functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 0;
   4 var sanity_check_done = false;
   5
   6 /* add method to remove element from array */
   7
   8 Array.prototype.remove = function(s) {
   9         for (var i=0; i < this.length; i++) {
  10                 if (s == this[i]) this.splice(i, 1);
  11         }
  12 }
  13
  14 /* create console.log if it doesn't exist */
  15
  16 if (!window.console) console = {};
  17 console.log = console.log || function(msg) { };
  18 console.warn = console.warn || function(msg) { };
  19 console.error = console.error || function(msg) { };
  20
  21 function exception_error(location, e, ext_info) {
  22         var msg = format_exception_error(location, e);
  23
  24         if (!ext_info) ext_info = false;
  25
  26         disableHotkeys();
  27
  28         try {
  29
  30                 var ebc = $("xebContent");
  31
  32                 if (ebc) {
  33
  34                         Element.show("dialog_overlay");
  35                         Element.show("errorBoxShadow");
  36
  37                         if (ext_info) {
  38                                 if (ext_info.responseText) {
  39                                         ext_info = ext_info.responseText;
  40                                 }
  41                         }
  42
  43                         ebc.innerHTML =
  44                                 "<div><b>Error message:</b></div>" +
  45                                 "<pre>" + msg + "</pre>";
  46
  47                         if (ext_info) {
  48                                 ebc.innerHTML += "<div><b>Additional information:</b></div>" +
  49                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  50                         }
  51
  52                         ebc.innerHTML += "<div><b>Stack trace:</b></div>" +
  53                                 "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  54
  55                 } else {
  56                         alert(msg);
  57                 }
  58
  59         } catch (e) {
  60                 alert(msg);
  61
  62         }
  63
  64 }
  65
  66 function format_exception_error(location, e) {
  67         var msg;
  68
  69         if (e.fileName) {
  70                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  71
  72                 msg = "Exception: " + e.name + ", " + e.message +
  73                         "\nFunction: " + location + "()" +
  74                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  75
  76         } else if (e.description) {
  77                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  78         } else {
  79                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  80         }
  81
  82         console.error("EXCEPTION: " + msg);
  83
  84         return msg;
  85 }
  86
  87
  88 function disableHotkeys() {
  89         hotkeys_enabled = false;
  90 }
  91
  92 function enableHotkeys() {
  93         hotkeys_enabled = true;
  94 }
  95
  96 function param_escape(arg) {
  97         if (typeof encodeURIComponent != 'undefined')
  98                 return encodeURIComponent(arg);
  99         else
 100                 return escape(arg);
 101 }
 102
 103 function param_unescape(arg) {
 104         if (typeof decodeURIComponent != 'undefined')
 105                 return decodeURIComponent(arg);
 106         else
 107                 return unescape(arg);
 108 }
 109
 110 function delay(gap) {
 111         var then,now;
 112         then=new Date().getTime();
 113         now=then;
 114         while((now-then)<gap) {
 115                 now=new Date().getTime();
 116         }
 117 }
 118
 119 var notify_hide_timerid = false;
 120
 121 function hide_notify() {
 122         var n = $("notify");
 123         if (n) {
 124                 n.style.display = "none";
 125         }
 126 }
 127
 128 function notify_silent_next() {
 129         notify_silent = true;
 130 }
 131
 132 function notify_real(msg, no_hide, n_type) {
 133
 134         if (notify_silent) {
 135                 notify_silent = false;
 136                 return;
 137         }
 138
 139         var n = $("notify");
 140         var nb = $("notify_body");
 141
 142         if (!n || !nb) return;
 143
 144         if (notify_hide_timerid) {
 145                 window.clearTimeout(notify_hide_timerid);
 146         }
 147
 148         if (msg == "") {
 149                 if (n.style.display == "block") {
 150                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 151                 }
 152                 return;
 153         } else {
 154                 n.style.display = "block";
 155         }
 156
 157         /* types:
 158
 159                 1 - generic
 160                 2 - progress
 161                 3 - error
 162                 4 - info
 163
 164         */
 165
 166         if (typeof __ != 'undefined') {
 167                 msg = __(msg);
 168         }
 169
 170         if (n_type == 1) {
 171                 n.className = "notify";
 172         } else if (n_type == 2) {
 173                 n.className = "notifyProgress";
 174                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 175         } else if (n_type == 3) {
 176                 n.className = "notifyError";
 177                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 178         } else if (n_type == 4) {
 179                 n.className = "notifyInfo";
 180                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 181         }
 182
 183 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 184
 185         nb.innerHTML = msg;
 186
 187         if (!no_hide) {
 188                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 189         }
 190 }
 191
 192 function notify(msg, no_hide) {
 193         notify_real(msg, no_hide, 1);
 194 }
 195
 196 function notify_progress(msg, no_hide) {
 197         notify_real(msg, no_hide, 2);
 198 }
 199
 200 function notify_error(msg, no_hide) {
 201         notify_real(msg, no_hide, 3);
 202
 203 }
 204
 205 function notify_info(msg, no_hide) {
 206         notify_real(msg, no_hide, 4);
 207 }
 208
 209 function printLockingError() {
 210         notify_info("Please wait until operation finishes.");
 211 }
 212
 213 function cleanSelected(element) {
 214         var content = $(element);
 215
 216         for (i = 0; i < content.rows.length; i++) {
 217                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 218         }
 219 }
 220
 221 function getVisibleUnreadHeadlines() {
 222         var content = $("headlinesList");
 223
 224         var rows = new Array();
 225
 226         if (!content) return rows;
 227
 228         for (i = 0; i < content.rows.length; i++) {
 229                 var row_id = content.rows[i].id.replace("RROW-", "");
 230                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 231                                 rows.push(row_id);
 232                 }
 233         }
 234         return rows;
 235 }
 236
 237 function getVisibleHeadlineIds() {
 238
 239         var content = $("headlinesList");
 240
 241         var rows = new Array();
 242
 243         if (!content) return rows;
 244
 245         for (i = 0; i < content.rows.length; i++) {
 246                 var row_id = content.rows[i].id.replace("RROW-", "");
 247                 if (row_id.length > 0) {
 248                                 rows.push(row_id);
 249                 }
 250         }
 251         return rows;
 252 }
 253
 254 function getFirstVisibleHeadlineId() {
 255         if (isCdmMode()) {
 256                 var rows = cdmGetVisibleArticles();
 257                 return rows[0];
 258         } else {
 259                 var rows = getVisibleHeadlineIds();
 260                 return rows[0];
 261         }
 262 }
 263
 264 function getLastVisibleHeadlineId() {
 265         if (isCdmMode()) {
 266                 var rows = cdmGetVisibleArticles();
 267                 return rows[rows.length-1];
 268         } else {
 269                 var rows = getVisibleHeadlineIds();
 270                 return rows[rows.length-1];
 271         }
 272 }
 273
 274 function markHeadline(id) {
 275         var row = $("RROW-" + id);
 276         if (row) {
 277                 var is_active = false;
 278
 279                 if (row.className.match("Active")) {
 280                         is_active = true;
 281                 }
 282                 row.className = row.className.replace("Selected", "");
 283                 row.className = row.className.replace("Active", "");
 284                 row.className = row.className.replace("Insensitive", "");
 285
 286                 if (is_active) {
 287                         row.className = row.className = "Active";
 288                 }
 289
 290                 var check = $("RCHK-" + id);
 291
 292                 if (check) {
 293                         check.checked = true;
 294                 }
 295
 296                 row.className = row.className + "Selected";
 297
 298         }
 299 }
 300
 301 function getFeedIds() {
 302         var content = $("feedsList");
 303
 304         var rows = new Array();
 305
 306         for (i = 0; i < content.rows.length; i++) {
 307                 var id = content.rows[i].id.replace("FEEDR-", "");
 308                 if (id.length > 0) {
 309                         rows.push(id);
 310                 }
 311         }
 312
 313         return rows;
 314 }
 315
 316 function setCookie(name, value, lifetime, path, domain, secure) {
 317
 318         var d = false;
 319
 320         if (lifetime) {
 321                 d = new Date();
 322                 d.setTime(d.getTime() + (lifetime * 1000));
 323         }
 324
 325         console.log("setCookie: " + name + " => " + value + ": " + d);
 326
 327         int_setCookie(name, value, d, path, domain, secure);
 328
 329 }
 330
 331 function int_setCookie(name, value, expires, path, domain, secure) {
 332         document.cookie= name + "=" + escape(value) +
 333                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 334                 ((path) ? "; path=" + path : "") +
 335                 ((domain) ? "; domain=" + domain : "") +
 336                 ((secure) ? "; secure" : "");
 337 }
 338
 339 function delCookie(name, path, domain) {
 340         if (getCookie(name)) {
 341                 document.cookie = name + "=" +
 342                 ((path) ? ";path=" + path : "") +
 343                 ((domain) ? ";domain=" + domain : "" ) +
 344                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 345         }
 346 }
 347
 348
 349 function getCookie(name) {
 350
 351         var dc = document.cookie;
 352         var prefix = name + "=";
 353         var begin = dc.indexOf("; " + prefix);
 354         if (begin == -1) {
 355             begin = dc.indexOf(prefix);
 356             if (begin != 0) return null;
 357         }
 358         else {
 359             begin += 2;
 360         }
 361         var end = document.cookie.indexOf(";", begin);
 362         if (end == -1) {
 363             end = dc.length;
