functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 0;
   4 var async_counters_work = false;
   5 var sanity_check_done = false;
   6
   7 /* add method to remove element from array */
   8
   9 Array.prototype.remove = function(s) {
  10         for (var i=0; i < this.length; i++) {
  11                 if (s == this[i]) this.splice(i, 1);
  12         }
  13 }
  14
  15 /* create console.log if it doesn't exist */
  16
  17 if (!window.console) console = {};
  18 console.log = console.log || function(msg) { debug(msg); };
  19 console.warn = console.warn || function(msg) { debug(msg); };
  20 console.error = console.error || function(msg) { debug(msg); };
  21
  22 function exception_error(location, e, ext_info) {
  23         var msg = format_exception_error(location, e);
  24
  25         if (!ext_info) ext_info = false;
  26
  27         disableHotkeys();
  28
  29         try {
  30
  31                 var ebc = $("xebContent");
  32
  33                 if (ebc) {
  34
  35                         Element.show("dialog_overlay");
  36                         Element.show("errorBoxShadow");
  37
  38                         if (ext_info) {
  39                                 if (ext_info.responseText) {
  40                                         ext_info = ext_info.responseText;
  41                                 }
  42                         }
  43
  44                         ebc.innerHTML =
  45                                 "<div><b>Error message:</b></div>" +
  46                                 "<pre>" + msg + "</pre>";
  47
  48                         if (ext_info) {
  49                                 ebc.innerHTML += "<div><b>Additional information:</b></div>" +
  50                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  51                         }
  52
  53                         ebc.innerHTML += "<div><b>Stack trace:</b></div>" +
  54                                 "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  55
  56                 } else {
  57                         alert(msg);
  58                 }
  59
  60         } catch (e) {
  61                 alert(msg);
  62
  63         }
  64
  65 }
  66
  67 function format_exception_error(location, e) {
  68         var msg;
  69
  70         if (e.fileName) {
  71                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  72
  73                 msg = "Exception: " + e.name + ", " + e.message +
  74                         "\nFunction: " + location + "()" +
  75                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  76
  77         } else if (e.description) {
  78                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  79         } else {
  80                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  81         }
  82
  83         console.error("EXCEPTION: " + msg);
  84
  85         return msg;
  86 }
  87
  88
  89 function disableHotkeys() {
  90         hotkeys_enabled = false;
  91 }
  92
  93 function enableHotkeys() {
  94         hotkeys_enabled = true;
  95 }
  96
  97 function param_escape(arg) {
  98         if (typeof encodeURIComponent != 'undefined')
  99                 return encodeURIComponent(arg);
 100         else
 101                 return escape(arg);
 102 }
 103
 104 function param_unescape(arg) {
 105         if (typeof decodeURIComponent != 'undefined')
 106                 return decodeURIComponent(arg);
 107         else
 108                 return unescape(arg);
 109 }
 110
 111 function delay(gap) {
 112         var then,now;
 113         then=new Date().getTime();
 114         now=then;
 115         while((now-then)<gap) {
 116                 now=new Date().getTime();
 117         }
 118 }
 119
 120 var notify_hide_timerid = false;
 121
 122 function hide_notify() {
 123         var n = $("notify");
 124         if (n) {
 125                 n.style.display = "none";
 126         }
 127 }
 128
 129 function notify_silent_next() {
 130         notify_silent = true;
 131 }
 132
 133 function notify_real(msg, no_hide, n_type) {
 134
 135         if (notify_silent) {
 136                 notify_silent = false;
 137                 return;
 138         }
 139
 140         var n = $("notify");
 141         var nb = $("notify_body");
 142
 143         if (!n || !nb) return;
 144
 145         if (notify_hide_timerid) {
 146                 window.clearTimeout(notify_hide_timerid);
 147         }
 148
 149         if (msg == "") {
 150                 if (n.style.display == "block") {
 151                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 152                 }
 153                 return;
 154         } else {
 155                 n.style.display = "block";
 156         }
 157
 158         /* types:
 159
 160                 1 - generic
 161                 2 - progress
 162                 3 - error
 163                 4 - info
 164
 165         */
 166
 167         if (typeof __ != 'undefined') {
 168                 msg = __(msg);
 169         }
 170
 171         if (n_type == 1) {
 172                 n.className = "notify";
 173         } else if (n_type == 2) {
 174                 n.className = "notifyProgress";
 175                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 176         } else if (n_type == 3) {
 177                 n.className = "notifyError";
 178                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 179         } else if (n_type == 4) {
 180                 n.className = "notifyInfo";
 181                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 182         }
 183
 184 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 185
 186         nb.innerHTML = msg;
 187
 188         if (!no_hide) {
 189                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 190         }
 191 }
 192
 193 function notify(msg, no_hide) {
 194         notify_real(msg, no_hide, 1);
 195 }
 196
 197 function notify_progress(msg, no_hide) {
 198         notify_real(msg, no_hide, 2);
 199 }
 200
 201 function notify_error(msg, no_hide) {
 202         notify_real(msg, no_hide, 3);
 203
 204 }
 205
 206 function notify_info(msg, no_hide) {
 207         notify_real(msg, no_hide, 4);
 208 }
 209
 210 function printLockingError() {
 211         notify_info("Please wait until operation finishes.");
 212 }
 213
 214 function cleanSelected(element) {
 215         var content = $(element);
 216
 217         for (i = 0; i < content.rows.length; i++) {
 218                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 219         }
 220 }
 221
 222 function getVisibleUnreadHeadlines() {
 223         var content = $("headlinesList");
 224
 225         var rows = new Array();
 226
 227         if (!content) return rows;
 228
 229         for (i = 0; i < content.rows.length; i++) {
 230                 var row_id = content.rows[i].id.replace("RROW-", "");
 231                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 232                                 rows.push(row_id);
 233                 }
 234         }
 235         return rows;
 236 }
 237
 238 function getVisibleHeadlineIds() {
 239
 240         var content = $("headlinesList");
 241
 242         var rows = new Array();
 243
 244         if (!content) return rows;
 245
 246         for (i = 0; i < content.rows.length; i++) {
 247                 var row_id = content.rows[i].id.replace("RROW-", "");
 248                 if (row_id.length > 0) {
 249                                 rows.push(row_id);
 250                 }
 251         }
 252         return rows;
 253 }
 254
 255 function getFirstVisibleHeadlineId() {
 256         if (isCdmMode()) {
 257                 var rows = cdmGetVisibleArticles();
 258                 return rows[0];
 259         } else {
 260                 var rows = getVisibleHeadlineIds();
 261                 return rows[0];
 262         }
 263 }
 264
 265 function getLastVisibleHeadlineId() {
 266         if (isCdmMode()) {
 267                 var rows = cdmGetVisibleArticles();
 268                 return rows[rows.length-1];
 269         } else {
 270                 var rows = getVisibleHeadlineIds();
 271                 return rows[rows.length-1];
 272         }
 273 }
 274
 275 function markHeadline(id) {
 276         var row = $("RROW-" + id);
 277         if (row) {
