www/masterkey/js/client.js

   1 /*
   2 ** $Id: client.js,v 1.21 2007-04-30 03:35:57 quinn 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({
   8                     "onshow": my_onshow,
   9                     //"showtime": 1000,
  10                     //"onstat": my_onstat,
  11                     "onterm": my_onterm,
  12                     "termlist": "xtargets,subject,author,date",
  13                     //"onbytarget": my_onbytarget,
  14                     "onrecord": my_onrecord,
  15                     "errorhandler": my_errorhandler
  16                     });
  17
  18 /* some state variable */
  19 var currentSort = 'relevance';
  20 var currentResultsPerPage = 20;
  21 var currentPage = 0;
  22 var curQuery = new pzQuery();
  23
  24 var currentDetailedId = null;
  25 var currentDetailedData = null;
  26
  27 var termStartup = true;
  28 var advancedOn = false;
  29
  30 var showBriefLocations = false;
  31
  32 /* wait until the DOM is ready and register basic handlers */
  33 $(document).ready( function() {
  34                     document.search.onsubmit = onFormSubmitEventHandler;
  35
  36                     document.search.query.value = '';
  37                     document.search.title.value = '';
  38                     document.search.author.value = '';
  39                     document.search.subject.value = '';
  40                     document.search.date.value = '';
  41
  42                     $('#advanced').click(toggleAdvanced);
  43
  44                     $('#sort').change(function(){
  45                         currentSort = this.value;
  46                         currentPage = 0;
  47                         my_paz.show(0, currentResultsPerPage, currentSort);
  48                     });
  49
  50                     $('#perpage').change(function(){
  51                         currentResultsPerPage = this.value;
  52                         currentPage = 0;
  53                         my_paz.show(0, currentResultsPerPage, currentSort);
  54                     });
  55 } );
  56
  57 /* search button event handler */
  58 function onFormSubmitEventHandler() {
  59     loadQueryFromForm();
  60     curQuery.clearFilter();
  61     fireSearch();
  62     drawBreadcrumb();
  63     $('div.motd').empty();
  64     $('div.content').show();
  65     $("div.leftbar").show();
  66     return false;
  67 }
  68
  69 /*
  70 *********************************************************************************
  71 ** pz2 Event Handlers ***********************************************************
  72 *********************************************************************************
  73 */
  74 function my_errorhandler(err)
  75 {
  76     switch (err.message)
  77     {
  78         case 'QUERY': alert("Your query was not understood. Please rephrase."); break;
  79         default: alert(err.message);
  80     }
  81 }
  82
  83 /*
  84 ** data.hits["md-title"], data.hits["md-author"], data.hits.recid, data.hits.count
  85 ** data.activeclients, data.merged, data.total, data.start, data.num
  86 */
  87 function my_onshow(data)
  88 {
  89     var recsBody = $('div.records');
  90     recsBody.empty();
  91
  92     for (var i = 0; i < data.hits.length; i++) {
  93         var title = data.hits[i]["md-title"] || 'N/A';
  94         var author = data.hits[i]["md-author"] || '';
  95         var id = data.hits[i].recid;
  96         var count = data.hits[i].count || 1;
  97
  98         var recBody = $('<div class="record" id="rec_'+id+'"></div>');
  99         var aTitle = $('<a class="recTitle">'+title+'</a>').appendTo(recBody);
 100         aTitle.click(function(){
 101                         var clickedId = this.parentNode.id.split('_')[1];
 102                         if(currentDetailedId == clickedId){
 103                             $(this.parentNode.lastChild).remove();
 104                             currentDetailedId = null;
 105                             return;
 106                         } else if (currentDetailedId != null) {
 107                             $('#rec_'+currentDetailedId).children('.detail').remove();
 108                         }
 109                         currentDetailedId = clickedId;
 110                         my_paz.record(currentDetailedId);
 111                         });
 112
 113         if( author ) {
 114             recBody.append('<i> by </i>');
 115             $('<a name="author" class="recAuthor">'+author+'</a>\n').click(function(){
