/*
$Header: /u01/app/cvs/src_wds/projects/WDS/htdocs/iws/WebRoot/scripts/search/SearchHelper.js,v 1.46 2009/06/12 01:32:27 mlevin Exp $
*/
function setGlobalFlag(dropDownObj) {
    document.searchForm.go.value = globalOnly;
}
function submitForm() {
    if (checkValues()) {
        document.searchForm.submit();
    }   
        return false;
    }
function submitAdvForm() {
    if (advCheckValues()) {
        document.searchForm.submit();
    }
        return false;
}
function toggleSection(sectionId) {
    var section = document.getElementById("a" + sectionId);
    var linkObj = document.getElementById("l" + sectionId);
    if (section.style.display == "none") {
        setExpanded(section, linkObj, sectionId, true);
    } else {
        setExpanded(section, linkObj, sectionId, false);
    }
}
function setExpanded(section, linkObj, sectionId, expanded) {
    linkObj.innerHTML = (expanded ? "Hide" : "Show") + " Results";
    section.style.display = expanded ? "block" : "none";
    setLinks(sectionId, expanded);
}
function setLinks(sectionId, expanded) {
    var navLinks = document.getElementsByTagName("a");
    for (var i = 0; i < navLinks.length; i++) {
        var obj = navLinks[i];
        if (obj.className == "navLink") {
            var regex = new RegExp("a=" + sectionId + "\\|[ce]");
            var replacement = "a=" + sectionId + "|" + (expanded ? "e" : "c");
            obj.href = obj.href.replace(regex, replacement);
        }
    }
}
function setGlobal(newVal) {
    var regex = new RegExp("g=" + !newVal);
    var replacement = "g=" + newVal;
    window.location.href = window.location.href.replace(regex, replacement);
}

function toggleExpand() {
    if (allExpanded) {
        collapseAll();
        allExpanded = false;
        document.getElementById("toggleExpandLink").innerHTML = "Expand All Sections";
    } else {
        expandAll();
        allExpanded = true;
        document.getElementById("toggleExpandLink").innerHTML = "Collapse All Sections";
    }
    setCookie("allExpanded", allExpanded ? 1 : 0);
}
function toggleDescriptions() {
    if (descriptionsShown) {
        descriptionsShown = false;
        document.getElementById("toggleDescriptionsLink").innerHTML = "Show Descriptions";
    } else {
        descriptionsShown = true;
        document.getElementById("toggleDescriptionsLink").innerHTML = "Hide Descriptions";
    }
    setCookie("descriptionsShown", descriptionsShown ? 1 : 0);
    var paragraphs = document.getElementsByTagName("p");
    for (var i = 0; i < paragraphs.length; i++) {
        var obj = paragraphs[i];
        if (obj.className == "short_desc") {
            obj.style.display = descriptionsShown ? "block" : "none";
        }
    }
}
function getParameterValue(urlVarName) {
    //divide the URL in half at the '?'
    var urlHalves = String(document.location).split("?");
    var urlVarValue = "";
    if (urlHalves[1]) {
        //load all the name/value pairs into an array
        var urlVars = urlHalves[1].split("&");
        //loop over the list, and find the specified url variable
        for (i = 0; i <= (urlVars.length); i++) {
            if (urlVars[i]) {
                //load the name/value pair into an array
                var urlVarPair = urlVars[i].split("=");
                if (urlVarPair[0] && urlVarPair[0] == urlVarName) {
                    //I found a variable that matches, load it's value into the return variable
                    urlVarValue = urlVarPair[1];
                }
            }
        }
    }
    return urlVarValue;
}
function getParameterValues(urlVarName) {
    //divide the URL in half at the '?'