 278                 var is_active = false;
 279
 280                 if (row.className.match("Active")) {
 281                         is_active = true;
 282                 }
 283                 row.className = row.className.replace("Selected", "");
 284                 row.className = row.className.replace("Active", "");
 285                 row.className = row.className.replace("Insensitive", "");
 286
 287                 if (is_active) {
 288                         row.className = row.className = "Active";
 289                 }
 290
 291                 var check = $("RCHK-" + id);
 292
 293                 if (check) {
 294                         check.checked = true;
 295                 }
 296
 297                 row.className = row.className + "Selected";
 298
 299         }
 300 }
 301
 302 function getFeedIds() {
 303         var content = $("feedsList");
 304
 305         var rows = new Array();
 306
 307         for (i = 0; i < content.rows.length; i++) {
 308                 var id = content.rows[i].id.replace("FEEDR-", "");
 309                 if (id.length > 0) {
 310                         rows.push(id);
 311                 }
 312         }
 313
 314         return rows;
 315 }
 316
 317 function setCookie(name, value, lifetime, path, domain, secure) {
 318
 319         var d = false;
 320
 321         if (lifetime) {
 322                 d = new Date();
 323                 d.setTime(d.getTime() + (lifetime * 1000));
 324         }
 325
 326         console.log("setCookie: " + name + " => " + value + ": " + d);
 327
 328         int_setCookie(name, value, d, path, domain, secure);
 329
 330 }
 331
 332 function int_setCookie(name, value, expires, path, domain, secure) {
 333         document.cookie= name + "=" + escape(value) +
 334                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 335                 ((path) ? "; path=" + path : "") +
 336                 ((domain) ? "; domain=" + domain : "") +
 337                 ((secure) ? "; secure" : "");
 338 }
 339
 340 function delCookie(name, path, domain) {
 341         if (getCookie(name)) {
 342                 document.cookie = name + "=" +
 343                 ((path) ? ";path=" + path : "") +
 344                 ((domain) ? ";domain=" + domain : "" ) +
 345                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 346         }
 347 }
 348
 349
 350 function getCookie(name) {
 351
 352         var dc = document.cookie;
 353         var prefix = name + "=";
 354         var begin = dc.indexOf("; " + prefix);
 355         if (begin == -1) {
 356             begin = dc.indexOf(prefix);
 357             if (begin != 0) return null;
 358         }
 359         else {
 360             begin += 2;
 361         }
 362         var end = document.cookie.indexOf(";", begin);
 363         if (end == -1) {
 364             end = dc.length;
 365         }
 366         return unescape(dc.substring(begin + prefix.length, end));
 367 }
 368
 369 function gotoPreferences() {
 370         document.location.href = "prefs.php";
 371 }
 372
 373 function gotoMain() {
 374         document.location.href = "tt-rss.php";
 375 }
 376
 377 function gotoExportOpml() {
 378         document.location.href = "opml.php?op=Export";
 379 }
 380
 381 function parse_counters(reply, scheduled_call) {
 382         try {
 383
 384                 var feeds_found = 0;
 385
 386                 var elems = reply.getElementsByTagName("counter");
 387
 388                 for (var l = 0; l < elems.length; l++) {
 389
 390                         var id = elems[l].getAttribute("id");
 391                         var t = elems[l].getAttribute("type");
 392                         var ctr = elems[l].getAttribute("counter");
 393                         var error = elems[l].getAttribute("error");
 394                         var has_img = elems[l].getAttribute("hi");
 395                         var updated = elems[l].getAttribute("updated");
 396                         var title = elems[l].getAttribute("title");
 397                         var xmsg = elems[l].getAttribute("xmsg");
 398
 399                         if (id == "global-unread") {
 400
 401                                 if (ctr > global_unread) {
 402                                         offlineDownloadStart(1);
 403                                 }
 404
 405                                 global_unread = ctr;
 406                                 updateTitle();
 407                                 continue;
 408                         }
 409
 410                         if (id == "subscribed-feeds") {
 411                                 feeds_found = ctr;
 412                                 continue;
 413                         }
 414
 415                         if (t == "category") {
 416                                 var catctr = $("FCATCTR-" + id);
 417                                 if (catctr) {
 418                                         catctr.innerHTML = "(" + ctr + ")";
 419                                         if (ctr > 0) {
 420                                                 catctr.className = "catCtrHasUnread";
 421                                         } else {
 422                                                 catctr.className = "catCtrNoUnread";
 423                                         }
 424                                 }
 425                                 continue;
 426                         }
 427
 428                         var feedctr = $("FEEDCTR-" + id);
 429                         var feedu = $("FEEDU-" + id);
 430                         var feedr = $("FEEDR-" + id);
 431                         var feed_img = $("FIMG-" + id);
 432                         var feedlink = $("FEEDL-" + id);
 433                         var feedupd = $("FLUPD-" + id);
 434
 435                         if (updated && feedlink) {
 436                                 if (error) {
 437                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 438                                 } else {
 439                                         feedlink.title = "Updated: " + updated;
 440                                 }
 441                         }
 442
 443                         if (feedupd) {
 444                                 if (!updated) updated = "";
 445
 446                                 if (error) {
 447                                         if (xmsg) {
 448                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 449                                         } else {
 450                                                 feedupd.innerHTML = updated + " (Error)";
 451                                         }
 452                                 } else {
 453                                         if (xmsg) {
 454                                                 feedupd.innerHTML = updated + " " + xmsg;
 455                                         } else {
 456                                                 feedupd.innerHTML = updated;
 457                                         }
 458                                 }
 459                         }
 460
 461                         if (has_img && feed_img) {
 462                                 if (!feed_img.src.match(id + ".ico")) {
 463                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 464                                 }
 465                         }
 466
 467                         if (feedlink && title) {
 468                                 feedlink.innerHTML = title;
 469                         }
 470
 471                         if (feedctr && feedu && feedr) {
 472
 473                                 if (parseInt(ctr) > 0 &&
 474                                                 parseInt(feedu.innerHTML) < parseInt(ctr) &&
 475                                                 id == getActiveFeedId() && scheduled_call) {
 476
 477                                         displayNewContentPrompt(id);
 478                                 }
 479
 480                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 481
 482                                 feedu.innerHTML = ctr;
 483
 484                                 if (error) {
 485                                         feedr.className = feedr.className.replace("feed", "error");
