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                         notify("");
  26                         all_counters_callback();
  27                         if (_catchup_callback_func) {
  28                                 setTimeout(_catchup_callback_func, 10);
  29                         }
  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                         if (feed_cur_page == 0) {
  42                                 debug("resetting headlines scrollTop");
  43                                 f.scrollTop = 0;
  44                         }
  45                 } catch (e) { };
  46
  47                 if (xmlhttp.responseXML) {
  48                         var headlines = xmlhttp.responseXML.getElementsByTagName("headlines")[0];
  49                         var counters = xmlhttp.responseXML.getElementsByTagName("counters")[0];
  50                         var articles = xmlhttp.responseXML.getElementsByTagName("article");
  51                         var runtime_info = xmlhttp.responseXML.getElementsByTagName("runtime-info");
  52
  53                         if (feed_cur_page == 0) {
  54                                 if (headlines) {
  55                                         f.innerHTML = headlines.firstChild.nodeValue;
  56                                 } else {
  57                                         debug("headlines_callback: returned no data");
  58                                 f.innerHTML = "<div class='whiteBox'>" + __('Could not update headlines (missing XML data)') + "</div>";
  59
  60                                 }
  61                         } else {
  62                                 if (headlines) {
  63                                         debug("adding some more headlines...");
  64
  65                                         var c = document.getElementById("headlinesList");
  66
  67                                         if (!c) {
  68                                                 c = document.getElementById("headlinesInnerContainer");
  69                                         }
  70
  71                                         c.innerHTML = c.innerHTML + headlines.firstChild.nodeValue;
  72                                 } else {
  73                                         debug("headlines_callback: returned no data");
  74                                         notify_error("Error while trying to load more headlines");
  75                                 }
  76
  77                         }
  78
  79                         if (articles) {
  80                                 for (var i = 0; i < articles.length; i++) {
  81                                         var a_id = articles[i].getAttribute("id");
  82                                         debug("found id: " + a_id);
  83                                         cache_inject(a_id, articles[i].firstChild.nodeValue);
  84                                 }
  85                         } else {
  86                                 debug("no cached articles received");
  87                         }
  88
  89                         if (counters) {
  90                                 debug("parsing piggybacked counters: " + counters);
  91                                 parse_counters(counters, false);
  92                         } else {
  93                                 debug("counters container not found in reply");
  94                         }
  95
  96                         if (runtime_info) {
  97                                 debug("parsing runtime info: " + runtime_info[0]);
  98                                 parse_runtime_info(runtime_info[0]);
  99                         } else {
 100                                 debug("counters container not found in reply");
 101                         }
 102
 103                 } else {
 104                         debug("headlines_callback: returned no XML object");
 105                         f.innerHTML = "<div class='whiteBox'>" + __('Could not update headlines (missing XML object)') + "</div>";
 106                 }
 107
 108                 if (typeof correctPNG != 'undefined') {
 109                         correctPNG();
 110                 }
 111
 112                 if (_cdm_wd_timeout) window.clearTimeout(_cdm_wd_timeout);
 113
 114                 if (!document.getElementById("headlinesList") &&
 115                                 getInitParam("cdm_auto_catchup") == 1) {
 116                         debug("starting CDM watchdog");
 117                         _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 5000);
 118                         _cdm_wd_vishist = new Array();
 119                 } else {
 120                         debug("not in CDM mode or watchdog disabled");
 121                 }
 122
 123                 if (_tag_cdm_scroll) {
 124                         try {
 125                                 document.getElementById("headlinesInnerContainer").scrollTop = _tag_cdm_scroll;
 126                                 _tag_cdm_scroll = false;
 127                                 debug("resetting headlinesInner scrollTop");
 128
 129                         } catch (e) { }
 130                 }
 131
 132                 notify("");
 133         }
 134 }
 135
 136 function render_article(article) {