 364         }
 365         return unescape(dc.substring(begin + prefix.length, end));
 366 }
 367
 368 function gotoPreferences() {
 369         document.location.href = "prefs.php";
 370 }
 371
 372 function gotoMain() {
 373         document.location.href = "tt-rss.php";
 374 }
 375
 376 function gotoExportOpml() {
 377         document.location.href = "opml.php?op=Export";
 378 }
 379
 380 function parse_counters(reply, scheduled_call) {
 381         try {
 382
 383                 var feeds_found = 0;
 384
 385                 var elems = JSON.parse(reply.firstChild.nodeValue);
 386
 387                 for (var l = 0; l < elems.length; l++) {
 388
 389                         var id = elems[l].id
 390                         var kind = elems[l].kind;
 391                         var ctr = parseInt(elems[l].counter)
 392                         var error = elems[l].error;
 393                         var has_img = elems[l].has_img;
 394                         var updated = elems[l].updated;
 395                         var title = elems[l].title;
 396                         var xmsg = elems[l].xmsg;
 397
 398                         if (id == "global-unread") {
 399
 400                                 if (ctr > global_unread) {
 401                                         offlineDownloadStart(1);
 402                                 }
 403
 404                                 global_unread = ctr;
 405                                 updateTitle();
 406                                 continue;
 407                         }
 408
 409                         if (id == "subscribed-feeds") {
 410                                 feeds_found = ctr;
 411                                 continue;
 412                         }
 413
 414                         if (kind && kind == "cat") {
 415                                 var catctr = $("FCATCTR-" + id);
 416                                 if (catctr) {
 417                                         catctr.innerHTML = "(" + ctr + ")";
 418                                         if (ctr > 0) {
 419                                                 catctr.className = "catCtrHasUnread";
 420                                         } else {
 421                                                 catctr.className = "catCtrNoUnread";
 422                                         }
 423                                 }
 424                                 continue;
 425                         }
 426
 427                         var feedctr = $("FEEDCTR-" + id);
 428                         var feedu = $("FEEDU-" + id);
 429                         var feedr = $("FEEDR-" + id);
 430                         var feed_img = $("FIMG-" + id);
 431                         var feedlink = $("FEEDL-" + id);
 432                         var feedupd = $("FLUPD-" + id);
 433
 434                         if (updated && feedlink) {
 435                                 if (error) {
 436                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 437                                 } else {
 438                                         feedlink.title = "Updated: " + updated;
 439                                 }
 440                         }
 441
 442                         if (feedupd) {
 443                                 if (!updated) updated = "";
 444
 445                                 if (error) {
 446                                         if (xmsg) {
 447                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 448                                         } else {
 449                                                 feedupd.innerHTML = updated + " (Error)";
 450                                         }
 451                                 } else {
 452                                         if (xmsg) {
 453                                                 feedupd.innerHTML = updated + " (" + xmsg + ")";
 454                                         } else {
 455                                                 feedupd.innerHTML = updated;
 456                                         }
 457                                 }
 458                         }
 459
 460                         if (has_img && feed_img) {
 461                                 if (!feed_img.src.match(id + ".ico")) {
 462                                         feed_img.src = getInitParam("icons_url") + "/" + id + ".ico";
 463                                 }
 464                         }
 465
 466                         if (feedlink && title) {
 467                                 feedlink.innerHTML = title;
 468                         }
 469
 470                         if (feedctr && feedu && feedr) {
 471
 472 //                              if (id == getActiveFeedId())
 473 //                                      console.log("HAS CTR: " + feedu.innerHTML + " GOT CTR: " + ctr +
 474 //                                                      " IS_SCHED: " + scheduled_call);
 475
 476                                 if (parseInt(ctr) > 0 &&
 477                                                 parseInt(feedu.innerHTML) < parseInt(ctr) &&
 478                                                 id == getActiveFeedId() && scheduled_call) {
 479
 480                                         displayNewContentPrompt(id);
 481                                 }
 482
 483                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 484
 485                                 feedu.innerHTML = ctr;
 486
 487                                 if (error) {
 488                                         feedr.className = feedr.className.replace("feed", "error");
 489                                 } else if (id > 0) {
 490                                         feedr.className = feedr.className.replace("error", "feed");
 491                                 }
 492
 493                                 if (ctr > 0) {
 494                                         feedctr.className = "feedCtrHasUnread";
 495                                         if (!feedr.className.match("Unread")) {
 496                                                 var is_selected = feedr.className.match("Selected");
 497
 498                                                 feedr.className = feedr.className.replace("Selected", "");
 499                                                 feedr.className = feedr.className.replace("Unread", "");
 500
 501                                                 feedr.className = feedr.className + "Unread";
 502
 503                                                 if (is_selected) {
 504                                                         feedr.className = feedr.className + "Selected";
 505                                                 }
 506
 507                                         }
 508
 509                                         if (row_needs_hl &&
 510                                                         !getInitParam("theme_options").match('no_highlights')) {
 511                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 512                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 513
 514                                                 cache_invalidate("F:" + id);
 515                                         }
 516                                 } else {
 517                                         feedctr.className = "feedCtrNoUnread";
 518                                         feedr.className = feedr.className.replace("Unread", "");
 519                                 }
 520                         }
 521                 }
 522
 523                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 524
 525                 var feeds_stored = number_of_feeds;
 526
 527                 //console.log("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 528
 529                 if (feeds_stored != feeds_found) {
 530                         number_of_feeds = feeds_found;
 531
 532                         if (feeds_stored != 0 && feeds_found != 0) {
 533                                 console.log("Subscribed feed number changed, refreshing feedlist");
 534                                 setTimeout('updateFeedList(false, false)', 50);
 535                         }
 536                 } else {
 537 /*                      var fl = $("feeds-frame").innerHTML;
 538                         if (fl) {
 539                                 cache_invalidate("FEEDLIST");
 540                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 541                         } */
 542                 }
 543
 544         } catch (e) {
 545                 exception_error("parse_counters", e);
 546         }
 547 }
 548
 549 /*function parse_counters_reply(transport, scheduled_call) {
 550
 551         if (!transport.responseXML) {
 552                 notify_error("Backend did not return valid XML", true);
 553                 return;
 554         }
 555
 556         var reply = transport.responseXML.firstChild;
 557
 558         if (!reply) {
 559                 notify_error("Backend did not return expected XML object", true);
 560                 updateTitle("");
 561                 return;
 562         }
 563
 564         if (!transport_error_check(transport)) return;
 565
 566         var counters = reply.getElementsByTagName("counters")[0];
 567
 568         if (counters)
 569                 parse_counters(counters, scheduled_call);
 570
 571         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 572
 573         if (runtime_info)
 574                 parse_runtime_info(runtime_info);
 575
 576         if (feedsSortByUnread()) {
 577                 resort_feedlist();
 578         }
 579
 580         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 581
 582 } */
 583
 584
 585 function get_feed_unread(id) {
 586         try {
 587                 return parseInt($("FEEDU-" + id).innerHTML);
 588         } catch (e) {
 589                 return -1;
 590         }
 591 }
 592
 593 function get_cat_unread(id) {
 594         try {
 595                 var ctr = $("FCATCTR-" + id).innerHTML;
 596                 ctr = ctr.replace("(", "");
 597                 ctr = ctr.replace(")", "");
 598                 return parseInt(ctr);
 599         } catch (e) {
 600                 return -1;
 601         }
 602 }
 603
 604 function get_feed_entry_unread(elem) {
 605
 606         var id = elem.id.replace("FEEDR-", "");
 607
 608         if (id <= 0) {
 609                 return -1;
 610         }
 611
 612         try {
 613                 return parseInt($("FEEDU-" + id).innerHTML);
 614         } catch (e) {
 615                 return -1;
 616         }
 617 }
 618
 619 function get_feed_entry_name(elem) {
 620         var id = elem.id.replace("FEEDR-", "");
 621         return getFeedName(id);
 622 }
 623
 624
 625 function resort_category(node, cat_mode) {
 626
 627         try {
 628
 629                 console.log("resort_category: " + node + " CM=" + cat_mode);
 630
 631                 var by_unread = feedsSortByUnread();
 632
 633                 var list = node.getElementsByTagName("LI");
 634
