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[tt-rss.git] / feedlist.js
1 var _feed_cur_page = 0;
2 var _infscroll_disable = 0;
3 var _infscroll_request_sent = 0;
4 var feed_under_pointer = undefined;
5
6 var mouse_is_down = false;
7 var mouse_y = 0;
8 var mouse_x = 0;
9
10 var counter_timeout_id = false;
11
12 var resize_enabled = false;
13 var selection_disabled = false;
14 var counters_last_request = 0;
15
16 var feeds_sort_by_unread = false;
17 var feedlist_sortable_enabled = false;
18
19 function toggle_sortable_feedlist(enabled) {
20         try {
21
22                 if (enabled) {
23                         Sortable.create('feedList', {onChange: feedlist_dragsorted, only: "feedCat"});
24                 } else {
25                         Sortable.destroy('feedList');
26                 }
27
28         } catch (e) {
29                 exception_error("toggle_sortable_feedlist", e);
30         }
31 }
32
33 function viewCategory(cat) {
34         viewfeed(cat, '', true);
35         return false;
36 }
37
38 function render_feedlist(data) {
39         try {
40
41                 var f = $("feeds-frame");
42                 f.innerHTML = data;
43 //              cache_invalidate("FEEDLIST");
44 //              cache_inject("FEEDLIST", data, getInitParam("num_feeds"));
45                 feedlist_init();
46
47         } catch (e) {
48                 exception_error("render_feedlist", e);
49         }
50 }
51
52 function viewNextFeedPage() {
53         try {
54                 //if (!getActiveFeedId()) return;
55
56                 console.log("viewNextFeedPage: calling viewfeed(), p: " + parseInt(_feed_cur_page+1));
57
58                 viewfeed(getActiveFeedId(), '', activeFeedIsCat(), parseInt(_feed_cur_page+1));
59
60         } catch (e) {
61                 exception_error("viewNextFeedPage", e);
62         }
63 }
64
65
66 function viewfeed(feed, subop, is_cat, offset) {
67         try {
68                 if (is_cat == undefined) is_cat = false;
69
70                 if (offline_mode) return viewfeed_offline(feed, subop, is_cat, offset);
71
72 //              if (!offset) page_offset = 0;
73
74                 last_requested_article = 0;
75                 //counters_last_request = 0;
76
77                 if (feed == getActiveFeedId()) {
78                         cache_invalidate("F:" + feed);
79                 }
80
81 /*              if (getInitParam("theme") == "" || getInitParam("theme") == "compact") {
82                         if (getInitParam("hide_feedlist") == 1) {
83                                 Element.hide("feeds-holder");
84                         }               
85                 } */
86
87                 var force_nocache = false;
88
89                 var page_offset = 0;
90
91                 if (offset > 0) {
92                         page_offset = offset;
93                 } else {
94                         page_offset = 0;
95                         _feed_cur_page = 0;
96                         _infscroll_disable = 0;
97                 }
98
99                 if (getActiveFeedId() != feed) {
100                         _feed_cur_page = 0;
101                         active_post_id = 0;
102                         _infscroll_disable = 0;
103                 }
104
105                 if (page_offset != 0 && !subop) {
106                         var date = new Date();
107                         var timestamp = Math.round(date.getTime() / 1000);
108
109                         console.log(_infscroll_request_sent + " : " + timestamp);
110
111                         if (_infscroll_request_sent && _infscroll_request_sent + 30 > timestamp) {
112                                 console.log("infscroll request in progress, aborting");
113                                 return;
114                         }
115
116                         _infscroll_request_sent = timestamp;                    
117                 }
118
119                 enableHotkeys();
120                 hideAuxDlg();
121                 closeInfoBox();
122
123                 Form.enable("main_toolbar_form");
124
125                 var toolbar_form = document.forms["main_toolbar_form"];
126                 var toolbar_query = Form.serialize("main_toolbar_form");
127
128                 if (toolbar_form.query) {
129                         if (toolbar_form.query.value != "") {
130                                 force_nocache = true;
131                         }
132                         toolbar_form.query.value = "";
133                 }
134
135                 var query = "?op=viewfeed&feed=" + feed + "&" +
136                         toolbar_query + "&subop=" + param_escape(subop);
137
138                 if ($("search_form")) {
139                         var search_query = Form.serialize("search_form");
140                         query = query + "&" + search_query;
141                         $("search_form").query.value = "";
142                         closeInfoBox(true);
143                         force_nocache = true;
144                 }
145
146 //              console.log("IS_CAT_STORED: " + activeFeedIsCat() + ", IS_CAT: " + is_cat);
147
148                 if (subop == "MarkAllRead") {
149
150                         catchup_local_feed(feed, is_cat);
151
152                         var show_next_feed = getInitParam("on_catchup_show_next_feed") == "1";
153
154                         if (show_next_feed) {
155
156                                 if (!activeFeedIsCat()) {
