viewfeed.js

   1 var active_post_id = false;
   2 var last_article_view = false;
   3 var active_real_feed_id = false;
   4
   5 var _tag_active_post_id = false;
   6 var _tag_active_feed_id = false;
   7 var _tag_active_cdm = false;
   8
   9 // FIXME: kludge, to restore scrollTop after tag editor terminates
  10 var _tag_cdm_scroll = false;
  11
  12 // FIXME: kludges, needs proper implementation
  13 var _reload_feedlist_after_view = false;
  14
  15 var _cdm_wd_timeout = false;
  16 var _cdm_wd_vishist = new Array();
  17
  18 var article_cache = new Array();
  19
  20 var vgroup_last_feed = false;
  21 var post_under_pointer = false;
  22
  23 var last_requested_article = false;
  24
  25 function catchup_callback() {
  26         if (xmlhttp_rpc.readyState == 4) {
  27                 try {
  28                         debug("catchup_callback");
  29                         notify("");
  30                         all_counters_callback2(xmlhttp_rpc);
  31                         if (_catchup_callback_func) {
  32                                 setTimeout(_catchup_callback_func, 10);
  33                         }
  34                 } catch (e) {
  35                         exception_error("catchup_callback", e);
  36                 }
  37         }
  38 }
  39
  40 function catchup_callback2(transport, callback) {
  41         try {
  42                 debug("catchup_callback2 " + transport + ", " + callback);
  43                 notify("");
  44                 all_counters_callback2(transport);
  45                 if (callback) {
  46                         setTimeout(callback, 10);
  47                 }
  48         } catch (e) {
  49                 exception_error("catchup_callback2", e);
  50         }
  51 }
  52
  53 function clean_feed_selections() {
  54         try {
  55                 var feeds = document.getElementById("feedList").getElementsByTagName("LI");
  56
  57                 for (var i = 0; i < feeds.length; i++) {
  58                         if (feeds[i].id && feeds[i].id.match("FEEDR-")) {
  59                                 feeds[i].className = feeds[i].className.replace("Selected", "");
  60                         }
  61                         if (feeds[i].id && feeds[i].id.match("FCAT-")) {
  62                                 feeds[i].className = feeds[i].className.replace("Selected", "");
  63                         }
  64                 }
  65         } catch (e) {
  66                 exception_error("clean_feed_selections", e);
  67         }
  68 }
  69
  70 function headlines_callback2(transport, active_feed_id, is_cat, feed_cur_page) {
  71         try {
  72
  73                 loading_set_progress(100);
  74
  75                 debug("headlines_callback2 [page=" + feed_cur_page + "]");
  76
  77                 clean_feed_selections();
  78
  79                 setActiveFeedId(active_feed_id);
  80
  81                 if (is_cat != undefined) {
  82                         active_feed_is_cat = is_cat;
  83                 }
  84
  85                 if (!is_cat) {
  86                         var feedr = document.getElementById("FEEDR-" + active_feed_id);
  87                         if (feedr && !feedr.className.match("Selected")) {
  88                                 feedr.className = feedr.className + "Selected";
  89                         }
  90                 } else {
  91                         var feedr = document.getElementById("FCAT-" + active_feed_id);
  92                         if (feedr && !feedr.className.match("Selected")) {
  93                                 feedr.className = feedr.className + "Selected";
  94                         }
  95                 }
  96
  97                 var f = document.getElementById("headlines-frame");
  98                 try {
  99                         if (feed_cur_page == 0) {
 100                                 debug("resetting headlines scrollTop");
 101                                 f.scrollTop = 0;
 102                         }
 103                 } catch (e) { };
 104
 105                 if (transport.responseXML) {
 106                         var headlines = transport.responseXML.getElementsByTagName("headlines")[0];
 107                         var headlines_count_obj = transport.responseXML.getElementsByTagName("headlines-count")[0];
 108                         var headlines_unread_obj = transport.responseXML.getElementsByTagName("headlines-unread")[0];
 109                         var disable_cache_obj = transport.responseXML.getElementsByTagName("disable-cache")[0];
 110
 111                         var vgroup_last_feed_obj =  transport.responseXML.getElementsByTagName("vgroup-last-feed")[0];
 112
 113                         var headlines_count = headlines_count_obj.getAttribute("value");
 114                         var headlines_unread = headlines_unread_obj.getAttribute("value");
 115                         var disable_cache = disable_cache_obj.getAttribute("value") != "0";
 116
 117                         vgroup_last_feed = vgroup_last_feed_obj.getAttribute("value");
 118
 119                         if (headlines_count == 0) {
 120                                 _infscroll_disable = 1;
 121                         } else {
 122                                 _infscroll_disable = 0;
 123                         }
 124
 125                         var counters = transport.responseXML.getElementsByTagName("counters")[0];
 126                         var articles = transport.responseXML.getElementsByTagName("article");
 127                         var runtime_info = transport.responseXML.getElementsByTagName("runtime-info");
 128
 129                         if (feed_cur_page == 0) {
 130                                 if (headlines) {
 131                                         f.innerHTML = headlines.firstChild.nodeValue;
 132
 133                                         var cache_prefix = "";
 134
 135                                         if (is_cat) {
 136                                                 cache_prefix = "C:";
 137                                         } else {
 138                                                 cache_prefix = "F:";
 139                                         }
 140
 141                                         cache_invalidate(cache_prefix + active_feed_id);
 142
 143                                         if (!disable_cache) {
 144                                                 cache_inject(cache_prefix + active_feed_id,
 145                                                         headlines.firstChild.nodeValue, headlines_unread);
 146                                         }
 147
 148                                 } else {
 149                                         debug("headlines_callback: returned no data");
 150                                 f.innerHTML = "<div class='whiteBox'>" + __('Could not update headlines (missing XML data)') + "</div>";
 151
 152                                 }
 153                         } else {
 154                                 if (headlines) {
 155                                         if (headlines_count > 0) {
 156                                                 debug("adding some more headlines...");
 157
 158                                                 var c = document.getElementById("headlinesList");
 159
 160                                                 if (!c) {
 161                                                         c = document.getElementById("headlinesInnerContainer");
 162                                                 }
 163
 164                                                 var ids = getSelectedArticleIds2();
 165
 166                                                 c.innerHTML = c.innerHTML + headlines.firstChild.nodeValue;
 167
 168                                                 debug("restore selected ids: " + ids);
 169
 170                                                 for (var i = 0; i < ids.length; i++) {
 171                                                         markHeadline(ids[i]);
 172                                                 }
 173
 174                                                 subtoolbarSearch();
 175
 176                                         } else {
 177                                                 debug("no new headlines received");
 178                                         }
 179                                 } else {
 180                                         debug("headlines_callback: returned no data");
 181                                         notify_error("Error while trying to load more headlines");
 182                                 }
 183
 184                         }
 185
 186                         if (articles) {
 187                                 for (var i = 0; i < articles.length; i++) {
 188                                         var a_id = articles[i].getAttribute("id");
 189                                         debug("found id: " + a_id);
 190                                         cache_inject(a_id, articles[i].firstChild.nodeValue);
 191                                 }
 192                         } else {
