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, 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                 var is_cat = false;
  80                 var feed_id = false;
  81
  82                 if (transport.responseXML) {
  83                         var headlines = transport.responseXML.getElementsByTagName("headlines")[0];
  84                         if (headlines) {
  85                                 is_cat = headlines.getAttribute("is_cat");
  86                                 feed_id = headlines.getAttribute("id");
  87                                 setActiveFeedId(feed_id, is_cat);
  88                         }
  89                 }
  90
  91                 if (!is_cat) {
  92                         var feedr = document.getElementById("FEEDR-" + feed_id);
  93                         if (feedr && !feedr.className.match("Selected")) {
  94                                 feedr.className = feedr.className + "Selected";
  95                         }
  96                 } else {
  97                         var feedr = document.getElementById("FCAT-" + feed_id);
  98                         if (feedr && !feedr.className.match("Selected")) {
  99                                 feedr.className = feedr.className + "Selected";
 100                         }
 101                 }
 102
 103                 var f = document.getElementById("headlines-frame");
 104                 try {
 105                         if (feed_cur_page == 0) {
 106                                 debug("resetting headlines scrollTop");
 107                                 f.scrollTop = 0;
 108                         }
 109                 } catch (e) { };
 110
 111                 if (transport.responseXML) {
 112                         var headlines = transport.responseXML.getElementsByTagName("headlines")[0];
 113                         var headlines_count_obj = transport.responseXML.getElementsByTagName("headlines-count")[0];
 114                         var headlines_unread_obj = transport.responseXML.getElementsByTagName("headlines-unread")[0];
 115                         var disable_cache_obj = transport.responseXML.getElementsByTagName("disable-cache")[0];
 116
 117                         var vgroup_last_feed_obj =  transport.responseXML.getElementsByTagName("vgroup-last-feed")[0];
 118
 119                         var headlines_count = headlines_count_obj.getAttribute("value");
 120                         var headlines_unread = headlines_unread_obj.getAttribute("value");
 121                         var disable_cache = disable_cache_obj.getAttribute("value") != "0";
 122
 123                         vgroup_last_feed = vgroup_last_feed_obj.getAttribute("value");
 124
 125                         if (headlines_count == 0) {
 126                                 _infscroll_disable = 1;
 127                         } else {
 128                                 _infscroll_disable = 0;
 129                         }
 130
 131                         var counters = transport.responseXML.getElementsByTagName("counters")[0];
 132                         var articles = transport.responseXML.getElementsByTagName("article");
 133                         var runtime_info = transport.responseXML.getElementsByTagName("runtime-info");
 134
 135                         if (feed_cur_page == 0) {
 136                                 if (headlines) {
 137                                         f.innerHTML = headlines.firstChild.nodeValue;
 138
 139                                         var cache_prefix = "";
 140
 141                                         if (is_cat) {
 142                                                 cache_prefix = "C:";
 143                                         } else {
 144                                                 cache_prefix = "F:";
 145                                         }
 146
 147                                         cache_invalidate(cache_prefix + feed_id);
 148
 149                                         if (!disable_cache) {
 150                                                 cache_inject(cache_prefix + feed_id,
 151                                                         headlines.firstChild.nodeValue, headlines_unread);
 152                                         }
 153
 154                                 } else {
 155                                         debug("headlines_callback: returned no data");
 156                                 f.innerHTML = "<div class='whiteBox'>" + __('Could not update headlines (missing XML data)') + "</div>";
 157
 158                                 }
 159                         } else {
 160                                 if (headlines) {
 161                                         if (headlines_count > 0) {
 162                                                 debug("adding some more headlines...");
 163
 164                                                 var c = document.getElementById("headlinesList");
 165
 166                                                 if (!c) {
 167                                                         c = document.getElementById("headlinesInnerContainer");
 168                                                 }
 169
 170                                                 var ids = getSelectedArticleIds2();
 171
 172                                                 c.innerHTML = c.innerHTML + headlines.firstChild.nodeValue;
 173
 174                                                 debug("restore selected ids: " + ids);
 175
 176                                                 for (var i = 0; i < ids.length; i++) {
 177                                                         markHeadline(ids[i]);
 178                                                 }
 179
 180                                                 subtoolbarSearch();
 181
 182                                         } else {
 183                                                 debug("no new headlines received");
 184                                         }
 185                                 } else {
 186                                         debug("headlines_callback: returned no data");
 187                                         notify_error("Error while trying to load more headlines");
 188                                 }
 189
 190                         }
 191
 192                         if (articles) {
 193                                 for (var i = 0; i < articles.length; i++) {
 194                                         var a_id = articles[i].getAttribute("id");
 195                                         debug("found id: " + a_id);
 196                                         cache_inject(a_id, articles[i].firstChild.nodeValue);
 197                                 }
 198                         } else {
 199                                 debug("no cached articles received");
 200                         }
 201
 202                         if (counters) {
 203                                 debug("parsing piggybacked counters: " + counters);
 204                                 parse_counters(counters, false);
 205                         } else {
 206                                 debug("counters container not found in reply, requesting...");
 207                                 request_counters();
 208                         }
 209
 210                         if (runtime_info) {
 211                                 debug("parsing runtime info: " + runtime_info[0]);
 212                                 parse_runtime_info(runtime_info[0]);
 213                         } else {
 214                                 debug("counters container not found in reply");
 215                         }
 216
 217                 } else {
 218                         debug("headlines_callback: returned no XML object");
 219                         f.innerHTML = "<div class='whiteBox'>" + __('Could not update headlines (missing XML object)') + "</div>";
 220                 }
 221
 222                 if (typeof correctPNG != 'undefined') {
 223                         correctPNG();
 224                 }
 225
 226                 if (_cdm_wd_timeout) window.clearTimeout(_cdm_wd_timeout);
 227
 228                 if (!document.getElementById("headlinesList") &&
 229                                 getActiveFeedId() != -3 &&
 230                                 getInitParam("cdm_auto_catchup") == 1) {
 231                         debug("starting CDM watchdog");
 232                         _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 5000);
 233                         _cdm_wd_vishist = new Array();
 234                 } else {
 235                         debug("not in CDM mode or watchdog disabled");
 236                 }
 237
 238                 if (_tag_cdm_scroll) {
 239                         try {
 240                                 document.getElementById("headlinesInnerContainer").scrollTop = _tag_cdm_scroll;
 241                                 _tag_cdm_scroll = false;
 242                                 debug("resetting headlinesInner scrollTop");
 243
 244                         } catch (e) { }
 245                 }
 246
 247                 _feed_cur_page = feed_cur_page;
 248                 _infscroll_request_sent = 0;
 249
 250                 notify("");
 251
 252                 remove_splash();
 253
 254         } catch (e) {
 255                 exception_error("headlines_callback2", e);
 256         }
 257 }
 258
 259 function render_article(article) {
 260         try {