 116                             refine("authoronly", this.firstChild.nodeValue) }).appendTo(recBody);
 117         }
 118
 119         if( currentDetailedId == id ) {
 120             var detailBox = $('<div class="detail"></div>').appendTo(recBody);
 121             drawDetailedRec(detailBox);
 122         }
 123
 124         if (showBriefLocations) {
 125             var location = data.hits[i]['location'];
 126             var l;
 127             var list = '';
 128             for (l in location) {
 129                 if (list)
 130                     list += ', ';
 131                 list += location[l].name;
 132             }
 133             recBody.append('<span> ('+list+')</span>');
 134         }
 135         else {
 136             if( count > 1 ) {
 137                 recBody.append('<span> ('+count+')</span>');
 138             }
 139         }
 140
 141         recsBody.append('<div class="resultNum">'+(currentPage*currentResultsPerPage+i+1)+'.</a>');
 142         recsBody.append(recBody);
 143     }
 144     drawPager(data.merged, data.total);
 145 }
 146
 147 /*
 148 ** data.activeclients, data.hits, data.records, data.clients, data.searching
 149 */
 150 function my_onstat(data){}
 151
 152 /*
 153 ** data[listname]: name, freq, [id]
 154 */
 155 function my_onterm(data)
 156 {
 157     if(termStartup)
 158     {
 159         var termLists = $("#termlists");
 160
 161         for(var key in data){
 162             if (key == "activeclients")
 163                 continue;
 164             var listName = key;
 165             var listClass = "unselected";
 166
 167             if (key == "xtargets"){
 168                 listName = "resource";
 169                 listClass = "selected";
 170             }
 171
 172             var termList = $('<div class="termlist" id="term_'+key+'"/>').appendTo(termLists);
 173             var termTitle = $('<div class="termTitle"><a class="'+listClass+'">'+listName+'</a></div>').appendTo(termList);
 174             termTitle.click(function(){
 175                                 if( this.firstChild.className == "selected" ){
 176                                     this.firstChild.className = "unselected";
 177                                     $(this.nextSibling).hide();
 178                                 } else {
 179                                     this.firstChild.className = "selected";
 180                                     $(this.nextSibling).show();
 181                                 }
 182                             });
 183
 184             listEntries = $('<div class="termEntries"></div>');
 185             if (key != "xtargets") listEntries.hide();
 186             listEntries.appendTo(termList);
 187
 188             for(var i = 0; i < data[key].length; i++)
 189             {
 190                 if (key == "xtargets"){
 191                     var listItem = $('<a class="sub" name="xtarget" value="'+data[key][i].id+'">'+data[key][i].name +'<span> ('+data[key][i].freq+')</span>'+'</a>');
 192                     listItem.click(function(){
 193                         refine(this.name, this.attributes[0].nodeValue, this.firstChild.nodeValue) });
 194                     listItem.appendTo(listEntries);
 195                 } else {
 196                     var listItem = $('<a class="sub" name="'+key+'">'+data[key][i].name
 197                             +'<span> ('+data[key][i].freq+')</span>'+'</a>');
 198                     listItem.click(function(){ refine(this.name, this.firstChild.nodeValue) });
 199                     listItem.appendTo(listEntries);
 200                 }
 201             }
 202             $('<hr/>').appendTo(termLists);
 203         }
 204         termStartup = false;
 205     }
 206     else
 207     {
 208         for(var key in data){
 209             if (key == "activeclients")
 210                 continue;
 211             var listEntries = $('#term_'+key).children('.termEntries');
 212             if( data[key].length ) listEntries.empty();
 213
 214             for(var i = 0; i < data[key].length; i++){
 215                 if (key == "xtargets"){
 216                     var listItem = $('<a class="sub" name="xtarget" value="'+data[key][i].id+'">'+data[key][i].name+'<span> ('+data[key][i].freq+')</span>'+'</a>').click(function(){
 217                                     refine(this.name, this.attributes[0].nodeValue, this.firstChild.nodeValue) });
 218                     listItem.appendTo(listEntries);
