viewfeed.js

   1 var active_post_id = false;
   2 var _catchup_callback_func = false;
   3 var last_article_view = false;
   4 var active_real_feed_id = false;
   5
   6 var _tag_active_post_id = false;
   7 var _tag_active_feed_id = false;
   8 var _tag_active_cdm = false;
   9
  10 // FIXME: kludge, to restore scrollTop after tag editor terminates
  11 var _tag_cdm_scroll = false;
  12
  13 // FIXME: kludges, needs proper implementation
  14 var _reload_feedlist_after_view = false;
  15
  16 var _cdm_wd_timeout = false;
  17 var _cdm_wd_vishist = new Array();
  18
  19 var article_cache = new Array();
  20
  21 function catchup_callback() {
  22         if (xmlhttp_rpc.readyState == 4) {
  23                 try {
  24                         debug("catchup_callback");
  25                         if (_catchup_callback_func) {
  26                                 setTimeout(_catchup_callback_func, 100);
  27                         }
  28                         notify("");
  29                         all_counters_callback();
  30                 } catch (e) {
  31                         exception_error("catchup_callback", e);
  32                 }
  33         }
  34 }
  35
  36 function headlines_callback() {
  37         if (xmlhttp.readyState == 4) {
  38                 debug("headlines_callback");
  39                 var f = document.getElementById("headlines-frame");
  40                 try {
  41                         f.scrollTop = 0;
  42                 } catch (e) { };
  43
  44                 if (xmlhttp.responseXML) {
  45                         var headlines = xmlhttp.responseXML.getElementsByTagName("headlines")[0];
  46                         var counters = xmlhttp.responseXML.getElementsByTagName("counters")[0];
  47                         var articles = xmlhttp.responseXML.getElementsByTagName("article");
  48                         var runtime_info = xmlhttp.responseXML.getElementsByTagName("runtime-info");
  49
  50                         if (headlines) {
  51                                 f.innerHTML = headlines.firstChild.nodeValue;
  52                         } else {
  53                                 debug("headlines_callback: returned no data");
  54                         f.innerHTML = "<div class='whiteBox'>" + __('Could not update headlines (missing XML data)') + "</div>";
  55
  56                         }
  57
  58                         if (articles) {
  59                                 for (var i = 0; i < articles.length; i++) {
  60                                         var a_id = articles[i].getAttribute("id");
  61                                         debug("found id: " + a_id);
  62                                         cache_inject(a_id, articles[i].firstChild.nodeValue);
  63                                 }
  64                         } else {
  65                                 debug("no cached articles received");
  66                         }
  67
  68                         if (counters) {
  69                                 debug("parsing piggybacked counters: " + counters);
  70                                 parse_counters(counters, false);
  71                         } else {
  72                                 debug("counters container not found in reply");
  73                         }
  74
  75                         if (runtime_info) {
  76                                 debug("parsing runtime info: " + runtime_info[0]);
  77                                 parse_runtime_info(runtime_info[0]);
  78                         } else {
  79                                 debug("counters container not found in reply");
  80                         }
  81
  82                 } else {
  83                         debug("headlines_callback: returned no XML object");
  84                         f.innerHTML = "<div class='whiteBox'>" + __('Could not update headlines (missing XML object)') + "</div>";
  85                 }
  86
  87                 if (typeof correctPNG != 'undefined') {
  88                         correctPNG();
  89                 }
  90
  91                 if (_cdm_wd_timeout) window.clearTimeout(_cdm_wd_timeout);
  92
  93                 if (!document.getElementById("headlinesList") &&
  94                                 getInitParam("cdm_auto_catchup") == 1) {
  95                         debug("starting CDM watchdog");
  96                         _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 5000);
  97                         _cdm_wd_vishist = new Array();
  98                 } else {
  99                         debug("not in CDM mode or watchdog disabled");
 100                 }
 101
 102                 if (_tag_cdm_scroll) {
 103                         try {
 104                                 document.getElementById("headlinesInnerContainer").scrollTop = _tag_cdm_scroll;
 105                                 _tag_cdm_scroll = false;
 106                         } catch (e) { }
 107                 }
 108
 109                 notify("");
 110         }
 111 }
 112
 113 function render_article(article) {
 114         try {
 115                 var f = document.getElementById("content-frame");