 137         try {
 138                 var f = document.getElementById("content-frame");
 139                 try {
 140                         f.scrollTop = 0;
 141                 } catch (e) { };
 142
 143                 f.innerHTML = article;
 144
 145         } catch (e) {
 146                 exception_error("render_article", e);
 147         }
 148 }
 149
 150 function article_callback() {
 151         if (xmlhttp.readyState == 4) {
 152                 debug("article_callback");
 153
 154                 try {
 155                         if (xmlhttp.responseXML) {
 156                                 var reply = xmlhttp.responseXML.firstChild.firstChild;
 157
 158                                 var articles = xmlhttp.responseXML.getElementsByTagName("article");
 159
 160                                 for (var i = 0; i < articles.length; i++) {
 161                                         var a_id = articles[i].getAttribute("id");
 162
 163                                         debug("found id: " + a_id);
 164
 165                                         if (a_id == active_post_id) {
 166                                                 debug("active article, rendering...");
 167                                                 render_article(articles[i].firstChild.nodeValue);
 168                                         }
 169
 170                                         cache_inject(a_id, articles[i].firstChild.nodeValue);
 171                                 }
 172
 173                         } else {
 174                                 debug("article_callback: returned no XML object");
 175                                 var f = document.getElementById("content-frame");
 176                                 f.innerHTML = "<div class='whiteBox'>" + __('Could not display article (missing XML object)') + "</div>";
 177                         }
 178                 } catch (e) {
 179                         exception_error("article_callback", e);
 180                 }
 181
 182                 var date = new Date();
 183                 last_article_view = date.getTime() / 1000;
 184
 185                 if (typeof correctPNG != 'undefined') {
 186                         correctPNG();
 187                 }
 188
 189                 if (_reload_feedlist_after_view) {
 190                         setTimeout('updateFeedList(false, false)', 50);
 191                         _reload_feedlist_after_view = false;
 192                 } else {
 193                         var counters = xmlhttp.responseXML.getElementsByTagName("counters")[0];
 194
 195                         if (counters) {
 196                                 debug("parsing piggybacked counters: " + counters);
 197                                 parse_counters(counters, false);
 198                         } else {
 199                                 debug("counters container not found in reply");
 200                         }
 201                 }
 202
 203                 notify("");
 204         }
 205 }
 206
 207 function view(id, feed_id, skip_history) {
 208
 209         try {
 210                 debug("loading article: " + id + "/" + feed_id);
 211
 212                 active_real_feed_id = feed_id;
 213
 214                 var cached_article = cache_find(id);
 215
 216                 debug("cache check result: " + (cached_article != false));
 217
 218                 enableHotkeys();
 219
 220                 //setActiveFeedId(feed_id);
 221
 222                 var query = "backend.php?op=view&id=" + param_escape(id) +
 223                         "&feed=" + param_escape(feed_id);
 224
 225                 var date = new Date();
 226
 227                 if (!xmlhttp_ready(xmlhttp) && last_article_view < date.getTime() / 1000 - 15) {
 228                         debug("<b>xmlhttp seems to be stuck at view, aborting</b>");
 229                         xmlhttp.abort();
 230                         if (is_safari()) {
 231                                 debug("trying alternative reset method for Safari");
 232                                 xmlhttp = Ajax.getTransport();
 233                         }
 234                 }
 235
 236                 if (xmlhttp_ready(xmlhttp)) {
 237
 238                         active_post_id = id;
 239
 240                         cleanSelected("headlinesList");
 241
 242                         var crow = document.getElementById("RROW-" + active_post_id);
 243
 244                         var article_is_unread = crow.className.match("Unread");
 245                         debug("article is unread: " + article_is_unread);
 246
 247                         crow.className = crow.className.replace("Unread", "");
 248
 249                         var upd_img_pic = document.getElementById("FUPDPIC-" + active_post_id);
 250
 251                         if (upd_img_pic) {
 252                                 upd_img_pic.src = "images/blank_icon.gif";
 253                         }
 254
 255                         selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
 256                         markHeadline(active_post_id);
 257
 258                         var neighbor_ids = getRelativePostIds(active_post_id);
 259
 260                         /* only request uncached articles */
 261
