]> git.wh0rd.org Git - tt-rss.git/blob - tt-rss.js
Merge branch 'master' into google-gears-experimental
[tt-rss.git] / tt-rss.js
1 var total_unread = 0;
2 var first_run = true;
3 var display_tags = false;
4 var global_unread = -1;
5 var active_title_text = "";
6 var current_subtitle = "";
7 var daemon_enabled = false;
8 var daemon_refresh_only = false;
9 //var _qfd_deleted_feed = 0;
10 var firsttime_update = true;
11 var _active_feed_id = 0;
12 var _active_feed_is_cat = false;
13 var number_of_feeds = 0;
14 var sanity_check_done = false;
15 var _hfd_scrolltop = 0;
16 var hotkey_prefix = false;
17 var init_params = new Object();
18 var ver_offset = 0;
19 var hor_offset = 0;
20 var feeds_sort_by_unread = false;
21 var feedlist_sortable_enabled = false;
22 var offline_mode = false;
23 var store = false;
24 var localServer = false;
25 var db = false;
26
27 function activeFeedIsCat() {
28         return _active_feed_is_cat;
29 }
30
31 function getActiveFeedId() {
32 //      return getCookie("ttrss_vf_actfeed");
33         try {
34                 debug("gAFID: " + _active_feed_id);
35                 return _active_feed_id;
36         } catch (e) {
37                 exception_error("getActiveFeedId", e);
38         }
39 }
40
41 function setActiveFeedId(id, is_cat) {
42 //      return setCookie("ttrss_vf_actfeed", id);
43         try {
44                 debug("sAFID(" + id + ", " + is_cat + ")");
45                 _active_feed_id = id;
46
47                 if (is_cat != undefined) {
48                         _active_feed_is_cat = is_cat;
49                 }
50
51         } catch (e) {
52                 exception_error("setActiveFeedId", e);
53         }
54 }
55
56
57 function isFeedlistSortable() {
58         return feedlist_sortable_enabled;
59 }
60
61 function tagsAreDisplayed() {
62         return display_tags;
63 }
64
65 function toggleTags(show_all) {
66
67         try {
68
69         debug("toggleTags: " + show_all + "; " + display_tags);
70
71         var p = document.getElementById("dispSwitchPrompt");
72
73         if (!show_all && !display_tags) {
74                 displayDlg("printTagCloud");
75         } else if (show_all) {
76                 closeInfoBox();
77                 display_tags = true;
78                 p.innerHTML = __("display feeds");
79                 notify_progress("Loading, please wait...", true);
80                 updateFeedList();
81         } else if (display_tags) {
82                 display_tags = false;
83                 p.innerHTML = __("tag cloud");
84                 notify_progress("Loading, please wait...", true);
85                 updateFeedList();
86         }
87
88         } catch (e) {
89                 exception_error("toggleTags", e);
90         }
91 }
92
93 function dlg_frefresh_callback(transport, deleted_feed) {
94         if (getActiveFeedId() == deleted_feed) {
95                 var h = document.getElementById("headlines-frame");
96                 if (h) {
97                         h.innerHTML = "<div class='whiteBox'>" + __('No feed selected.') + "</div>";
98                 }
99         }
100
101         setTimeout('updateFeedList(false, false)', 50);
102         closeInfoBox();
103 }
104
105 function refetch_callback2(transport) {
106         try {
107
108                 var date = new Date();
109
110                 parse_counters_reply(transport, true);
111
112                 debug("refetch_callback2: done");
113
114 /*              if (!daemon_enabled && !daemon_refresh_only) {
115                         notify_info("All feeds updated.");
116                         updateTitle("");
117                 } else {
118                         //notify("");
119                 } */
120         } catch (e) {
121                 exception_error("refetch_callback", e);
122                 updateTitle("");
123         }
124 }
125
126 function backend_sanity_check_callback(transport) {
127
128         try {
129
130                 if (sanity_check_done) {
131                         fatalError(11, "Sanity check request received twice. This can indicate "+
132                       "presence of Firebug or some other disrupting extension. "+
133                                 "Please disable it and try again.");
134                         return;
135                 }
136
137                 if (!transport.responseXML) {
138                         if (!google.gears) {
139                                 fatalError(3, "Sanity check: Received reply is not XML", transport.responseText);
140                         } else {
141                                 init_offline();
142                         }
143                         return;
144                 }
145
146                 var reply = transport.responseXML.firstChild.firstChild;
147
148                 if (!reply) {
149                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
150                         return;
151                 }
152
153                 var error_code = reply.getAttribute("error-code");
154         
155                 if (error_code && error_code != 0) {
156                         return fatalError(error_code, reply.getAttribute("error-msg"));
157                 }
158
159                 debug("sanity check ok");
160
161                 var params = reply.nextSibling;
162
163                 if (params) {
164                         debug('reading init-params...');
165                         var param = params.firstChild;
166
167                         while (param) {
168                                 var k = param.getAttribute("key");
169                                 var v = param.getAttribute("value");
170                                 debug(k + " => " + v);
171                                 init_params[k] = v;                                     
172                                 param = param.nextSibling;
173                         }
174                 }
175
176                 sanity_check_done = true;
177
178                 init_second_stage();
179
180         } catch (e) {
181                 exception_error("backend_sanity_check_callback", e, transport); 
182         } 
183 }
184
185 function scheduleFeedUpdate(force) {
186
187         debug("in scheduleFeedUpdate");
188
189 /*      if (!daemon_enabled && !daemon_refresh_only) {
190                 notify_progress("Updating feeds...", true);
191         } */
