// Heads up! August 2003  - Geir Bkholt
// This file now requires the javascript variable portal_url to be set 
// in the plone_javascript_variables.js file. Any other variables from Plone
// that you want to pass into these scripts should be placed there.

/* <dtml-var "enableHTTPCompression(request=REQUEST, debug=1, js=1)"> (this is for http compression) */

function registerPloneFunction(func){
	// registers a function to fire onload. 
	// Turned out we kept doing this all the time
	// Use this for initilaizing any javascript that should fire once the page has been loaded. 
	// 
	if (window.addEventListener) window.addEventListener("load",func,false);
	else if (window.attachEvent) window.attachEvent("onload",func);   
  }

function unRegisterPloneFunction(func){
	// uregisters a previous function to fire onload. 
	if (window.removeEventListener) window.removeEventListener("load",func,false);
	else if (window.detachEvent) window.detachEvent("onload",func);   
  }

function getContentArea(){
	// to end all doubt on where the content sits. It also felt a bit silly doing this over and over in every
	// function, even if it is a tiny operation. Just guarding against someone changing the names again, in the name
	// of semantics or something.... ;)
	node =  document.getElementById('region-content')
	if (! node){
		node = document.getElementById('content')
		}
	return node
	}

function wrapNode(node, wrappertype, wrapperclass){
	// utility function to wrap a node "node" in an arbitrary element of type "wrappertype" , with a class of "wrapperclass"
	wrapper = document.createElement(wrappertype)
	wrapper.className = wrapperclass;
	innerNode = node.parentNode.replaceChild(wrapper,node);
	wrapper.appendChild(innerNode)
}
  










// The calendar popup show/hide:

	function showDay(date) {
		document.getElementById('day' + date).style.visibility = 'visible';
		return true;
	}	
	function hideDay(date) {
		document.getElementById('day' + date).style.visibility = 'hidden';
		return true;
	}



	
// Focus on error or tabindex=1 
function setFocus() {
	var xre = new RegExp(/\berror\b/);
	// Search only forms to avoid spending time on regular text
	for (var f = 0; (formnode = document.getElementsByTagName('form').item(f)); f++) {
		// Search for errors first, focus on first error if found
		for (var i = 0; (node = formnode.getElementsByTagName('div').item(i)); i++) {
			if (xre.exec(node.className)) {
				for (var j = 0; (inputnode = node.getElementsByTagName('input').item(j)); j++) {
					inputnode.focus();
					return;   
				}
			}
		}
		// If no error, focus on input element with tabindex 1
		
		
		// uncomment to reactivate
		// this part works as intended, but there are too many places where this function causes pain, moving 
		// focus away from a field in whuch the user is already typing
		
		//for (var i = 0; (node = formnode.getElementsByTagName('input').item(i)); i++) {
		 //   if (node.getAttribute('tabindex') == 1) {
		 //	   node.focus();
		 //		return;   
		 //   }
		//}
	}
}
registerPloneFunction(setFocus)





/********* Table sorter script *************/
// Table sorter script, thanks to Geir Bkholt for this.
// DOM table sorter originally made by Paul Sowden 

function compare(a,b)
{
	au = new String(a);
	bu = new String(b);

	if (au.charAt(4) != '-' && au.charAt(7) != '-')
	{
	var an = parseFloat(au)
	var bn = parseFloat(bu)
	}
	if (isNaN(an) || isNaN(bn))
		{as = au.toLowerCase()
		 bs = bu.toLowerCase()
		if (as > bs)
			{return 1;}
		else
			{return -1;}
		}
	else {
	return an - bn;
	}
}



function getConcatenedTextContent(node) {
	var _result = "";
	  if (node == null) {
			return _result;
	  }
	var childrens = node.childNodes;
	var i = 0;
	while (i < childrens.length) {
		var child = childrens.item(i);
		switch (child.nodeType) {
			case 1: // ELEMENT_NODE
			case 5: // ENTITY_REFERENCE_NODE
				_result += getConcatenedTextContent(child);
				break;
			case 3: // TEXT_NODE
			case 2: // ATTRIBUTE_NODE
			case 4: // CDATA_SECTION_NODE
				_result += child.nodeValue;
				break;
			case 6: // ENTITY_NODE
			case 7: // PROCESSING_INSTRUCTION_NODE
			case 8: // COMMENT_NODE
			case 9: // DOCUMENT_NODE
			case 10: // DOCUMENT_TYPE_NODE
			case 11: // DOCUMENT_FRAGMENT_NODE
			case 12: // NOTATION_NODE
				// skip
				break;
		}
		i ++;
	}
  	return _result;
}

function sort(e) {
	var el = window.event ? window.event.srcElement : e.currentTarget;