 262                         var cids_to_request = Array();
 263
 264                         for (var i = 0; i < neighbor_ids.length; i++) {
 265                                 if (!cache_check(neighbor_ids[i])) {
 266                                         cids_to_request.push(neighbor_ids[i]);
 267                                 }
 268                         }
 269
 270                         debug("additional ids: " + cids_to_request.toString());
 271
 272                         /* additional info for piggyback counters */
 273
 274                         if (tagsAreDisplayed()) {
 275                                 query = query + "&omode=lt";
 276                         } else {
 277                                 query = query + "&omode=flc";
 278                         }
 279
 280                         var date = new Date();
 281                         var timestamp = Math.round(date.getTime() / 1000);
 282                         query = query + "&ts=" + timestamp;
 283
 284                         query = query + "&cids=" + cids_to_request.toString();
 285
 286                         if (!cached_article) {
 287
 288                                 notify_progress("Loading, please wait...");
 289
 290                                 debug(query);
 291
 292                                 xmlhttp.open("GET", query, true);
 293                                 xmlhttp.onreadystatechange=article_callback;
 294                                 xmlhttp.send(null);
 295                         } else if (cached_article && article_is_unread) {
 296
 297                                 query = query + "&mode=prefetch";
 298
 299                                 debug(query);
 300
 301                                 xmlhttp.open("GET", query, true);
 302                                 xmlhttp.onreadystatechange=article_callback;
 303                                 xmlhttp.send(null);
 304
 305                                 render_article(cached_article);
 306
 307                         } else if (cached_article) {
 308
 309                                 query = query + "&mode=prefetch_old";
 310
 311                                 debug(query);
 312
 313                                 xmlhttp.open("GET", query, true);
 314                                 xmlhttp.onreadystatechange=article_callback;
 315                                 xmlhttp.send(null);
 316
 317                                 render_article(cached_article);
 318
 319                         }
 320
 321                         cache_expire();
 322
 323                 } else {
 324                         debug("xmlhttp busy (@view)");
 325                         printLockingError();
 326                 }
 327
 328         } catch (e) {
 329                 exception_error("view", e);
 330         }
 331 }
 332
 333 function tMark(id) {
 334         return toggleMark(id);
 335 }
 336
 337 function tPub(id) {
 338         return togglePub(id);
 339 }
 340
 341
 342 function toggleMark(id) {
 343
 344         if (!xmlhttp_ready(xmlhttp_rpc)) {
 345                 printLockingError();
 346                 return;
 347         }
 348
 349         var query = "backend.php?op=rpc&id=" + id + "&subop=mark";
 350
 351         var mark_img = document.getElementById("FMPIC-" + id);
 352         var vfeedu = document.getElementById("FEEDU--1");
 353         var crow = document.getElementById("RROW-" + id);
 354
 355         if (mark_img.alt != "Reset mark") {
 356                 mark_img.src = "images/mark_set.png";
 357                 mark_img.alt = "Reset mark";
 358                 query = query + "&mark=1";
 359
 360                 if (vfeedu && crow.className.match("Unread")) {
 361                         vfeedu.innerHTML = (+vfeedu.innerHTML) + 1;
 362                 }
 363
 364         } else {
 365                 mark_img.src = "images/mark_unset.png";
 366                 mark_img.alt = "Set mark";
 367                 query = query + "&mark=0";
 368
 369                 if (vfeedu && crow.className.match("Unread")) {
 370                         vfeedu.innerHTML = (+vfeedu.innerHTML) - 1;
 371                 }
 372
 373         }
 374
 375         var vfeedctr = document.getElementById("FEEDCTR--1");
 376         var vfeedr = document.getElementById("FEEDR--1");
 377
 378         if (vfeedu && vfeedctr) {
 379                 if ((+vfeedu.innerHTML) > 0) {
 380                         if (crow.className.match("Unread") && !vfeedr.className.match("Unread")) {
 381                                 vfeedr.className = vfeedr.className + "Unread";
 382                                 vfeedctr.className = "odd";
 383                         }
 384                 } else {
 385                         vfeedctr.className = "invisible";
 386                         vfeedr.className = vfeedr.className.replace("Unread", "");
 387                 }
 388         }
 389
 390         debug("toggle starred for aid " + id);
 391
 392         new Ajax.Request(query);
 393
 394 }
 395
 396 function togglePub(id) {
 397
 398         if (!xmlhttp_ready(xmlhttp_rpc)) {
 399                 printLockingError();
 400                 return;
 401         }
 402
 403         var query = "backend.php?op=rpc&id=" + id + "&subop=publ";
 404
