plugins/digest/digest.js

   1 var last_feeds = [];
   2 var init_params = {};
   3 var hotkeys_map = false;
   4 var hotkey_prefix = false;
   5
   6 var _active_feed_id = false;
   7 var _update_timeout = false;
   8 var _view_update_timeout = false;
   9 var _feedlist_expanded = false;
  10 var _update_seq = 1;
  11
  12 function article_appear(article_id) {
  13         try {
  14                 new Effect.Appear('A-' + article_id);
  15         } catch (e) {
  16                 exception_error("article_appear", e);
  17         }
  18 }
  19
  20 function catchup_feed(feed_id, callback) {
  21         try {
  22
  23                 var fn = find_feed(last_feeds, feed_id).title;
  24
  25                 if (confirm(__("Mark all articles in %s as read?").replace("%s", fn))) {
  26
  27                         var is_cat = "";
  28
  29                         if (feed_id < 0) is_cat = "true"; // KLUDGE
  30
  31                         var query = "?op=rpc&method=catchupFeed&feed_id=" +
  32                                 feed_id + "&is_cat=" + is_cat;
  33
  34                         new Ajax.Request("backend.php", {
  35                                 parameters: query,
  36                                 onComplete: function(transport) {
  37                                         if (callback) callback(transport);
  38
  39                                         update();
  40                                 } });
  41                 }
  42
  43         } catch (e) {
  44                 exception_error("catchup_article", e);
  45         }
  46 }
  47
  48 function get_visible_article_ids() {
  49         try {
  50                 var elems = $("headlines-content").getElementsByTagName("LI");
  51                 var ids = [];
  52
  53                 for (var i = 0; i < elems.length; i++) {
  54                         if (elems[i].id && elems[i].id.match("A-")) {
  55                         ids.push(elems[i].id.replace("A-", ""));
  56                         }
  57                 }
  58
  59                 return ids;
  60
  61         } catch (e) {
  62                 exception_error("get_visible_article_ids", e);
  63         }
  64 }
  65
  66 function catchup_visible_articles(callback) {
  67         try {
  68
  69                 var ids = get_visible_article_ids();
  70
  71                 if (confirm(__("Mark %d displayed articles as read?").replace("%d", ids.length))) {
  72
  73                         var query = "?op=rpc&method=catchupSelected" +
  74                                 "&cmode=0&ids=" + param_escape(ids);
  75
  76                         new Ajax.Request("backend.php", {
  77                                 parameters: query,
  78                                 onComplete: function(transport) {
  79                                         if (callback) callback(transport);
  80
  81                                         viewfeed(_active_feed_id, 0);
  82                                 } });
  83
  84                         }
  85
  86         } catch (e) {
  87                 exception_error("catchup_visible_articles", e);
  88         }
  89 }
  90
  91 function catchup_article(article_id, callback) {
  92         try {
  93                 var query = "?op=rpc&method=catchupSelected" +
  94                         "&cmode=0&ids=" + article_id;
  95
  96                 new Ajax.Request("backend.php", {
  97                         parameters: query,
  98                         onComplete: function(transport) {
  99                                 if (callback) callback(transport);
 100                         } });
 101
 102         } catch (e) {
 103                 exception_error("catchup_article", e);
 104         }
 105 }
 106
 107 function set_selected_article(article_id) {
 108         try {
 109                 $$("#headlines-content > li[id*=A-]").each(function(article) {
 110                                 var id = article.id.replace("A-", "");
 111
 112                                 var cb = article.getElementsByTagName("INPUT")[0];
 113
 114                                 if (id == article_id) {
 115                                         article.addClassName("selected");
 116                                         cb.checked = true;
 117                                 } else {
 118                                         article.removeClassName("selected");
 119                                         cb.checked = false;
 120                                 }
 121
 122                 });
 123
 124         } catch (e) {
 125                 exception_error("mark_selected_feed", e);
 126         }
 127 }
 128
 129
 130 function set_selected_feed(feed_id) {
 131         try {
 132                 var feeds = $("feeds-content").getElementsByTagName("LI");
 133
 134                 for (var i = 0; i < feeds.length; i++) {
 135                         if (feeds[i].id == "F-" + feed_id)
 136                                 feeds[i].className = "selected";
 137                         else
 138                                 feeds[i].className = "";
 139                 }
 140
 141                 _active_feed_id = feed_id;
 142
 143         } catch (e) {
 144                 exception_error("mark_selected_feed", e);
 145         }
 146 }
 147
 148 function load_more() {
 149         try {
 150                 var pr = $("H-LOADING-IMG");
 151
 152                 if (pr) Element.show(pr);
 153
 154                 var offset = $$("#headlines-content > li[id*=A-][class*=fresh],li[id*=A-][class*=unread]").length;
 155
