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