 116                 try {
 117                         f.scrollTop = 0;
 118                 } catch (e) { };
 119
 120                 f.innerHTML = article;
 121
 122         } catch (e) {
 123                 exception_error("render_article", e);
 124         }
 125 }
 126
 127 function article_callback() {
 128         if (xmlhttp.readyState == 4) {
 129                 debug("article_callback");
 130
 131                 try {
 132                         if (xmlhttp.responseXML) {
 133                                 var reply = xmlhttp.responseXML.firstChild.firstChild;
 134
 135                                 var articles = xmlhttp.responseXML.getElementsByTagName("article");
 136
 137                                 for (var i = 0; i < articles.length; i++) {
 138                                         var a_id = articles[i].getAttribute("id");
 139
 140                                         debug("found id: " + a_id);
 141
 142                                         if (a_id == active_post_id) {
 143                                                 debug("active article, rendering...");
 144                                                 render_article(articles[i].firstChild.nodeValue);
 145                                         }
 146
 147                                         cache_inject(a_id, articles[i].firstChild.nodeValue);
 148                                 }
 149
 150                         } else {
 151                                 debug("article_callback: returned no XML object");
 152                                 var f = document.getElementById("content-frame");
 153                                 f.innerHTML = "<div class='whiteBox'>" + __('Could not display article (missing XML object)') + "</div>";
 154                         }
 155                 } catch (e) {
 156                         exception_error("article_callback", e);
 157                 }
 158
 159                 var date = new Date();
 160                 last_article_view = date.getTime() / 1000;
 161
 162                 if (typeof correctPNG != 'undefined') {
 163                         correctPNG();
 164                 }
 165
 166                 if (_reload_feedlist_after_view) {
 167                         setTimeout('updateFeedList(false, false)', 50);
 168                         _reload_feedlist_after_view = false;
 169                 } else {
 170                         var counters = xmlhttp.responseXML.getElementsByTagName("counters")[0];
 171
 172                         if (counters) {
 173                                 debug("parsing piggybacked counters: " + counters);
 174                                 parse_counters(counters, false);
 175                         } else {
 176                                 debug("counters container not found in reply");
 177                         }
 178                 }
 179
 180                 notify("");
 181         }
 182 }
 183
 184 function view(id, feed_id, skip_history) {
 185
 186         try {
 187                 debug("loading article: " + id + "/" + feed_id);
 188
 189                 active_real_feed_id = feed_id;
 190
 191                 var cached_article = cache_find(id);
 192
 193                 debug("cache check result: " + (cached_article != false));
 194
 195                 enableHotkeys();
 196
 197                 //setActiveFeedId(feed_id);
 198
 199                 var query = "backend.php?op=view&id=" + param_escape(id) +
 200                         "&feed=" + param_escape(feed_id);
 201
 202                 var date = new Date();
 203
 204                 if (!xmlhttp_ready(xmlhttp) && last_article_view < date.getTime() / 1000 - 15) {
 205                         debug("<b>xmlhttp seems to be stuck at view, aborting</b>");
 206                         xmlhttp.abort();
 207                         if (is_safari()) {
 208                                 debug("trying alternative reset method for Safari");
 209                                 xmlhttp = Ajax.getTransport();
 210                         }
 211                 }
 212
 213                 if (xmlhttp_ready(xmlhttp)) {
 214
 215                         active_post_id = id;
 216
 217                         cleanSelected("headlinesList");
 218
 219                         var crow = document.getElementById("RROW-" + active_post_id);
 220
 221                         var article_is_unread = crow.className.match("Unread");
 222                         debug("article is unread: " + article_is_unread);
 223
 224                         crow.className = crow.className.replace("Unread", "");
 225
 226                         var upd_img_pic = document.getElementById("FUPDPIC-" + active_post_id);
 227
 228                         if (upd_img_pic) {
 229                                 upd_img_pic.src = "images/blank_icon.gif";
 230                         }
 231
 232                         selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
 233                         markHeadline(active_post_id);
 234
 235                         var neighbor_ids = getRelativePostIds(active_post_id);
 236