 193                                 debug("no cached articles received");
 194                         }
 195
 196                         if (counters) {
 197                                 debug("parsing piggybacked counters: " + counters);
 198                                 parse_counters(counters, false);
 199                         } else {
 200                                 debug("counters container not found in reply, requesting...");
 201                                 request_counters();
 202                         }
 203
 204                         if (runtime_info) {
 205                                 debug("parsing runtime info: " + runtime_info[0]);
 206                                 parse_runtime_info(runtime_info[0]);
 207                         } else {
 208                                 debug("counters container not found in reply");
 209                         }
 210
 211                 } else {
 212                         debug("headlines_callback: returned no XML object");
 213                         f.innerHTML = "<div class='whiteBox'>" + __('Could not update headlines (missing XML object)') + "</div>";
 214                 }
 215
 216                 if (typeof correctPNG != 'undefined') {
 217                         correctPNG();
 218                 }
 219
 220                 if (_cdm_wd_timeout) window.clearTimeout(_cdm_wd_timeout);
 221
 222                 if (!document.getElementById("headlinesList") &&
 223                                 getInitParam("cdm_auto_catchup") == 1) {
 224                         debug("starting CDM watchdog");
 225                         _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 5000);
 226                         _cdm_wd_vishist = new Array();
 227                 } else {
 228                         debug("not in CDM mode or watchdog disabled");
 229                 }
 230
 231                 if (_tag_cdm_scroll) {
 232                         try {
 233                                 document.getElementById("headlinesInnerContainer").scrollTop = _tag_cdm_scroll;
 234                                 _tag_cdm_scroll = false;
 235                                 debug("resetting headlinesInner scrollTop");
 236
 237                         } catch (e) { }
 238                 }
 239
 240                 _feed_cur_page = feed_cur_page;
 241                 _infscroll_request_sent = 0;
 242
 243                 notify("");
 244
 245                 remove_splash();
 246
 247         } catch (e) {
 248                 exception_error("headlines_callback2", e);
 249         }
 250 }
 251
 252 function render_article(article) {
 253         try {
 254                 var f = document.getElementById("content-frame");
 255                 try {
 256                         f.scrollTop = 0;
 257                 } catch (e) { };
 258
 259                 var fi = document.getElementById("content-insert");
 260
 261                 fi.innerHTML = article;
 262
 263         } catch (e) {
 264                 exception_error("render_article", e);
 265         }
 266 }
 267
 268 function showArticleInHeadlines(id) {
 269
 270         try {
 271
 272                 cleanSelected("headlinesList");
 273
 274                 var crow = document.getElementById("RROW-" + id);
 275
 276                 if (!crow) return;
 277
 278                 var article_is_unread = crow.className.match("Unread");
 279
 280                 crow.className = crow.className.replace("Unread", "");
 281
 282                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
 283
 284                 var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 285
 286                 var cache_prefix = "";
 287
 288                 if (activeFeedIsCat()) {
 289                         cache_prefix = "C:";
 290                 } else {
 291                         cache_prefix = "F:";
 292                 }
 293
 294                 var view_mode = false;
 295
 296                 try {
 297                         view_mode = document.forms['main_toolbar_form'].view_mode;
 298                         view_mode = view_mode[view_mode.selectedIndex].value;
 299                 } catch (e) {
 300                         exception_error("showArticleInHeadlines/viewmode", e, true);
 301                 }
 302
 303                 if (upd_img_pic && upd_img_pic.src.match("updated.png")) {
 304                         upd_img_pic.src = "images/blank_icon.gif";
 305
 306                         cache_invalidate(cache_prefix + getActiveFeedId());
 307
 308                         cache_inject(cache_prefix + getActiveFeedId(),
 309                                 document.getElementById("headlines-frame").innerHTML,
 310                                 get_feed_unread(getActiveFeedId()));
 311
 312                 } else if (article_is_unread && view_mode == "all_articles") {
 313
 314                         cache_invalidate(cache_prefix + getActiveFeedId());
 315
 316                         cache_inject(cache_prefix + getActiveFeedId(),
 317                                 document.getElementById("headlines-frame").innerHTML,
 318                                 get_feed_unread(getActiveFeedId())-1);
 319
 320                 } else if (article_is_unread) {
 321                         cache_invalidate(cache_prefix + getActiveFeedId());
 322                 }
 323
 324                 markHeadline(id);
 325
 326         } catch (e) {
 327                 exception_error("showArticleInHeadlines", e);
 328         }
 329 }
 330
 331 function article_callback2(transport, id, feed_id) {
 332         try {
 333                 debug("article_callback2 " + id);
 334
 335                 if (transport.responseXML) {
 336
 337                         debug("looking for articles to cache...");
 338
 339                         var articles = transport.responseXML.getElementsByTagName("article");
 340
 341                         for (var i = 0; i < articles.length; i++) {
 342                                 var a_id = articles[i].getAttribute("id");
 343
 344                                 debug("found id: " + a_id);
 345
 346                                 if (a_id == active_post_id) {
 347                                         debug("active article, rendering...");
 348                                         render_article(articles[i].firstChild.nodeValue);
 349                                 }
 350
 351                                 cache_inject(a_id, articles[i].firstChild.nodeValue);
 352                         }
 353
 354                         if (id != last_requested_article) {
 355                                 debug("requested article id is out of sequence, aborting");
 356                                 return;
 357                         }
 358
 359                         active_real_feed_id = feed_id;
 360                         active_post_id = id;
 361
 362                         showArticleInHeadlines(id);
 363
 364                         var reply = transport.responseXML.firstChild.firstChild;
 365
 366                 } else {
 367                         debug("article_callback: returned no XML object");
 368                         //var f = document.getElementById("content-frame");
 369                         //f.innerHTML = "<div class='whiteBox'>" + __('Could not display article (missing XML object)') + "</div>";
 370                 }
 371
 372                 var date = new Date();
 373                 last_article_view = date.getTime() / 1000;
 374
 375                 if (typeof correctPNG != 'undefined') {
 376                         correctPNG();
 377                 }
 378
 379                 if (_reload_feedlist_after_view) {
 380                         setTimeout('updateFeedList(false, false)', 50);
 381                         _reload_feedlist_after_view = false;
 382                 } else {
 383                         var counters = transport.responseXML.getElementsByTagName("counters")[0];
 384
 385                         if (counters) {
 386                                 debug("parsing piggybacked counters: " + counters);
 387                                 parse_counters(counters, false);
 388                         } else {
 389                                 debug("counters container not found in reply, requesting...");
 390                                 request_counters();
 391                         }
 392                 }
 393
 394                 notify("");
 395         } catch (e) {
 396                 exception_error("article_callback2", e);
 397         }
 398 }
 399
 400 function view(id, feed_id, skip_history) {
 401
 402         try {
 403                 debug("loading article: " + id + "/" + feed_id);
 404
 405                 var cached_article = cache_find(id);
 406
 407                 debug("cache check result: " + (cached_article != false));
 408
 409                 enableHotkeys();
 410
 411                 //setActiveFeedId(feed_id);
 412
 413                 var query = "backend.php?op=view&id=" + param_escape(id) +
 414                         "&feed=" + param_escape(feed_id);
 415
 416                 var date = new Date();