 486                                 } else if (id > 0) {
 487                                         feedr.className = feedr.className.replace("error", "feed");
 488                                 }
 489
 490                                 if (ctr > 0) {
 491                                         feedctr.className = "feedCtrHasUnread";
 492                                         if (!feedr.className.match("Unread")) {
 493                                                 var is_selected = feedr.className.match("Selected");
 494
 495                                                 feedr.className = feedr.className.replace("Selected", "");
 496                                                 feedr.className = feedr.className.replace("Unread", "");
 497
 498                                                 feedr.className = feedr.className + "Unread";
 499
 500                                                 if (is_selected) {
 501                                                         feedr.className = feedr.className + "Selected";
 502                                                 }
 503
 504                                         }
 505
 506                                         if (row_needs_hl &&
 507                                                         !getInitParam("theme_options").match('no_highlights')) {
 508                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 509                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 510
 511                                                 cache_invalidate("F:" + id);
 512                                         }
 513                                 } else {
 514                                         feedctr.className = "feedCtrNoUnread";
 515                                         feedr.className = feedr.className.replace("Unread", "");
 516                                 }
 517                         }
 518                 }
 519
 520                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 521
 522                 var feeds_stored = number_of_feeds;
 523
 524                 console.log("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 525
 526                 if (feeds_stored != feeds_found) {
 527                         number_of_feeds = feeds_found;
 528
 529                         if (feeds_stored != 0 && feeds_found != 0) {
 530                                 console.log("Subscribed feed number changed, refreshing feedlist");
 531                                 setTimeout('updateFeedList(false, false)', 50);
 532                         }
 533                 } else {
 534 /*                      var fl = $("feeds-frame").innerHTML;
 535                         if (fl) {
 536                                 cache_invalidate("FEEDLIST");
 537                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 538                         } */
 539                 }
 540
 541         } catch (e) {
 542                 exception_error("parse_counters", e);
 543         }
 544 }
 545
 546 function parse_counters_reply(transport, scheduled_call) {
 547
 548         if (!transport.responseXML) {
 549                 notify_error("Backend did not return valid XML", true);
 550                 return;
 551         }
 552
 553         var reply = transport.responseXML.firstChild;
 554
 555         if (!reply) {
 556                 notify_error("Backend did not return expected XML object", true);
 557                 updateTitle("");
 558                 return;
 559         }
 560
 561         if (!transport_error_check(transport)) return;
 562
 563         var counters = reply.getElementsByTagName("counters")[0];
 564
 565         parse_counters(counters, scheduled_call);
 566
 567         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 568
 569         parse_runtime_info(runtime_info);
 570
 571         if (feedsSortByUnread()) {
 572                 resort_feedlist();
 573         }
 574
 575         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 576
 577 }
 578
 579 function all_counters_callback2(transport, async_call) {
 580         try {
 581                 if (async_call) async_counters_work = true;
 582
 583                 if (offline_mode) return;
 584
 585                 console.log("<b>all_counters_callback2 IN: " + transport + "</b>");
 586                 parse_counters_reply(transport);
 587                 console.log("<b>all_counters_callback2 OUT: " + transport + "</b>");
 588
 589         } catch (e) {
 590                 exception_error("all_counters_callback2", e, transport);
 591         }
 592 }
 593
 594 function get_feed_unread(id) {
 595         try {
 596                 return parseInt($("FEEDU-" + id).innerHTML);
 597         } catch (e) {
 598                 return -1;
 599         }
 600 }
 601
 602 function get_cat_unread(id) {
 603         try {
 604                 var ctr = $("FCATCTR-" + id).innerHTML;
 605                 ctr = ctr.replace("(", "");
 606                 ctr = ctr.replace(")", "");
 607                 return parseInt(ctr);
 608         } catch (e) {
 609                 return -1;
 610         }
 611 }
 612
 613 function get_feed_entry_unread(elem) {
 614
 615         var id = elem.id.replace("FEEDR-", "");
 616
 617         if (id <= 0) {
 618                 return -1;
 619         }
 620
 621         try {
 622                 return parseInt($("FEEDU-" + id).innerHTML);
 623         } catch (e) {
 624                 return -1;
 625         }
 626 }
 627
 628 function get_feed_entry_name(elem) {
 629         var id = elem.id.replace("FEEDR-", "");
 630         return getFeedName(id);
 631 }
 632
 633
 634 function resort_category(node, cat_mode) {
 635
 636         try {
 637
 638                 console.log("resort_category: " + node + " CM=" + cat_mode);
 639
 640                 var by_unread = feedsSortByUnread();
 641
 642                 var list = node.getElementsByTagName("LI");
 643
 644                 for (i = 0; i < list.length; i++) {
 645
 646                         for (j = i+1; j < list.length; j++) {
 647
 648                                 var tmp_val = get_feed_entry_unread(list[i]);
 649                                 var cur_val = get_feed_entry_unread(list[j]);
 650
 651                                 var tmp_name = get_feed_entry_name(list[i]);
 652                                 var cur_name = get_feed_entry_name(list[j]);
 653
 654                                 var valid_pair = cat_mode || (list[i].id.match(/FEEDR-[0-9]/) &&
 655                                                 list[j].id.match(/FEEDR-[0-9]/));
 656
 657                                 if (valid_pair && ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name)))) {
 658                                         tempnode_i = list[i].cloneNode(true);
 659                                         tempnode_j = list[j].cloneNode(true);
 660                                         node.replaceChild(tempnode_i, list[j]);
 661                                         node.replaceChild(tempnode_j, list[i]);
 662                                 }
 663                         }
 664                 }
 665
 666         } catch (e) {
 667                 exception_error("resort_category", e);
 668         }
 669
 670 }
 671
 672 function resort_feedlist() {
 673         console.log("resort_feedlist");
 674
 675         if ($("FCATLIST--1")) {
 676
 677                 var lists = document.getElementsByTagName("UL");
 678
 679                 for (var i = 0; i < lists.length; i++) {
 680                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 681                                 resort_category(lists[i], true);
 682                         }
 683                 }
 684
 685         } else {
 686                 resort_category($("feedList"), false);
 687         }
 688 }
 689
 690 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 691   * * @author Sundar Dorai-Raj
 692   * * Email: sdoraira@vt.edu
 693   * * This program is free software; you can redistribute it and/or
 694   * * modify it under the terms of the GNU General Public License
 695   * * as published by the Free Software Foundation; either version 2
 696   * * of the License, or (at your option) any later version,
 697   * * provided that any use properly credits the author.
