Open-ILS/src/extras/opensearchportal.html

   1 <html>
   2         <head>
   3                 <title>mikers experimental opensearch portal</title>
   4                 <style>
   5
   6 * {
   7         font-family: verdana,arial,helvetica,sans-serif;
   8 }
   9
  10 #result_sources a {
  11         font-size: 8px;
  12         color: grey;
  13         text-decoration: none;
  14 }
  15
  16 .data_table {
  17         max-width: 200px;
  18 }
  19
  20 caption {
  21         border: solid lightblue 1px;
  22 }
  23
  24 a {
  25         color: blue;
  26         text-decoration: none;
  27 }
  28
  29 a:hover {
  30         color: blue;
  31         text-decoration: underline;
  32 }
  33
  34 a:active {
  35         color: red;
  36         text-decoration: underline;
  37 }
  38
  39 a:visited {
  40         color: blue;
  41         text-decoration: none;
  42 }
  43
  44 .title_link {
  45         font-size: medium;
  46         font-weight: bold;
  47 }
  48
  49 .desc_text {
  50         font-size: small;
  51 }
  52
  53 .hide {
  54         color: lightgray;
  55 }
  56
  57 .col_tab {
  58         border-collapse: collapse;
  59         border: solid gray 1px;
  60 }
  61
  62 .res_table {
  63         border-collapse: collapse;
  64 }
  65
  66 .res_tr {
  67         border-bottom: 1px dashed darkgrey;
  68 }
  69
  70                 </style>
  71                 <script>
  72
  73 var isIE = false;
  74
  75 function create_requestor () {
  76         var req;
  77         try {
  78                 req = new ActiveXObject("Msxml2.XMLHTTP");
  79                 isIE = true;
  80         } catch (e) {
  81                 try {
  82                         req = new ActiveXObject("Microsoft.XMLHTTP");
  83                         isIE = true;
  84                 } catch (E) {
  85                         req = false;
  86                 }
  87         }
  88
  89         if (!req && typeof XMLHttpRequest!='undefined') {
  90                 req = new XMLHttpRequest();
  91         }
  92
  93         if(!req) {
  94                 alert("NEEDS NEWER JAVASCRIPT for XMLHTTPRequest()");
  95                 return null;
  96         }
  97
  98         return req;
  99 }
 100
 101 var proxy = 'http://gapines.org/opensearch/?fetch=';
 102
 103 var images = [];
 104 var search_templates = [];
 105 var search_urls = {};
 106 var rel_scales = {};
 107
 108 var display_mode = 'col';
 109 var current_startPage = 1;
 110 var current_startIndex = 1;
 111 var current_count = 5;
 112
 113 function opensearch ( term, reset ) {
 114
 115         if (reset)
 116                 current_startPage = 1;
 117
 118         document.getElementById('next_button').className = 'hide';
 119
 120         if (current_startPage == 1)
 121                 document.getElementById('prev_button').className = 'hide';
 122         else
 123                 document.getElementById('prev_button').className = '';
 124
 125         var tot = document.getElementById('total');
 126         while (tot.lastChild)
 127                         tot.removeChild(tot.lastChild);
 128
 129         var src = document.getElementById('result_sources');
 130         while (src.lastChild)
 131                         src.removeChild(src.lastChild);
 132
 133         var tab = document.getElementById('results');
 134         while (tab.lastChild)
 135                         tab.removeChild(tab.lastChild);
 136
 137         search_count = 0;
 138
 139         var sources = new Array();
 140         var selector = document.getElementById('sources');
 141         for (var i = 0; i < selector.options.length; i++) {
 142                 if (selector.options[i].selected) {
 143                         sources.push(selector.options[i].value);
 144                 }
 145         }
 146
 147         search_templates = [];
 148         for (var i in sources) {
 149                 create_search( sources[i] );
 150         }
 151
 152         current_startIndex = (current_count * (current_startPage - 1)) + 1;
 153
 154         search_urls = [];
 155         for (var i in search_templates) {
 156                 if (!search_templates[i])
 157                         continue;
 158
 159                 if (!rel_scales[i])
 160                         rel_scales[i] = 0;
 161
 162                 var url = search_templates[i].replace(/\{searchTerms\}/,encodeURIComponent(term));
 163                 url = url.replace(/\{startPage\}/,current_startPage);
 164                 url = url.replace(/\{startIndex\}/,current_startIndex);
 165                 url = url.replace(/\{count\}/,current_count);
 166                 url = url.replace(/\{relevanceScale}/,rel_scales[i]);
 167                 search_urls[i] = proxy + encodeURIComponent(url);
 168
 169                 src.innerHTML += '<a href="' + url + '">' + url + '</a><br>';
 170         }
 171
 172         for (var i in search_urls) {
 173                 if (!search_templates[i])
 174                         continue;
 175
 176                 perform_search(i);
 177         }
 178
 179         document.getElementById('page_label').innerHTML = current_startPage;
 180 }
 181
 182 function perform_search ( source ) {
 183         var req = create_requestor();
 184
 185         req.onreadystatechange = function () {
 186                 if (req.readyState != 4)
 187                         return;
 188
 189                 var xml = req.responseXML;
 190
 191                 var desc  = getElementTextNS('','description',xml,0);
 192                 var xml_link  = getElementTextNS('','link',xml,0);
 193
 194                 var total  = getElementFloatNS('openSearch','totalResults',xml,0);
 195                 var scale = getElementFloatNS('openIll','relevanceScale',xml,0);
 196
 197                 rel_scales[source]  = scale
 198
 199                 var current_tot = getElementFloatNS('','span',document.getElementById('total').parentNode,0);
 200                 var tot = document.getElementById('total');
 201
 202                 if (!current_tot)
 203                         current_tot = 0;
 204
 205                 if (total > (current_startPage * current_count))