 156                 viewfeed(false, offset, false, false, true,
 157                         function() {
 158                                 var pr = $("H-LOADING-IMG");
 159
 160                                 if (pr) Element.hide(pr);
 161                         });
 162         } catch (e) {
 163                 exception_error("load_more", e);
 164         }
 165 }
 166
 167 function update(callback) {
 168         try {
 169                 console.log('updating feeds...');
 170
 171                 window.clearTimeout(_update_timeout);
 172
 173                 new Ajax.Request("backend.php", {
 174                         parameters: "?op=digest&method=digestinit",
 175                         onComplete: function(transport) {
 176                                 fatal_error_check(transport);
 177                                 parse_feeds(transport);
 178                                 set_selected_feed(_active_feed_id);
 179
 180                                 if (callback) callback(transport);
 181                                 } });
 182
 183                 _update_timeout = window.setTimeout('update()', 5*1000);
 184         } catch (e) {
 185                 exception_error("update", e);
 186         }
 187 }
 188
 189 function remove_headline_entry(article_id) {
 190         try {
 191                 var elem = $('A-' + article_id);
 192
 193                 if (elem) {
 194                         elem.parentNode.removeChild(elem);
 195                 }
 196
 197         } catch (e) {
 198                 exception_error("remove_headline_entry", e);
 199         }
 200 }
 201
 202 function view_update() {
 203         try {
 204                 viewfeed(_active_feed_id, _active_feed_offset, false, true, true);
 205                 update();
 206         } catch (e) {
 207                 exception_error("view_update", e);
 208         }
 209 }
 210
 211 function view(article_id) {
 212         try {
 213                 $("content").addClassName("move");
 214
 215                 var a = $("A-" + article_id);
 216                 var h = $("headlines");
 217
 218                 setTimeout(function() {
 219                         // below or above viewport, reposition headline
 220                         if (a.offsetTop > h.scrollTop + h.offsetHeight || a.offsetTop+a.offsetHeight < h.scrollTop+a.offsetHeight)
 221                                 h.scrollTop = a.offsetTop - (h.offsetHeight/2 - a.offsetHeight/2);
 222                         }, 500);
 223
 224                 new Ajax.Request("backend.php", {
 225                         parameters: "?op=digest&method=digestgetcontents&article_id=" +
 226                                 article_id,
 227                         onComplete: function(transport) {
 228                                 fatal_error_check(transport);
 229
 230                                 var reply = JSON.parse(transport.responseText);
 231
 232                                 if (reply) {
 233                                         var article = reply['article'];
 234
 235                                         var mark_part = "";
 236                                         var publ_part = "";
 237
 238                                         var tags_part = "";
 239
 240                                         if (article.tags.length > 0) {
 241                                                 tags_part = " " + __("in") + " ";
 242
 243                                                 for (var i = 0; i < Math.min(5, article.tags.length); i++) {
 244                                                         //tags_part += "<a href=\"#\" onclick=\"viewfeed('" +
 245                                                         //              article.tags[i] + "')\">" +
 246                                                         //      article.tags[i] + "</a>, ";
 247
 248                                                         tags_part += article.tags[i] + ", ";
 249                                                 }
 250
 251                                                 tags_part = tags_part.replace(/, $/, "");
 252                                                 tags_part = "<span class=\"tags\">" + tags_part + "</span>";
 253
 254                                         }
 255
 256                                         if (article.marked)
 257                                                 mark_part = "<img title='"+ __("Unstar article")+"' onclick=\"toggle_mark(this, "+article.id+")\" src='images/mark_set.svg'>";
 258                                         else
 259                                                 mark_part =     "<img title='"+__("Star article")+"' onclick=\"toggle_mark(this, "+article.id+")\" src='images/mark_unset.svg'>";
 260
 261                                         if (article.published)
 262                                                 publ_part = "<img title='"+__("Unpublish article")+"' onclick=\"toggle_pub(this, "+article.id+")\" src='images/pub_set.svg'>";
 263                                         else
 264                                                 publ_part =     "<img title='"+__("Publish article")+"' onclick=\"toggle_pub(this, "+article.id+")\" src='images/pub_unset.svg'>";
 265
 266                                         var tmp = "<div id=\"inner\">" +
 267                                                 "<div id=\"ops\">" +
 268                                                 mark_part +
 269                                                 publ_part +
 270                                                 "</div>" +