157         
158                                         var feedlist = $('feedList');
159                                 
160                                         var next_unread_feed = getRelativeFeedId2(feed, false,
161                                                         "next", true);
162
163                                         /* gRFI2 also returns categories which we don't really 
164                                          * need here, so we skip them */
165
166                                         while (next_unread_feed && next_unread_feed.match("CAT:")) 
167                                                 next_unread_feed = getRelativeFeedId2(
168                                                                 next_unread_feed.replace("CAT:", ""),
169                                                                 true, "next", true);
170                                         
171                                         if (!next_unread_feed) {
172                                                 next_unread_feed = getRelativeFeedId2(-3, true,
173                                                         "next", true);
174                                         }
175         
176                                         if (next_unread_feed) {
177                                                 query = query + "&nuf=" + param_escape(next_unread_feed);
178                                                 //setActiveFeedId(next_unread_feed);
179                                                 feed = next_unread_feed;
180                                         }
181                                 } else {
182         
183                                         var next_unread_feed = getNextUnreadCat(feed);
184
185                                         /* we don't need to specify that our next feed is actually
186                                         a category, because we're in the is_cat mode by definition
187                                         already */
188
189                                         if (next_unread_feed && show_next_feed) {
190                                                 query = query + "&nuf=" + param_escape(next_unread_feed);
191                                                 feed = next_unread_feed;
192                                         }
193
194                                 }
195                         }
196                 }
197
198                 if (is_cat) {
199                         query = query + "&cat=1";
200                 }
201
202                 if (page_offset != 0) {
203                         query = query + "&skip=" + page_offset;
204
205                         // to prevent duplicate feed titles when showing grouped vfeeds
206                         if (vgroup_last_feed) {
207                                 query = query + "&vgrlf=" + param_escape(vgroup_last_feed);
208                         }
209                 }
210
211                 Form.enable("main_toolbar_form");
212
213                 console.log(query);
214
215                 var container = $("headlinesInnerContainer");
216
217                 var unread_ctr = -1;
218                 
219                 if (!is_cat) unread_ctr = get_feed_unread(feed);
220
221                 var cache_check = false;
222
223                 if (unread_ctr != -1 && !page_offset && !force_nocache && !subop) {
224
225                         var cache_prefix = "";
226                                 
227                         if (is_cat) {
228                                 cache_prefix = "C:";
229                         } else {
230                                 cache_prefix = "F:";
231                         }
232
233                         cache_check = cache_check_param(cache_prefix + feed, unread_ctr);
234                         console.log("headline cache check: " + cache_check);
235                 }
236
237                 if (cache_check) {
238                         var f = $("headlines-frame");
239
240                         clean_feed_selections();
241
242                         setActiveFeedId(feed, is_cat);
243                 
244                         if (!is_cat) {
245                                 var feedr = $("FEEDR-" + feed);
246                                 if (feedr && !feedr.hasClassName("Selected")) { 
247                                         feedr.addClassName("Selected");
248                                 } 
249                         } else {
250                                 var feedr = $("FCAT-" + feed_id);
251                                 if (feedr && !feedr.hasClassName("Selected")) { 
252                                         feedr.addClassName("Selected");
253                                 } 
254                         }
255
256                         f.innerHTML = cache_find_param(cache_prefix + feed, unread_ctr);
257
258                         request_counters();
259                         remove_splash();
260
261                 } else {
262
263 //                      if (!page_offset) {
264                                 var feedr;
265
266                                 if (is_cat) {
267                                         feedr = $('FCAP-' + feed);
268                                 } else {
269                                         feedr = $('FEEDR-' + feed);
270                                 }
271
272                                 if (feedr && !$('FLL-' + feed)) {