192
193         var query_str = "backend.php?op=rpc&subop=";
194
195         if (force) {
196                 query_str = query_str + "forceUpdateAllFeeds";
197         } else {
198                 query_str = query_str + "updateAllFeeds";
199         }
200
201         var omode;
202
203         if (firsttime_update && !navigator.userAgent.match("Opera")) {
204                 firsttime_update = false;
205                 omode = "T";
206         } else {
207                 if (display_tags) {
208                         omode = "tl";
209                 } else {
210                         omode = "flc";
211                 }
212         }
213         
214         query_str = query_str + "&omode=" + omode;
215         query_str = query_str + "&uctr=" + global_unread;
216
217         var date = new Date();
218         var timestamp = Math.round(date.getTime() / 1000);
219         query_str = query_str + "&ts=" + timestamp
220
221         debug("REFETCH query: " + query_str);
222
223         new Ajax.Request(query_str, {
224                 onComplete: function(transport) { 
225                                 refetch_callback2(transport); 
226                         } });
227 }
228
229 function updateFeedList(silent, fetch) {
230
231 //      if (silent != true) {
232 //              notify("Loading feed list...");
233 //      }
234
235         debug("<b>updateFeedList</b>");
236
237         var query_str = "backend.php?op=feeds";
238
239         if (display_tags) {
240                 query_str = query_str + "&tags=1";
241         }
242
243         if (getActiveFeedId() && !activeFeedIsCat()) {
244                 query_str = query_str + "&actid=" + getActiveFeedId();
245         }
246
247         var date = new Date();
248         var timestamp = Math.round(date.getTime() / 1000);
249         query_str = query_str + "&ts=" + timestamp
250         
251         if (fetch) query_str = query_str + "&fetch=yes";
252
253 //      var feeds_frame = document.getElementById("feeds-frame");
254 //      feeds_frame.src = query_str;
255
256         debug("updateFeedList Q=" + query_str);
257
258         new Ajax.Request(query_str, {
259                 onComplete: function(transport) { 
260                         feedlist_callback2(transport); 
261                 } });
262
263 }
264
265 function catchupAllFeeds() {
266
267         var str = __("Mark all articles as read?");
268
269         if (getInitParam("confirm_feed_catchup") != 1 || confirm(str)) {
270
271                 var query_str = "backend.php?op=feeds&subop=catchupAll";
272
273                 notify_progress("Marking all feeds as read...");
274
275                 debug("catchupAllFeeds Q=" + query_str);
276
277                 new Ajax.Request(query_str, {
278                         onComplete: function(transport) { 
279                                 feedlist_callback2(transport); 
280                         } });
281
282                 global_unread = 0;
283                 updateTitle("");
284         }
285 }
286
287 function viewCurrentFeed(subop) {
288
289 //      if (getActiveFeedId()) {
290         if (getActiveFeedId() != undefined) {
291                 viewfeed(getActiveFeedId(), subop, activeFeedIsCat());
292         } else {
293                 disableContainerChildren("headlinesToolbar", false, document);
294 //              viewfeed(-1, subop); // FIXME
295         }
296         return false; // block unneeded form submits
297 }
298
299 function viewfeed(feed, subop) {
300         var f = window.frames["feeds-frame"];
301         f.viewfeed(feed, subop);
302 }
303
304 function timeout() {
305         if (getInitParam("bw_limit") == "1") return;
306
307         scheduleFeedUpdate(false);
308
309         var refresh_time = getInitParam("feeds_frame_refresh");
310
311         if (!refresh_time) refresh_time = 600; 
312
313         setTimeout("timeout()", refresh_time*1000);
314 }
315
316 function resetSearch() {
317         var searchbox = document.getElementById("searchbox")
318
319         if (searchbox.value != "" && getActiveFeedId()) {       
320                 searchbox.value = "";
321                 viewfeed(getActiveFeedId(), "");
322         }
323 }
324
325 function searchCancel() {
326         closeInfoBox(true);
327 }
328
329 function search() {
330         closeInfoBox(); 
331         viewCurrentFeed(0, "");
332 }
333
334 // if argument is undefined, current subtitle is not updated
335 // use blank string to clear subtitle
336 function updateTitle(s) {
337         var tmp = "Tiny Tiny RSS";
338
339         if (s != undefined) {
340                 current_subtitle = s;
341         }
342
343         if (global_unread > 0) {
344                 tmp = tmp + " (" + global_unread + ")";
345         }
346
347         if (current_subtitle) {
348                 tmp = tmp + " - " + current_subtitle;
349         }
350
351         if (active_title_text.length > 0) {
352                 tmp = tmp + " > " + active_title_text;
353         }
354
355         document.title = tmp;
356 }
357
358 function genericSanityCheck() {
359
360 //      if (!Ajax.getTransport()) fatalError(1);
361
362         setCookie("ttrss_vf_test", "TEST");
363         
364         if (getCookie("ttrss_vf_test") != "TEST") {
365                 fatalError(2);
366         }
367
368         return true;
369 }
370
371 function init() {
372
373         try {
374
375                 // this whole shebang is based on http://www.birnamdesigns.com/misc/busted2.html
376
377                 if (arguments.callee.done) return;
378                 arguments.callee.done = true;           
379
380                 init_gears();
381
382                 disableContainerChildren("headlinesToolbar", true);
383
384                 Form.disable("main_toolbar_form");
385
386                 if (!genericSanityCheck()) 
387                         return;
388
389                 if (getURLParam('debug')) {
390                         Element.show("debug_output");
391                         debug('debug mode activated');
392                 }
393
394                 var params = "&ua=" + param_escape(navigator.userAgent);
395
396                 loading_set_progress(30);
397
398                 new Ajax.Request("backend.php?op=rpc&subop=sanityCheck" + params,       {
399                         onComplete: function(transport) {
