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                                 getActiveFeedId() != -3 &&
 224                                 getInitParam("cdm_auto_catchup") == 1) {
 225                         debug("starting CDM watchdog");
 226                         _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 5000);
 227                         _cdm_wd_vishist = new Array();
 228                 } else {
 229                         debug("not in CDM mode or watchdog disabled");
 230                 }
 231
 232                 if (_tag_cdm_scroll) {
 233                         try {
 234                                 document.getElementById("headlinesInnerContainer").scrollTop = _tag_cdm_scroll;
 235                                 _tag_cdm_scroll = false;
 236                                 debug("resetting headlinesInner scrollTop");
 237
 238                         } catch (e) { }
 239                 }
 240
 241                 _feed_cur_page = feed_cur_page;
 242                 _infscroll_request_sent = 0;
 243
 244                 notify("");
 245
 246                 remove_splash();
 247
 248         } catch (e) {
 249                 exception_error("headlines_callback2", e);
 250         }
 251 }
 252
 253 function render_article(article) {
 254         try {
 255                 var f = document.getElementById("content-frame");
 256                 try {
 257                         f.scrollTop = 0;
 258                 } catch (e) { };
 259
 260                 var fi = document.getElementById("content-insert");
 261
 262                 try {
 263                         fi.scrollTop = 0;
 264                 } catch (e) { };
 265
 266                 fi.innerHTML = article;
 267
 268         } catch (e) {
 269                 exception_error("render_article", e);
 270         }
 271 }
 272
 273 function showArticleInHeadlines(id) {
 274
 275         try {
 276
 277                 cleanSelected("headlinesList");
 278
 279                 var crow = document.getElementById("RROW-" + id);
 280
 281                 if (!crow) return;
 282
 283                 var article_is_unread = crow.className.match("Unread");
 284
 285                 crow.className = crow.className.replace("Unread", "");
 286
 287                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
 288
 289                 var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 290
 291                 var cache_prefix = "";
 292
 293                 if (activeFeedIsCat()) {
 294                         cache_prefix = "C:";
 295                 } else {
 296                         cache_prefix = "F:";
 297                 }
 298
 299                 var view_mode = false;
 300
 301                 try {
 302                         view_mode = document.forms['main_toolbar_form'].view_mode;
 303                         view_mode = view_mode[view_mode.selectedIndex].value;
 304                 } catch (e) {
 305                         exception_error("showArticleInHeadlines/viewmode", e, true);
 306                 }
 307
 308                 if (upd_img_pic && upd_img_pic.src.match("updated.png")) {
 309                         upd_img_pic.src = "images/blank_icon.gif";
 310
 311                         cache_invalidate(cache_prefix + getActiveFeedId());
 312
 313                         cache_inject(cache_prefix + getActiveFeedId(),
 314                                 document.getElementById("headlines-frame").innerHTML,
 315                                 get_feed_unread(getActiveFeedId()));
 316
 317                 } else if (article_is_unread && view_mode == "all_articles") {
 318
 319                         cache_invalidate(cache_prefix + getActiveFeedId());
 320
 321                         cache_inject(cache_prefix + getActiveFeedId(),
 322                                 document.getElementById("headlines-frame").innerHTML,
 323                                 get_feed_unread(getActiveFeedId())-1);
 324
 325                 } else if (article_is_unread) {
 326                         cache_invalidate(cache_prefix + getActiveFeedId());
 327                 }
 328
 329                 markHeadline(id);
 330
 331         } catch (e) {
 332                 exception_error("showArticleInHeadlines", e);
 333         }
 334 }
 335
 336 function article_callback2(transport, id, feed_id) {
 337         try {
 338                 debug("article_callback2 " + id);
 339
 340                 if (transport.responseXML) {
 341
 342                         debug("looking for articles to cache...");
 343
 344                         var articles = transport.responseXML.getElementsByTagName("article");
 345
 346                         for (var i = 0; i < articles.length; i++) {
 347                                 var a_id = articles[i].getAttribute("id");
 348
 349                                 debug("found id: " + a_id);
 350
 351                                 if (a_id == active_post_id) {
 352                                         debug("active article, rendering...");
 353                                         render_article(articles[i].firstChild.nodeValue);
 354                                 }
 355
 356                                 cache_inject(a_id, articles[i].firstChild.nodeValue);
 357                         }
 358
 359                         if (id != last_requested_article) {
 360                                 debug("requested article id is out of sequence, aborting");
 361                                 return;
 362                         }
 363
 364                         active_real_feed_id = feed_id;
 365                         active_post_id = id;
 366
 367                         showArticleInHeadlines(id);
 368
 369                         var reply = transport.responseXML.firstChild.firstChild;
 370
 371                 } else {
 372                         debug("article_callback: returned no XML object");
 373                         //var f = document.getElementById("content-frame");
 374                         //f.innerHTML = "<div class='whiteBox'>" + __('Could not display article (missing XML object)') + "</div>";
 375                 }
 376
 377                 var date = new Date();
 378                 last_article_view = date.getTime() / 1000;
 379
 380                 if (typeof correctPNG != 'undefined') {
 381                         correctPNG();
 382                 }
 383
 384                 if (_reload_feedlist_after_view) {
 385                         setTimeout('updateFeedList(false, false)', 50);
 386                         _reload_feedlist_after_view = false;
 387                 } else {
 388                         var counters = transport.responseXML.getElementsByTagName("counters")[0];
 389
 390                         if (counters) {
 391                                 debug("parsing piggybacked counters: " + counters);
 392                                 parse_counters(counters, false);
 393                         } else {
 394                                 debug("counters container not found in reply, requesting...");
 395                                 request_counters();
 396                         }
 397                 }
 398
 399                 notify("");
 400         } catch (e) {
 401                 exception_error("article_callback2", e);
 402         }
 403 }
 404
 405 function view(id, feed_id, skip_history) {
 406
 407         try {
 408                 debug("loading article: " + id + "/" + feed_id);
 409
 410                 var cached_article = cache_find(id);
 411
 412                 debug("cache check result: " + (cached_article != false));
 413
 414                 enableHotkeys();
 415
 416                 //setActiveFeedId(feed_id);
 417
 418                 var query = "backend.php?op=view&id=" + param_escape(id) +
 419                         "&feed=" + param_escape(feed_id);
 420
 421                 var date = new Date();
 422
 423                 var neighbor_ids = getRelativePostIds(active_post_id);
 424
 425                 /* only request uncached articles */
 426
 427                 var cids_to_request = Array();
 428
 429                 for (var i = 0; i < neighbor_ids.length; i++) {
 430                         if (!cache_check(neighbor_ids[i])) {
 431                                 cids_to_request.push(neighbor_ids[i]);
 432                         }