 417
 418                 var neighbor_ids = getRelativePostIds(active_post_id);
 419
 420                 /* only request uncached articles */
 421
 422                 var cids_to_request = Array();
 423
 424                 for (var i = 0; i < neighbor_ids.length; i++) {
 425                         if (!cache_check(neighbor_ids[i])) {
 426                                 cids_to_request.push(neighbor_ids[i]);
 427                         }
 428                 }
 429
 430                 debug("additional ids: " + cids_to_request.toString());
 431
 432                 /* additional info for piggyback counters */
 433
 434                 if (tagsAreDisplayed()) {
 435                         query = query + "&omode=lt";
 436                 } else {
 437                         query = query + "&omode=flc";
 438                 }
 439
 440                 var date = new Date();
 441                 var timestamp = Math.round(date.getTime() / 1000);
 442                 query = query + "&ts=" + timestamp;
 443
 444                 query = query + "&cids=" + cids_to_request.toString();
 445
 446                 var crow = document.getElementById("RROW-" + id);
 447                 var article_is_unread = crow.className.match("Unread");
 448
 449                 if (!async_counters_work) {
 450                         query = query + "&csync=true";
 451                 }
 452
 453                 showArticleInHeadlines(id);
 454
 455                 if (!cached_article) {
 456
 457                         notify_progress("Loading, please wait...", true);
 458
 459                 } else if (cached_article && article_is_unread) {
 460
 461                         query = query + "&mode=prefetch";
 462
 463                         render_article(cached_article);
 464
 465                 } else if (cached_article) {
 466
 467                         query = query + "&mode=prefetch_old";
 468                         render_article(cached_article);
 469
 470                 }
 471
 472                 cache_expire();
 473
 474                 last_requested_article = id;
 475
 476                 new Ajax.Request(query, {
 477                         onComplete: function(transport) {
 478                                 article_callback2(transport, id, feed_id);
 479                         } });
 480
 481                 return false;
 482
 483         } catch (e) {
 484                 exception_error("view", e);
 485         }
 486 }
 487
 488 function tMark(id) {
 489         return toggleMark(id);
 490 }
 491
 492 function tPub(id) {
 493         return togglePub(id);
 494 }
 495
 496 function tMark_afh_off(effect) {
 497         try {
 498                 var elem = effect.effects[0].element;
 499
 500                 debug("tMark_afh_off : " + elem.id);
 501
 502                 if (elem) {
 503                         elem.src = elem.src.replace("mark_set", "mark_unset");
 504                         elem.alt = __("Star article");
 505                         Element.show(elem);
 506                 }
 507
 508         } catch (e) {
 509                 exception_error("tMark_afh_off", e);
 510         }
 511 }
 512
 513 function tPub_afh_off(effect) {
 514         try {
 515                 var elem = effect.effects[0].element;
 516
 517                 debug("tPub_afh_off : " + elem.id);
 518
 519                 if (elem) {
 520                         elem.src = elem.src.replace("pub_set", "pub_unset");
 521                         elem.alt = __("Publish article");
 522                         Element.show(elem);
 523                 }
 524
 525         } catch (e) {
 526                 exception_error("tPub_afh_off", e);
 527         }
 528 }
 529
 530 function toggleMark(id, client_only, no_effects) {
 531
 532         try {
 533
 534                 var query = "backend.php?op=rpc&id=" + id + "&subop=mark";
 535
 536                 query = query + "&afid=" + getActiveFeedId();
 537
 538                 if (tagsAreDisplayed()) {
 539                         query = query + "&omode=tl";
 540                 } else {
 541                         query = query + "&omode=flc";
 542                 }
 543
 544                 var mark_img = document.getElementById("FMPIC-" + id);
 545                 var vfeedu = document.getElementById("FEEDU--1");
 546                 var crow = document.getElementById("RROW-" + id);
 547
 548                 if (mark_img.src.match("mark_unset")) {
 549                         mark_img.src = mark_img.src.replace("mark_unset", "mark_set");
 550                         mark_img.alt = __("Unstar article");
 551                         query = query + "&mark=1";
 552
 553                 } else {
 554                         //mark_img.src = "images/mark_unset.png";
 555                         mark_img.alt = __("Please wait...");
 556                         query = query + "&mark=0";
 557
 558                         if (document.getElementById("headlinesList") && !no_effects) {
 559                                 Effect.Puff(mark_img, {duration : 0.25, afterFinish: tMark_afh_off});
 560                         } else {
 561                                 mark_img.src = mark_img.src.replace("mark_set", "mark_unset");
 562                                 mark_img.alt = __("Star article");
 563                         }
 564                 }
 565
 566                 if (!client_only) {
 567                         debug(query);
 568
 569                         new Ajax.Request(query, {
 570                                 onComplete: function(transport) {
 571                                         all_counters_callback2(transport);
 572                                 } });
 573
 574                 }
 575
 576         } catch (e) {
 577                 exception_error("toggleMark", e);
 578         }
 579 }
 580
 581 function togglePub(id, client_only, no_effects) {
 582
 583         try {
 584
 585                 var query = "backend.php?op=rpc&id=" + id + "&subop=publ";
 586
 587                 query = query + "&afid=" + getActiveFeedId();
 588
 589                 if (tagsAreDisplayed()) {
 590                         query = query + "&omode=tl";
 591                 } else {
 592                         query = query + "&omode=flc";
 593                 }
 594
 595                 var mark_img = document.getElementById("FPPIC-" + id);
 596                 var vfeedu = document.getElementById("FEEDU--2");
 597                 var crow = document.getElementById("RROW-" + id);
 598
 599                 if (mark_img.src.match("pub_unset")) {
 600                         mark_img.src = mark_img.src.replace("pub_unset", "pub_set");
 601                         mark_img.alt = __("Unpublish article");
 602                         query = query + "&pub=1";
 603
 604
 605                 } else {
 606                         //mark_img.src = "images/pub_unset.png";
 607                         mark_img.alt = __("Please wait...");
 608                         query = query + "&pub=0";
 609
 610                         if (document.getElementById("headlinesList") && !no_effects) {
 611                                 Effect.Puff(mark_img, {duration : 0.25, afterFinish: tPub_afh_off});
 612                         } else {
 613                                 mark_img.src = mark_img.src.replace("pub_set", "pub_unset");
 614                                 mark_img.alt = __("Publish article");
 615                         }
 616                 }
 617
 618                 if (!client_only) {
 619                         new Ajax.Request(query, {
 620                                 onComplete: function(transport) {
 621                                         all_counters_callback2(transport);
 622                                 } });
 623                 }
 624
 625         } catch (e) {
 626
 627                 exception_error("togglePub", e);
 628         }
 629 }
 630
 631 function correctHeadlinesOffset(id) {
 632
 633         try {
 634
 635                 var hlist = document.getElementById("headlinesList");
 636                 var container = document.getElementById("headlinesInnerContainer");
 637                 var row = document.getElementById("RROW-" + id);
 638
 639                 var viewport = container.offsetHeight;
 640
 641                 var rel_offset_top = row.offsetTop - container.scrollTop;
 642                 var rel_offset_bottom = row.offsetTop + row.offsetHeight - container.scrollTop;
 643
 644                 debug("Rtop: " + rel_offset_top + " Rbtm: " + rel_offset_bottom);
 645                 debug("Vport: " + viewport);
 646
 647                 if (rel_offset_top <= 0 || rel_offset_top > viewport) {
 648                         container.scrollTop = row.offsetTop;
 649                 } else if (rel_offset_bottom > viewport) {
 650
 651                         /* doesn't properly work with Opera in some cases because
 652                                 Opera fucks up element scrolling */
 653
 654                         container.scrollTop = row.offsetTop + row.offsetHeight - viewport;
 655                 }
 656
 657         } catch (e) {