400                                         backend_sanity_check_callback(transport);
401                                 } });
402
403         } catch (e) {
404                 exception_error("init", e);
405         }
406 }
407
408 function resize_headlines(delta_x, delta_y) {
409
410         try {
411
412                 debug("resize_headlines: " + delta_x + ":" + delta_y);
413         
414                 var h_frame = document.getElementById("headlines-frame");
415                 var c_frame = document.getElementById("content-frame");
416                 var f_frame = document.getElementById("footer");
417                 var feeds_frame = document.getElementById("feeds-holder");
418                 var resize_grab = document.getElementById("resize-grabber");
419                 var resize_handle = document.getElementById("resize-handle");
420
421                 if (!c_frame || !h_frame) return;
422         
423                 if (feeds_frame && getInitParam("theme") == "compat") {
424                                 feeds_frame.style.bottom = f_frame.offsetHeight + "px";         
425                 }
426         
427                 if (getInitParam("theme") == "3pane") {
428         
429                         if (delta_x != undefined) {
430                                 if (c_frame.offsetLeft - delta_x > feeds_frame.offsetWidth + feeds_frame.offsetLeft + 100 && c_frame.offsetWidth + delta_x > 100) {
431                                         hor_offset = hor_offset + delta_x;
432                                 }
433                         }
434         
435                         debug("resize_headlines: HOR-mode: " + hor_offset);
436         
437                         c_frame.style.width = (400 + hor_offset) + "px";
438                         h_frame.style.right = c_frame.offsetWidth - 1 + "px";
439         
440                         resize_grab.style.top = (h_frame.offsetTop + h_frame.offsetHeight - 60) + "px";
441                         resize_grab.style.left = (h_frame.offsetLeft + h_frame.offsetWidth - 
442                                 4) + "px";
443                         resize_grab.style.display = "block";
444
445                         resize_handle.src = "themes/3pane/images/resize_handle_vert.png";
446                         resize_handle.style.paddingTop = (resize_grab.offsetHeight / 2 - 7) + "px";
447         
448                 } else {
449         
450                         if (delta_y != undefined) {
451                                 if (c_frame.offsetHeight + delta_y > 100 && h_frame.offsetHeight - delta_y > 100) {
452                                         ver_offset = ver_offset + delta_y;
453                                 }
454                         }
455         
456                         debug("resize_headlines: VER-mode: " + ver_offset);
457         
458                         h_frame.style.height = (300 - ver_offset) + "px";
459         
460                         c_frame.style.top = (h_frame.offsetTop + h_frame.offsetHeight + 0) + "px";
461                         h_frame.style.height = h_frame.offsetHeight + "px";
462         
463                         var theme_c = 0;
464         
465                         if (getInitParam("theme") == "graycube") {
466                                 theme_c = 1;
467                         }
468
469                         if (getInitParam("theme") == "graycube" || getInitParam("theme") == "compat") {
470                                 resize_handle.src = "themes/graycube/images/resize_handle_horiz.png";
471                         }
472         
473 /*                      resize_grab.style.top = (h_frame.offsetTop + h_frame.offsetHeight - 
474                                 4 - theme_c) + "px";
475                         resize_grab.style.display = "block"; */
476         
477                 }
478         
479                 if (getInitParam("cookie_lifetime") != 0) {
480                         setCookie("ttrss_offset_ver", ver_offset, 
481                                 getInitParam("cookie_lifetime"));
482                         setCookie("ttrss_offset_hor", hor_offset, 
483                                 getInitParam("cookie_lifetime"));
484                 } else {
485                         setCookie("ttrss_offset_ver", ver_offset);
486                         setCookie("ttrss_offset_hor", hor_offset);
487                 }
488
489         } catch (e) {
490                 exception_error("resize_headlines", e);
491         }
492
493 }
494
495 function init_second_stage() {
496
497         try {
498
499                 delCookie("ttrss_vf_test");
500
501 //              document.onresize = resize_headlines;
502
503                 var toolbar = document.forms["main_toolbar_form"];
504
505                 dropboxSelect(toolbar.view_mode, getInitParam("default_view_mode"));
506                 dropboxSelect(toolbar.limit, getInitParam("default_view_limit"));
507                 dropboxSelect(toolbar.order_by, getInitParam("default_view_order_by"));
508
509                 daemon_enabled = getInitParam("daemon_enabled") == 1;
510                 daemon_refresh_only = getInitParam("daemon_refresh_only") == 1;
511                 feeds_sort_by_unread = getInitParam("feeds_sort_by_unread") == 1;
512
513                 var fl = cache_find_param("FEEDLIST", getInitParam("num_feeds"));
514
515                 if (fl) {
516                         render_feedlist(fl);
517                         request_counters();
518                 } else {
519                         setTimeout('updateFeedList(false, false)', 50);
520                 }
521
522                 debug("second stage ok");
523
524                 loading_set_progress(60);
525
526                 ver_offset = parseInt(getCookie("ttrss_offset_ver"));
527                 hor_offset = parseInt(getCookie("ttrss_offset_hor"));
528
529                 debug("got offsets from cookies: ver " + ver_offset + " hor " + hor_offset);
530
531                 /* fuck IE */
532
533                 if (isNaN(hor_offset)) hor_offset = 0;
534                 if (isNaN(ver_offset)) ver_offset = 0;
535
536                 debug("offsets from cookies [x:y]: " + hor_offset + ":" + ver_offset);
537
538                 resize_headlines();
539
540         } catch (e) {
541                 exception_error("init_second_stage", e);
542         }
543 }