 405         var mark_img = document.getElementById("FPPIC-" + id);
 406         var vfeedu = document.getElementById("FEEDU--2");
 407         var crow = document.getElementById("RROW-" + id);
 408
 409         if (mark_img.alt != "Unpublish") {
 410                 mark_img.src = "images/pub_set.png";
 411                 mark_img.alt = "Unpublish";
 412                 query = query + "&pub=1";
 413
 414                 if (vfeedu && crow.className.match("Unread")) {
 415                         vfeedu.innerHTML = (+vfeedu.innerHTML) + 1;
 416                 }
 417
 418         } else {
 419                 mark_img.src = "images/pub_unset.png";
 420                 mark_img.alt = "Publish";
 421                 query = query + "&pub=0";
 422
 423                 if (vfeedu && crow.className.match("Unread")) {
 424                         vfeedu.innerHTML = (+vfeedu.innerHTML) - 1;
 425                 }
 426
 427         }
 428
 429         var vfeedctr = document.getElementById("FEEDCTR--2");
 430         var vfeedr = document.getElementById("FEEDR--2");
 431
 432         if (vfeedu && vfeedctr) {
 433                 if ((+vfeedu.innerHTML) > 0) {
 434                         if (crow.className.match("Unread") && !vfeedr.className.match("Unread")) {
 435                                 vfeedr.className = vfeedr.className + "Unread";
 436                                 vfeedctr.className = "odd";
 437                         }
 438                 } else {
 439                         vfeedctr.className = "invisible";
 440                         vfeedr.className = vfeedr.className.replace("Unread", "");
 441                 }
 442         }
 443
 444         debug("toggle published for aid " + id);
 445
 446         new Ajax.Request(query);
 447
 448 }
 449
 450 function correctHeadlinesOffset(id) {
 451
 452         try {
 453
 454                 var hlist = document.getElementById("headlinesList");
 455                 var container = document.getElementById("headlinesInnerContainer");
 456                 var row = document.getElementById("RROW-" + id);
 457
 458                 var viewport = container.offsetHeight;
 459
 460                 var rel_offset_top = row.offsetTop - container.scrollTop;
 461                 var rel_offset_bottom = row.offsetTop + row.offsetHeight - container.scrollTop;
 462
 463                 debug("Rtop: " + rel_offset_top + " Rbtm: " + rel_offset_bottom);
 464                 debug("Vport: " + viewport);
 465
 466                 if (rel_offset_top <= 0 || rel_offset_top > viewport) {
 467                         container.scrollTop = row.offsetTop;
 468                 } else if (rel_offset_bottom > viewport) {
 469
 470                         /* doesn't properly work with Opera in some cases because
 471                                 Opera fucks up element scrolling */
 472
 473                         container.scrollTop = row.offsetTop + row.offsetHeight - viewport;
 474                 }
 475
 476         } catch (e) {
 477                 exception_error("correctHeadlinesOffset", e);
 478         }
 479
 480 }
 481
 482 function moveToPost(mode) {
 483
 484         // check for combined mode
 485         if (!document.getElementById("headlinesList"))
 486                 return;
 487
 488         var rows = getVisibleHeadlineIds();
 489
 490         var prev_id = false;
 491         var next_id = false;
 492
 493         if (!document.getElementById('RROW-' + active_post_id)) {
 494                 active_post_id = false;
 495         }
 496
 497         if (active_post_id == false) {
 498                 next_id = getFirstVisibleHeadlineId();
 499                 prev_id = getLastVisibleHeadlineId();
 500         } else {
 501                 for (var i = 0; i < rows.length; i++) {
 502                         if (rows[i] == active_post_id) {
 503                                 prev_id = rows[i-1];
 504                                 next_id = rows[i+1];
 505                         }
 506                 }
 507         }
 508
 509         if (mode == "next") {
 510                 if (next_id) {
 511                         correctHeadlinesOffset(next_id);
 512                         view(next_id, getActiveFeedId());
 513                 }
 514         }
 515
 516         if (mode == "prev") {
 517                 if (prev_id) {
 518                         correctHeadlinesOffset(prev_id);
 519                         view(prev_id, getActiveFeedId());
 520                 }
 521         }
 522 }
 523
 524 function toggleUnread(id, cmode) {
 525         try {
 526                 if (!xmlhttp_ready(xmlhttp_rpc)) {
 527                         printLockingError();
 528                         return;
 529                 }
 530
 531                 var row = document.getElementById("RROW-" + id);
 532                 if (row) {
 533                         var nc = row.className;
 534                         nc = nc.replace("Unread", "");
 535                         nc = nc.replace("Selected", "");
 536
 537                         if (row.className.match("Unread")) {
 538                                 row.className = nc;
 539                         } else {
 540                                 row.className = nc + "Unread";
 541                         }
 542
