// DIA-client javascript functions

function showhideLayers(divId)
{ //v1.0
    var v,divObj;

    if ((divObj=MM_findObj(divId))!=null) {
      v=divObj.style.display;

      if (v == 'none' ) {
        disp = 'block';
      }else {
        disp = 'none';
     }
     divObj.style.display = disp;
 }

}

function showLayer(divId)
{ //v1.0
    var v,divObj;

    if ((divObj=MM_findObj(divId))!=null) {
        v=divObj.style.display;
        disp = 'block';
        divObj.style.display = disp;
    }
}

function hideLayer(divId)
{ //v1.0
    var v,divObj;

    if ((divObj=MM_findObj(divId))!=null) {
        v=divObj.style.display;
        disp = 'none';
        divObj.style.display = disp;
    }
}

function showHideBox(divId)
{
    var box = document.getElementById(divId);
    if (box.className.indexOf("closed") == -1){
        box.className = box.className + " closed";
    }else{
        box.className = box.className.replace("closed","");
    }
    return false;
}

function showHideAbstract(nodeId) {
  var divShort, divFull;

  divShort = 'short-' + nodeId;
  divFull  = 'full-' + nodeId;
  showhideLayers(divShort);
  showhideLayers(divFull);

}

function MM_findObj(n, d)
{ //v4.01
        var p,i,x; if(!d) d=document;
        if((p=n.indexOf("?"))>0&&parent.frames.length)
        {
                d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);
        }
        if(!(x=d[n])&&d.all)
                x=d.all[n];
        for (i=0;!x&&i<d.forms.length;i++)
                x=d.forms[i][n];
                for(i=0;!x&&d.layers&&i<d.layers.length;i++)
                        x=MM_findObj(n,d.layers[i].document);
                if(!x && d.getElementById)
                        x=d.getElementById(n);
        return x;
}

function openWindow ( url, params ){
    var d = new Date();
    var winId = d.getDate() + d.getHours() + d.getMinutes() + d.getSeconds();

    newWindow = window.open(url, winId , params);
    newWindow.focus();
    return;
}

function postHref ( href, target){
    var hrefAction = href.substring(0,href.indexOf('?'));
    var hrefParameters = href.substring(href.indexOf('?')+1);
    var splitedHref = hrefParameters.split("&");
    var qtt = splitedHref.length;
    var splitedHidden = new Array();
    var hiddenName = "";
    var hiddenValue = "";
    var submitForm = document.formHref;

    if ( target == '' || !target ){
        target = 'postHref';
    }

    submitForm.action = hrefAction;
    submitForm.target = target;

    for ( var i = 0; i < qtt; i++ )
    {
        splitedHidden = splitedHref[i].split("=");
        hiddenName = splitedHidden[0];
        splitedHidden[0] = "";
        hiddenValue = splitedHidden.join("=");
        hiddenValue = hiddenValue.replace(/%20/g,' ');
        hiddenValue = hiddenValue.replace(/%2F/g,'/');
        hiddenValue = hiddenValue.replace(/\+/g,' ');

        submitForm.elements[i].name = hiddenName;
        submitForm.elements[i].value = hiddenValue.substring(1);
    }

    //resultWindow = window.open('about:blank',target);
    //resultWindow.focus();

    submitForm.submit();
    // realizar testes de compatibilidade do codigo abaixo
    resultWindow = window.open('',target);
    resultWindow.focus();
}


function openDeCS(){

    lang = document.metasearch.lang.value;
    if (lang == "pt"){ decsLang = "p"; }
    if (lang == "es"){ decsLang = "e"; }
    if (lang == "en"){ decsLang = "i"; }

    decsUrl = "http://decs.bvs.br/cgi-bin/wxis1660.exe/decsserver/?IsisScript=../cgi-bin/decsserver/decsserver.xis&interface_language=" + decsLang + "&previous_page=homepage&previous_task=NULL&task=start";
    decsWindow = window.open(decsUrl, "decs", "height=550,width=750,menubar=yes,toolbar=yes,location=no,resizable=yes,scrollbars=yes,status=no");
    decsWindow.focus();

    return;

