1 /* $Id: search.js,v 1.15 2007-01-10 12:20:51 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 clear_cell (cell) {
201 while (cell.hasChildNodes())
202 cell.removeChild(cell.firstChild);
206 function show_records()
208 if (xshow.readyState != 4)
211 var xml = xshow.responseXML;
212 var body = document.getElementById("body");
213 var hits = xml.getElementsByTagName("hit");
217 if (!hits[0]) // We should never get here with blocking operations
219 body.innerHTML = "No records yet";
220 searchtimer = setTimeout(check_search, 250);
225 var total = Number(xml.getElementsByTagName('total')[0].childNodes[0].nodeValue);
226 var merged = Number(xml.getElementsByTagName('merged')[0].childNodes[0].nodeValue);
227 var start = Number(xml.getElementsByTagName('start')[0].childNodes[0].nodeValue);
228 var num = Number(xml.getElementsByTagName('num')[0].childNodes[0].nodeValue);
229 var clients = Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
230 var pager = make_pager(merged, start,recstoshow);
231 var break_node1 = document.createElement('br');
232 var break_node2 = document.createElement('br');
233 var record_container = document.createElement('div');
234 var interval = create_element('div', 'Records : ' + (start + 1) +
235 ' to ' + (start + num) + ' of ' +
236 merged + ' (total hits: ' +
238 interval.className = 'results';
239 record_container.className = 'records';
241 body.appendChild(pager);
242 body.appendChild(interval);
243 body.appendChild(break_node1);
244 body.appendChild(break_node2);
245 body.appendChild(record_container);
247 for (i = 0; i < hits.length; i++)
249 var mk = hits[i].getElementsByTagName("md-title");
253 field = mk[0].childNodes[0].nodeValue;
258 var record_cell = create_element('a', field);
259 record_cell.setAttribute('href', '#');
260 record_cell.className = 'record';
261 record_container.appendChild(record_cell);
268 searchtimer = setTimeout(check_search, 1000);
270 searchtimer = setTimeout(check_search, 2000);
274 termtimer = setTimeout(check_termlist, 500);
277 function check_search()
279 clearTimeout(searchtimer);
280 var url = "search.pz2?" +
282 "&start=" + document.search.startrec.value +
283 "&num=" + recstoshow +
284 "&session=" + session +
286 xshow = GetXmlHttpObject();
287 xshow.onreadystatechange=show_records;
288 xshow.open("GET", url);
293 function refine_query (obj) {
294 var query_cell = document.getElementById('query');
295 var term = obj.innerHTML;
297 term = term.replace(/[\(\)]/g, '');
298 if (cur_termlist == 'subject')
299 query_cell.value += ' and su=(' + term + ')';
300 else if (cur_termlist == 'author')
301 query_cell.value += ' and au=(' + term + ')';
307 function show_termlist()
309 if (xtermlist.readyState != 4)
313 var xml = xtermlist.responseXML;
314 var body = facet_list[cur_facet][1];
315 var hits = xml.getElementsByTagName("term");
317 Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
321 if (cur_facet >= facet_list.length)
326 termtimer = setTimeout(check_termlist, 500);
332 for (i = 0; i < hits.length; i++)
334 var namen = hits[i].getElementsByTagName("name");
336 var refine_cell = create_element('a',
337 namen[0].childNodes[0].nodeValue);
338 refine_cell.setAttribute('href', '#');
339 refine_cell.setAttribute('onclick', 'refine_query(this)');
340 body.appendChild(refine_cell);
344 termtimer = setTimeout(check_termlist, 1000);
348 function check_termlist()
350 var facet_name = facet_list[cur_facet][0];
351 var url = "search.pz2?" +
353 "&session=" + session +
354 "&name=" + facet_name;
355 xtermlist = GetXmlHttpObject();
356 xtermlist.onreadystatechange=show_termlist;
357 xtermlist.open("GET", url);
358 xtermlist.send(null);
363 if (xstat.readyState != 4)
366 var xml = xstat.responseXML;
367 var body = document.getElementById("stat");
368 var nodes = xml.childNodes[0].childNodes;
370 Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
373 stattimer = setTimeout(check_stat, 500);
377 body.innerHTML = "(";
378 for (i = 0; i < nodes.length; i++)
380 if (nodes[i].nodeType != 1)
382 var value = nodes[i].childNodes[0].nodeValue;
385 var name = nodes[i].nodeName;
386 body.innerHTML += ' ' + name + '=' + value;
388 body.innerHTML += ')';
390 stattimer = setTimeout(check_stat, 2000);
394 function check_stat()
396 var url = "search.pz2?" +
398 "&session=" + session;
399 xstat = GetXmlHttpObject();
400 xstat.onreadystatechange=show_stat;
401 xstat.open("GET", url);
405 function search_started()
407 if (xsearch.readyState != 4)
409 var xml = xsearch.responseXML;
410 var error = xml.getElementsByTagName("error");
413 var msg = error[0].childNodes[0].nodeValue;
418 stattimer = setTimeout(check_stat, 1000);
421 function start_search()
423 clearTimeout(termtimer);
425 clearTimeout(searchtimer);
427 clearTimeout(stattimer);
429 clearTimeout(showtimer);
433 alert("Please load targets first");
436 var query = escape(document.getElementById('query').value);
437 var url = "search.pz2?" +
439 "&session=" + session +
441 xsearch = GetXmlHttpObject();
442 xsearch.onreadystatechange=search_started;
443 xsearch.open("GET", url);
445 document.getElementById("body").innerHTML = '';
448 document.search.startrec.value = 0;
452 function session_encode ()
457 for (i = 0; i < session_cells.length; i++)
459 var name = session_cells[i];
460 var value = escape(document.getElementById(name).value);
461 session += '&' + name + '=' + value;
468 function session_restore (session)
470 var fields = session.split(/&/);
473 for (i = 1; i < fields.length; i++)
475 var pair = fields[i].split(/=/);
476 var key = pair.shift();
477 var value = pair.join('=');
478 var cell = document.getElementById(key);
486 function session_read ()
488 var ses = window.location.hash.replace(/^#/, '');
493 function session_store (new_value)
495 window.location.hash = '#' + new_value;
499 function update_history ()
501 var session = session_encode();
502 session_store(session);
503 old_session = session;
507 function session_check ()
509 var session = session_read();
510 var action = document.search.action_type.value;
512 clearInterval(url_surveillence);
514 if ( session != unescape(old_session) )
516 session_restore(session);
518 if (action == 'search') {
520 } else if (action == 'page') {
523 alert('Unregocnized action_type: ' + action);
528 url_surveillence = setInterval(session_check, 200);
532 function get_available_facets () {
533 var facet_container = document.getElementById('termlists');
534 var facet_cells = facet_container.childNodes;
535 var facets = Array();
538 for (i = 0; i < facet_cells.length; i++) {
539 var cell = facet_cells.item(i);
541 if (cell.className == 'facet') {
542 var facet_name = cell.id.replace(/^facet_([^_]+)_terms$/, "$1");
543 facets.push(Array(facet_name, cell));
551 function get_facet_container (obj) {
552 return document.getElementById(obj.id + '_terms');
556 function toggle_facet (obj) {
557 var container = get_facet_container(obj);
559 if (obj.className == 'selected') {
560 obj.className = 'unselected';
561 container.style.display = 'inline';
563 obj.className = 'selected';
564 container.style.display = 'none';