 237                         /* only request uncached articles */
 238
 239                         var cids_to_request = Array();
 240
 241                         for (var i = 0; i < neighbor_ids.length; i++) {
 242                                 if (!cache_check(neighbor_ids[i])) {
 243                                         cids_to_request.push(neighbor_ids[i]);
 244                                 }
 245                         }
 246
 247                         debug("additional ids: " + cids_to_request.toString());
 248
 249                         /* additional info for piggyback counters */
 250
 251                         if (tagsAreDisplayed()) {
 252                                 query = query + "&omode=lt";
 253                         } else {
 254                                 query = query + "&omode=flc";
 255                         }
 256
 257                         var date = new Date();
 258                         var timestamp = Math.round(date.getTime() / 1000);
 259                         query = query + "&ts=" + timestamp;
 260
 261                         query = query + "&cids=" + cids_to_request.toString();
 262
 263                         if (!cached_article) {
 264
 265                                 notify_progress("Loading, please wait...");
 266
 267                                 debug(query);
 268
 269                                 xmlhttp.open("GET", query, true);
 270                                 xmlhttp.onreadystatechange=article_callback;
 271                                 xmlhttp.send(null);
 272                         } else if (cached_article && article_is_unread) {
 273
 274                                 query = query + "&mode=prefetch";
 275
 276                                 debug(query);
 277
 278                                 xmlhttp.open("GET", query, true);
 279                                 xmlhttp.onreadystatechange=article_callback;
 280                                 xmlhttp.send(null);
 281
 282                                 render_article(cached_article);
 283
 284                         } else if (cached_article) {
 285
 286                                 query = query + "&mode=prefetch_old";
 287
 288                                 debug(query);
 289
 290                                 xmlhttp.open("GET", query, true);
 291                                 xmlhttp.onreadystatechange=article_callback;
 292                                 xmlhttp.send(null);
 293
 294                                 render_article(cached_article);
 295
 296                         }
 297
 298                         cache_expire();
 299
 300                 } else {
 301                         debug("xmlhttp busy (@view)");
 302                         printLockingError();
 303                 }
 304
 305         } catch (e) {
 306                 exception_error("view", e);
 307         }
 308 }
 309
 310 function tMark(id) {
 311         return toggleMark(id);
 312 }
 313
 314 function toggleMark(id) {
 315
 316         if (!xmlhttp_ready(xmlhttp_rpc)) {
 317                 printLockingError();
 318                 return;
 319         }
 320
 321         var query = "backend.php?op=rpc&id=" + id + "&subop=mark";
 322
 323         var mark_img = document.getElementById("FMPIC-" + id);
 324         var vfeedu = document.getElementById("FEEDU--1");
 325         var crow = document.getElementById("RROW-" + id);
 326
 327         if (mark_img.alt != "Reset mark") {
 328                 mark_img.src = "images/mark_set.png";
 329                 mark_img.alt = "Reset mark";
 330                 query = query + "&mark=1";
 331
 332                 if (vfeedu && crow.className.match("Unread")) {
 333                         vfeedu.innerHTML = (+vfeedu.innerHTML) + 1;
 334                 }
 335
 336         } else {
 337                 mark_img.src = "images/mark_unset.png";
 338                 mark_img.alt = "Set mark";
 339                 query = query + "&mark=0";
 340
 341                 if (vfeedu && crow.className.match("Unread")) {
 342                         vfeedu.innerHTML = (+vfeedu.innerHTML) - 1;
 343                 }
 344
 345         }
 346
 347         var vfeedctr = document.getElementById("FEEDCTR--1");
 348         var vfeedr = document.getElementById("FEEDR--1");
 349
 350         if (vfeedu && vfeedctr) {
 351                 if ((+vfeedu.innerHTML) > 0) {
 352                         if (crow.className.match("Unread") && !vfeedr.className.match("Unread")) {
 353                                 vfeedr.className = vfeedr.className + "Unread";
 354                                 vfeedctr.className = "odd";
 355                         }
 356                 } else {
 357                         vfeedctr.className = "invisible";
 358                         vfeedr.className = vfeedr.className.replace("Unread", "");
 359                 }
 360         }
 361
 362         debug("toggle starred for aid " + id);
 363
 364         new Ajax.Request(query);
 365
 366 }
 367
 368 function correctHeadlinesOffset(id) {
 369
 370         try {
 371
 372                 var hlist = document.getElementById("headlinesList");