 698   * * This program is distributed in the hope that it will be useful,
 699   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 700   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 701   * * GNU General Public License for more details at http://www.gnu.org * * */
 702
 703   var numbers=".0123456789";
 704   function isNumeric(x) {
 705     // is x a String or a character?
 706     if(x.length>1) {
 707       // remove negative sign
 708       x=Math.abs(x)+"";
 709       for(j=0;j<x.length;j++) {
 710         // call isNumeric recursively for each character
 711         number=isNumeric(x.substring(j,j+1));
 712         if(!number) return number;
 713       }
 714       return number;
 715     }
 716     else {
 717       // if x is number return true
 718       if(numbers.indexOf(x)>=0) return true;
 719       return false;
 720     }
 721   }
 722
 723
 724 function hideOrShowFeeds(hide) {
 725
 726         try {
 727
 728         console.log("hideOrShowFeeds: " + hide);
 729
 730         if ($("FCATLIST--1")) {
 731
 732                 var lists = document.getElementsByTagName("UL");
 733
 734                 for (var i = 0; i < lists.length; i++) {
 735                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 736
 737                                 var id = lists[i].id.replace("FCATLIST-", "");
 738                                 hideOrShowFeedsCategory(id, hide);
 739                         }
 740                 }
 741
 742         } else {
 743                 hideOrShowFeedsCategory(null, hide);
 744         }
 745
 746         } catch (e) {
 747                 exception_error("hideOrShowFeeds", e);
 748         }
 749 }
 750
 751 function hideOrShowFeedsCategory(id, hide) {
 752
 753         try {
 754
 755                 var node = null;
 756                 var cat_node = null;
 757
 758                 if (id) {
 759                         node = $("FCATLIST-" + id);
 760                         cat_node = $("FCAT-" + id);
 761                 } else {
 762                         node = $("feedList"); // no categories
 763                 }
 764
 765         //      console.log("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 766
 767                 var cat_unread = 0;
 768
 769                 if (!node) {
 770                         console.log("hideOrShowFeeds: passed node is null, aborting");
 771                         return;
 772                 }
 773
 774         //      console.log("cat: " + node.id);
 775
 776                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 777                         for (i = 0; i < node.childNodes.length; i++) {
 778                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 779
 780                                 if (node.childNodes[i].style != undefined) {
 781
 782                                         var has_unread = (node.childNodes[i].className != "feed" &&
 783                                                 node.childNodes[i].className != "label" &&
 784                                                 !(!getInitParam("hide_read_shows_special") &&
 785                                                         node.childNodes[i].className == "virt") &&
 786                                                 node.childNodes[i].className != "error" &&
 787                                                 node.childNodes[i].className != "tag");
 788
 789         //                              console.log(node.childNodes[i].id + " --> " + has_unread);
 790
 791                                         if (hide && !has_unread) {
 792                                                 //node.childNodes[i].style.display = "none";
 793                                                 var id = node.childNodes[i].id;
 794                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 795                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 796                                         }
 797
 798                                         if (!hide) {
 799                                                 node.childNodes[i].style.display = "list-item";
 800                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 801                                         }
 802
 803                                         if (has_unread) {
 804                                                 node.childNodes[i].style.display = "list-item";
 805                                                 cat_unread++;
 806                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 807                                                 //Effect.Highlight(node.childNodes[i]);
 808                                         }
 809                                 }
 810                         }
 811                 }
 812
 813         //      console.log("end cat: " + node.id + " unread " + cat_unread);
 814
 815                 if (cat_node) {
 816
 817                         if (cat_unread == 0) {
 818                                 if (cat_node.style == undefined) {
 819                                         console.log("ERROR: supplied cat_node " + cat_node +
 820                                                 " has no styles. WTF?");
 821                                         return;
 822                                 }
 823                                 if (hide) {
 824                                         //cat_node.style.display = "none";
 825                                         Effect.Fade(cat_node, {duration : 0.3,
 826                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 827                                 } else {
 828                                         cat_node.style.display = "list-item";
 829                                 }
 830                         } else {
 831                                 try {
 832                                         cat_node.style.display = "list-item";
 833                                 } catch (e) {
 834                                         console.log(e);
 835                                 }
 836                         }
 837                 }
 838
 839 //      console.log("unread for category: " + cat_unread);
 840
 841         } catch (e) {
 842                 exception_error("hideOrShowFeedsCategory", e);
 843         }
 844 }
 845
 846 function selectTableRow(r, do_select) {
 847         r.className = r.className.replace("Selected", "");
 848
 849         if (do_select) {
 850                 r.className = r.className + "Selected";
 851         }
 852 }
 853
 854 function selectTableRowById(elem_id, check_id, do_select) {
 855
 856         try {
 857
 858                 var row = $(elem_id);
 859
 860                 if (row) {
 861                         selectTableRow(row, do_select);
 862                 }
 863
 864                 var check = $(check_id);
 865
 866                 if (check) {
 867                         check.checked = do_select;
 868                 }
 869         } catch (e) {
 870                 exception_error("selectTableRowById", e);
 871         }
 872 }
 873
 874 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 875         classcheck, reset_others) {
 876
 877         var content = $(content_id);
 878
 879         if (!content) {
 880                 console.log("[selectTableRows] Element " + content_id + " not found.");
 881                 return;
 882         }
 883
 884         for (i = 0; i < content.rows.length; i++) {
 885                 if (Element.visible(content.rows[i])) {
 886                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 887
 888                                 if (content.rows[i].id.match(prefix)) {
 889                                         selectTableRow(content.rows[i], do_select);
 890
 891                                         var row_id = content.rows[i].id.replace(prefix, "");
 892                                         var check = $(check_prefix + row_id);
 893
 894                                         if (check) {
 895                                                 check.checked = do_select;
 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                         } else if (reset_others) {
 909                                 selectTableRow(content.rows[i], false);
 910
 911                                 var row_id = content.rows[i].id.replace(prefix, "");
 912                                 var check = $(check_prefix + row_id);
 913
 914                                 if (check) {
 915                                         check.checked = false;