    var urlHalves = String(document.location).split("?");
    var urlVarValue = "";
    if (urlHalves[1]) {
        //load all the name/value pairs into an array
        var urlVars = urlHalves[1].split("&");
        //loop over the list, and find the specified url variable
        for (i = 0; i <= (urlVars.length); i++) {
            if (urlVars[i]) {
                //load the name/value pair into an array
                var urlVarPair = urlVars[i].split("=");
                if (urlVarPair[0] && urlVarPair[0] == urlVarName) {
                    //I found a variable that matches, load it's value into the return variable
                    if (urlVarPair[1].trim() != "") {
                        urlVarValue = urlVarPair[1].replace("\\|.*$", "") + "-" + urlVarValue;
                    }
                }
            }
        }
    }
    return urlVarValue;
}
function toggleCountryRegion() {
    var regionDiv = document.getElementById("regionLayer");
    var countryDiv = document.getElementById("countryLayer");
    if (document.searchForm.rc[0].checked) { //region selected
        regionDiv.style.display = "block";
        countryDiv.style.display = "none";
        document.searchForm.c.selectedIndex = 0;
    } else {
        regionDiv.style.display = "none";
        countryDiv.style.display = "block";
        document.searchForm.r.selectedIndex = 0;
    }
}
function checkValues() {
    document.searchForm.g.value=true;
    var noRegion = document.searchForm.rc[0].checked && document.searchForm.r.selectedIndex == 0;
    var noCountry = document.searchForm.rc[1].checked && document.searchForm.c.selectedIndex == 0;
    var noKeywords = document.searchForm.k.value.trim() == "" || hasOnlyStopWords(document.searchForm.k.value);
    var noSchool = document.searchForm.s.selectedIndex == 0;
    var noActivity = document.searchForm.a.selectedIndex == 0;
    var coursesSelected = document.searchForm.a.selectedIndex == 1;
    var researchSelected = document.searchForm.a.selectedIndex == 9;
    var allDefaults = (noRegion || noCountry) && noKeywords && noSchool && noActivity;
    var tooMany = (noRegion || noCountry) && noKeywords && noSchool && (coursesSelected || researchSelected);
    var facPlusGlobal = document.searchForm.a.selectedIndex == 5 && document.searchForm.rc[0].checked && document.searchForm.r.options[9].selected;  
    if(document.searchForm.rc[0].checked && document.searchForm.r.selectedIndex == 9){
       document.searchForm.go.value=true;
    }   
    if (document.searchForm.rc[0].checked && (document.searchForm.r.options[9].selected || document.searchForm.r.options[0].selected)) {
        document.searchForm.g.value=true;
    } else {
        document.searchForm.g.value=false;
    }
    if (document.searchForm.rc[1].checked && document.searchForm.c.selectedIndex != 0) {
        document.searchForm.g.value=false;
    } else if (document.searchForm.rc[1].checked && document.searchForm.c.selectedIndex == 0) {
        document.searchForm.g.value=true;
    }
    if (allDefaults || tooMany || facPlusGlobal) {
        alert("The search you have requested will return too many results. Please refine your search.");
        return false;
    }
    return true;
}
function advCheckValues() {
    var i, isActivityType;
    isActivityType = 0;
    var noRegion = document.searchForm.rc[0].checked && (document.searchForm.r.value.trim() == "" || document.searchForm.r.selectedIndex == -1);
    var noCountry = document.searchForm.rc[1].checked && (document.searchForm.c.value.trim() == "" || document.searchForm.c.selectedIndex == -1);
    var noKeywords = document.searchForm.k.value.trim() == "" || hasOnlyStopWords(document.searchForm.k.value);
    var noSchool = document.searchForm.s.selectedIndex == -1 || document.searchForm.s.value.trim() == "";
    var facPlusGlobal = document.searchForm.a[5].checked && document.searchForm.rc[0].checked && document.searchForm.r.options[9].selected;  
    var regionCounter = 0;
    var allRegions = false;
    var countryCounter = 0;
    var allCountries = false;
    var globalRegionSelected = false;
    for (var i = 1; i < document.searchForm.r.length; i++) {
        if (document.searchForm.r.options[i].selected) {
            regionCounter++;
            if(i == 9){
              globalRegionSelected = true;
            }  
        }
    }
    if ((regionCounter == document.searchForm.r.length - 1 || regionCounter == 0) && document.searchForm.rc[0].checked) {
        allRegions = true;
    }
    
    if (document.searchForm.rc[0].checked) {
        if (allRegions || globalRegionSelected) {
            document.searchForm.g.value = true;
        } else {
            document.searchForm.g.value = false;
        }
        if (regionCounter == 1 && globalRegionSelected) {
            document.searchForm.go.value = true;
        } else {
            document.searchForm.go.value = false;
        }
    }
    if (document.searchForm.rc[1].checked && document.searchForm.c.selectedIndex != 0) {
        document.searchForm.g.value = false;
    } else if (document.searchForm.rc[1].checked && document.searchForm.c.selectedIndex == 0) {
        document.searchForm.g.value=true;
    }
    
    for (var i = 1; i < document.searchForm.c.length; i++) {
