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                         cache_invalidate("F:" + (-11 - id));
 873
 874                         new Ajax.Request(query, {
 875                                 onComplete: function(transport) {
 876                                         viewCurrentFeed();
 877                                 } });
 878
 879                 }
 880
 881         } catch (e) {
 882                 exception_error("selectionAssignLabel", e);
 883
 884         }
 885 }
 886
 887 function selectionAssignLabel(id) {
 888         try {
 889
 890                 var ids = getSelectedArticleIds2();
 891
 892                 if (ids.length == 0) {
 893                         alert(__("No articles are selected."));
 894                         return;
 895                 }
 896
 897                 var ok = confirm(__("Assign selected articles to label?"));
 898
 899                 if (ok) {
 900
 901                         cache_invalidate("F:" + (-11 - id));
 902
 903                         var query = "backend.php?op=rpc&subop=assignToLabel&ids=" +
 904                                 param_escape(ids.toString()) + "&lid=" + param_escape(id);
 905
 906 //                      notify_progress("Loading, please wait...");
 907
 908                         new Ajax.Request(query, {
 909                                 onComplete: function(transport) {
 910                                         show_labels_in_headlines(transport);
 911                                         all_counters_callback2(transport);
 912                                 } });
 913
 914                 }
 915
 916         } catch (e) {
 917                 exception_error("selectionAssignLabel", e);
 918
 919         }
 920 }
 921
 922 function selectionToggleUnread(cdm_mode, set_state, callback_func, no_error) {
 923         try {
 924                 var rows;
 925
 926                 if (cdm_mode) {
 927                         rows = cdmGetSelectedArticles();
 928                 } else {
 929                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 930                 }
 931
 932                 if (rows.length == 0 && !no_error) {
 933                         alert(__("No articles are selected."));
 934                         return;
 935                 }
 936
 937                 for (i = 0; i < rows.length; i++) {
 938                         var row = document.getElementById("RROW-" + rows[i]);
 939                         if (row) {
 940                                 var nc = row.className;
 941                                 nc = nc.replace("Unread", "");
 942                                 nc = nc.replace("Selected", "");
 943
 944                                 if (set_state == undefined) {
 945                                         if (row.className.match("Unread")) {
 946                                                 row.className = nc + "Selected";
 947                                         } else {
 948                                                 row.className = nc + "UnreadSelected";
 949                                         }
 950                                 }
 951
 952                                 if (set_state == false) {
 953                                         row.className = nc + "Selected";
 954                                 }
 955
 956                                 if (set_state == true) {
 957                                         row.className = nc + "UnreadSelected";
 958                                 }
 959                         }
 960                 }
 961
 962                 if (rows.length > 0) {
 963
 964                         var cmode = "";
 965
 966                         if (set_state == undefined) {
 967                                 cmode = "2";
 968                         } else if (set_state == true) {
 969                                 cmode = "1";
 970                         } else if (set_state == false) {
 971                                 cmode = "0";
 972                         }
 973
 974                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 975                                 param_escape(rows.toString()) + "&cmode=" + cmode;
 976
 977                         notify_progress("Loading, please wait...");
 978
 979                         new Ajax.Request(query, {
 980                                 onComplete: function(transport) {
 981                                         catchup_callback2(transport, callback_func);
 982                                 } });
 983
 984                 }
 985
 986         } catch (e) {
 987                 exception_error("selectionToggleUnread", e);
 988         }
 989 }
 990
 991 function selectionToggleMarked(cdm_mode) {
 992         try {
 993
 994                 var rows;
 995
 996                 if (cdm_mode) {
 997                         rows = cdmGetSelectedArticles();
 998                 } else {
 999                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1000                 }
1001
1002                 if (rows.length == 0) {
1003                         alert(__("No articles are selected."));
1004                         return;
1005                 }
1006
1007                 for (i = 0; i < rows.length; i++) {
1008                         toggleMark(rows[i], true, true);
1009                 }
1010
1011                 if (rows.length > 0) {
1012
1013                         var query = "backend.php?op=rpc&subop=markSelected&ids=" +