 916                                 }
 917
 918                         }
 919                 }
 920         }
 921 }
 922
 923 function getSelectedTableRowIds(content_id, prefix) {
 924
 925         var content = $(content_id);
 926
 927         if (!content) {
 928                 console.log("[getSelectedTableRowIds] Element " + content_id + " not found.");
 929                 return new Array();
 930         }
 931
 932         var sel_rows = new Array();
 933
 934         for (i = 0; i < content.rows.length; i++) {
 935                 if (content.rows[i].id.match(prefix) &&
 936                                 content.rows[i].className.match("Selected")) {
 937
 938                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 939                         sel_rows.push(row_id);
 940                 }
 941         }
 942
 943         return sel_rows;
 944
 945 }
 946
 947 function toggleSelectRowById(sender, id) {
 948         var row = $(id);
 949
 950         if (sender.checked) {
 951                 if (!row.className.match("Selected")) {
 952                         row.className = row.className + "Selected";
 953                 }
 954         } else {
 955                 if (row.className.match("Selected")) {
 956                         row.className = row.className.replace("Selected", "");
 957                 }
 958         }
 959 }
 960
 961 function toggleSelectListRow(sender) {
 962         var parent_row = sender.parentNode;
 963
 964         if (sender.checked) {
 965                 if (!parent_row.className.match("Selected")) {
 966                         parent_row.className = parent_row.className + "Selected";
 967                 }
 968         } else {
 969                 if (parent_row.className.match("Selected")) {
 970                         parent_row.className = parent_row.className.replace("Selected", "");
 971                 }
 972         }
 973 }
 974
 975 function tSR(sender) {
 976         return toggleSelectRow(sender);
 977 }
 978
 979 function toggleSelectRow(sender) {
 980         var parent_row = sender.parentNode.parentNode;
 981
 982         if (sender.checked) {
 983                 if (!parent_row.className.match("Selected")) {
 984                         parent_row.className = parent_row.className + "Selected";
 985                 }
 986         } else {
 987                 if (parent_row.className.match("Selected")) {
 988                         parent_row.className = parent_row.className.replace("Selected", "");
 989                 }
 990         }
 991 }
 992
 993 function getNextUnreadCat(id) {
 994         try {
 995                 var rows = $("feedList").getElementsByTagName("LI");
 996                 var feeds = new Array();
 997
 998                 var unread_only = true;
 999                 var is_cat = true;
1000
1001                 for (var i = 0; i < rows.length; i++) {
1002                         if (rows[i].id.match("FCAT-")) {
1003                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1004
1005                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1006
1007                                         if (cat_id >= 0) {
1008                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1009                                                         feeds.push(cat_id);
1010                                                 }
1011                                         }
1012                                 }
1013                         }
1014                 }
1015
1016                 var idx = feeds.indexOf(id);
1017                 if (idx != -1 && idx < feeds.length) {
1018                         return feeds[idx+1];
1019                 } else {
1020                         return feeds.shift();
1021                 }
1022
1023         } catch (e) {
1024                 exception_error("getNextUnreadCat", e);
1025         }
1026 }
1027
1028 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1029         try {
1030
1031 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1032
1033                 var rows = $("feedList").getElementsByTagName("LI");
1034                 var feeds = new Array();
1035
1036                 for (var i = 0; i < rows.length; i++) {
1037                         if (rows[i].id.match("FEEDR-")) {
1038
1039                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1040
1041                                         if (!unread_only ||
1042                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1043                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1044                                         }
1045                                 }
1046                         }
1047
1048                         if (rows[i].id.match("FCAT-")) {
1049                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1050
1051                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1052
1053                                         if (cat_id >= 0) {
1054                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1055                                                         feeds.push("CAT:"+cat_id);
1056                                                 }
1057                                         }
1058                                 }
1059                         }
1060                 }
1061
1062 //              alert(feeds.toString());
1063
1064                 if (!id) {
1065                         if (direction == "next") {
1066                                 return feeds.shift();
1067                         } else {
1068                                 return feeds.pop();
1069                         }
1070                 } else {
1071                         if (direction == "next") {
1072                                 if (is_cat) id = "CAT:" + id;
1073                                 var idx = feeds.indexOf(id);
1074                                 if (idx != -1 && idx < feeds.length) {
1075                                         return feeds[idx+1];
1076                                 } else {
1077                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1078                                 }
1079                         } else {
1080                                 if (is_cat) id = "CAT:" + id;
1081                                 var idx = feeds.indexOf(id);
1082                                 if (idx > 0) {
1083                                         return feeds[idx-1];
1084                                 } else {
1085                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1086                                 }
1087                         }
1088
1089                 }
1090
1091         } catch (e) {
1092                 exception_error("getRelativeFeedId2", e);
1093         }
1094 }
1095
1096 function getRelativeFeedId(list, id, direction, unread_only) {
1097         var rows = list.getElementsByTagName("LI");
1098         var feeds = new Array();
1099
1100         for (var i = 0; i < rows.length; i++) {
1101                 if (rows[i].id.match("FEEDR-")) {
1102
1103                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1104
1105                                 if (!unread_only ||
1106                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1107                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1108                                 }
1109                         }
1110                 }
1111         }
1112
1113         if (!id) {
1114                 if (direction == "next") {
1115                         return feeds.shift();
1116                 } else {
1117                         return feeds.pop();
1118                 }
1119         } else {
1120                 if (direction == "next") {
1121                         var idx = feeds.indexOf(id);
1122                         if (idx != -1 && idx < feeds.length) {
1123                                 return feeds[idx+1];
1124                         } else {
1125                                 return getRelativeFeedId(list, false, direction, unread_only);
1126                         }
1127                 } else {
1128                         var idx = feeds.indexOf(id);
1129                         if (idx > 0) {
1130                                 return feeds[idx-1];
1131                         } else {
1132                                 return getRelativeFeedId(list, false, direction, unread_only);
1133                         }
1134                 }
1135
1136         }
1137 }
1138
1139 function showBlockElement(id, h_id) {
1140         var elem = $(id);