}

function showDeCSTerm( id ){

    lang = document.formSearch.lang.value;
    if (lang == "pt"){ decsLang = "p"; }
    if (lang == "es"){ decsLang = "e"; }
    if (lang == "en"){ decsLang = "i"; }

    decsUrl = "http://decs.bvs.br/cgi-bin/wxis1660.exe/decsserver/?IsisScript=../cgi-bin/decsserver/decsserver.xis&interface_language=" + decsLang + "&search_language=" + decsLang + "&previous_page=homepage&task=exact_term&search_exp=mfn=" + id + "#RegisterTop";
    decsWindow = window.open(decsUrl, "decsTerm", "height=450,width=630,menubar=yes,toolbar=yes,location=no,resizable=yes,scrollbars=yes,status=no");
    decsWindow.focus();

    return;
}

function changeLang(lang ){
    form = document.formMain;
    form.lang.value = lang;
    if (home == "true"){
        form.task.value = 'init';
    }
    form.submit();
    return;
}

function changeUrlParameter( parName, parValue ){
    var url = document.URL;
    var parPos = url.indexOf( parName + "=" )

    if( parPos == -1 ) return null;

    var section = url.substring( parPos );
    var eop = section.indexOf("&");

    if( eop == -1 ){
        url = url.replace( section, parName+"="+parValue );
    } else {
        section = section.substring( 0, eop);
        url = url.replace( section, parName+"="+parValue );
    }
    return url;
}

function changeFormParameter( parName, parValue ){

    var form = document.forms[0];
    form.elements[parName].value = parValue;

    form.submit();
}

function applyFilter( query, index ){
    var form = document.forms[0];
    var filter = form.addfilter;

    filter.value = index + ":\"" + query + "\"";
    form.submit();
}

function newSearch( ){
    var form = document.forms[0];
    var backfilter = form.backfilter;
    //clear filter
    backfilter.value = "-1";

    // don't add blank queries
    if( !form.q.value.match(/^\s*$/) )
        addSearchToHistory( form.q.value );

    form.submit();
}

function changeCollection( _col, _site  ){
    var form = document.forms[0];

    form.col.value = _col;
    form.site.value = _site;
    form.backfilter.value = "-1";

    form.submit();
}


function refineByIndex( query, index){
    var form = document.forms[0];

    var formQuery = form.q;
    var formIndex = form.index;
        var formWhere = form.where;
    var backfilter = form.backfilter;

    // set the new query expression
    formQuery.value = "\"" + query + "\"";

    // set the new index
        if (formIndex != null){
            for ( i = 0; i < formIndex.length; i++ ) {
        currentIndex = formIndex[i];
        if (currentIndex.value == index){
            currentIndex.selected = true;
        }
            }
        }
    // clear history filter
    backfilter.value = "-1";
        
        // set where (source) parameter to all
        if (formWhere != null ){
            if ( isArray(formWhere) ){
                formWhere[0].selected = true;
            }else{
                formWhere.value = "";
            }
        }
    form.submit();
}

function detail(id){
    var form = document.forms[0];

    var formQuery = form.q;
    var backfilter = form.backfilter;

    // set the new query expression
    formQuery.value = "detail:" + id;
    // clear history filter
    backfilter.value = "-1";
    form.submit();
}


function backHistoryFilter( pos ){
    var form = document.forms[0];
    var backfilter = form.backfilter;

    backfilter.value = pos;

    form.submit();
}

/* Funções para marcação de ocorrências favoritas (estrelas) */
var xmlhttp = createAjax();

/**
 * Cria instância do XMLHttpRequest
 * @return XMLHttpRequest;
 */
function createAjax(){
    var xmlhttp = null;
    if (window.XMLHttpRequest){
        xmlhttp=new XMLHttpRequest();
    }else if (window.ActiveXObject){
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
    return xmlhttp;
}

