www/masterkey/js/client.js

   1 /*
   2 ** $Id: client.js,v 1.5 2007-03-28 15:20:53 jakub Exp $
   3 ** MasterKey - pazpar2's javascript client .
   4 */
   5
   6 /* start with creating pz2 object and passing it event handlers*/
   7 var my_paz = new pz2( { "onshow": my_onshow,
   8                     //"showtime": 1000,
   9                     //"onstat": my_onstat,
  10                     "onterm": my_onterm,
  11                     "termlist": "subject,author,xtargets,date",
  12                     //"onbytarget": my_onbytarget,
  13                     "onrecord": my_onrecord } );
  14
  15 /* some state variable */
  16 var currentSort = 'relevance';
  17 var currentResultsPerPage = 20;
  18 var currentQuery = null;
  19 var currentPage = 0;
  20
  21 var currentDetailedId = null;
  22 var currentDetailedData = null;
  23
  24 var termStartup = true;
  25 var advancedOn = false;
  26
  27 /* wait until the DOM is ready and register basic handlers */
  28 $(document).ready( function() {
  29                     document.search.onsubmit = onFormSubmitEventHandler;
  30
  31                     document.search.query.value = '';
  32                     document.search.title.value = '';
  33                     document.search.author.value = '';
  34                     document.search.subject.value = '';
  35                     document.search.date.value = '';
  36
  37                     $('#advanced').click(toggleAdvanced);
  38
  39                     $('#sort').change(function(){
  40                         currentSort = this.value;
  41                         currentPage = 0;
  42                         my_paz.show(0, currentResultsPerPage, currentSort);
  43                     });
  44
  45                     $('#perpage').change(function(){
  46                         currentResultsPerPage = this.value;
  47                         currentPage = 0;
  48                         my_paz.show(0, currentResultsPerPage, currentSort);
  49                     });
  50 } );
  51
  52 /* search button event handler */
  53 function onFormSubmitEventHandler() {
  54     if(!loadQueryFromForm())
  55         return false;
  56     my_paz.search(currentQuery, currentResultsPerPage, currentSort);
  57     $('div.content').show();
  58     $("div.leftbar").show();
  59     return false;
  60 }
  61
  62 /*
  63 *********************************************************************************
  64 ** pz2 Event Handlers ***********************************************************
  65 *********************************************************************************
  66 */
  67
  68 /*
  69 ** data.hits["md-title"], data.hits["md-author"], data.hits.recid, data.hits.count
  70 ** data.activeclients, data.merged, data.total, data.start, data.num
  71 */
  72 function my_onshow(data)
  73 {
  74     var recsBody = $('div.records');
  75     recsBody.empty();
  76
  77     for (var i = 0; i < data.hits.length; i++) {
  78         var title = data.hits[i]["md-title"] || 'N/A';
  79         var author = data.hits[i]["md-author"] || '';
  80         var id = data.hits[i].recid;
  81         var count = data.hits[i].count || 1;
  82
  83         var recBody = $('<div class="record" id="rec_'+id+'"></div>');
  84         var aTitle = $('<a class="recTitle">'+title+'</a>').appendTo(recBody);
  85         aTitle.click(function(){
  86                         var clickedId = this.parentNode.id.split('_')[1];
  87                         if(currentDetailedId == clickedId){
  88                             $(this.parentNode.lastChild).remove();
  89                             currentDetailedId = null;
  90                             return;
  91                         } else if (currentDetailedId != null) {
  92                             $('#rec_'+currentDetailedId).children('.detail').remove();
  93                         }
  94                         currentDetailedId = clickedId;
  95                         my_paz.record(currentDetailedId);
  96                         });
  97
  98         if( author )
  99             recBody.append('<i> by </i>');
 100             $('<a name="author" class="recAuthor">'+author+'</a>\n').click(function(){ refine(this.name, this.firstChild.nodeValue) }).appendTo(recBody);
 101
 102         if( currentDetailedId == id ){
 103             var detailBox = $('<div class="detail"></div>').appendTo(recBody);
 104             drawDetailedRec(detailBox);
 105         }
 106
 107         recsBody.append('<div class="resultNum">'+(currentPage*currentResultsPerPage+i+1)+'.</a>');
 108         recsBody.append(recBody);
 109     }
 110     drawPager(data.merged, data.total);
 111 }
 112
 113 /*
 114 ** data.activeclients, data.hits, data.records, data.clients, data.searching
 115 */
 116 function my_onstat(data){}
 117
 118 /*
 119 ** data[listname]: name, freq, [id]
 120 */
 121 function my_onterm(data)
 122 {
 123     var termLists = $("#termlists");
 124
 125     if(termStartup)
 126     {
 127         for(var key in data){
 128             if (key == "activeclients")
 129                 continue;
 130             var listName = key;