 373                 var container = document.getElementById("headlinesInnerContainer");
 374                 var row = document.getElementById("RROW-" + id);
 375
 376                 var viewport = container.offsetHeight;
 377
 378                 var rel_offset_top = row.offsetTop - container.scrollTop;
 379                 var rel_offset_bottom = row.offsetTop + row.offsetHeight - container.scrollTop;
 380
 381                 debug("Rtop: " + rel_offset_top + " Rbtm: " + rel_offset_bottom);
 382                 debug("Vport: " + viewport);
 383
 384                 if (rel_offset_top <= 0 || rel_offset_top > viewport) {
 385                         container.scrollTop = row.offsetTop;
 386                 } else if (rel_offset_bottom > viewport) {
 387
 388                         /* doesn't properly work with Opera in some cases because
 389                                 Opera fucks up element scrolling */
 390
 391                         container.scrollTop = row.offsetTop + row.offsetHeight - viewport;
 392                 }
 393
 394         } catch (e) {
 395                 exception_error("correctHeadlinesOffset", e);
 396         }
 397
 398 }
 399
 400 function moveToPost(mode) {
 401
 402         // check for combined mode
 403         if (!document.getElementById("headlinesList"))
 404                 return;
 405
 406         var rows = getVisibleHeadlineIds();
 407
 408         var prev_id = false;
 409         var next_id = false;
 410
 411         if (!document.getElementById('RROW-' + active_post_id)) {
 412                 active_post_id = false;
 413         }
 414
 415         if (active_post_id == false) {
 416                 next_id = getFirstVisibleHeadlineId();
 417                 prev_id = getLastVisibleHeadlineId();
 418         } else {
 419                 for (var i = 0; i < rows.length; i++) {
 420                         if (rows[i] == active_post_id) {
 421                                 prev_id = rows[i-1];
 422                                 next_id = rows[i+1];
 423                         }
 424                 }
 425         }
 426
 427         if (mode == "next") {
 428                 if (next_id) {
 429                         correctHeadlinesOffset(next_id);
 430                         view(next_id, getActiveFeedId());
 431                 }
 432         }
 433
 434         if (mode == "prev") {
 435                 if (prev_id) {
 436                         correctHeadlinesOffset(prev_id);
 437                         view(prev_id, getActiveFeedId());
 438                 }
 439         }
 440 }
 441
 442 function toggleUnread(id, cmode) {
 443         try {
 444                 if (!xmlhttp_ready(xmlhttp_rpc)) {
 445                         printLockingError();
 446                         return;
 447                 }
 448
 449                 var row = document.getElementById("RROW-" + id);
 450                 if (row) {
 451                         var nc = row.className;
 452                         nc = nc.replace("Unread", "");
 453                         nc = nc.replace("Selected", "");
 454
 455                         if (row.className.match("Unread")) {
 456                                 row.className = nc;
 457                         } else {
 458                                 row.className = nc + "Unread";
 459                         }
 460
 461                         if (!cmode) cmode = 2;
 462
 463                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 464                                 param_escape(id) + "&cmode=" + param_escape(cmode);
 465
 466                         notify_progress("Loading, please wait...");
 467
 468                         xmlhttp_rpc.open("GET", query, true);
 469                         xmlhttp_rpc.onreadystatechange=all_counters_callback;
 470                         xmlhttp_rpc.send(null);
 471
 472                 }
 473
 474
 475         } catch (e) {
 476                 exception_error("toggleUnread", e);
 477         }
 478 }
 479
 480 function selectionToggleUnread(cdm_mode, set_state, callback_func, no_error) {
 481         try {
 482                 if (!xmlhttp_ready(xmlhttp_rpc)) {
 483                         printLockingError();
 484                         return;
 485                 }
 486
 487                 var rows;
 488
 489                 if (cdm_mode) {
 490                         rows = cdmGetSelectedArticles();
 491                 } else {
 492                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 493                 }
 494
 495                 if (rows.length == 0 && !no_error) {
 496                         alert(__("No articles are selected."));
 497                         return;
 498                 }
 499
 500                 for (i = 0; i < rows.length; i++) {
 501                         var row = document.getElementById("RROW-" + rows[i]);
 502                         if (row) {
 503                                 var nc = row.className;
 504                                 nc = nc.replace("Unread", "");
 505                                 nc = nc.replace("Selected", "");
 506
 507                                 if (row.className.match("Unread")) {