/**
 * Faz POST através do AJAX e retorna
 * a reposta do processo caso a resposta
 * exista
 * @param {String} page
 * @param {String} vars
 * @return {String} responseText
 */
function postVars(page,vars){
    if(!xmlhttp){
        xmlhttp = createAjax();
    }
    xmlhttp.open('POST',page,false);
    xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
    xmlhttp.send(vars);
    return xmlhttp.responseText;
}

/**
 * Adiciona ou remove ocorrência dos favoritos
 * @param {Node} element
 * @param {String} id
 */
function markUnmark(element,id){
  var state = element.getAttribute('state');
  var link = document.getElementsByTagName('a')[1];

  if(state == "u"){
    element.src = "./image/common/box_selected.gif";
    element.setAttribute('state','s');
    postVars("bookmark.php","action=a&id="+id);
  }else if(state == "s"){
    element.src = "./image/common/box_unselected.gif";
    element.setAttribute('state','u');
    postVars("bookmark.php","action=r&id="+id);
  }
    refreshElements();
}

function markAll(){
    var ids = '';
    $('div.record').each(
        function(){
            ids += this.id + '|';
            $('div.yourSelectionCheck img',this).each(
                function(){
                    this.src = './image/common/box_selected.gif';
                    this.state = 's';
                }
            )
        });
    postVars("bookmark.php","action=a&id="+ids);
    refreshElements();
}

function unmarkAll(){
    var ids = '';
    $('div.record').each(
        function(){
            ids += this.id + '|';
            $('div.yourSelectionCheck img',this).each(
                function(){
                    this.src = './image/common/box_unselected.gif';
                    this.state = 'u';
                }
            )
        });
    postVars("bookmark.php","action=r&id="+ids);
    refreshElements();
}

/**
 * Altera elementos conforme o usuário
 * seleciona documento.
 */
function refreshElements(){
    window.listSize = parseInt( postVars("bookmark.php","action=s") );
    var selectionListOptions = document.getElementById('yourSelection').getElementsByTagName('ul')[0];

    if( listSize == 0 ){
        selectionListOptions.style.display = "none";
    }else{
        selectionListOptions.style.display = "block";
    }
    countBookmarksTo("sizeOfBookmarks_0",listSize);
    countBookmarksTo("sizeOfBookmarks_1",listSize);
    countBookmarksTo("sizeOfBookmarks_2",listSize);
}

/**
 * Lê os favoritos de uma sessão PHP e
 * "acende" as respectivas estrelas
 */
function recoverBookmarks(){
    var bookmarks = postVars("bookmark.php","action=l");
    bookmarks = bookmarks.split(';');

    for(var i = 0; i < bookmarks.length; i++){
        var register = document.getElementById(bookmarks[i]);
        if(register){
            var divs = register.getElementsByTagName('div');
            for(var j = 0; j < divs.length; j++){
                if( divs[j].className == "yourSelectionCheck" ){
                    var image = divs[j].getElementsByTagName('img')[0];
                    image.src = "./image/common/box_selected.gif";
                    image.setAttribute('state','s');
                }
            }
        }
    }
    refreshElements();
}

/**
 * Faz uma pesquisa usando os ids dos
 * favoritos da sessão PHP e mostra o
 * resultado para o usuário.
 */
function showBookmarks(){
    var form = document.forms[0];
    var input = form.getElementsByTagName('input');
    var query = form.q;
    var bookmarks = postVars("bookmark.php","action=l");
    var searchStrategy = "";
    bookmarks = bookmarks.split(';');