 261                 var f = document.getElementById("content-frame");
 262                 try {
 263                         f.scrollTop = 0;
 264                 } catch (e) { };
 265
 266                 var fi = document.getElementById("content-insert");
 267
 268                 try {
 269                         fi.scrollTop = 0;
 270                 } catch (e) { };
 271
 272                 fi.innerHTML = article;
 273
 274         } catch (e) {
 275                 exception_error("render_article", e);
 276         }
 277 }
 278
 279 function showArticleInHeadlines(id) {
 280
 281         try {
 282
 283                 cleanSelected("headlinesList");
 284
 285                 var crow = document.getElementById("RROW-" + id);
 286
 287                 if (!crow) return;
 288
 289                 var article_is_unread = crow.className.match("Unread");
 290
 291                 crow.className = crow.className.replace("Unread", "");
 292
 293                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
 294
 295                 var upd_img_pic = document.getElementById("FUPDPIC-" + id);
 296
 297                 var cache_prefix = "";
 298
 299                 if (activeFeedIsCat()) {
 300                         cache_prefix = "C:";
 301                 } else {
 302                         cache_prefix = "F:";
 303                 }
 304
 305                 var view_mode = false;
 306
 307                 try {
 308                         view_mode = document.forms['main_toolbar_form'].view_mode;
 309                         view_mode = view_mode[view_mode.selectedIndex].value;
 310                 } catch (e) {
 311                         exception_error("showArticleInHeadlines/viewmode", e, true);
 312                 }
 313
 314                 if (upd_img_pic && upd_img_pic.src.match("updated.png")) {
 315                         upd_img_pic.src = "images/blank_icon.gif";
 316
 317                         cache_invalidate(cache_prefix + getActiveFeedId());
 318
 319                         cache_inject(cache_prefix + getActiveFeedId(),
 320                                 document.getElementById("headlines-frame").innerHTML,
 321                                 get_feed_unread(getActiveFeedId()));
 322
 323                 } else if (article_is_unread && view_mode == "all_articles") {
 324
 325                         cache_invalidate(cache_prefix + getActiveFeedId());
 326
 327                         cache_inject(cache_prefix + getActiveFeedId(),
 328                                 document.getElementById("headlines-frame").innerHTML,
 329                                 get_feed_unread(getActiveFeedId())-1);
 330
 331                 } else if (article_is_unread) {
 332                         cache_invalidate(cache_prefix + getActiveFeedId());
 333                 }
 334
 335                 markHeadline(id);
 336
 337         } catch (e) {
 338                 exception_error("showArticleInHeadlines", e);
 339         }
 340 }
 341
 342 function article_callback2(transport, id, feed_id) {
 343         try {
 344                 debug("article_callback2 " + id);
 345
 346                 if (transport.responseXML) {
 347
 348                         debug("looking for articles to cache...");
 349
 350                         var articles = transport.responseXML.getElementsByTagName("article");
 351
 352                         for (var i = 0; i < articles.length; i++) {
 353                                 var a_id = articles[i].getAttribute("id");
 354
 355                                 debug("found id: " + a_id);
 356
 357                                 if (a_id == active_post_id) {
 358                                         debug("active article, rendering...");
 359                                         render_article(articles[i].firstChild.nodeValue);
 360                                 }
 361
 362                                 cache_inject(a_id, articles[i].firstChild.nodeValue);
 363                         }
 364
 365                         if (id != last_requested_article) {
 366                                 debug("requested article id is out of sequence, aborting");
 367                                 return;
 368                         }
 369
 370                         active_real_feed_id = feed_id;
 371                         active_post_id = id;
 372
 373                         showArticleInHeadlines(id);
 374
 375                         var reply = transport.responseXML.firstChild.firstChild;
 376
 377                 } else {
 378                         debug("article_callback: returned no XML object");
 379                         //var f = document.getElementById("content-frame");
 380                         //f.innerHTML = "<div class='whiteBox'>" + __('Could not display article (missing XML object)') + "</div>";
 381                 }
 382
 383                 var date = new Date();
 384                 last_article_view = date.getTime() / 1000;
 385
 386                 if (typeof correctPNG != 'undefined') {
 387                         correctPNG();
 388                 }
 389
 390                 if (_reload_feedlist_after_view) {
 391                         setTimeout('updateFeedList(false, false)', 50);
 392                         _reload_feedlist_after_view = false;
 393                 } else {
 394                         var counters = transport.responseXML.getElementsByTagName("counters")[0];
 395
 396                         if (counters) {
 397                                 debug("parsing piggybacked counters: " + counters);
 398                                 parse_counters(counters, false);
 399                         } else {
 400                                 debug("counters container not found in reply, requesting...");
 401                                 request_counters();
 402                         }
 403                 }
 404
 405                 notify("");
 406         } catch (e) {
 407                 exception_error("article_callback2", e);
 408         }
 409 }
 410
 411 function view(id, feed_id, skip_history) {
 412
 413         try {
 414                 debug("loading article: " + id + "/" + feed_id);
 415
 416                 var cached_article = cache_find(id);
 417
 418                 debug("cache check result: " + (cached_article != false));
 419
 420                 enableHotkeys();
 421
 422                 //setActiveFeedId(feed_id);
 423
 424                 var query = "backend.php?op=view&id=" + param_escape(id) +
 425                         "&feed=" + param_escape(feed_id);
 426
 427                 var date = new Date();
 428
 429                 var neighbor_ids = getRelativePostIds(active_post_id);
 430
 431                 /* only request uncached articles */
 432
 433                 var cids_to_request = Array();
 434
 435                 for (var i = 0; i < neighbor_ids.length; i++) {
 436                         if (!cache_check(neighbor_ids[i])) {
 437                                 cids_to_request.push(neighbor_ids[i]);
 438                         }
 439                 }
 440
 441                 debug("additional ids: " + cids_to_request.toString());
 442
 443                 /* additional info for piggyback counters */
 444
 445                 if (tagsAreDisplayed()) {
 446                         query = query + "&omode=lt";
 447                 } else {
 448                         query = query + "&omode=flc";
 449                 }
 450
 451                 var date = new Date();
 452                 var timestamp = Math.round(date.getTime() / 1000);
 453                 query = query + "&ts=" + timestamp;
 454
 455                 query = query + "&cids=" + cids_to_request.toString();
 456
 457                 var crow = document.getElementById("RROW-" + id);
 458                 var article_is_unread = crow.className.match("Unread");
 459
 460                 if (!async_counters_work) {
 461                         query = query + "&csync=true";
 462                 }
 463
 464                 showArticleInHeadlines(id);
 465
 466                 if (!cached_article) {
 467
 468                         notify_progress("Loading, please wait...", true);
 469
 470                 } else if (cached_article && article_is_unread) {
 471
 472                         query = query + "&mode=prefetch";
 473
 474                         render_article(cached_article);
 475
 476                 } else if (cached_article) {
 477
 478                         query = query + "&mode=prefetch_old";
 479                         render_article(cached_article);
 480
 481                 }
 482
 483                 cache_expire();
 484
 485                 last_requested_article = id;
 486
 487                 new Ajax.Request(query, {
 488                         onComplete: function(transport) {
 489                                 article_callback2(transport, id, feed_id);
 490                         } });
 491
 492                 return false;
 493
 494         } catch (e) {
 495                 exception_error("view", e);
 496         }
 497 }
 498
 499 function tMark(id) {
 500         return toggleMark(id);
 501 }
 502
 503 function tPub(id) {
 504         return togglePub(id);
 505 }
 506
 507 function tMark_afh_off(effect) {
 508         try {
 509                 var elem = effect.effects[0].element;
 510
 511                 debug("tMark_afh_off : " + elem.id);
 512
 513                 if (elem) {
 514                         elem.src = elem.src.replace("mark_set", "mark_unset");
