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                 var checkbox_part = "<input type=\"checkbox\" class=\"cb\" onclick=\"toggle_select_article(this)\"/>";
 458
 459                 var date = new Date(article.updated * 1000);
 460
 461                 var date_part = date.toString().substring(0,21);
 462
 463                 var tmp_html = "<li id=\"A-"+article.id+"\" "+style+" class=\""+li_class+"\">" +
 464                         checkbox_part +
 465                         icon_part +
 466                         "<a target=\"_blank\" href=\""+article.link+"\""+
 467                                 "onclick=\"return view("+article.id+")\" class='title'>" +
 468                                 article.title + "</a>" +
 469                         "<div class='body'>" +
 470                         "<div onclick=\"view("+article.id+")\" class='excerpt'>" +
 471                                 article.excerpt + "</div>" +
 472                         "<div onclick=\"view("+article.id+")\" class='info'>";
 473
 474 /*              tmp_html += "<a href=\#\" onclick=\"viewfeed("+feed.id+")\">" +
 475                                         feed.title + "</a> " + " @ "; */
 476
 477                 tmp_html += date_part + "</div>" +
 478                         "</div></li>";
 479
 480                 $("headlines-content").innerHTML += tmp_html;
 481
 482                 if (!no_effects)
 483                         window.setTimeout('article_appear(' + article.id + ')', 100);
 484
 485         } catch (e) {
 486                 exception_error("add_headline_entry", e);
 487         }
 488 }
 489
 490 function expand_feeds() {
 491         try {
 492                 _feedlist_expanded = true;
 493
 494                 redraw_feedlist(last_feeds);
 495
 496         } catch (e) {
 497                 exception_error("expand_feeds", e);
 498         }
 499 }
 500
 501 function redraw_feedlist(feeds) {
 502         try {
 503
 504                 $('feeds-content').innerHTML = "";
 505
 506                 var limit = 10;
 507
 508                 if (_feedlist_expanded) limit = feeds.length;
 509
 510                 for (var i = 0; i < Math.min(limit, feeds.length); i++) {
 511                         add_feed_entry(feeds[i]);
 512                 }
 513
 514                 if (feeds.length > limit) {
 515                         $('feeds-content').innerHTML += "<li id='F-MORE-PROMPT'>" +
 516                                 "<img src='images/blank_icon.gif'>" +
 517                                 "<a href=\"#\" onclick=\"expand_feeds()\">" +
 518                                 __("%d more...").replace("%d", feeds.length-10) +
 519                                 "</a>" + "</li>";
 520                 }
 521
 522                 if (feeds.length == 0) {
 523                         $('feeds-content').innerHTML =
 524                                 "<div class='insensitive' style='text-align : center'>" +
 525                                         __("No unread feeds.") + "</div>";
 526                 }
 527
 528                 if (_active_feed_id)
 529                         set_selected_feed(_active_feed_id);
 530
 531         } catch (e) {
 532                 exception_error("redraw_feedlist", e);
 533         }
 534 }
 535
 536 function parse_feeds(transport) {
 537         try {
 538                 var reply = JSON.parse(transport.responseText);
 539
 540                 if (!reply) return;
 541
 542                 var feeds = reply['feeds'];
 543
 544                 if (feeds) {
 545
 546                         feeds.sort( function (a,b)
 547                                 {
 548                                         if (b.unread != a.unread)
 549                                                 return (b.unread - a.unread);
 550                                         else
 551                                                 if (a.title > b.title)
 552                                                         return 1;
 553                                                 else if (a.title < b.title)
 554                                                         return -1;
 555                                                 else
 556                                                         return 0;
 557                                 });
 558
 559                         var all_articles = find_feed(feeds, -4);
 560
 561                         update_title(all_articles.unread);
 562
 563                         last_feeds = feeds;
 564
 565                         redraw_feedlist(feeds);
 566                 }
 567
 568                 if (reply['hotkeys']) {
 569                         hotkeys_map = reply['hotkeys'];
 570                 }
 571
 572         } catch (e) {
 573                 console.log(e);
 574                 //exception_error("parse_feeds", e);
 575         }
 576 }
 577
 578 function parse_headlines(transport, replace, no_effects) {
 579         try {
 580                 var reply = JSON.parse(transport.responseText);
 581                 if (!reply) return;
 582
 583                 var seq = reply['seq'];
 584
 585                 if (seq) {
 586                         if (seq != _update_seq) {
 587                                 console.log("parse_headlines: wrong sequence received.");
 588                                 return;
 589                         }
 590                 } else {
 591                         return;
 592                 }
 593
 594                 var headlines = reply['headlines']['content'];
 595                 var headlines_title = reply['headlines']['title'];
 596
 597                 if (headlines && headlines_title) {
 598
 599                         if (replace) {
 600                                 $('headlines-content').innerHTML = '';
 601                         }
 602
 603                         var pr = $('H-MORE-PROMPT');
 604
 605                         if (pr) pr.parentNode.removeChild(pr);