    // remove filtros de outras pesquisas
    for( var i = 0; i < input.length; i++){
        if( input[i].name.search('filter') != -1 ){
            input[i].value = "";
        }
    }

    if(bookmarks){
        searchStrategy = "\""+bookmarks[0]+"\"";
        for(i = 1; i < bookmarks.length; i++){
            searchStrategy += " OR \""+ bookmarks[i]+"\"";
        }

        query.value = "+id:(" + searchStrategy + ")";
        form.submit();
        query.value = "";
    }
}

function clearBookmarks(){
    postVars("bookmark.php","action=c");
}

function countBookmarksTo(id,listSize){
    var element = document.getElementById(id);
    element.innerHTML = listSize;
}

function cookiesEnabled(){
    document.cookie = "CookieTest=Enabled";
    var allcookies = document.cookie;
    var pos = allcookies.indexOf("CookieTest=");
    if (pos != -1) {
        var start = pos + 11;
        var end = allcookies.indexOf(";", start);
        if (end == -1) end = allcookies.length;
        var value = allcookies.substring(start,end);
        value = unescape(value);

        return value == "Enabled";
    }
    return false;
}

/**
 * Esconde elementos de uma determinada classe
 * @param {String} tagName
 * @param {String} className
 */
function hideClass(tagName,className){
    var elements = document.getElementsByTagName(tagName);

    for(var i = 0; i < elements.length; i++){
        if( elements[i].className == className ){
            elements[i].style.display = "none";
        }
    }
}

/**
 * Notifica o usuário sobre a impossibilidade
 * de se trabalhar com "Bookmarks"
 */
function alertBookmarkUnavailable(){
    var bb = document.getElementById('bookmark_button');
    var text = document.createTextNode("Cookies desabilitados!");
    bb.appendChild(text);
    bb.style.border = "1px solid #FF0000";
    bb.style.backgroundColor = "#FFEEEE";
    bb.style.textAlign = "center";
}

/* Funções para o searchHistory */

/**
 * Adiciona termo pesquisado
 * lista de termos presente na
 * sessão
 * @param {String} term
 */
function addSearchToHistory(term){
    term = escape(term);
    postVars("searchHistory.php","action=a&term="+term);
}

function removeSearchTerm(term,node){
    var shl = document.getElementById('searchHistoryList');
    var counter = document.getElementById('sizeOfHistorySearch');
    postVars("searchHistory.php","action=r&term="+term);
    shl.removeChild(node);
    counter.innerHTML = parseInt(counter.innerHTML) - 1;
    if(counter.innerHTML == "0"){
        shl.innerHTML = postVars("searchHistory.php","action=l");
    }
}

function eventPosition(e){
    var coord = [];

    if (!e) e = window.event;

    if (e.pageX || e.pageY){
        coord[0] = e.pageX;
        coord[1] = e.pageY;
    }else if (e.clientX || e.clientY){
        coord[0] = e.clientX + document.body.scrollLeft
            + document.documentElement.scrollLeft;
        coord[1] = e.clientY + document.body.scrollTop
            + document.documentElement.scrollTop;
    }
    return coord;
}

function chooseOperatorToSearch(sTerm,e){
    sTerm = unescape(sTerm);
    var coord;
    var form = document.forms[0];
    var operatorBox = document.getElementById("searchHistoryOperators");

    coord = eventPosition(e);
    if( form.q.value == "" ){
        form.q.value = sTerm;
    }else{
        operatorBox.style.left = coord[0]+"px";
        operatorBox.style.top = coord[1]+"px";
        operatorBox.style.display = "block";
        operatorBox.term = sTerm;
    }
}

/**
 * Adiciona um termo do histórico
 * de pesquisa no formulário de
 * pesquisa.
 * @param {String} operator
 */
function addTermToSearch(operator){
    var term = document.getElementById('searchHistoryOperators').term;
    var form = document.forms[0];

    // enclose term from history with parenthesis
    if(term.search(" ") > -1 )
        if(!term.match(/\)$/))
            term = "(" + term + ")";

    // enclose term from input with parenthesis
    if(form.q.value.search(" ") > -1)
        if(!form.q.value.match(/\)$/))
            if(!form.q.value.match(/\s+(AND|OR)\s+/))
                form.q.value = "(" + form.q.value + ")";