 433                 }
 434
 435                 debug("additional ids: " + cids_to_request.toString());
 436
 437                 /* additional info for piggyback counters */
 438
 439                 if (tagsAreDisplayed()) {
 440                         query = query + "&omode=lt";
 441                 } else {
 442                         query = query + "&omode=flc";
 443                 }
 444
 445                 var date = new Date();
 446                 var timestamp = Math.round(date.getTime() / 1000);
 447                 query = query + "&ts=" + timestamp;
 448
 449                 query = query + "&cids=" + cids_to_request.toString();
 450
 451                 var crow = document.getElementById("RROW-" + id);
 452                 var article_is_unread = crow.className.match("Unread");
 453
 454                 if (!async_counters_work) {
 455                         query = query + "&csync=true";
 456                 }
 457
 458                 showArticleInHeadlines(id);
 459
 460                 if (!cached_article) {
 461
 462                         notify_progress("Loading, please wait...", true);
 463
 464                 } else if (cached_article && article_is_unread) {
 465
 466                         query = query + "&mode=prefetch";
 467
 468                         render_article(cached_article);
 469
 470                 } else if (cached_article) {
 471
 472                         query = query + "&mode=prefetch_old";
 473                         render_article(cached_article);
 474
 475                 }
 476
 477                 cache_expire();
 478
 479                 last_requested_article = id;
 480
 481                 new Ajax.Request(query, {
 482                         onComplete: function(transport) {
 483                                 article_callback2(transport, id, feed_id);
 484                         } });
 485
 486                 return false;
 487
 488         } catch (e) {
 489                 exception_error("view", e);
 490         }
 491 }
 492
 493 function tMark(id) {
 494         return toggleMark(id);
 495 }
 496
 497 function tPub(id) {
 498         return togglePub(id);
 499 }
 500
 501 function tMark_afh_off(effect) {
 502         try {
 503                 var elem = effect.effects[0].element;
 504
 505                 debug("tMark_afh_off : " + elem.id);
 506
 507                 if (elem) {
 508                         elem.src = elem.src.replace("mark_set", "mark_unset");
 509                         elem.alt = __("Star article");
 510                         Element.show(elem);
 511                 }
 512
 513         } catch (e) {
 514                 exception_error("tMark_afh_off", e);
 515         }
 516 }
 517
 518 function tPub_afh_off(effect) {
 519         try {
 520                 var elem = effect.effects[0].element;
 521
 522                 debug("tPub_afh_off : " + elem.id);
 523
 524                 if (elem) {
 525                         elem.src = elem.src.replace("pub_set", "pub_unset");
 526                         elem.alt = __("Publish article");
 527                         Element.show(elem);
 528                 }
 529
 530         } catch (e) {
 531                 exception_error("tPub_afh_off", e);
 532         }
 533 }
 534
 535 function toggleMark(id, client_only, no_effects) {
 536
 537         try {
 538
 539                 var query = "backend.php?op=rpc&id=" + id + "&subop=mark";
 540
 541                 query = query + "&afid=" + getActiveFeedId();
 542
 543                 if (tagsAreDisplayed()) {
 544                         query = query + "&omode=tl";
 545                 } else {
 546                         query = query + "&omode=flc";
 547                 }
 548
 549                 var mark_img = document.getElementById("FMPIC-" + id);
 550                 var vfeedu = document.getElementById("FEEDU--1");
 551                 var crow = document.getElementById("RROW-" + id);
 552
 553                 if (mark_img.src.match("mark_unset")) {
 554                         mark_img.src = mark_img.src.replace("mark_unset", "mark_set");
 555                         mark_img.alt = __("Unstar article");
 556                         query = query + "&mark=1";
 557
 558                 } else {
 559                         //mark_img.src = "images/mark_unset.png";
 560                         mark_img.alt = __("Please wait...");
 561                         query = query + "&mark=0";
 562
 563                         if (document.getElementById("headlinesList") && !no_effects) {
 564                                 Effect.Puff(mark_img, {duration : 0.25, afterFinish: tMark_afh_off});
 565                         } else {
 566                                 mark_img.src = mark_img.src.replace("mark_set", "mark_unset");
 567                                 mark_img.alt = __("Star article");
 568                         }
 569                 }
 570
 571                 if (!client_only) {
 572                         debug(query);
 573
 574                         new Ajax.Request(query, {
 575                                 onComplete: function(transport) {
 576                                         all_counters_callback2(transport);
 577                                 } });
 578
 579                 }
 580
 581         } catch (e) {
 582                 exception_error("toggleMark", e);
 583         }
 584 }
 585
 586 function togglePub(id, client_only, no_effects) {
 587
 588         try {
 589
 590                 var query = "backend.php?op=rpc&id=" + id + "&subop=publ";
 591
 592                 query = query + "&afid=" + getActiveFeedId();
 593
 594                 if (tagsAreDisplayed()) {
 595                         query = query + "&omode=tl";
 596                 } else {
 597                         query = query + "&omode=flc";
 598                 }
 599
 600                 var mark_img = document.getElementById("FPPIC-" + id);
 601                 var vfeedu = document.getElementById("FEEDU--2");
 602                 var crow = document.getElementById("RROW-" + id);
 603
 604                 if (mark_img.src.match("pub_unset")) {
 605                         mark_img.src = mark_img.src.replace("pub_unset", "pub_set");
 606                         mark_img.alt = __("Unpublish article");
 607                         query = query + "&pub=1";
 608
 609
 610                 } else {
 611                         //mark_img.src = "images/pub_unset.png";
 612                         mark_img.alt = __("Please wait...");
 613                         query = query + "&pub=0";
 614
 615                         if (document.getElementById("headlinesList") && !no_effects) {
 616                                 Effect.Puff(mark_img, {duration : 0.25, afterFinish: tPub_afh_off});
 617                         } else {
 618                                 mark_img.src = mark_img.src.replace("pub_set", "pub_unset");
 619                                 mark_img.alt = __("Publish article");
 620                         }
 621                 }
 622
 623                 if (!client_only) {
 624                         new Ajax.Request(query, {
 625                                 onComplete: function(transport) {
 626                                         all_counters_callback2(transport);
 627                                 } });
 628                 }
 629
 630         } catch (e) {
 631
 632                 exception_error("togglePub", e);
 633         }
 634 }
 635
 636 function correctHeadlinesOffset(id) {
 637
 638         try {
 639
 640                 var hlist = document.getElementById("headlinesList");
 641                 var container = document.getElementById("headlinesInnerContainer");
 642                 var row = document.getElementById("RROW-" + id);
 643
 644                 var viewport = container.offsetHeight;
 645
 646                 var rel_offset_top = row.offsetTop - container.scrollTop;
 647                 var rel_offset_bottom = row.offsetTop + row.offsetHeight - container.scrollTop;
 648
 649                 debug("Rtop: " + rel_offset_top + " Rbtm: " + rel_offset_bottom);
 650                 debug("Vport: " + viewport);
 651
 652                 if (rel_offset_top <= 0 || rel_offset_top > viewport) {
 653                         container.scrollTop = row.offsetTop;
 654                 } else if (rel_offset_bottom > viewport) {