 606
 607                         var inserted = false;
 608
 609                         for (var i = 0; i < headlines.length; i++) {
 610
 611                                 if (!$('A-' + headlines[i].id)) {
 612                                         add_headline_entry(headlines[i],
 613                                                         find_feed(last_feeds, headlines[i].feed_id), !no_effects);
 614
 615                                 }
 616                         }
 617
 618                         console.log(inserted.id);
 619
 620                         var ids = get_visible_article_ids();
 621
 622                         if (ids.length > 0) {
 623                                 if (pr) {
 624                                         $('headlines-content').appendChild(pr);
 625
 626                                 } else {
 627                                         $('headlines-content').innerHTML += "<li id='H-MORE-PROMPT'>" +
 628                                                 "<div class='body'>" +
 629                                                 "<a href=\"#\" onclick=\"catchup_visible_articles()\">" +
 630                                                 __("Mark as read") + "</a> | " +
 631                                                 "<a href=\"javascript:load_more()\">" +
 632                                                 __("Load more...") + "</a>" +
 633                                                 "<img style=\"display : none\" "+
 634                                                 "id=\"H-LOADING-IMG\" src='images/indicator_tiny.gif'>" +
 635                                                 "</div></li>";
 636                                 }
 637                         } else {
 638                                 // FIXME : display some kind of "nothing to see here" prompt here
 639                         }
 640
 641 //                      if (replace && !no_effects)
 642 //                              new Effect.Appear('headlines-content', {duration : 0.3});
 643
 644                         //new Effect.Appear('headlines-content');
 645                 }
 646
 647         } catch (e) {
 648                 exception_error("parse_headlines", e);
 649         }
 650 }
 651
 652 function init_second_stage() {
 653         try {
 654                 new Ajax.Request("backend.php", {
 655                         parameters: "backend.php?op=digest&method=digestinit&init=1",
 656                         onComplete: function(transport) {
 657                                 parse_feeds(transport);
 658                                 Element.hide("overlay");
 659
 660                                 document.onkeydown = hotkey_handler;
 661
 662                                 window.setTimeout('viewfeed(-4)', 100);
 663                                 _update_timeout = window.setTimeout('update()', 5*1000);
 664                                 } });
 665
 666         } catch (e) {
 667                 exception_error("init_second_stage", e);
 668         }
 669 }
 670
 671 function init() {
 672         try {
 673                 dojo.require("dijit.Dialog");
 674
 675                 new Ajax.Request("backend.php", {
 676                         parameters: {op: "rpc", method: "sanityCheck"},
 677                         onComplete: function(transport) {
 678                                 backend_sanity_check_callback(transport);
 679                         } });
 680
 681         } catch (e) {
 682                 exception_error("digest_init", e);
 683         }
 684 }
 685
 686 function toggle_mark(img, id) {
 687
 688         try {
 689
 690                 var query = "?op=rpc&id=" + id + "&method=mark";
 691
 692                 if (!img) return;
 693
 694                 if (img.src.match("mark_unset")) {
 695                         img.src = img.src.replace("mark_unset", "mark_set");
 696                         img.alt = __("Unstar article");
 697                         query = query + "&mark=1";
 698                 } else {
 699                         img.src = img.src.replace("mark_set", "mark_unset");
 700                         img.alt = __("Star article");
 701                         query = query + "&mark=0";
 702                 }
 703
 704                 new Ajax.Request("backend.php", {
 705                         parameters: query,
 706                         onComplete: function(transport) {
 707                                 update();
 708                         } });
 709
 710         } catch (e) {
 711                 exception_error("toggle_mark", e);
 712         }
 713 }
 714
 715 function toggle_pub(img, id, note) {
 716
 717         try {
 718
 719                 var query = "?op=rpc&id=" + id + "&method=publ";
 720
 721                 if (note != undefined) {
 722                         query = query + "&note=" + param_escape(note);
 723                 } else {
 724                         query = query + "&note=undefined";
 725                 }
 726
 727                 if (!img) return;
 728
 729                 if (img.src.match("pub_unset") || note != undefined) {
 730                         img.src = img.src.replace("pub_unset", "pub_set");
 731                         img.alt = __("Unpublish article");
 732                         query = query + "&pub=1";
 733
 734                 } else {
 735                         img.src = img.src.replace("pub_set", "pub_unset");
 736                         img.alt = __("Publish article");
 737                         query = query + "&pub=0";
 738                 }
 739
 740                 new Ajax.Request("backend.php", {
 741                         parameters: query,
 742                         onComplete: function(transport) {
 743                                 update();
 744                         } });
 745
 746         } catch (e) {
 747                 exception_error("toggle_pub", e);