 635                 for (i = 0; i < list.length; i++) {
 636
 637                         for (j = i+1; j < list.length; j++) {
 638
 639                                 var tmp_val = get_feed_entry_unread(list[i]);
 640                                 var cur_val = get_feed_entry_unread(list[j]);
 641
 642                                 var tmp_name = get_feed_entry_name(list[i]);
 643                                 var cur_name = get_feed_entry_name(list[j]);
 644
 645                                 /* we don't want to match FEEDR-0 - e.g. Archived articles */
 646
 647                                 var valid_pair = cat_mode || (list[i].id.match(/FEEDR-[1-9]/) &&
 648                                                 list[j].id.match(/FEEDR-[1-9]/));
 649
 650                                 if (valid_pair && ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name)))) {
 651                                         tempnode_i = list[i].cloneNode(true);
 652                                         tempnode_j = list[j].cloneNode(true);
 653                                         node.replaceChild(tempnode_i, list[j]);
 654                                         node.replaceChild(tempnode_j, list[i]);
 655                                 }
 656                         }
 657                 }
 658
 659         } catch (e) {
 660                 exception_error("resort_category", e);
 661         }
 662
 663 }
 664
 665 function resort_feedlist() {
 666         console.log("resort_feedlist");
 667
 668         if ($("FCATLIST--1")) {
 669
 670                 var lists = document.getElementsByTagName("UL");
 671
 672                 for (var i = 0; i < lists.length; i++) {
 673                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 674                                 resort_category(lists[i], true);
 675                         }
 676                 }
 677
 678         } else {
 679                 resort_category($("feedList"), false);
 680         }
 681 }
 682
 683 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 684   * * @author Sundar Dorai-Raj
 685   * * Email: sdoraira@vt.edu
 686   * * This program is free software; you can redistribute it and/or
 687   * * modify it under the terms of the GNU General Public License
 688   * * as published by the Free Software Foundation; either version 2
 689   * * of the License, or (at your option) any later version,
 690   * * provided that any use properly credits the author.
 691   * * This program is distributed in the hope that it will be useful,
 692   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 693   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 694   * * GNU General Public License for more details at http://www.gnu.org * * */
 695
 696   var numbers=".0123456789";
 697   function isNumeric(x) {
 698     // is x a String or a character?
 699     if(x.length>1) {
 700       // remove negative sign
 701       x=Math.abs(x)+"";
 702       for(j=0;j<x.length;j++) {
 703         // call isNumeric recursively for each character
 704         number=isNumeric(x.substring(j,j+1));
 705         if(!number) return number;
 706       }
 707       return number;
 708     }
 709     else {
 710       // if x is number return true
 711       if(numbers.indexOf(x)>=0) return true;
 712       return false;
 713     }
 714   }
 715
 716
 717 function hideOrShowFeeds(hide) {
 718
 719         try {
 720
 721         //console.log("hideOrShowFeeds: " + hide);
 722
 723         if ($("FCATLIST--1")) {
 724
 725                 var lists = document.getElementsByTagName("UL");
 726
 727                 for (var i = 0; i < lists.length; i++) {
 728                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 729
 730                                 var id = lists[i].id.replace("FCATLIST-", "");
 731                                 hideOrShowFeedsCategory(id, hide);
 732                         }
 733                 }
 734
 735         } else {
 736                 hideOrShowFeedsCategory(null, hide);
 737         }
 738
 739         } catch (e) {
 740                 exception_error("hideOrShowFeeds", e);
 741         }
 742 }
 743
 744 function hideOrShowFeedsCategory(id, hide) {
 745
 746         try {
 747
 748                 var node = null;
 749                 var cat_node = null;
 750
 751                 if (id) {
 752                         node = $("FCATLIST-" + id);
 753                         cat_node = $("FCAT-" + id);
 754                 } else {
 755                         node = $("feedList"); // no categories
 756                 }
 757
 758         //      console.log("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 759
 760                 var cat_unread = 0;
 761
 762                 if (!node) {
 763                         console.warn("hideOrShowFeeds: passed node is null, aborting");
 764                         return;
 765                 }
 766
 767         //      console.log("cat: " + node.id);
 768
 769                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 770                         for (i = 0; i < node.childNodes.length; i++) {
 771                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 772
 773                                 if (node.childNodes[i].style != undefined) {
 774
 775                                         var has_unread = (node.childNodes[i].className != "feed" &&
 776                                                 node.childNodes[i].className != "label" &&
 777                                                 !(!getInitParam("hide_read_shows_special") &&
 778                                                         node.childNodes[i].className == "virt") &&
 779                                                 node.childNodes[i].className != "error" &&
 780                                                 node.childNodes[i].className != "tag");
 781
 782         //                              console.log(node.childNodes[i].id + " --> " + has_unread);
 783
 784                                         if (hide && !has_unread) {
 785                                                 //node.childNodes[i].style.display = "none";
 786                                                 var id = node.childNodes[i].id;
 787                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 788                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 789                                         }
 790
 791                                         if (!hide) {
 792                                                 node.childNodes[i].style.display = "list-item";
 793                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 794                                         }
 795
 796                                         if (has_unread) {
 797                                                 node.childNodes[i].style.display = "list-item";
 798                                                 cat_unread++;
 799                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 800                                                 //Effect.Highlight(node.childNodes[i]);
 801                                         }
 802                                 }
 803                         }
 804                 }
 805
 806         //      console.log("end cat: " + node.id + " unread " + cat_unread);
 807
 808                 if (cat_node) {
 809
 810                         if (cat_unread == 0) {
 811                                 if (cat_node.style == undefined) {
 812                                         console.log("ERROR: supplied cat_node " + cat_node +
 813                                                 " has no styles. WTF?");
 814                                         return;
 815                                 }
 816                                 if (hide) {
 817                                         //cat_node.style.display = "none";
 818                                         Effect.Fade(cat_node, {duration : 0.3,
 819                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 820                                 } else {
 821                                         cat_node.style.display = "list-item";
 822                                 }
 823                         } else {
 824                                 try {
 825                                         cat_node.style.display = "list-item";
 826                                 } catch (e) {
 827                                         console.log(e);
 828                                 }
 829                         }
 830                 }
 831
 832 //      console.log("unread for category: " + cat_unread);
 833
 834         } catch (e) {
 835                 exception_error("hideOrShowFeedsCategory", e);
 836         }
 837 }
 838
 839 function selectTableRow(r, do_select) {
 840         r.className = r.className.replace("Selected", "");
 841
 842         if (do_select) {
 843                 r.className = r.className + "Selected";
 844         }
 845 }
 846
 847 function selectTableRowById(elem_id, check_id, do_select) {
 848
 849         try {
 850
 851                 var row = $(elem_id);
 852
 853                 if (row) {
 854                         selectTableRow(row, do_select);
 855                 }
 856
 857                 var check = $(check_id);
 858
 859                 if (check) {
 860                         check.checked = do_select;
 861                 }
 862         } catch (e) {
 863                 exception_error("selectTableRowById", e);
 864         }
 865 }
 866
 867 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 868         classcheck, reset_others) {
 869
 870         var content = $(content_id);
 871
 872         if (!content) {
 873                 console.log("[selectTableRows] Element " + content_id + " not found.");
 874                 return;
 875         }
 876
 877         for (i = 0; i < content.rows.length; i++) {
 878                 if (Element.visible(content.rows[i])) {
 879                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 880
 881                                 if (content.rows[i].id.match(prefix)) {
 882                                         selectTableRow(content.rows[i], do_select);
 883
 884                                         var row_id = content.rows[i].id.replace(prefix, "");
 885                                         var check = $(check_prefix + row_id);
 886
 887                                         if (check) {
 888                                                 check.checked = do_select;
 889                                         }
 890                                 } else if (reset_others) {
 891                                         selectTableRow(content.rows[i], false);
 892
 893                                         var row_id = content.rows[i].id.replace(prefix, "");
 894                                         var check = $(check_prefix + row_id);
 895
 896                                         if (check) {
 897                                                 check.checked = false;
 898                                         }