 658                 exception_error("correctHeadlinesOffset", e);
 659         }
 660
 661 }
 662
 663 function moveToPost(mode) {
 664
 665         try {
 666
 667                 var rows;
 668
 669                 if (isCdmMode()) {
 670                         rows = cdmGetVisibleArticles();
 671                 } else {
 672                         rows = getVisibleHeadlineIds();
 673                 }
 674
 675                 var prev_id = false;
 676                 var next_id = false;
 677
 678                 if (!document.getElementById('RROW-' + active_post_id)) {
 679                         active_post_id = false;
 680                 }
 681
 682                 if (active_post_id == false) {
 683                         next_id = getFirstVisibleHeadlineId();
 684                         prev_id = getLastVisibleHeadlineId();
 685                 } else {
 686                         for (var i = 0; i < rows.length; i++) {
 687                                 if (rows[i] == active_post_id) {
 688                                         prev_id = rows[i-1];
 689                                         next_id = rows[i+1];
 690                                 }
 691                         }
 692                 }
 693
 694                 if (mode == "next") {
 695                         if (next_id) {
 696                                 if (isCdmMode()) {
 697
 698                                         if (!cdmArticleIsActuallyVisible(next_id)) {
 699                                                 cdmScrollToArticleId(next_id);
 700                                         }
 701                                         cdmSelectArticles("none");
 702                                         toggleUnread(next_id, 0, true);
 703                                         toggleSelected(next_id);
 704
 705                                 } else {
 706                                         correctHeadlinesOffset(next_id);
 707                                         view(next_id, getActiveFeedId());
 708                                 }
 709                         }
 710                 }
 711
 712                 if (mode == "prev") {
 713                         if (prev_id) {
 714                                 if (isCdmMode()) {
 715                                         cdmScrollToArticleId(prev_id);
 716                                         cdmSelectArticles("none");
 717                                         toggleUnread(prev_id, 0, true);
 718                                         toggleSelected(prev_id);
 719                                 } else {
 720                                         correctHeadlinesOffset(prev_id);
 721                                         view(prev_id, getActiveFeedId());
 722                                 }
 723                         }
 724                 }
 725
 726         } catch (e) {
 727                 exception_error("moveToPost", e);
 728         }
 729 }
 730
 731 function toggleSelected(id) {
 732         try {
 733
 734                 var cb = document.getElementById("RCHK-" + id);
 735
 736                 var row = document.getElementById("RROW-" + id);
 737                 if (row) {
 738                         var nc = row.className;
 739
 740                         if (!nc.match("Selected")) {
 741                                 nc = nc + "Selected";
 742                                 if (cb) {
 743                                         cb.checked = true;
 744                                 }
 745
 746                                 // In CDM basically last selected article == active article
 747                                 if (isCdmMode()) active_post_id = id;
 748                         } else {
 749                                 nc = nc.replace("Selected", "");
 750                                 if (cb) {
 751                                         cb.checked = false;
 752                                 }
 753
 754                         }
 755
 756                         row.className = nc;
 757                 }
 758         } catch (e) {
 759                 exception_error("toggleSelected", e);
 760         }
 761 }
 762
 763 function toggleUnread_afh(effect) {
 764         try {
 765
 766                 var elem = effect.element;
 767                 elem.style.backgroundColor = "";
 768
 769         } catch (e) {
 770                 exception_error("toggleUnread_afh", e);
 771         }
 772 }
 773
 774 function toggleUnread(id, cmode, effect) {
 775         try {
 776
 777                 var row = document.getElementById("RROW-" + id);
 778                 if (row) {
 779                         var nc = row.className;
 780                         var is_selected = row.className.match("Selected");
 781                         nc = nc.replace("Unread", "");
 782                         nc = nc.replace("Selected", "");
 783
 784                         // since we are removing selection from the object, uncheck
 785                         // corresponding checkbox
 786
 787                         var cb = document.getElementById("RCHK-" + id);
 788                         if (cb) {
 789                                 cb.checked = false;
 790                         }
 791
 792                         // NOTE: I'm not sure that resetting selection here is a feature -fox
 793
 794                         if (cmode == undefined || cmode == 2) {
 795                                 if (row.className.match("Unread")) {
 796                                         row.className = nc;
 797
 798                                         if (effect) {
 799                                                 new Effect.Highlight(row, {duration: 1, startcolor: "#fff7d5",
 800                                                         afterFinish: toggleUnread_afh,
 801                                                         queue: { position:'end', scope: 'TMRQ-' + id, limit: 1 } } );
 802                                         }
 803
 804                                 } else {
 805                                         row.className = nc + "Unread";
 806                                 }
 807                         } else if (cmode == 0) {
 808                                 row.className = nc;
 809
 810                                 if (effect) {
 811                                         new Effect.Highlight(row, {duration: 1, startcolor: "#fff7d5",
 812                                                 afterFinish: toggleUnread_afh,
 813                                                 queue: { position:'end', scope: 'TMRQ-' + id, limit: 1 } } );
 814                                 }
 815                         } else if (cmode == 1) {
 816                                 row.className = nc + "Unread";
 817                         }
 818
 819                         // Disable unmarking as selected for the time being (16.05.08) -fox
 820                         if (is_selected) row.className = row.className + "Selected";
 821
 822                         if (cmode == undefined) cmode = 2;
 823
 824                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 825                                 param_escape(id) + "&cmode=" + param_escape(cmode);
 826
 827 //                      notify_progress("Loading, please wait...");
 828
 829                         new Ajax.Request(query, {
 830                                 onComplete: function(transport) {
 831                                         all_counters_callback2(transport);
 832                                 } });
 833
 834                 }
 835
 836
 837         } catch (e) {
 838                 exception_error("toggleUnread", e);
 839         }
 840 }
 841
 842 function selectionToggleUnread(cdm_mode, set_state, callback_func, no_error) {
 843         try {
 844                 var rows;
 845
 846                 if (cdm_mode) {
 847                         rows = cdmGetSelectedArticles();
 848                 } else {
 849                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 850                 }
 851
 852                 if (rows.length == 0 && !no_error) {
 853                         alert(__("No articles are selected."));
 854                         return;
 855                 }
 856
 857                 for (i = 0; i < rows.length; i++) {
 858                         var row = document.getElementById("RROW-" + rows[i]);
 859                         if (row) {
 860                                 var nc = row.className;
 861                                 nc = nc.replace("Unread", "");
 862                                 nc = nc.replace("Selected", "");
 863
 864                                 if (set_state == undefined) {
 865                                         if (row.className.match("Unread")) {
 866                                                 row.className = nc + "Selected";
 867                                         } else {
 868                                                 row.className = nc + "UnreadSelected";
 869                                         }
 870                                 }
 871
 872                                 if (set_state == false) {