 206                         document.getElementById('next_button').className = '';
 207
 208                 current_tot += total
 209                 tot.innerHTML = current_tot;
 210
 211                 var list = xml.getElementsByTagName('item');
 212                 for (var i = 0; i < list.length; i++) {
 213
 214                         if ( typeof list[i] != 'object')
 215                                         continue;
 216
 217                         var tab = document.getElementById('results');
 218                         if (display_mode == 'col') {
 219                                 var col = document.getElementById(source);
 220                                 if (!col) {
 221                                         var row = tab.rows[0];
 222                                         if (!row)
 223                                                 row = tab.insertRow(0);
 224
 225                                         col = document.createElement('td');
 226                                         col.setAttribute('id',source);
 227                                         row.appendChild(col);
 228
 229                                         tab = document.createElement('table');
 230                                         tab.setAttribute('valign','top');
 231                                         tab.setAttribute('class','col_tab');
 232
 233                                         var cap = document.createElement('caption');
 234                                         tab.appendChild(cap);
 235                                         cap.innerHTML = desc + ' -- <a href="' + xml_link + '">XML</a>';
 236
 237                                         col.appendChild(tab);
 238
 239                                         var per = parseInt(100 / search_urls.length);
 240                                         col.setAttribute('valign','top');
 241                                         col.setAttribute('width', + per + '%');
 242
 243                                 } else {
 244                                         tab = col.firstChild;
 245                                 }
 246                         }
 247
 248                         if (!tab.rows.length) {
 249                                 add_result_row(tab, 0, list[i], source);
 250                         } else {
 251                                 for (var j = 0; j < tab.rows.length; j++) {
 252                                         if ( typeof tab.rows[j] != 'object')
 253                                                 continue;
 254
 255                                         var rank;
 256                                         try {
 257                                                 rank = getElementFloatNS('openIll','relevance',list[i],0);
 258                                         } catch (e) {
 259                                                 alert("error getting float relevance: " + e);
 260                                                 rank = 0;
 261                                         }
 262
 263                                         if ( rank < parseFloat(tab.rows[j].firstChild.firstChild.textContent) ) {
 264                                                 if ( (j + 1) == tab.rows.length) {
 265                                                         add_result_row(tab, tab.rows.length, list[i], source);
 266                                                         break
 267                                                 }
 268                                                 continue;
 269                                         }
 270                                         add_result_row(tab, j, list[i], source);
 271                                         break;
 272                                 }
 273                         }
 274                 }
 275         };
 276
 277         req.open('GET', proxy + encodeURIComponent(search_urls[source]), true);
 278         req.send(null);
 279 }
 280
 281
 282 // retrieve float of an XML document element, including
 283 // elements using namespaces
 284 function getElementFloatNS(prefix, local, parentElem, index) {
 285     var result = "";
 286     if (prefix && isIE) {
 287         // IE/Windows way of handling namespaces
 288         result = parentElem.getElementsByTagName(prefix + ":" + local)[index];
 289     } else {
 290         // the namespace versions of this method
 291         // (getElementsByTagNameNS()) operate
 292         // differently in Safari and Mozilla, but both
 293         // return value with just local name, provided
 294         // there aren't conflicts with non-namespace element
 295         // names
 296         result = parentElem.getElementsByTagName(local)[index];
 297     }
 298     if (result) {
 299         // get text, accounting for possible
 300         // whitespace (carriage return) text nodes
 301         if (result.childNodes.length > 1) {
 302             return parseFloat(result.childNodes[1].nodeValue);
 303         } else {
 304             return parseFloat(result.textContent);
 305         }
 306     } else {
 307         return 0;
 308     }
 309 }
 310
 311 // retrieve text of an XML document element, including
 312 // elements using namespaces
 313 function getElementTextNS(prefix, local, parentElem, index) {
 314     var result = "";
 315     if (prefix && isIE) {
 316         // IE/Windows way of handling namespaces
 317         result = parentElem.getElementsByTagName(prefix + ":" + local)[index];
 318     } else {
 319         // the namespace versions of this method
 320         // (getElementsByTagNameNS()) operate
 321         // differently in Safari and Mozilla, but both
 322         // return value with just local name, provided
 323         // there aren't conflicts with non-namespace element
 324         // names
 325         result = parentElem.getElementsByTagName(local)[index];
 326     }
 327     if (result) {
 328         // get text, accounting for possible
 329         // whitespace (carriage return) text nodes
 330         if (result.childNodes.length > 1) {
 331             return result.childNodes[1].nodeValue;
 332         } else {