 655
 656                         /* doesn't properly work with Opera in some cases because
 657                                 Opera fucks up element scrolling */
 658
 659                         container.scrollTop = row.offsetTop + row.offsetHeight - viewport;
 660                 }
 661
 662         } catch (e) {
 663                 exception_error("correctHeadlinesOffset", e);
 664         }
 665
 666 }
 667
 668 function moveToPost(mode) {
 669
 670         try {
 671
 672                 var rows;
 673
 674                 if (isCdmMode()) {
 675                         rows = cdmGetVisibleArticles();
 676                 } else {
 677                         rows = getVisibleHeadlineIds();
 678                 }
 679
 680                 var prev_id = false;
 681                 var next_id = false;
 682
 683                 if (!document.getElementById('RROW-' + active_post_id)) {
 684                         active_post_id = false;
 685                 }
 686
 687                 if (active_post_id == false) {
 688                         next_id = getFirstVisibleHeadlineId();
 689                         prev_id = getLastVisibleHeadlineId();
 690                 } else {
 691                         for (var i = 0; i < rows.length; i++) {
 692                                 if (rows[i] == active_post_id) {
 693                                         prev_id = rows[i-1];
 694                                         next_id = rows[i+1];
 695                                 }
 696                         }
 697                 }
 698
 699                 if (mode == "next") {
 700                         if (next_id) {
 701                                 if (isCdmMode()) {
 702
 703                                         if (!cdmArticleIsActuallyVisible(next_id)) {
 704                                                 cdmScrollToArticleId(next_id);
 705                                         }
 706                                         cdmSelectArticles("none");
 707                                         toggleUnread(next_id, 0, true);
 708                                         toggleSelected(next_id);
 709
 710                                 } else {
 711                                         correctHeadlinesOffset(next_id);
 712                                         view(next_id, getActiveFeedId());
 713                                 }
 714                         }
 715                 }
 716
 717                 if (mode == "prev") {
 718                         if (prev_id) {
 719                                 if (isCdmMode()) {
 720                                         cdmScrollToArticleId(prev_id);
 721                                         cdmSelectArticles("none");
 722                                         toggleUnread(prev_id, 0, true);
 723                                         toggleSelected(prev_id);
 724                                 } else {
 725                                         correctHeadlinesOffset(prev_id);
 726                                         view(prev_id, getActiveFeedId());
 727                                 }
 728                         }
 729                 }
 730
 731         } catch (e) {
 732                 exception_error("moveToPost", e);
 733         }
 734 }
 735
 736 function toggleSelected(id) {
 737         try {
 738
 739                 var cb = document.getElementById("RCHK-" + id);
 740
 741                 var row = document.getElementById("RROW-" + id);
 742                 if (row) {
 743                         var nc = row.className;
 744
 745                         if (!nc.match("Selected")) {
 746                                 nc = nc + "Selected";
 747                                 if (cb) {
 748                                         cb.checked = true;
 749                                 }
 750
 751                                 // In CDM basically last selected article == active article
 752                                 if (isCdmMode()) active_post_id = id;
 753                         } else {
 754                                 nc = nc.replace("Selected", "");
 755                                 if (cb) {
 756                                         cb.checked = false;
 757                                 }
 758
 759                         }
 760
 761                         row.className = nc;
 762                 }
 763         } catch (e) {
 764                 exception_error("toggleSelected", e);
 765         }
 766 }
 767
 768 function toggleUnread_afh(effect) {
 769         try {
 770
 771                 var elem = effect.element;
 772                 elem.style.backgroundColor = "";
 773
 774         } catch (e) {
 775                 exception_error("toggleUnread_afh", e);
 776         }
 777 }
 778
 779 function toggleUnread(id, cmode, effect) {
 780         try {
 781
 782                 var row = document.getElementById("RROW-" + id);
 783                 if (row) {
 784                         var nc = row.className;
 785                         var is_selected = row.className.match("Selected");
 786                         nc = nc.replace("Unread", "");
 787                         nc = nc.replace("Selected", "");
 788
 789                         // since we are removing selection from the object, uncheck
 790                         // corresponding checkbox
 791
 792                         var cb = document.getElementById("RCHK-" + id);
 793                         if (cb) {
 794                                 cb.checked = false;
 795                         }
 796
 797                         // NOTE: I'm not sure that resetting selection here is a feature -fox
 798
 799                         if (cmode == undefined || cmode == 2) {
 800                                 if (row.className.match("Unread")) {
 801                                         row.className = nc;
 802
 803                                         if (effect) {
 804                                                 new Effect.Highlight(row, {duration: 1, startcolor: "#fff7d5",
 805                                                         afterFinish: toggleUnread_afh,
 806                                                         queue: { position:'end', scope: 'TMRQ-' + id, limit: 1 } } );
 807                                         }
 808
 809                                 } else {
 810                                         row.className = nc + "Unread";
 811                                 }
 812                         } else if (cmode == 0) {
 813                                 row.className = nc;
 814
 815                                 if (effect) {
 816                                         new Effect.Highlight(row, {duration: 1, startcolor: "#fff7d5",
 817                                                 afterFinish: toggleUnread_afh,
 818                                                 queue: { position:'end', scope: 'TMRQ-' + id, limit: 1 } } );
 819                                 }
 820                         } else if (cmode == 1) {
 821                                 row.className = nc + "Unread";
 822                         }
 823
 824                         // Disable unmarking as selected for the time being (16.05.08) -fox
 825                         if (is_selected) row.className = row.className + "Selected";
 826
 827                         if (cmode == undefined) cmode = 2;
 828
 829                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 830                                 param_escape(id) + "&cmode=" + param_escape(cmode);
 831
 832 //                      notify_progress("Loading, please wait...");
 833
 834                         new Ajax.Request(query, {
 835                                 onComplete: function(transport) {
 836                                         all_counters_callback2(transport);
 837                                 } });
 838
 839                 }
 840
 841
 842         } catch (e) {
 843                 exception_error("toggleUnread", e);
 844         }
 845 }
 846
 847 function selectionToggleUnread(cdm_mode, set_state, callback_func, no_error) {
 848         try {
 849                 var rows;
 850
 851                 if (cdm_mode) {
 852                         rows = cdmGetSelectedArticles();
 853                 } else {