 543                         if (!cmode) cmode = 2;
 544
 545                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 546                                 param_escape(id) + "&cmode=" + param_escape(cmode);
 547
 548                         notify_progress("Loading, please wait...");
 549
 550                         xmlhttp_rpc.open("GET", query, true);
 551                         xmlhttp_rpc.onreadystatechange=all_counters_callback;
 552                         xmlhttp_rpc.send(null);
 553
 554                 }
 555
 556
 557         } catch (e) {
 558                 exception_error("toggleUnread", e);
 559         }
 560 }
 561
 562 function selectionToggleUnread(cdm_mode, set_state, callback_func, no_error) {
 563         try {
 564                 if (!xmlhttp_ready(xmlhttp_rpc)) {
 565                         printLockingError();
 566                         return;
 567                 }
 568
 569                 var rows;
 570
 571                 if (cdm_mode) {
 572                         rows = cdmGetSelectedArticles();
 573                 } else {
 574                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 575                 }
 576
 577                 if (rows.length == 0 && !no_error) {
 578                         alert(__("No articles are selected."));
 579                         return;
 580                 }
 581
 582                 for (i = 0; i < rows.length; i++) {
 583                         var row = document.getElementById("RROW-" + rows[i]);
 584                         if (row) {
 585                                 var nc = row.className;
 586                                 nc = nc.replace("Unread", "");
 587                                 nc = nc.replace("Selected", "");
 588
 589                                 if (row.className.match("Unread")) {
 590                                         row.className = nc + "Selected";
 591                                 } else {
 592                                         row.className = nc + "UnreadSelected";
 593                                 }
 594                         }
 595                 }
 596
 597                 if (rows.length > 0) {
 598
 599                         var cmode = "";
 600
 601                         if (set_state == undefined) {
 602                                 cmode = "2";
 603                         } else if (set_state == true) {
 604                                 cmode = "1";
 605                         } else if (set_state == false) {
 606                                 cmode = "0";
 607                         }
 608
 609                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 610                                 param_escape(rows.toString()) + "&cmode=" + cmode;
 611
 612                         _catchup_callback_func = callback_func;
 613
 614                         notify_progress("Loading, please wait...");
 615
 616                         xmlhttp_rpc.open("GET", query, true);
 617                         xmlhttp_rpc.onreadystatechange=catchup_callback;
 618                         xmlhttp_rpc.send(null);
 619
 620                 }
 621
 622         } catch (e) {
 623                 exception_error("selectionToggleUnread", e);
 624         }
 625 }
 626
 627 function selectionToggleMarked(cdm_mode) {
 628         try {
 629                 if (!xmlhttp_ready(xmlhttp_rpc)) {
 630                         printLockingError();
 631                         return;
 632                 }
 633
 634                 var rows;
 635
 636                 if (cdm_mode) {
 637                         rows = cdmGetSelectedArticles();
 638                 } else {
 639                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 640                 }
 641
 642                 if (rows.length == 0) {
 643                         alert(__("No articles are selected."));
 644                         return;
 645                 }
 646
 647                 for (i = 0; i < rows.length; i++) {
 648                         var row = document.getElementById("RROW-" + rows[i]);
 649                         var mark_img = document.getElementById("FMPIC-" + rows[i]);
 650
 651                         if (row && mark_img) {
 652
 653                                 if (mark_img.alt == "Set mark") {
 654                                         mark_img.src = "images/mark_set.png";
 655                                         mark_img.alt = "Reset mark";
 656                                         mark_img.setAttribute('onclick',
 657                                                 'javascript:toggleMark('+rows[i]+', false)');
 658
 659                                 } else {
 660                                         mark_img.src = "images/mark_unset.png";
 661                                         mark_img.alt = "Set mark";
 662                                         mark_img.setAttribute('onclick',
 663                                                 'javascript:toggleMark('+rows[i]+', true)');
 664                                 }
 665                         }
 666                 }
 667
 668                 if (rows.length > 0) {
 669
 670                         var query = "backend.php?op=rpc&subop=markSelected&ids=" +
 671                                 param_escape(rows.toString()) + "&cmode=2";