 899
 900                                 }
 901                         } else if (reset_others) {
 902                                 selectTableRow(content.rows[i], false);
 903
 904                                 var row_id = content.rows[i].id.replace(prefix, "");
 905                                 var check = $(check_prefix + row_id);
 906
 907                                 if (check) {
 908                                         check.checked = false;
 909                                 }
 910
 911                         }
 912                 }
 913         }
 914 }
 915
 916 function getSelectedTableRowIds(content_id, prefix) {
 917
 918         var content = $(content_id);
 919
 920         if (!content) {
 921                 console.log("[getSelectedTableRowIds] Element " + content_id + " not found.");
 922                 return new Array();
 923         }
 924
 925         var sel_rows = new Array();
 926
 927         for (i = 0; i < content.rows.length; i++) {
 928                 if (content.rows[i].id.match(prefix) &&
 929                                 content.rows[i].className.match("Selected")) {
 930
 931                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 932                         sel_rows.push(row_id);
 933                 }
 934         }
 935
 936         return sel_rows;
 937
 938 }
 939
 940 function toggleSelectRowById(sender, id) {
 941         var row = $(id);
 942
 943         if (sender.checked) {
 944                 if (!row.className.match("Selected")) {
 945                         row.className = row.className + "Selected";
 946                 }
 947         } else {
 948                 if (row.className.match("Selected")) {
 949                         row.className = row.className.replace("Selected", "");
 950                 }
 951         }
 952 }
 953
 954 function toggleSelectListRow(sender) {
 955         var parent_row = sender.parentNode;
 956
 957         if (sender.checked) {
 958                 if (!parent_row.className.match("Selected")) {
 959                         parent_row.className = parent_row.className + "Selected";
 960                 }
 961         } else {
 962                 if (parent_row.className.match("Selected")) {
 963                         parent_row.className = parent_row.className.replace("Selected", "");
 964                 }
 965         }
 966 }
 967
 968 function tSR(sender) {
 969         return toggleSelectRow(sender);
 970 }
 971
 972 function toggleSelectRow(sender) {
 973         var parent_row = sender.parentNode.parentNode;
 974
 975         if (sender.checked) {
 976                 if (!parent_row.className.match("Selected")) {
 977                         parent_row.className = parent_row.className + "Selected";
 978                 }
 979         } else {
 980                 if (parent_row.className.match("Selected")) {
 981                         parent_row.className = parent_row.className.replace("Selected", "");
 982                 }
 983         }
 984 }
 985
 986 function getNextUnreadCat(id) {
 987         try {
 988                 var rows = $("feedList").getElementsByTagName("LI");
 989                 var feeds = new Array();
 990
 991                 var unread_only = true;
 992                 var is_cat = true;
 993
 994                 for (var i = 0; i < rows.length; i++) {
 995                         if (rows[i].id.match("FCAT-")) {
 996                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
 997
 998                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
 999
1000                                         if (cat_id >= 0) {
1001                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1002                                                         feeds.push(cat_id);
1003                                                 }
1004                                         }
1005                                 }
1006                         }
1007                 }
1008
1009                 var idx = feeds.indexOf(id);
1010                 if (idx != -1 && idx < feeds.length) {
1011                         return feeds[idx+1];
1012                 } else {
1013                         return feeds.shift();
1014                 }
1015
1016         } catch (e) {
1017                 exception_error("getNextUnreadCat", e);
1018         }
1019 }
1020
1021 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1022         try {
1023
1024 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1025
1026                 var rows = $("feedList").getElementsByTagName("LI");
1027                 var feeds = new Array();
1028
1029                 for (var i = 0; i < rows.length; i++) {
1030                         if (rows[i].id.match("FEEDR-")) {
1031
1032                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1033
1034                                         if (!unread_only ||
1035                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1036                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1037                                         }
1038                                 }
1039                         }
1040
1041                         if (rows[i].id.match("FCAT-")) {
1042                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1043
1044                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1045
1046                                         if (cat_id >= 0) {
1047                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1048                                                         feeds.push("CAT:"+cat_id);
1049                                                 }
1050                                         }
1051                                 }
1052                         }
1053                 }
1054
1055 //              alert(feeds.toString());
1056
1057                 if (!id) {
1058                         if (direction == "next") {
1059                                 return feeds.shift();
1060                         } else {
1061                                 return feeds.pop();
1062                         }
1063                 } else {
1064                         if (direction == "next") {
1065                                 if (is_cat) id = "CAT:" + id;
1066                                 var idx = feeds.indexOf(id);
1067                                 if (idx != -1 && idx < feeds.length) {
1068                                         return feeds[idx+1];
1069                                 } else {
1070                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1071                                 }
1072                         } else {
1073                                 if (is_cat) id = "CAT:" + id;
1074                                 var idx = feeds.indexOf(id);
1075                                 if (idx > 0) {
1076                                         return feeds[idx-1];
1077                                 } else {
1078                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1079                                 }
1080                         }
1081
1082                 }
1083
1084         } catch (e) {
1085                 exception_error("getRelativeFeedId2", e);
1086         }
1087 }
1088
1089 function checkboxToggleElement(elem, id) {
1090         if (elem.checked) {
1091                 Effect.Appear(id, {duration : 0.5});
1092         } else {
1093                 Effect.Fade(id, {duration : 0.5});
1094         }
1095 }
1096
1097 function dropboxSelect(e, v) {
1098         for (i = 0; i < e.length; i++) {
1099                 if (e[i].value == v) {
1100                         e.selectedIndex = i;
1101                         break;
1102                 }
1103         }
1104 }
1105
1106 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1107 // bugfixed just a little bit :-)
1108 function getURLParam(strParamName){
1109   var strReturn = "";
1110   var strHref = window.location.href;
1111
1112   if (strHref.indexOf("#") == strHref.length-1) {
1113                 strHref = strHref.substring(0, strHref.length-1);
1114   }
1115
1116   if ( strHref.indexOf("?") > -1 ){
1117     var strQueryString = strHref.substr(strHref.indexOf("?"));
1118     var aQueryString = strQueryString.split("&");
1119     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1120       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1121         var aParam = aQueryString[iParam].split("=");
1122         strReturn = aParam[1];
1123         break;
1124       }
1125     }
1126   }
1127   return strReturn;
1128 }
1129
1130 function leading_zero(p) {
1131         var s = String(p);
1132         if (s.length == 1) s = "0" + s;
1133         return s;
1134 }
1135
1136 function make_timestamp() {
1137         var d = new Date();
1138
1139         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1140                         ":" + leading_zero(d.getSeconds());
1141 }
1142
1143
1144 function closeErrorBox() {
1145
1146         if (Element.visible("errorBoxShadow")) {
1147                 Element.hide("dialog_overlay");
1148                 Element.hide("errorBoxShadow");
1149
1150                 enableHotkeys();
1151         }
1152
1153         return false;
1154 }
1155
1156 function closeInfoBox(cleanup) {
1157
1158         try {
1159                 enableHotkeys();
1160
1161                 if (Element.visible("infoBoxShadow")) {
1162                         Element.hide("dialog_overlay");
1163                         Element.hide("infoBoxShadow");
1164
1165                         if (cleanup) $("infoBox").innerHTML = "&nbsp;";
1166                 }
1167         } catch (e) {
1168                 exception_error("closeInfoBox", e);
1169         }
1170
1171         return false;
1172 }
1173
1174
1175 function displayDlg(id, param, callback) {
1176
1177         notify_progress("Loading, please wait...", true);
1178
1179         disableHotkeys();
1180
1181         var query = "?op=dlg&id=" +
1182                 param_escape(id) + "&param=" + param_escape(param);
1183
1184         new Ajax.Request("backend.php", {
1185                 parameters: query,
1186                 onComplete: function (transport) {
1187                         infobox_callback2(transport);
1188                         if (callback) callback(transport);
1189                 } });
1190
1191         return false;
1192 }
1193
1194 function infobox_submit_callback2(transport) {
1195         closeInfoBox();
1196
1197         try {
1198                 // called from prefs, reload tab
1199                 if (typeof active_tab != 'undefined' && active_tab) {
1200                         selectTab(active_tab, false);
1201                 }
1202         } catch (e) { }
1203
1204         if (transport.responseText) {
1205                 notify_info(transport.responseText);
1206         }
1207 }
1208
1209 function infobox_callback2(transport) {
1210         try {
1211
1212                 console.log("infobox_callback2");
1213
1214                 var box = $('infoBox');
1215
1216                 if (box) {
1217