 271                                                 "<h1>" + "<a target=\"_blank\" href=\""+article.url+"\">" +
 272                                                         article.title + "</a>" + "</h1>" +
 273                                                 "<div id=\"tags\">" +
 274                                                 tags_part +
 275                                                 "</div>" +
 276                                                 article.content + "</div>";
 277
 278                                         $("article-content").innerHTML = tmp;
 279                                         $("article").addClassName("visible");
 280
 281                                         set_selected_article(article.id);
 282
 283                                         catchup_article(article_id,
 284                                                 function() {
 285                                                         $("A-" + article_id).addClassName("read");
 286                                         });
 287
 288                                 } else {
 289                                         elem.innerHTML = __("Error: unable to load article.");
 290                                 }
 291                         }
 292                 });
 293
 294
 295                 return false;
 296         } catch (e) {
 297                 exception_error("view", e);
 298         }
 299 }
 300
 301 function close_article() {
 302         $("content").removeClassName("move");
 303         $("article").removeClassName("visible");
 304 }
 305
 306 function viewfeed(feed_id, offset, replace, no_effects, no_indicator, callback) {
 307         try {
 308
 309                 if (!feed_id) feed_id = _active_feed_id;
 310                 if (offset == undefined) offset = 0;
 311                 if (replace == undefined) replace = (offset == 0);
 312
 313                 _update_seq = _update_seq + 1;
 314
 315                 if (!offset) $("headlines").scrollTop = 0;
 316
 317                 var query = "backend.php?op=digest&method=digestupdate&feed_id=" +
 318                                 param_escape(feed_id) + "&offset=" + offset +
 319                                 "&seq=" + _update_seq;
 320
 321                 console.log(query);
 322
 323                 var img = false;
 324
 325                 if ($("F-" + feed_id)) {
 326                         img = $("F-" + feed_id).getElementsByTagName("IMG")[0];
 327
 328                         if (img && !no_indicator) {
 329                                 img.setAttribute("orig_src", img.src);
 330                                 img.src = 'images/indicator_tiny.gif';
 331                         }
 332                 }
 333
 334                 new Ajax.Request("backend.php", {
 335                         parameters: query,
 336                         onComplete: function(transport) {
 337                                 Element.hide("overlay");
 338
 339                                 fatal_error_check(transport);
 340                                 parse_headlines(transport, replace, no_effects);
 341                                 set_selected_feed(feed_id);
 342                                 _active_feed_offset = offset;
 343
 344                                 if (img && !no_indicator)
 345                                         img.src = img.getAttribute("orig_src");
 346
 347                                 if (callback) callback(transport);
 348
 349                         } });
 350
 351         } catch (e) {
 352                 exception_error("view", e);
 353         }
 354 }
 355
 356 function find_article(articles, article_id) {
 357         try {
 358                 for (var i = 0; i < articles.length; i++) {
 359                         if (articles[i].id == article_id)
 360                                 return articles[i];
 361                 }
 362
 363                 return false;
 364
 365         } catch (e) {
 366                 exception_error("find_article", e);
 367         }
 368 }
 369
 370 function find_feed(feeds, feed_id) {
 371         try {
 372                 for (var i = 0; i < feeds.length; i++) {
 373                         if (feeds[i].id == feed_id)
 374                                 return feeds[i];
 375                 }
 376
 377                 return false;
 378
 379         } catch (e) {
 380                 exception_error("find_feed", e);
 381         }
 382 }
 383
 384 function get_feed_icon(feed) {
 385         try {
 386                 if (feed.has_icon)
 387                         return getInitParam('icons_url') + "/" + feed.id + '.ico';
 388
 389                 if (feed.id == -1)
 390                         return 'images/mark_set.svg';
 391
 392                 if (feed.id == -2)
 393                         return 'images/pub_set.svg';
 394
 395                 if (feed.id == -3)
 396                         return 'images/fresh.png';
 397
 398                 if (feed.id == -4)
 399                         return 'images/tag.png';
 400
 401                 if (feed.id < -10)
 402                         return 'images/label.png';
 403
 404                 return 'images/blank_icon.gif';
 405
 406         } catch (e) {
 407                 exception_error("get_feed_icon", e);
 408         }
 409 }
 410
 411 function add_feed_entry(feed) {
 412         try {
 413                 var icon_part = "";
 414
 415                 icon_part = "<img src='" + get_feed_icon(feed) + "'/>";
 416
 417                 var title = (feed.title.length > 30) ?