1014                                 param_escape(rows.toString()) + "&cmode=2";
1015
1016                         query = query + "&afid=" + getActiveFeedId();
1017
1018 /*                      if (tagsAreDisplayed()) {
1019                                 query = query + "&omode=tl";
1020                         } else {
1021                                 query = query + "&omode=flc";
1022                         } */
1023
1024                         query = query + "&omode=lc";
1025
1026                         new Ajax.Request(query, {
1027                                 onComplete: function(transport) {
1028                                         all_counters_callback2(transport);
1029                                 } });
1030
1031                 }
1032
1033         } catch (e) {
1034                 exception_error("selectionToggleMarked", e);
1035         }
1036 }
1037
1038 function selectionTogglePublished(cdm_mode) {
1039         try {
1040
1041                 var rows;
1042
1043                 if (cdm_mode) {
1044                         rows = cdmGetSelectedArticles();
1045                 } else {
1046                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1047                 }
1048
1049                 if (rows.length == 0) {
1050                         alert(__("No articles are selected."));
1051                         return;
1052                 }
1053
1054                 for (i = 0; i < rows.length; i++) {
1055                         togglePub(rows[i], true, true);
1056                 }
1057
1058                 if (rows.length > 0) {
1059
1060                         var query = "backend.php?op=rpc&subop=publishSelected&ids=" +
1061                                 param_escape(rows.toString()) + "&cmode=2";
1062
1063                         query = query + "&afid=" + getActiveFeedId();
1064
1065 /*                      if (tagsAreDisplayed()) {
1066                                 query = query + "&omode=tl";
1067                         } else {
1068                                 query = query + "&omode=flc";
1069                         } */
1070
1071                         query = query + "&omode=lc";
1072
1073                         new Ajax.Request(query, {
1074                                 onComplete: function(transport) {
1075                                         all_counters_callback2(transport);
1076                                 } });
1077
1078                 }
1079
1080         } catch (e) {
1081                 exception_error("selectionToggleMarked", e);
1082         }
1083 }
1084
1085 function cdmGetSelectedArticles() {
1086         var sel_articles = new Array();
1087         var container = document.getElementById("headlinesInnerContainer");
1088
1089         for (i = 0; i < container.childNodes.length; i++) {
1090                 var child = container.childNodes[i];
1091
1092                 if (child.id && child.id.match("RROW-") && child.className.match("Selected")) {
1093                         var c_id = child.id.replace("RROW-", "");
1094                         sel_articles.push(c_id);
1095                 }
1096         }
1097
1098         return sel_articles;
1099 }
1100
1101 function cdmGetVisibleArticles() {
1102         var sel_articles = new Array();
1103         var container = document.getElementById("headlinesInnerContainer");
1104
1105         if (!container) return sel_articles;
1106
1107         for (i = 0; i < container.childNodes.length; i++) {
1108                 var child = container.childNodes[i];
1109
1110                 if (child.id && child.id.match("RROW-")) {
1111                         var c_id = child.id.replace("RROW-", "");
1112                         sel_articles.push(c_id);
1113                 }
1114         }
1115
1116         return sel_articles;
1117 }
1118
1119 function cdmGetUnreadArticles() {
1120         var sel_articles = new Array();
1121         var container = document.getElementById("headlinesInnerContainer");
1122
1123         for (i = 0; i < container.childNodes.length; i++) {
1124                 var child = container.childNodes[i];
1125
1126                 if (child.id && child.id.match("RROW-") && child.className.match("Unread")) {
1127                         var c_id = child.id.replace("RROW-", "");
1128                         sel_articles.push(c_id);
1129                 }
1130         }
1131
1132         return sel_articles;
1133 }
1134
1135
1136 // mode = all,none,unread
1137 function cdmSelectArticles(mode) {
1138         var container = document.getElementById("headlinesInnerContainer");
1139
1140         for (i = 0; i < container.childNodes.length; i++) {
1141                 var child = container.childNodes[i];
1142
1143                 if (child.id && child.id.match("RROW-")) {
1144                         var aid = child.id.replace("RROW-", "");
1145
1146                         var cb = document.getElementById("RCHK-" + aid);
1147
1148                         if (mode == "all") {
1149                                 if (!child.className.match("Selected")) {
1150                                         child.className = child.className + "Selected";
1151                                         cb.checked = true;
1152                                 }
1153                         } else if (mode == "unread") {
1154                                 if (child.className.match("Unread") && !child.className.match("Selected")) {
1155                                         child.className = child.className + "Selected";