 515                         elem.alt = __("Star article");
 516                         Element.show(elem);
 517                 }
 518
 519         } catch (e) {
 520                 exception_error("tMark_afh_off", e);
 521         }
 522 }
 523
 524 function tPub_afh_off(effect) {
 525         try {
 526                 var elem = effect.effects[0].element;
 527
 528                 debug("tPub_afh_off : " + elem.id);
 529
 530                 if (elem) {
 531                         elem.src = elem.src.replace("pub_set", "pub_unset");
 532                         elem.alt = __("Publish article");
 533                         Element.show(elem);
 534                 }
 535
 536         } catch (e) {
 537                 exception_error("tPub_afh_off", e);
 538         }
 539 }
 540
 541 function toggleMark(id, client_only, no_effects) {
 542
 543         try {
 544
 545                 var query = "backend.php?op=rpc&id=" + id + "&subop=mark";
 546
 547                 query = query + "&afid=" + getActiveFeedId();
 548
 549                 if (tagsAreDisplayed()) {
 550                         query = query + "&omode=tl";
 551                 } else {
 552                         query = query + "&omode=flc";
 553                 }
 554
 555                 var mark_img = document.getElementById("FMPIC-" + id);
 556                 var vfeedu = document.getElementById("FEEDU--1");
 557                 var crow = document.getElementById("RROW-" + id);
 558
 559                 if (mark_img.src.match("mark_unset")) {
 560                         mark_img.src = mark_img.src.replace("mark_unset", "mark_set");
 561                         mark_img.alt = __("Unstar article");
 562                         query = query + "&mark=1";
 563
 564                 } else {
 565                         //mark_img.src = "images/mark_unset.png";
 566                         mark_img.alt = __("Please wait...");
 567                         query = query + "&mark=0";
 568
 569                         if (document.getElementById("headlinesList") && !no_effects) {
 570                                 Effect.Puff(mark_img, {duration : 0.25, afterFinish: tMark_afh_off});
 571                         } else {
 572                                 mark_img.src = mark_img.src.replace("mark_set", "mark_unset");
 573                                 mark_img.alt = __("Star article");
 574                         }
 575                 }
 576
 577                 if (!client_only) {
 578                         debug(query);
 579
 580                         new Ajax.Request(query, {
 581                                 onComplete: function(transport) {
 582                                         all_counters_callback2(transport);
 583                                 } });
 584
 585                 }
 586
 587         } catch (e) {
 588                 exception_error("toggleMark", e);
 589         }
 590 }
 591
 592 function togglePub(id, client_only, no_effects) {
 593
 594         try {
 595
 596                 var query = "backend.php?op=rpc&id=" + id + "&subop=publ";
 597
 598                 query = query + "&afid=" + getActiveFeedId();
 599
 600                 if (tagsAreDisplayed()) {
 601                         query = query + "&omode=tl";
 602                 } else {
 603                         query = query + "&omode=flc";
 604                 }
 605
 606                 var mark_img = document.getElementById("FPPIC-" + id);
 607                 var vfeedu = document.getElementById("FEEDU--2");
 608                 var crow = document.getElementById("RROW-" + id);
 609
 610                 if (mark_img.src.match("pub_unset")) {
 611                         mark_img.src = mark_img.src.replace("pub_unset", "pub_set");
 612                         mark_img.alt = __("Unpublish article");
 613                         query = query + "&pub=1";
 614
 615
 616                 } else {
 617                         //mark_img.src = "images/pub_unset.png";
 618                         mark_img.alt = __("Please wait...");
 619                         query = query + "&pub=0";
 620
 621                         if (document.getElementById("headlinesList") && !no_effects) {
 622                                 Effect.Puff(mark_img, {duration : 0.25, afterFinish: tPub_afh_off});
 623                         } else {
 624                                 mark_img.src = mark_img.src.replace("pub_set", "pub_unset");
 625                                 mark_img.alt = __("Publish article");
 626                         }
 627                 }
 628
 629                 if (!client_only) {
 630                         new Ajax.Request(query, {
 631                                 onComplete: function(transport) {
 632                                         all_counters_callback2(transport);
 633                                 } });
 634                 }
 635
 636         } catch (e) {
 637
 638                 exception_error("togglePub", e);
 639         }
 640 }
 641
 642 function correctHeadlinesOffset(id) {
 643
 644         try {
 645
 646                 var hlist = document.getElementById("headlinesList");
 647                 var container = document.getElementById("headlinesInnerContainer");
 648                 var row = document.getElementById("RROW-" + id);
 649
 650                 var viewport = container.offsetHeight;
 651
 652                 var rel_offset_top = row.offsetTop - container.scrollTop;
 653                 var rel_offset_bottom = row.offsetTop + row.offsetHeight - container.scrollTop;
 654
 655                 debug("Rtop: " + rel_offset_top + " Rbtm: " + rel_offset_bottom);
 656                 debug("Vport: " + viewport);
 657
 658                 if (rel_offset_top <= 0 || rel_offset_top > viewport) {
 659                         container.scrollTop = row.offsetTop;
 660                 } else if (rel_offset_bottom > viewport) {
 661
 662                         /* doesn't properly work with Opera in some cases because
 663                                 Opera fucks up element scrolling */
 664
 665                         container.scrollTop = row.offsetTop + row.offsetHeight - viewport;
 666                 }
 667
 668         } catch (e) {
 669                 exception_error("correctHeadlinesOffset", e);
 670         }
 671
 672 }
 673
 674 function moveToPost(mode) {
 675
 676         try {
 677
 678                 var rows;
 679
 680                 if (isCdmMode()) {
 681                         rows = cdmGetVisibleArticles();
 682                 } else {
 683                         rows = getVisibleHeadlineIds();
 684                 }
 685
 686                 var prev_id = false;
 687                 var next_id = false;
 688
 689                 if (!document.getElementById('RROW-' + active_post_id)) {
 690                         active_post_id = false;
 691                 }
 692
 693                 if (active_post_id == false) {
 694                         next_id = getFirstVisibleHeadlineId();
 695                         prev_id = getLastVisibleHeadlineId();
 696                 } else {
 697                         for (var i = 0; i < rows.length; i++) {
 698                                 if (rows[i] == active_post_id) {
 699                                         prev_id = rows[i-1];
 700                                         next_id = rows[i+1];
 701                                 }
 702                         }
 703                 }
 704
 705                 if (mode == "next") {
 706                         if (next_id) {
 707                                 if (isCdmMode()) {
 708
 709                                         if (!cdmArticleIsActuallyVisible(next_id)) {
 710                                                 cdmScrollToArticleId(next_id);
 711                                         }
 712                                         cdmSelectArticles("none");
 713                                         toggleUnread(next_id, 0, true);
 714                                         toggleSelected(next_id);
 715
 716                                 } else {
 717                                         correctHeadlinesOffset(next_id);
 718                                         view(next_id, getActiveFeedId());
 719                                 }
 720                         }
 721                 }
 722
 723                 if (mode == "prev") {
 724                         if (prev_id) {
 725                                 if (isCdmMode()) {
 726                                         cdmScrollToArticleId(prev_id);
 727                                         cdmSelectArticles("none");
 728                                         toggleUnread(prev_id, 0, true);
 729                                         toggleSelected(prev_id);
 730                                 } else {
 731                                         correctHeadlinesOffset(prev_id);
 732                                         view(prev_id, getActiveFeedId());
 733                                 }
 734                         }
 735                 }
 736
 737         } catch (e) {
 738                 exception_error("moveToPost", e);
 739         }
 740 }
 741
 742 function toggleSelected(id) {
 743         try {
 744
 745                 var cb = document.getElementById("RCHK-" + id);
 746
 747                 var row = document.getElementById("RROW-" + id);
 748                 if (row) {
 749                         var nc = row.className;
 750