544
545 function quickMenuChange() {
546         var chooser = document.getElementById("quickMenuChooser");
547         var opid = chooser[chooser.selectedIndex].value;
548
549         chooser.selectedIndex = 0;
550         quickMenuGo(opid);
551 }
552
553 function quickMenuGo(opid) {
554         try {
555
556                 if (opid == "qmcPrefs") {
557                         gotoPreferences();
558                 }
559         
560                 if (opid == "qmcSearch") {
561                         displayDlg("search", getActiveFeedId() + ":" + activeFeedIsCat());
562                         return;
563                 }
564         
565                 if (opid == "qmcAddFeed") {
566                         displayDlg("quickAddFeed");
567                         return;
568                 }
569
570                 if (opid == "qmcEditFeed") {
571                         editFeedDlg(getActiveFeedId());
572                 }
573         
574                 if (opid == "qmcRemoveFeed") {
575                         var actid = getActiveFeedId();
576
577                         if (activeFeedIsCat()) {
578                                 alert(__("You can't unsubscribe from the category."));
579                                 return;
580                         }       
581
582                         if (!actid) {
583                                 alert(__("Please select some feed first."));
584                                 return;
585                         }
586
587                         var fn = getFeedName(actid);
588
589                         var pr = __("Unsubscribe from %s?").replace("%s", fn);
590
591                         if (confirm(pr)) {
592                                 unsubscribeFeed(actid);
593                         }
594                 
595                         return;
596                 }
597
598                 if (opid == "qmcClearFeed") {
599                         var actid = getActiveFeedId();
600
601                         if (!actid) {
602                                 alert(__("Please select some feed first."));
603                                 return;
604                         }
605
606                         if (activeFeedIsCat() || actid < 0) {
607                                 alert(__("You can't clear this type of feed."));
608                                 return;
609                         }       
610
611                         var fn = getFeedName(actid);
612
613                         var pr = __("Erase all non-starred articles in %s?").replace("%s", fn);
614
615                         if (confirm(pr)) {
616                                 clearFeedArticles(actid);
617                         }
618                 
619                         return;
620                 }
621         
622
623                 if (opid == "qmcUpdateFeeds") {
624                         scheduleFeedUpdate(true);
625                         return;
626                 }
627         
628                 if (opid == "qmcCatchupAll") {
629                         catchupAllFeeds();
630                         return;
631                 }
632         
633                 if (opid == "qmcShowOnlyUnread") {
634                         toggleDispRead();
635                         return;
636                 }
637         
638                 if (opid == "qmcAddFilter") {
639                         displayDlg("quickAddFilter", getActiveFeedId());
640                 }
641
642                 if (opid == "qmcAddLabel") {
643                         addLabel();
644                 }
645
646                 if (opid == "qmcRescoreFeed") {
647                         rescoreCurrentFeed();
648                 }
649
650                 if (opid == "qmcHKhelp") {
651                         //Element.show("hotkey_help_overlay");
652                         Effect.Appear("hotkey_help_overlay", {duration : 0.3});
653                 }
654
655                 if (opid == "qmcResetUI") {
656                         hor_offset = 0;
657                         ver_offset = 0;
658                         resize_headlines();
659                 }
660
661                 if (opid == "qmcResetCats") {
662
663                         if (confirm(__("Reset category order?"))) {
664
665                                 var query = "backend.php?op=feeds&subop=catsortreset";
666
667                                 notify_progress("Loading, please wait...", true);
668
669                                 new Ajax.Request(query, {
670                                         onComplete: function(transport) { 
671                                                 window.setTimeout('updateFeedList(false, false)', 50);
672                                         } });
673                         }
674                 }
675
676         } catch (e) {
677                 exception_error("quickMenuGo", e);
678         }
679 }
680
681 function unsubscribeFeed(feed_id, title) {
682
683
684         var msg = __("Unsubscribe from %s?").replace("%s", title);
685
686         if (title == undefined || confirm(msg)) {
687                 notify_progress("Removing feed...");
688
689                 var query = "backend.php?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
690
691                 new Ajax.Request(query, {
692                         onComplete: function(transport) {
693                                         dlg_frefresh_callback(transport, feed_id);
694                                 } });
695         }
696
697         return false;
698 }
699
700
701 function updateFeedTitle(t) {
702         active_title_text = t;
703         updateTitle();
704 }
705
706 function toggleDispRead() {
707         try {
708
709                 var hide_read_feeds = (getInitParam("hide_read_feeds") == "1");
710
711                 hide_read_feeds = !hide_read_feeds;
712
713                 debug("toggle_disp_read => " + hide_read_feeds);
714
715                 hideOrShowFeeds(hide_read_feeds);
716
717                 storeInitParam("hide_read_feeds", hide_read_feeds, true);
718                                 
719         } catch (e) {
720                 exception_error("toggleDispRead", e);
721         }
722 }
723
724 function parse_runtime_info(elem) {
725         if (!elem) {
726                 debug("parse_runtime_info: elem is null, aborting");
727                 return;