 672
 673                         xmlhttp_rpc.open("GET", query, true);
 674                         xmlhttp_rpc.onreadystatechange=all_counters_callback;
 675                         xmlhttp_rpc.send(null);
 676
 677                 }
 678
 679         } catch (e) {
 680                 exception_error("selectionToggleMarked", e);
 681         }
 682 }
 683
 684 function selectionTogglePublished(cdm_mode) {
 685         try {
 686                 if (!xmlhttp_ready(xmlhttp_rpc)) {
 687                         printLockingError();
 688                         return;
 689                 }
 690
 691                 var rows;
 692
 693                 if (cdm_mode) {
 694                         rows = cdmGetSelectedArticles();
 695                 } else {
 696                         rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
 697                 }
 698
 699                 if (rows.length == 0) {
 700                         alert(__("No articles are selected."));
 701                         return;
 702                 }
 703
 704                 for (i = 0; i < rows.length; i++) {
 705                         var row = document.getElementById("RROW-" + rows[i]);
 706                         var mark_img = document.getElementById("FPPIC-" + rows[i]);
 707
 708                         if (row && mark_img) {
 709
 710                                 if (mark_img.alt == "Publish") {
 711                                         mark_img.src = "images/pub_set.png";
 712                                         mark_img.alt = "Unpublish";
 713                                         mark_img.setAttribute('onclick',
 714                                                 'javascript:togglePub('+rows[i]+', false)');
 715
 716                                 } else {
 717                                         mark_img.src = "images/pub_unset.png";
 718                                         mark_img.alt = "Publish";
 719                                         mark_img.setAttribute('onclick',
 720                                                 'javascript:togglePub('+rows[i]+', true)');
 721                                 }
 722                         }
 723                 }
 724
 725                 if (rows.length > 0) {
 726
 727                         var query = "backend.php?op=rpc&subop=publishSelected&ids=" +
 728                                 param_escape(rows.toString()) + "&cmode=2";
 729
 730                         xmlhttp_rpc.open("GET", query, true);
 731                         xmlhttp_rpc.onreadystatechange=all_counters_callback;
 732                         xmlhttp_rpc.send(null);
 733
 734                 }
 735
 736         } catch (e) {
 737                 exception_error("selectionToggleMarked", e);
 738         }
 739 }
 740
 741 function cdmGetSelectedArticles() {
 742         var sel_articles = new Array();
 743         var container = document.getElementById("headlinesInnerContainer");
 744
 745         for (i = 0; i < container.childNodes.length; i++) {
 746                 var child = container.childNodes[i];
 747
 748                 if (child.id.match("RROW-") && child.className.match("Selected")) {
 749                         var c_id = child.id.replace("RROW-", "");
 750                         sel_articles.push(c_id);
 751                 }
 752         }
 753
 754         return sel_articles;
 755 }
 756
 757 // mode = all,none,unread
 758 function cdmSelectArticles(mode) {
 759         var container = document.getElementById("headlinesInnerContainer");
 760
 761         for (i = 0; i < container.childNodes.length; i++) {
 762                 var child = container.childNodes[i];
 763
 764                 if (child.id.match("RROW-")) {
 765                         var aid = child.id.replace("RROW-", "");
 766
 767                         var cb = document.getElementById("RCHK-" + aid);
 768
 769                         if (mode == "all") {
 770                                 if (!child.className.match("Selected")) {
 771                                         child.className = child.className + "Selected";
 772                                         cb.checked = true;
 773                                 }
 774                         } else if (mode == "unread") {
 775                                 if (child.className.match("Unread") && !child.className.match("Selected")) {
 776                                         child.className = child.className + "Selected";
 777                                         cb.checked = true;
 778                                 }
 779                         } else {
 780                                 child.className = child.className.replace("Selected", "");
 781                                 cb.checked = false;
 782                         }
 783                 }
 784         }
 785 }
 786
 787 function catchupPage() {
 788
 789         var fn = getFeedName(getActiveFeedId(), active_feed_is_cat);
 790
 791         var str = "Mark all visible articles in " + fn + " as read?";
 792
 793         if (getInitParam("confirm_feed_catchup") == 1 && !confirm(str)) {
 794                 return;
 795         }
 796
 797         if (document.getElementById("headlinesList")) {
 798                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true);