	// a pretty ugly sort function, but it works nonetheless
	var a = new Array();
	// check if the image or the th is clicked. Proceed to parent id it is the image
	// NOTE THAT nodeName IS UPPERCASE
	if (el.nodeName == 'IMG') el = el.parentNode;
	//var name = el.firstChild.nodeValue;
	// This is not very robust, it assumes there is an image as first node then text
	var name = el.childNodes.item(1).nodeValue;
	var dad = el.parentNode;
	var node;
	
	// kill all arrows
	for (var im = 0; (node = dad.getElementsByTagName("th").item(im)); im++) {
		// NOTE THAT nodeName IS IN UPPERCASE
		if (node.lastChild.nodeName == 'IMG')
		{
			lastindex = node.getElementsByTagName('img').length - 1;
			node.getElementsByTagName('img').item(lastindex).setAttribute('src',portal_url + '/arrowBlank.gif');
		}
	}
	
	for (var i = 0; (node = dad.getElementsByTagName("th").item(i)); i++) {
		var xre = new RegExp(/\bnosort\b/);
		// Make sure we are not messing with nosortable columns, then check second node.
		if (!xre.exec(node.className) && node.childNodes.item(1).nodeValue == name) 
		{
			//window.alert(node.childNodes.item(1).nodeValue;
			lastindex = node.getElementsByTagName('img').length -1;
			node.getElementsByTagName('img').item(lastindex).setAttribute('src',portal_url + '/arrowUp.gif');
			break;
		}
	}

	var tbody = dad.parentNode.parentNode.getElementsByTagName("tbody").item(0);
	for (var j = 0; (node = tbody.getElementsByTagName("tr").item(j)); j++) {

		// crude way to sort by surname and name after first choice
		a[j] = new Array();
		a[j][0] = getConcatenedTextContent(node.getElementsByTagName("td").item(i));
		a[j][1] = getConcatenedTextContent(node.getElementsByTagName("td").item(1));
		a[j][2] = getConcatenedTextContent(node.getElementsByTagName("td").item(0));		
		a[j][3] = node;
	}

	if (a.length > 1) {
	
		a.sort(compare);

		// not a perfect way to check, but hell, it suits me fine
		if (a[0][0] == getConcatenedTextContent(tbody.getElementsByTagName("tr").item(0).getElementsByTagName("td").item(i))
		   && a[1][0] == getConcatenedTextContent(tbody.getElementsByTagName("tr").item(1).getElementsByTagName("td").item(i))) 
		{
			a.reverse();
			lastindex = el.getElementsByTagName('img').length - 1;
			el.getElementsByTagName('img').item(lastindex).setAttribute('src', portal_url + '/arrowDown.gif');
		}

	}
	
	for (var j = 0; j < a.length; j++) {
		tbody.appendChild(a[j][3]);
	}
}
	
function initalizeTableSort(e) {
	var tbls = document.getElementsByTagName('table');
	for (var t = 0; t < tbls.length; t++)
		{
		// elements of class="listing" can be sorted
		var re = new RegExp(/\blisting\b/)
		// elements of class="nosort" should not be sorted
		var xre = new RegExp(/\bnosort\b/)
		if (re.exec(tbls[t].className) && !xre.exec(tbls[t].className))
		{
			try {
				var tablename = tbls[t].getAttribute('id');
				var thead = document.getElementById(tablename).getElementsByTagName("thead").item(0);
				var node;
				// set up blank spaceholder gifs
				blankarrow = document.createElement('img');
				blankarrow.setAttribute('src', portal_url + '/arrowBlank.gif');
				blankarrow.setAttribute('height',6);
				blankarrow.setAttribute('width',9);
				// the first sortable column should get an arrow initially.
				initialsort = false;
				for (var i = 0; (node = thead.getElementsByTagName("th").item(i)); i++) {
					// check that the columns does not have class="nosort"
					if (!xre.exec(node.className)) {
						node.insertBefore(blankarrow.cloneNode(1), node.firstChild);
						if (!initialsort) {
							initialsort = true;
							uparrow = document.createElement('img');
							uparrow.setAttribute('src', portal_url + '/arrowUp.gif');
							uparrow.setAttribute('height',6);
							uparrow.setAttribute('width',9);
							node.appendChild(uparrow);
						} else {
							node.appendChild(blankarrow.cloneNode(1));
						}
	