 873                                         row.className = nc + "Selected";
 874                                 }
 875
 876                                 if (set_state == true) {
 877                                         row.className = nc + "UnreadSelected";
 878                                 }
 879                         }
 880                 }
 881
 882                 if (rows.length > 0) {
 883
 884                         var cmode = "";
 885
 886                         if (set_state == undefined) {
 887                                 cmode = "2";
 888                         } else if (set_state == true) {
 889                                 cmode = "1";
 890                         } else if (set_state == false) {
 891                                 cmode = "0";
 892                         }
 893
 894                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 895                                 param_escape(rows.toString()) + "&cmode=" + cmode;
 896
 897                         notify_progress("Loading, please wait...");
 898
 899                         new Ajax.Request(query, {
 900                                 onComplete: function(transport) {
 901                                         catchup_callback2(transport, callback_func);
 902                                 } });
 903
 904                 }
 905
 906         } catch (e) {
 907                 exception_error("selectionToggleUnread", e);
 908         }
 909 }
 910
 911 function selectionToggleMarked(cdm_mode) {
 912         try {
 913
 914                 var rows;
 915
 916                 if (cdm_mode) {
 917                         rows = cdmGetSelectedArticles();
 918                 } else {
 919                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 920                 }
 921
 922                 if (rows.length == 0) {
 923                         alert(__("No articles are selected."));
 924                         return;
 925                 }
 926
 927                 for (i = 0; i < rows.length; i++) {
 928                         toggleMark(rows[i], true, true);
 929                 }
 930
 931                 if (rows.length > 0) {
 932
 933                         var query = "backend.php?op=rpc&subop=markSelected&ids=" +
 934                                 param_escape(rows.toString()) + "&cmode=2";
 935
 936                         query = query + "&afid=" + getActiveFeedId();
 937
 938 /*                      if (tagsAreDisplayed()) {
 939                                 query = query + "&omode=tl";
 940                         } else {
 941                                 query = query + "&omode=flc";
 942                         } */
 943
 944                         query = query + "&omode=lc";
 945
 946                         new Ajax.Request(query, {
 947                                 onComplete: function(transport) {
 948                                         all_counters_callback2(transport);
 949                                 } });
 950
 951                 }
 952
 953         } catch (e) {
 954                 exception_error("selectionToggleMarked", e);
 955         }
 956 }
 957
 958 function selectionTogglePublished(cdm_mode) {
 959         try {
 960
 961                 var rows;
 962
 963                 if (cdm_mode) {
 964                         rows = cdmGetSelectedArticles();
 965                 } else {
 966                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 967                 }
 968
 969                 if (rows.length == 0) {
 970                         alert(__("No articles are selected."));
 971                         return;
 972                 }
 973
 974                 for (i = 0; i < rows.length; i++) {
 975                         togglePub(rows[i], true, true);
 976                 }
 977
 978                 if (rows.length > 0) {
 979
 980                         var query = "backend.php?op=rpc&subop=publishSelected&ids=" +
 981                                 param_escape(rows.toString()) + "&cmode=2";
 982
 983                         query = query + "&afid=" + getActiveFeedId();
 984
 985 /*                      if (tagsAreDisplayed()) {
 986                                 query = query + "&omode=tl";
 987                         } else {
 988                                 query = query + "&omode=flc";
 989                         } */
 990
 991                         query = query + "&omode=lc";
 992
 993                         new Ajax.Request(query, {
 994                                 onComplete: function(transport) {
 995                                         all_counters_callback2(transport);
 996                                 } });
 997
 998                 }
 999
1000         } catch (e) {
1001                 exception_error("selectionToggleMarked", e);
1002         }
1003 }
1004
1005 function cdmGetSelectedArticles() {
1006         var sel_articles = new Array();
1007         var container = document.getElementById("headlinesInnerContainer");
1008
1009         for (i = 0; i < container.childNodes.length; i++) {
1010                 var child = container.childNodes[i];
1011
1012                 if (child.id && child.id.match("RROW-") && child.className.match("Selected")) {
1013                         var c_id = child.id.replace("RROW-", "");
1014                         sel_articles.push(c_id);
1015                 }
1016         }
1017
1018         return sel_articles;
1019 }
1020
1021 function cdmGetVisibleArticles() {
1022         var sel_articles = new Array();
1023         var container = document.getElementById("headlinesInnerContainer");
1024
1025         if (!container) return sel_articles;
1026
1027         for (i = 0; i < container.childNodes.length; i++) {
1028                 var child = container.childNodes[i];
1029
1030                 if (child.id && child.id.match("RROW-")) {
1031                         var c_id = child.id.replace("RROW-", "");
1032                         sel_articles.push(c_id);
1033                 }
1034         }
1035
1036         return sel_articles;
1037 }
1038
1039 function cdmGetUnreadArticles() {
1040         var sel_articles = new Array();
1041         var container = document.getElementById("headlinesInnerContainer");
1042
1043         for (i = 0; i < container.childNodes.length; i++) {
1044                 var child = container.childNodes[i];
1045
1046                 if (child.id && child.id.match("RROW-") && child.className.match("Unread")) {
1047                         var c_id = child.id.replace("RROW-", "");
1048                         sel_articles.push(c_id);
1049                 }
1050         }
1051
1052         return sel_articles;
1053 }
1054
1055
1056 // mode = all,none,unread
1057 function cdmSelectArticles(mode) {
1058         var container = document.getElementById("headlinesInnerContainer");
1059
1060         for (i = 0; i < container.childNodes.length; i++) {
1061                 var child = container.childNodes[i];
1062
1063                 if (child.id && child.id.match("RROW-")) {
1064                         var aid = child.id.replace("RROW-", "");
1065
1066                         var cb = document.getElementById("RCHK-" + aid);
1067
1068                         if (mode == "all") {
1069                                 if (!child.className.match("Selected")) {
1070                                         child.className = child.className + "Selected";
1071                                         cb.checked = true;
1072                                 }
1073                         } else if (mode == "unread") {
1074                                 if (child.className.match("Unread") && !child.className.match("Selected")) {
1075                                         child.className = child.className + "Selected";
1076                                         cb.checked = true;
1077                                 }
1078                         } else {
1079                                 child.className = child.className.replace("Selected", "");
1080                                 cb.checked = false;
1081                         }
1082                 }
1083         }
1084 }
1085
1086 function catchupPage() {
1087
1088         var fn = getFeedName(getActiveFeedId(), active_feed_is_cat);
1089
1090         var str = __("Mark all visible articles in %s as read?");
1091
1092         str = str.replace("%s", fn);
1093
1094         if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
1095                 return;
1096         }
1097
1098         if (document.getElementById("headlinesList")) {
1099                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true);
1100                 selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
1101                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
1102         } else {
1103                 cdmSelectArticles('all');
1104                 selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
1105                 cdmSelectArticles('none');
1106         }
1107 }
1108
1109 function catchupSelection() {
1110
1111         try {
1112
1113                 var rows;
1114