 854                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 855                 }
 856
 857                 if (rows.length == 0 && !no_error) {
 858                         alert(__("No articles are selected."));
 859                         return;
 860                 }
 861
 862                 for (i = 0; i < rows.length; i++) {
 863                         var row = document.getElementById("RROW-" + rows[i]);
 864                         if (row) {
 865                                 var nc = row.className;
 866                                 nc = nc.replace("Unread", "");
 867                                 nc = nc.replace("Selected", "");
 868
 869                                 if (set_state == undefined) {
 870                                         if (row.className.match("Unread")) {
 871                                                 row.className = nc + "Selected";
 872                                         } else {
 873                                                 row.className = nc + "UnreadSelected";
 874                                         }
 875                                 }
 876
 877                                 if (set_state == false) {
 878                                         row.className = nc + "Selected";
 879                                 }
 880
 881                                 if (set_state == true) {
 882                                         row.className = nc + "UnreadSelected";
 883                                 }
 884                         }
 885                 }
 886
 887                 if (rows.length > 0) {
 888
 889                         var cmode = "";
 890
 891                         if (set_state == undefined) {
 892                                 cmode = "2";
 893                         } else if (set_state == true) {
 894                                 cmode = "1";
 895                         } else if (set_state == false) {
 896                                 cmode = "0";
 897                         }
 898
 899                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 900                                 param_escape(rows.toString()) + "&cmode=" + cmode;
 901
 902                         notify_progress("Loading, please wait...");
 903
 904                         new Ajax.Request(query, {
 905                                 onComplete: function(transport) {
 906                                         catchup_callback2(transport, callback_func);
 907                                 } });
 908
 909                 }
 910
 911         } catch (e) {
 912                 exception_error("selectionToggleUnread", e);
 913         }
 914 }
 915
 916 function selectionToggleMarked(cdm_mode) {
 917         try {
 918
 919                 var rows;
 920
 921                 if (cdm_mode) {
 922                         rows = cdmGetSelectedArticles();
 923                 } else {
 924                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 925                 }
 926
 927                 if (rows.length == 0) {
 928                         alert(__("No articles are selected."));
 929                         return;
 930                 }
 931
 932                 for (i = 0; i < rows.length; i++) {
 933                         toggleMark(rows[i], true, true);
 934                 }
 935
 936                 if (rows.length > 0) {
 937
 938                         var query = "backend.php?op=rpc&subop=markSelected&ids=" +
 939                                 param_escape(rows.toString()) + "&cmode=2";
 940
 941                         query = query + "&afid=" + getActiveFeedId();
 942
 943 /*                      if (tagsAreDisplayed()) {
 944                                 query = query + "&omode=tl";
 945                         } else {
 946                                 query = query + "&omode=flc";
 947                         } */
 948
 949                         query = query + "&omode=lc";
 950
 951                         new Ajax.Request(query, {
 952                                 onComplete: function(transport) {
 953                                         all_counters_callback2(transport);
 954                                 } });
 955
 956                 }
 957
 958         } catch (e) {
 959                 exception_error("selectionToggleMarked", e);
 960         }
 961 }
 962
 963 function selectionTogglePublished(cdm_mode) {
 964         try {
 965
 966                 var rows;
 967
 968                 if (cdm_mode) {
 969                         rows = cdmGetSelectedArticles();
 970                 } else {
 971                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 972                 }
 973
 974                 if (rows.length == 0) {
 975                         alert(__("No articles are selected."));
 976                         return;
 977                 }
 978
 979                 for (i = 0; i < rows.length; i++) {
 980                         togglePub(rows[i], true, true);
 981                 }
 982
 983                 if (rows.length > 0) {
 984
 985                         var query = "backend.php?op=rpc&subop=publishSelected&ids=" +
 986                                 param_escape(rows.toString()) + "&cmode=2";
 987
 988                         query = query + "&afid=" + getActiveFeedId();
 989
 990 /*                      if (tagsAreDisplayed()) {
 991                                 query = query + "&omode=tl";
 992                         } else {
 993                                 query = query + "&omode=flc";
 994                         } */
 995
 996                         query = query + "&omode=lc";
 997
 998                         new Ajax.Request(query, {
 999                                 onComplete: function(transport) {
1000                                         all_counters_callback2(transport);
1001                                 } });
1002
1003                 }
1004
1005         } catch (e) {
1006                 exception_error("selectionToggleMarked", e);
1007         }
1008 }
1009
1010 function cdmGetSelectedArticles() {
1011         var sel_articles = new Array();
1012         var container = document.getElementById("headlinesInnerContainer");
1013
1014         for (i = 0; i < container.childNodes.length; i++) {
1015                 var child = container.childNodes[i];
1016
1017                 if (child.id && child.id.match("RROW-") && child.className.match("Selected")) {
1018                         var c_id = child.id.replace("RROW-", "");
1019                         sel_articles.push(c_id);
1020                 }
1021         }
1022
1023         return sel_articles;
1024 }
1025
1026 function cdmGetVisibleArticles() {
1027         var sel_articles = new Array();
1028         var container = document.getElementById("headlinesInnerContainer");
1029
1030         if (!container) return sel_articles;
1031
1032         for (i = 0; i < container.childNodes.length; i++) {
1033                 var child = container.childNodes[i];
1034
1035                 if (child.id && child.id.match("RROW-")) {
1036                         var c_id = child.id.replace("RROW-", "");
1037                         sel_articles.push(c_id);
1038                 }
1039         }
1040
1041         return sel_articles;
1042 }
1043
1044 function cdmGetUnreadArticles() {
1045         var sel_articles = new Array();
1046         var container = document.getElementById("headlinesInnerContainer");
1047
1048         for (i = 0; i < container.childNodes.length; i++) {
1049                 var child = container.childNodes[i];
1050
1051                 if (child.id && child.id.match("RROW-") && child.className.match("Unread")) {
1052                         var c_id = child.id.replace("RROW-", "");
1053                         sel_articles.push(c_id);
1054                 }
1055         }
1056
1057         return sel_articles;
1058 }
1059
1060
1061 // mode = all,none,unread
1062 function cdmSelectArticles(mode) {
1063         var container = document.getElementById("headlinesInnerContainer");
1064
1065         for (i = 0; i < container.childNodes.length; i++) {
1066                 var child = container.childNodes[i];
1067
1068                 if (child.id && child.id.match("RROW-")) {
1069                         var aid = child.id.replace("RROW-", "");
1070
1071                         var cb = document.getElementById("RCHK-" + aid);
1072