728         }
729
730         var param = elem.firstChild;
731
732         debug("parse_runtime_info: " + param);
733
734         while (param) {
735                 var k = param.getAttribute("key");
736                 var v = param.getAttribute("value");
737
738                 debug("RI: " + k + " => " + v);
739
740                 if (k == "num_feeds") {
741                         init_params[k] = v;                                     
742                 }
743
744                 if (k == "new_version_available") {
745                         var icon = document.getElementById("newVersionIcon");
746                         if (icon) {
747                                 if (v == "1") {
748                                         icon.style.display = "inline";
749                                 } else {
750                                         icon.style.display = "none";
751                                 }
752                         }
753                 }
754
755                 var error_flag;
756
757                 if (k == "daemon_is_running" && v != 1) {
758                         notify_error("<span onclick=\"javascript:explainError(1)\">Update daemon is not running.</span>", true);
759                         error_flag = true;
760                 }
761
762                 if (k == "daemon_stamp_ok" && v != 1) {
763                         notify_error("<span onclick=\"javascript:explainError(3)\">Update daemon is not updating feeds.</span>", true);
764                         error_flag = true;
765                 }
766
767                 if (!error_flag) {
768                         notify('');
769                 }
770
771 /*              var w = document.getElementById("noDaemonWarning");
772                 
773                 if (w) {
774                         if (k == "daemon_is_running" && v != 1) {
775                                 w.style.display = "block";
776                         } else {
777                                 w.style.display = "none";
778                         }
779                 } */
780                 param = param.nextSibling;
781         }
782 }
783
784 function catchupCurrentFeed() {
785
786         var fn = getFeedName(getActiveFeedId(), activeFeedIsCat());
787         
788         var str = __("Mark all articles in %s as read?").replace("%s", fn);
789
790         if (getInitParam("confirm_feed_catchup") != 1 || confirm(str)) {
791                 return viewCurrentFeed('MarkAllRead')
792         }
793 }
794
795 function catchupFeedInGroup(id) {
796
797         try {
798
799                 var title = getFeedName(id);
800
801                 var str = __("Mark all articles in %s as read?").replace("%s", title);
802
803                 if (getInitParam("confirm_feed_catchup") != 1 || confirm(str)) {
804                         return viewCurrentFeed('MarkAllReadGR:' + id)
805                 }
806
807         } catch (e) {
808                 exception_error("catchupFeedInGroup", e);
809         }
810 }
811
812 function editFeedDlg(feed) {
813         try {
814
815                 if (!feed) {
816                         alert(__("Please select some feed first."));
817                         return;
818                 }
819         
820                 if ((feed <= 0) || activeFeedIsCat() || tagsAreDisplayed()) {
821                         alert(__("You can't edit this kind of feed."));
822                         return;
823                 }
824         
825                 var query = "";
826         
827                 if (feed > 0) {
828                         query = "backend.php?op=pref-feeds&subop=editfeed&id=" +        param_escape(feed);
829                 } else {
830                         query = "backend.php?op=pref-labels&subop=edit&id=" +   param_escape(-feed-11);
831                 }
832
833                 disableHotkeys();
834
835                 new Ajax.Request(query, {
836                         onComplete: function(transport) { 
837                                 infobox_callback2(transport); 
838                         } });
839
840         } catch (e) {
841                 exception_error("editFeedDlg", e);
842         }
843 }
844
845 /* this functions duplicate those of prefs.js feed editor, with
846         some differences because there is no feedlist */
847
848 function feedEditCancel() {
849         closeInfoBox();
850         return false;
851 }
852
853 function feedEditSave() {
854
855         try {
856         
857                 // FIXME: add parameter validation
858
859                 var query = Form.serialize("edit_feed_form");
860
861                 notify_progress("Saving feed...");
862
863                 new Ajax.Request("backend.php", {
864                         parameters: query,
865                         onComplete: function(transport) { 
866                                 dlg_frefresh_callback(transport); 
867                         } });
868
869
870                 closeInfoBox();
871
872                 return false;
873
874         } catch (e) {
875                 exception_error("feedEditSave (main)", e);
876         } 
877 }
878
879 function clearFeedArticles(feed_id) {
880
881         notify_progress("Clearing feed...");
882
883         var query = "backend.php?op=pref-feeds&quiet=1&subop=clear&id=" + feed_id;
884
885         new Ajax.Request(query, {
886                 onComplete: function(transport) {
887                                 dlg_frefresh_callback(transport, feed_id);
888                         } });
889
890         return false;
891 }
892
893 function collapse_feedlist() {
894         try {
895                 debug("toggle_feedlist");
896                 
897                 var theme = getInitParam("theme");
898                 if (theme != "" && theme != "compact" && theme != "graycube" &&
899                                 theme != "compat") return;
900
901                 var fl = document.getElementById("feeds-holder");
902                 var fh = document.getElementById("headlines-frame");
903                 var fc = document.getElementById("content-frame");
904                 var ft = document.getElementById("toolbar");
905                 var ff = document.getElementById("footer");
906                 var fhdr = document.getElementById("header");
907                 var fbtn = document.getElementById("collapse_feeds_btn");