273
274                                         var img = $('FIMG-' + feed);
275
276                                         if (!is_cat && img) {
277
278                                                 var cat_list = feedr.parentNode;
279
280                                                 if (!cat_list || Element.visible(cat_list)) {
281                                                         if (!img.src.match("indicator_white")) {
282                                                                 img.alt = img.src;
283                                                                 img.src = getInitParam("sign_progress");
284                                                         }
285                                                 } else if (cat_list) {
286                                                         feed_cat_id = cat_list.id.replace("FCATLIST-", "");
287
288                                                         if (!$('FLL-' + feed_cat_id)) {
289
290                                                                 var ll = document.createElement('img');
291
292                                                                 ll.src = getInitParam("sign_progress_tiny");
293                                                                 ll.className = 'hlLoading';
294                                                                 ll.id = 'FLL-' + feed;
295
296                                                                 $("FCAP-" + feed_cat_id).appendChild(ll);
297                                                         }
298                                                 } 
299                                         
300                                         } else {
301
302                                                 if (!$('FLL-' + feed)) {
303                                                         var ll = document.createElement('img');
304
305                                                         ll.src = getInitParam("sign_progress_tiny");
306                                                         ll.className = 'hlLoading';
307                                                         ll.id = 'FLL-' + feed;
308         
309                                                         feedr.appendChild(ll);
310                                                 }
311                                         }
312                                 } 
313 //                      }  
314
315                         new Ajax.Request("backend.php", {
316                                 parameters: query,
317                                 onComplete: function(transport) { 
318                                         headlines_callback2(transport, page_offset); 
319                                 } });
320                 }
321
322         } catch (e) {
323                 exception_error("viewfeed", e);
324         }               
325 }
326
327 function toggleCollapseCat_af(effect) {
328         //var caption = elem.id.replace("FCATLIST-", "");
329
330         try {
331
332                 var elem = effect.element;
333                 var cat = elem.id.replace("FCATLIST-", "");
334                 var cap = $("FCAP-" + cat);
335
336                 if (Element.visible(elem)) {
337                         cap.innerHTML = cap.innerHTML.replace("…", "");
338                 } else {
339                         if (cap.innerHTML.lastIndexOf("…") != cap.innerHTML.length-3) {
340                                 cap.innerHTML = cap.innerHTML + "…";
341                         }
342                 }
343
344         } catch (e) {
345                 exception_error("toggleCollapseCat_af", e);
346         }
347 }
348
349 function toggleCollapseCat(cat) {
350         try {
351         
352                 var cat_elem = $("FCAT-" + cat);
353                 var cat_list = $("FCATLIST-" + cat).parentNode;
354                 var caption = $("FCAP-" + cat);
355                 
356                 Effect.toggle('FCATLIST-' + cat, 'blind', { duration: 0.5,
357                         afterFinish: toggleCollapseCat_af });
358
359                 var img = cat_elem.getElementsByTagName("IMG")[0];
360
361                 if (img.src.match("-collapse"))
362                         img.src = img.src.replace("-collapse", "-uncollapse")
363                 else
364                         img.src = img.src.replace("-uncollapse", "-collapse")
365
366                 new Ajax.Request("backend.php", 
367                         { parameters: "backend.php?op=feeds&subop=collapse&cid=" + 
368                                 param_escape(cat) } );
369
370                 local_collapse_cat(cat);
371
372         } catch (e) {
373                 exception_error("toggleCollapseCat", e);
374         }
375 }
376
377 function isCatCollapsed(cat) {
378         try {
379                 return Element.visible("FCATLIST-" + cat);
380         } catch (e) {
381                 exception_error("isCatCollapsed", e);
382         }
383 }
384
385 function feedlist_dragsorted(ctr) {
386         try {
387                 var cats = $$("#feedList > li[id*=FCAT-]");
388                 var ordered_cats = [];
389
390                 cats.each(function(cat) {
391                         ordered_cats.push(cat.id.replace("FCAT-", ""));
392                 });
393
394                 if (ordered_cats.length > 0) {
395
396                         var query = "?op=feeds&subop=catsort&corder=" + 