 751                         if (!nc.match("Selected")) {
 752                                 nc = nc + "Selected";
 753                                 if (cb) {
 754                                         cb.checked = true;
 755                                 }
 756
 757                                 // In CDM basically last selected article == active article
 758                                 if (isCdmMode()) active_post_id = id;
 759                         } else {
 760                                 nc = nc.replace("Selected", "");
 761                                 if (cb) {
 762                                         cb.checked = false;
 763                                 }
 764
 765                         }
 766
 767                         row.className = nc;
 768                 }
 769         } catch (e) {
 770                 exception_error("toggleSelected", e);
 771         }
 772 }
 773
 774 function toggleUnread_afh(effect) {
 775         try {
 776
 777                 var elem = effect.element;
 778                 elem.style.backgroundColor = "";
 779
 780         } catch (e) {
 781                 exception_error("toggleUnread_afh", e);
 782         }
 783 }
 784
 785 function toggleUnread(id, cmode, effect) {
 786         try {
 787
 788                 var row = document.getElementById("RROW-" + id);
 789                 if (row) {
 790                         var nc = row.className;
 791                         var is_selected = row.className.match("Selected");
 792                         nc = nc.replace("Unread", "");
 793                         nc = nc.replace("Selected", "");
 794
 795                         // since we are removing selection from the object, uncheck
 796                         // corresponding checkbox
 797
 798                         var cb = document.getElementById("RCHK-" + id);
 799                         if (cb) {
 800                                 cb.checked = false;
 801                         }
 802
 803                         // NOTE: I'm not sure that resetting selection here is a feature -fox
 804
 805                         if (cmode == undefined || cmode == 2) {
 806                                 if (row.className.match("Unread")) {
 807                                         row.className = nc;
 808
 809                                         if (effect) {
 810                                                 new Effect.Highlight(row, {duration: 1, startcolor: "#fff7d5",
 811                                                         afterFinish: toggleUnread_afh,
 812                                                         queue: { position:'end', scope: 'TMRQ-' + id, limit: 1 } } );
 813                                         }
 814
 815                                 } else {
 816                                         row.className = nc + "Unread";
 817                                 }
 818                         } else if (cmode == 0) {
 819                                 row.className = nc;
 820
 821                                 if (effect) {
 822                                         new Effect.Highlight(row, {duration: 1, startcolor: "#fff7d5",
 823                                                 afterFinish: toggleUnread_afh,
 824                                                 queue: { position:'end', scope: 'TMRQ-' + id, limit: 1 } } );
 825                                 }
 826                         } else if (cmode == 1) {
 827                                 row.className = nc + "Unread";
 828                         }
 829
 830                         // Disable unmarking as selected for the time being (16.05.08) -fox
 831                         if (is_selected) row.className = row.className + "Selected";
 832
 833                         if (cmode == undefined) cmode = 2;
 834
 835                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 836                                 param_escape(id) + "&cmode=" + param_escape(cmode);
 837
 838 //                      notify_progress("Loading, please wait...");
 839
 840                         new Ajax.Request(query, {
 841                                 onComplete: function(transport) {
 842                                         all_counters_callback2(transport);
 843                                 } });
 844
 845                 }
 846
 847
 848         } catch (e) {
 849                 exception_error("toggleUnread", e);
 850         }
 851 }
 852
 853 function selectionRemoveLabel(id) {
 854         try {
 855
 856                 var ids = getSelectedArticleIds2();
 857
 858                 if (ids.length == 0) {
 859                         alert(__("No articles are selected."));
 860                         return;
 861                 }
 862
 863                 var ok = confirm(__("Remove selected articles from label?"));
 864
 865                 if (ok) {
 866
 867                         var query = "backend.php?op=rpc&subop=removeFromLabel&ids=" +
 868                                 param_escape(ids.toString()) + "&lid=" + param_escape(id);
 869
 870 //                      notify_progress("Loading, please wait...");
 871
 872                         new Ajax.Request(query, {
 873                                 onComplete: function(transport) {
 874                                         viewCurrentFeed();
 875                                 } });
 876
 877                 }
 878
 879         } catch (e) {
 880                 exception_error("selectionAssignLabel", e);
 881
 882         }
 883 }
 884
 885 function selectionAssignLabel(id) {
 886         try {
 887
 888                 var ids = getSelectedArticleIds2();
 889
 890                 if (ids.length == 0) {
 891                         alert(__("No articles are selected."));
 892                         return;
 893                 }
 894
 895                 var ok = confirm(__("Assign selected articles to label?"));
 896
 897                 if (ok) {
 898
 899                         var query = "backend.php?op=rpc&subop=assignToLabel&ids=" +
 900                                 param_escape(ids.toString()) + "&lid=" + param_escape(id);
 901
 902 //                      notify_progress("Loading, please wait...");
 903
 904                         new Ajax.Request(query, {
 905                                 onComplete: function(transport) {
 906                                         all_counters_callback2(transport);
 907                                 } });
 908
 909                 }
 910
 911         } catch (e) {
 912                 exception_error("selectionAssignLabel", e);
 913
 914         }
 915 }
 916
 917 function selectionToggleUnread(cdm_mode, set_state, callback_func, no_error) {
 918         try {
 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 && !no_error) {
 928                         alert(__("No articles are selected."));
 929                         return;
 930                 }
 931
 932                 for (i = 0; i < rows.length; i++) {
 933                         var row = document.getElementById("RROW-" + rows[i]);
 934                         if (row) {
 935                                 var nc = row.className;
 936                                 nc = nc.replace("Unread", "");
 937                                 nc = nc.replace("Selected", "");
 938
 939                                 if (set_state == undefined) {
 940                                         if (row.className.match("Unread")) {
 941                                                 row.className = nc + "Selected";
 942                                         } else {
 943                                                 row.className = nc + "UnreadSelected";
 944                                         }
 945                                 }
 946
 947                                 if (set_state == false) {
 948                                         row.className = nc + "Selected";
 949                                 }
 950
 951                                 if (set_state == true) {
 952                                         row.className = nc + "UnreadSelected";
 953                                 }
 954                         }
 955                 }
 956
 957                 if (rows.length > 0) {
 958
 959                         var cmode = "";
 960
 961                         if (set_state == undefined) {
 962                                 cmode = "2";
 963                         } else if (set_state == true) {
 964                                 cmode = "1";
 965                         } else if (set_state == false) {
 966                                 cmode = "0";
 967                         }
 968
 969                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 970                                 param_escape(rows.toString()) + "&cmode=" + cmode;
 971
 972                         notify_progress("Loading, please wait...");
 973
 974                         new Ajax.Request(query, {
 975                                 onComplete: function(transport) {
 976                                         catchup_callback2(transport, callback_func);
 977                                 } });
 978
 979                 }
 980
 981         } catch (e) {
 982                 exception_error("selectionToggleUnread", e);
 983         }
 984 }
 985
 986 function selectionToggleMarked(cdm_mode) {
 987         try {
 988
 989                 var rows;
 990
 991                 if (cdm_mode) {