 131             if (key == "xtargets")
 132                 listName = "resource";
 133
 134             var termList = $('<div class="termlist" id="term_'+key+'"/>').appendTo(termLists);
 135             var termTitle = $('<div class="termTitle"><a class="unselected">'+listName+'</a></div>').appendTo(termList);
 136             termTitle.click(function(){
 137                                 if( this.firstChild.className == "selected" ){
 138                                     this.firstChild.className = "unselected";
 139                                     $(this.nextSibling).hide();
 140                                 } else {
 141                                     this.firstChild.className = "selected";
 142                                     $(this.nextSibling).show();
 143                                 }
 144                             });
 145
 146             listEntries = $('<div class="termEntries"></div>');
 147             listEntries.hide();
 148             listEntries.appendTo(termList);
 149
 150             for(var i = 0; i < data[key].length; i++)
 151             {
 152                 if (key == "xtargets"){
 153                     var listItem = $('<a class="sub" name="xtarget" value="'+data[key][i].id+'">'+data[key][i].name+
 154                                 '<span> ('+data[key][i].freq+')</span></a>').appendTo(listEntries);
 155                     listItem.click(function(){
 156                         refine(this.name, this.attributes[0].nodeValue) });
 157                 } else {
 158                     var listItem = $('<a class="sub" name="'+key+'">'+data[key][i].name+
 159                                     '<span> ('+data[key][i].freq+')</span></a>').appendTo(listEntries);
 160                     listItem.click(function(){ refine(this.name, this.firstChild.nodeValue) });
 161                 }
 162             }
 163             $('<hr/>').appendTo(termLists);
 164         }
 165         termStartup = false;
 166     }
 167     else
 168     {
 169         for(var key in data){
 170             if (key == "activeclients")
 171                 continue;
 172             var listEntries = $('#term_'+key).children('.termEntries');
 173             listEntries.empty()
 174
 175             for(var i = 0; i < data[key].length; i++){
 176                 if (key == "xtargets"){
 177                     var listItem = $('<a class="sub" name="xtarget" value="'+data[key][i].id+'">'+data[key][i].name+
 178                                 '<span> ('+data[key][i].freq+')</span></a>').click(function(){
 179                                                                         refine(this.name, this.attributes[0].nodeValue) });
 180                     listItem.appendTo(listEntries);
 181                 } else {
 182                     var listItem = $('<a class="sub" name="'+key+'">'+data[key][i].name+
 183                                     '<span> ('+data[key][i].freq+')</span></a>').click(function(){
 184                                                                         refine(this.name, this.firstChild.nodeValue) });
 185                     listItem.appendTo(listEntries);
 186                 }
 187             }
 188         }
 189     }
 190 }
 191
 192 /*
 193 ** data["md-title"], data["md-date"], data["md-author"], data["md-subject"], data["location"][0].name
 194 */
 195 function my_onrecord(data)
 196 {
 197     currentDetailedData = data;
 198     drawDetailedRec();
 199 }
 200
 201 /*
 202 ** data[i].id, data[i].hits, data[i].diagnostic, data[i].records, data[i].state
 203 */
 204 function my_onbytarget(data){}
 205
 206 /*
 207 *********************************************************************************
 208 ** HELPER FUNCTIONS *************************************************************
 209 *********************************************************************************
 210 */
 211 function toggleAdvanced()
 212 {
 213     if(advancedOn){
 214         $("div.advanced").hide();
 215         $("div.search").height(73);
 216         advancedOn = false;
 217         $("#advanced").text("Advanced search");
 218     } else {
 219         $("div.search").height(173);
 220         $("div.advanced").show();
 221         advancedOn = true;
 222         $("#advanced").text("Simple search");
 223     }
 224 }
 225
 226 function drawDetailedRec(detailBox)
 227 {
 228     if( detailBox == undefined )
 229         detailBox = $('<div class="detail"></div>').appendTo($('#rec_'+currentDetailedId));
 230
 231     detailBox.append('Details:<hr/>');
 232     var detailTable = $('<table></table>');
 233     var recDate = currentDetailedData["md-date"];
 234     var recSubject = currentDetailedData["md-subject"];
 235     var recLocation = currentDetailedData["location"];
 236
 237     if( recDate )
 238         detailTable.append('<tr><td class="item">Published:</td><td>'+recDate+'</td></tr>');
 239     if( recSubject )
 240         detailTable.append('<tr><td class="item">Subject:</td><td>'+recSubject+'</td></tr>');
 241     if( recLocation )
 242         detailTable.append('<tr><td class="item">Available at:</td><td>&nbsp;</td></tr>');