1156                                         cb.checked = true;
1157                                 }
1158                         } else {
1159                                 child.className = child.className.replace("Selected", "");
1160                                 cb.checked = false;
1161                         }
1162                 }
1163         }
1164 }
1165
1166 function catchupPage() {
1167
1168         var fn = getFeedName(getActiveFeedId(), activeFeedIsCat());
1169
1170         var str = __("Mark all visible articles in %s as read?");
1171
1172         str = str.replace("%s", fn);
1173
1174         if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
1175                 return;
1176         }
1177
1178         if (document.getElementById("headlinesList")) {
1179                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true);
1180                 selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
1181                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
1182         } else {
1183                 cdmSelectArticles('all');
1184                 selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
1185                 cdmSelectArticles('none');
1186         }
1187 }
1188
1189 function catchupSelection() {
1190
1191         try {
1192
1193                 var rows;
1194
1195                 if (document.getElementById("headlinesList")) {
1196                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1197                 } else {
1198                         rows = cdmGetSelectedArticles();
1199                 }
1200
1201                 if (rows.length == 0) {
1202                         alert(__("No articles are selected."));
1203                         return;
1204                 }
1205
1206
1207                 var fn = getFeedName(getActiveFeedId(), activeFeedIsCat());
1208
1209                 var str = __("Mark %d selected articles in %s as read?");
1210
1211                 str = str.replace("%d", rows.length);
1212                 str = str.replace("%s", fn);
1213
1214                 if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
1215                         return;
1216                 }
1217
1218                 if (document.getElementById("headlinesList")) {
1219                         selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
1220         //              selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
1221                 } else {
1222                         selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
1223         //              cdmSelectArticles('none');
1224                 }
1225
1226         } catch (e) {
1227                 exception_error("catchupSelection", e);
1228         }
1229 }
1230
1231 function editArticleTags(id, feed_id, cdm_enabled) {
1232         _tag_active_post_id = id;
1233         _tag_active_feed_id = feed_id;
1234         _tag_active_cdm = cdm_enabled;
1235
1236         cache_invalidate(id);
1237
1238         try {
1239                 _tag_cdm_scroll = document.getElementById("headlinesInnerContainer").scrollTop;
1240         } catch (e) { }
1241         displayDlg('editArticleTags', id);
1242 }
1243
1244
1245 function tag_saved_callback(transport) {
1246         try {
1247                 debug("in tag_saved_callback");
1248
1249                 closeInfoBox();
1250                 notify("");
1251
1252                 if (tagsAreDisplayed()) {
1253                         _reload_feedlist_after_view = true;
1254                 }
1255
1256                 if (!_tag_active_cdm) {
1257                         if (active_post_id == _tag_active_post_id) {
1258                                 debug("reloading current article");
1259                                 view(_tag_active_post_id, _tag_active_feed_id);
1260                         }
1261                 } else {
1262                         debug("reloading current feed");
1263                         viewCurrentFeed();
1264                 }
1265
1266         } catch (e) {
1267                 exception_error("catchup_callback", e);
1268         }
1269 }
1270
1271 function editTagsSave() {
1272
1273         notify_progress("Saving article tags...");
1274
1275         var form = document.forms["tag_edit_form"];
1276
1277         var query = Form.serialize("tag_edit_form");
1278
1279         query = "backend.php?op=rpc&subop=setArticleTags&" + query;
1280
1281         debug(query);
1282
1283         new Ajax.Request(query, {
1284                 onComplete: function(transport) {
1285                                 tag_saved_callback(transport);
1286                         } });
1287
1288 }
1289
1290 function editTagsInsert() {
1291         try {
1292
1293                 var form = document.forms["tag_edit_form"];
1294
1295                 var found_tags = form.found_tags;
1296                 var tags_str = form.tags_str;
1297
1298                 var tag = found_tags[found_tags.selectedIndex].value;
1299
1300                 if (tags_str.value.length > 0 &&
1301                                 tags_str.value.lastIndexOf(", ") != tags_str.value.length - 2) {
1302
1303                         tags_str.value = tags_str.value + ", ";
1304                 }
1305
1306                 tags_str.value = tags_str.value + tag + ", ";
1307
1308                 found_tags.selectedIndex = 0;
1309
1310         } catch (e) {
1311                 exception_error("editTagsInsert", e);
1312         }
1313 }
1314
