www/masterkey/js/client.js

   1 /*
   2 ** $Id: client.js,v 1.11 2007-04-03 14:27:21 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": "xtargets,subject,author,date",
  12                     //"onbytarget": my_onbytarget,
  13                     "onrecord": my_onrecord } );
  14
  15 /* some state variable */
  16 var currentSort = 'relevance';
  17 var currentResultsPerPage = 20;
  18 var currentPage = 0;
  19 var curQuery = new pzQuery();
  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     loadQueryFromForm();
  55     curQuery.clearFilter();
  56     fireSearch();
  57     drawBreadcrumb();
  58     $('div.content').show();
  59     $("div.leftbar").show();
  60     return false;
  61 }
  62
  63 /*
  64 *********************************************************************************
  65 ** pz2 Event Handlers ***********************************************************
  66 *********************************************************************************
  67 */
  68
  69 /*
  70 ** data.hits["md-title"], data.hits["md-author"], data.hits.recid, data.hits.count
  71 ** data.activeclients, data.merged, data.total, data.start, data.num
  72 */
  73 function my_onshow(data)
  74 {
  75     var recsBody = $('div.records');
  76     recsBody.empty();
  77
  78     for (var i = 0; i < data.hits.length; i++) {
  79         var title = data.hits[i]["md-title"] || 'N/A';
  80         var author = data.hits[i]["md-author"] || '';
  81         var id = data.hits[i].recid;
  82         var count = data.hits[i].count || 1;
  83
  84         var recBody = $('<div class="record" id="rec_'+id+'"></div>');
  85         var aTitle = $('<a class="recTitle">'+title+'</a>').appendTo(recBody);
  86         aTitle.click(function(){
  87                         var clickedId = this.parentNode.id.split('_')[1];
  88                         if(currentDetailedId == clickedId){
  89                             $(this.parentNode.lastChild).remove();
  90                             currentDetailedId = null;
  91                             return;
  92                         } else if (currentDetailedId != null) {
  93                             $('#rec_'+currentDetailedId).children('.detail').remove();
  94                         }
  95                         currentDetailedId = clickedId;
  96                         my_paz.record(currentDetailedId);
  97                         });
  98
  99         if( author ) {
 100             recBody.append('<i> by </i>');
 101             $('<a name="author" class="recAuthor">'+author+'</a>\n').click(function(){
 102                             refine(this.name, this.firstChild.nodeValue) }).appendTo(recBody);
 103         }
 104
 105         if( currentDetailedId == id ) {
 106             var detailBox = $('<div class="detail"></div>').appendTo(recBody);
 107             drawDetailedRec(detailBox);
 108         }
 109
 110         if( count > 1 ) {
 111             recBody.append('<span> ('+count+')</span>');
 112         }
 113
 114         recsBody.append('<div class="resultNum">'+(currentPage*currentResultsPerPage+i+1)+'.</a>');
 115         recsBody.append(recBody);
 116     }
 117     drawPager(data.merged, data.total);
 118 }
 119
 120 /*
 121 ** data.activeclients, data.hits, data.records, data.clients, data.searching
 122 */
 123 function my_onstat(data){}
 124
 125 /*
 126 ** data[listname]: name, freq, [id]
 127 */
 128 function my_onterm(data)
 129 {
 130     if(termStartup)
 131     {
 132         var termLists = $("#termlists");
 133
 134         for(var key in data){
 135             if (key == "activeclients")
 136                 continue;
 137             var listName = key;
 138             var listClass = "unselected";
 139
 140             if (key == "xtargets"){
 141                 listName = "resource";
 142                 listClass = "selected";
 143             }
 144
 145             var termList = $('<div class="termlist" id="term_'+key+'"/>').appendTo(termLists);
 146             var termTitle = $('<div class="termTitle"><a class="'+listClass+'">'+listName+'</a></div>').appendTo(termList);
 147             termTitle.click(function(){
 148                                 if( this.firstChild.className == "selected" ){
 149                                     this.firstChild.className = "unselected";
 150                                     $(this.nextSibling).hide();
 151                                 } else {
 152                                     this.firstChild.className = "selected";
 153                                     $(this.nextSibling).show();
 154                                 }
 155                             });
 156
 157             listEntries = $('<div class="termEntries"></div>');
 158             if (key != "xtargets") listEntries.hide();
 159             listEntries.appendTo(termList);
 160
 161             for(var i = 0; i < data[key].length; i++)
 162             {
 163                 if (key == "xtargets"){
 164                     var listItem = $('<a class="sub" name="xtarget" value="'+data[key][i].id+'">'+data[key][i].name
