1 /* $Id: search.js,v 1.31 2007-01-16 19:24:44 quinn Exp $
2 * ---------------------------------------------------
15 var targetsloaded = false;
21 var session_cells = Array('query', 'startrec', 'action_type');
22 var old_session = session_read();
25 var page_window = 5; // Number of pages prior to and after the current page
28 var cur_sort = "relevance";
33 function initialize ()
35 facet_list = get_available_facets();
41 function GetXmlHttpObject()
44 if (window.XMLHttpRequest)
46 objXMLHttp=new XMLHttpRequest()
48 else if (window.ActiveXObject)
50 objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
55 function SendXmlHttpObject(obj, url, handler)
57 obj.onreadystatechange=handler;
62 function session_started()
64 if (xinitSession.readyState != 4)
66 var xml = xinitSession.responseXML;
67 var sesid = xml.getElementsByTagName("session")[0].childNodes[0].nodeValue;
68 assign_text(document.getElementById("status"), 'Live');
70 setTimeout(ping_session, 50000);
73 function start_session()
75 xinitSession = GetXmlHttpObject();
76 var url="search.pz2?";
77 url += "command=init";
78 xinitSession.onreadystatechange=session_started;
79 xinitSession.open("GET", url);
80 xinitSession.send(null);
83 function ping_session()
87 var url = "search.pz2?command=ping&session=" + session;
88 SendXmlHttpObject(xpingSession = GetXmlHttpObject(), url, session_pinged);
91 function session_pinged()
93 if (xpingSession.readyState != 4)
95 var xml = xpingSession.responseXML;
96 var error = xml.getElementsByTagName("error");
99 setTimeout(ping_session, 50000);
102 function update_action (new_action) {
103 document.search.action_type.value = new_action;
107 function make_pager (hits, offset, max) {
110 var start_offset = offset - page_window * max;
111 var div_elem = document.createElement('div');
113 div_elem.className = 'pages';
115 if (start_offset < 0) {
119 for (off = start_offset;
120 off < hits && off < (start_offset + 2 * page_window * max);
123 var p = off / max + 1;
124 var page_elem = create_element('a', p);
125 var newline_node = document.createTextNode(' ');
127 if ((offset >= off) && (offset < (off + max))) {
128 page_elem.className = 'select';
131 page_elem.setAttribute('off', off);
132 page_elem.style.cursor = 'pointer';
133 page_elem.onclick = function () {
134 update_offset(this.getAttribute('off'));
137 div_elem.appendChild(page_elem);
138 div_elem.appendChild(newline_node);
145 function update_offset (offset) {
146 clearTimeout(searchtimer);
147 document.search.startrec.value = offset;
148 update_action('page');
155 function create_element (name, cdata) {
156 var elem_node = document.createElement(name);
157 var text_node = document.createTextNode(cdata);
158 elem_node.appendChild(text_node);
164 function clear_cell (cell) {
165 while (cell.hasChildNodes())
166 cell.removeChild(cell.firstChild);
170 function append_text(cell, text) {
171 text_node = document.createTextNode(text);
172 cell.appendChild(text_node);
176 function assign_text (cell, text) {
178 append_text(cell, text);
181 function set_sort_opt(n, opt, str)
183 var txt = document.createTextNode(str);
188 var a = document.createElement('a');
190 a.setAttribute('href', "");
191 a.setAttribute('onclick', "set_sort('" + opt + "'); return false");
196 function set_sort(sort)
198 if (sort && sort != cur_sort)
205 var t = document.getElementById("sortselect");
207 t.appendChild(document.createTextNode("Sort results by: "));
208 set_sort_opt(t, 'relevance', 'Relevance');
209 t.appendChild(document.createTextNode(" or "));
210 set_sort_opt(t, 'title:1', 'Title');
213 function displayname(name)
215 if (name == 'md-author')
217 else if (name == 'md-subject')
219 else if (name == 'md-date')
221 else if (name == 'md-isbn')
223 else if (name == 'md-publisher')
229 function paint_details_tr(name, dn)
232 var dname = displayname(name);
233 var ln = create_element('b', dname);
234 var tln = document.createElement('td');
235 tln.setAttribute('width', 70);
236 tln.setAttribute('valign', 'top');
238 var tr = document.createElement('tr');
244 function paint_details(body, xml)
247 //body.appendChild(document.createElement('br'));
248 var nodes = xml.childNodes[0].childNodes;
250 var table = document.createElement('table');
251 table.setAttribute('cellpadding', 2);
254 for (i = 0; i < nodes.length; i++)
256 if (nodes[i].nodeType != 1)
258 var name = nodes[i].nodeName;
259 if (name == 'recid' || name == 'md-title')
261 if (name != lastname)
265 var tr = paint_details_tr(lastname, dn);
266 table.appendChild(tr);
268 dn = document.createElement('td');
272 if (!nodes[i].childNodes[0])
274 var value = nodes[i].childNodes[0].nodeValue;
275 if (dn.childNodes[0])
276 value = '; ' + value;
277 var nv = document.createTextNode(value);