 508                                         row.className = nc + "Selected";
 509                                 } else {
 510                                         row.className = nc + "UnreadSelected";
 511                                 }
 512                         }
 513                 }
 514
 515                 if (rows.length > 0) {
 516
 517                         var cmode = "";
 518
 519                         if (set_state == undefined) {
 520                                 cmode = "2";
 521                         } else if (set_state == true) {
 522                                 cmode = "1";
 523                         } else if (set_state == false) {
 524                                 cmode = "0";
 525                         }
 526
 527                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 528                                 param_escape(rows.toString()) + "&cmode=" + cmode;
 529
 530                         _catchup_callback_func = callback_func;
 531
 532                         notify_progress("Loading, please wait...");
 533
 534                         xmlhttp_rpc.open("GET", query, true);
 535                         xmlhttp_rpc.onreadystatechange=catchup_callback;
 536                         xmlhttp_rpc.send(null);
 537
 538                 }
 539
 540         } catch (e) {
 541                 exception_error("selectionToggleUnread", e);
 542         }
 543 }
 544
 545 function selectionToggleMarked(cdm_mode) {
 546         try {
 547                 if (!xmlhttp_ready(xmlhttp_rpc)) {
 548                         printLockingError();
 549                         return;
 550                 }
 551
 552                 var rows;
 553
 554                 if (cdm_mode) {
 555                         rows = cdmGetSelectedArticles();
 556                 } else {
 557                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 558                 }
 559
 560                 if (rows.length == 0) {
 561                         alert(__("No articles are selected."));
 562                         return;
 563                 }
 564
 565                 for (i = 0; i < rows.length; i++) {
 566                         var row = document.getElementById("RROW-" + rows[i]);
 567                         var mark_img = document.getElementById("FMARKPIC-" + rows[i]);
 568
 569                         if (row && mark_img) {
 570
 571                                 if (mark_img.alt == "Set mark") {
 572                                         mark_img.src = "images/mark_set.png";
 573                                         mark_img.alt = "Reset mark";
 574                                         mark_img.setAttribute('onclick',
 575                                                 'javascript:toggleMark('+rows[i]+', false)');
 576
 577                                 } else {
 578                                         mark_img.src = "images/mark_unset.png";
 579                                         mark_img.alt = "Set mark";
 580                                         mark_img.setAttribute('onclick',
 581                                                 'javascript:toggleMark('+rows[i]+', true)');
 582                                 }
 583                         }
 584                 }
 585
 586                 if (rows.length > 0) {
 587
 588                         var query = "backend.php?op=rpc&subop=markSelected&ids=" +
 589                                 param_escape(rows.toString()) + "&cmode=2";
 590
 591                         xmlhttp_rpc.open("GET", query, true);
 592                         xmlhttp_rpc.onreadystatechange=all_counters_callback;
 593                         xmlhttp_rpc.send(null);
 594
 595                 }
 596
 597         } catch (e) {
 598                 exception_error("selectionToggleMarked", e);
 599         }
 600 }
 601
 602 function cdmGetSelectedArticles() {
 603         var sel_articles = new Array();
 604         var container = document.getElementById("headlinesInnerContainer");
 605
 606         for (i = 0; i < container.childNodes.length; i++) {
 607                 var child = container.childNodes[i];
 608
 609                 if (child.id.match("RROW-") && child.className.match("Selected")) {
 610                         var c_id = child.id.replace("RROW-", "");
 611                         sel_articles.push(c_id);
 612                 }
 613         }
 614
 615         return sel_articles;
 616 }
 617
 618 // mode = all,none,unread
 619 function cdmSelectArticles(mode) {
 620         var container = document.getElementById("headlinesInnerContainer");
 621
 622         for (i = 0; i < container.childNodes.length; i++) {
 623                 var child = container.childNodes[i];
 624
 625                 if (child.id.match("RROW-")) {
 626                         var aid = child.id.replace("RROW-", "");
 627
 628                         var cb = document.getElementById("RCHK-" + aid);
 629
 630                         if (mode == "all") {
 631                                 if (!child.className.match("Selected")) {
 632                                         child.className = child.className + "Selected";