 165                             /*+'<span> ('+data[key][i].freq+')</span>'*/+'</a>');
 166                     listItem.click(function(){
 167                         refine(this.name, this.attributes[0].nodeValue, this.firstChild.nodeValue) });
 168                     listItem.appendTo(listEntries);
 169                 } else {
 170                     var listItem = $('<a class="sub" name="'+key+'">'+data[key][i].name
 171                             /*+'<span> ('+data[key][i].freq+')</span>'*/+'</a>');
 172                     listItem.click(function(){ refine(this.name, this.firstChild.nodeValue) });
 173                     listItem.appendTo(listEntries);
 174                 }
 175             }
 176             $('<hr/>').appendTo(termLists);
 177         }
 178         termStartup = false;
 179     }
 180     else
 181     {
 182         for(var key in data){
 183             if (key == "activeclients")
 184                 continue;
 185             var listEntries = $('#term_'+key).children('.termEntries');
 186             if( data[key].length ) listEntries.empty();
 187
 188             for(var i = 0; i < data[key].length; i++){
 189                 if (key == "xtargets"){
 190                     var listItem = $('<a class="sub" name="xtarget" value="'+data[key][i].id+'">'+data[key][i].name
 191                                 /*+'<span> ('+data[key][i].freq+')</span>'*/+'</a>').click(function(){
 192                                     refine(this.name, this.attributes[0].nodeValue, this.firstChild.nodeValue) });
 193                     listItem.appendTo(listEntries);
 194                 } else {
 195                     var listItem = $('<a class="sub" name="'+key+'">'+data[key][i].name
 196                                 /*+'<span> ('+data[key][i].freq+')</span>'*/+'</a>').click(function(){
 197                                                                         refine(this.name, this.firstChild.nodeValue) });
 198                     listItem.appendTo(listEntries);
 199                 }
 200             }
 201         }
 202     }
 203 }
 204
 205 /*
 206 ** data["md-title"], data["md-date"], data["md-author"], data["md-subject"], data["location"][0].name
 207 */
 208 function my_onrecord(data)
 209 {
 210     currentDetailedData = data;
 211     drawDetailedRec();
 212 }
 213
 214 /*
 215 ** data[i].id, data[i].hits, data[i].diagnostic, data[i].records, data[i].state
 216 */
 217 function my_onbytarget(data){}
 218
 219 /*
 220 *********************************************************************************
 221 ** HELPER FUNCTIONS *************************************************************
 222 *********************************************************************************
 223 */
 224 function fireSearch()
 225 {
 226     $('div.showing').empty().text('No records to show.');
 227     $('div.pages').empty().html('&nbsp;');
 228     $('div.records').empty();
 229     currentDetailedId = null;
 230     if( !curQuery.totalLength() )
 231         return false;
 232     my_paz.search(curQuery.toCCL(), currentResultsPerPage, currentSort, curQuery.getFilterString() );
 233 }
 234
 235 function toggleAdvanced()
 236 {
 237     if(advancedOn){
 238         $("div.advanced").hide();
 239         $("div.search").height(73);
 240         advancedOn = false;
 241         $("#advanced").text("Advanced search");
 242     } else {
 243         $("div.search").height(173);
 244         $("div.advanced").show();
 245         advancedOn = true;
 246         $("#advanced").text("Simple search");
 247         loadFormFieldsFromQuery();
 248     }
 249 }
 250
 251 function drawDetailedRec(detailBox)
 252 {
 253     if( detailBox == undefined )
 254         detailBox = $('<div class="detail"></div>').appendTo($('#rec_'+currentDetailedId));
 255
 256     detailBox.append('Details:<hr/>');
 257     var detailTable = $('<table></table>');
 258     var recDate = currentDetailedData["md-date"];
 259     var recSubject = currentDetailedData["md-subject"];
 260     var recLocation = currentDetailedData["location"];
 261
 262     if( recDate )
 263         detailTable.append('<tr><td class="item">Published:</td><td>'+recDate+'</td></tr>');
 264     if( recSubject )
 265         detailTable.append('<tr><td class="item">Subject:</td><td>'+recSubject+'</td></tr>');
 266     if( recLocation )
 267         detailTable.append('<tr><td class="item">Available at:</td><td>&nbsp;</td></tr>');
 268
 269     for(var i=0; i < recLocation.length; i++)
 270     {
 271         detailTable.append('<tr><td class="item">&nbsp;</td><td>'+recLocation[i].name+'</td></tr>');
 272     }
 273
 274     detailTable.appendTo(detailBox);
 275 }
 276
 277 function refine(field, value, opt)
 278 {
 279     switch(field) {
 280         case "author":  curQuery.addTerm('au', value); break;
 281         case "title":   curQuery.addTerm('ti', value); break;
 282         case "date":    curQuery.addTerm('date', value); break;