						if (node.addEventListener) node.addEventListener("click",sort,false);
						else if (node.attachEvent) node.attachEvent("onclick",sort);
					}
				}
			} catch(er) {}
		}
	}
}   
// **** End table sort script ***
registerPloneFunction(initalizeTableSort)   


// Actions used in the folder_contents view
function submitFolderAction(folderAction) {
	document.folderContentsForm.action = document.folderContentsForm.action+'/'+folderAction;
	document.folderContentsForm.submit();
}

function submitFilterAction() {
	document.folderContentsForm.action = document.folderContentsForm.action+'/folder_contents';
	filter_selection=document.getElementById('filter_selection');
	for (var i =0; i < filter_selection.length; i++){
		if (filter_selection.options[i].selected) {
			if (filter_selection.options[i].value=='#') {
				document.folderContentsForm.filter_state.value='clear_view_filter';
			}
			else {
				document.folderContentsForm.filter_state.value='set_view_filter';
			}
		}						
	}
	document.folderContentsForm.submit();
}
	

// Functions for selecting all checkboxes in folder_contents/search_form view

function selectAll(id, formName) {
  // get the elements. if formName is p rovided, get the elements inside the form
  if (formName==null) {
	 checkboxes = document.getElementsByName(id)
	 for (i = 0; i < checkboxes.length; i++)
		 checkboxes[i].checked = true ;
  } else {
	 for (i=0; i<document.forms[formName].elements.length;i++)
	 {
	   if (document.forms[formName].elements[i].name==id) 
			document.forms[formName].elements[i].checked=true;
	  }
  }
}

function deselectAll(id, formName) {
  if (formName==null) {
	 checkboxes = document.getElementsByName(id)
	 for (i = 0; i < checkboxes.length; i++)
		 checkboxes[i].checked = false ;
  } else {
	 for (i=0; i<document.forms[formName].elements.length;i++)
	 {
	   if (document.forms[formName].elements[i].name==id) 
			document.forms[formName].elements[i].checked=false;
	  }
  }
}

function toggleSelect(selectbutton, id, initialState, formName) {
  // required selectbutton: you can pass any object that will function as a toggle
  // optional id: id of the the group of checkboxes that needs to be toggled (default=ids:list
  // optional initialState: initial state of the group. (default=false)
  //   e.g. folder_contents is false, search_form=true because the item boxes
  //   are checked initially.
  // optional formName: name of the form in which the boxes reside, use this if there are more
  //   forms on the page with boxes with the same name

  id=id || 'ids:list'  // defaults to ids:list, this is the most common usage

  if (selectbutton.isSelected==null)
  {
	  initialState=initialState || false;
	  selectbutton.isSelected=initialState;
  }
  
  // create and use a property on the button itself so you don't have to 
  // use a global variable and we can have as much groups on a page as we like.
  if (selectbutton.isSelected == false) {
	selectbutton.setAttribute('src', portal_url + '/select_none_icon.gif');
	selectbutton.isSelected=true;
	return selectAll(id, formName);
  }
  else {
	selectbutton.setAttribute('src',portal_url + '/select_all_icon.gif');
	selectbutton.isSelected=false;
	return deselectAll(id, formName);
  }
}

 