1218                         if (!getInitParam("infobox_disable_overlay")) {
1219                                 Element.show("dialog_overlay");
1220                         }
1221
1222                         box.innerHTML=transport.responseText;
1223                         Element.show("infoBoxShadow");
1224                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1225
1226
1227                 }
1228
1229                 disableHotkeys();
1230
1231                 notify("");
1232         } catch (e) {
1233                 exception_error("infobox_callback2", e);
1234         }
1235 }
1236
1237 function createFilter() {
1238
1239         try {
1240
1241                 var form = document.forms['filter_add_form'];
1242                 var reg_exp = form.reg_exp.value;
1243
1244                 if (reg_exp == "") {
1245                         alert(__("Can't add filter: nothing to match on."));
1246                         return false;
1247                 }
1248
1249                 var query = "?op=rpc&subop=verifyRegexp&reg_exp=" + param_escape(reg_exp);
1250
1251                 notify_progress("Verifying regular expression...");
1252
1253                 new Ajax.Request("backend.php", {
1254                                 parameters: query,
1255                                 onComplete: function(transport) {
1256                                         handle_rpc_reply(transport);
1257
1258                                         var response = transport.responseXML;
1259
1260                                         if (response) {
1261                                                 var s = response.getElementsByTagName("status")[0].firstChild.nodeValue;
1262
1263                                                 notify('');
1264
1265                                                 if (s == "INVALID") {
1266                                                         alert("Match regular expression seems to be invalid.");
1267                                                         return;
1268                                                 } else {
1269
1270                                                         var query = Form.serialize("filter_add_form");
1271
1272                                                         // we can be called from some other tab in Prefs
1273                                                         if (typeof active_tab != 'undefined' && active_tab) {
1274                                                                 active_tab = "filterConfig";
1275                                                         }
1276
1277                                                         new Ajax.Request("backend.php?" + query, {
1278                                                                 onComplete: function (transport) {
1279                                                                         infobox_submit_callback2(transport);
1280                                                                 } });
1281
1282                                                         return true;
1283                                                 }
1284                                         }
1285
1286                         } });
1287
1288         } catch (e) {
1289                 exception_error("createFilter", e);
1290         }
1291 }
1292
1293 function isValidURL(s) {
1294         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1295 }
1296
1297 function subscribeToFeed() {
1298
1299         try {
1300
1301         var form = document.forms['feed_add_form'];
1302         var feed_url = form.feed_url.value;
1303
1304         if (feed_url == "") {
1305                 alert(__("Can't subscribe: no feed URL given."));
1306                 return false;
1307         }
1308
1309         notify_progress(__("Subscribing to feed..."), true);
1310
1311         var query = Form.serialize("feed_add_form");
1312
1313         console.log("subscribe q: " + query);
1314
1315         Form.disable("feed_add_form");
1316
1317         new Ajax.Request("backend.php", {
1318                 parameters: query,
1319                 onComplete: function(transport) {
1320                         //dlg_frefresh_callback(transport);
1321
1322                         try {
1323
1324                                 if (!transport.responseXML)
1325                                         console.log(transport.responseText);
1326
1327                                 var result = transport.responseXML.getElementsByTagName('result')[0];
1328                                 var rc = parseInt(result.getAttribute('code'));
1329
1330                                 Form.enable("feed_add_form");
1331
1332                                 notify('');
1333
1334                                 switch (rc) {
1335                                 case 1:
1336                                         closeInfoBox();
1337                                         notify_info(__("Subscribed to %s").replace("%s", feed_url));
1338
1339                                         if (inPreferences()) {
1340                                                 updateFeedList();
1341                                         } else {
1342                                                 setTimeout('updateFeedList(false, false)', 50);
1343                                         }
1344                                         break;
1345                                 case 2:
1346                                         alert(__("Specified URL seems to be invalid."));
1347                                         break;
1348                                 case 3:
1349                                         alert(__("Specified URL doesn't seem to contain any feeds."));
1350                                         break;
1351                                 case 4:
1352                                         new Ajax.Request("backend.php", {
1353                                                 parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
1354                                                 onComplete: function(transport) {
1355                                                         var result = transport.responseXML.getElementsByTagName('urls')[0];
1356                                                         var feeds = JSON.parse(result.firstChild.nodeValue);
1357                                                         var select = document.getElementById("faad_feeds_container_select");
1358
1359                                                         while (select.hasChildNodes()) {
1360                                                                 select.removeChild(elem.firstChild);
1361                                                         }
1362                                                         var count = 0;
1363                                                         for (var feedUrl in feeds) {
1364                                                                 select.insert(new Option(feeds[feedUrl], feedUrl, false));
1365                                                                 count++;
1366                                                         }
1367                                                         if (count > 5) count = 5;
1368                                                         select.size = count;
1369
1370                                                         Effect.Appear('fadd_feeds_container', {duration : 0.5});
1371                                                 }
1372                                         });
1373                                         break;
1374                                 case 5:
1375                                         alert(__("Couldn't download the specified URL."));
1376                                         break;
1377                                 case 0:
1378                                         alert(__("You are already subscribed to this feed."));
1379                                         break;
1380                                 }
1381
1382                         } catch (e) {
1383                                 exception_error("subscribeToFeed", e);
1384                         }
1385
1386                 } });
1387
1388         } catch (e) {
1389                 exception_error("subscribeToFeed", e);
1390         }
1391
1392         return false;
1393 }
1394
1395 function filterCR(e, f)
1396 {
1397      var key;
1398
1399      if(window.event)
1400           key = window.event.keyCode;     //IE
1401      else
1402           key = e.which;     //firefox
1403
1404         if (key == 13) {
1405                 if (typeof f != 'undefined') {
1406                         f();
1407                         return false;
1408                 } else {
1409                         return false;
1410                 }
1411         } else {
1412                 return true;
1413         }
1414 }
1415
1416 function getInitParam(key) {
1417         return init_params[key];
1418 }
1419
1420 function setInitParam(key, value) {
1421         init_params[key] = value;
1422 }
1423
1424 function fatalError(code, msg, ext_info) {
1425         try {
1426
1427                 if (!ext_info) ext_info = "N/A";
1428
1429                 if (code == 6) {
1430                         window.location.href = "tt-rss.php";
1431                 } else if (code == 5) {
1432                         window.location.href = "db-updater.php";
1433                 } else {
1434
1435                         if (msg == "") msg = "Unknown error";
1436
1437                         var ebc = $("xebContent");
1438
1439                         if (ebc) {
1440
1441                                 Element.show("dialog_overlay");
1442                                 Element.show("errorBoxShadow");
1443                                 Element.hide("xebBtn");
1444
1445                                 if (ext_info) {
1446                                         if (ext_info.responseText) {
1447                                                 ext_info = ext_info.responseText;
1448                                         }
1449                                 }
1450
1451                                 ebc.innerHTML =
1452                                         "<div><b>Error message:</b></div>" +
1453                                         "<pre>" + msg + "</pre>" +
1454                                         "<div><b>Additional information:</b></div>" +
1455                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1456                         }
1457                 }
1458
1459         } catch (e) {
1460                 exception_error("fatalError", e);
1461         }
1462 }
1463
1464 function getFeedName(id, is_cat) {
1465         var e;
1466
1467         if (is_cat) {
1468                 e = $("FCATN-" + id);
1469         } else {
1470                 e = $("FEEDN-" + id);
1471         }
1472         if (e) {
1473                 return e.innerHTML.stripTags();
1474         } else {
1475                 return null;
1476         }
1477 }
1478
1479 function filterDlgCheckType(sender) {
1480
1481         try {
1482