    // add to input field
    form.q.value = form.q.value + " " + operator + " " + term;
    document.getElementById('searchHistoryOperators').style.display = "none";
}

function searchFromHistory(term){
    var form = document.forms[0];
    form.q.value = term;
    form.submit();
}

function enableDisableForm(form){
    if( !window.listSize && !form.q.value && !document.searchForm['filter_chain[]']){
        for(var i=0;i<form.length;i++){
            form[i].disabled = true;
        }
    }else{
        for(i=0;i<form.length;i++){
            form[i].disabled = false;
        }
        if(!window.listSize){
            form.option[0].disabled = true;
            form.option[1].checked = true;
        }
        if(!form.q.value && !document.searchForm['filter_chain[]']){
            form.option[1].disabled = true;
            form.option[2].disabled = true;
            form.option[1].checked = false;
            form.option[2].checked = false;
        }
    }
}

function sendMail(form){
    var sendingMail = document.getElementById('sendingMail');
    var mailSent = document.getElementById('mailSent');
    var mailError = document.getElementById('mailError');

    var error = false;
    var vars = '';
    for(var i=0;i<form.length;i++){
        if (form[i].type == 'radio') {
            if(form[i].checked == true)
                vars += '&'+form[i].name+'='+ form[i].value;
        } else if(form[i].type == 'text'){
            vars += '&'+form[i].name+'=';
            if (form[i].value) {
                vars += form[i].value;
                form[i].style.backgroundColor = '#FFF';
            }else {
                error = true;
                form[i].style.backgroundColor = '#FAA';
            }
        } else {
            vars += '&'+form[i].name+'='+form[i].value;
        }
    }
    // add filter_chain to query 
    if(document.searchForm['filter_chain[]'] != null){
        if(document.searchForm['filter_chain[]'].length == undefined){
            vars += '&filter_chain[]=' + document.searchForm['filter_chain[]'].value;
        }else{
            for(i=0;document.searchForm['filter_chain[]'].length;i++){
                vars += '&filter_chain[]=' + document.searchForm['filter_chain[]'][i].value;
            }
        }
    }
    
    //alert(vars);
    
    if (!error) {
        mailSent.style.display = 'none';
        mailError.style.display = 'none';
        sendingMail.style.display = 'block';

        setTimeout(function(){
            var status = postVars('mail.php', vars);
            sendingMail.style.display = 'none';
            if (status.substring(0, 5) == "Error")
                mailError.style.display = 'block';
            else{
                setTimeout(function(){
                    mailSent.style.display = 'none';
                    sendingMail.style.display = 'none';
                } ,5000);
                mailSent.style.display = 'block';
            }
        }, 1000);
        //return true;
    }
    return false;
}

/**
 * Recupera o histórico de pesquisa
 * contido da sessão do usuário.
 */
function retrieveSearchTerms(){
    var searchHistoryList = document.getElementById("searchHistoryList");
    var sizeOfHistorySearch = document.getElementById("sizeOfHistorySearch");
    searchHistoryList.innerHTML = postVars("searchHistory.php","action=l");
    sizeOfHistorySearch.innerHTML = postVars("searchHistory.php","action=s");
}

function expandRetractResults(action){
    var refine_facet = document.getElementById('refine_facet');
    var box;
    if(action == "expand"){
        for( var i = 0; i < refine_facet.childNodes.length; i++){
            box = refine_facet.childNodes[i];
            if(box.tagName == "DIV"){
                if (box.className.indexOf("closed") > -1){
                    box.className = box.className.replace("closed","");
                }
            }
        }
    }else if(action == "retract"){
        for( i = 0; i < refine_facet.childNodes.length; i++){
            box = refine_facet.childNodes[i];
            if(box.tagName == "DIV"){
                if (box.className.indexOf("closed") == -1){
                    box.className = box.className + " closed";
                }
            }
        }
    }
}