 633                                         cb.checked = true;
 634                                 }
 635                         } else if (mode == "unread") {
 636                                 if (child.className.match("Unread") && !child.className.match("Selected")) {
 637                                         child.className = child.className + "Selected";
 638                                         cb.checked = true;
 639                                 }
 640                         } else {
 641                                 child.className = child.className.replace("Selected", "");
 642                                 cb.checked = false;
 643                         }
 644                 }
 645         }
 646 }
 647
 648 function catchupPage() {
 649
 650         if (document.getElementById("headlinesList")) {
 651                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true);
 652                 selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
 653                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
 654         } else {
 655                 cdmSelectArticles('all');
 656                 selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
 657                 cdmSelectArticles('none');
 658         }
 659 }
 660
 661 function labelFromSearch(search, search_mode, match_on, feed_id, is_cat) {
 662
 663         if (!xmlhttp_ready(xmlhttp_rpc)) {
 664                 printLockingError();
 665         }
 666
 667         var title = prompt("Please enter label title:", "");
 668
 669         if (title) {
 670
 671                 var query = "backend.php?op=labelFromSearch&search=" + param_escape(search) +
 672                         "&smode=" + param_escape(search_mode) + "&match=" + param_escape(match_on) +
 673                         "&feed=" + param_escape(feed_id) + "&is_cat=" + param_escape(is_cat) +
 674                         "&title=" + param_escape(title);
 675
 676                 debug("LFS: " + query);
 677
 678                 xmlhttp_rpc.open("GET", query, true);
 679                 xmlhttp_rpc.onreadystatechange=dlg_frefresh_callback;
 680                 xmlhttp_rpc.send(null);
 681         }
 682
 683 }
 684
 685 function editArticleTags(id, feed_id, cdm_enabled) {
 686         _tag_active_post_id = id;
 687         _tag_active_feed_id = feed_id;
 688         _tag_active_cdm = cdm_enabled;
 689
 690         cache_invalidate(id);
 691
 692         try {
 693                 _tag_cdm_scroll = document.getElementById("headlinesInnerContainer").scrollTop;
 694         } catch (e) { }
 695         displayDlg('editArticleTags', id);
 696 }
 697
 698
 699 function tag_saved_callback() {
 700         if (xmlhttp_rpc.readyState == 4) {
 701                 try {
 702                         debug("in tag_saved_callback");
 703
 704                         closeInfoBox();
 705                         notify("");
 706
 707                         if (tagsAreDisplayed()) {
 708                                 _reload_feedlist_after_view = true;
 709                         }
 710
 711                         if (!_tag_active_cdm) {
 712                                 if (active_post_id == _tag_active_post_id) {
 713                                         debug("reloading current article");
 714                                         view(_tag_active_post_id, _tag_active_feed_id);
 715                                 }
 716                         } else {
 717                                 debug("reloading current feed");
 718                                 viewCurrentFeed();
 719                         }
 720
 721                 } catch (e) {
 722                         exception_error("catchup_callback", e);
 723                 }
 724         }
 725 }
 726
 727 function editTagsSave() {
 728
 729         if (!xmlhttp_ready(xmlhttp_rpc)) {
 730                 printLockingError();
 731         }
 732
 733         notify_progress("Saving article tags...");
 734
 735         var form = document.forms["tag_edit_form"];
 736
 737         var query = Form.serialize("tag_edit_form");
 738
 739         query = "backend.php?op=rpc&subop=setArticleTags&" + query;
 740
 741         debug(query);
 742
 743         xmlhttp_rpc.open("GET", query, true);
 744         xmlhttp_rpc.onreadystatechange=tag_saved_callback;
 745         xmlhttp_rpc.send(null);
 746
 747 }
 748
 749 function editTagsInsert() {
 750         try {
 751
 752                 var form = document.forms["tag_edit_form"];
 753
 754                 var found_tags = form.found_tags;
 755                 var tags_str = form.tags_str;
 756
 757                 var tag = found_tags[found_tags.selectedIndex].value;
 758
 759                 if (tags_str.value.length > 0 &&
 760                                 tags_str.value.lastIndexOf(", ") != tags_str.value.length - 2) {
 761
 762                         tags_str.value = tags_str.value + ", ";
 763                 }
 764
 765                 tags_str.value = tags_str.value + tag + ", ";
 766
 767                 found_tags.selectedIndex = 0;
 768
 769         } catch (e) {
 770                 exception_error(e, "editTagsInsert");