 418                         feed.title.substring(0, 30) + "&hellip;" :
 419                         feed.title;
 420
 421                 var tmp_html = "<li id=\"F-"+feed.id+"\" onclick=\"viewfeed("+feed.id+")\">" +
 422                         "<div class='unread-ctr'>" + "<span class=\"unread\">" + feed.unread + "</span></div>" +
 423                         icon_part + title +
 424                         "</li>";
 425
 426                 $("feeds-content").innerHTML += tmp_html;
 427
 428
 429         } catch (e) {
 430                 exception_error("add_feed_entry", e);
 431         }
 432 }
 433
 434 function add_headline_entry(article, feed, no_effects) {
 435         try {
 436
 437                 var icon_part = "";
 438
 439                 icon_part = "<img class='icon' src='" + get_feed_icon(feed) + "'/>";
 440
 441
 442                 var style = "";
 443
 444                 //if (!no_effects) style = "style=\"display : none\"";
 445
 446                 if (article.excerpt.trim() == "")
 447                         article.excerpt = __("Click to expand article.");
 448
 449                 var li_class = "unread";
 450
 451                 var fresh_max = getInitParam("fresh_article_max_age") * 60 * 60;
 452                 var d = new Date();
 453
 454                 if (d.getTime() / 1000 - article.updated < fresh_max)
 455                         li_class = "fresh";
 456
 457                 //"<img title='" + __("Mark as read") + "' onclick=\"view("+article.id+", true)\" src='images/digest_checkbox.png'>" +
 458
 459                 var checkbox_part = "<input type=\"checkbox\" class=\"cb\" onclick=\"toggle_select_article(this)\"/>";
 460
 461                 var date = new Date(article.updated * 1000);
 462
 463                 var date_part = date.toString().substring(0,21);
 464
 465                 var tmp_html = "<li id=\"A-"+article.id+"\" "+style+" class=\""+li_class+"\">" +
 466                         checkbox_part +
 467                         icon_part +
 468                         "<a target=\"_blank\" href=\""+article.link+"\""+
 469                                 "onclick=\"return view("+article.id+")\" class='title'>" +
 470                                 article.title + "</a>" +
 471                         "<div class='body'>" +
 472                         "<div onclick=\"view("+article.id+")\" class='excerpt'>" +
 473                                 article.excerpt + "</div>" +
 474                         "<div onclick=\"view("+article.id+")\" class='info'>";
 475
 476 /*              tmp_html += "<a href=\#\" onclick=\"viewfeed("+feed.id+")\">" +
 477                                         feed.title + "</a> " + " @ "; */
 478
 479                 tmp_html += date_part + "</div>" +
 480                         "</div></li>";
 481
 482                 $("headlines-content").innerHTML += tmp_html;
 483
 484                 if (!no_effects)
 485                         window.setTimeout('article_appear(' + article.id + ')', 100);
 486
 487         } catch (e) {
 488                 exception_error("add_headline_entry", e);
 489         }
 490 }
 491
 492 function expand_feeds() {
 493         try {
 494                 _feedlist_expanded = true;
 495
 496                 redraw_feedlist(last_feeds);
 497
 498         } catch (e) {
 499                 exception_error("expand_feeds", e);
 500         }
 501 }
 502
 503 function redraw_feedlist(feeds) {
 504         try {
 505
 506                 $('feeds-content').innerHTML = "";
 507
 508                 var limit = 10;
 509
 510                 if (_feedlist_expanded) limit = feeds.length;
 511
 512                 for (var i = 0; i < Math.min(limit, feeds.length); i++) {
 513                         add_feed_entry(feeds[i]);
 514                 }
 515
 516                 if (feeds.length > limit) {
 517                         $('feeds-content').innerHTML += "<li id='F-MORE-PROMPT'>" +
 518                                 "<img src='images/blank_icon.gif'>" +
 519                                 "<a href=\"#\" onclick=\"expand_feeds()\">" +
 520                                 __("%d more...").replace("%d", feeds.length-10) +
 521                                 "</a>" + "</li>";
 522                 }
 523
 524                 if (feeds.length == 0) {
 525                         $('feeds-content').innerHTML =
 526                                 "<div class='insensitive' style='text-align : center'>" +
 527                                         __("No unread feeds.") + "</div>";
 528                 }
 529
 530                 if (_active_feed_id)
 531                         set_selected_feed(_active_feed_id);
 532
 533         } catch (e) {
 534                 exception_error("redraw_feedlist", e);
 535         }
 536 }
 537
 538 function parse_feeds(transport) {