1073                         if (mode == "all") {
1074                                 if (!child.className.match("Selected")) {
1075                                         child.className = child.className + "Selected";
1076                                         cb.checked = true;
1077                                 }
1078                         } else if (mode == "unread") {
1079                                 if (child.className.match("Unread") && !child.className.match("Selected")) {
1080                                         child.className = child.className + "Selected";
1081                                         cb.checked = true;
1082                                 }
1083                         } else {
1084                                 child.className = child.className.replace("Selected", "");
1085                                 cb.checked = false;
1086                         }
1087                 }
1088         }
1089 }
1090
1091 function catchupPage() {
1092
1093         var fn = getFeedName(getActiveFeedId(), active_feed_is_cat);
1094
1095         var str = __("Mark all visible articles in %s as read?");
1096
1097         str = str.replace("%s", fn);
1098
1099         if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
1100                 return;
1101         }
1102
1103         if (document.getElementById("headlinesList")) {
1104                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true);
1105                 selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
1106                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
1107         } else {
1108                 cdmSelectArticles('all');
1109                 selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
1110                 cdmSelectArticles('none');
1111         }
1112 }
1113
1114 function catchupSelection() {
1115
1116         try {
1117
1118                 var rows;
1119
1120                 if (document.getElementById("headlinesList")) {
1121                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1122                 } else {
1123                         rows = cdmGetSelectedArticles();
1124                 }
1125
1126                 if (rows.length == 0) {
1127                         alert(__("No articles are selected."));
1128                         return;
1129                 }
1130
1131
1132                 var fn = getFeedName(getActiveFeedId(), active_feed_is_cat);
1133
1134                 var str = __("Mark %d selected articles in %s as read?");
1135
1136                 str = str.replace("%d", rows.length);
1137                 str = str.replace("%s", fn);
1138
1139                 if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
1140                         return;
1141                 }
1142
1143                 if (document.getElementById("headlinesList")) {
1144                         selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
1145         //              selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
1146                 } else {
1147                         selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
1148         //              cdmSelectArticles('none');
1149                 }
1150
1151         } catch (e) {
1152                 exception_error("catchupSelection", e);
1153         }
1154 }
1155
1156
1157 function labelFromSearch(search, search_mode, match_on, feed_id, is_cat) {
1158
1159         if (!xmlhttp_ready(xmlhttp_rpc)) {
1160                 printLockingError();
1161         }
1162
1163         var title = prompt(__("Please enter label title:"), "");
1164
1165         if (title) {
1166
1167                 var query = "backend.php?op=labelFromSearch&search=" + param_escape(search) +
1168                         "&smode=" + param_escape(search_mode) + "&match=" + param_escape(match_on) +
1169                         "&feed=" + param_escape(feed_id) + "&is_cat=" + param_escape(is_cat) +
1170                         "&title=" + param_escape(title);
1171
1172                 debug("LFS: " + query);
1173
1174                 new Ajax.Request(query, {
1175                         onComplete: function(transport) {
1176                                         dlg_frefresh_callback(transport);
1177                                 } });
1178         }
1179 }
1180
1181 function editArticleTags(id, feed_id, cdm_enabled) {
1182         _tag_active_post_id = id;
1183         _tag_active_feed_id = feed_id;
1184         _tag_active_cdm = cdm_enabled;
1185
1186         cache_invalidate(id);
1187
1188         try {
1189                 _tag_cdm_scroll = document.getElementById("headlinesInnerContainer").scrollTop;
1190         } catch (e) { }
1191         displayDlg('editArticleTags', id);
1192 }
1193
1194
1195 function tag_saved_callback(transport) {
1196         try {
1197                 debug("in tag_saved_callback");
1198
1199                 closeInfoBox();
1200                 notify("");
1201
1202                 if (tagsAreDisplayed()) {
1203                         _reload_feedlist_after_view = true;
1204                 }
1205
1206                 if (!_tag_active_cdm) {
1207                         if (active_post_id == _tag_active_post_id) {
1208                                 debug("reloading current article");
1209                                 view(_tag_active_post_id, _tag_active_feed_id);
1210                         }
1211                 } else {
1212                         debug("reloading current feed");
1213                         viewCurrentFeed();
1214                 }
1215
1216         } catch (e) {
1217                 exception_error("catchup_callback", e);
1218         }
1219 }
1220
1221 function editTagsSave() {
1222
1223         notify_progress("Saving article tags...");
1224
1225         var form = document.forms["tag_edit_form"];
1226
1227         var query = Form.serialize("tag_edit_form");
1228
1229         query = "backend.php?op=rpc&subop=setArticleTags&" + query;
1230
1231         debug(query);
1232
1233         new Ajax.Request(query, {
1234                 onComplete: function(transport) {
1235                                 tag_saved_callback(transport);
1236                         } });
1237
1238 }
1239
1240 function editTagsInsert() {
1241         try {
1242
1243                 var form = document.forms["tag_edit_form"];
1244
1245                 var found_tags = form.found_tags;
1246                 var tags_str = form.tags_str;
1247
1248                 var tag = found_tags[found_tags.selectedIndex].value;
1249
1250                 if (tags_str.value.length > 0 &&
1251                                 tags_str.value.lastIndexOf(", ") != tags_str.value.length - 2) {
1252
1253                         tags_str.value = tags_str.value + ", ";
1254                 }
1255
1256                 tags_str.value = tags_str.value + tag + ", ";
1257
1258                 found_tags.selectedIndex = 0;
1259
1260         } catch (e) {
1261                 exception_error("editTagsInsert", e);
1262         }
1263 }
1264
1265 function cdmScrollViewport(where) {
1266         debug("cdmScrollViewport: " + where);
1267
1268         var ctr = document.getElementById("headlinesInnerContainer");
1269
1270         if (!ctr) return;
1271
1272         if (where == "bottom") {
1273                 ctr.scrollTop = ctr.scrollHeight;
1274         } else {
1275                 ctr.scrollTop = where;
1276         }
1277 }
1278
1279 function cdmArticleIsBelowViewport(id) {
1280         try {
1281                 var ctr = document.getElementById("headlinesInnerContainer");
1282                 var e = document.getElementById("RROW-" + id);
1283
1284                 if (!e || !ctr) return;
1285
1286                 // article starts below viewport
1287
1288                 if (ctr.scrollTop < e.offsetTop) {
1289                         return true;
1290                 } else {
1291                         return false;
1292                 }
1293
1294         } catch (e) {
1295                 exception_error("cdmArticleIsVisible", e);
1296         }
1297 }
1298
1299 function cdmArticleIsAboveViewport(id) {
1300         try {
1301                 var ctr = document.getElementById("headlinesInnerContainer");
1302                 var e = document.getElementById("RROW-" + id);
1303
1304                 if (!e || !ctr) return;
1305
1306                 // article starts above viewport
