1 /* $Id: search.js,v 1.11 2007-01-10 09:50:57 sondberg Exp $
2 * ---------------------------------------------------
14 var targetsloaded = false;
20 var session_cells = Array('query', 'startrec', 'action_type');
21 var old_session = session_read();
24 var page_window = 5; // Number of pages prior to and after the current page
28 function initialize ()
30 facet_list = get_available_facets();
36 function GetXmlHttpObject()
39 if (window.XMLHttpRequest)
41 objXMLHttp=new XMLHttpRequest()
43 else if (window.ActiveXObject)
45 objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
50 function SendXmlHttpObject(obj, url, handler)
52 obj.onreadystatechange=handler;
57 function session_started()
59 if (xinitSession.readyState != 4)
61 var xml = xinitSession.responseXML;
62 var sesid = xml.getElementsByTagName("session")[0].childNodes[0].nodeValue;
63 document.getElementById("status").innerHTML = "Live";
65 setTimeout(ping_session, 50000);
68 function start_session()
70 xinitSession = GetXmlHttpObject();
71 var url="search.pz2?";
72 url += "command=init";
73 xinitSession.onreadystatechange=session_started;
74 xinitSession.open("GET", url);
75 xinitSession.send(null);
78 function ping_session()
82 var url = "search.pz2?command=ping&session=" + session;
83 SendXmlHttpObject(xpingSession = GetXmlHttpObject(), url, session_pinged);
86 function session_pinged()
88 if (xpingSession.readyState != 4)
90 var xml = xpingSession.responseXML;
91 var error = xml.getElementsByTagName("error");
94 var msg = error[0].childNodes[0].nodeValue;
99 setTimeout(ping_session, 50000);
102 function targets_loaded()
104 if (xloadTargets.readyState != 4)
106 var xml = xloadTargets.responseXML;
107 var error = xml.getElementsByTagName("error");
110 var msg = error[0].childNodes[0].nodeValue;
114 document.getElementById("targetstatus").innerHTML = "Targets loaded";
117 function load_targets()
119 var fn = document.getElementById("targetfilename").value;
120 clearTimeout(termtimer);
121 clearTimeout(searchtimer);
122 clearTimeout(stattimer);
123 clearTimeout(showtimer);
124 document.getElementById("stat").innerHTML = "";
127 alert("Please enter a target definition file name");
130 var url="search.pz2?" +
132 "&session=" + session +
134 document.getElementById("targetstatus").innerHTML = "Loading targets...";
135 xloadTargets = GetXmlHttpObject();
136 xloadTargets.onreadystatechange=targets_loaded;
137 xloadTargets.open("GET", url);
138 xloadTargets.send(null);
142 function update_action (new_action) {
143 document.search.action_type.value = new_action;
147 function make_pager (hits, offset, max) {
150 var start_offset = offset - page_window * max;
152 if (start_offset < 0) {
156 for (off = start_offset;
157 off < hits && off < (start_offset + 2 * page_window * max);
165 var p = off / max + 1;
167 if ((offset >= off) && (offset < (off + max)))
168 class = ' class="select"';
170 html += '<a href="#" ' + class +
171 'onclick="update_offset(' + off + ')">' + p + '</a>\n';
178 function update_offset (offset) {
179 document.search.startrec.value = offset;
180 update_action('page');
187 function show_records()
189 if (xshow.readyState != 4)
192 var xml = xshow.responseXML;
193 var body = document.getElementById("body");
194 var hits = xml.getElementsByTagName("hit");
195 if (!hits[0]) // We should never get here with blocking operations
197 body.innerHTML = "No records yet";
198 searchtimer = setTimeout(check_search, 250);
203 var total = Number(xml.getElementsByTagName('total')[0].childNodes[0].nodeValue);
204 var merged = Number(xml.getElementsByTagName('merged')[0].childNodes[0].nodeValue);
205 var start = Number(xml.getElementsByTagName('start')[0].childNodes[0].nodeValue);
206 var num = Number(xml.getElementsByTagName('num')[0].childNodes[0].nodeValue);
207 var clients = Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
208 body.innerHTML = '<div class="pages">' +
209 make_pager(merged, start, recstoshow) +
212 body.innerHTML += '<div class="results">Records : ' + (start + 1) +
213 ' to ' + (start + num) + ' of ' + merged +
214 ' (total hits: ' + total + ')</div><br/><br/>';
217 if (start + num < merged)
218 body.innerHTML += ' <a href="" ' +
219 'onclick="document.search.startrec.value=' + (start + recstoshow) +
220 ";update_action('page')" +
221 ';check_search(); update_history(); return false;">Next</a>';
224 body.innerHTML += ' <a href="" ' +
225 'onclick="document.search.startrec.value=' + (start - recstoshow) +
226 ";update_action('page')" +
227 ';check_search(); update_history();return false;">Previous</a>';
229 body.innerHTML += '<br/>';
231 body.innerHTML += '<div class="records">';
233 for (i = 0; i < hits.length; i++)
235 var mk = hits[i].getElementsByTagName("md-title");
236 var html = '<a href="#" class="record">';
240 field = mk[0].childNodes[0].nodeValue;
243 html += field + '</a>';
244 body.innerHTML += html;
247 body.innerHTML += '</div>';
252 searchtimer = setTimeout(check_search, 1000);
254 searchtimer = setTimeout(check_search, 2000);