 539         try {
 540                 var reply = JSON.parse(transport.responseText);
 541
 542                 if (!reply) return;
 543
 544                 var feeds = reply['feeds'];
 545
 546                 if (feeds) {
 547
 548                         feeds.sort( function (a,b)
 549                                 {
 550                                         if (b.unread != a.unread)
 551                                                 return (b.unread - a.unread);
 552                                         else
 553                                                 if (a.title > b.title)
 554                                                         return 1;
 555                                                 else if (a.title < b.title)
 556                                                         return -1;
 557                                                 else
 558                                                         return 0;
 559                                 });
 560
 561                         var all_articles = find_feed(feeds, -4);
 562
 563                         update_title(all_articles.unread);
 564
 565                         last_feeds = feeds;
 566
 567                         redraw_feedlist(feeds);
 568                 }
 569
 570                 if (reply['hotkeys']) {
 571                         hotkeys_map = reply['hotkeys'];
 572                 }
 573
 574         } catch (e) {
 575                 console.log(e);
 576                 //exception_error("parse_feeds", e);
 577         }
 578 }
 579
 580 function parse_headlines(transport, replace, no_effects) {
 581         try {
 582                 var reply = JSON.parse(transport.responseText);
 583                 if (!reply) return;
 584
 585                 var seq = reply['seq'];
 586
 587                 if (seq) {
 588                         if (seq != _update_seq) {
 589                                 console.log("parse_headlines: wrong sequence received.");
 590                                 return;
 591                         }
 592                 } else {
 593                         return;
 594                 }
 595
 596                 var headlines = reply['headlines']['content'];
 597                 var headlines_title = reply['headlines']['title'];
 598
 599                 if (headlines && headlines_title) {
 600
 601                         if (replace) {
 602                                 $('headlines-content').innerHTML = '';
 603                         }
 604
 605                         var pr = $('H-MORE-PROMPT');
 606
 607                         if (pr) pr.parentNode.removeChild(pr);
 608
 609                         var inserted = false;
 610
 611                         for (var i = 0; i < headlines.length; i++) {
 612
 613                                 if (!$('A-' + headlines[i].id)) {
 614                                         add_headline_entry(headlines[i],
 615                                                         find_feed(last_feeds, headlines[i].feed_id), !no_effects);
 616
 617                                 }
 618                         }
 619
 620                         console.log(inserted.id);
 621
 622                         var ids = get_visible_article_ids();
 623
 624                         if (ids.length > 0) {
 625                                 if (pr) {
 626                                         $('headlines-content').appendChild(pr);
 627
 628                                 } else {
 629                                         $('headlines-content').innerHTML += "<li id='H-MORE-PROMPT'>" +
 630                                                 "<div class='body'>" +
 631                                                 "<a href=\"#\" onclick=\"catchup_visible_articles()\">" +
 632                                                 __("Mark as read") + "</a> | " +
 633                                                 "<a href=\"javascript:load_more()\">" +
 634                                                 __("Load more...") + "</a>" +
 635                                                 "<img style=\"display : none\" "+
 636                                                 "id=\"H-LOADING-IMG\" src='images/indicator_tiny.gif'>" +
 637                                                 "</div></li>";
 638                                 }
 639                         } else {
 640                                 // FIXME : display some kind of "nothing to see here" prompt here
 641                         }
 642
 643 //                      if (replace && !no_effects)
 644 //                              new Effect.Appear('headlines-content', {duration : 0.3});
 645
 646                         //new Effect.Appear('headlines-content');
 647                 }
 648
 649         } catch (e) {