1307
1308                 if (ctr.scrollTop > e.offsetTop + e.offsetHeight) {
1309                         return true;
1310                 } else {
1311                         return false;
1312                 }
1313
1314         } catch (e) {
1315                 exception_error("cdmArticleIsVisible", e);
1316         }
1317 }
1318
1319 function cdmScrollToArticleId(id) {
1320         try {
1321                 var ctr = document.getElementById("headlinesInnerContainer");
1322                 var e = document.getElementById("RROW-" + id);
1323
1324                 if (!e || !ctr) return;
1325
1326                 ctr.scrollTop = e.offsetTop;
1327
1328         } catch (e) {
1329                 exception_error("cdmScrollToArticleId", e);
1330         }
1331 }
1332
1333 function cdmArticleIsActuallyVisible(id) {
1334         try {
1335                 var ctr = document.getElementById("headlinesInnerContainer");
1336                 var e = document.getElementById("RROW-" + id);
1337
1338                 if (!e || !ctr) return;
1339
1340                 // article fits in viewport OR article is longer than viewport and
1341                 // its bottom is visible
1342
1343                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
1344                                 ctr.scrollTop + ctr.offsetHeight) {
1345
1346                         return true;
1347
1348                 } else if (e.offsetHeight > ctr.offsetHeight &&
1349                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1350                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
1351
1352                         return true;
1353
1354                 }
1355
1356                 return false;
1357
1358         } catch (e) {
1359                 exception_error("cdmArticleIsVisible", e);
1360         }
1361 }
1362
1363 function cdmWatchdog() {
1364
1365         try {
1366
1367                 var ctr = document.getElementById("headlinesInnerContainer");
1368
1369                 if (!ctr) return;
1370
1371                 var ids = new Array();
1372
1373                 var e = ctr.firstChild;
1374
1375                 while (e) {
1376                         if (e.className && e.className == "cdmArticleUnread" && e.id &&
1377                                         e.id.match("RROW-")) {
1378
1379                                 // article fits in viewport OR article is longer than viewport and
1380                                 // its bottom is visible
1381
1382                                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
1383                                                 ctr.scrollTop + ctr.offsetHeight) {
1384
1385 //                                      debug(e.id + " is visible " + e.offsetTop + "." +
1386 //                                              (e.offsetTop + e.offsetHeight) + " vs " + ctr.scrollTop + "." +
1387 //                                              (ctr.scrollTop + ctr.offsetHeight));
1388
1389                                         ids.push(e.id.replace("RROW-", ""));
1390
1391                                 } else if (e.offsetHeight > ctr.offsetHeight &&
1392                                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1393                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
1394
1395                                         ids.push(e.id.replace("RROW-", ""));
1396
1397                                 }
1398
1399                                 // method 2: article bottom is visible and is in upper 1/2 of the viewport
1400
1401 /*                              if (e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1402                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight/2) {
1403
1404                                         ids.push(e.id.replace("RROW-", ""));
1405
1406                                 } */
1407
1408                         }
1409
1410                         e = e.nextSibling;
1411                 }
1412
1413                 debug("cdmWatchdog, ids= " + ids.toString());
1414
1415                 if (ids.length > 0) {
1416
1417                         for (var i = 0; i < ids.length; i++) {
1418                                 var e = document.getElementById("RROW-" + ids[i]);
1419                                 if (e) {
1420                                         e.className = e.className.replace("Unread", "");
1421                                 }
1422                         }
1423
1424                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
1425                                 param_escape(ids.toString()) + "&cmode=0";
1426
1427                         new Ajax.Request(query, {
1428                                 onComplete: function(transport) {
1429                                         all_counters_callback2(transport);
1430                                 } });
1431
1432                 }
1433
1434                 _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 4000);
1435
1436         } catch (e) {
1437                 exception_error("cdmWatchdog", e);
1438         }
1439
1440 }
1441
1442
1443 function cache_inject(id, article, param) {
1444         if (!cache_check_param(id, param)) {
1445                 debug("cache_article: miss: " + id + " [p=" + param + "]");
1446
1447                 var cache_obj = new Array();
1448
1449                 cache_obj["id"] = id;
1450                 cache_obj["data"] = article;
1451                 cache_obj["param"] = param;
1452
1453                 article_cache.push(cache_obj);
1454
1455         } else {
1456                 debug("cache_article: hit: " + id + " [p=" + param + "]");
1457         }
1458 }
1459
1460 function cache_find(id) {
1461         for (var i = 0; i < article_cache.length; i++) {
1462                 if (article_cache[i]["id"] == id) {
1463                         return article_cache[i]["data"];
1464                 }
1465         }
1466         return false;
1467 }
1468
1469 function cache_find_param(id, param) {
1470         for (var i = 0; i < article_cache.length; i++) {
1471                 if (article_cache[i]["id"] == id && article_cache[i]["param"] == param) {
1472                         return article_cache[i]["data"];
1473                 }
1474         }
1475         return false;
1476 }
1477
1478 function cache_check(id) {
1479         for (var i = 0; i < article_cache.length; i++) {
1480                 if (article_cache[i]["id"] == id) {
1481                         return true;
1482                 }
1483         }
1484         return false;
1485 }
1486
1487 function cache_check_param(id, param) {
1488         for (var i = 0; i < article_cache.length; i++) {
1489
1490 //              debug("cache_check_param " + article_cache[i]["id"] + ":" +
1491 //                      article_cache[i]["param"] + " vs " + id + ":" + param);
1492
1493                 if (article_cache[i]["id"] == id && article_cache[i]["param"] == param) {
1494                         return true;
1495                 }
1496         }
1497         return false;
1498 }
1499
1500 function cache_expire() {
1501         while (article_cache.length > 25) {
1502                 article_cache.shift();
1503         }
1504 }
1505
1506 function cache_empty() {
1507         article_cache = new Array();
1508 }
1509
1510 function cache_invalidate(id) {
1511         var i = 0
1512
1513         try {
1514
1515                 while (i < article_cache.length) {
1516                         if (article_cache[i]["id"] == id) {
1517                                 debug("cache_invalidate: removed id " + id);
1518                                 article_cache.splice(i, 1);
1519                                 return true;
1520                         }
1521                         i++;
1522                 }
1523                 debug("cache_invalidate: id not found: " + id);
1524                 return false;
1525         } catch (e) {
1526                 exception_error("cache_invalidate", e);
1527         }
1528 }
1529
1530 function getActiveArticleId() {
1531         return active_post_id;
1532 }
1533
1534 function cdmClicked(id) {
1535         try {
1536                 var elem = document.getElementById("RROW-" + id);
1537
1538                 if (elem) {
1539                         var id = elem.id.replace("RROW-", "");