 748         }
 749 }
 750
 751 function fatal_error(code, msg) {
 752         try {
 753
 754                 if (code == 6) {
 755                         window.location.href = "digest.php";
 756                 } else if (code == 5) {
 757                         window.location.href = "db-updater.php";
 758                 } else {
 759
 760                         if (msg == "") msg = "Unknown error";
 761
 762                         console.error("Fatal error: " + code + "\n" +
 763                                 msg);
 764
 765                 }
 766
 767         } catch (e) {
 768                 exception_error("fatalError", e);
 769         }
 770 }
 771
 772 function fatal_error_check(transport) {
 773         try {
 774                 if (transport.responseXML) {
 775                         var error = transport.responseXML.getElementsByTagName("error")[0];
 776
 777                         if (error) {
 778                                 var code = error.getAttribute("error-code");
 779                                 var msg = error.getAttribute("error-msg");
 780                                 if (code != 0) {
 781                                         fatal_error(code, msg);
 782                                         return false;
 783                                 }
 784                         }
 785                 }
 786         } catch (e) {
 787                 exception_error("fatal_error_check", e);
 788         }
 789         return true;
 790 }
 791
 792 function update_title(unread) {
 793         try {
 794                 document.title = "Tiny Tiny RSS";
 795
 796                 if (unread > 0)
 797                         document.title += " (" + unread + ")";
 798
 799         } catch (e) {
 800                 exception_error("update_title", e);
 801         }
 802 }
 803
 804 function toggle_select_article(elem) {
 805         try {
 806                 var article = elem.parentNode;
 807
 808                 if (article.hasClassName("selected"))
 809                         article.removeClassName("selected");
 810                 else
 811                         article.addClassName("selected");
 812
 813         } catch (e) {
 814                 exception_error("toggle_select_article", e);
 815         }
 816 }
 817
 818 function hotkey_handler(e) {
 819         try {
 820
 821                 if (e.target.nodeName == "INPUT" || e.target.nodeName == "TEXTAREA") return;
 822
 823                 var keycode = false;
 824                 var shift_key = false;
 825
 826                 var cmdline = $('cmdline');
 827
 828                 try {
 829                         shift_key = e.shiftKey;
 830                 } catch (e) {
 831
 832                 }
 833
 834                 if (window.event) {
 835                         keycode = window.event.keyCode;
 836                 } else if (e) {
 837                         keycode = e.which;
 838                 }
 839
 840                 var keychar = String.fromCharCode(keycode);
 841
 842                 if (!shift_key) keychar = keychar.toLowerCase();
 843
 844                 if (keycode == 16) return; // ignore lone shift
 845                 if (keycode == 17) return; // ignore lone ctrl
 846
 847                 var hotkey = keychar.search(/[a-zA-Z0-9]/) != -1 ? keychar : "(" + keycode + ")";
 848                 hotkey = hotkey_prefix ? hotkey_prefix + " " + hotkey : hotkey;
 849                 hotkey_prefix = false;
 850
 851                 var hotkey_action = false;
 852                 var hotkeys = getInitParam("hotkeys");
 853
 854                 for (sequence in hotkeys[1]) {
 855                         if (sequence == hotkey) {
 856                                 hotkey_action = hotkeys[1][sequence];
 857                                 break;
 858                         }
 859                 }
 860
 861                 switch (keycode) {
 862                 case 27: // esc
 863                         close_article();
 864                         return false;
 865                 }
 866
 867                 switch (hotkey_action) {
 868                 case "next_feed":
 869                         var feeds = $$("#feeds li");
 870                         for (var i = 0; i < feeds.length; i++) {
 871                                 var base_id = feeds[i].id.replace("F-", "");
 872
 873                                 if (base_id == _active_feed_id) {
 874                                         if (feeds[i+1]) {
 875                                                 viewfeed(feeds[i+1].id.replace("F-", ""));
 876                                         }
 877                                         break;
 878                                 }
 879                         }
 880                         return false;
 881                 case "prev_feed":
 882                         var feeds = $$("#feeds li");
 883                         for (var i = 0; i < feeds.length; i++) {
 884                                 var base_id = feeds[i].id.replace("F-", "");
 885
 886                                 if (base_id == _active_feed_id) {
 887                                         if (feeds[i-1]) {
 888                                                 viewfeed(feeds[i-1].id.replace("F-", ""));
 889                                         }
 890                                         break;
 891                                 }
 892                         }
 893                         return false;
 894                 case "next_article":
 895                         return false;
 896                 case "prev_article":
 897                         return false;
 898                 default:
 899                         console.log("unhandled action: " + hotkey_action + "; hotkey: " + hotkey);
 900                 }
 901
 902
 903         } catch (e) {
 904                 exception_error("hotkey_handler", e);
 905         }
 906 }