 992                         rows = cdmGetSelectedArticles();
 993                 } else {
 994                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 995                 }
 996
 997                 if (rows.length == 0) {
 998                         alert(__("No articles are selected."));
 999                         return;
1000                 }
1001
1002                 for (i = 0; i < rows.length; i++) {
1003                         toggleMark(rows[i], true, true);
1004                 }
1005
1006                 if (rows.length > 0) {
1007
1008                         var query = "backend.php?op=rpc&subop=markSelected&ids=" +
1009                                 param_escape(rows.toString()) + "&cmode=2";
1010
1011                         query = query + "&afid=" + getActiveFeedId();
1012
1013 /*                      if (tagsAreDisplayed()) {
1014                                 query = query + "&omode=tl";
1015                         } else {
1016                                 query = query + "&omode=flc";
1017                         } */
1018
1019                         query = query + "&omode=lc";
1020
1021                         new Ajax.Request(query, {
1022                                 onComplete: function(transport) {
1023                                         all_counters_callback2(transport);
1024                                 } });
1025
1026                 }
1027
1028         } catch (e) {
1029                 exception_error("selectionToggleMarked", e);
1030         }
1031 }
1032
1033 function selectionTogglePublished(cdm_mode) {
1034         try {
1035
1036                 var rows;
1037
1038                 if (cdm_mode) {
1039                         rows = cdmGetSelectedArticles();
1040                 } else {
1041                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1042                 }
1043
1044                 if (rows.length == 0) {
1045                         alert(__("No articles are selected."));
1046                         return;
1047                 }
1048
1049                 for (i = 0; i < rows.length; i++) {
1050                         togglePub(rows[i], true, true);
1051                 }
1052
1053                 if (rows.length > 0) {
1054
1055                         var query = "backend.php?op=rpc&subop=publishSelected&ids=" +
1056                                 param_escape(rows.toString()) + "&cmode=2";
1057
1058                         query = query + "&afid=" + getActiveFeedId();
1059
1060 /*                      if (tagsAreDisplayed()) {
1061                                 query = query + "&omode=tl";
1062                         } else {
1063                                 query = query + "&omode=flc";
1064                         } */
1065
1066                         query = query + "&omode=lc";
1067
1068                         new Ajax.Request(query, {
1069                                 onComplete: function(transport) {
1070                                         all_counters_callback2(transport);
1071                                 } });
1072
1073                 }
1074
1075         } catch (e) {
1076                 exception_error("selectionToggleMarked", e);
1077         }
1078 }
1079
1080 function cdmGetSelectedArticles() {
1081         var sel_articles = new Array();
1082         var container = document.getElementById("headlinesInnerContainer");
1083
1084         for (i = 0; i < container.childNodes.length; i++) {
1085                 var child = container.childNodes[i];
1086
1087                 if (child.id && child.id.match("RROW-") && child.className.match("Selected")) {
1088                         var c_id = child.id.replace("RROW-", "");
1089                         sel_articles.push(c_id);
1090                 }
1091         }
1092
1093         return sel_articles;
1094 }
1095
1096 function cdmGetVisibleArticles() {
1097         var sel_articles = new Array();
1098         var container = document.getElementById("headlinesInnerContainer");
1099
1100         if (!container) return sel_articles;
1101
1102         for (i = 0; i < container.childNodes.length; i++) {
1103                 var child = container.childNodes[i];
1104
1105                 if (child.id && child.id.match("RROW-")) {
1106                         var c_id = child.id.replace("RROW-", "");
1107                         sel_articles.push(c_id);
1108                 }
1109         }
1110
1111         return sel_articles;
1112 }
1113
1114 function cdmGetUnreadArticles() {
1115         var sel_articles = new Array();
1116         var container = document.getElementById("headlinesInnerContainer");
1117
1118         for (i = 0; i < container.childNodes.length; i++) {
1119                 var child = container.childNodes[i];
1120
1121                 if (child.id && child.id.match("RROW-") && child.className.match("Unread")) {
1122                         var c_id = child.id.replace("RROW-", "");
1123                         sel_articles.push(c_id);
1124                 }
1125         }
1126
1127         return sel_articles;
1128 }
1129
1130
1131 // mode = all,none,unread
1132 function cdmSelectArticles(mode) {
1133         var container = document.getElementById("headlinesInnerContainer");
1134
1135         for (i = 0; i < container.childNodes.length; i++) {
1136                 var child = container.childNodes[i];
1137
1138                 if (child.id && child.id.match("RROW-")) {
1139                         var aid = child.id.replace("RROW-", "");
1140
1141                         var cb = document.getElementById("RCHK-" + aid);
1142
1143                         if (mode == "all") {
1144                                 if (!child.className.match("Selected")) {
1145                                         child.className = child.className + "Selected";
1146                                         cb.checked = true;
1147                                 }
1148                         } else if (mode == "unread") {
1149                                 if (child.className.match("Unread") && !child.className.match("Selected")) {
1150                                         child.className = child.className + "Selected";
1151                                         cb.checked = true;
1152                                 }
1153                         } else {
1154                                 child.className = child.className.replace("Selected", "");
1155                                 cb.checked = false;
1156                         }
1157                 }
1158         }
1159 }
1160
1161 function catchupPage() {
1162
1163         var fn = getFeedName(getActiveFeedId(), activeFeedIsCat());
1164
1165         var str = __("Mark all visible articles in %s as read?");
1166
1167         str = str.replace("%s", fn);
1168
1169         if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
1170                 return;
1171         }
1172
1173         if (document.getElementById("headlinesList")) {
1174                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true);
1175                 selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
1176                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
1177         } else {
1178                 cdmSelectArticles('all');
1179                 selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
1180                 cdmSelectArticles('none');
1181         }
1182 }
1183
1184 function catchupSelection() {
1185
1186         try {
1187
1188                 var rows;
1189
1190                 if (document.getElementById("headlinesList")) {
1191                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1192                 } else {
1193                         rows = cdmGetSelectedArticles();
1194                 }
1195
1196                 if (rows.length == 0) {
1197                         alert(__("No articles are selected."));
1198                         return;
1199                 }
1200
1201
1202                 var fn = getFeedName(getActiveFeedId(), activeFeedIsCat());
1203
1204                 var str = __("Mark %d selected articles in %s as read?");
1205
1206                 str = str.replace("%d", rows.length);
1207                 str = str.replace("%s", fn);
1208
1209                 if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
1210                         return;
1211                 }
1212
1213                 if (document.getElementById("headlinesList")) {
1214                         selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
1215         //              selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
1216                 } else {
1217                         selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
1218         //              cdmSelectArticles('none');
1219                 }
1220
1221         } catch (e) {
1222                 exception_error("catchupSelection", e);
1223         }
1224 }
1225
1226 function editArticleTags(id, feed_id, cdm_enabled) {
1227         _tag_active_post_id = id;
1228         _tag_active_feed_id = feed_id;
1229         _tag_active_cdm = cdm_enabled;
1230
1231         cache_invalidate(id);
1232
1233         try {
1234                 _tag_cdm_scroll = document.getElementById("headlinesInnerContainer").scrollTop;
1235         } catch (e) { }
1236         displayDlg('editArticleTags', id);
1237 }
1238
1239
1240 function tag_saved_callback(transport) {
1241         try {
1242                 debug("in tag_saved_callback");
1243
1244                 closeInfoBox();
1245                 notify("");