 219                 } else {
 220                     var listItem = $('<a class="sub" name="'+key+'">'+data[key][i].name
 221                                 +'<span> ('+data[key][i].freq+')</span>'+'</a>').click(function(){
 222                                                                         refine(this.name, this.firstChild.nodeValue) });
 223                     listItem.appendTo(listEntries);
 224                 }
 225             }
 226         }
 227     }
 228 }
 229
 230 /*
 231 ** data["md-title"], data["md-date"], data["md-author"], data["md-subject"], data["location"][0].name
 232 */
 233 function my_onrecord(data)
 234 {
 235     currentDetailedData = data;
 236     drawDetailedRec();
 237 }
 238
 239 /*
 240 ** data[i].id, data[i].hits, data[i].diagnostic, data[i].records, data[i].state
 241 */
 242 function my_onbytarget(data){}
 243
 244 /*
 245 *********************************************************************************
 246 ** HELPER FUNCTIONS *************************************************************
 247 *********************************************************************************
 248 */
 249 function fireSearch()
 250 {
 251     $('div.showing').empty().text('No records to show.');
 252     $('div.pages').empty().html('&nbsp;');
 253     $('div.records').empty();
 254     currentDetailedId = null;
 255     if( !curQuery.totalLength() )
 256         return false;
 257     my_paz.search(curQuery.toCCL(), currentResultsPerPage, currentSort, curQuery.getFilterString() );
 258 }
 259
 260 function toggleAdvanced()
 261 {
 262     if(advancedOn){
 263         $("div.advanced").hide();
 264         $("div.search").height(73);
 265         advancedOn = false;
 266         $("#advanced").text("Advanced search");
 267     } else {
 268         $("div.search").height(173);
 269         $("div.advanced").show();
 270         advancedOn = true;
 271         $("#advanced").text("Simple search");
 272         loadFormFieldsFromQuery();
 273     }
 274 }
 275
 276 function drawDetailedRec(detailBox)
 277 {
 278     if( detailBox == undefined )
 279         detailBox = $('<div class="detail"></div>').appendTo($('#rec_'+currentDetailedId));
 280
 281     var detailTable = $('<table></table>');
 282     var recLocation = currentDetailedData["location"];
 283
 284     var hdtarget;
 285     if( recLocation ) {
 286         hdtarget = $('<tr><td class="item">Available at:</td></tr>');
 287         detailTable.append(hdtarget);
 288
 289         for(var i=0; i < recLocation.length; i++)
 290         {
 291             if (!hdtarget)
 292                 hdtarget = $('<tr><td class="item">&nbsp;</td></tr>').appendTo(detailTable);
 293             var url = recLocation[i]["md-url"];
 294             var description = recLocation[i]["md-description"];
 295             hdtarget.append('<td><b>'+recLocation[i].name+'</b></td>');
 296             if (description)
 297                 detailTable.append($('<tr><td>&nbsp</td><td>'+description+'</td></tr>'));
 298             if (url) {
 299                 var tline = $('<tr><td>&nbsp;</td></tr>');
 300                 var td = $('<td></td>').appendTo(tline);
 301                 var tlink = $('<a>Go to resource</a>');
 302                 tlink.attr('href', url);;
 303                 tlink.attr('target', '_blank');
 304                 tlink.appendTo(td);
 305                 detailTable.append(tline);
 306             }
 307             hdtarget = undefined;
 308         }
 309     }
 310
 311     detailTable.appendTo(detailBox);
 312 }
 313
 314 function refine(field, value, opt)
 315 {
 316     switch(field) {
 317         case "authoronly":  curQuery.reset(); curQuery.addTerm('au', value); break;
 318         case "author":  curQuery.addTerm('au', value); break;
 319         case "title":   curQuery.addTerm('ti', value); break;
 320         case "date":    curQuery.addTerm('date', value); break;
 321         case "subject": curQuery.addTerm('su', value); break;
 322         case "xtarget": curQuery.setFilter(opt, value); break;
 323     }
 324
 325     if(advancedOn)
 326         loadFormFieldsFromQuery();
 327
 328     currentPage = 0;
 329     drawBreadcrumb();
 330     fireSearch();
 331 }
 332
 333 function loadQueryFromForm()
 334 {
 335     curQuery.reset();
 336     curQuery.simpleQuery = document.search.query.value;
 337
 338     if( advancedOn )
 339     {
 340         curQuery.addTermsFromList(document.search.author.value, 'au');