// script for detecting external links.
// sets their target-attribute to _blank , and adds a class external

function scanforlinks(){
	// securing against really old DOMs 
	
	if (! document.getElementsByTagName){return false};
	if (! document.getElementById){return false};
	// Quick utility function by Geir Bkholt
	// Scan all links in the document and set classes on them dependant on 
	// whether they point to the current site or are external links
	
	contentarea = getContentArea()
	if (! contentarea){return false}
	
	links = contentarea.getElementsByTagName('a');
	for (i=0; i < links.length; i++){	  
		if ((links[i].getAttribute('href'))&&(links[i].className.indexOf('link-plain')==-1 )){
			var linkval = links[i].getAttribute('href')
			// check if the link href is a relative link, or an absolute link to the current host.
			if (linkval.toLowerCase().indexOf(window.location.protocol+'//'+window.location.host)==0) {
				// we are here because the link is an absolute pointer internal to our host
				// do nothing
			} else if (linkval.indexOf('http://LARACINE/') != 0){
				// not a http-link. Possibly an internal relative link, but also possibly a mailto ot other snacks
				// add tests for all relevant protocols as you like.
				
				protocols = ['mailto', 'ftp', 'news', 'irc', 'h323', 'sip', 'callto', 'https']
				// h323, sip and callto are internet telephony VoIP protocols
				
				for (p=0; p < protocols.length; p++){  
					 if (linkval.indexOf(protocols[p]+':') == 0){
					// this link matches the protocol . add a classname protocol+link
					//links[i].className = 'link-'+protocols[p]
						wrapNode(links[i], 'span', 'link-'+protocols[p])
						break;
					}
				}
			}else{
				// we are in here if the link points to somewhere else than our site.
				if ( links[i].getElementsByTagName('img').length == 0 ){
					// we do not want to mess with those links that already have images in them
					//links[i].className = 'link-external'
					wrapNode(links[i], 'span', 'link-external')
					//links[i].setAttribute('target','_blank')
					}
				
				
				
				
			}
		}
	}
}
registerPloneFunction(scanforlinks)   


function climb(node, word){
	 // traverse childnodes
	if (! node){return false}
	if (node.hasChildNodes) {
		var i;
		for (i=0;i<node.childNodes.length;i++) {
			climb(node.childNodes[i],word);
		}
		if (node.nodeType == 3){
			checkforhighlight(node, word);
		   // check all textnodes. Feels inefficient, but works
		}
}
function checkforhighlight(node,word) {
		ind = node.nodeValue.toLowerCase().indexOf(word.toLowerCase())
		if (ind != -1) {
			if (node.parentNode.className != "highlightedSearchTerm"){
				par = node.parentNode;
				contents = node.nodeValue;
			
				// make 3 shiny new nodes
				hiword = document.createElement("span");
				hiword.className = "highlightedSearchTerm";
				hiword.appendChild(document.createTextNode(contents.substr(ind,word.length)));
				
				par.insertBefore(document.createTextNode(contents.substr(0,ind)),node);
				par.insertBefore(hiword,node);
				par.insertBefore(document.createTextNode(contents.substr(ind+word.length)),node);

				par.removeChild(node);
				}
			} 
		}
  
}


function correctPREformatting(){
		// small utility thing to correct formatting for PRE-elements and some others
		// thanks to Michael Zeltner for CSS-guruness and research ;) 
		// currently not activated
		contentarea = getContentArea();
		if (! contentarea){return false}
		
		pres = contentarea.getElementsByTagName('pre');
		for (i=0;i<pres.length;i++){
		   wrapNode(pres[i],'div','visualOverflow')
			}
			   
		//tables = contentarea.getElementsByTagName('table');
		// for (i=0;i<tables.length;i++){
		//   if (tables[i].className=="listing"){
		//   wrapNode(tables[i],'div','visualOverflow')
		//  }
		//}	  
}
//registerPloneFunction(correctPREformatting);

function highlightSearchTerm() {
		// search-term-highlighter function --  Geir Bkholt
		query = window.location.search
		// _robert_ ie 5 does not have decodeURI 
		if (typeof decodeURI != 'undefined'){
			query = unescape(decodeURI(query)) // thanks, Casper 
		}
		else {
			return false
		}
		if (query){
			var qfinder = new RegExp()
			qfinder.compile("searchterm=([^&]*)","gi")
			qq = qfinder.exec(query)
			if (qq && qq[1]){
				query = qq[1]
				