1246
1247                 if (tagsAreDisplayed()) {
1248                         _reload_feedlist_after_view = true;
1249                 }
1250
1251                 if (!_tag_active_cdm) {
1252                         if (active_post_id == _tag_active_post_id) {
1253                                 debug("reloading current article");
1254                                 view(_tag_active_post_id, _tag_active_feed_id);
1255                         }
1256                 } else {
1257                         debug("reloading current feed");
1258                         viewCurrentFeed();
1259                 }
1260
1261         } catch (e) {
1262                 exception_error("catchup_callback", e);
1263         }
1264 }
1265
1266 function editTagsSave() {
1267
1268         notify_progress("Saving article tags...");
1269
1270         var form = document.forms["tag_edit_form"];
1271
1272         var query = Form.serialize("tag_edit_form");
1273
1274         query = "backend.php?op=rpc&subop=setArticleTags&" + query;
1275
1276         debug(query);
1277
1278         new Ajax.Request(query, {
1279                 onComplete: function(transport) {
1280                                 tag_saved_callback(transport);
1281                         } });
1282
1283 }
1284
1285 function editTagsInsert() {
1286         try {
1287
1288                 var form = document.forms["tag_edit_form"];
1289
1290                 var found_tags = form.found_tags;
1291                 var tags_str = form.tags_str;
1292
1293                 var tag = found_tags[found_tags.selectedIndex].value;
1294
1295                 if (tags_str.value.length > 0 &&
1296                                 tags_str.value.lastIndexOf(", ") != tags_str.value.length - 2) {
1297
1298                         tags_str.value = tags_str.value + ", ";
1299                 }
1300
1301                 tags_str.value = tags_str.value + tag + ", ";
1302
1303                 found_tags.selectedIndex = 0;
1304
1305         } catch (e) {
1306                 exception_error("editTagsInsert", e);
1307         }
1308 }
1309
1310 function cdmScrollViewport(where) {
1311         debug("cdmScrollViewport: " + where);
1312
1313         var ctr = document.getElementById("headlinesInnerContainer");
1314
1315         if (!ctr) return;
1316
1317         if (where == "bottom") {
1318                 ctr.scrollTop = ctr.scrollHeight;
1319         } else {
1320                 ctr.scrollTop = where;
1321         }
1322 }
1323
1324 function cdmArticleIsBelowViewport(id) {
1325         try {
1326                 var ctr = document.getElementById("headlinesInnerContainer");
1327                 var e = document.getElementById("RROW-" + id);
1328
1329                 if (!e || !ctr) return;
1330
1331                 // article starts below viewport
1332
1333                 if (ctr.scrollTop < e.offsetTop) {
1334                         return true;
1335                 } else {
1336                         return false;
1337                 }
1338
1339         } catch (e) {
1340                 exception_error("cdmArticleIsVisible", e);
1341         }
1342 }
1343
1344 function cdmArticleIsAboveViewport(id) {
1345         try {
1346                 var ctr = document.getElementById("headlinesInnerContainer");
1347                 var e = document.getElementById("RROW-" + id);
1348
1349                 if (!e || !ctr) return;
1350
1351                 // article starts above viewport
1352
1353                 if (ctr.scrollTop > e.offsetTop + e.offsetHeight) {
1354                         return true;
1355                 } else {
1356                         return false;
1357                 }
1358
1359         } catch (e) {
1360                 exception_error("cdmArticleIsVisible", e);
1361         }
1362 }
1363
1364 function cdmScrollToArticleId(id) {
1365         try {
1366                 var ctr = document.getElementById("headlinesInnerContainer");
1367                 var e = document.getElementById("RROW-" + id);
1368
1369                 if (!e || !ctr) return;
1370
1371                 ctr.scrollTop = e.offsetTop;
1372
1373         } catch (e) {
1374                 exception_error("cdmScrollToArticleId", e);
1375         }
1376 }
1377
1378 function cdmArticleIsActuallyVisible(id) {
1379         try {
1380                 var ctr = document.getElementById("headlinesInnerContainer");
1381                 var e = document.getElementById("RROW-" + id);
1382
1383                 if (!e || !ctr) return;
1384
1385                 // article fits in viewport OR article is longer than viewport and
1386                 // its bottom is visible
1387
1388                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
1389                                 ctr.scrollTop + ctr.offsetHeight) {
1390
1391                         return true;
1392
1393                 } else if (e.offsetHeight > ctr.offsetHeight &&
1394                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1395                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
1396
1397                         return true;
1398
1399                 }
1400
1401                 return false;
1402
1403         } catch (e) {
1404                 exception_error("cdmArticleIsVisible", e);
1405         }
1406 }
1407
1408 function cdmWatchdog() {
1409
1410         try {
1411
1412                 var ctr = document.getElementById("headlinesInnerContainer");
1413
1414                 if (!ctr) return;
1415
1416                 var ids = new Array();
1417
1418                 var e = ctr.firstChild;
1419
1420                 while (e) {
1421                         if (e.className && e.className == "cdmArticleUnread" && e.id &&
1422                                         e.id.match("RROW-")) {
1423
1424                                 // article fits in viewport OR article is longer than viewport and
1425                                 // its bottom is visible
1426
1427                                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
1428                                                 ctr.scrollTop + ctr.offsetHeight) {
1429
1430 //                                      debug(e.id + " is visible " + e.offsetTop + "." +
1431 //                                              (e.offsetTop + e.offsetHeight) + " vs " + ctr.scrollTop + "." +
1432 //                                              (ctr.scrollTop + ctr.offsetHeight));
1433
1434                                         ids.push(e.id.replace("RROW-", ""));
1435
1436                                 } else if (e.offsetHeight > ctr.offsetHeight &&
1437                                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1438                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
1439
1440                                         ids.push(e.id.replace("RROW-", ""));
1441
1442                                 }
1443
1444                                 // method 2: article bottom is visible and is in upper 1/2 of the viewport
1445
1446 /*                              if (e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1447                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight/2) {
1448
1449                                         ids.push(e.id.replace("RROW-", ""));
1450
1451                                 } */
1452
1453                         }
1454
1455                         e = e.nextSibling;
1456                 }
1457
1458                 debug("cdmWatchdog, ids= " + ids.toString());
1459
1460                 if (ids.length > 0) {
1461
1462                         for (var i = 0; i < ids.length; i++) {
1463                                 var e = document.getElementById("RROW-" + ids[i]);
1464                                 if (e) {
1465                                         e.className = e.className.replace("Unread", "");
1466                                 }
1467                         }
1468
1469                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
1470                                 param_escape(ids.toString()) + "&cmode=0";
1471
1472                         new Ajax.Request(query, {
1473                                 onComplete: function(transport) {
1474                                         all_counters_callback2(transport);
1475                                 } });
1476
1477                 }
1478
1479                 _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 4000);
1480
1481         } catch (e) {
1482                 exception_error("cdmWatchdog", e);
1483         }
1484
1485 }
1486
1487
1488 function cache_inject(id, article, param) {
1489         if (!cache_check_param(id, param)) {
1490                 debug("cache_article: miss: " + id + " [p=" + param + "]");
1491
1492                 var cache_obj = new Array();
1493
1494                 cache_obj["id"] = id;
1495                 cache_obj["data"] = article;
1496                 cache_obj["param"] = param;
1497
1498                 article_cache.push(cache_obj);
1499
1500         } else {
1501                 debug("cache_article: hit: " + id + " [p=" + param + "]");
1502         }
1503 }
1504
1505 function cache_find(id) {
1506         for (var i = 0; i < article_cache.length; i++) {
1507                 if (article_cache[i]["id"] == id) {
1508                         return article_cache[i]["data"];
1509                 }
1510         }
1511         return false;
1512 }
1513
1514 function cache_find_param(id, param) {
1515         for (var i = 0; i < article_cache.length; i++) {