1141
1142         if (elem) {
1143                 elem.style.display = "block";
1144
1145                 if (h_id) {
1146                         elem = $(h_id);
1147                         if (elem) {
1148                                 elem.style.display = "none";
1149                         }
1150                 }
1151         } else {
1152                 alert("[showBlockElement] can't find element with id " + id);
1153         }
1154 }
1155
1156 function appearBlockElement_afh(effect) {
1157
1158 }
1159
1160 function checkboxToggleElement(elem, id) {
1161         if (elem.checked) {
1162                 Effect.Appear(id, {duration : 0.5});
1163         } else {
1164                 Effect.Fade(id, {duration : 0.5});
1165         }
1166 }
1167
1168 function appearBlockElement(id, h_id) {
1169
1170         try {
1171                 if (h_id) {
1172                         Effect.Fade(h_id);
1173                 }
1174                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1175         } catch (e) {
1176                 exception_error("appearBlockElement", e);
1177         }
1178
1179 }
1180
1181 function hideParentElement(e) {
1182         e.parentNode.style.display = "none";
1183 }
1184
1185 function dropboxSelect(e, v) {
1186         for (i = 0; i < e.length; i++) {
1187                 if (e[i].value == v) {
1188                         e.selectedIndex = i;
1189                         break;
1190                 }
1191         }
1192 }
1193
1194 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1195 // bugfixed just a little bit :-)
1196 function getURLParam(strParamName){
1197   var strReturn = "";
1198   var strHref = window.location.href;
1199
1200   if (strHref.indexOf("#") == strHref.length-1) {
1201                 strHref = strHref.substring(0, strHref.length-1);
1202   }
1203
1204   if ( strHref.indexOf("?") > -1 ){
1205     var strQueryString = strHref.substr(strHref.indexOf("?"));
1206     var aQueryString = strQueryString.split("&");
1207     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1208       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1209         var aParam = aQueryString[iParam].split("=");
1210         strReturn = aParam[1];
1211         break;
1212       }
1213     }
1214   }
1215   return strReturn;
1216 }
1217
1218 function leading_zero(p) {
1219         var s = String(p);
1220         if (s.length == 1) s = "0" + s;
1221         return s;
1222 }
1223
1224 function make_timestamp() {
1225         var d = new Date();
1226
1227         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1228                         ":" + leading_zero(d.getSeconds());
1229 }
1230
1231
1232 function closeErrorBox() {
1233
1234         if (Element.visible("errorBoxShadow")) {
1235                 Element.hide("dialog_overlay");
1236                 Element.hide("errorBoxShadow");
1237
1238                 enableHotkeys();
1239         }
1240
1241         return false;
1242 }
1243
1244 function closeInfoBox(cleanup) {
1245
1246         try {
1247                 enableHotkeys();
1248
1249                 if (Element.visible("infoBoxShadow")) {
1250                         Element.hide("dialog_overlay");
1251                         Element.hide("infoBoxShadow");
1252
1253                         if (cleanup) $("infoBox").innerHTML = "&nbsp;";
1254                 }
1255         } catch (e) {
1256                 exception_error("closeInfoBox", e);
1257         }
1258
1259         return false;
1260 }
1261
1262
1263 function displayDlg(id, param, callback) {
1264
1265         notify_progress("Loading, please wait...", true);
1266
1267         disableHotkeys();
1268
1269         var query = "?op=dlg&id=" +
1270                 param_escape(id) + "&param=" + param_escape(param);
1271
1272         new Ajax.Request("backend.php", {
1273                 parameters: query,
1274                 onComplete: function (transport) {
1275                         infobox_callback2(transport);
1276                         if (callback) callback(transport);
1277                 } });
1278
1279         return false;
1280 }
1281
1282 function infobox_submit_callback2(transport) {
1283         closeInfoBox();
1284
1285         try {
1286                 // called from prefs, reload tab
1287                 if (typeof active_tab != 'undefined' && active_tab) {
1288                         selectTab(active_tab, false);
1289                 }
1290         } catch (e) { }
1291
1292         if (transport.responseText) {
1293                 notify_info(transport.responseText);
1294         }
1295 }
1296
1297 function infobox_callback2(transport) {
1298         try {
1299
1300                 console.log("infobox_callback2");
1301
1302                 var box = $('infoBox');
1303
1304                 if (box) {
1305
1306                         if (!getInitParam("infobox_disable_overlay")) {
1307                                 Element.show("dialog_overlay");
1308                         }
1309
1310                         box.innerHTML=transport.responseText;
1311                         Element.show("infoBoxShadow");
1312                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1313
1314
1315                 }
1316
1317                 disableHotkeys();
1318
1319                 notify("");
1320         } catch (e) {
1321                 exception_error("infobox_callback2", e);
1322         }
1323 }
1324
1325 function createFilter() {
1326
1327         try {
1328
1329                 var form = document.forms['filter_add_form'];
1330                 var reg_exp = form.reg_exp.value;
1331
1332                 if (reg_exp == "") {
1333                         alert(__("Can't add filter: nothing to match on."));
1334                         return false;
1335                 }
1336
1337                 var query = Form.serialize("filter_add_form");
1338
1339                 // we can be called from some other tab in Prefs
1340                 if (typeof active_tab != 'undefined' && active_tab) {
1341                         active_tab = "filterConfig";
1342                 }
1343
1344                 new Ajax.Request("backend.php?" + query, {
1345                         onComplete: function (transport) {
1346                                 infobox_submit_callback2(transport);
1347                         } });
1348
1349                 return true;
1350
1351         } catch (e) {
1352                 exception_error("createFilter", e);
1353         }
1354 }
1355
1356 function isValidURL(s) {
1357         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1358 }
1359
1360 function subscribeToFeed() {
1361
1362         try {
1363
1364         var form = document.forms['feed_add_form'];
1365         var feed_url = form.feed_url.value;
1366
1367         if (feed_url == "") {
1368                 alert(__("Can't subscribe: no feed URL given."));
1369                 return false;
1370         }
1371
1372         notify_progress(__("Subscribing to feed..."), true);
1373
1374         var query = Form.serialize("feed_add_form");
1375
1376         console.log("subscribe q: " + query);
1377
1378         Form.disable("feed_add_form");
1379
1380         new Ajax.Request("backend.php", {
1381                 parameters: query,
1382                 onComplete: function(transport) {
1383                         //dlg_frefresh_callback(transport);
1384
1385                         notify('');
1386
1387                         var result = transport.responseXML.getElementsByTagName('result')[0];
1388                         var rc = parseInt(result.getAttribute('code'));
1389
1390                         Form.enable("feed_add_form");
1391
1392                         switch (rc) {
1393                         case 1:
1394                                 closeInfoBox();
1395                                 notify_info(__("Subscribed to %s").replace("%s", feed_url));
1396
1397                                 if (inPreferences()) {
1398                                         updateFeedList();
1399                                 } else {
1400                                         setTimeout('updateFeedList(false, false)', 50);
1401                                 }
1402                                 break;
1403                         case 2:
1404                                 alert(__("Can't subscribe to the specified URL."));
1405                                 break;
1406                         case 0:
1407                                 alert(__("You are already subscribed to this feed."));
1408                                 break;