1315 function cdmScrollViewport(where) {
1316         debug("cdmScrollViewport: " + where);
1317
1318         var ctr = document.getElementById("headlinesInnerContainer");
1319
1320         if (!ctr) return;
1321
1322         if (where == "bottom") {
1323                 ctr.scrollTop = ctr.scrollHeight;
1324         } else {
1325                 ctr.scrollTop = where;
1326         }
1327 }
1328
1329 function cdmArticleIsBelowViewport(id) {
1330         try {
1331                 var ctr = document.getElementById("headlinesInnerContainer");
1332                 var e = document.getElementById("RROW-" + id);
1333
1334                 if (!e || !ctr) return;
1335
1336                 // article starts below viewport
1337
1338                 if (ctr.scrollTop < e.offsetTop) {
1339                         return true;
1340                 } else {
1341                         return false;
1342                 }
1343
1344         } catch (e) {
1345                 exception_error("cdmArticleIsVisible", e);
1346         }
1347 }
1348
1349 function cdmArticleIsAboveViewport(id) {
1350         try {
1351                 var ctr = document.getElementById("headlinesInnerContainer");
1352                 var e = document.getElementById("RROW-" + id);
1353
1354                 if (!e || !ctr) return;
1355
1356                 // article starts above viewport
1357
1358                 if (ctr.scrollTop > e.offsetTop + e.offsetHeight) {
1359                         return true;
1360                 } else {
1361                         return false;
1362                 }
1363
1364         } catch (e) {
1365                 exception_error("cdmArticleIsVisible", e);
1366         }
1367 }
1368
1369 function cdmScrollToArticleId(id) {
1370         try {
1371                 var ctr = document.getElementById("headlinesInnerContainer");
1372                 var e = document.getElementById("RROW-" + id);
1373
1374                 if (!e || !ctr) return;
1375
1376                 ctr.scrollTop = e.offsetTop;
1377
1378         } catch (e) {
1379                 exception_error("cdmScrollToArticleId", e);
1380         }
1381 }
1382
1383 function cdmArticleIsActuallyVisible(id) {
1384         try {
1385                 var ctr = document.getElementById("headlinesInnerContainer");
1386                 var e = document.getElementById("RROW-" + id);
1387
1388                 if (!e || !ctr) return;
1389
1390                 // article fits in viewport OR article is longer than viewport and
1391                 // its bottom is visible
1392
1393                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
1394                                 ctr.scrollTop + ctr.offsetHeight) {
1395
1396                         return true;
1397
1398                 } else if (e.offsetHeight > ctr.offsetHeight &&
1399                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1400                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
1401
1402                         return true;
1403
1404                 }
1405
1406                 return false;
1407
1408         } catch (e) {
1409                 exception_error("cdmArticleIsVisible", e);
1410         }
1411 }
1412
1413 function cdmWatchdog() {
1414
1415         try {
1416
1417                 var ctr = document.getElementById("headlinesInnerContainer");
1418
1419                 if (!ctr) return;
1420
1421                 var ids = new Array();
1422
1423                 var e = ctr.firstChild;
1424
1425                 while (e) {
1426                         if (e.className && e.className == "cdmArticleUnread" && e.id &&
1427                                         e.id.match("RROW-")) {
1428
1429                                 // article fits in viewport OR article is longer than viewport and
1430                                 // its bottom is visible
1431
1432                                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
1433                                                 ctr.scrollTop + ctr.offsetHeight) {
1434
1435 //                                      debug(e.id + " is visible " + e.offsetTop + "." +
1436 //                                              (e.offsetTop + e.offsetHeight) + " vs " + ctr.scrollTop + "." +
1437 //                                              (ctr.scrollTop + ctr.offsetHeight));
1438
1439                                         ids.push(e.id.replace("RROW-", ""));
1440
1441                                 } else if (e.offsetHeight > ctr.offsetHeight &&
1442                                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1443                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
1444
1445                                         ids.push(e.id.replace("RROW-", ""));
1446
1447                                 }
1448
1449                                 // method 2: article bottom is visible and is in upper 1/2 of the viewport
1450
1451 /*                              if (e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
1452                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight/2) {
1453
1454                                         ids.push(e.id.replace("RROW-", ""));
1455
1456                                 } */
1457
1458                         }
1459
1460                         e = e.nextSibling;
1461                 }
1462
1463                 debug("cdmWatchdog, ids= " + ids.toString());
1464
1465                 if (ids.length > 0) {
1466
1467                         for (var i = 0; i < ids.length; i++) {