1516                 if (article_cache[i]["id"] == id && article_cache[i]["param"] == param) {
1517                         return article_cache[i]["data"];
1518                 }
1519         }
1520         return false;
1521 }
1522
1523 function cache_check(id) {
1524         for (var i = 0; i < article_cache.length; i++) {
1525                 if (article_cache[i]["id"] == id) {
1526                         return true;
1527                 }
1528         }
1529         return false;
1530 }
1531
1532 function cache_check_param(id, param) {
1533         for (var i = 0; i < article_cache.length; i++) {
1534
1535 //              debug("cache_check_param " + article_cache[i]["id"] + ":" +
1536 //                      article_cache[i]["param"] + " vs " + id + ":" + param);
1537
1538                 if (article_cache[i]["id"] == id && article_cache[i]["param"] == param) {
1539                         return true;
1540                 }
1541         }
1542         return false;
1543 }
1544
1545 function cache_expire() {
1546         while (article_cache.length > 25) {
1547                 article_cache.shift();
1548         }
1549 }
1550
1551 function cache_empty() {
1552         article_cache = new Array();
1553 }
1554
1555 function cache_invalidate(id) {
1556         var i = 0
1557
1558         try {
1559
1560                 while (i < article_cache.length) {
1561                         if (article_cache[i]["id"] == id) {
1562                                 debug("cache_invalidate: removed id " + id);
1563                                 article_cache.splice(i, 1);
1564                                 return true;
1565                         }
1566                         i++;
1567                 }
1568                 debug("cache_invalidate: id not found: " + id);
1569                 return false;
1570         } catch (e) {
1571                 exception_error("cache_invalidate", e);
1572         }
1573 }
1574
1575 function getActiveArticleId() {
1576         return active_post_id;
1577 }
1578
1579 function cdmClicked(id) {
1580         try {
1581                 var elem = document.getElementById("RROW-" + id);
1582
1583                 if (elem) {
1584                         var id = elem.id.replace("RROW-", "");
1585                         active_post_id = id;
1586
1587                         cdmSelectArticles("none");
1588                         toggleUnread(id, 0, true);
1589                         toggleSelected(id);
1590
1591                 }
1592         } catch (e) {
1593                 exception_error("cdmClicked", e);
1594         }
1595 }
1596
1597 function preload_article_callback(transport) {
1598         try {
1599                 if (transport.responseXML) {
1600                         var articles = transport.responseXML.getElementsByTagName("article");
1601
1602                         for (var i = 0; i < articles.length; i++) {
1603                                 var id = articles[i].getAttribute("id");
1604                                 if (!cache_check(id)) {
1605                                         cache_inject(id, articles[i].firstChild.nodeValue);
1606                                         debug("preloaded article: " + id);
1607                                 }
1608                         }
1609                 }
1610         } catch (e) {
1611                 exception_error("preload_article_callback", e);
1612         }
1613 }
1614
1615 function preloadArticleUnderPointer(id) {
1616         try {
1617                 if (getInitParam("bw_limit") == "1") return;
1618
1619                 if (post_under_pointer == id && !cache_check(id)) {
1620
1621                         debug("trying to preload article " + id);
1622
1623                         var neighbor_ids = getRelativePostIds(id, 1);
1624
1625                         /* only request uncached articles */
1626
1627                         var cids_to_request = Array();
1628
1629                         for (var i = 0; i < neighbor_ids.length; i++) {
1630                                 if (!cache_check(neighbor_ids[i])) {
1631                                         cids_to_request.push(neighbor_ids[i]);
1632                                 }
1633                         }
1634                         debug("additional ids: " + cids_to_request.toString());
1635
1636                         cids_to_request.push(id);
1637
1638                         var query = "backend.php?op=rpc&subop=getArticles&ids=" +
1639                                 cids_to_request.toString();
1640                         new Ajax.Request(query, {
1641                                 onComplete: function(transport) {
1642                                         preload_article_callback(transport);
1643                         } });
1644                 }
1645         } catch (e) {
1646                 exception_error("preloadArticleUnderPointer", e);
1647         }
1648 }
1649
1650 function postMouseIn(id) {
1651         try {
1652                 if (post_under_pointer != id) {
1653                         post_under_pointer = id;
1654                         if (!isCdmMode()) {
1655                                 window.setTimeout("preloadArticleUnderPointer(" + id + ")", 250);
1656                         }
1657                 }
1658
1659         } catch (e) {
1660                 exception_error("postMouseIn", e);
1661         }
1662 }
1663
1664 function postMouseOut(id) {
1665         try {
1666                 post_under_pointer = false;
1667         } catch (e) {
1668                 exception_error("postMouseOut", e);
1669         }
1670 }
1671
1672 function headlines_scroll_handler() {
1673         try {
1674
1675                 var e = document.getElementById("headlinesInnerContainer");
1676
1677                 // don't do infinite scrolling when Limit == All
1678
1679                 var toolbar_form = document.forms["main_toolbar_form"];
1680
1681                 var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex];
1682                 if (limit.value != 0) {
1683
1684                         debug((e.scrollTop + e.offsetHeight) + " vs " + e.scrollHeight + " dis? " +
1685                                 _infscroll_disable);
1686
1687                         if (e.scrollTop + e.offsetHeight > e.scrollHeight - 100) {
1688                                 if (!_infscroll_disable) {
1689                                         debug("more cowbell!");
1690                                         viewNextFeedPage();
1691                                 }
1692                         }
1693                 }
1694
1695         } catch (e) {
1696                 exception_error("headlines_scroll_handler", e);
1697         }
1698 }
1699
1700 function catchupRelativeToArticle(below) {
1701
1702         try {
1703
1704                 if (!xmlhttp_ready(xmlhttp_rpc)) {
1705                         printLockingError();
1706                 }
1707
1708                 if (!getActiveArticleId()) {
1709                         alert(__("No article is selected."));
1710                         return;
1711                 }
1712
1713                 var visible_ids;
1714
1715                 if (document.getElementById("headlinesList")) {
1716                         visible_ids = getVisibleHeadlineIds();
1717                 } else {
1718                         visible_ids = cdmGetVisibleArticles();
1719                 }
1720
1721                 var ids_to_mark = new Array();
1722
1723                 if (!below) {
1724                         for (var i = 0; i < visible_ids.length; i++) {
1725                                 if (visible_ids[i] != getActiveArticleId()) {
1726                                         var e = document.getElementById("RROW-" + visible_ids[i]);
1727
1728                                         if (e && e.className.match("Unread")) {
1729                                                 ids_to_mark.push(visible_ids[i]);
1730                                         }
1731                                 } else {
1732                                         break;
1733                                 }
1734                         }
1735                 } else {
1736                         for (var i = visible_ids.length-1; i >= 0; i--) {
1737                                 if (visible_ids[i] != getActiveArticleId()) {
1738                                         var e = document.getElementById("RROW-" + visible_ids[i]);
1739
1740                                         if (e && e.className.match("Unread")) {
1741                                                 ids_to_mark.push(visible_ids[i]);
1742                                         }
1743                                 } else {
1744                                         break;
1745                                 }
1746                         }
1747                 }
1748
1749                 if (ids_to_mark.length == 0) {
1750                         alert(__("No articles found to mark"));
1751                 } else {
1752                         var msg = __("Mark %d article(s) as read?").replace("%d", ids_to_mark.length);
1753
1754                         if (confirm(msg)) {
1755
1756                                 for (var i = 0; i < ids_to_mark.length; i++) {
1757                                         var e = document.getElementById("RROW-" + ids_to_mark[i]);
1758                                         e.className = e.className.replace("Unread", "");
1759                                 }
1760