1483                 var ftype = sender[sender.selectedIndex].value;
1484
1485                 var form = document.forms["filter_add_form"];
1486
1487                 if (!form) {
1488                         form = document.forms["filter_edit_form"];
1489                 }
1490
1491                 if (!form) {
1492                         console.log("filterDlgCheckType: can't find form!");
1493                         return;
1494                 }
1495
1496                 // if selected filter type is 5 (Date) enable the modifier dropbox
1497                 if (ftype == 5) {
1498                         Element.show("filter_dlg_date_mod_box");
1499                         Element.show("filter_dlg_date_chk_box");
1500                 } else {
1501                         Element.hide("filter_dlg_date_mod_box");
1502                         Element.hide("filter_dlg_date_chk_box");
1503
1504                 }
1505
1506         } catch (e) {
1507                 exception_error("filterDlgCheckType", e);
1508         }
1509
1510 }
1511
1512 function filterDlgCheckAction(sender) {
1513
1514         try {
1515
1516                 var action = sender[sender.selectedIndex].value;
1517
1518                 var form = document.forms["filter_add_form"];
1519
1520                 if (!form) {
1521                         form = document.forms["filter_edit_form"];
1522                 }
1523
1524                 if (!form) {
1525                         console.log("filterDlgCheckAction: can't find form!");
1526                         return;
1527                 }
1528
1529                 var action_param = $("filter_dlg_param_box");
1530
1531                 if (!action_param) {
1532                         console.log("filterDlgCheckAction: can't find action param box!");
1533                         return;
1534                 }
1535
1536                 // if selected action supports parameters, enable params field
1537                 if (action == 4 || action == 6 || action == 7) {
1538                         Element.show(action_param);
1539                         if (action != 7) {
1540                                 Element.show(form.action_param);
1541                                 Element.hide(form.action_param_label);
1542                         } else {
1543                                 Element.show(form.action_param_label);
1544                                 Element.hide(form.action_param);
1545                         }
1546                 } else {
1547                         Element.hide(action_param);
1548                 }
1549
1550         } catch (e) {
1551                 exception_error("filterDlgCheckAction", e);
1552         }
1553
1554 }
1555
1556 function filterDlgCheckDate() {
1557         try {
1558                 var form = document.forms["filter_add_form"];
1559
1560                 if (!form) {
1561                         form = document.forms["filter_edit_form"];
1562                 }
1563
1564                 if (!form) {
1565                         console.log("filterDlgCheckAction: can't find form!");
1566                         return;
1567                 }
1568
1569                 var reg_exp = form.reg_exp.value;
1570
1571                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
1572
1573                 new Ajax.Request("backend.php", {
1574                         parameters: query,
1575                         onComplete: function(transport) {
1576
1577                                 var form = document.forms["filter_add_form"];
1578
1579                                 if (!form) {
1580                                         form = document.forms["filter_edit_form"];
1581                                 }
1582
1583                                 if (transport.responseXML) {
1584                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1585
1586                                         if (result && result.firstChild) {
1587                                                 if (result.firstChild.nodeValue == "1") {
1588
1589                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1590
1591                                                         return;
1592                                                 }
1593                                         }
1594                                 }
1595
1596                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1597
1598                         } });
1599
1600
1601         } catch (e) {
1602                 exception_error("filterDlgCheckDate", e);
1603         }
1604 }
1605
1606 function explainError(code) {
1607         return displayDlg("explainError", code);
1608 }
1609
1610 // this only searches loaded headlines list, not in CDM
1611 function getRelativePostIds(id, limit) {
1612
1613         if (!limit) limit = 3;
1614
1615         //console.log("getRelativePostIds: " + id + " limit=" + limit);
1616
1617         var ids = new Array();
1618         var container = $("headlinesList");
1619
1620         if (container) {
1621                 var rows = container.rows;
1622
1623                 for (var i = 0; i < rows.length; i++) {
1624                         var r_id = rows[i].id.replace("RROW-", "");
1625
1626                         if (r_id == id) {
1627                                 for (var k = 1; k <= limit; k++) {
1628                                         var nid = false;
1629
1630                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1631                                         if (nid) ids.push(nid);
1632
1633                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1634                                         if (nid) ids.push(nid);
1635                                 }
1636
1637                                 return ids;
1638                         }
1639                 }
1640         }
1641
1642         return false;
1643 }
1644
1645 function openArticleInNewWindow(id) {
1646         try {
1647                 console.log("openArticleInNewWindow: " + id);
1648
1649                 var query = "?op=rpc&subop=getArticleLink&id=" + id;
1650                 var wname = "ttrss_article_" + id;
1651
1652                 console.log(query + " " + wname);
1653
1654                 var w = window.open("", wname);
1655
1656                 if (!w) notify_error("Failed to open window for the article");
1657
1658                 new Ajax.Request("backend.php", {
1659                         parameters: query,
1660                         onComplete: function(transport) {
1661
1662                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1663                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1664
1665                                         console.log("open_article received link: " + link);
1666
1667                                         if (link && id) {
1668
1669                                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
1670
1671                                                 console.log("link url: " + link.firstChild.nodeValue + ", wname " + wname);
1672
1673                                                 var w = window.open(link.firstChild.nodeValue, wname);
1674
1675                                                 if (!w) { notify_error("Failed to load article in new window"); }
1676
1677                                                 if (id) {
1678                                                         id = id.firstChild.nodeValue;
1679                                                         if (!$("headlinesList")) {
1680                                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
1681                                                         }
1682                                                 }
1683                                         } else {
1684                                                 notify_error("Can't open article: received invalid article link");
1685                                         }
1686                                 } });
1687
1688         } catch (e) {
1689                 exception_error("openArticleInNewWindow", e);
1690         }
1691 }
1692
1693 function isCdmMode() {
1694         return !$("headlinesList");
1695 }
1696
1697 function getSelectedArticleIds2() {
1698         var rows = new Array();
1699         var cdm_mode = isCdmMode();
1700
1701         if (cdm_mode) {
1702                 rows = cdmGetSelectedArticles();
1703         } else {
1704                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1705         }
1706
1707         var ids = new Array();
1708
1709         for (var i = 0; i < rows.length; i++) {
1710                 var chk = $("RCHK-" + rows[i]);
1711                 if (chk && chk.checked) {
1712                         ids.push(rows[i]);
1713                 }
1714         }
1715
1716         return ids;
1717 }
1718
1719 function displayHelpInfobox(topic_id) {
1720
1721         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1722
1723         var w = window.open(url, "ttrss_help",
1724                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1725
1726 }
1727
1728 function loading_set_progress(p) {
1729         try {
1730                 if (p < last_progress_point || !Element.visible("overlay")) return;
1731
1732                 console.log("loading_set_progress : " + p + " (" + last_progress_point + ")");
1733
1734                 var o = $("l_progress_i");
1735
1736 //              o.style.width = (p * 2) + "px";
1737
1738                 new Effect.Scale(o, p, {
1739                         scaleY : false,
1740                         scaleFrom : last_progress_point,
1741                         scaleMode: { originalWidth : 200 },
1742                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1743
1744                 last_progress_point = p;
1745
1746         } catch (e) {
1747                 exception_error("loading_set_progress", e);
1748         }
1749 }
1750
1751 function remove_splash() {
1752         if (Element.visible("overlay")) {
1753                 console.log("about to remove splash, OMG!");
1754                 Element.hide("overlay");
1755                 console.log("removed splash!");
1756         }
1757 }
1758
1759 function getSelectedFeedsFromBrowser() {
1760
1761         var list = $("browseFeedList");
1762
1763         var selected = new Array();
1764
1765         for (i = 0; i < list.childNodes.length; i++) {
1766                 var child = list.childNodes[i];
1767                 if (child.id && child.id.match("FBROW-")) {
1768                         var id = child.id.replace("FBROW-", "");
1769
1770                         var cb = $("FBCHK-" + id);
1771
1772                         if (cb.checked) {
1773                                 selected.push(id);
1774                         }
1775                 }
1776         }
1777
1778         return selected;
1779 }
1780
1781 function updateFeedBrowser() {
1782         try {
1783
1784                 var query = Form.serialize("feed_browser");
1785
1786                 Element.show('feed_browser_spinner');
1787