397                                 param_escape(ordered_cats.toString());
398
399                         //console.log(query);
400
401                         new Ajax.Request("backend.php", { parameters: query });
402                 }
403
404         } catch (e) {
405                 exception_error("feedlist_dragsorted", e);
406         }
407 }
408
409 function feedlist_init() {
410         try {
411                 loading_set_progress(90);
412
413                 //console.log("in feedlist init");
414                 
415                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
416                 document.onkeydown = hotkey_handler;
417                 document.onmousemove = mouse_move_handler;
418                 document.onmousedown = mouse_down_handler;
419                 document.onmouseup = mouse_up_handler;
420
421                 if (!offline_mode) setTimeout("timeout()", 1);
422
423                 setTimeout("hotkey_prefix_timeout()", 5*1000);
424
425                 if (getActiveFeedId()) {
426                         //console.log("some feed is open on feedlist refresh, reloading");
427                         //setTimeout("viewCurrentFeed()", 100);
428                 } else {
429                         if (getInitParam("cdm_auto_catchup") != 1 && get_feed_unread(-3) > 0) {
430                                 notify_silent_next();
431                                 setTimeout("viewfeed(-3)", 100);
432                         } else {
433                                 setTimeout("viewfeed(-5)", 100);
434                                 remove_splash();
435                         }
436                 }
437
438                 if (getInitParam("theme") == "" || 
439                                 getInitParam("theme_options").match("hide_footer")) {
440                         setTimeout("hide_footer()", 5000);
441                 }
442
443                 init_collapsable_feedlist(getInitParam("theme"));
444
445                 toggle_sortable_feedlist(isFeedlistSortable());
446
447         } catch (e) {
448                 exception_error("feedlist/init", e);
449         }
450 }
451
452 function hide_footer_af(effect) {
453         try {
454                 var c = $("content-frame");
455
456                 if (c) {
457                         c.style.bottom = "0px";
458
459                         var ioa = $("inline_orig_article");
460
461                         if (ioa) {
462                                 ioa.height = c.offsetHeight;
463                         }
464
465                 } else {
466                         var h = $("headlines-frame");
467
468                         if (h) {
469                                 h.style.bottom = "0px";
470                         }
471                 }
472
473         } catch (e) {
474                 exception_error("hide_footer_af", e);
475         }
476 }
477
478 function hide_footer() {
479         try {
480                 if (Element.visible("footer")) {
481                         new Effect.Fade("footer", { afterFinish: hide_footer_af });
482                 }
483         } catch (e) {
484                 exception_error("hide_footer", e);
485         }
486 }
487
488 function init_collapsable_feedlist() {
489         try {
490                 //console.log("init_collapsable_feedlist");
491
492                 var theme = getInitParam("theme");
493                 var options = getInitParam("theme_options");
494
495                 if (theme != "" && !options.match("collapse_feedlist")) return;
496
497                 var fbtn = $("collapse_feeds_btn");
498
499                 if (fbtn) Element.show(fbtn);
500
501                 if (getInitParam("collapsed_feedlist") == 1) {
502                         collapse_feedlist();
503                 }
504
505         } catch (e) {
506                 exception_error("init_hidden_feedlist", e);
507         }
508
509 }
510
511 function mouse_move_handler(e) {
512         try {
513                 var client_y;
514                 var client_x;
515
516                 if (window.event) {
517                         client_y = window.event.clientY;
518                         client_x = window.event.clientX;
519                 } else if (e) {
520                         client_x = e.screenX;
521                         client_y = e.screenY;
522                 }
523
524                 if (mouse_is_down) {
525
526                         if (mouse_y == 0) mouse_y = client_y;
527                         if (mouse_x == 0) mouse_x = client_x;
528
529                         resize_headlines(mouse_x - client_x, mouse_y - client_y);
530
531                         mouse_y = client_y;
532                         mouse_x = client_x;
533
534                         return false;
535                 }
536
537         } catch (e) {
538                 exception_error("mouse_move_handler", e);
539         }
540 }
541
542 function enable_selection(b) {
543         selection_disabled = !b;
544 }
545
546 function enable_resize(b) {
547         resize_enabled = b;
548 }
549
550 function mouse_down_handler(e) {
551         try {
552
553                 /* do not prevent right click */
554                 if (e && e.button && e.button == 2) return;
555
556                 if (resize_enabled) { 
557                         mouse_is_down = true;
558                         mouse_x = 0;
559                         mouse_y = 0;
560                         document.onselectstart = function() { return false; };