282 var tr = paint_details_tr(lastname, dn);
283 table.appendChild(tr);
285 body.appendChild(table);
286 body.style.display = 'inline';
289 function show_details()
291 if (xfetchDetails.readyState != 4)
293 var xml = xfetchDetails.responseXML;
294 var error = xml.getElementsByTagName("error");
297 var msg = error[0].childNodes[0].nodeValue;
303 // This is some ugly display code. Replace with your own ting o'beauty
305 var idn = xml.getElementsByTagName('recid');
308 var id = idn[0].childNodes[0].nodeValue;
312 var body = document.getElementById('rec_' + id);
315 paint_details(body, xml);
318 function hyperlink_search(field, obj)
320 var term = obj.getAttribute('term');
321 var queryfield = document.getElementById('query');
322 queryfield.value = field + '=' + term;
326 function fetch_details(id)
329 var nodes = document.getElementsByName('listrecord');
331 for (i = 0; i < nodes.length; i++)
333 var dets = nodes[i].getElementsByTagName('div');
335 dets[0].style.display = 'none';
344 var url = "search.pz2?session=" + session +
347 SendXmlHttpObject(xfetchDetails = GetXmlHttpObject(), url, show_details);
350 function show_records()
352 if (xshow.readyState != 4)
355 var xml = xshow.responseXML;
356 var body = document.getElementById("body");
357 var hits = xml.getElementsByTagName("hit");
361 if (!hits[0]) // We should never get here with blocking operations
363 assign_text(body, 'No records yet');
364 searchtimer = setTimeout(check_search, 250);
368 var total = Number(xml.getElementsByTagName('total')[0].childNodes[0].nodeValue);
369 var merged = Number(xml.getElementsByTagName('merged')[0].childNodes[0].nodeValue);
370 var start = Number(xml.getElementsByTagName('start')[0].childNodes[0].nodeValue);
371 var num = Number(xml.getElementsByTagName('num')[0].childNodes[0].nodeValue);
372 var clients = Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
373 var pager = make_pager(merged, start,recstoshow);
374 var break_node1 = document.createElement('br');
375 var break_node2 = document.createElement('br');
376 var record_container = document.createElement('div');
377 var interval = create_element('div', 'Records : ' + (start + 1) +
378 ' to ' + (start + num) + ' of ' +
379 merged + ' (total hits: ' +
382 interval.className = 'results';
383 record_container.className = 'records';
385 body.appendChild(pager);
386 body.appendChild(interval);
387 body.appendChild(break_node1);
388 body.appendChild(break_node2);
389 body.appendChild(record_container);
391 for (i = 0; i < hits.length; i++)
393 var tn = hits[i].getElementsByTagName("md-title");
395 var an = hits[i].getElementsByTagName("md-author");
397 var cn = hits[i].getElementsByTagName("count");
399 var idn = hits[i].getElementsByTagName("recid");
402 title = tn[0].childNodes[0].nodeValue;
406 if (an[0] && an[0].childNodes[0])
407 author = an[0].childNodes[0].nodeValue;
409 count = Number(cn[0].childNodes[0].nodeValue);
410 var id = idn[0].childNodes[0].nodeValue;
412 var record_div = document.createElement('div');
413 record_div.className = 'record';
414 record_div.setAttribute('name', 'listrecord');
416 var record_cell = create_element('a', title);
417 record_cell.setAttribute('href', '#');
418 record_cell.setAttribute('onclick', 'fetch_details(' + id + '); return false');
419 record_div.appendChild(record_cell);
422 record_div.appendChild(document.createTextNode(', by '));
423 var al = create_element('a', author);
424 al.setAttribute('href', '#');
425 al.setAttribute('term', author);
426 al.onclick = function() { hyperlink_search('au', this); return false; };
427 record_div.appendChild(al);
430 record_div.appendChild(document.createTextNode(
431 ' (' + count + ')'));
432 var det_div = document.createElement('div');
434 paint_details(det_div, cur_rec);
436 det_div.style.display = 'none';
437 det_div.setAttribute('id', 'rec_' + id);
438 det_div.setAttribute('name', 'details');
439 record_div.appendChild(det_div);
440 record_container.appendChild(record_div);
447 searchtimer = setTimeout(check_search, 1000);
449 searchtimer = setTimeout(check_search, 2000);
453 termtimer = setTimeout(check_termlist, 500);
456 function check_search()
458 clearTimeout(searchtimer);
459 var url = "search.pz2?" +
461 "&start=" + document.search.startrec.value +
462 "&num=" + recstoshow +
463 "&session=" + session +
464 "&sort=" + cur_sort +
466 xshow = GetXmlHttpObject();
467 xshow.onreadystatechange=show_records;
468 xshow.open("GET", url);
473 function refine_query (obj) {
474 var term = obj.getAttribute('term');
475 var cur_termlist = obj.getAttribute('facet');
476 var query_cell = document.getElementById('query');
478 term = term.replace(/[\(\)]/g, '');
480 if (cur_termlist == 'subject')
481 query_cell.value += ' and su=(' + term + ')';