				// the cleaner bit is not needed anymore, now that we travese textnodes. 
				//cleaner = new RegExp
				//cleaner.compile("[\\?\\+\\\\\.\\*]",'gi')
				//query = query.replace(cleaner,'')
				
				if (!query){return false}
				queries = query.replace(/\+/g,' ').split(/\s+/)
				
				// make sure we start the right place and not higlight menuitems or breadcrumb
				contentarea = getContentArea();
				for (q=0;q<queries.length;q++) {
									   // don't highlight reserved catalog search terms
									   if (queries[q].toLowerCase() != 'not'
											   && queries[q].toLowerCase() != 'and'
											   && queries[q].toLowerCase() != 'or') {
					   climb(contentarea,queries[q]);
									   }
				}
			}
		}
}
registerPloneFunction(highlightSearchTerm);


// ----------------------------------------------
// StyleSwitcher functions written by Paul Sowden
// http://www.idontsmoke.co.uk/ss/
// - - - - - - - - - - - - - - - - - - - - - - -
// For the details, visit ALA:
// http://www.alistapart.com/stories/alternate/
// ----------------------------------------------

function setActiveStyleSheet(title, reset) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
	if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
	  a.disabled = true;
	  if(a.getAttribute("title") == title) a.disabled = false;
	}
  }
  if (reset == 1) {
  createCookie("wstyle", title, 365);
  }
}

function setStyle() {
var style = readCookie("wstyle");
if (style != null) {
setActiveStyleSheet(style, 0);
}
}

function createCookie(name,value,days) {
  if (days) {
	var date = new Date();
	date.setTime(date.getTime()+(days*24*60*60*1000));
	var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+escape(value)+expires+"; path=/;";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
	var c = ca[i];
	while (c.charAt(0)==' ') c = c.substring(1,c.length);
	if (c.indexOf(nameEQ) == 0) return unescape(c.substring(nameEQ.length,c.length));
  }
  return null;
}
registerPloneFunction(setStyle);





// jscalendar glue -- Leonard Norrgrd <vinsci@*>
// This function gets called when the user clicks on some date.
function onJsCalendarDateUpdate(cal) {
	var year   = cal.params.input_id_year;
	var month  = cal.params.input_id_month;
	var day	= cal.params.input_id_day;
	// var hour   = cal.params.input_id_hour;
	// var minute = cal.params.input_id_minute;

	// cal.params.inputField.value = cal.date.print('%Y/%m/%d %H:%M'); // doesn't work in Opera, don't use time now
	//cal.params.inputField.value = cal.date.print('%Y/%m/%d'); // doesn't work in Opera
	var daystr = '' + cal.date.getDate();
	if (daystr.length == 1)
		daystr = '0' + daystr;
	var monthstr = '' + (cal.date.getMonth()+1);
	if (monthstr.length == 1)
	monthstr = '0' + monthstr;
	cal.params.inputField.value = '' + cal.date.getFullYear() + '/' + monthstr + '/' + daystr

	year.value  = cal.params.inputField.value.substring(0,4);
	month.value = cal.params.inputField.value.substring(5,7);
	day.value   = cal.params.inputField.value.substring(8,10);
	// hour.value  = cal.params.inputField.value.substring(11,13);
	// minute.value= cal.params.inputField.value.substring(14,16);
}


function showJsCalendar(input_id_anchor, input_id, input_id_year, input_id_month, input_id_day, input_id_hour, input_id_minute, yearStart, yearEnd) {
	// do what jscalendar-x.y.z/calendar-setup.js:Calendar.setup would do
	var input_id_anchor = document.getElementById(input_id_anchor);
	var input_id = document.getElementById(input_id);
	var input_id_year = document.getElementById(input_id_year);
	var input_id_month = document.getElementById(input_id_month);
	var input_id_day = document.getElementById(input_id_day);
	// var input_id_hour = document.getElementById(input_id_hour);
	// var input_id_minute = document.getElementById(input_id_minute);
	var format = 'y/mm/dd';

	var dateEl = input_id;
	var mustCreate = false;
	var cal = window.calendar;