561                         return false;
562                 }
563
564                 if (selection_disabled) {
565                         document.onselectstart = function() { return false; };
566                         return false;
567                 }
568
569         } catch (e) {
570                 exception_error("mouse_down_handler", e);
571         }
572 }
573
574 function mouse_up_handler(e) {
575         try {
576                 mouse_is_down = false;
577
578                 if (!selection_disabled) {
579                         document.onselectstart = null;
580                         var e = $("headlineActionsBody");
581                         if (e) Element.hide(e);
582                         
583                         var e = $("offlineModeDrop");
584                         if (e) Element.hide(e);
585
586                 }
587
588         } catch (e) {
589                 exception_error("mouse_up_handler", e);
590         }
591 }
592
593 function request_counters_real() {
594
595         try {
596
597                 if (offline_mode) return;
598
599                 console.log("requesting counters...");
600
601                 var query = "?op=rpc&subop=getAllCounters&seq=" + next_seq();
602
603                 if (tagsAreDisplayed()) {
604                         query = query + "&omode=tl";
605                 } else {
606                         query = query + "&omode=flc";
607                 }
608
609                 new Ajax.Request("backend.php", {
610                         parameters: query,
611                         onComplete: function(transport) { 
612                                 try {
613                                         handle_rpc_reply(transport);
614                                 } catch (e) {
615                                         exception_error("viewfeed/getcounters", e);
616                                 }
617                         } });
618
619         } catch (e) {
620                 exception_error("request_counters_real", e);
621         }
622 }
623
624
625 function request_counters() {
626
627         try {
628
629                 if (getInitParam("bw_limit") == "1") return;
630
631                 var date = new Date();
632                 var timestamp = Math.round(date.getTime() / 1000);
633
634                 if (timestamp - counters_last_request > 5) {
635                         console.log("scheduling request of counters...");
636
637                         window.clearTimeout(counter_timeout_id);
638                         counter_timeout_id = window.setTimeout("request_counters_real()", 1000);
639
640                         counters_last_request = timestamp;
641                 } else {
642                         console.log("request_counters: rate limit reached: " + (timestamp - counters_last_request));
643                 }
644
645         } catch (e) {
646                 exception_error("request_counters", e);
647         }
648 }
649
650 function displayNewContentPrompt(id) {
651         try {
652
653                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
654                         __("New articles available in this feed (click to show)") + "</a>";
655
656                 msg = msg.replace("%s", getFeedName(id));
657
658                 $('auxDlg').innerHTML = msg;
659
660                 new Effect.Appear('auxDlg', {duration : 0.5});
661
662         } catch (e) {
663                 exception_error("displayNewContentPrompt", e);
664         }
665 }
666
667 function parse_counters(reply, scheduled_call) {
668         try {
669
670                 var feeds_found = 0;
671
672                 var elems = JSON.parse(reply.firstChild.nodeValue);
673
674                 for (var l = 0; l < elems.length; l++) {
675
676                         var id = elems[l].id
677                         var kind = elems[l].kind;
678                         var ctr = parseInt(elems[l].counter)
679                         var error = elems[l].error;
680                         var has_img = elems[l].has_img;
681                         var updated = elems[l].updated;
682                         var title = elems[l].title;
683                         var xmsg = elems[l].xmsg;
684         
685                         if (id == "global-unread") {
686
687                                 if (ctr > global_unread) {
688                                         offlineDownloadStart(1);
689                                 }
690
691                                 global_unread = ctr;
692                                 updateTitle();
693                                 continue;
694                         }
695
696                         if (id == "subscribed-feeds") {
697                                 feeds_found = ctr;
698                                 continue;
699                         }
700         
701                         if (kind && kind == "cat") {
702                                 var catctr = $("FCATCTR-" + id);
703                                 if (catctr) {
704                                         catctr.innerHTML = "(" + ctr + ")";
705                                         if (ctr > 0) {
706                                                 catctr.addClassName("Unread");
707                                         } else {
708                                                 catctr.removeClassName("Unread");
709                                         }
