggerId);
		var triggerText = myTriggerId.firstChild;
		myTriggerId.removeChild(triggerText);
		var finalSymbol = document.createTextNode(this.symbol);
		myTriggerId.appendChild(finalSymbol);
	} catch(e) {
		alert('There was a problem altering the toggle icon.');
	}

	
	return;
}
// Menu logic - requires YUI animation library
function Menu() { // Enables the toggling of menu items with submenus via animating the height of the html element.
	this.viewId = 'All';
	this.triggerId = undefined;
	this.duration = .5;
}

Menu.prototype.activate = function(viewId, triggerId, targetHeight) { // Assumes toggle button will be text "+" or "-"
	this.viewId = viewId;
	this.triggerId = triggerId;
	var menuButton = document.getElementById(this.triggerId);
	menuButton.targetId = this.viewId;
	menuButton.targetHeight = targetHeight;
	menuButton.duration = this.duration;
	if (document.getElementById(menuButton.targetId).style.height !== '0px') {
		var toggleSym = new AlterSymbol;
		toggleSym.activate(triggerId, '-');
		toggleSym = undefined; // destroy object
	}
	
	menuButton.onclick = function() {
		var alterSymbol = function(sym) {
				var toggleSym = new AlterSymbol;
				toggleSym.activate(triggerId, sym);
				
				return;
			}
			
		if (this.targetHeight > 200) {
			this.duration = 1;
		}
		try{
			var myId = document.getElementById(this.targetId);
			var menuItemOff = new YAHOO.util.Anim(this.targetId, {
						height: 	{ to: 0 }
					}, 1, YAHOO.util.Easing.easeOut); 
			var menuItemOn = new YAHOO.util.Anim(this.targetId, {
						height: { to: this.targetHeight }  
					}, 1, YAHOO.util.Easing.easeOut); 
			if (myId.style.height === '0px') {
				menuItemOn.duration = this.duration;
				menuItemOn.animate(); 
				menuItemOn.onComplete.subscribe(function(){ alterSymbol('-'); });
			} else {
				menuItemOff.duration = this.duration;
				menuItemOff.animate(); 
				menuItemOff.onComplete.subscribe(function(){ alterSymbol('+'); });
			}

		} catch(e) {
			alert('The menu controls have malfunctioned.');
		}
		
	}
	
	return;
}

function popUpRss() {
	     var theTrigger = document.getElementById('rssRequest');
		 theTrigger.onclick = function() {
		 	var findPos = function(obj){  // for positioning menu on link click
		        var curleft = curtop = 0;
		        if (obj.offsetParent) {
		            do {
		                curleft += obj.offsetLeft;
		                curtop += obj.offsetTop;
		            }
		            while (obj = obj.offsetParent);
		        } else {
		            alert('Your browser does not support offsetParent so we cannot position the menu.')
		        };
				
		        return [curleft, curtop];
    		};
	
	        var posArr = findPos(this);
	        var theHost = document.getElementById('rssPopUp');
			var rssValueObj = document.getElementById('rssValue');
			rssValueObj.value = this.href; //RSS URL with params
	        theHost.style.left = (posArr[0] + 15) + 'px';
	        theHost.style.top = posArr[1] + 'px';
	        if (theHost.style.display === 'none') {
	            theHost.style.display = 'block';
	        };
			 // Format dialogue to reflect current settigns of Group and Category
			 if(document.getElementById('currGroupName')) {
				var groupDisplay = document.getElementById('rssDetailGroup');
				var currentGroup = document.createTextNode(document.getElementById('currGroupName').childNodes[0].nodeValue);
				var removeDefault = groupDisplay.childNodes[0];
				var deleteDefault = groupDisplay.replaceChild(currentGroup, removeDefault);
			 }
			 if(document.getElementById('currCategories')) {
				var catDisplay = document.getElementById('rssDetailCategory');
				var currentCat = document.createTextNode(document.getElementById('currCategories').childNodes[0].nodeValue);
				var removeDefaultCat = catDisplay.childNodes[0];
				var deleteDefaultCat = catDisplay.replaceChild(currentCat, removeDefaultCat);
			 }
			return false;
			
		 };
         
	return;
};

function AnimateDiv() {
    this.divId = undefined;
    this.triggerId = undefined;
};
AnimateDiv.prototype.initialize = function(divId, triggerId) {
    this.divId = divId;
    this.triggerId = triggerId;
};
AnimateDiv.prototype.actuate = function() {
    var myDiv = document.getElementById(this.divId);
    var myTrigger = document.getElementById(this.triggerId);
    
    var showOrHide = function(targetEle, throwAway) {
        var opacity = YAHOO.util.Dom.getStyle(targetEle, 'opacity');
        if(opacity < '1') {
            targetEle.style.display = 'none';
        };
        
        var currTextNode = myTrigger.firstChild;
        myTrigger.removeChild(currTextNode);
        var changeText = document.createTextNode(throwAway);
        myTrigger.appendChild(changeText);
        
    };
   
        var hideEvents = new YAHOO.util.Anim(myDiv, {
            opacity: {
                to: 0
            }
        }, 1, YAHOO.util.Easing.easeOut);
        var showEvents = new YAHOO.util.Anim(myDiv, {
            opacity: {
                to: 1
            }
        }, 1, YAHOO.util.Easing.easeOut);
        if (myDiv.style.display === 'block') {
            newHTML = 'More >';
            hideEvents.duration = .5;
            hideEvents.animate();
            hideEvents.onComplete.subscribe(function(){
                showOrHide(myDiv, newHTML);
            });
        }
        else {
            myDiv.style.display = 'block';
            newHTML = 'Less >';
            showEvents.duration = .5
            showEvents.animate();
            showEvents.onComplete.subscribe(function(){
                showOrHide(myDiv, newHTML);
            });
        };
    return;    
};