	var params = {
	'range' : [yearStart, yearEnd],
	inputField : input_id,
		input_id_year : input_id_year,
	input_id_month: input_id_month,
	input_id_day  : input_id_day
	// input_id_hour : input_id_hour,
	// input_id_minute: input_id_minute
	};

	function param_default(pname, def) { if (typeof params[pname] == "undefined") { params[pname] = def; } };

	param_default("inputField",	 null);
	param_default("displayArea",	null);
	param_default("button",		 null);
	param_default("eventName",	  "click");
	param_default("ifFormat",	   "%Y/%m/%d");
	param_default("daFormat",	   "%Y/%m/%d");
	param_default("singleClick",	true);
	param_default("disableFunc",	null);
	param_default("dateStatusFunc", params["disableFunc"]); // takes precedence if both are defined
	param_default("mondayFirst",	true);
	param_default("align",		  "Bl");
	param_default("range",		  [1900, 2999]);
	param_default("weekNumbers",	true);
	param_default("flat",		   null);
	param_default("flatCallback",   null);
	param_default("onSelect",	   null);
	param_default("onClose",		null);
	param_default("onUpdate",	   null);
	param_default("date",		   null);
	param_default("showsTime",	  false);
	param_default("timeFormat",	 "24");

	if (!window.calendar) {
	window.calendar = cal = new Calendar(true, //params.mondayFirst,
		 null,
		 onJsCalendarDateUpdate,
		 function(cal) { cal.hide(); });
	cal.time24 = true;
	cal.weekNumbers = true;
	mustCreate = true;
	} else {
	cal.hide();
	}
	cal.setRange(yearStart,yearEnd);
	cal.params = params;
	cal.setDateStatusHandler(null);
	cal.setDateFormat(format);
	if (mustCreate)
	cal.create();
	cal.parseDate(dateEl.value || dateEl.innerHTML);
	cal.refresh();
	cal.showAtElement(input_id_anchor, null);
	return false;
}


// This function updates a hidden date field with the current values of the widgets
function update_date_field(field, year, month, day, hour, minute, ampm)
{
	var field  = document.getElementById(field)
	var date   = document.getElementById(date)
	var year   = document.getElementById(year)
	var month  = document.getElementById(month)
	var day	= document.getElementById(day)
	var hour   = document.getElementById(hour)
	var minute = document.getElementById(minute)
	var ampm   = document.getElementById(ampm)

	if (0 < year.value)
	{
		// Return ISO date string
		// Note: This relies heavily on what date_components_support.py puts into the form.
		field.value = year.value + "-" + month.value + "-" + day.value + " " + hour.value + ":" + minute.value
		// Handle optional AM/PM
		if (ampm && ampm.value)
			field.value = field.value + " " + ampm.value
	} 
	else 
	{
		// Return empty string
		field.value = ''
		// Reset widgets
		month.options[0].selected = 1
		day.options[0].selected = 1
		hour.options[0].selected = 1
		minute.options[0].selected = 1
		if (ampm && ampm.options)
			ampm.options[0].selected = 1
	}
}



function fullscreenMode() {
	if (document.getElementById('portal-top').style.display == 'none') {
		document.getElementById('portal-top').style.display = 'block';
		document.getElementById('portal-column-one').style.display = 'block';
		document.getElementById('portal-column-two').style.display = 'block';
		}
	else {
		document.getElementById('portal-top').style.display = 'none';
		document.getElementById('portal-column-one').style.display = 'none';
		document.getElementById('portal-column-two').style.display = 'none';
	}
}


// and finally : Mike Malloch's fixes for Internet Explorer 5 - 
// These should be considered temporary, as they actually add functionality to IE5, while we just want it to not blurt errormessages... 
//

function hackPush(el){
		this[this.length] = el;
}

function hackPop(){
		var N = this.length - 1, el = this[N];
		this.length = N
		return el;
}

function hackShift(){
		var one = this[0], N = this.length;
		for (var i = 1; i < N; i++){
				this[i-1] = this[i];
		}
		this.length = N-1
		return one;
}

var testPushPop = new Array();
if (testPushPop.push){
}else{
		Array.prototype.push = hackPush
		Array.prototype.pop = hackPop
		Array.prototype.shift =hackShift;
}