1788                 new Ajax.Request("backend.php", {
1789                         parameters: query,
1790                         onComplete: function(transport) {
1791                                 notify('');
1792
1793                                 Element.hide('feed_browser_spinner');
1794
1795                                 var c = $("browseFeedList");
1796                                 var r = transport.responseXML.getElementsByTagName("content")[0];
1797                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
1798                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
1799
1800                                 if (c && r) {
1801                                         c.innerHTML = r.firstChild.nodeValue;
1802                                 }
1803
1804                                 if (parseInt(mode.getAttribute("value")) == 2) {
1805                                         Element.show('feed_archive_remove');
1806                                 } else {
1807                                         Element.hide('feed_archive_remove');
1808                                 }
1809
1810                         } });
1811
1812         } catch (e) {
1813                 exception_error("updateFeedBrowser", e);
1814         }
1815
1816 }
1817
1818 function transport_error_check(transport) {
1819         try {
1820                 if (transport.responseXML) {
1821                         var error = transport.responseXML.getElementsByTagName("error")[0];
1822
1823                         if (error) {
1824                                 var code = error.getAttribute("error-code");
1825                                 var msg = error.getAttribute("error-msg");
1826                                 if (code != 0) {
1827                                         fatalError(code, msg);
1828                                         return false;
1829                                 }
1830                         }
1831                 }
1832         } catch (e) {
1833                 exception_error("check_for_error_xml", e);
1834         }
1835         return true;
1836 }
1837
1838 function strip_tags(s) {
1839         return s.replace(/<\/?[^>]+(>|$)/g, "");
1840 }
1841
1842 function truncate_string(s, length) {
1843         if (!length) length = 30;
1844         var tmp = s.substring(0, length);
1845         if (s.length > length) tmp += "&hellip;";
1846         return tmp;
1847 }
1848
1849 function hotkey_prefix_timeout() {
1850         try {
1851
1852                 var date = new Date();
1853                 var ts = Math.round(date.getTime() / 1000);
1854
1855                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
1856                         console.log("hotkey_prefix seems to be stuck, aborting");
1857                         hotkey_prefix_pressed = false;
1858                         hotkey_prefix = false;
1859                         Element.hide('cmdline');
1860                 }
1861
1862                 setTimeout("hotkey_prefix_timeout()", 1000);
1863
1864         } catch  (e) {
1865                 exception_error("hotkey_prefix_timeout", e);
1866         }
1867 }
1868
1869 function hideAuxDlg() {
1870         try {
1871                 Element.hide('auxDlg');
1872         } catch (e) {
1873                 exception_error("hideAuxDlg", e);
1874         }
1875 }
1876
1877 function displayNewContentPrompt(id) {
1878         try {
1879
1880                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
1881                         __("New articles available in this feed (click to show)") + "</a>";
1882
1883                 msg = msg.replace("%s", getFeedName(id));
1884
1885                 $('auxDlg').innerHTML = msg;
1886
1887                 new Effect.Appear('auxDlg', {duration : 0.5});
1888
1889         } catch (e) {
1890                 exception_error("displayNewContentPrompt", e);
1891         }
1892 }
1893
1894 function feedBrowserSubscribe() {
1895         try {
1896
1897                 var selected = getSelectedFeedsFromBrowser();
1898
1899                 var mode = document.forms['feed_browser'].mode;
1900
1901                 mode = mode[mode.selectedIndex].value;
1902
1903                 if (selected.length > 0) {
1904                         closeInfoBox();
1905
1906                         notify_progress("Loading, please wait...", true);
1907
1908                         var query = "?op=rpc&subop=massSubscribe&ids="+
1909                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1910
1911                         new Ajax.Request("backend.php", {
1912                                 parameters: query,
1913                                 onComplete: function(transport) {
1914
1915                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1916                                         var nf_value = nf.getAttribute("value");
1917
1918                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1919
1920                                         if (inPreferences()) {
1921                                                 updateFeedList();
1922                                         } else {
1923                                                 setTimeout('updateFeedList(false, false)', 50);
1924                                         }
1925                                 } });
1926
1927                 } else {
1928                         alert(__("No feeds are selected."));
1929                 }
1930
1931         } catch (e) {
1932                 exception_error("feedBrowserSubscribe", e);
1933         }
1934 }
1935
1936 function feedArchiveRemove() {
1937         try {
1938
1939                 var selected = getSelectedFeedsFromBrowser();
1940
1941                 if (selected.length > 0) {
1942
1943                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1944
1945                         if (confirm(pr)) {
1946                                 Element.show('feed_browser_spinner');
1947
1948                                 var query = "?op=rpc&subop=remarchived&ids=" +
1949                                         param_escape(selected.toString());;
1950
1951                                 new Ajax.Request("backend.php", {
1952                                         parameters: query,
1953                                         onComplete: function(transport) {
1954                                                 updateFeedBrowser();
1955                                         } });
1956                         }
1957
1958                 } else {
1959                         alert(__("No feeds are selected."));
1960                 }
1961
1962         } catch (e) {
1963                 exception_error("feedArchiveRemove", e);
1964         }
1965 }
1966
1967 function uploadIconHandler(rc) {
1968         try {
1969                 switch (rc) {
1970                         case 0:
1971                                 notify_info("Upload complete.");
1972                                 if (inPreferences()) {
1973                                         updateFeedList();
1974                                 } else {
1975                                         setTimeout('updateFeedList(false, false)', 50);
1976                                 }
1977                                 break;
1978                         case 1:
1979                                 notify_error("Upload failed: icon is too big.");
1980                                 break;
1981                         case 2:
1982                                 notify_error("Upload failed.");
1983                                 break;
1984                 }
1985
1986         } catch (e) {
1987                 exception_error("uploadIconHandler", e);
1988         }
1989 }
1990
1991 function removeFeedIcon(id) {
1992
1993         try {
1994
1995                 if (confirm(__("Remove stored feed icon?"))) {
1996                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
1997
1998                         console.log(query);
1999
2000                         notify_progress("Removing feed icon...", true);
2001
2002                         new Ajax.Request("backend.php", {
2003                                 parameters: query,
2004                                 onComplete: function(transport) {
2005                                         notify_info("Feed icon removed.");
2006                                         if (inPreferences()) {
2007                                                 updateFeedList();
2008                                         } else {
2009                                                 setTimeout('updateFeedList(false, false)', 50);
2010                                         }
2011                                 } });
2012                 }
2013
2014                 return false;
2015         } catch (e) {
2016                 exception_error("uploadFeedIcon", e);
2017         }
2018 }
2019
2020 function uploadFeedIcon() {
2021
2022         try {
2023
2024                 var file = $("icon_file");
2025
2026                 if (file.value.length == 0) {
2027                         alert(__("Please select an image file to upload."));
2028                 } else {
2029                         if (confirm(__("Upload new icon for this feed?"))) {
2030                                 notify_progress("Uploading, please wait...", true);
2031                                 return true;
2032                         }
2033                 }
2034
2035                 return false;
2036
2037         } catch (e) {
2038                 exception_error("uploadFeedIcon", e);
2039         }
2040 }
2041
2042 function addLabel(select, callback) {
2043
2044         try {
2045
2046                 var caption = prompt(__("Please enter label caption:"), "");
2047
2048                 if (caption != undefined) {
2049
2050                         if (caption == "") {
2051                                 alert(__("Can't create label: missing caption."));
2052                                 return false;
2053                         }
2054
2055                         var query = "?op=pref-labels&subop=add&caption=" +
2056                                 param_escape(caption);
2057
2058                         if (select)
2059                                 query += "&output=select";
2060
2061                         notify_progress("Loading, please wait...", true);
2062
2063                         if (inPreferences() && !select) active_tab = "labelConfig";
2064
2065                         new Ajax.Request("backend.php", {
2066                                 parameters: query,
2067                                 onComplete: function(transport) {
2068                                         if (callback) {
2069                                                 callback(transport);
2070                                         } else if (inPreferences()) {
2071                                                 infobox_submit_callback2(transport);
2072                                         } else {
2073                                                 updateFeedList();
2074                                         }