 799                 selectionToggleUnread(false, false, 'viewCurrentFeed()', true);
 800                 selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false);
 801         } else {
 802                 cdmSelectArticles('all');
 803                 selectionToggleUnread(true, false, 'viewCurrentFeed()', true)
 804                 cdmSelectArticles('none');
 805         }
 806 }
 807
 808 function labelFromSearch(search, search_mode, match_on, feed_id, is_cat) {
 809
 810         if (!xmlhttp_ready(xmlhttp_rpc)) {
 811                 printLockingError();
 812         }
 813
 814         var title = prompt("Please enter label title:", "");
 815
 816         if (title) {
 817
 818                 var query = "backend.php?op=labelFromSearch&search=" + param_escape(search) +
 819                         "&smode=" + param_escape(search_mode) + "&match=" + param_escape(match_on) +
 820                         "&feed=" + param_escape(feed_id) + "&is_cat=" + param_escape(is_cat) +
 821                         "&title=" + param_escape(title);
 822
 823                 debug("LFS: " + query);
 824
 825                 xmlhttp_rpc.open("GET", query, true);
 826                 xmlhttp_rpc.onreadystatechange=dlg_frefresh_callback;
 827                 xmlhttp_rpc.send(null);
 828         }
 829
 830 }
 831
 832 function editArticleTags(id, feed_id, cdm_enabled) {
 833         _tag_active_post_id = id;
 834         _tag_active_feed_id = feed_id;
 835         _tag_active_cdm = cdm_enabled;
 836
 837         cache_invalidate(id);
 838
 839         try {
 840                 _tag_cdm_scroll = document.getElementById("headlinesInnerContainer").scrollTop;
 841         } catch (e) { }
 842         displayDlg('editArticleTags', id);
 843 }
 844
 845
 846 function tag_saved_callback() {
 847         if (xmlhttp_rpc.readyState == 4) {
 848                 try {
 849                         debug("in tag_saved_callback");
 850
 851                         closeInfoBox();
 852                         notify("");
 853
 854                         if (tagsAreDisplayed()) {
 855                                 _reload_feedlist_after_view = true;
 856                         }
 857
 858                         if (!_tag_active_cdm) {
 859                                 if (active_post_id == _tag_active_post_id) {
 860                                         debug("reloading current article");
 861                                         view(_tag_active_post_id, _tag_active_feed_id);
 862                                 }
 863                         } else {
 864                                 debug("reloading current feed");
 865                                 viewCurrentFeed();
 866                         }
 867
 868                 } catch (e) {
 869                         exception_error("catchup_callback", e);
 870                 }
 871         }
 872 }
 873
 874 function editTagsSave() {
 875
 876         if (!xmlhttp_ready(xmlhttp_rpc)) {
 877                 printLockingError();
 878         }
 879
 880         notify_progress("Saving article tags...");
 881
 882         var form = document.forms["tag_edit_form"];
 883
 884         var query = Form.serialize("tag_edit_form");
 885
 886         query = "backend.php?op=rpc&subop=setArticleTags&" + query;
 887
 888         debug(query);
 889
 890         xmlhttp_rpc.open("GET", query, true);
 891         xmlhttp_rpc.onreadystatechange=tag_saved_callback;
 892         xmlhttp_rpc.send(null);
 893
 894 }
 895
 896 function editTagsInsert() {
 897         try {
 898
 899                 var form = document.forms["tag_edit_form"];
 900
 901                 var found_tags = form.found_tags;
 902                 var tags_str = form.tags_str;
 903
 904                 var tag = found_tags[found_tags.selectedIndex].value;
 905
 906                 if (tags_str.value.length > 0 &&
 907                                 tags_str.value.lastIndexOf(", ") != tags_str.value.length - 2) {
 908
 909                         tags_str.value = tags_str.value + ", ";
 910                 }
 911
 912                 tags_str.value = tags_str.value + tag + ", ";
 913
 914                 found_tags.selectedIndex = 0;
 915
 916         } catch (e) {
 917                 exception_error(e, "editTagsInsert");
 918         }
 919 }
 920
 921 function cdmWatchdog() {
 922
 923         try {
 924
 925                 var ctr = document.getElementById("headlinesInnerContainer");
 926
 927                 if (!ctr) return;
 928
 929                 var ids = new Array();
 930
 931                 var e = ctr.firstChild;
 932
 933                 while (e) {
 934                         if (e.className && e.className == "cdmArticleUnread" && e.id &&
 935                                         e.id.match("RROW-")) {
 936
 937                                 // article fits in viewport OR article is longer than viewport and
 938                                 // its bottom is visible
 939
 940                                 if (ctr.scrollTop <= e.offsetTop && e.offsetTop + e.offsetHeight <=
 941                                                 ctr.scrollTop + ctr.offsetHeight) {
 942
 943 //                                      debug(e.id + " is visible " + e.offsetTop + "." +