710                                 }
711                                 continue;
712                         }
713                 
714                         var feedctr = $("FEEDCTR-" + id);
715                         var feedu = $("FEEDU-" + id);
716                         var feedr = $("FEEDR-" + id);
717                         var feed_img = $("FIMG-" + id);
718                         var feedlink = $("FEEDL-" + id);
719                         var feedupd = $("FLUPD-" + id);
720
721                         if (updated && feedlink) {
722                                 if (error) {
723                                         feedlink.title = __("Error:") + " " + error + " (" + updated + ")";
724                                 } else {
725                                         feedlink.title = __("Updated:") + " " + updated;
726                                 }
727                         } else if (!updated && feedlink) {
728                                 feedlink.title = __("Updated:") + " " + __("Never");
729                         }
730
731                         if (feedupd) {
732                                 if (!updated) updated = "";
733
734                                 if (error) {
735                                         if (xmsg) {
736                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
737                                         } else {
738                                                 feedupd.innerHTML = updated + " (Error)";
739                                         }
740                                 } else {
741                                         if (xmsg) {
742                                                 feedupd.innerHTML = updated + " (" + xmsg + ")";
743                                         } else {
744                                                 feedupd.innerHTML = updated;
745                                         }
746                                 }
747                         }
748
749                         if (has_img && feed_img) {
750                                 if (!feed_img.src.match(id + ".ico")) {
751                                         feed_img.src = getInitParam("icons_url") + "/" + id + ".ico";
752                                 }
753                         }
754
755                         if (feedlink && title) {
756                                 feedlink.innerHTML = title;
757                         }
758
759                         if (feedctr && feedu && feedr) {
760
761 //                              if (id == getActiveFeedId())
762 //                                      console.log("HAS CTR: " + feedu.innerHTML + " GOT CTR: " + ctr + 
763 //                                                      " IS_SCHED: " + scheduled_call);
764
765                                 if (parseInt(ctr) > 0 && 
766                                                 parseInt(feedu.innerHTML) < parseInt(ctr) && 
767                                                 id == getActiveFeedId() && scheduled_call) {
768
769                                         displayNewContentPrompt(id);
770                                 }
771
772                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
773
774                                 feedu.innerHTML = ctr;
775
776                                 if (error) {
777                                         feedr.removeClassName("feed");
778                                         feedr.addClassName("error");
779                                 } else if (id > 0) {
780                                         feedr.removeClassName("error");
781                                         feedr.addClassName("feed");
782                                 }
783         
784                                 if (ctr > 0) {                                  
785                                         feedctr.addClassName("Unread");
786                                         feedr.addClassName("Unread");
787
788                                         if (row_needs_hl && 
789                                                         !getInitParam("theme_options").match('no_highlights')) { 
790                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
791                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
792
793                                                 cache_invalidate("F:" + id);
794                                         }
795                                 } else {
796                                         feedctr.removeClassName("Unread");
797                                         feedr.removeClassName("Unread");
798                                 }                       
799                         }
800                 }
801
802                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
803
804                 var feeds_stored = number_of_feeds;
805
806                 //console.log("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
807
808                 if (feeds_stored != feeds_found) {
809                         number_of_feeds = feeds_found;
810
811                         if (feeds_stored != 0 && feeds_found != 0) {
812                                 console.log("Subscribed feed number changed, refreshing feedlist");
813                                 setTimeout('updateFeedList(false, false)', 50);
814                         }
815                 } else {