1540                         active_post_id = id;
1541
1542                         cdmSelectArticles("none");
1543                         toggleUnread(id, 0, true);
1544                         toggleSelected(id);
1545
1546                 }
1547         } catch (e) {
1548                 exception_error("cdmClicked", e);
1549         }
1550 }
1551
1552 function preload_article_callback(transport) {
1553         try {
1554                 if (transport.responseXML) {
1555                         var articles = transport.responseXML.getElementsByTagName("article");
1556
1557                         for (var i = 0; i < articles.length; i++) {
1558                                 var id = articles[i].getAttribute("id");
1559                                 if (!cache_check(id)) {
1560                                         cache_inject(id, articles[i].firstChild.nodeValue);
1561                                         debug("preloaded article: " + id);
1562                                 }
1563                         }
1564                 }
1565         } catch (e) {
1566                 exception_error("preload_article_callback", e);
1567         }
1568 }
1569
1570 function preloadArticleUnderPointer(id) {
1571         try {
1572                 if (getInitParam("bw_limit") == "1") return;
1573
1574                 if (post_under_pointer == id && !cache_check(id)) {
1575
1576                         debug("trying to preload article " + id);
1577
1578                         var neighbor_ids = getRelativePostIds(id, 1);
1579
1580                         /* only request uncached articles */
1581
1582                         var cids_to_request = Array();
1583
1584                         for (var i = 0; i < neighbor_ids.length; i++) {
1585                                 if (!cache_check(neighbor_ids[i])) {
1586                                         cids_to_request.push(neighbor_ids[i]);
1587                                 }
1588                         }
1589                         debug("additional ids: " + cids_to_request.toString());
1590
1591                         cids_to_request.push(id);
1592
1593                         var query = "backend.php?op=rpc&subop=getArticles&ids=" +
1594                                 cids_to_request.toString();
1595                         new Ajax.Request(query, {
1596                                 onComplete: function(transport) {
1597                                         preload_article_callback(transport);
1598                         } });
1599                 }
1600         } catch (e) {
1601                 exception_error("preloadArticleUnderPointer", e);
1602         }
1603 }
1604
1605 function postMouseIn(id) {
1606         try {
1607                 if (post_under_pointer != id) {
1608                         post_under_pointer = id;
1609                         if (!isCdmMode()) {
1610                                 window.setTimeout("preloadArticleUnderPointer(" + id + ")", 250);
1611                         }
1612                 }
1613
1614         } catch (e) {
1615                 exception_error("postMouseIn", e);
1616         }
1617 }
1618
1619 function postMouseOut(id) {
1620         try {
1621                 post_under_pointer = false;
1622         } catch (e) {
1623                 exception_error("postMouseOut", e);
1624         }
1625 }
1626
1627 function headlines_scroll_handler() {
1628         try {
1629
1630                 var e = document.getElementById("headlinesInnerContainer");
1631
1632                 // don't do infinite scrolling when Limit == All
1633
1634                 var toolbar_form = document.forms["main_toolbar_form"];
1635
1636                 var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex];
1637                 if (limit.value != 0) {
1638
1639                         debug((e.scrollTop + e.offsetHeight) + " vs " + e.scrollHeight + " dis? " +
1640                                 _infscroll_disable);
1641
1642                         if (e.scrollTop + e.offsetHeight > e.scrollHeight - 100) {
1643                                 if (!_infscroll_disable) {
1644                                         debug("more cowbell!");
1645                                         viewNextFeedPage();
1646                                 }
1647                         }
1648                 }
1649
1650         } catch (e) {
1651                 exception_error("headlines_scroll_handler", e);
1652         }
1653 }
1654
1655 function catchupRelativeToArticle(below) {
1656
1657         try {
1658
1659                 if (!xmlhttp_ready(xmlhttp_rpc)) {
1660                         printLockingError();
1661                 }
1662
1663                 if (!getActiveArticleId()) {
1664                         alert(__("No article is selected."));
1665                         return;
1666                 }
1667
1668                 var visible_ids;
1669
1670                 if (document.getElementById("headlinesList")) {
1671                         visible_ids = getVisibleHeadlineIds();
1672                 } else {
1673                         visible_ids = cdmGetVisibleArticles();
1674                 }
1675
1676                 var ids_to_mark = new Array();
1677
1678                 if (!below) {
1679                         for (var i = 0; i < visible_ids.length; i++) {
1680                                 if (visible_ids[i] != getActiveArticleId()) {
1681                                         var e = document.getElementById("RROW-" + visible_ids[i]);
1682
1683                                         if (e && e.className.match("Unread")) {
1684                                                 ids_to_mark.push(visible_ids[i]);
1685                                         }
1686                                 } else {
1687                                         break;
1688                                 }
1689                         }
1690                 } else {
1691                         for (var i = visible_ids.length-1; i >= 0; i--) {
1692                                 if (visible_ids[i] != getActiveArticleId()) {
1693                                         var e = document.getElementById("RROW-" + visible_ids[i]);
1694
1695                                         if (e && e.className.match("Unread")) {
1696                                                 ids_to_mark.push(visible_ids[i]);
1697                                         }
1698                                 } else {
1699                                         break;
1700                                 }
1701                         }
1702                 }
1703
1704                 if (ids_to_mark.length == 0) {
1705                         alert(__("No articles found to mark"));
1706                 } else {
1707                         var msg = __("Mark %d article(s) as read?").replace("%d", ids_to_mark.length);
1708
1709                         if (confirm(msg)) {
1710
1711                                 for (var i = 0; i < ids_to_mark.length; i++) {
1712                                         var e = document.getElementById("RROW-" + ids_to_mark[i]);
1713                                         e.className = e.className.replace("Unread", "");
1714                                 }
1715
1716                                 var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
1717                                         param_escape(ids_to_mark.toString()) + "&cmode=0";
1718
1719                                 new Ajax.Request(query, {
1720                                         onComplete: function(transport) {
1721                                                 catchup_callback2(transport);
1722                                         } });
1723
1724                         }
1725                 }
1726
1727         } catch (e) {
1728                 exception_error("catchupRelativeToArticle", e);
1729         }
1730 }
1731
1732 function cdmExpandArticle(a_id) {
1733         try {
1734                 var id = 'CICD-' + a_id;
1735
1736                 try {
1737                         Element.hide("CEXC-" + a_id);
1738                 } catch (e) { }
1739
1740                 Effect.Appear(id, {duration : 0.5,
1741                         beforeStart: function(effect) {
1742                                 var h_id = 'CICH-' + a_id;
1743                                 var h_elem = document.getElementById(h_id);