 283         case "subject": curQuery.addTerm('su', value); break;
 284         case "xtarget": curQuery.setFilter(opt, value); break;
 285     }
 286
 287     if(advancedOn)
 288         loadFormFieldsFromQuery();
 289
 290     currentPage = 0;
 291     drawBreadcrumb();
 292     fireSearch();
 293 }
 294
 295 function loadQueryFromForm()
 296 {
 297     curQuery.reset();
 298     curQuery.simpleQuery = document.search.query.value;
 299
 300     if( advancedOn )
 301     {
 302         curQuery.addTermsFromList(document.search.author.value, 'au');
 303         curQuery.addTermsFromList(document.search.title.value, 'ti');
 304         curQuery.addTermsFromList(document.search.date.value, 'date');
 305         curQuery.addTermsFromList(document.search.subject.value, 'su');
 306     }
 307 }
 308
 309 function loadFormFieldsFromQuery()
 310 {
 311     document.search.author.value = '';
 312     document.search.title.value = '';
 313     document.search.date.value = '';
 314     document.search.subject.value = '';
 315
 316     for(var i = 0; i < curQuery.numTerms; i++)
 317     {
 318         switch( curQuery.getTermFieldByIdx(i) )
 319         {
 320             case "au": document.search.author.value += curQuery.getTermValueByIdx(i) + '; '; break;
 321             case "ti": document.search.title.value += curQuery.getTermValueByIdx(i) + '; '; break;
 322             case "date": document.search.date.value += curQuery.getTermValueByIdx(i) + '; '; break;
 323             case "su": document.search.subject.value += curQuery.getTermValueByIdx(i) + '; '; break;
 324         }
 325     }
 326 }
 327
 328 function drawPager(max, hits)
 329 {
 330     var firstOnPage = currentPage * currentResultsPerPage + 1;
 331     var lastOnPage = (firstOnPage + currentResultsPerPage - 1) < max ? (firstOnPage + currentResultsPerPage - 1) : max;
 332
 333     var results = $('div.showing');
 334     results.empty();
 335     results.append('Displaying: <b>'+firstOnPage+'</b> to <b>'+lastOnPage+
 336                             '</b> of <b>'+max+'</b> (total hits: '+hits+')');
 337     var pager = $('div.pages');
 338     pager.empty();
 339
 340     if ( currentPage > 0 ){
 341         $('<a class="previous_active">Previous</a>').click(function() { my_paz.showPrev(1); currentPage--; }).appendTo(pager.eq(0));
 342         $('<a class="previous_active">Previous</a>').click(function() { my_paz.showPrev(1); currentPage--; }).appendTo(pager.eq(1));
 343     }
 344     else
 345         pager.append('<a class="previous_inactive">Previous</a>');
 346
 347     var numPages = Math.ceil(max / currentResultsPerPage);
 348
 349     var start = ( currentPage - 5 > 0 ? currentPage - 5 : 1 );
 350     var stop =  ( start + 12 < numPages ? start + 12 : numPages );
 351
 352     if (start > 1) $('<span>... </span>').appendTo(pager);
 353
 354     for(var i = start; i <= stop; i++)
 355     {
 356         if( i == (currentPage + 1) ){
 357            $('<a class="select">'+i+'</a>').appendTo(pager);
 358            continue;
 359         }
 360         var pageLink = $('<a class="page">'+i+'</a>');
 361         var plClone = pageLink.clone();
 362
 363         pageLink.click(function() {
 364             my_paz.showPage(this.firstChild.nodeValue - 1);
 365             currentPage = (this.firstChild.nodeValue - 1);
 366             });
 367
 368         plClone.click(function() {
 369             my_paz.showPage(this.firstChild.nodeValue - 1);
 370             currentPage = (this.firstChild.nodeValue - 1);
 371             });
 372
 373         //nasty hack
 374         pager.eq(0).append(pageLink);
 375         pager.eq(1).append(plClone);
 376     }
 377
 378     if (stop < numPages) $('<span> ...</span>').appendTo(pager);
 379
 380     if ( currentPage < (numPages-1) ){
 381         $('<a class="next_active">Next</a>').click(function() { my_paz.showNext(1); currentPage++; }).appendTo(pager.eq(0));
 382         $('<a class="next_active">Next</a>').click(function() { my_paz.showNext(1); currentPage++; }).appendTo(pager.eq(1));
 383     }
 384     else
 385         pager.append('<a class="next_inactive">Next</a>');
 386 }
 387
 388 function drawBreadcrumb()
 389 {
 390     var bc = $("#breadcrumb");
 391     bc.empty();
 392
 393     if(curQuery.filterNums) $('<strong id="filter"><a>'+curQuery.getFilterName(0)+'</a>: </strong>').click(function() {
 394                                 curQuery.removeFilter(0);
 395                                 refine();
 396                                 }).appendTo(bc);
 397
 398     bc.append('<span>'+curQuery.simpleQuery+'</span>');
 399
 400     for(var i = 0; i < curQuery.numTerms; i++){
 401         bc.append('<strong> + </strong>');
 402         var bcLink = $('<a id="pos_'+i+'">'+curQuery.getTermValueByIdx(i)+'</a>').click(function() {
 403                                             curQuery.removeTermByIdx(this.id.split('_')[1]);
 404                                             refine();
 405                                             });
 406         bc.append(bcLink);
 407     }
 408 }