908
909                 if (!Element.visible(fl)) {
910                         Element.show(fl);
911                         fbtn.value = "<<";
912
913                         if (theme != "graycube") {
914
915                                 fh.style.left = fl.offsetWidth + "px";
916                                 ft.style.left = fl.offsetWidth + "px";
917                                 if (fc) fc.style.left = fl.offsetWidth + "px";
918                                 if (ff && theme != "compat") ff.style.left = (fl.offsetWidth-1) + "px";
919
920                                 if (theme == "compact") fhdr.style.left = (fl.offsetWidth + 10) + "px";
921                         } else {
922                                 fh.style.left = fl.offsetWidth + 40 + "px";
923                                 ft.style.left = fl.offsetWidth + 40 +"px";
924                                 if (fc) fc.style.left = fl.offsetWidth + 40 + "px";
925                         }
926
927                         setCookie("ttrss_vf_fclps", "0");
928
929                 } else {
930                         Element.hide(fl);
931                         fbtn.value = ">>";
932
933                         if (theme != "graycube") {
934
935                                 fh.style.left = "0px";
936                                 ft.style.left = "0px";
937                                 if (fc) fc.style.left = "0px";
938                                 if (ff) ff.style.left = "0px";
939
940                                 if (theme == "compact") fhdr.style.left = "10px";
941
942                         } else {
943                                 fh.style.left = "20px";
944                                 ft.style.left = "20px";
945                                 if (fc) fc.style.left = "20px";
946
947                         }
948
949                         setCookie("ttrss_vf_fclps", "1");
950                 }
951         } catch (e) {
952                 exception_error("toggle_feedlist", e);
953         }
954 }
955
956 function viewModeChanged() {
957         cache_empty();
958         return viewCurrentFeed(0, '')
959 }
960
961 function viewLimitChanged() {
962         cache_empty();
963         return viewCurrentFeed(0, '')
964 }
965
966 /* function adjustArticleScore(id, score) {
967         try {
968
969                 var pr = prompt(__("Assign score to article:"), score);
970
971                 if (pr != undefined) {
972                         var query = "backend.php?op=rpc&subop=setScore&id=" + id + "&score=" + pr;
973
974                         new Ajax.Request(query, {
975                         onComplete: function(transport) {
976                                         viewCurrentFeed();
977                                 } });
978
979                 }
980         } catch (e) {
981                 exception_error("adjustArticleScore", e);
982         }
983 } */
984
985 function rescoreCurrentFeed() {
986
987         var actid = getActiveFeedId();
988
989         if (activeFeedIsCat() || actid < 0 || tagsAreDisplayed()) {
990                 alert(__("You can't rescore this kind of feed."));
991                 return;
992         }       
993
994         if (!actid) {
995                 alert(__("Please select some feed first."));
996                 return;
997         }
998
999         var fn = getFeedName(actid);
1000         var pr = __("Rescore articles in %s?").replace("%s", fn);
1001
1002         if (confirm(pr)) {
1003                 notify_progress("Rescoring articles...");
1004
1005                 var query = "backend.php?op=pref-feeds&subop=rescore&quiet=1&ids=" + actid;
1006
1007                 new Ajax.Request(query, {
1008                 onComplete: function(transport) {
1009                         viewCurrentFeed();
1010                 } });
1011         }
1012 }
1013
1014 function hotkey_handler(e) {
1015
1016         try {
1017
1018                 var keycode;
1019                 var shift_key = false;
1020
1021                 var feedlist = document.getElementById('feedList');
1022
1023                 try {
1024                         shift_key = e.shiftKey;
1025                 } catch (e) {
1026
1027                 }
1028         
1029                 if (window.event) {
1030                         keycode = window.event.keyCode;
1031                 } else if (e) {
1032                         keycode = e.which;
1033                 }
1034
1035                 var keychar = String.fromCharCode(keycode);
1036
1037                 if (keycode == 27) { // escape
1038                         if (Element.visible("hotkey_help_overlay")) {
1039                                 Element.hide("hotkey_help_overlay");
1040                         }
1041                         hotkey_prefix = false;
1042                         closeInfoBox();
1043                 } 
1044
1045                 if (!hotkeys_enabled) {
1046                         debug("hotkeys disabled");
1047                         return;
1048                 }
1049
1050                 if (keycode == 16) return; // ignore lone shift
1051
1052                 if ((keycode == 70 || keycode == 67 || keycode == 71) 
1053                                 && !hotkey_prefix) {
1054
1055                         hotkey_prefix = keycode;
1056                         debug("KP: PREFIX=" + keycode + " CHAR=" + keychar);
1057                         return true;
1058                 }
1059
1060                 if (Element.visible("hotkey_help_overlay")) {
1061                         Element.hide("hotkey_help_overlay");
1062                 }
1063
1064                 /* Global hotkeys */
1065
1066                 if (!hotkey_prefix) {
1067
1068                         if (keycode == 68 && shift_key) { // d
1069                                 if (!Element.visible("debug_output")) {
1070                                         Element.show("debug_output");
1071                                         debug('debug mode activated');
1072                                 } else {
1073                                         Element.hide("debug_output");
1074                                 }
1075         
1076                                 return;
1077                         }
1078         
1079                         if ((keycode == 191 || keychar == '?') && shift_key) { // ?