1744                                 if (h_elem) { h_elem.style.display = "none"; }
1745
1746                                 toggleUnread(a_id, 0);
1747                         }});
1748
1749
1750         } catch (e) {
1751                 exception_error("appearBlockElementF", e);
1752         }
1753
1754 }
1755
1756 function fixHeadlinesOrder(ids) {
1757         try {
1758                 for (var i = 0; i < ids.length; i++) {
1759                         var e = document.getElementById("RROW-" + ids[i]);
1760
1761                         if (e) {
1762                                 if (i % 2 == 0) {
1763                                         e.className = e.className.replace("even", "odd");
1764                                 } else {
1765                                         e.className = e.className.replace("odd", "even");
1766                                 }
1767                         }
1768                 }
1769         } catch (e) {
1770                 exception_error("fixHeadlinesOrder", e);
1771         }
1772 }
1773
1774 function subtoolbarSearch() {
1775         try {
1776
1777                 var q = document.getElementById("subtoolbar_search_box");
1778
1779                 if (!q) return;
1780
1781                 q = q.value.toUpperCase();
1782
1783                 var ids = false;
1784                 var vis_ids = new Array();
1785
1786                 if (document.getElementById("headlinesList")) {
1787                         ids = getVisibleHeadlineIds();
1788                 } else {
1789                         ids = cdmGetVisibleArticles();
1790                 }
1791
1792                 for (var i = 0; i < ids.length; i++) {
1793                         var title = document.getElementById("RTITLE-" + ids[i]);
1794
1795                         if (title) {
1796                                 if (!title.innerHTML.toUpperCase().match(q)) {
1797                                         Element.hide(document.getElementById("RROW-" + ids[i]));
1798                                 } else {
1799                                         Element.show(document.getElementById("RROW-" + ids[i]));
1800                                         vis_ids.push(ids[i]);
1801                                 }
1802                         }
1803                 }
1804
1805                 fixHeadlinesOrder(vis_ids);
1806
1807         } catch (e) {
1808                 exception_error("subtoolbarSearch", e);
1809         }
1810 }
1811
1812 function hideReadHeadlines() {
1813         try {
1814
1815                 var ids = false;
1816                 var vis_ids = new Array();
1817
1818                 if (document.getElementById("headlinesList")) {
1819                         ids = getVisibleHeadlineIds();
1820                 } else {
1821                         ids = cdmGetVisibleArticles();
1822                 }
1823
1824                 var read_headlines_visible = true;
1825
1826                 for (var i = 0; i < ids.length; i++) {
1827                         var row = document.getElementById("RROW-" + ids[i]);
1828
1829                         if (row && row.className) {
1830                                 if (read_headlines_visible) {
1831                                         if (row.className.match("Unread") || row.className.match("Selected")) {
1832                                                 Element.show(row);
1833                                                 vis_ids.push(ids[i]);
1834                                         } else {
1835                                                 //Effect.Fade(row, {duration : 0.3});
1836                                                 Element.hide(row);
1837                                         }
1838                                 } else {
1839                                         Element.show(row);
1840                                         vis_ids.push(ids[i]);
1841                                 }
1842                         }
1843                 }
1844
1845                 fixHeadlinesOrder(vis_ids);
1846
1847                 read_headlines_visible = !read_headlines_visible;
1848
1849         } catch (e) {
1850                 exception_error("hideReadHeadlines", e);
1851         }
1852 }
1853
1854 function invertHeadlineSelection() {
1855         try {
1856                 var rows = new Array();
1857                 var r = false;
1858
1859                 if (!isCdmMode()) {
1860                         r = document.getElementsByTagName("TR");
1861                 } else {
1862                         r = document.getElementsByTagName("DIV");
1863                 }
1864
1865                 for (var i = 0; i < r.length; i++) {
1866                         if (r[i].id && r[i].id.match("RROW-")) {
1867                                 rows.push(r[i]);
1868                         }
1869                 }
1870
1871                 for (var i = 0; i < rows.length; i++) {
1872                         var nc = rows[i].className;
1873                         var id = rows[i].id.replace("RROW-", "");
1874                         var cb = document.getElementById("RCHK-" + id);
1875
1876                         if (!rows[i].className.match("Selected")) {
1877                                 nc = nc + "Selected";
1878                                 cb.checked = true;
1879                         } else {
1880                                 nc = nc.replace("Selected", "");
1881                                 cb.checked = false;
1882                         }
1883
1884                         rows[i].className = nc;
1885
1886                 }
1887
1888         } catch (e) {
1889                 exception_error("invertHeadlineSelection", e);
1890         }
1891 }
1892
1893 function getArticleUnderPointer() {
1894         return post_under_pointer;
1895 }
1896
1897 function zoomToArticle(id) {
1898         try {
1899                 var w = window.open("backend.php?op=view&mode=zoom&id=" + param_escape(id),
1900                         "ttrss_zoom_" + id,
1901                         "status=0,toolbar=0,location=0,width=450,height=300,scrollbars=1,menubar=0");
1902
1903         } catch (e) {
1904                 exception_error("zoomToArticle", e);
1905         }
1906 }
1907
1908 function showOriginalArticleInline(id) {
1909         try {
1910
1911                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1912
1913                 notify_progress("Loading, please wait...", true);
1914
1915                 new Ajax.Request(query, {
1916                         onComplete: function(transport) {
1917
1918                                 if (transport.responseXML) {
1919
1920                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1921                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1922
1923                                         notify("");
1924
1925                                         if (link && id) {
1926                                                 link = link.firstChild.nodeValue;
1927
1928                                                 var ci = document.getElementById("content-insert");
1929
1930                                                 var tmp = "<iframe id=\"inline_orig_article\" width=\""+ci.offsetWidth+"\" height=\""+ci.offsetHeight+"\" style=\"border-width : 0px;\" src=\""+link+"\"></iframe>";
1931
1932                                                 render_article(tmp);
1933
1934                                         }
1935                                 }
1936                         } });
1937
1938         } catch (e) {
1939                 exception_error("showOriginalArticleInline", e);
1940         }
1941 }
1942
1943
1944 function scrollArticle(offset) {
1945         try {
1946                 if (!isCdmMode()) {
1947                         var ci = document.getElementById("content-insert");
1948                         if (ci) {
1949                                 ci.scrollTop += offset;
1950                         }
1951                 } else {
1952                         var hi = document.getElementById("headlinesInnerContainer");
1953                         if (hi) {
1954                                 hi.scrollTop += offset;
1955                         }
1956
1957                 }
1958         } catch (e) {
1959                 exception_error("scrollArticle", e);
1960         }
1961 }