1115                 if (document.getElementById("headlinesList")) {
1116                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1117                 } else {
1118                         rows = cdmGetSelectedArticles();
1119                 }
1120
1121                 if (rows.length == 0) {
1122                         alert(__("No articles are selected."));
1123                         return;
1124                 }
1125
1126
1127                 var fn = getFeedName(getActiveFeedId(), active_feed_is_cat);
1128
1129                 var str = __("Mark %d selected articles in %s as read?");
1130
1131                 str = str.replace("%d", rows.length);
1132                 str = str.replace("%s", fn);
1133
1134                 if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
1135                         return;
1136                 }
1137
1138                 if (document.getElementById("headlinesList")) {
1139                         selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
1140         //              selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
1141                 } else {
1142                         selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
1143         //              cdmSelectArticles('none');
1144                 }
1145
1146         } catch (e) {
1147                 exception_error("catchupSelection", e);
1148         }
1149 }
1150
1151
1152 function labelFromSearch(search, search_mode, match_on, feed_id, is_cat) {
1153
1154         if (!xmlhttp_ready(xmlhttp_rpc)) {
1155                 printLockingError();
1156         }
1157
1158         var title = prompt(__("Please enter label title:"), "");
1159
1160         if (title) {
1161
1162                 var query = "backend.php?op=labelFromSearch&search=" + param_escape(search) +
1163                         "&smode=" + param_escape(search_mode) + "&match=" + param_escape(match_on) +
1164                         "&feed=" + param_escape(feed_id) + "&is_cat=" + param_escape(is_cat) +
1165                         "&title=" + param_escape(title);
1166
1167                 debug("LFS: " + query);
1168
1169                 new Ajax.Request(query, {
1170                         onComplete: function(transport) {
1171                                         dlg_frefresh_callback(transport);
1172                                 } });
1173         }
1174 }
1175
1176 function editArticleTags(id, feed_id, cdm_enabled) {
1177         _tag_active_post_id = id;
1178         _tag_active_feed_id = feed_id;
1179         _tag_active_cdm = cdm_enabled;
1180
1181         cache_invalidate(id);
1182
1183         try {
1184                 _tag_cdm_scroll = document.getElementById("headlinesInnerContainer").scrollTop;
1185         } catch (e) { }
1186         displayDlg('editArticleTags', id);
1187 }
1188
1189
1190 function tag_saved_callback(transport) {
1191         try {
1192                 debug("in tag_saved_callback");
1193
1194                 closeInfoBox();
1195                 notify("");
1196
1197                 if (tagsAreDisplayed()) {
1198                         _reload_feedlist_after_view = true;
1199                 }
1200
1201                 if (!_tag_active_cdm) {
1202                         if (active_post_id == _tag_active_post_id) {
1203                                 debug("reloading current article");
1204                                 view(_tag_active_post_id, _tag_active_feed_id);
1205                         }
1206                 } else {
1207                         debug("reloading current feed");
1208                         viewCurrentFeed();
1209                 }
1210
1211         } catch (e) {
1212                 exception_error("catchup_callback", e);
1213         }
1214 }
1215
1216 function editTagsSave() {
1217
1218         notify_progress("Saving article tags...");
1219
1220         var form = document.forms["tag_edit_form"];
1221
1222         var query = Form.serialize("tag_edit_form");
1223
1224         query = "backend.php?op=rpc&subop=setArticleTags&" + query;
1225
1226         debug(query);
1227
1228         new Ajax.Request(query, {
1229                 onComplete: function(transport) {
1230                                 tag_saved_callback(transport);
1231                         } });
1232
1233 }
1234
1235 function editTagsInsert() {
1236         try {
1237
1238                 var form = document.forms["tag_edit_form"];
1239
1240                 var found_tags = form.found_tags;
1241                 var tags_str = form.tags_str;
1242
1243                 var tag = found_tags[found_tags.selectedIndex].value;
1244
1245                 if (tags_str.value.length > 0 &&
1246                                 tags_str.value.lastIndexOf(", ") != tags_str.value.length - 2) {
1247
1248                         tags_str.value = tags_str.value + ", ";
1249                 }
1250
1251                 tags_str.value = tags_str.value + tag + ", ";
1252
1253                 found_tags.selectedIndex = 0;
1254
1255         } catch (e) {
1256                 exception_error("editTagsInsert", e);
1257         }
1258 }
1259
1260 function cdmScrollViewport(where) {
1261         debug("cdmScrollViewport: " + where);
1262
1263         var ctr = document.getElementById("headlinesInnerContainer");
1264
1265         if (!ctr) return;
1266
1267         if (where == "bottom") {
1268                 ctr.scrollTop = ctr.scrollHeight;
1269         } else {
1270                 ctr.scrollTop = where;
1271         }
1272 }
1273
1274 function cdmArticleIsBelowViewport(id) {
1275         try {
1276                 var ctr = document.getElementById("headlinesInnerContainer");
1277                 var e = document.getElementById("RROW-" + id);
1278
1279                 if (!e || !ctr) return;
1280
1281                 // article starts below viewport
1282
1283                 if (ctr.scrollTop < e.offsetTop) {
1284                         return true;
1285                 } else {
1286                         return false;
1287                 }
1288
1289         } catch (e) {
1290                 exception_error("cdmArticleIsVisible", e);
1291         }
1292 }
1293
1294 function cdmArticleIsAboveViewport(id) {
1295         try {
1296                 var ctr = document.getElementById("headlinesInnerContainer");
1297                 var e = document.getElementById("RROW-" + id);
1298
1299                 if (!e || !ctr) return;
1300
1301                 // article starts above viewport
1302
1303                 if (ctr.scrollTop > e.offsetTop + e.offsetHeight) {
1304                         return true;
1305                 } else {
1306                         return false;
1307                 }
1308
1309         } catch (e) {
1310                 exception_error("cdmArticleIsVisible", e);
1311         }
1312 }
1313
1314 function cdmScrollToArticleId(id) {
1315         try {
1316                 var ctr = document.getElementById("headlinesInnerContainer");
1317                 var e = document.getElementById("RROW-" + id);
1318
1319                 if (!e || !ctr) return;
1320
1321                 ctr.scrollTop = e.offsetTop;
1322
1323         } catch (e) {
1324                 exception_error("cdmScrollToArticleId", e);
1325         }
1326 }
1327
1328 function cdmArticleIsActuallyVisible(id) {
1329         try {
1330                 var ctr = document.getElementById("headlinesInnerContainer");
1331                 var e = document.getElementById("RROW-" + id);
1332
1333                 if (!e || !ctr) return;
1334
1335                 // article fits in viewport OR article is longer than viewport and
1336                 // its bottom is visible
1337
1338                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
1339                                 ctr.scrollTop + ctr.offsetHeight) {
1340
1341                         return true;
1342
1343                 } else if (e.offsetHeight > ctr.offsetHeight &&
1344                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1345                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
1346
1347                         return true;
1348
1349                 }
1350
1351                 return false;
1352
1353         } catch (e) {
1354                 exception_error("cdmArticleIsVisible", e);
1355         }
1356 }
1357
1358 function cdmWatchdog() {
1359
1360         try {
1361
1362                 var ctr = document.getElementById("headlinesInnerContainer");
1363
1364                 if (!ctr) return;
1365
1366                 var ids = new Array();
1367
1368                 var e = ctr.firstChild;
1369
1370                 while (e) {
1371                         if (e.className && e.className == "cdmArticleUnread" && e.id &&
1372                                         e.id.match("RROW-")) {
1373
1374                                 // article fits in viewport OR article is longer than viewport and
1375                                 // its bottom is visible
1376
1377                                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
1378                                                 ctr.scrollTop + ctr.offsetHeight) {
1379
1380 //                                      debug(e.id + " is visible " + e.offsetTop + "." +