1409                         }
1410
1411                 } });
1412
1413         } catch (e) {
1414                 exception_error("subscribeToFeed", e);
1415         }
1416
1417         return false;
1418 }
1419
1420 function filterCR(e, f)
1421 {
1422      var key;
1423
1424      if(window.event)
1425           key = window.event.keyCode;     //IE
1426      else
1427           key = e.which;     //firefox
1428
1429         if (key == 13) {
1430                 if (typeof f != 'undefined') {
1431                         f();
1432                         return false;
1433                 } else {
1434                         return false;
1435                 }
1436         } else {
1437                 return true;
1438         }
1439 }
1440
1441 var debug_last_class = "even";
1442
1443 function debug(msg) {
1444
1445         if (debug_last_class == "even") {
1446                 debug_last_class = "odd";
1447         } else {
1448                 debug_last_class = "even";
1449         }
1450
1451         var c = $('debug_output');
1452         if (c && Element.visible(c)) {
1453                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1454                         c.removeChild(c.lastChild);
1455                 }
1456
1457                 var ts = make_timestamp();
1458                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1459                         msg + "</li>" + c.innerHTML;
1460         }
1461 }
1462
1463 function getInitParam(key) {
1464         return init_params[key];
1465 }
1466
1467 function setInitParam(key, value) {
1468         init_params[key] = value;
1469 }
1470
1471 function fatalError(code, msg, ext_info) {
1472         try {
1473
1474                 if (!ext_info) ext_info = "N/A";
1475
1476                 if (code == 6) {
1477                         window.location.href = "tt-rss.php";
1478                 } else if (code == 5) {
1479                         window.location.href = "update.php";
1480                 } else {
1481
1482                         if (msg == "") msg = "Unknown error";
1483
1484                         var ebc = $("xebContent");
1485
1486                         if (ebc) {
1487
1488                                 Element.show("dialog_overlay");
1489                                 Element.show("errorBoxShadow");
1490                                 Element.hide("xebBtn");
1491
1492                                 if (ext_info) {
1493                                         if (ext_info.responseText) {
1494                                                 ext_info = ext_info.responseText;
1495                                         }
1496                                 }
1497
1498                                 ebc.innerHTML =
1499                                         "<div><b>Error message:</b></div>" +
1500                                         "<pre>" + msg + "</pre>" +
1501                                         "<div><b>Additional information:</b></div>" +
1502                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1503                         }
1504                 }
1505
1506         } catch (e) {
1507                 exception_error("fatalError", e);
1508         }
1509 }
1510
1511 function getFeedName(id, is_cat) {
1512         var e;
1513
1514         if (is_cat) {
1515                 e = $("FCATN-" + id);
1516         } else {
1517                 e = $("FEEDN-" + id);
1518         }
1519         if (e) {
1520                 return e.innerHTML.stripTags();
1521         } else {
1522                 return null;
1523         }
1524 }
1525
1526 function filterDlgCheckType(sender) {
1527
1528         try {
1529
1530                 var ftype = sender[sender.selectedIndex].value;
1531
1532                 var form = document.forms["filter_add_form"];
1533
1534                 if (!form) {
1535                         form = document.forms["filter_edit_form"];
1536                 }
1537
1538                 if (!form) {
1539                         console.log("filterDlgCheckType: can't find form!");
1540                         return;
1541                 }
1542
1543                 // if selected filter type is 5 (Date) enable the modifier dropbox
1544                 if (ftype == 5) {
1545                         Element.show("filter_dlg_date_mod_box");
1546                         Element.show("filter_dlg_date_chk_box");
1547                 } else {
1548                         Element.hide("filter_dlg_date_mod_box");
1549                         Element.hide("filter_dlg_date_chk_box");
1550
1551                 }
1552
1553         } catch (e) {
1554                 exception_error("filterDlgCheckType", e);
1555         }
1556
1557 }
1558
1559 function filterDlgCheckAction(sender) {
1560
1561         try {
1562
1563                 var action = sender[sender.selectedIndex].value;
1564
1565                 var form = document.forms["filter_add_form"];
1566
1567                 if (!form) {
1568                         form = document.forms["filter_edit_form"];
1569                 }
1570
1571                 if (!form) {
1572                         console.log("filterDlgCheckAction: can't find form!");
1573                         return;
1574                 }
1575
1576                 var action_param = $("filter_dlg_param_box");
1577
1578                 if (!action_param) {
1579                         console.log("filterDlgCheckAction: can't find action param box!");
1580                         return;
1581                 }
1582
1583                 // if selected action supports parameters, enable params field
1584                 if (action == 4 || action == 6 || action == 7) {
1585                         Element.show(action_param);
1586                         if (action != 7) {
1587                                 Element.show(form.action_param);
1588                                 Element.hide(form.action_param_label);
1589                         } else {
1590                                 Element.show(form.action_param_label);
1591                                 Element.hide(form.action_param);
1592                         }
1593                 } else {
1594                         Element.hide(action_param);
1595                 }
1596
1597         } catch (e) {
1598                 exception_error("filterDlgCheckAction", e);
1599         }
1600
1601 }
1602
1603 function filterDlgCheckDate() {
1604         try {
1605                 var form = document.forms["filter_add_form"];
1606
1607                 if (!form) {
1608                         form = document.forms["filter_edit_form"];
1609                 }
1610
1611                 if (!form) {
1612                         console.log("filterDlgCheckAction: can't find form!");
1613                         return;
1614                 }
1615
1616                 var reg_exp = form.reg_exp.value;
1617
1618                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
1619
1620                 new Ajax.Request("backend.php", {
1621                         parameters: query,
1622                         onComplete: function(transport) {
1623
1624                                 var form = document.forms["filter_add_form"];
1625
1626                                 if (!form) {
1627                                         form = document.forms["filter_edit_form"];
1628                                 }
1629
1630                                 if (transport.responseXML) {
1631                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1632
1633                                         if (result && result.firstChild) {
1634                                                 if (result.firstChild.nodeValue == "1") {
1635
1636                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1637
1638                                                         return;
1639                                                 }
1640                                         }
1641                                 }
1642
1643                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1644
1645                         } });
1646
1647
1648         } catch (e) {
1649                 exception_error("filterDlgCheckDate", e);
1650         }
1651 }
1652
1653 function explainError(code) {
1654         return displayDlg("explainError", code);
1655 }
1656
1657 // this only searches loaded headlines list, not in CDM
1658 function getRelativePostIds(id, limit) {
1659
1660         if (!limit) limit = 3;
1661
1662         console.log("getRelativePostIds: " + id + " limit=" + limit);
1663