258 termtimer = setTimeout(check_termlist, 500);
261 function check_search()
263 clearTimeout(searchtimer);
264 var url = "search.pz2?" +
266 "&start=" + document.search.startrec.value +
267 "&num=" + recstoshow +
268 "&session=" + session +
270 xshow = GetXmlHttpObject();
271 xshow.onreadystatechange=show_records;
272 xshow.open("GET", url);
277 function refine_query (obj) {
278 var query_cell = document.getElementById('query');
279 var term = obj.innerHTML;
281 term = term.replace(/[\(\)]/g, '');
282 if (cur_termlist == 'subject')
283 query_cell.value += ' and su=(' + term + ')';
284 else if (cur_termlist == 'author')
285 query_cell.value += ' and au=(' + term + ')';
291 function show_termlist()
293 if (xtermlist.readyState != 4)
297 var xml = xtermlist.responseXML;
298 var body = facet_list[cur_facet][1];
299 var hits = xml.getElementsByTagName("term");
301 Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
305 if (cur_facet >= facet_list.length)
310 termtimer = setTimeout(check_termlist, 500);
316 for (i = 0; i < hits.length; i++)
318 var namen = hits[i].getElementsByTagName("name");
320 body.innerHTML += '<a href="#" onclick="refine_query(this)">' +
321 namen[0].childNodes[0].nodeValue +
326 termtimer = setTimeout(check_termlist, 1000);
330 function check_termlist()
332 var facet_name = facet_list[cur_facet][0];
333 var url = "search.pz2?" +
335 "&session=" + session +
336 "&name=" + facet_name;
337 xtermlist = GetXmlHttpObject();
338 xtermlist.onreadystatechange=show_termlist;
339 xtermlist.open("GET", url);
340 xtermlist.send(null);
345 if (xstat.readyState != 4)
348 var xml = xstat.responseXML;
349 var body = document.getElementById("stat");
350 var nodes = xml.childNodes[0].childNodes;
352 Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
355 stattimer = setTimeout(check_stat, 500);
359 body.innerHTML = "(";
360 for (i = 0; i < nodes.length; i++)
362 if (nodes[i].nodeType != 1)
364 var value = nodes[i].childNodes[0].nodeValue;
367 var name = nodes[i].nodeName;
368 body.innerHTML += ' ' + name + '=' + value;
370 body.innerHTML += ')';
372 stattimer = setTimeout(check_stat, 2000);
376 function check_stat()
378 var url = "search.pz2?" +
380 "&session=" + session;
381 xstat = GetXmlHttpObject();
382 xstat.onreadystatechange=show_stat;
383 xstat.open("GET", url);
387 function search_started()
389 if (xsearch.readyState != 4)
391 var xml = xsearch.responseXML;
392 var error = xml.getElementsByTagName("error");
395 var msg = error[0].childNodes[0].nodeValue;
400 stattimer = setTimeout(check_stat, 1000);
403 function start_search()
405 clearTimeout(termtimer);
407 clearTimeout(searchtimer);
409 clearTimeout(stattimer);
411 clearTimeout(showtimer);
415 alert("Please load targets first");
418 var query = escape(document.getElementById('query').value);
419 var url = "search.pz2?" +
421 "&session=" + session +
423 xsearch = GetXmlHttpObject();
424 xsearch.onreadystatechange=search_started;
425 xsearch.open("GET", url);
427 // document.getElementById("termlist").innerHTML = '';
428 document.getElementById("body").innerHTML = '';
431 document.search.startrec.value = 0;
435 function session_encode ()
440 for (i = 0; i < session_cells.length; i++)
442 var name = session_cells[i];
443 var value = escape(document.getElementById(name).value);
444 session += '&' + name + '=' + value;
451 function session_restore (session)
453 var fields = session.split(/&/);
456 for (i = 1; i < fields.length; i++)
458 var pair = fields[i].split(/=/);
459 var key = pair.shift();
460 var value = pair.join('=');
461 var cell = document.getElementById(key);
469 function session_read ()
471 var ses = window.location.hash.replace(/^#/, '');
476 function session_store (new_value)
478 window.location.hash = '#' + new_value;
482 function update_history ()
484 var session = session_encode();
485 session_store(session);
486 old_session = session;
490 function session_check ()
492 var session = session_read();
493 var action = document.search.action_type.value;
495 clearInterval(url_surveillence);
497 if ( session != unescape(old_session) )
499 session_restore(session);
501 if (action == 'search') {
503 } else if (action == 'page') {
506 alert('Unregocnized action_type: ' + action);
511 url_surveillence = setInterval(session_check, 200);
515 function get_available_facets () {
516 var facet_container = document.getElementById('termlists');
517 var facet_cells = facet_container.childNodes;
518 var facets = Array();
521 for (i = 0; i < facet_cells.length; i++) {
522 var cell = facet_cells.item(i);
524 if (cell.className == 'facet') {
525 var facet_name = cell.id.replace(/^facet_([^_]+)_terms$/, "$1");
526 facets.push(Array(facet_name, cell));
534 function get_facet_container (obj) {
535 return document.getElementById(obj.id + '_terms');
539 function toggle_facet (obj) {
540 var container = get_facet_container(obj);
542 if (obj.className == 'selected') {
543 obj.className = 'unselected';
544 container.style.display = 'inline';
546 obj.className = 'selected';
547 container.style.display = 'none';