        if (document.searchForm.c.options[i].selected) {
            countryCounter++;
        }
    }
    if (countryCounter == document.searchForm.c.length - 1) {
        allCountries = true;
    }   
    
    
    for (i = 0; i < 11; ++i) {
        if (document.searchForm.a[i].checked) {
            isActivityType++;
        }
    }
    var facPlusGlobal = document.searchForm.a[4].checked && isActivityType == 1 && document.searchForm.rc[0].checked && document.searchForm.r.options[9].selected;  
    var noActivity = isActivityType == 0;
    var coursesSelected = document.searchForm.a[0].checked == true;
    var researchSelected = document.searchForm.a[8].checked == true;
    var coursesOnly = coursesSelected
        && isActivityType == 1
        && (document.searchForm.r.value.trim() == "" || document.searchForm.r.selectedIndex == -1)
        && (document.searchForm.c.value.trim() == "" || document.searchForm.c.selectedIndex == -1)
        && noKeywords
        && noSchool;
    var allDefaults = (noRegion || noCountry) && noKeywords && noSchool && (isActivityType > 10) && !globalRegionSelected;
    if (allDefaults) {
        alert("The search you have requested will return too many results. Please limit your search.");
        return false;
    }
    //var tooMany = (noRegion || noCountry || allRegions || allCountries) && noKeywords && noSchool && (coursesSelected || researchSelected);
    // now allow global course search
    var tooMany = (noRegion || noCountry || allRegions || allCountries) && noKeywords && noSchool && researchSelected && !globalRegionSelected;
    if (tooMany || facPlusGlobal || coursesOnly) {
        alert("The search you have requested will return too many results. Please refine your search.");
        return false;
    }
    if (!checkMultiList(document.searchForm.c)) {
        return false;
    }
    return true;
}
function hasOnlyStopWords(keywordString) {
    var keywords = keywordString.trim().toLowerCase().replace(/[^a-z ]/g, "").split(" ");
    keywords.removeItems(stopWords);
    return keywords.length == 0;
}
// http://www.somacon.com/p355.php
String.prototype.trim = function () {
    return this.replace(/^\s+|\s+$/g, "");
};
// http://webdevel.blogspot.com/2003/07/javascript-remove-items-from-array.html
Array.prototype.removeItems = function (itemsToRemove) {
    if (!/Array/.test(itemsToRemove.constructor)) {
        itemsToRemove = [itemsToRemove];
    }
    var j;
    for (var i = 0; i < itemsToRemove.length; i++) {
        j = 0;
        while (j < this.length) {
            if (this[j] == itemsToRemove[i]) {
                this.splice(j, 1);
            } else {
                j++;
            }
        }
    }
};
function prefillBasicSearch() {
    var region_country = getParameterValue("rc");
    if (region_country.toLowerCase() == "region") {
        document.searchForm.rc[0].checked = true;
        toggleCountryRegion();
        var region = getParameterValue("r");
        for (var i = 0; i < document.searchForm.r.length; i++) {
            if (document.searchForm.r[i].value.toUpperCase() == region.toUpperCase()) {
                document.searchForm.r.selectedIndex = i;
            }
        }
    } else {
        if (region_country.toLowerCase() == "country") {
            document.searchForm.rc[1].checked = true;
            toggleCountryRegion();
            var country = getParameterValue("c");
            for (var i = 0; i < document.searchForm.c.length; i++) {
                if (document.searchForm.c[i].value.toUpperCase() == country.toUpperCase()) {
                    document.searchForm.c.selectedIndex = i;
                }
            }
        }
    }
    var activity = getParameterValue("a");
    if (activity != null) {
        for (var i = 0; i < document.searchForm.a.length; i++) {
            if (document.searchForm.a[i].value == activity) {
                document.searchForm.a.selectedIndex = i;
            }
        }
    }
    var school = getParameterValue("s");
    if (school != null) {
        for (var i = 0; i < document.searchForm.s.length; i++) {
            if (document.searchForm.s[i].value.toUpperCase() == school.toUpperCase()) {
                document.searchForm.s.selectedIndex = i;
            }
        }
    }
}
if (!Array.prototype.contains) {
    Array.prototype.contains = function (obj) {
        var len = this.length;
        for (var i = 0; i < len; i++) {
            if (this[i] === obj) {
                return true;
            }
        }
        return false;
    };
}
function prefillAdvanceSearch() {
    var regionArray = getParameterValues("r").split("-");
    var countryArray = getParameterValues("c").split("-");
    if(regionArray == "" && countryArray == "") {
        //initial value
        document.searchForm.r.options[0].selected = true;
    }   
    if (regionArray != null && regionArray.length > 0 && regionArray != "") {
        document.searchForm.rc[0].checked = true;
        toggleCountryRegion();
        if (regionArray == null || regionArray.length == 0 || regionArray == "") {
            document.searchForm.r.options[0].selected = true;
        }
        for (var i = 1; i < document.searchForm.r.length; i++) {
            if (i == 9) {
