1 /* $Id: search.js,v 1.14 2007-01-10 12:15:46 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;
151 var div_elem = document.createElement('div');
153 div_elem.className = 'pages';
155 if (start_offset < 0) {
159 for (off = start_offset;
160 off < hits && off < (start_offset + 2 * page_window * max);
163 var p = off / max + 1;
164 var page_elem = create_element('a', p);
165 var newline_node = document.createTextNode('\n');
167 if ((offset >= off) && (offset < (off + max))) {
168 page_elem.className = 'select';
171 page_elem.setAttribute('href', '#');
172 page_elem.setAttribute('onclick', 'update_offset(' + off + ')');
174 div_elem.appendChild(page_elem);
175 div_elem.appendChild(newline_node);
182 function update_offset (offset) {
183 document.search.startrec.value = offset;
184 update_action('page');
191 function create_element (name, cdata) {
192 var elem_node = document.createElement(name);
193 var text_node = document.createTextNode(cdata);
194 elem_node.appendChild(text_node);
200 function show_records()
202 if (xshow.readyState != 4)
205 var xml = xshow.responseXML;
206 var body = document.getElementById("body");
207 var hits = xml.getElementsByTagName("hit");
211 if (!hits[0]) // We should never get here with blocking operations
213 body.innerHTML = "No records yet";
214 searchtimer = setTimeout(check_search, 250);
219 var total = Number(xml.getElementsByTagName('total')[0].childNodes[0].nodeValue);
220 var merged = Number(xml.getElementsByTagName('merged')[0].childNodes[0].nodeValue);
221 var start = Number(xml.getElementsByTagName('start')[0].childNodes[0].nodeValue);
222 var num = Number(xml.getElementsByTagName('num')[0].childNodes[0].nodeValue);
223 var clients = Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
224 var pager = make_pager(merged, start,recstoshow);
225 var break_node1 = document.createElement('br');
226 var break_node2 = document.createElement('br');
227 var record_container = document.createElement('div');
228 var interval = create_element('div', 'Records : ' + (start + 1) +
229 ' to ' + (start + num) + ' of ' +
230 merged + ' (total hits: ' +
232 interval.className = 'results';
233 record_container.className = 'records';
235 body.appendChild(pager);
236 body.appendChild(interval);
237 body.appendChild(break_node1);
238 body.appendChild(break_node2);
239 body.appendChild(record_container);
241 for (i = 0; i < hits.length; i++)
243 var mk = hits[i].getElementsByTagName("md-title");
247 field = mk[0].childNodes[0].nodeValue;
252 var record_cell = create_element('a', field);
253 record_cell.setAttribute('href', '#');
254 record_cell.className = 'record';
255 record_container.appendChild(record_cell);
262 searchtimer = setTimeout(check_search, 1000);
264 searchtimer = setTimeout(check_search, 2000);
268 termtimer = setTimeout(check_termlist, 500);
271 function check_search()
273 clearTimeout(searchtimer);
274 var url = "search.pz2?" +
276 "&start=" + document.search.startrec.value +
277 "&num=" + recstoshow +
278 "&session=" + session +
280 xshow = GetXmlHttpObject();
281 xshow.onreadystatechange=show_records;
282 xshow.open("GET", url);
287 function refine_query (obj) {
288 var query_cell = document.getElementById('query');
289 var term = obj.innerHTML;
291 term = term.replace(/[\(\)]/g, '');
292 if (cur_termlist == 'subject')
293 query_cell.value += ' and su=(' + term + ')';
294 else if (cur_termlist == 'author')
295 query_cell.value += ' and au=(' + term + ')';
301 function show_termlist()
303 if (xtermlist.readyState != 4)
307 var xml = xtermlist.responseXML;
308 var body = facet_list[cur_facet][1];
309 var hits = xml.getElementsByTagName("term");
311 Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
315 if (cur_facet >= facet_list.length)
320 termtimer = setTimeout(check_termlist, 500);
326 for (i = 0; i < hits.length; i++)
328 var namen = hits[i].getElementsByTagName("name");
330 var refine_cell = create_element('a',