 243
 244     for(var i=0; i < recLocation.length; i++)
 245     {
 246         detailTable.append('<tr><td class="item">&nbsp;</td><td>'+recLocation[i].name+'</td></tr>');
 247     }
 248
 249     detailTable.appendTo(detailBox);
 250 }
 251
 252 function refine(field, value)
 253 {
 254     // for the time being
 255     if(!advancedOn)
 256         toggleAdvanced();
 257
 258     var query = '';
 259     var filter = undefined;
 260
 261     switch(field) {
 262         case "author":  query = ' and au="'+value+'"';
 263                         if(document.search.author.value != '') document.search.author.value+='; ';
 264                         document.search.author.value += value; break;
 265
 266         case "title":   query = ' and ti="'+value+'"';
 267                         //if(document.search.tile.value != '') document.search.title.value+='; ';
 268                         //document.search.title.value += value; break;
 269
 270         case "date":    query = ' and date="'+value+'"';
 271                         if(document.search.date.value != '') document.search.date.value+='; ';
 272                         document.search.date.value += value; break;
 273
 274         case "subject": query = ' and su="'+value+'"';
 275                         if(document.search.subject.value != '') document.search.subject.value+='; ';
 276                         document.search.subject.value += value; break;
 277
 278         case "xtarget": filter = 'id='+value; break;
 279     }
 280
 281     currentPage = 0;
 282     currentQuery = currentQuery + query;
 283     my_paz.search(currentQuery, currentResultsPerPage, currentSort, filter);
 284 }
 285
 286 function loadQueryFromForm()
 287 {
 288     var query = new Array();
 289
 290     if( document.search.query.value !== '' ) query.push(document.search.query.value);
 291     if( document.search.author.value !== '' ) query.push(parseField(document.search.author.value, 'au'));
 292     //if( document.search.title.value !== '' ) query.push(parseField(document.search.title.value, 'ti'));
 293     if( document.search.date.value !== '' ) query.push(parseField(document.search.date.value, 'date'));
 294     if( document.search.subject.value !== '' ) query.push(parseField(document.search.subject.value, 'su'));
 295
 296     if( query.length ) {
 297         currentQuery = query.join(" and ");
 298         return true;
 299     } else {
 300         return false;
 301     }
 302 }
 303
 304 function parseField(inputString, field)
 305 {
 306     var inputArr = inputString.split(';');
 307     var outputArr = new Array();
 308     for(var i=0; i < inputArr.length; i++){
 309         if(inputArr[i].length < 3){
 310             continue;
 311         }
 312         outputArr.push(field+'="'+inputArr[i]+'"');
 313     }
 314     return outputArr.join(" and ");
 315 }
 316
 317 function drawPager(max, hits)
 318 {
 319     var firstOnPage = currentPage * currentResultsPerPage + 1;
 320     var lastOnPage = (firstOnPage + currentResultsPerPage - 1) < max ? (firstOnPage + currentResultsPerPage - 1) : max;
 321
 322     var results = $('div.showing');
 323     results.empty();
 324     results.append('Displaying: <b>'+firstOnPage+'</b> to <b>'+lastOnPage+
 325                             '</b> of <b>'+max+'</b>'); //(total hits: '+hits+')');
 326     var pager = $('div.pages');
 327     pager.empty();
 328
 329     if ( currentPage > 0 ){
 330         $('<a class="previous_active">Previous</a>').click(function() { my_paz.showPrev(1); currentPage--; }).appendTo(pager.eq(0));
 331         $('<a class="previous_active">Previous</a>').click(function() { my_paz.showPrev(1); currentPage--; }).appendTo(pager.eq(1));
 332     }
 333     else
 334         pager.append('<a class="previous_inactive">Previous</a>');
 335
 336     var numPages = Math.ceil(max / currentResultsPerPage);
 337
 338     for(var i = 1; i <= numPages; i++)
 339     {
 340         if( i == (currentPage + 1) ){
 341            $('<a class="select">'+i+'</a>').appendTo(pager);
 342            continue;
 343         }
 344         var pageLink = $('<a class="page">'+i+'</a>');
 345         var plClone = pageLink.clone();
 346
 347         pageLink.click(function() {
 348             my_paz.showPage(this.firstChild.nodeValue - 1);
 349             currentPage = (this.firstChild.nodeValue - 1);
 350             });
 351
 352         plClone.click(function() {
 353             my_paz.showPage(this.firstChild.nodeValue - 1);
 354             currentPage = (this.firstChild.nodeValue - 1);
 355             });
 356
 357         //nasty hack
 358         pager.eq(0).append(pageLink);
 359         pager.eq(1).append(plClone);
 360     }
 361
 362     if ( currentPage < (numPages-1) ){
 363         $('<a class="next_active">Next</a>').click(function() { my_paz.showNext(1); currentPage++; }).appendTo(pager.eq(0));
 364         $('<a class="next_active">Next</a>').click(function() { my_paz.showNext(1); currentPage++; }).appendTo(pager.eq(1));
 365     }
 366     else
 367         pager.append('<a class="next_inactive">Next</a>');
 368 }