1468                                 var e = document.getElementById("RROW-" + ids[i]);
1469                                 if (e) {
1470                                         e.className = e.className.replace("Unread", "");
1471                                 }
1472                         }
1473
1474                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
1475                                 param_escape(ids.toString()) + "&cmode=0";
1476
1477                         new Ajax.Request(query, {
1478                                 onComplete: function(transport) {
1479                                         all_counters_callback2(transport);
1480                                 } });
1481
1482                 }
1483
1484                 _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 4000);
1485
1486         } catch (e) {
1487                 exception_error("cdmWatchdog", e);
1488         }
1489
1490 }
1491
1492
1493 function cache_inject(id, article, param) {
1494         if (!cache_check_param(id, param)) {
1495                 debug("cache_article: miss: " + id + " [p=" + param + "]");
1496
1497                 var cache_obj = new Array();
1498
1499                 cache_obj["id"] = id;
1500                 cache_obj["data"] = article;
1501                 cache_obj["param"] = param;
1502
1503                 article_cache.push(cache_obj);
1504
1505         } else {
1506                 debug("cache_article: hit: " + id + " [p=" + param + "]");
1507         }
1508 }
1509
1510 function cache_find(id) {
1511         for (var i = 0; i < article_cache.length; i++) {
1512                 if (article_cache[i]["id"] == id) {
1513                         return article_cache[i]["data"];
1514                 }
1515         }
1516         return false;
1517 }
1518
1519 function cache_find_param(id, param) {
1520         for (var i = 0; i < article_cache.length; i++) {
1521                 if (article_cache[i]["id"] == id && article_cache[i]["param"] == param) {
1522                         return article_cache[i]["data"];
1523                 }
1524         }
1525         return false;
1526 }
1527
1528 function cache_check(id) {
1529         for (var i = 0; i < article_cache.length; i++) {
1530                 if (article_cache[i]["id"] == id) {
1531                         return true;
1532                 }
1533         }
1534         return false;
1535 }
1536
1537 function cache_check_param(id, param) {
1538         for (var i = 0; i < article_cache.length; i++) {
1539
1540 //              debug("cache_check_param " + article_cache[i]["id"] + ":" +
1541 //                      article_cache[i]["param"] + " vs " + id + ":" + param);
1542
1543                 if (article_cache[i]["id"] == id && article_cache[i]["param"] == param) {
1544                         return true;
1545                 }
1546         }
1547         return false;
1548 }
1549
1550 function cache_expire() {
1551         while (article_cache.length > 25) {
1552                 article_cache.shift();
1553         }
1554 }
1555
1556 function cache_empty() {
1557         article_cache = new Array();
1558 }
1559
1560 function cache_invalidate(id) {
1561         var i = 0
1562
1563         try {
1564
1565                 while (i < article_cache.length) {
1566                         if (article_cache[i]["id"] == id) {
1567                                 debug("cache_invalidate: removed id " + id);
1568                                 article_cache.splice(i, 1);
1569                                 return true;
1570                         }
1571                         i++;
1572                 }
1573                 debug("cache_invalidate: id not found: " + id);
1574                 return false;
1575         } catch (e) {
1576                 exception_error("cache_invalidate", e);
1577         }
1578 }
1579
1580 function getActiveArticleId() {
1581         return active_post_id;
1582 }
1583
1584 function cdmClicked(id) {
1585         try {
1586                 var elem = document.getElementById("RROW-" + id);
1587
1588                 if (elem) {
1589                         var id = elem.id.replace("RROW-", "");
1590                         active_post_id = id;
1591
1592                         cdmSelectArticles("none");
1593                         toggleUnread(id, 0, true);
1594                         toggleSelected(id);
1595
1596                 }
1597         } catch (e) {
1598                 exception_error("cdmClicked", e);
1599         }
1600 }
1601
1602 function preload_article_callback(transport) {
1603         try {
1604                 if (transport.responseXML) {
1605                         var articles = transport.responseXML.getElementsByTagName("article");
1606
1607                         for (var i = 0; i < articles.length; i++) {
1608                                 var id = articles[i].getAttribute("id");
1609                                 if (!cache_check(id)) {
1610                                         cache_inject(id, articles[i].firstChild.nodeValue);
1611                                         debug("preloaded article: " + id);
1612                                 }
1613                         }
1614                 }
1615         } catch (e) {
1616                 exception_error("preload_article_callback", e);
1617         }
1618 }
1619
1620 function preloadArticleUnderPointer(id) {
1621         try {
1622                 if (getInitParam("bw_limit") == "1") return;
1623