                if (getParameterValues("g") == "true" || getParameterValues("go") == "true") {
                    document.searchForm.r.options[9].selected = true;
                } else {
                    document.searchForm.r.options[9].selected = false; 
                }
            } else {
                if (regionArray.contains(document.searchForm.r[i].value)) {
                    document.searchForm.r.options[i].selected = true;
                }
            }
        }
    } else {
        if (countryArray != null && countryArray.length > 0 && countryArray != "") {
            var countryArray = getParameterValues("c").split("-");
            document.searchForm.rc[1].checked = true;
            toggleCountryRegion();
            if (countryArray == null || countryArray.length == 0 || countryArray == "") {
                document.searchForm.c.options[0].selected = true;
            }
            for (var i = 1; i < document.searchForm.c.length; i++) {
                if (countryArray.contains(document.searchForm.c[i].value)) {
                    document.searchForm.c.options[i].selected = true;
                }
            }
        }
    }
    var activityArray = getParameterValues("a").split("-");
    var parsedActivityArray = new Array();
    var regex = new RegExp("\\|.*$");
    for (var i = 0; i < activityArray.length; i++) {
        var activityType = activityArray[i];
        if (activityType != null) {
            activityType = activityType.replace(regex, "");
            parsedActivityArray.push(activityType);
        }
    }
    var isActivityArrayEmpty = false;
    if (parsedActivityArray == null || parsedActivityArray.length == 0 || parsedActivityArray == "") {
        isActivityArrayEmpty = true;
    }
    for (var i = 0; i < document.searchForm.a.length; i++) {
        if (parsedActivityArray.contains(document.searchForm.a[i].value) || isActivityArrayEmpty) {
            document.searchForm.a[i].checked = true;
        }
    }
    var schoolArray = getParameterValues("s").split("-");
    if (schoolArray == null || schoolArray.length == 0 || schoolArray == "") {
        document.searchForm.s.options[0].selected = true;
    }
    for (var i = 1; i < document.searchForm.s.length; i++) {
        if (schoolArray.contains(document.searchForm.s[i].value)) {
            document.searchForm.s.options[i].selected = true;
        }
    }
    if (getParameterValues("g") == "true" || getParameterValues("go") == "true") {
        document.searchForm.r.options[9].selected = true;
    } else {
        document.searchForm.r.options[9].selected = false; 
    }
}
function prefillAddUpdateSearch() {
    document.searchForm.r.options[0].selected = true;
    for (var i = 1; i < document.searchForm.a.length; i++) {
        document.searchForm.a[i].checked = true;
    }
    document.searchForm.a[0].checked = false;
    document.searchForm.a[4].checked = false;
    document.searchForm.a[0].disabled = true;
    document.searchForm.a[4].disabled = true;
    document.searchForm.s.options[0].selected = true;
}
// from http://techpatterns.com/downloads/javascript_cookies.php
function setCookie(name, value, expires, path, domain, secure) {
    var today = new Date();
    today.setTime(today.getTime());
    if (expires) {
        expires = expires * 1000 * 60 * 60 * 24;
    }
    var expires_date = new Date(today.getTime() + (expires));
    document.cookie = name + "=" + escape(value) + ((expires) ? ";expires=" + expires_date.toGMTString() : "") + ((path) ? ";path=" + path : "") + ((domain) ? ";domain=" + domain : "") + ((secure) ? ";secure" : "");
}
// from http://techpatterns.com/downloads/javascript_cookies.php
function getCookie(check_name) {
    var a_all_cookies = document.cookie.split(";");
    var a_temp_cookie = "";
    var cookie_name = "";
    var cookie_value = "";
    var b_cookie_found = false;
    for (i = 0; i < a_all_cookies.length; i++) {
        a_temp_cookie = a_all_cookies[i].split("=");
        cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, "");
        if (cookie_name == check_name) {
            b_cookie_found = true;
            if (a_temp_cookie.length > 1) {
                cookie_value = unescape(a_temp_cookie[1].replace(/^\s+|\s+$/g, ""));
            }
            return cookie_value;
            break;
        }
        a_temp_cookie = null;
        cookie_name = "";
    }
    if (!b_cookie_found) {
        return null;
    }
}
function checkMultiList(mList) {
    var counter = 0;
    for (i = 0; i < mList.length; i++) {
        if (mList[i].selected == true) {
            counter++;
        }
    }
   // If the counter is greater than 10, display an alert message.
    if (counter > 10) {
        if (mList.id == "c") {
            alert("Please do not select more than 10 countries.");
        }
        return false;
    }
    return true;
}
function chkSchoolList() {
    var counter = 0;
    for (var i = 1; i < document.searchForm.s.length; i++) {
        if (document.searchForm.s.options[i].selected) {
            counter++;
        }
    }
    if (counter == document.searchForm.s.length - 1) {
        document.searchForm.s.options[0].selected = true;
    } else if (counter == 0) {
        // leave as is
    } else {
        document.searchForm.s.options[0].selected = false;
    }
}