 944 //                                              (e.offsetTop + e.offsetHeight) + " vs " + ctr.scrollTop + "." +
 945 //                                              (ctr.scrollTop + ctr.offsetHeight));
 946
 947                                         ids.push(e.id.replace("RROW-", ""));
 948
 949                                 } else if (e.offsetHeight > ctr.offsetHeight &&
 950                                                 e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
 951                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight) {
 952
 953                                         ids.push(e.id.replace("RROW-", ""));
 954
 955                                 }
 956
 957                                 // method 2: article bottom is visible and is in upper 1/2 of the viewport
 958
 959 /*                              if (e.offsetTop + e.offsetHeight >= ctr.scrollTop &&
 960                                                 e.offsetTop + e.offsetHeight <= ctr.scrollTop + ctr.offsetHeight/2) {
 961
 962                                         ids.push(e.id.replace("RROW-", ""));
 963
 964                                 } */
 965
 966                         }
 967
 968                         e = e.nextSibling;
 969                 }
 970
 971                 debug("cdmWatchdog, ids= " + ids.toString());
 972
 973                 if (ids.length > 0 && xmlhttp_ready(xmlhttp_rpc)) {
 974
 975                         for (var i = 0; i < ids.length; i++) {
 976                                 var e = document.getElementById("RROW-" + ids[i]);
 977                                 if (e) {
 978                                         e.className = e.className.replace("Unread", "");
 979                                 }
 980                         }
 981
 982                         var query = "backend.php?op=rpc&subop=catchupSelected&ids=" +
 983                                 param_escape(ids.toString()) + "&cmode=0";
 984
 985                         xmlhttp_rpc.open("GET", query, true);
 986                         xmlhttp_rpc.onreadystatechange=all_counters_callback;
 987                         xmlhttp_rpc.send(null);
 988
 989                 }
 990
 991                 _cdm_wd_timeout = window.setTimeout("cdmWatchdog()", 4000);
 992
 993         } catch (e) {
 994                 exception_error(e, "cdmWatchdog");
 995         }
 996
 997 }
 998
 999
1000 function cache_inject(id, article) {
1001         if (!cache_check(id)) {
1002                 debug("cache_article: miss: " + id);
1003
1004                 var cache_obj = new Array();
1005
1006                 cache_obj["id"] = id;
1007                 cache_obj["data"] = article;
1008
1009                 article_cache.push(cache_obj);
1010
1011         } else {
1012                 debug("cache_article: hit: " + id);
1013         }
1014 }
1015
1016 function cache_find(id) {
1017         for (var i = 0; i < article_cache.length; i++) {
1018                 if (article_cache[i]["id"] == id) {
1019                         return article_cache[i]["data"];
1020                 }
1021         }
1022         return false;
1023 }
1024
1025 function cache_check(id) {
1026         for (var i = 0; i < article_cache.length; i++) {
1027                 if (article_cache[i]["id"] == id) {
1028                         return true;
1029                 }
1030         }
1031         return false;
1032 }
1033
1034 function cache_expire() {
1035         while (article_cache.length > 20) {
1036                 article_cache.shift();
1037         }
1038 }
1039
1040 function cache_invalidate(id) {
1041         var i = 0
1042
1043         try {
1044
1045                 while (i < article_cache.length) {
1046                         if (article_cache[i]["id"] == id) {
1047                                 debug("cache_invalidate: removed id " + id);
1048                                 article_cache.splice(i, 1);
1049                                 return true;
1050                         }
1051                         i++;
1052                 }
1053                 debug("cache_invalidate: id not found: " + id);
1054                 return false;
1055         } catch (e) {
1056                 exception_error("cache_invalidate", e);
1057         }
1058 }
1059
1060 function getActiveArticleId() {
1061         return active_post_id;
1062 }
1063
1064 function cdmMouseIn(elem) {
1065         try {
1066                 if (elem.id && elem.id.match("RROW-")) {
1067                         var id = elem.id.replace("RROW-", "");
1068                         active_post_id = id;
1069                 }
1070         } catch (e) {
1071                 exception_error("cdmMouseIn", e);
1072         }
1073
1074 }
1075
1076 function cdmMouseOut(elem) {
1077         active_post_id = false;
1078 }
1079
1080 function headlines_scroll_handler() {
1081         try {
1082
1083                 var e = document.getElementById("headlinesInnerContainer");
1084
1085                 if (e.scrollTop + e.offsetHeight > e.scrollHeight - 300) {
1086                         debug("more cowbell!");
1087
1088                         viewNextFeedPage();
1089                 }
1090
1091         } catch (e) {
1092                 exception_error("headlines_scroll_handler", e);
1093         }
1094 }