1624                 if (post_under_pointer == id && !cache_check(id)) {
1625
1626                         debug("trying to preload article " + id);
1627
1628                         var neighbor_ids = getRelativePostIds(id, 1);
1629
1630                         /* only request uncached articles */
1631
1632                         var cids_to_request = Array();
1633
1634                         for (var i = 0; i < neighbor_ids.length; i++) {
1635                                 if (!cache_check(neighbor_ids[i])) {
1636                                         cids_to_request.push(neighbor_ids[i]);
1637                                 }
1638                         }
1639                         debug("additional ids: " + cids_to_request.toString());
1640
1641                         cids_to_request.push(id);
1642
1643                         var query = "backend.php?op=rpc&subop=getArticles&ids=" +
1644                                 cids_to_request.toString();
1645                         new Ajax.Request(query, {
1646                                 onComplete: function(transport) {
1647                                         preload_article_callback(transport);
1648                         } });
1649                 }
1650         } catch (e) {
1651                 exception_error("preloadArticleUnderPointer", e);
1652         }
1653 }
1654
1655 function postMouseIn(id) {
1656         try {
1657                 if (post_under_pointer != id) {
1658                         post_under_pointer = id;
1659                         if (!isCdmMode()) {
1660                                 window.setTimeout("preloadArticleUnderPointer(" + id + ")", 250);
1661                         }
1662                 }
1663
1664         } catch (e) {
1665                 exception_error("postMouseIn", e);
1666         }
1667 }
1668
1669 function postMouseOut(id) {
1670         try {
1671                 post_under_pointer = false;
1672         } catch (e) {
1673                 exception_error("postMouseOut", e);
1674         }
1675 }
1676
1677 function headlines_scroll_handler() {
1678         try {
1679
1680                 var e = document.getElementById("headlinesInnerContainer");
1681
1682                 // don't do infinite scrolling when Limit == All
1683
1684                 var toolbar_form = document.forms["main_toolbar_form"];
1685
1686                 var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex];
1687                 if (limit.value != 0) {
1688
1689                         debug((e.scrollTop + e.offsetHeight) + " vs " + e.scrollHeight + " dis? " +
1690                                 _infscroll_disable);
1691
1692                         if (e.scrollTop + e.offsetHeight > e.scrollHeight - 100) {
1693                                 if (!_infscroll_disable) {
1694                                         debug("more cowbell!");
1695                                         viewNextFeedPage();
1696                                 }
1697                         }
1698                 }
1699
1700         } catch (e) {
1701                 exception_error("headlines_scroll_handler", e);
1702         }
1703 }
1704
1705 function catchupRelativeToArticle(below) {
1706
1707         try {
1708
1709                 if (!xmlhttp_ready(xmlhttp_rpc)) {
1710                         printLockingError();
1711                 }
1712
1713                 if (!getActiveArticleId()) {
1714                         alert(__("No article is selected."));
1715                         return;
1716                 }
1717
1718                 var visible_ids;
1719
1720                 if (document.getElementById("headlinesList")) {
1721                         visible_ids = getVisibleHeadlineIds();
1722                 } else {
1723                         visible_ids = cdmGetVisibleArticles();
1724                 }
1725
1726                 var ids_to_mark = new Array();
1727
1728                 if (!below) {
1729                         for (var i = 0; i < visible_ids.length; i++) {
1730                                 if (visible_ids[i] != getActiveArticleId()) {
1731                                         var e = document.getElementById("RROW-" + visible_ids[i]);
1732
1733                                         if (e && e.className.match("Unread")) {
1734                                                 ids_to_mark.push(visible_ids[i]);
1735                                         }
1736                                 } else {
1737                                         break;
1738                                 }
1739                         }
1740                 } else {
1741                         for (var i = visible_ids.length-1; i >= 0; i--) {
1742                                 if (visible_ids[i] != getActiveArticleId()) {
1743                                         var e = document.getElementById("RROW-" + visible_ids[i]);
1744
1745                                         if (e && e.className.match("Unread")) {
1746                                                 ids_to_mark.push(visible_ids[i]);
1747                                         }
1748                                 } else {
1749                                         break;
1750                                 }
1751                         }
1752                 }
1753
1754                 if (ids_to_mark.length == 0) {
1755                         alert(__("No articles found to mark"));
1756                 } else {
1757                         var msg = __("Mark %d article(s) as read?").replace("%d", ids_to_mark.length);