function showInfo(msg,node,e){
    msg = unescape(msg);
    var coord = eventPosition(e);
    var div = document.createElement("DIV");

    coord[0] -= 10;
    coord[1] -= 10;

    div.innerHTML = msg;
    div.className = "popup altpopup";
    div.style.left = coord[0]+"px";
    div.style.top = coord[1]+"px";
    div.onmouseout = function(){
        var parent = this.parentNode;
        parent.removeChild(this);
    };

    node.appendChild(div);
}

function showPrintDialog(){
    var version = Math.round(parseFloat(navigator.appVersion) * 1000);
    if (version >= 4000){
        setTimeout("window.print()",1000);
    }
}

function printMode(printOption){
    var form = document.searchForm;
    var printMode = form.printMode;
    var from = form.from;
    var count = form.count;

    printMode.value = "true";
    from.value = form.pageFrom.value;
    if (printOption){
        for( i = 0; i < printOption.length; i++ ){
            if( printOption[i].checked == true ){
               var printValue = printOption[i].value;
            }
        }
        if (printValue == 'selection'){
            showBookmarks();
        }else if( printValue == 'all_references'){
            from.value = "1";
            count.value = "300";
        }
    }

    form.submit();

    //reset form values
    printMode.value = "";
    from.value = "";
}

function exportMode(exportOption){
    var form = document.searchForm;
    var exportMode = form.output;
    var from = form.from;
    var count = form.count;

    exportMode.value = "ris";
    from.value = form.pageFrom.value;
    if (exportOption){
        for( i = 0; i < exportOption.length; i++ ){
            if( exportOption[i].checked == true ){
               var exportValue = exportOption[i].value;
            }
        }
        if (exportValue == 'selection'){
            showBookmarks();
        }else if( exportValue == 'all_references'){
            from.value = "1";
            count.value = "300";
        }
    }

    form.submit();

    //reset form values
    exportMode.value = "";
    from.value = "";
}

function showMoreClusterItems(field, limit){
    var form = document.searchForm;
    form.action = form.action + "#" + field;
    var fb = form.fb;

    fb.value = field + ":" + limit;
    form.submit();

    //reset form values
    fb.value = "";
}

function changeOrderBy(field){
    var form = document.searchForm;
    var sort = form.sort;

    var fieldIndex = field.selectedIndex;


    sort.value = field[fieldIndex].value;
    form.submit();

    //reset form value
    sort.value = "";
}

function changeDisplayFormat(field){
    var form = document.searchForm;
    var fmt = form.fmt;

    var fieldIndex = field.selectedIndex;

    fmt.value = field[fieldIndex].value;
    form.submit();

    //reset form value
    fmt.value = "";
}


/**
 * Mostra janela com grafico do cluster selecionado
 * @param {Node} obj
 * @param {String} titulo
 * @param {String} id
 */
function showChart(obj, titulo, id){
    var regex = /\(\d+\)/;
    var params= "";

    var grupo = document.getElementById(id +'_set');
    var lista = grupo.getElementsByTagName('li');

    for (i = 0; i < lista.length; i++){
        cluster = lista[i].innerHTML;
        clusterLabel = lista[i].getElementsByTagName('a')[0].innerHTML;

        ma = regex.exec(cluster);
        if (ma != null) {
            clusterTotal = ma[0].replace(/[()]/g,'');
            params += "&l[]=" + clusterLabel + "&d[]=" + clusterTotal;
        }
    }
    // caso seja o cluster de ano passa parametro para realizar sort
    if (id == 'year_cluster'){
        params += "&sort=true";
    }
    url = "chart.php?title=" + titulo + params + "&KeepThis=true&TB_iframe=true&height=480&width=650";
    obj.href = url;
}

function clearDefault(id, newclass) {
    identity=document.getElementById(id);
    identity.className=newclass;
}

function isArray(o){
        return(typeof(o.length)=="undefined")?false:true;
}

function deleteStar(object) {
  if (object.value == "*") {
    object.value = "";
  }
}