1761                                 var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
1762                                         param_escape(ids_to_mark.toString()) + "&cmode=0";
1763
1764                                 new Ajax.Request(query, {
1765                                         onComplete: function(transport) {
1766                                                 catchup_callback2(transport);
1767                                         } });
1768
1769                         }
1770                 }
1771
1772         } catch (e) {
1773                 exception_error("catchupRelativeToArticle", e);
1774         }
1775 }
1776
1777 function cdmExpandArticle(a_id) {
1778         try {
1779                 var id = 'CICD-' + a_id;
1780
1781                 try {
1782                         Element.hide("CEXC-" + a_id);
1783                 } catch (e) { }
1784
1785                 Effect.Appear(id, {duration : 0.5,
1786                         beforeStart: function(effect) {
1787                                 var h_id = 'CICH-' + a_id;
1788                                 var h_elem = document.getElementById(h_id);
1789                                 if (h_elem) { h_elem.style.display = "none"; }
1790
1791                                 toggleUnread(a_id, 0);
1792                         }});
1793
1794
1795         } catch (e) {
1796                 exception_error("appearBlockElementF", e);
1797         }
1798
1799 }
1800
1801 function fixHeadlinesOrder(ids) {
1802         try {
1803                 for (var i = 0; i < ids.length; i++) {
1804                         var e = document.getElementById("RROW-" + ids[i]);
1805
1806                         if (e) {
1807                                 if (i % 2 == 0) {
1808                                         e.className = e.className.replace("even", "odd");
1809                                 } else {
1810                                         e.className = e.className.replace("odd", "even");
1811                                 }
1812                         }
1813                 }
1814         } catch (e) {
1815                 exception_error("fixHeadlinesOrder", e);
1816         }
1817 }
1818
1819 function subtoolbarSearch() {
1820         try {
1821
1822                 var q = document.getElementById("subtoolbar_search_box");
1823
1824                 if (!q) return;
1825
1826                 q = q.value.toUpperCase();
1827
1828                 var ids = false;
1829                 var vis_ids = new Array();
1830
1831                 if (document.getElementById("headlinesList")) {
1832                         ids = getVisibleHeadlineIds();
1833                 } else {
1834                         ids = cdmGetVisibleArticles();
1835                 }
1836
1837                 for (var i = 0; i < ids.length; i++) {
1838                         var title = document.getElementById("RTITLE-" + ids[i]);
1839
1840                         if (title) {
1841                                 if (!title.innerHTML.toUpperCase().match(q)) {
1842                                         Element.hide(document.getElementById("RROW-" + ids[i]));
1843                                 } else {
1844                                         Element.show(document.getElementById("RROW-" + ids[i]));
1845                                         vis_ids.push(ids[i]);
1846                                 }
1847                         }
1848                 }
1849
1850                 fixHeadlinesOrder(vis_ids);
1851
1852         } catch (e) {
1853                 exception_error("subtoolbarSearch", e);
1854         }
1855 }
1856
1857 function hideReadHeadlines() {
1858         try {
1859
1860                 var ids = false;
1861                 var vis_ids = new Array();
1862
1863                 if (document.getElementById("headlinesList")) {
1864                         ids = getVisibleHeadlineIds();
1865                 } else {
1866                         ids = cdmGetVisibleArticles();
1867                 }
1868
1869                 var read_headlines_visible = true;
1870
1871                 for (var i = 0; i < ids.length; i++) {
1872                         var row = document.getElementById("RROW-" + ids[i]);
1873
1874                         if (row && row.className) {
1875                                 if (read_headlines_visible) {
1876                                         if (row.className.match("Unread") || row.className.match("Selected")) {
1877                                                 Element.show(row);
1878                                                 vis_ids.push(ids[i]);
1879                                         } else {
1880                                                 //Effect.Fade(row, {duration : 0.3});
1881                                                 Element.hide(row);
1882                                         }
1883                                 } else {
1884                                         Element.show(row);
1885                                         vis_ids.push(ids[i]);
1886                                 }
1887                         }
1888                 }
1889
1890                 fixHeadlinesOrder(vis_ids);
1891
1892                 read_headlines_visible = !read_headlines_visible;
1893
1894         } catch (e) {
1895                 exception_error("hideReadHeadlines", e);
1896         }
1897 }
1898
1899 function invertHeadlineSelection() {
1900         try {
1901                 var rows = new Array();
1902                 var r = false;
1903
1904                 if (!isCdmMode()) {
1905                         r = document.getElementsByTagName("TR");
1906                 } else {
1907                         r = document.getElementsByTagName("DIV");
1908                 }
1909
1910                 for (var i = 0; i < r.length; i++) {
1911                         if (r[i].id && r[i].id.match("RROW-")) {
1912                                 rows.push(r[i]);
1913                         }
1914                 }
1915
1916                 for (var i = 0; i < rows.length; i++) {
1917                         var nc = rows[i].className;
1918                         var id = rows[i].id.replace("RROW-", "");
1919                         var cb = document.getElementById("RCHK-" + id);
1920
1921                         if (!rows[i].className.match("Selected")) {
1922                                 nc = nc + "Selected";
1923                                 cb.checked = true;
1924                         } else {
1925                                 nc = nc.replace("Selected", "");
1926                                 cb.checked = false;
1927                         }
1928
1929                         rows[i].className = nc;
1930
1931                 }
1932
1933         } catch (e) {
1934                 exception_error("invertHeadlineSelection", e);
1935         }
1936 }
1937
1938 function getArticleUnderPointer() {
1939         return post_under_pointer;
1940 }
1941
1942 function zoomToArticle(id) {
1943         try {
1944                 var w = window.open("backend.php?op=view&mode=zoom&id=" + param_escape(id),
1945                         "ttrss_zoom_" + id,
1946                         "status=0,toolbar=0,location=0,width=450,height=300,scrollbars=1,menubar=0");
1947
1948         } catch (e) {
1949                 exception_error("zoomToArticle", e);
1950         }
1951 }
1952
1953 function showOriginalArticleInline(id) {
1954         try {
1955
1956                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1957
1958                 notify_progress("Loading, please wait...", true);
1959
1960                 new Ajax.Request(query, {
1961                         onComplete: function(transport) {
1962
1963                                 if (transport.responseXML) {
1964
1965                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1966                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1967
1968                                         notify("");
1969
1970                                         if (link && id) {
1971                                                 link = link.firstChild.nodeValue;
1972
1973                                                 var ci = document.getElementById("content-insert");
1974
1975                                                 var tmp = "<iframe id=\"inline_orig_article\" width=\""+ci.offsetWidth+"\" height=\""+ci.offsetHeight+"\" style=\"border-width : 0px;\" src=\""+link+"\"></iframe>";
1976
1977                                                 render_article(tmp);
1978
1979                                         }
1980                                 }
1981                         } });
1982
1983         } catch (e) {
1984                 exception_error("showOriginalArticleInline", e);
1985         }
1986 }
1987
1988
1989 function scrollArticle(offset) {
1990         try {
1991                 if (!isCdmMode()) {
1992                         var ci = document.getElementById("content-insert");
1993                         if (ci) {
1994                                 ci.scrollTop += offset;
1995                         }
1996                 } else {
1997                         var hi = document.getElementById("headlinesInnerContainer");
1998                         if (hi) {
1999                                 hi.scrollTop += offset;
2000                         }
2001
2002                 }
2003         } catch (e) {
2004                 exception_error("scrollArticle", e);
2005         }
2006 }