1080                                 if (!Element.visible("hotkey_help_overlay")) {
1081                                         //Element.show("hotkey_help_overlay");
1082                                         Effect.Appear("hotkey_help_overlay", {duration : 0.3});
1083                                 } else {
1084                                         Element.hide("hotkey_help_overlay");
1085                                 }
1086                                 return false;
1087                         }
1088
1089                         if (keycode == 191 || keychar == '/') { // /
1090                                 displayDlg("search", getActiveFeedId() + ":" + activeFeedIsCat());
1091                                 return false;
1092                         }
1093
1094                         if (keycode == 82 && shift_key) { // R
1095                                 scheduleFeedUpdate(true);
1096                                 return;
1097                         }
1098
1099                         if (keycode == 74) { // j
1100                                 var feed = getActiveFeedId();
1101                                 var new_feed = getRelativeFeedId2(feed, activeFeedIsCat(), 'prev');
1102 //                              alert(feed + " IC: " + activeFeedIsCat() + " => " + new_feed);
1103                                 if (new_feed) {
1104                                         var is_cat = new_feed.match("CAT:");
1105                                         if (is_cat) {
1106                                                 new_feed = new_feed.replace("CAT:", "");
1107                                                 viewCategory(new_feed);
1108                                         } else {
1109                                                 viewfeed(new_feed, '', false);
1110                                         }
1111                                 }
1112                                 return;
1113                         }
1114         
1115                         if (keycode == 75) { // k
1116                                 var feed = getActiveFeedId();
1117                                 var new_feed = getRelativeFeedId2(feed, activeFeedIsCat(), 'next');
1118 //                              alert(feed + " IC: " + activeFeedIsCat() + " => " + new_feed);
1119                                 if (new_feed) {
1120                                         var is_cat = new_feed.match("CAT:");
1121                                         if (is_cat == "CAT:") {
1122                                                 new_feed = new_feed.replace("CAT:", "");
1123                                                 viewCategory(new_feed);
1124                                         } else {
1125                                                 viewfeed(new_feed, '', false);
1126                                         }
1127                                 }
1128                                 return;
1129                         }
1130
1131                         if (shift_key && keycode == 40) { // shift-down
1132                                 catchupRelativeToArticle(1);
1133                                 return;
1134                         }
1135
1136                         if (shift_key && keycode == 38) { // shift-up
1137                                 catchupRelativeToArticle(0);
1138                                 return;
1139                         }
1140
1141                         if (shift_key && keycode == 78) { // N
1142                                 scrollArticle(50);      
1143                                 return;
1144                         }
1145
1146                         if (shift_key && keycode == 80) { // P
1147                                 scrollArticle(-50);     
1148                                 return;
1149                         }
1150
1151
1152                         if (keycode == 78 || keycode == 40) { // n, down
1153                                 if (typeof moveToPost != 'undefined') {
1154                                         moveToPost('next');
1155                                         return;
1156                                 }
1157                         }
1158         
1159                         if (keycode == 80 || keycode == 38) { // p, up
1160                                 if (typeof moveToPost != 'undefined') {
1161                                         moveToPost('prev');
1162                                         return;
1163                                 }
1164                         }
1165
1166                         if (keycode == 83 && shift_key) { // S
1167                                 var id = getActiveArticleId();
1168                                 if (id) {                               
1169                                         togglePub(id);
1170                                 }
1171                                 return;
1172                         }
1173
1174                         if (keycode == 83) { // s
1175                                 var id = getActiveArticleId();
1176                                 if (id) {                               
1177                                         toggleMark(id);
1178                                 }
1179                                 return;
1180                         }
1181
1182
1183                         if (keycode == 85) { // u
1184                                 var id = getActiveArticleId();
1185                                 if (id) {                               
1186                                         toggleUnread(id);
1187                                 }
1188                                 return;
1189                         }
1190
1191                         if (keycode == 84 && shift_key) { // T
1192                                 var id = getActiveArticleId();
1193                                 if (id) {
1194                                         editArticleTags(id, getActiveFeedId(), isCdmMode());
1195                                         return;
1196                                 }
1197                         }
1198
1199                         if (keycode == 9) { // tab
1200                                 var id = getArticleUnderPointer();
1201                                 if (id) {                               
1202                                         var cb = document.getElementById("RCHK-" + id);
1203
1204                                         if (cb) {
1205                                                 cb.checked = !cb.checked;
1206                                                 toggleSelectRowById(cb, "RROW-" + id);
1207                                                 return false;
1208                                         }
1209                                 }
1210                         }
1211
1212                         if (keycode == 79) { // o
1213                                 if (getActiveArticleId()) {
1214                                         openArticleInNewWindow(getActiveArticleId());
1215                                         return;
1216                                 }
1217                         }
1218
1219                         if (keycode == 81 && shift_key) { // Q
1220                                 if (typeof catchupAllFeeds != 'undefined') {
1221                                         catchupAllFeeds();
1222                                         return;
1223                                 }
1224                         }
1225
1226                         if (keycode == 88) { // x
1227                                 if (activeFeedIsCat()) {
1228                                         toggleCollapseCat(getActiveFeedId());
1229                                 }
1230                         }
1231                 }
1232
1233                 /* Prefix f */
1234
1235                 if (hotkey_prefix == 70) { // f 
1236
1237                         hotkey_prefix = false;
1238
1239                         if (keycode == 81) { // q
1240                                 if (getActiveFeedId()) {
1241                                         catchupCurrentFeed();
1242                                         return;
1243                                 }
1244                         }
1245
1246                         if (keycode == 82) { // r
1247                                 if (getActiveFeedId()) {
1248                                         viewfeed(getActiveFeedId(), "ForceUpdate", activeFeedIsCat());
1249                                         return;
1250                                 }
1251                         }
1252
1253                         if (keycode == 65) { // a
1254                                 toggleDispRead();
1255                                 return false;
1256                         }
1257
1258                         if (keycode == 85 && shift_key) { // U
1259                                 scheduleFeedUpdate(true);
1260                                 return false;
1261                         }
1262
1263                         if (keycode == 85) { // u