 771         }
 772 }
 773
 774 function cdmWatchdog() {
 775
 776         try {
 777
 778                 var ctr = document.getElementById("headlinesInnerContainer");
 779
 780                 if (!ctr) return;
 781
 782                 var ids = new Array();
 783
 784                 var e = ctr.firstChild;
 785
 786                 while (e) {
 787                         if (e.className && e.className == "cdmArticleUnread" && e.id &&
 788                                         e.id.match("RROW-")) {
 789
 790                                 // article fits in viewport OR article is longer than viewport and
 791                                 // its bottom is visible
 792
 793                                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
 794                                                 ctr.scrollTop + ctr.offsetHeight) {
 795
 796 //                                      debug(e.id + " is visible " + e.offsetTop + "." +
 797 //                                              (e.offsetTop + e.offsetHeight) + " vs " + ctr.scrollTop + "." +
 798 //                                              (ctr.scrollTop + ctr.offsetHeight));
 799
 800                                         ids.push(e.id.replace("RROW-", ""));
 801
 802                                 } else if (e.offsetHeight > ctr.offsetHeight &&
 803                                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
 804                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
 805
 806                                         ids.push(e.id.replace("RROW-", ""));
 807
 808                                 }
 809
 810                                 // method 2: article bottom is visible and is in upper 1/2 of the viewport
 811
 812 /*                              if (e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
 813                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight/2) {
 814
 815                                         ids.push(e.id.replace("RROW-", ""));
 816
 817                                 } */
 818
 819                         }
 820
 821                         e = e.nextSibling;
 822                 }
 823
 824                 debug("cdmWatchdog, ids= " + ids.toString());
 825
 826                 if (ids.length > 0 && xmlhttp_ready(xmlhttp_rpc)) {
 827
 828                         for (var i = 0; i < ids.length; i++) {
 829                                 var e = document.getElementById("RROW-" + ids[i]);
 830                                 if (e) {
 831                                         e.className = e.className.replace("Unread", "");
 832                                 }
 833                         }
 834
 835                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 836                                 param_escape(ids.toString()) + "&cmode=0";
 837
 838                         xmlhttp_rpc.open("GET", query, true);
 839                         xmlhttp_rpc.onreadystatechange=all_counters_callback;
 840                         xmlhttp_rpc.send(null);
 841
 842                 }
 843
 844                 _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 4000);
 845
 846         } catch (e) {
 847                 exception_error(e, "cdmWatchdog");
 848         }
 849
 850 }
 851
 852
 853 function cache_inject(id, article) {
 854         if (!cache_check(id)) {
 855                 debug("cache_article: miss: " + id);
 856
 857                 var cache_obj = new Array();
 858
 859                 cache_obj["id"] = id;
 860                 cache_obj["data"] = article;
 861
 862                 article_cache.push(cache_obj);
 863
 864         } else {
 865                 debug("cache_article: hit: " + id);
 866         }
 867 }
 868
 869 function cache_find(id) {
 870         for (var i = 0; i < article_cache.length; i++) {
 871                 if (article_cache[i]["id"] == id) {
 872                         return article_cache[i]["data"];
 873                 }
 874         }
 875         return false;
 876 }
 877
 878 function cache_check(id) {
 879         for (var i = 0; i < article_cache.length; i++) {
 880                 if (article_cache[i]["id"] == id) {
 881                         return true;
 882                 }
 883         }
 884         return false;
 885 }
 886
 887 function cache_expire() {
 888         while (article_cache.length > 20) {
 889                 article_cache.shift();
 890         }
 891 }
 892
 893 function cache_invalidate(id) {
 894         var i = 0
 895
 896         try {
 897
 898                 while (i < article_cache.length) {
 899                         if (article_cache[i]["id"] == id) {
 900                                 debug("cache_invalidate: removed id " + id);
 901                                 article_cache.splice(i, 1);
 902                                 return true;
 903                         }
 904                         i++;
 905                 }
 906                 debug("cache_invalidate: id not found: " + id);
 907                 return false;
 908         } catch (e) {
 909                 exception_error("cache_invalidate", e);
 910         }
 911 }