1758
1759                         if (confirm(msg)) {
1760
1761                                 for (var i = 0; i < ids_to_mark.length; i++) {
1762                                         var e = document.getElementById("RROW-" + ids_to_mark[i]);
1763                                         e.className = e.className.replace("Unread", "");
1764                                 }
1765
1766                                 var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
1767                                         param_escape(ids_to_mark.toString()) + "&cmode=0";
1768
1769                                 new Ajax.Request(query, {
1770                                         onComplete: function(transport) {
1771                                                 catchup_callback2(transport);
1772                                         } });
1773
1774                         }
1775                 }
1776
1777         } catch (e) {
1778                 exception_error("catchupRelativeToArticle", e);
1779         }
1780 }
1781
1782 function cdmExpandArticle(a_id) {
1783         try {
1784                 var id = 'CICD-' + a_id;
1785
1786                 try {
1787                         Element.hide("CEXC-" + a_id);
1788                 } catch (e) { }
1789
1790                 Effect.Appear(id, {duration : 0.5,
1791                         beforeStart: function(effect) {
1792                                 var h_id = 'CICH-' + a_id;
1793                                 var h_elem = document.getElementById(h_id);
1794                                 if (h_elem) { h_elem.style.display = "none"; }
1795
1796                                 toggleUnread(a_id, 0);
1797                         }});
1798
1799
1800         } catch (e) {
1801                 exception_error("appearBlockElementF", e);
1802         }
1803
1804 }
1805
1806 function fixHeadlinesOrder(ids) {
1807         try {
1808                 for (var i = 0; i < ids.length; i++) {
1809                         var e = document.getElementById("RROW-" + ids[i]);
1810
1811                         if (e) {
1812                                 if (i % 2 == 0) {
1813                                         e.className = e.className.replace("even", "odd");
1814                                 } else {
1815                                         e.className = e.className.replace("odd", "even");
1816                                 }
1817                         }
1818                 }
1819         } catch (e) {
1820                 exception_error("fixHeadlinesOrder", e);
1821         }
1822 }
1823
1824 function subtoolbarSearch() {
1825         try {
1826
1827                 var q = document.getElementById("subtoolbar_search_box");
1828
1829                 if (!q) return;
1830
1831                 q = q.value.toUpperCase();
1832
1833                 var ids = false;
1834                 var vis_ids = new Array();
1835
1836                 if (document.getElementById("headlinesList")) {
1837                         ids = getVisibleHeadlineIds();
1838                 } else {
1839                         ids = cdmGetVisibleArticles();
1840                 }
1841
1842                 for (var i = 0; i < ids.length; i++) {
1843                         var title = document.getElementById("RTITLE-" + ids[i]);
1844
1845                         if (title) {
1846                                 if (!title.innerHTML.toUpperCase().match(q)) {
1847                                         Element.hide(document.getElementById("RROW-" + ids[i]));
1848                                 } else {
1849                                         Element.show(document.getElementById("RROW-" + ids[i]));
1850                                         vis_ids.push(ids[i]);
1851                                 }
1852                         }
1853                 }
1854
1855                 fixHeadlinesOrder(vis_ids);
1856
1857         } catch (e) {
1858                 exception_error("subtoolbarSearch", e);
1859         }
1860 }
1861
1862 function hideReadHeadlines() {
1863         try {
1864
1865                 var ids = false;
1866                 var vis_ids = new Array();
1867
1868                 if (document.getElementById("headlinesList")) {
1869                         ids = getVisibleHeadlineIds();
1870                 } else {
1871                         ids = cdmGetVisibleArticles();
1872                 }
1873
1874                 var read_headlines_visible = true;
1875
1876                 for (var i = 0; i < ids.length; i++) {
1877                         var row = document.getElementById("RROW-" + ids[i]);
1878
1879                         if (row && row.className) {
1880                                 if (read_headlines_visible) {
1881                                         if (row.className.match("Unread") || row.className.match("Selected")) {
1882                                                 Element.show(row);
1883                                                 vis_ids.push(ids[i]);
1884                                         } else {
1885                                                 //Effect.Fade(row, {duration : 0.3});
1886                                                 Element.hide(row);
1887                                         }
1888                                 } else {
1889                                         Element.show(row);
1890                                         vis_ids.push(ids[i]);