1264                                 if (getActiveFeedId()) {
1265                                         viewfeed(getActiveFeedId(), "ForceUpdate");
1266                                         return false;
1267                                 }
1268                         }
1269
1270                         if (keycode == 69) { // e
1271                                 editFeedDlg(getActiveFeedId());
1272                                 return false;
1273                         }
1274
1275                         if (keycode == 83) { // s
1276                                 displayDlg("quickAddFeed");
1277                                 return false;
1278                         }
1279
1280                         if (keycode == 67 && shift_key) { // C
1281                                 if (typeof catchupAllFeeds != 'undefined') {
1282                                         catchupAllFeeds();
1283                                         return false;
1284                                 }
1285                         }
1286
1287                         if (keycode == 67) { // c
1288                                 if (getActiveFeedId()) {
1289                                         catchupCurrentFeed();
1290                                         return false;
1291                                 }
1292                         }
1293
1294                         if (keycode == 87) { // w
1295                                 feeds_sort_by_unread = !feeds_sort_by_unread;
1296                                 return resort_feedlist();
1297                         }
1298
1299                         if (keycode == 72) { // h
1300                                 hideReadHeadlines();
1301                                 return;
1302                         }
1303
1304                 }
1305
1306                 /* Prefix c */
1307
1308                 if (hotkey_prefix == 67) { // c
1309                         hotkey_prefix = false;
1310
1311                         if (keycode == 70) { // f
1312                                 displayDlg("quickAddFilter", getActiveFeedId());
1313                                 return false;
1314                         }
1315
1316                         if (keycode == 76) { // l
1317                                 addLabel();
1318                                 return false;
1319                         }
1320
1321                         if (keycode == 83) { // s
1322                                 if (typeof collapse_feedlist != 'undefined') {
1323                                         collapse_feedlist();
1324                                         return false;
1325                                 }
1326                         }
1327
1328                         if (keycode == 77) { // m
1329                                 feedlist_sortable_enabled = !feedlist_sortable_enabled;
1330                                 if (feedlist_sortable_enabled) {
1331                                         notify_info("Category reordering enabled");
1332                                         toggle_sortable_feedlist(true);
1333                                 } else {
1334                                         notify_info("Category reordering disabled");
1335                                         toggle_sortable_feedlist(false);
1336                                 }
1337                         }
1338
1339                         if (keycode == 78) { // n
1340                                 catchupRelativeToArticle(1);
1341                                 return;
1342                         }
1343
1344                         if (keycode == 80) { // p
1345                                 catchupRelativeToArticle(0);
1346                                 return;
1347                         }
1348
1349
1350                 }
1351
1352                 /* Prefix g */
1353
1354                 if (hotkey_prefix == 71) { // g
1355
1356                         hotkey_prefix = false;
1357
1358
1359                         if (keycode == 65) { // a
1360                                 viewfeed(-4);
1361                                 return false;
1362                         }
1363
1364                         if (keycode == 83) { // s
1365                                 viewfeed(-1);
1366                                 return false;
1367                         }
1368
1369                         if (keycode == 80 && shift_key) { // P
1370                                 gotoPreferences();
1371                                 return false;
1372                         }
1373
1374                         if (keycode == 80) { // p
1375                                 viewfeed(-2);
1376                                 return false;
1377                         }
1378
1379                         if (keycode == 70) { // f
1380                                 viewfeed(-3);
1381                                 return false;
1382                         }
1383
1384                         if (keycode == 84 && shift_key) { // T
1385                                 toggleTags();
1386                                 return false;
1387                         }
1388                 }
1389
1390                 /* Cmd */
1391
1392                 if (hotkey_prefix == 224 || hotkey_prefix == 91) { // f 
1393                         hotkey_prefix = false;
1394                         return;
1395                 }
1396
1397                 if (hotkey_prefix) {
1398                         debug("KP: PREFIX=" + hotkey_prefix + " CODE=" + keycode + " CHAR=" + keychar);
1399                 } else {
1400                         debug("KP: CODE=" + keycode + " CHAR=" + keychar);
1401                 }
1402
1403
1404         } catch (e) {
1405                 exception_error("hotkey_handler", e);
1406         }
1407 }
1408
1409 function feedsSortByUnread() {
1410         return feeds_sort_by_unread;
1411 }
1412
1413 function addLabel() {
1414
1415         try {
1416
1417                 var caption = prompt(__("Please enter label caption:"), "");
1418
1419                 if (caption != undefined) {
1420         
1421                         if (caption == "") {
1422                                 alert(__("Can't create label: missing caption."));
1423                                 return false;
1424                         }
1425
1426                         var query = "backend.php?op=pref-labels&subop=add&caption=" + 
1427                                 param_escape(caption);
1428
1429                         notify_progress("Loading, please wait...", true);
1430
1431                         new Ajax.Request(query, {
1432                                 onComplete: function(transport) { 
1433                                         updateFeedList();
1434                         } });
1435
1436                 }
1437
1438         } catch (e) {
1439                 exception_error("addLabel", e);
1440         }
1441 }
1442
1443 function visitOfficialSite() {
1444         window.open("http://tt-rss.org/");
1445 }
1446
1447
1448 function feedBrowserSubscribe() {
1449         try {
1450
1451                 var selected = getSelectedFeedsFromBrowser();
1452
1453                 if (selected.length > 0) {
1454                         closeInfoBox();
1455
1456                         notify_progress("Loading, please wait...", true);
1457
1458                         var query =  "backend.php?op=pref-feeds&subop=massSubscribe&ids="+
1459                                 param_escape(selected.toString());
1460
1461                         new Ajax.Request(query, {
1462                                 onComplete: function(transport) { 
1463                                         updateFeedList();
1464                                 } });
1465
1466                 } else {
1467                         alert(__("No feeds are selected."));
1468                 }
1469
1470         } catch (e) {
1471                 exception_error("feedBrowserSubscribe", e);
1472         }
1473 }
1474
1475 function init_gears() {
1476         try {
1477
1478                 if (google.gears) {
1479                         localServer = google.gears.factory.create("beta.localserver");
1480                         store = localServer.createManagedStore("tt-rss");
1481                         db = google.gears.factory.create('beta.database');
1482                         db.open('tt-rss');
1483
1484                         db.execute("CREATE TABLE IF NOT EXISTS cache (id text, article text, param text, added text)");
1485                 }       
1486         
1487                 cache_expire();
1488
1489         } catch (e) {
1490                 exception_error("init_gears", e);
1491         }
1492 }
1493
1494 function init_offline() {
1495         try {
1496                 offline_mode = true;
1497
1498                 render_feedlist(cache_find("FEEDLIST"));
1499                 document.getElementById("quickMenuChooser").disabled = true;
1500
1501                 remove_splash();
1502         } catch (e) {
1503                 exception_error("init_offline", e);
1504         }
1505 }
1506