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