 650                 exception_error("parse_headlines", e);
 651         }
 652 }
 653
 654 function init_second_stage() {
 655         try {
 656                 new Ajax.Request("backend.php", {
 657                         parameters: "backend.php?op=digest&method=digestinit&init=1",
 658                         onComplete: function(transport) {
 659                                 parse_feeds(transport);
 660                                 Element.hide("overlay");
 661
 662                                 document.onkeydown = hotkey_handler;
 663
 664                                 window.setTimeout('viewfeed(-4)', 100);
 665                                 _update_timeout = window.setTimeout('update()', 5*1000);
 666                                 } });
 667
 668         } catch (e) {
 669                 exception_error("init_second_stage", e);
 670         }
 671 }
 672
 673 function init() {
 674         try {
 675                 dojo.require("dijit.Dialog");
 676
 677                 new Ajax.Request("backend.php", {
 678                         parameters: {op: "rpc", method: "sanityCheck"},
 679                         onComplete: function(transport) {
 680                                 backend_sanity_check_callback(transport);
 681                         } });
 682
 683         } catch (e) {
 684                 exception_error("digest_init", e);
 685         }
 686 }
 687
 688 function toggle_mark(img, id) {
 689
 690         try {
 691
 692                 var query = "?op=rpc&id=" + id + "&method=mark";
 693
 694                 if (!img) return;
 695
 696                 if (img.src.match("mark_unset")) {
 697                         img.src = img.src.replace("mark_unset", "mark_set");
 698                         img.alt = __("Unstar article");
 699                         query = query + "&mark=1";
 700                 } else {
 701                         img.src = img.src.replace("mark_set", "mark_unset");
 702                         img.alt = __("Star article");
 703                         query = query + "&mark=0";
 704                 }
 705
 706                 new Ajax.Request("backend.php", {
 707                         parameters: query,
 708                         onComplete: function(transport) {
 709                                 update();
 710                         } });
 711
 712         } catch (e) {
 713                 exception_error("toggle_mark", e);
 714         }
 715 }
 716
 717 function toggle_pub(img, id, note) {
 718
 719         try {
 720
 721                 var query = "?op=rpc&id=" + id + "&method=publ";
 722
 723                 if (note != undefined) {
 724                         query = query + "&note=" + param_escape(note);
 725                 } else {
 726                         query = query + "&note=undefined";
 727                 }
 728
 729                 if (!img) return;
 730
 731                 if (img.src.match("pub_unset") || note != undefined) {
 732                         img.src = img.src.replace("pub_unset", "pub_set");
 733                         img.alt = __("Unpublish article");
 734                         query = query + "&pub=1";
 735
 736                 } else {
 737                         img.src = img.src.replace("pub_set", "pub_unset");
 738                         img.alt = __("Publish article");
 739                         query = query + "&pub=0";
 740                 }
 741
 742                 new Ajax.Request("backend.php", {
 743                         parameters: query,
 744                         onComplete: function(transport) {
 745                                 update();
 746                         } });
 747
 748         } catch (e) {
 749                 exception_error("toggle_pub", e);
 750         }
 751 }
 752
 753 function fatal_error(code, msg) {
 754         try {
 755
 756                 if (code == 6) {
 757                         window.location.href = "digest.php";
 758                 } else if (code == 5) {
 759                         window.location.href = "db-updater.php";
 760                 } else {
 761
 762                         if (msg == "") msg = "Unknown error";
 763
 764                         console.error("Fatal error: " + code + "\n" +
 765                                 msg);
 766
 767                 }
 768
 769         } catch (e) {
 770                 exception_error("fatalError", e);
 771         }
 772 }
 773
 774 function fatal_error_check(transport) {
 775         try {
 776                 if (transport.responseXML) {
 777                         var error = transport.responseXML.getElementsByTagName("error")[0];
 778
 779                         if (error) {
 780                                 var code = error.getAttribute("error-code");
 781                                 var msg = error.getAttribute("error-msg");