482 else if (cur_termlist == 'author')
483 query_cell.value += ' and au=(' + term + ')';
490 function show_termlist()
492 if (xtermlist.readyState != 4)
496 var xml = xtermlist.responseXML;
497 var body = facet_list[cur_facet][1];
498 var facet_name = facet_list[cur_facet][0];
499 var hits = xml.getElementsByTagName("term");
501 Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
505 if (cur_facet >= facet_list.length)
510 termtimer = setTimeout(check_termlist, 500);
516 for (i = 0; i < hits.length; i++)
518 var namen = hits[i].getElementsByTagName("name");
519 var freqn = hits[i].getElementsByTagName("frequency");
521 var term = namen[0].childNodes[0].nodeValue;
522 var freq = freqn[0].childNodes[0].nodeValue;
523 var refine_cell = create_element('a', term + ' (' + freq + ')');
524 refine_cell.setAttribute('href', '#');
525 refine_cell.setAttribute('term', term);
526 refine_cell.setAttribute('facet', facet_name);
527 refine_cell.onclick = function () {
531 body.appendChild(refine_cell);
535 termtimer = setTimeout(check_termlist, 1000);
539 function check_termlist()
541 var facet_name = facet_list[cur_facet][0];
542 var url = "search.pz2?" +
544 "&session=" + session +
545 "&name=" + facet_name;
546 xtermlist = GetXmlHttpObject();
547 xtermlist.onreadystatechange=show_termlist;
548 xtermlist.open("GET", url);
549 xtermlist.send(null);
554 if (xstat.readyState != 4)
557 var xml = xstat.responseXML;
558 var body = document.getElementById("stat");
559 var nodes = xml.childNodes[0].childNodes;
561 Number(xml.getElementsByTagName("activeclients")[0].childNodes[0].nodeValue);
564 stattimer = setTimeout(check_stat, 500);
568 assign_text(body, '(');
569 for (i = 0; i < nodes.length; i++)
571 if (nodes[i].nodeType != 1)
573 var value = nodes[i].childNodes[0].nodeValue;
576 var name = nodes[i].nodeName;
577 append_text(body, ' ' + name + '=' + value);
580 append_text(body, ')');
582 stattimer = setTimeout(check_stat, 2000);
586 function check_stat()
588 var url = "search.pz2?" +
590 "&session=" + session;
591 xstat = GetXmlHttpObject();
592 xstat.onreadystatechange=show_stat;
593 xstat.open("GET", url);
597 function search_started()
599 if (xsearch.readyState != 4)
601 var xml = xsearch.responseXML;
602 var error = xml.getElementsByTagName("error");
605 var msg = error[0].childNodes[0].nodeValue;
610 stattimer = setTimeout(check_stat, 1000);
613 function start_search()
615 clearTimeout(termtimer);
617 clearTimeout(searchtimer);
619 clearTimeout(stattimer);
621 clearTimeout(showtimer);
624 var query = escape(document.getElementById('query').value);
625 var url = "search.pz2?" +
627 "&session=" + session +
629 xsearch = GetXmlHttpObject();
630 xsearch.onreadystatechange=search_started;
631 xsearch.open("GET", url);
633 clear_cell(document.getElementById("body"));
636 document.search.startrec.value = 0;
639 function session_encode ()
644 for (i = 0; i < session_cells.length; i++)
646 var name = session_cells[i];
647 var value = escape(document.getElementById(name).value);
648 session += '&' + name + '=' + value;
655 function session_restore (session)
657 var fields = session.split(/&/);
660 for (i = 1; i < fields.length; i++)
662 var pair = fields[i].split(/=/);
663 var key = pair.shift();
664 var value = pair.join('=');
665 var cell = document.getElementById(key);
673 function session_read ()
675 var ses = window.location.hash.replace(/^#/, '');
680 function session_store (new_value)
682 window.location.hash = '#' + new_value;
686 function update_history ()
688 var session = session_encode();
689 session_store(session);
690 old_session = session;
694 function session_check ()
696 var session = session_read();
697 var action = document.search.action_type.value;
699 clearInterval(url_surveillence);
701 if ( session != unescape(old_session) )
703 session_restore(session);
705 if (action == 'search') {
707 } else if (action == 'page') {
710 alert('Unregocnized action_type: ' + action);
715 url_surveillence = setInterval(session_check, 200);
719 function get_available_facets () {
720 var facet_container = document.getElementById('termlists');
721 var facet_cells = facet_container.childNodes;
722 var facets = Array();
725 for (i = 0; i < facet_cells.length; i++) {
726 var cell = facet_cells.item(i);
728 if (cell.className == 'facet') {
729 var facet_name = cell.id.replace(/^facet_([^_]+)_terms$/, "$1");
730 facets.push(Array(facet_name, cell));
738 function get_facet_container (obj) {
739 return document.getElementById(obj.id + '_terms');
743 function toggle_facet (obj) {
744 var container = get_facet_container(obj);
746 if (obj.className == 'selected') {
747 obj.className = 'unselected';
748 container.style.display = 'inline';
750 obj.className = 'selected';
751 container.style.display = 'none';