1381 //                                              (e.offsetTop + e.offsetHeight) + " vs " + ctr.scrollTop + "." +
1382 //                                              (ctr.scrollTop + ctr.offsetHeight));
1383
1384                                         ids.push(e.id.replace("RROW-", ""));
1385
1386                                 } else if (e.offsetHeight > ctr.offsetHeight &&
1387                                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1388                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
1389
1390                                         ids.push(e.id.replace("RROW-", ""));
1391
1392                                 }
1393
1394                                 // method 2: article bottom is visible and is in upper 1/2 of the viewport
1395
1396 /*                              if (e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1397                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight/2) {
1398
1399                                         ids.push(e.id.replace("RROW-", ""));
1400
1401                                 } */
1402
1403                         }
1404
1405                         e = e.nextSibling;
1406                 }
1407
1408                 debug("cdmWatchdog, ids= " + ids.toString());
1409
1410                 if (ids.length > 0) {
1411
1412                         for (var i = 0; i < ids.length; i++) {
1413                                 var e = document.getElementById("RROW-" + ids[i]);
1414                                 if (e) {
1415                                         e.className = e.className.replace("Unread", "");
1416                                 }
1417                         }
1418
1419                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
1420                                 param_escape(ids.toString()) + "&cmode=0";
1421
1422                         new Ajax.Request(query, {
1423                                 onComplete: function(transport) {
1424                                         all_counters_callback2(transport);
1425                                 } });
1426
1427                 }
1428
1429                 _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 4000);
1430
1431         } catch (e) {
1432                 exception_error("cdmWatchdog", e);
1433         }
1434
1435 }
1436
1437
1438 function cache_inject(id, article, param) {
1439         if (!cache_check_param(id, param)) {
1440                 debug("cache_article: miss: " + id + " [p=" + param + "]");
1441
1442                 var cache_obj = new Array();
1443
1444                 cache_obj["id"] = id;
1445                 cache_obj["data"] = article;
1446                 cache_obj["param"] = param;
1447
1448                 article_cache.push(cache_obj);
1449
1450         } else {
1451                 debug("cache_article: hit: " + id + " [p=" + param + "]");
1452         }
1453 }
1454
1455 function cache_find(id) {
1456         for (var i = 0; i < article_cache.length; i++) {
1457                 if (article_cache[i]["id"] == id) {
1458                         return article_cache[i]["data"];
1459                 }
1460         }
1461         return false;
1462 }
1463
1464 function cache_find_param(id, param) {
1465         for (var i = 0; i < article_cache.length; i++) {
1466                 if (article_cache[i]["id"] == id && article_cache[i]["param"] == param) {
1467                         return article_cache[i]["data"];
1468                 }
1469         }
1470         return false;
1471 }
1472
1473 function cache_check(id) {
1474         for (var i = 0; i < article_cache.length; i++) {
1475                 if (article_cache[i]["id"] == id) {
1476                         return true;
1477                 }
1478         }
1479         return false;
1480 }
1481
1482 function cache_check_param(id, param) {
1483         for (var i = 0; i < article_cache.length; i++) {
1484
1485 //              debug("cache_check_param " + article_cache[i]["id"] + ":" +
1486 //                      article_cache[i]["param"] + " vs " + id + ":" + param);
1487
1488                 if (article_cache[i]["id"] == id && article_cache[i]["param"] == param) {
1489                         return true;
1490                 }
1491         }
1492         return false;
1493 }
1494
1495 function cache_expire() {
1496         while (article_cache.length > 25) {
1497                 article_cache.shift();
1498         }
1499 }
1500
1501 function cache_empty() {
1502         article_cache = new Array();
1503 }
1504
1505 function cache_invalidate(id) {
1506         var i = 0
1507
1508         try {
1509
1510                 while (i < article_cache.length) {
1511                         if (article_cache[i]["id"] == id) {
1512                                 debug("cache_invalidate: removed id " + id);
1513                                 article_cache.splice(i, 1);
1514                                 return true;
1515                         }
1516                         i++;
1517                 }
1518                 debug("cache_invalidate: id not found: " + id);
1519                 return false;
1520         } catch (e) {
1521                 exception_error("cache_invalidate", e);
1522         }
1523 }
1524
1525 function getActiveArticleId() {
1526         return active_post_id;
1527 }
1528
1529 function cdmClicked(id) {
1530         try {
1531                 var elem = document.getElementById("RROW-" + id);
1532
1533                 if (elem) {
1534                         var id = elem.id.replace("RROW-", "");
1535                         active_post_id = id;
1536
1537                         cdmSelectArticles("none");
1538                         toggleUnread(id, 0, true);
1539                         toggleSelected(id);
1540
1541                 }
1542         } catch (e) {
1543                 exception_error("cdmClicked", e);
1544         }
1545 }
1546
1547 function preload_article_callback(transport) {
1548         try {
1549                 if (transport.responseXML) {
1550                         var articles = transport.responseXML.getElementsByTagName("article");
1551
1552                         for (var i = 0; i < articles.length; i++) {
1553                                 var id = articles[i].getAttribute("id");
1554                                 if (!cache_check(id)) {
1555                                         cache_inject(id, articles[i].firstChild.nodeValue);
1556                                         debug("preloaded article: " + id);
1557                                 }
1558                         }
1559                 }
1560         } catch (e) {
1561                 exception_error("preload_article_callback", e);
1562         }
1563 }
1564
1565 function preloadArticleUnderPointer(id) {
1566         try {
1567                 if (getInitParam("bw_limit") == "1") return;
1568
1569                 if (post_under_pointer == id && !cache_check(id)) {
1570
1571                         debug("trying to preload article " + id);
1572
1573                         var neighbor_ids = getRelativePostIds(id, 1);
1574
1575                         /* only request uncached articles */
1576
1577                         var cids_to_request = Array();
1578
1579                         for (var i = 0; i < neighbor_ids.length; i++) {
1580                                 if (!cache_check(neighbor_ids[i])) {
1581                                         cids_to_request.push(neighbor_ids[i]);
1582                                 }
1583                         }
1584                         debug("additional ids: " + cids_to_request.toString());
1585
1586                         cids_to_request.push(id);
1587
1588                         var query = "backend.php?op=rpc&subop=getArticles&ids=" +
1589                                 cids_to_request.toString();
1590                         new Ajax.Request(query, {
1591                                 onComplete: function(transport) {
1592                                         preload_article_callback(transport);
1593                         } });
1594                 }
1595         } catch (e) {
1596                 exception_error("preloadArticleUnderPointer", e);
1597         }
1598 }
1599
1600 function postMouseIn(id) {
1601         try {
1602                 if (post_under_pointer != id) {
1603                         post_under_pointer = id;
1604                         if (!isCdmMode()) {
1605                                 window.setTimeout("preloadArticleUnderPointer(" + id + ")", 250);
1606                         }
1607                 }
1608
1609         } catch (e) {
1610                 exception_error("postMouseIn", e);
1611         }
1612 }
1613
1614 function postMouseOut(id) {
1615         try {
1616                 post_under_pointer = false;
1617         } catch (e) {
1618                 exception_error("postMouseOut", e);
1619         }
1620 }
1621
1622 function headlines_scroll_handler() {
1623         try {
1624
1625                 var e = document.getElementById("headlinesInnerContainer");
1626
1627                 // don't do infinite scrolling when Limit == All
