Open-ILS/src/extras/opensearchportal.html

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