816 /*                      var fl = $("feeds-frame").innerHTML;
817                         if (fl) {
818                                 cache_invalidate("FEEDLIST");
819                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
820                         } */
821                 }
822
823         } catch (e) {
824                 exception_error("parse_counters", e);
825         }
826 }
827
828 function get_feed_unread(id) {
829         try {
830                 return parseInt($("FEEDU-" + id).innerHTML);    
831         } catch (e) {
832                 return -1;
833         }
834 }
835
836 function get_cat_unread(id) {
837         try {
838                 var ctr = $("FCATCTR-" + id).innerHTML;
839                 ctr = ctr.replace("(", "");
840                 ctr = ctr.replace(")", "");
841                 return parseInt(ctr);
842         } catch (e) {
843                 return -1;
844         }
845 }
846
847 function get_feed_entry_unread(elem) {
848
849         var id = elem.id.replace("FEEDR-", "");
850
851         if (id <= 0) {
852                 return -1;
853         }
854
855         try {
856                 return parseInt($("FEEDU-" + id).innerHTML);    
857         } catch (e) {
858                 return -1;
859         }
860 }
861
862 function get_feed_entry_name(elem) {
863         var id = elem.id.replace("FEEDR-", "");
864         return getFeedName(id);
865 }
866
867
868 function resort_category(node, cat_mode) {
869
870         try {
871
872                 //console.log("resort_category: " + node + " CM=" + cat_mode);
873         
874                 var by_unread = feedsSortByUnread();
875         
876                 var list = node.getElementsByTagName("LI");
877         
878                 for (i = 0; i < list.length; i++) {
879         
880                         for (j = i+1; j < list.length; j++) {                   
881         
882                                 var tmp_val = get_feed_entry_unread(list[i]);
883                                 var cur_val = get_feed_entry_unread(list[j]);
884         
885                                 var tmp_name = get_feed_entry_name(list[i]).toLowerCase();
886                                 var cur_name = get_feed_entry_name(list[j]).toLowerCase();
887
888                                 /* we don't want to match FEEDR-0 - e.g. Archived articles */
889
890                                 var valid_pair = cat_mode || (list[i].id.match(/FEEDR-[1-9]/) &&
891                                                 list[j].id.match(/FEEDR-[1-9]/));
892
893                                 if (valid_pair && ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name)))) {
894                                         tempnode_i = list[i].cloneNode(true);
895                                         tempnode_j = list[j].cloneNode(true);
896                                         node.replaceChild(tempnode_i, list[j]);
897                                         node.replaceChild(tempnode_j, list[i]);
898                                 }
899                         }
900                 }
901
902         } catch (e) {
903                 exception_error("resort_category", e);
904         }
905
906 }
907
908 function resort_feedlist() {
909         console.log("resort_feedlist");
910
911         if ($("FCATLIST--1")) {
912
913                 var lists = $$("#feedList ul[id*=FCATLIST]");
914
915                 lists.each(function(list) {
916                                 if (list.id != "FCATLIST--1") resort_category(list, true);
917                         });
918
919         } else {
920                 resort_category($("feedList"), false);
921         }
922 }
923
924 function hideOrShowFeeds(hide) {
925
926         try {
927
928                 if ($("FCATLIST--1")) {
929         
930                         var lists = $$("#feedList ul[id*=FCATLIST]");
931         
932                         lists.each(function(list) {
933                                         hideOrShowFeedsCategory(list.id.replace("FCATLIST-", ""), hide);
934                                 });
935         
936                 } else {
937                         hideOrShowFeedsCategory(null, hide);
938                 }
939
940         } catch (e) {
941                 exception_error("hideOrShowFeeds", e);
942         }
943 }
944
945 function hideOrShowFeedsCategory(cat_id, hide) {
946         try {
947
948                 var nodes;
949                 var cat_node;
950                 
951                 if (cat_id) {
952                         nodes = $$("#FCATLIST-" + cat_id + " > li");
953                         cat_node = $("FCAT-" + cat_id);
954                 } else {
955                         nodes = $$("#feedList li");
956                 }
957
958                 var cat_unread = 0;
959
960                 nodes.each(function(node) {
961
962                         var is_unread = node.hasClassName("Unread") ||
963                                 node.hasClassName("Selected") || 
964                                 (node.hasClassName("virt") && 
965                                         getInitParam("hide_read_shows_special"));
966
967                         if (hide && !is_unread) {
968                                 Effect.Fade(node, {duration : 0.3, 
969                                         queue: { position: 'end', scope: 'FFADE-' + node.id, limit: 1 }});
970                         } else {
971                                 Element.show(node);