 333             return result.textContent;
 334         }
 335     } else {
 336         return '';
 337     }
 338 }
 339
 340 function add_result_row (tab, index, xml, source) {
 341         var img = images[source];
 342         var rank,title,tlink,desc;
 343
 344         try {
 345                 rank = getElementFloatNS('openIll','relevance',xml,0);
 346         } catch (e) {
 347                 alert("error getting relevance: " + e);
 348                 rank = '0';
 349         }
 350
 351         try {
 352                 title = xml.getElementsByTagName('title')[0].textContent;
 353         } catch (e) {
 354                 title = '';
 355         }
 356
 357         try {
 358                 tlink = xml.getElementsByTagName('link')[0].textContent;
 359         } catch (e) {
 360                 tlink = '';
 361         }
 362
 363         try {
 364                 description = xml.getElementsByTagName('description')[0].textContent;
 365         } catch (e) {
 366                 description = '';
 367         }
 368
 369         var row = tab.insertRow(index);
 370         row.className = 'res_tr';
 371         row.innerHTML = '<td style="padding: 4px"><div style="display: none; visibility: hidden;">' + rank +
 372                                                  '</div><span class="title_link"><a href="' + tlink + '">' + title +
 373                                                  '</a></span><br/><span class="desc_text">' + description + '</span></td>' +
 374                                                  '<td><img title="' + parseInt(rank) + '% Relevant" width="32" height="32" src="' + img + '"></td>';
 375 }
 376
 377 function create_search ( s ) {
 378         var req = create_requestor();
 379
 380         req.open('GET',proxy +  encodeURIComponent(s),false);
 381         req.send(null);
 382
 383         try {
 384                 var xml = req.responseXML;
 385                 search_templates[s] = xml.getElementsByTagName('Url')[0].textContent;
 386                 var i =  xml.getElementsByTagName('Image');
 387                 if (i.length)
 388                         images[s] = i[0].textContent;
 389         } catch (e) {
 390                 alert('BAD XML!\n\n' + e + '\n\n' + req.responseText);
 391                 search_templates[s] = null;
 392                 images[s] = null;
 393         }
 394
 395 }
 396
 397                 </script>
 398         </head>
 399         <body>
 400                 <br/>
 401                 <form onsubmit="opensearch(document.getElementById('term').value, true); return false;">
 402                 <table>
 403                         <tr valign="top">
 404                                 <td>Keyword Search: </td>
 405                                 <td><input type="text" id="term" value="javascript"/></td>
 406                         </tr>
 407                         <tr valign="top">
 408                                 <td>Sources: </td>
 409                                 <td>
 410                                         <select id="sources" multiple="multiple" size=5>
 411                                                 <option value="http://gapines.org/opensearch.xml" selected>GPLS Pines</option>
 412                                                 <option value="http://rsinger.library.gatech.edu/opensearch/osdd-gil.xml" selected>GIL Universal Catalog</option>
 413                                                 <option value="http://search.athenscounty.lib.oh.us/cgi-bin/koha/opensearchdescription">NPL/Koha</option>
 414                                                 <option value="http://www.webdevref.com/blog/opensearchdescription.xml">WebDefRef</option>
 415                                         </select>
 416                         </tr>
 417                         <tr valign="top">
 418                                 <td>Hits per Source: </td>
 419                                 <td>
 420                                         <select onchange="current_count=this.options[this.selectedIndex].value;">
 421                                                 <option value="5" selected>5</option>
 422                                                 <option value="10">10</option>
 423                                                 <option value="25">25</option>
 424                                         </select>
 425                         </tr>
 426                         <tr valign="top">
 427                                 <td>Display mode: </td>
 428                                 <td>
 429                                         <select onchange="display_mode=this.options[this.selectedIndex].value;">
 430                                                 <option value="int">Integrated</option>
 431                                                 <option value="col" selected>Columns</option>
 432                                         </select> (Use "Columns" when searching unranked sources)
 433                         </tr>
 434                         <tr valign="top">
 435                                 <td colspan="2"><input type="submit" value="Go!"/></td>
 436                         </tr>
 437                 </table>
 438                 </form>
 439
 440                 <div id="result_sources"></div>
 441                 <br/>
 442                 <div>Current page: <span id="page_label"></span> --
 443                         <button class='hide' id='prev_button' onclick="if (this.className != 'hide') {current_startPage -= 1; opensearch(document.getElementById('term').value);}">Previous Page</button>
 444                         ...
 445                         <button class='hide' id='next_button' onclick="if (this.className != 'hide') {current_startPage += 1; opensearch(document.getElementById('term').value);}">Next Page</button>
 446                 </div>
 447                 <div>Total results: <span id="total"/></div>
 448                 <h1>Search Results</h1>
 449                 <hr/>
 450                 <br/>
 451                 <br/>
 452                 <table class="res_table" id="results"></table>
 453         </body>
 454 </html>