331 namen[0].childNodes[0].nodeValue);
332 refine_cell.setAttribute('href', '#');
333 refine_cell.setAttribute('onclick', 'refine_query(this)');
334 body.appendChild(refine_cell);
338 termtimer = setTimeout(check_termlist, 1000);
342 function check_termlist()
344 var facet_name = facet_list[cur_facet][0];
345 var url = "search.pz2?" +
347 "&session=" + session +
348 "&name=" + facet_name;
349 xtermlist = GetXmlHttpObject();
350 xtermlist.onreadystatechange=show_termlist;
351 xtermlist.open("GET", url);
352 xtermlist.send(null);
357 if (xstat.readyState != 4)
360 var xml = xstat.responseXML;
361 var body = document.getElementById("stat");
362 var nodes = xml.childNodes[0].childNodes;
364 Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
367 stattimer = setTimeout(check_stat, 500);
371 body.innerHTML = "(";
372 for (i = 0; i < nodes.length; i++)
374 if (nodes[i].nodeType != 1)
376 var value = nodes[i].childNodes[0].nodeValue;
379 var name = nodes[i].nodeName;
380 body.innerHTML += ' ' + name + '=' + value;
382 body.innerHTML += ')';
384 stattimer = setTimeout(check_stat, 2000);
388 function check_stat()
390 var url = "search.pz2?" +
392 "&session=" + session;
393 xstat = GetXmlHttpObject();
394 xstat.onreadystatechange=show_stat;
395 xstat.open("GET", url);
399 function search_started()
401 if (xsearch.readyState != 4)
403 var xml = xsearch.responseXML;
404 var error = xml.getElementsByTagName("error");
407 var msg = error[0].childNodes[0].nodeValue;
412 stattimer = setTimeout(check_stat, 1000);
415 function start_search()
417 clearTimeout(termtimer);
419 clearTimeout(searchtimer);
421 clearTimeout(stattimer);
423 clearTimeout(showtimer);
427 alert("Please load targets first");
430 var query = escape(document.getElementById('query').value);
431 var url = "search.pz2?" +
433 "&session=" + session +
435 xsearch = GetXmlHttpObject();
436 xsearch.onreadystatechange=search_started;
437 xsearch.open("GET", url);
439 document.getElementById("body").innerHTML = '';
442 document.search.startrec.value = 0;
446 function session_encode ()
451 for (i = 0; i < session_cells.length; i++)
453 var name = session_cells[i];
454 var value = escape(document.getElementById(name).value);
455 session += '&' + name + '=' + value;
462 function session_restore (session)
464 var fields = session.split(/&/);
467 for (i = 1; i < fields.length; i++)
469 var pair = fields[i].split(/=/);
470 var key = pair.shift();
471 var value = pair.join('=');
472 var cell = document.getElementById(key);
480 function session_read ()
482 var ses = window.location.hash.replace(/^#/, '');
487 function session_store (new_value)
489 window.location.hash = '#' + new_value;
493 function update_history ()
495 var session = session_encode();
496 session_store(session);
497 old_session = session;
501 function session_check ()
503 var session = session_read();
504 var action = document.search.action_type.value;
506 clearInterval(url_surveillence);
508 if ( session != unescape(old_session) )
510 session_restore(session);
512 if (action == 'search') {
514 } else if (action == 'page') {
517 alert('Unregocnized action_type: ' + action);
522 url_surveillence = setInterval(session_check, 200);
526 function get_available_facets () {
527 var facet_container = document.getElementById('termlists');
528 var facet_cells = facet_container.childNodes;
529 var facets = Array();
532 for (i = 0; i < facet_cells.length; i++) {
533 var cell = facet_cells.item(i);
535 if (cell.className == 'facet') {
536 var facet_name = cell.id.replace(/^facet_([^_]+)_terms$/, "$1");
537 facets.push(Array(facet_name, cell));
545 function get_facet_container (obj) {
546 return document.getElementById(obj.id + '_terms');
550 function toggle_facet (obj) {
551 var container = get_facet_container(obj);
553 if (obj.className == 'selected') {
554 obj.className = 'unselected';
555 container.style.display = 'inline';
557 obj.className = 'selected';
558 container.style.display = 'none';