1891                                 }
1892                         }
1893                 }
1894
1895                 fixHeadlinesOrder(vis_ids);
1896
1897                 read_headlines_visible = !read_headlines_visible;
1898
1899         } catch (e) {
1900                 exception_error("hideReadHeadlines", e);
1901         }
1902 }
1903
1904 function invertHeadlineSelection() {
1905         try {
1906                 var rows = new Array();
1907                 var r = false;
1908
1909                 if (!isCdmMode()) {
1910                         r = document.getElementsByTagName("TR");
1911                 } else {
1912                         r = document.getElementsByTagName("DIV");
1913                 }
1914
1915                 for (var i = 0; i < r.length; i++) {
1916                         if (r[i].id && r[i].id.match("RROW-")) {
1917                                 rows.push(r[i]);
1918                         }
1919                 }
1920
1921                 for (var i = 0; i < rows.length; i++) {
1922                         var nc = rows[i].className;
1923                         var id = rows[i].id.replace("RROW-", "");
1924                         var cb = document.getElementById("RCHK-" + id);
1925
1926                         if (!rows[i].className.match("Selected")) {
1927                                 nc = nc + "Selected";
1928                                 cb.checked = true;
1929                         } else {
1930                                 nc = nc.replace("Selected", "");
1931                                 cb.checked = false;
1932                         }
1933
1934                         rows[i].className = nc;
1935
1936                 }
1937
1938         } catch (e) {
1939                 exception_error("invertHeadlineSelection", e);
1940         }
1941 }
1942
1943 function getArticleUnderPointer() {
1944         return post_under_pointer;
1945 }
1946
1947 function zoomToArticle(id) {
1948         try {
1949                 var w = window.open("backend.php?op=view&mode=zoom&id=" + param_escape(id),
1950                         "ttrss_zoom_" + id,
1951                         "status=0,toolbar=0,location=0,width=450,height=300,scrollbars=1,menubar=0");
1952
1953         } catch (e) {
1954                 exception_error("zoomToArticle", e);
1955         }
1956 }
1957
1958 function showOriginalArticleInline(id) {
1959         try {
1960
1961                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1962
1963                 notify_progress("Loading, please wait...", true);
1964
1965                 new Ajax.Request(query, {
1966                         onComplete: function(transport) {
1967
1968                                 if (transport.responseXML) {
1969
1970                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1971                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1972
1973                                         notify("");
1974
1975                                         if (link && id) {
1976                                                 link = link.firstChild.nodeValue;
1977
1978                                                 var ci = document.getElementById("content-insert");
1979
1980                                                 var tmp = "<iframe id=\"inline_orig_article\" width=\""+ci.offsetWidth+"\" height=\""+ci.offsetHeight+"\" style=\"border-width : 0px;\" src=\""+link+"\"></iframe>";
1981
1982                                                 render_article(tmp);
1983
1984                                         }
1985                                 }
1986                         } });
1987
1988         } catch (e) {
1989                 exception_error("showOriginalArticleInline", e);
1990         }
1991 }
1992
1993
1994 function scrollArticle(offset) {
1995         try {
1996                 if (!isCdmMode()) {
1997                         var ci = document.getElementById("content-insert");
1998                         if (ci) {
1999                                 ci.scrollTop += offset;
2000                         }
2001                 } else {
2002                         var hi = document.getElementById("headlinesInnerContainer");
2003                         if (hi) {
2004                                 hi.scrollTop += offset;
2005                         }
2006
2007                 }
2008         } catch (e) {
2009                 exception_error("scrollArticle", e);
2010         }
2011 }
2012
2013 function show_labels_in_headlines(transport) {
2014         try {
2015                 if (transport.responseXML) {
2016                         var info = transport.responseXML.getElementsByTagName("info-for-headlines")[0];
2017
2018                         var elems = info.getElementsByTagName("entry");
2019
2020                         for (var l = 0; l < elems.length; l++) {
2021                                 var e_id = elems[l].getAttribute("id");
2022
2023                                 if (e_id) {
2024
2025                                         var ctr = document.getElementById("HLLCTR-" + e_id);
2026
2027                                         if (ctr) {
2028                                                 ctr.innerHTML = elems[l].firstChild.nodeValue;
2029                                         }
2030                                 }
2031
2032                         }
2033
2034                 }
2035         } catch (e) {
2036                 exception_error("show_labels_in_headlines", e);
2037
2038         }
2039 }