972                                 ++cat_unread;
973                         }
974
975                 });
976
977                 if (cat_node) {
978                         if (hide && cat_unread == 0 && !cat_node.hasClassName("Selected")) {
979                                 Effect.Fade(cat_node, {duration : 0.3, 
980                                         queue: { position: 'end', scope: 'CFADE-' + cat_node.id, limit: 1 }});
981                         } else {
982                                 Element.show(cat_node);
983                         }
984                 }
985
986         } catch (e) {
987                 exception_error("hideOrShowFeedsCategory", e);
988         }
989 }
990
991 function getFeedName(id, is_cat) {      
992         var e;
993
994         if (is_cat) {
995                 e = $("FCATN-" + id);
996         } else {
997                 e = $("FEEDN-" + id);
998         }
999         if (e) {
1000                 return e.innerHTML.stripTags();
1001         } else {
1002                 return null;
1003         }
1004 }
1005
1006 function getNextUnreadCat(id) {
1007         try {
1008                 var rows = $$("#feedList li[id*=FCAT]");
1009                 var unread_cats = [];
1010
1011                 rows.each(function(row) {
1012                         var cat_id = row.id.replace("FCAT-", "");
1013
1014                         if (Element.visible(row) && get_cat_unread(cat_id) > 0)
1015                                 unread_cats.push(parseInt(cat_id));
1016                         });
1017
1018                 console.log(unread_cats);
1019                 
1020                 var idx = unread_cats.indexOf(id);
1021
1022                 if (idx != -1 && idx < unread_cats.length-1) {
1023                         return unread_cats[idx+1];                                      
1024                 } else {
1025                         return unread_cats[0];
1026                 }
1027
1028         } catch (e) {
1029                 exception_error("getNextUnreadCat", e);
1030         }
1031 }
1032
1033 function getRelativeFeedId2(id, is_cat, direction, unread_only) {       
1034         try {
1035
1036 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1037
1038                 var rows = $$("#feedList li");
1039                 var feeds = new Array();
1040         
1041                 for (var i = 0; i < rows.length; i++) {
1042                         if (rows[i].id.match("FEEDR-")) {
1043         
1044                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1045         
1046                                         if (!unread_only || 
1047                                                         (rows[i].hasClassName("Unread") || rows[i].id == "FEEDR-" + id)) {
1048                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1049                                         }
1050                                 }
1051                         }
1052
1053                         if (rows[i].id.match("FCAT-")) {
1054                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1055
1056                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1057
1058                                         if (cat_id >= 0) {
1059                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1060                                                         feeds.push("CAT:"+cat_id);
1061                                                 }
1062                                         }
1063                                 }
1064                         }
1065                 }
1066         
1067 //              alert(feeds.toString());
1068
1069                 if (!id) {
1070                         if (direction == "next") {
1071                                 return feeds.shift();
1072                         } else {
1073                                 return feeds.pop();
1074                         }
1075                 } else {
1076                         if (direction == "next") {
1077                                 if (is_cat) id = "CAT:" + id;
1078                                 var idx = feeds.indexOf(id);
1079                                 if (idx != -1 && idx < feeds.length) {
1080                                         return feeds[idx+1];                                    
1081                                 } else {
1082                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1083                                 }
1084                         } else {
1085                                 if (is_cat) id = "CAT:" + id;
1086                                 var idx = feeds.indexOf(id);
1087                                 if (idx > 0) {
1088                                         return feeds[idx-1];
1089                                 } else {
1090                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1091                                 }
1092                         }
1093         
1094                 }
1095
1096         } catch (e) {
1097                 exception_error("getRelativeFeedId2", e);
1098         }
1099 }
1100
1101 function clean_feed_selections() {
1102         try {
1103                 $$("#feedList li").invoke('removeClassName', 'Selected');
1104         } catch (e) {
1105                 exception_error("clean_feed_selections", e);
1106         }
1107 }
1108
1109 function feedsSortByUnread() {
1110         return feeds_sort_by_unread;
1111 }
1112
1113