2075                         } });
2076
2077                 }
2078
2079         } catch (e) {
2080                 exception_error("addLabel", e);
2081         }
2082 }
2083
2084 function quickAddFeed() {
2085         displayDlg('quickAddFeed', '',
2086            function () {$('feed_url').focus();});
2087 }
2088
2089 function quickAddFilter() {
2090         displayDlg('quickAddFilter', '',
2091            function () {document.forms['filter_add_form'].reg_exp.focus();});
2092 }
2093
2094 function unsubscribeFeed(feed_id, title) {
2095
2096         var msg = __("Unsubscribe from %s?").replace("%s", title);
2097
2098         if (title == undefined || confirm(msg)) {
2099                 notify_progress("Removing feed...");
2100
2101                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
2102
2103                 new Ajax.Request("backend.php", {
2104                         parameters: query,
2105                         onComplete: function(transport) {
2106
2107                                         closeInfoBox();
2108
2109                                         if (inPreferences()) {
2110                                                 updateFeedList();
2111                                         } else {
2112                                                 dlg_frefresh_callback(transport, feed_id);
2113                                         }
2114
2115                                 } });
2116         }
2117
2118         return false;
2119 }
2120
2121
2122 function backend_sanity_check_callback(transport) {
2123
2124         try {
2125
2126                 if (sanity_check_done) {
2127                         fatalError(11, "Sanity check request received twice. This can indicate "+
2128                       "presence of Firebug or some other disrupting extension. "+
2129                                 "Please disable it and try again.");
2130                         return;
2131                 }
2132
2133                 if (!transport.responseXML) {
2134                         if (!store) {
2135                                 fatalError(3, "Sanity check: Received reply is not XML",
2136                                         transport.responseText);
2137                                 return;
2138                         } else {
2139                                 init_offline();
2140                                 return;
2141                         }
2142                 }
2143
2144                 if (getURLParam("offline")) {
2145                         return init_offline();
2146                 }
2147
2148                 var reply = transport.responseXML.getElementsByTagName("error")[0];
2149
2150                 if (!reply) {
2151                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
2152                         return;
2153                 }
2154
2155                 var error_code = reply.getAttribute("error-code");
2156
2157                 if (error_code && error_code != 0) {
2158                         return fatalError(error_code, reply.getAttribute("error-msg"));
2159                 }
2160
2161                 console.log("sanity check ok");
2162
2163                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
2164
2165                 if (params) {
2166                         console.log('reading init-params...');
2167
2168                         params = JSON.parse(params.firstChild.nodeValue);
2169
2170                         if (params) {
2171                                 for (k in params) {
2172
2173                                         var v = params[k];
2174
2175                                         console.log("IP: " + k + " => " + v);
2176
2177                                         if (db) {
2178                                                 db.execute("DELETE FROM init_params WHERE key = ?", [k]);
2179                                                 db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
2180                                                         [k, v]);
2181                                         }
2182                                 }
2183                         }
2184
2185                         init_params = params;
2186                 }
2187
2188                 sanity_check_done = true;
2189
2190                 init_second_stage();
2191
2192         } catch (e) {
2193                 exception_error("backend_sanity_check_callback", e, transport);
2194         }
2195 }
2196
2197 function has_local_storage() {
2198         return false;
2199 /*      try {
2200                 return 'localStorage' in window && window['localStorage'] != null;
2201         } catch (e) {
2202                 return false;
2203         } */
2204 }
2205
2206 function catSelectOnChange(elem) {
2207         try {
2208                 var value = elem[elem.selectedIndex].value;
2209                 var def = elem.getAttribute('default');
2210
2211                 if (value == "ADD_CAT") {
2212
2213                         if (def)
2214                                 dropboxSelect(elem, def);
2215                         else
2216                                 elem.selectedIndex = 0;
2217
2218                         quickAddCat(elem);
2219                 }
2220
2221         } catch (e) {
2222                 exception_error("catSelectOnChange", e);
2223         }
2224 }
2225
2226 function quickAddCat(elem) {
2227         try {
2228                 var cat = prompt(__("Please enter category title:"));
2229
2230                 if (cat) {
2231
2232                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
2233
2234                         notify_progress("Loading, please wait...", true);
2235
2236                         new Ajax.Request("backend.php", {
2237                                 parameters: query,
2238                                 onComplete: function (transport) {
2239                                         var response = transport.responseXML;
2240                                         var select = response.getElementsByTagName("select")[0];
2241                                         var options = select.getElementsByTagName("option");
2242
2243                                         dropbox_replace_options(elem, options);
2244
2245                                         notify('');
2246
2247                         } });
2248
2249                 }
2250
2251         } catch (e) {
2252                 exception_error("quickAddCat", e);
2253         }
2254 }
2255
2256 function genUrlChangeKey(feed, is_cat) {
2257
2258         try {
2259                 var ok = confirm(__("Generate new syndication address for this feed?"));
2260
2261                 if (ok) {
2262
2263                         notify_progress("Trying to change address...", true);
2264
2265                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
2266                                 "&is_cat=" + param_escape(is_cat);
2267
2268                         new Ajax.Request("backend.php", {
2269                                 parameters: query,
2270                                 onComplete: function(transport) {
2271                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
2272
2273                                                 var e = $('gen_feed_url');
2274
2275                                                 if (new_link) {
2276
2277                                                         new_link = new_link.firstChild.nodeValue;
2278
2279                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
2280                                                                 "&amp;key=" + new_link);
2281
2282                                                         e.href = e.href.replace(/\&amp;key=.*$/,
2283                                                                 "&amp;key=" + new_link);
2284
2285                                                         new Effect.Highlight(e);
2286
2287                                                         notify('');
2288
2289                                                 } else {
2290                                                         notify_error("Could not change feed URL.");
2291                                                 }
2292                                 } });
2293                 }
2294         } catch (e) {
2295                 exception_error("genUrlChangeKey", e);
2296         }
2297         return false;
2298 }
2299
2300 function labelSelectOnChange(elem) {
2301         try {
2302                 var value = elem[elem.selectedIndex].value;
2303                 var def = elem.getAttribute('default');
2304
2305                 if (value == "ADD_LABEL") {
2306
2307                         if (def)
2308                                 dropboxSelect(elem, def);
2309                         else
2310                                 elem.selectedIndex = 0;
2311
2312                         addLabel(elem, function(transport) {
2313
2314                                         try {
2315
2316                                                 var response = transport.responseXML;
2317                                                 var select = response.getElementsByTagName("select")[0];
2318                                                 var options = select.getElementsByTagName("option");
2319
2320                                                 dropbox_replace_options(elem, options);
2321
2322                                                 notify('');
2323                                         } catch (e) {
2324                                                 exception_error("addLabel", e);
2325                                         }
2326                         });
2327                 }
2328
2329         } catch (e) {
2330                 exception_error("labelSelectOnChange", e);
2331         }
2332 }
2333
2334 function dropbox_replace_options(elem, options) {
2335
2336         try {
2337                 while (elem.hasChildNodes())
2338                         elem.removeChild(elem.firstChild);
2339
2340                 var sel_idx = -1;
2341
2342                 for (var i = 0; i < options.length; i++) {
2343                         var text = options[i].firstChild.nodeValue;
2344                         var value = options[i].getAttribute("value");
2345
2346                         if (value == undefined) value = text;
2347
2348                         var issel = options[i].getAttribute("selected") == "1";
2349
2350                         var option = new Option(text, value, issel);
2351
2352                         if (options[i].getAttribute("disabled"))
2353                                 option.setAttribute("disabled", true);
2354
2355                         elem.insert(option);
2356
2357                         if (issel) sel_idx = i;
2358                 }
2359
2360                 // Chrome doesn't seem to just select stuff when you pass new Option(x, y, true)
2361                 if (sel_idx >= 0) elem.selectedIndex = sel_idx;
2362
2363         } catch (e) {
2364                 exception_error("dropbox_replace_options", e);
2365         }
2366 }