 782                                 if (code != 0) {
 783                                         fatal_error(code, msg);
 784                                         return false;
 785                                 }
 786                         }
 787                 }
 788         } catch (e) {
 789                 exception_error("fatal_error_check", e);
 790         }
 791         return true;
 792 }
 793
 794 function update_title(unread) {
 795         try {
 796                 document.title = "Tiny Tiny RSS";
 797
 798                 if (unread > 0)
 799                         document.title += " (" + unread + ")";
 800
 801         } catch (e) {
 802                 exception_error("update_title", e);
 803         }
 804 }
 805
 806 function toggle_select_article(elem) {
 807         try {
 808                 var article = elem.parentNode;
 809
 810                 if (article.hasClassName("selected"))
 811                         article.removeClassName("selected");
 812                 else
 813                         article.addClassName("selected");
 814
 815         } catch (e) {
 816                 exception_error("toggle_select_article", e);
 817         }
 818 }
 819
 820 function hotkey_handler(e) {
 821         try {
 822
 823                 if (e.target.nodeName == "INPUT" || e.target.nodeName == "TEXTAREA") return;
 824
 825                 var keycode = false;
 826                 var shift_key = false;
 827
 828                 var cmdline = $('cmdline');
 829
 830                 try {
 831                         shift_key = e.shiftKey;
 832                 } catch (e) {
 833
 834                 }
 835
 836                 if (window.event) {
 837                         keycode = window.event.keyCode;
 838                 } else if (e) {
 839                         keycode = e.which;
 840                 }
 841
 842                 var keychar = String.fromCharCode(keycode);
 843
 844                 if (!shift_key) keychar = keychar.toLowerCase();
 845
 846                 if (keycode == 16) return; // ignore lone shift
 847                 if (keycode == 17) return; // ignore lone ctrl
 848
 849                 var hotkey = keychar.search(/[a-zA-Z0-9]/) != -1 ? keychar : "(" + keycode + ")";
 850                 hotkey = hotkey_prefix ? hotkey_prefix + " " + hotkey : hotkey;
 851                 hotkey_prefix = false;
 852
 853                 var hotkey_action = false;
 854                 var hotkeys = getInitParam("hotkeys");
 855
 856                 for (sequence in hotkeys[1]) {
 857                         if (sequence == hotkey) {
 858                                 hotkey_action = hotkeys[1][sequence];
 859                                 break;
 860                         }
 861                 }
 862
 863                 switch (keycode) {
 864                 case 27: // esc
 865                         close_article();
 866                         return false;
 867                 }
 868
 869                 switch (hotkey_action) {
 870                 case "next_feed":
 871                         var feeds = $$("#feeds li");
 872                         for (var i = 0; i < feeds.length; i++) {
 873                                 var base_id = feeds[i].id.replace("F-", "");
 874
 875                                 if (base_id == _active_feed_id) {
 876                                         if (feeds[i+1]) {
 877                                                 viewfeed(feeds[i+1].id.replace("F-", ""));
 878                                         }
 879                                         break;
 880                                 }
 881                         }
 882                         return false;
 883                 case "prev_feed":
 884                         var feeds = $$("#feeds li");
 885                         for (var i = 0; i < feeds.length; i++) {
 886                                 var base_id = feeds[i].id.replace("F-", "");
 887
 888                                 if (base_id == _active_feed_id) {
 889                                         if (feeds[i-1]) {
 890                                                 viewfeed(feeds[i-1].id.replace("F-", ""));
 891                                         }
 892                                         break;
 893                                 }
 894                         }
 895                         return false;
 896                 case "next_article":
 897                         return false;
 898                 case "prev_article":
 899                         return false;
 900                 default:
 901                         console.log("unhandled action: " + hotkey_action + "; hotkey: " + hotkey);
 902                 }
 903
 904
 905         } catch (e) {
 906                 exception_error("hotkey_handler", e);
 907         }
 908 }