/*

This is a Example program to retrieve and display the list of the data. Press the play/reload button on the right of the upper screen, and the program is executed. The program first displayes the subjects that match the keyword completely. The program highlights the list fragments that match the keyword. The keyword is retrieved from the query following "subject=" in the URL, where the keyword must be encoded. Please create a new application by rewriting this program work. The following is the same content in Japanese.

このサンプルプログラムはデータを取得してリスト表示します。画面右上のplay又はreloadボタンを押すとプログラムが実行されます。プログラムはキーワードに完全一致するサブジェクトを最初に表示します。またプログラムはキーワードに部分一致するリスト中の部分をハイライトします。キーワードはURLの中で"subject="に続くクエリーから取得されます。ただし、キーワードはURIエンコードされている必要があります。このプログラムを書き変えて新しいアプリケーションを作成してください。

*/

window.onload = function() {

    var keyword = getParameterFromURL("subject"); // obtain keyword from the URL "?subject="

    var list = ""; // list to be displayed

    // Work loop

    $.each(LinkData.getWorks(), function(workKey, workValue) {

        $("#result").append("<h3>" + LinkData.getWorkName(workValue) + "</h3>");

        // File loop

        $.each(LinkData.getFiles(workValue), function(fileKey, fileValue) {

            var hit = ""; // list of subjects whose URI matches keyword

            var nHit = 0; // number of subjects whose URI matches keyword

            list += "<hr><h4>Viewing file: " + fileValue + "</h4>";

            // Subject loop

            $.each(LinkData.getSubjects(workValue, fileValue), function(subjKey, subjValue) {

                var longitude = null;

                var latitude = null;

                var s = ""; // subject to be displayed

                s += "<hr><a href=\"" + subjValue + "\" target=\"_top\"><span class=\"subject\">" + highlight(decodeURIComponent(subjValue), keyword) + "</span></a>";

                $.each( LinkData.getTriplesBySubject(workValue, fileValue, subjValue), function( tripleKey, tripleValue ) {

                    var prop = tripleValue.property;

                    var obj = tripleValue.object;

                    if ( prop == "http://www.w3.org/2003/01/geo/wgs84_pos#long" ) longitude = obj;// longitude found

                    if ( prop == "http://www.w3.org/2003/01/geo/wgs84_pos#lat" ) latitude = obj;// latitude found

                    if ( obj.indexOf("://www.youtube.com") != -1 && obj.indexOf("v=") != -1 ) { // Insert YouTube Thumbnail

                        videoId = (obj.split("v=")[1]).split("&")[0]; // get video id

                        obj = "<a href=\"" + obj + "\" target=\"_blank\"><span class=\"object\">" + highlight(decodeURIComponent(obj), keyword) + "<br><img src=\"http://img.youtube.com/vi/" + videoId + "/mqdefault.jpg\" alt=\"YouTube video\" /><br></span></a>";

                        }

                        else if ( obj.indexOf("http") == 0 ) {

                            if ((obj.indexOf(".jpg" )>0 || obj.indexOf(".gif" )>0 || obj.indexOf(".png" )>0) || (obj.indexOf(".JPG" )>0 || obj.indexOf(".GIF" )>0 || obj.indexOf(".PNG" )>0)) // insert image

                                 obj = "<a href=\"" + obj + "\" target=\"_blank\"><span class=\"object\">" +shortenURL(obj) + "<br><img src=\"" + obj + "\" alt=\"image\" /><br></span></a>";

                            else

                                obj = "<a href=\"" + obj + "\" target=\"_blank\"><span class=\"object\">" + shortenURL(obj) + "</span></a>"; // Make it clicable if it starts from http

                    }

                    else

                        obj = "<span class=\"object\">" + highlight(obj, keyword) + "</span>";

                    s += "<br><span class=\"propertyName\">" + getLastName(prop) + ":\t</span>" +  obj;

                });

                if ( latitude != null && longitude != null ) s += addLinkToMap( latitude, longitude );

                list += s; //add to the list to be displayed

                if ( decodeURIComponent(subjValue) == keyword ) { // found subject whose URI matches keyword

                    hit += s;

                    nHit++;

                }

                //link to map display if coordinates exist

            });

            if ( nHit > 0 ) {

                if ( nHit == 1 )

                    $("#result").append( "<hr><h4>" + "1 subject hit in file: "+fileValue+"</h4>" );

                else

                    $("#result").append( "<hr><h4>" + nHit + " subjects hit in file: "+fileValue+"</h4>" );

                $("#result").append( hit + "<br><br>" );

            }

        });

    });

    $("#result").append( list );

    window.find(highlight);

};

// Get a parameter value in URL (e.g. ?paramString=value )

function getParameterFromURL( paramString )

{           

    var value = "";

    var topWindow = top.window.location.search;

    if( topWindow ){

        var q = decodeURIComponent(topWindow.substring(1,topWindow.length)).split("&");

        for ( var i = 0; i < q.length; i++ ){

            var r = q[i].split("=");

            if ( r[0] ==  paramString )

                value = r[1];

        }

    }

    return value;

}

// Highlight keyword in the string

function highlight( string, keyword )

{

    if ( keyword.length > 0 ) {

        var ss = string.split(keyword);

        var len = ss.length;

        if ( len > 1 ) {

            string = ss[0];

            for ( i = 1; i < len; i++ )

//              string += "<font color=\"red\">"+keyword+"</font>"+ss[i];

                string += "<span class=\"highlight\">"+keyword+"</span>"+ss[i];

        }

    }

    return string;

}

// get the last name of the string separated with # and /

function getLastName( string )

{

    string = decodeURIComponent(string);

    var sharp = string.split("#");

    var slash = sharp[sharp.length-1].split("/");