 341         curQuery.addTermsFromList(document.search.title.value, 'ti');
 342         curQuery.addTermsFromList(document.search.date.value, 'date');
 343         curQuery.addTermsFromList(document.search.subject.value, 'su');
 344     }
 345 }
 346
 347 function loadFormFieldsFromQuery()
 348 {
 349     document.search.author.value = '';
 350     document.search.title.value = '';
 351     document.search.date.value = '';
 352     document.search.subject.value = '';
 353
 354     for(var i = 0; i < curQuery.numTerms; i++)
 355     {
 356         switch( curQuery.getTermFieldByIdx(i) )
 357         {
 358             case "au": document.search.author.value += curQuery.getTermValueByIdx(i) + '; '; break;
 359             case "ti": document.search.title.value += curQuery.getTermValueByIdx(i) + '; '; break;
 360             case "date": document.search.date.value += curQuery.getTermValueByIdx(i) + '; '; break;
 361             case "su": document.search.subject.value += curQuery.getTermValueByIdx(i) + '; '; break;
 362         }
 363     }
 364 }
 365
 366 function drawPager(max, hits)
 367 {
 368     var firstOnPage = currentPage * currentResultsPerPage + 1;
 369     var lastOnPage = (firstOnPage + currentResultsPerPage - 1) < max ? (firstOnPage + currentResultsPerPage - 1) : max;
 370
 371     var results = $('div.showing');
 372     results.empty();
 373     results.append('Displaying: <b>'+firstOnPage+'</b> to <b>'+lastOnPage+
 374                             '</b> of <b>'+max+'</b> (total hits: '+hits+')');
 375     var pager = $('div.pages');
 376     pager.empty();
 377
 378     if ( currentPage > 0 ){
 379         $('<a class="previous_active">Previous</a>').click(function() { my_paz.showPrev(1); currentPage--; }).appendTo(pager.eq(0));
 380         $('<a class="previous_active">Previous</a>').click(function() { my_paz.showPrev(1); currentPage--; }).appendTo(pager.eq(1));
 381     }
 382     else
 383         pager.append('<a class="previous_inactive">Previous</a>');
 384
 385     var numPages = Math.ceil(max / currentResultsPerPage);
 386
 387     var start = ( currentPage - 5 > 0 ? currentPage - 5 : 1 );
 388     var stop =  ( start + 12 < numPages ? start + 12 : numPages );
 389
 390     if (start > 1) $('<span>... </span>').appendTo(pager);
 391
 392     for(var i = start; i <= stop; i++)
 393     {
 394         if( i == (currentPage + 1) ){
 395            $('<a class="select">'+i+'</a>').appendTo(pager);
 396            continue;
 397         }
 398         var pageLink = $('<a class="page">'+i+'</a>');
 399         var plClone = pageLink.clone();
 400
 401         pageLink.click(function() {
 402             my_paz.showPage(this.firstChild.nodeValue - 1);
 403             currentPage = (this.firstChild.nodeValue - 1);
 404             });
 405
 406         plClone.click(function() {
 407             my_paz.showPage(this.firstChild.nodeValue - 1);
 408             currentPage = (this.firstChild.nodeValue - 1);
 409             });
 410
 411         //nasty hack
 412         pager.eq(0).append(pageLink);
 413         pager.eq(1).append(plClone);
 414     }
 415
 416     if (stop < numPages) $('<span> ...</span>').appendTo(pager);
 417
 418     if ( currentPage < (numPages-1) ){
 419         $('<a class="next_active">Next</a>').click(function() { my_paz.showNext(1); currentPage++; }).appendTo(pager.eq(0));
 420         $('<a class="next_active">Next</a>').click(function() { my_paz.showNext(1); currentPage++; }).appendTo(pager.eq(1));
 421     }
 422     else
 423         pager.append('<a class="next_inactive">Next</a>');
 424 }
 425
 426 function drawBreadcrumb()
 427 {
 428     var bc = $("#breadcrumb");
 429     bc.empty();
 430
 431     if(curQuery.filterNums) $('<strong id="filter"><a>'+curQuery.getFilterName(0)+'</a>: </strong>').click(function() {
 432                                 curQuery.removeFilter(0);
 433                                 refine();
 434                                 }).appendTo(bc);
 435
 436     bc.append('<span>'+curQuery.simpleQuery+'</span>');
 437
 438     for(var i = 0; i < curQuery.numTerms; i++){
 439         bc.append('<strong> + </strong>');
 440         var bcLink = $('<a id="pos_'+i+'">'+curQuery.getTermValueByIdx(i)+'</a>').click(function() {
 441                                             curQuery.removeTermByIdx(this.id.split('_')[1]);
 442                                             refine();
 443                                             });
 444         bc.append(bcLink);
 445     }
 446 }