1628
1629                 var toolbar_form = document.forms["main_toolbar_form"];
1630
1631                 var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex];
1632                 if (limit.value != 0) {
1633
1634                         debug((e.scrollTop + e.offsetHeight) + " vs " + e.scrollHeight + " dis? " +
1635                                 _infscroll_disable);
1636
1637                         if (e.scrollTop + e.offsetHeight > e.scrollHeight - 100) {
1638                                 if (!_infscroll_disable) {
1639                                         debug("more cowbell!");
1640                                         viewNextFeedPage();
1641                                 }
1642                         }
1643                 }
1644
1645         } catch (e) {
1646                 exception_error("headlines_scroll_handler", e);
1647         }
1648 }
1649
1650 function catchupRelativeToArticle(below) {
1651
1652         try {
1653
1654                 if (!xmlhttp_ready(xmlhttp_rpc)) {
1655                         printLockingError();
1656                 }
1657
1658                 if (!getActiveArticleId()) {
1659                         alert(__("No article is selected."));
1660                         return;
1661                 }
1662
1663                 var visible_ids;
1664
1665                 if (document.getElementById("headlinesList")) {
1666                         visible_ids = getVisibleHeadlineIds();
1667                 } else {
1668                         visible_ids = cdmGetVisibleArticles();
1669                 }
1670
1671                 var ids_to_mark = new Array();
1672
1673                 if (!below) {
1674                         for (var i = 0; i < visible_ids.length; i++) {
1675                                 if (visible_ids[i] != getActiveArticleId()) {
1676                                         var e = document.getElementById("RROW-" + visible_ids[i]);
1677
1678                                         if (e && e.className.match("Unread")) {
1679                                                 ids_to_mark.push(visible_ids[i]);
1680                                         }
1681                                 } else {
1682                                         break;
1683                                 }
1684                         }
1685                 } else {
1686                         for (var i = visible_ids.length-1; i >= 0; i--) {
1687                                 if (visible_ids[i] != getActiveArticleId()) {
1688                                         var e = document.getElementById("RROW-" + visible_ids[i]);
1689
1690                                         if (e && e.className.match("Unread")) {
1691                                                 ids_to_mark.push(visible_ids[i]);
1692                                         }
1693                                 } else {
1694                                         break;
1695                                 }
1696                         }
1697                 }
1698
1699                 if (ids_to_mark.length == 0) {
1700                         alert(__("No articles found to mark"));
1701                 } else {
1702                         var msg = __("Mark %d article(s) as read?").replace("%d", ids_to_mark.length);
1703
1704                         if (confirm(msg)) {
1705
1706                                 for (var i = 0; i < ids_to_mark.length; i++) {
1707                                         var e = document.getElementById("RROW-" + ids_to_mark[i]);
1708                                         e.className = e.className.replace("Unread", "");
1709                                 }
1710
1711                                 var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
1712                                         param_escape(ids_to_mark.toString()) + "&cmode=0";
1713
1714                                 new Ajax.Request(query, {
1715                                         onComplete: function(transport) {
1716                                                 catchup_callback2(transport);
1717                                         } });
1718
1719                         }
1720                 }
1721
1722         } catch (e) {
1723                 exception_error("catchupRelativeToArticle", e);
1724         }
1725 }
1726
1727 function cdmExpandArticle(a_id) {
1728         try {
1729                 var id = 'CICD-' + a_id;
1730
1731                 try {
1732                         Element.hide("CEXC-" + a_id);
1733                 } catch (e) { }
1734
1735                 Effect.Appear(id, {duration : 0.5,
1736                         beforeStart: function(effect) {
1737                                 var h_id = 'CICH-' + a_id;
1738                                 var h_elem = document.getElementById(h_id);
1739                                 if (h_elem) { h_elem.style.display = "none"; }
1740
1741                                 toggleUnread(a_id, 0);
1742                         }});
1743
1744
1745         } catch (e) {
1746                 exception_error("appearBlockElementF", e);
1747         }
1748
1749 }
1750
1751 function fixHeadlinesOrder(ids) {
1752         try {
1753                 for (var i = 0; i < ids.length; i++) {
1754                         var e = document.getElementById("RROW-" + ids[i]);
1755
1756                         if (e) {
1757                                 if (i % 2 == 0) {
1758                                         e.className = e.className.replace("even", "odd");
1759                                 } else {
1760                                         e.className = e.className.replace("odd", "even");
1761                                 }
1762                         }
1763                 }
1764         } catch (e) {
1765                 exception_error("fixHeadlinesOrder", e);
1766         }
1767 }
1768
1769 function subtoolbarSearch() {
1770         try {
1771
1772                 var q = document.getElementById("subtoolbar_search_box");
1773
1774                 if (!q) return;
1775
1776                 q = q.value.toUpperCase();
1777
1778                 var ids = false;
1779                 var vis_ids = new Array();
1780
1781                 if (document.getElementById("headlinesList")) {
1782                         ids = getVisibleHeadlineIds();
1783                 } else {
1784                         ids = cdmGetVisibleArticles();
1785                 }
1786
1787                 for (var i = 0; i < ids.length; i++) {
1788                         var title = document.getElementById("RTITLE-" + ids[i]);
1789
1790                         if (title) {
1791                                 if (!title.innerHTML.toUpperCase().match(q)) {
1792                                         Element.hide(document.getElementById("RROW-" + ids[i]));
1793                                 } else {
1794                                         Element.show(document.getElementById("RROW-" + ids[i]));
1795                                         vis_ids.push(ids[i]);
1796                                 }
1797                         }
1798                 }
1799
1800                 fixHeadlinesOrder(vis_ids);
1801
1802         } catch (e) {
1803                 exception_error("subtoolbarSearch", e);
1804         }
1805 }
1806
1807 function hideReadHeadlines() {
1808         try {
1809
1810                 var ids = false;
1811                 var vis_ids = new Array();
1812
1813                 if (document.getElementById("headlinesList")) {
1814                         ids = getVisibleHeadlineIds();
1815                 } else {
1816                         ids = cdmGetVisibleArticles();
1817                 }
1818
1819                 var read_headlines_visible = true;
1820
1821                 for (var i = 0; i < ids.length; i++) {
1822                         var row = document.getElementById("RROW-" + ids[i]);
1823
1824                         if (row && row.className) {
1825                                 if (read_headlines_visible) {
1826                                         if (row.className.match("Unread") || row.className.match("Selected")) {
1827                                                 Element.show(row);
1828                                                 vis_ids.push(ids[i]);
1829                                         } else {
1830                                                 //Effect.Fade(row, {duration : 0.3});
1831                                                 Element.hide(row);
1832                                         }
1833                                 } else {
1834                                         Element.show(row);
1835                                         vis_ids.push(ids[i]);
1836                                 }
1837                         }
1838                 }
1839
1840                 fixHeadlinesOrder(vis_ids);
1841
1842                 read_headlines_visible = !read_headlines_visible;
1843
1844         } catch (e) {
1845                 exception_error("hideReadHeadlines", e);
1846         }
1847 }
1848
1849 function getArticleUnderPointer() {
1850         return post_under_pointer;
1851 }