1664         var ids = new Array();
1665         var container = $("headlinesList");
1666
1667         if (container) {
1668                 var rows = container.rows;
1669
1670                 for (var i = 0; i < rows.length; i++) {
1671                         var r_id = rows[i].id.replace("RROW-", "");
1672
1673                         if (r_id == id) {
1674                                 for (var k = 1; k <= limit; k++) {
1675                                         var nid = false;
1676
1677                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1678                                         if (nid) ids.push(nid);
1679
1680                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1681                                         if (nid) ids.push(nid);
1682                                 }
1683
1684                                 return ids;
1685                         }
1686                 }
1687         }
1688
1689         return false;
1690 }
1691
1692 function openArticleInNewWindow(id) {
1693         try {
1694                 console.log("openArticleInNewWindow: " + id);
1695
1696                 var query = "?op=rpc&subop=getArticleLink&id=" + id;
1697                 var wname = "ttrss_article_" + id;
1698
1699                 console.log(query + " " + wname);
1700
1701                 var w = window.open("", wname);
1702
1703                 if (!w) notify_error("Failed to open window for the article");
1704
1705                 new Ajax.Request("backend.php", {
1706                         parameters: query,
1707                         onComplete: function(transport) {
1708
1709                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1710                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1711
1712                                         console.log("open_article received link: " + link);
1713
1714                                         if (link && id) {
1715
1716                                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
1717
1718                                                 console.log("link url: " + link.firstChild.nodeValue + ", wname " + wname);
1719
1720                                                 var w = window.open(link.firstChild.nodeValue, wname);
1721
1722                                                 if (!w) { notify_error("Failed to load article in new window"); }
1723
1724                                                 if (id) {
1725                                                         id = id.firstChild.nodeValue;
1726                                                         if (!$("headlinesList")) {
1727                                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
1728                                                         }
1729                                                 }
1730                                         } else {
1731                                                 notify_error("Can't open article: received invalid article link");
1732                                         }
1733                                 } });
1734
1735         } catch (e) {
1736                 exception_error("openArticleInNewWindow", e);
1737         }
1738 }
1739
1740 /* http://textsnippets.com/posts/show/835 */
1741
1742 Position.GetWindowSize = function(w) {
1743         w = w ? w : window;
1744         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1745         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1746         return [width, height]
1747 }
1748
1749 /* http://textsnippets.com/posts/show/836 */
1750
1751 Position.Center = function(element, parent) {
1752         var w, h, pw, ph;
1753         var d = Element.getDimensions(element);
1754         w = d.width;
1755         h = d.height;
1756         Position.prepare();
1757         if (!parent) {
1758                 var ws = Position.GetWindowSize();
1759                 pw = ws[0];
1760                 ph = ws[1];
1761         } else {
1762                 pw = parent.offsetWidth;
1763                 ph = parent.offsetHeight;
1764         }
1765         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1766         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1767 }
1768
1769
1770 function isCdmMode() {
1771         return !$("headlinesList");
1772 }
1773
1774 function getSelectedArticleIds2() {
1775         var rows = new Array();
1776         var cdm_mode = isCdmMode();
1777
1778         if (cdm_mode) {
1779                 rows = cdmGetSelectedArticles();
1780         } else {
1781                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1782         }
1783
1784         var ids = new Array();
1785
1786         for (var i = 0; i < rows.length; i++) {
1787                 var chk = $("RCHK-" + rows[i]);
1788                 if (chk && chk.checked) {
1789                         ids.push(rows[i]);
1790                 }
1791         }
1792
1793         return ids;
1794 }
1795
1796 function displayHelpInfobox(topic_id) {
1797
1798         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1799
1800         var w = window.open(url, "ttrss_help",
1801                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1802
1803 }
1804
1805 function focus_element(id) {
1806         try {
1807                 var e = $(id);
1808                 if (e) e.focus();
1809         } catch (e) {
1810                 exception_error("focus_element", e);
1811         }
1812         return false;
1813 }
1814
1815 function loading_set_progress(p) {
1816         try {
1817                 if (p < last_progress_point || !Element.visible("overlay")) return;
1818
1819                 console.log("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1820
1821                 var o = $("l_progress_i");
1822
1823 //              o.style.width = (p * 2) + "px";
1824
1825                 new Effect.Scale(o, p, {
1826                         scaleY : false,
1827                         scaleFrom : last_progress_point,
1828                         scaleMode: { originalWidth : 200 },
1829                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1830
1831                 last_progress_point = p;
1832
1833         } catch (e) {
1834                 exception_error("loading_set_progress", e);
1835         }
1836 }
1837
1838 function remove_splash() {
1839         if (Element.visible("overlay")) {
1840                 console.log("about to remove splash, OMG!");
1841                 Element.hide("overlay");
1842                 console.log("removed splash!");
1843         }
1844 }
1845
1846 function getSelectedFeedsFromBrowser() {
1847
1848         var list = $("browseFeedList");
1849
1850         var selected = new Array();
1851
1852         for (i = 0; i < list.childNodes.length; i++) {
1853                 var child = list.childNodes[i];
1854                 if (child.id && child.id.match("FBROW-")) {
1855                         var id = child.id.replace("FBROW-", "");
1856
1857                         var cb = $("FBCHK-" + id);
1858
1859                         if (cb.checked) {
1860                                 selected.push(id);
1861                         }
1862                 }
1863         }
1864
1865         return selected;
1866 }
1867
1868 function updateFeedBrowser() {
1869         try {
1870
1871                 var query = Form.serialize("feed_browser");
1872
1873                 Element.show('feed_browser_spinner');
1874
1875                 new Ajax.Request("backend.php", {
1876                         parameters: query,
1877                         onComplete: function(transport) {
1878                                 notify('');
1879
1880                                 Element.hide('feed_browser_spinner');
1881
1882                                 var c = $("browseFeedList");
1883                                 var r = transport.responseXML.getElementsByTagName("content")[0];
1884                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
1885                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
1886
1887                                 if (c && r) {
1888                                         c.innerHTML = r.firstChild.nodeValue;
1889                                 }
1890
1891                                 if (parseInt(mode.getAttribute("value")) == 2) {
1892                                         Element.show('feed_archive_remove');
1893                                 } else {
1894                                         Element.hide('feed_archive_remove');
1895                                 }
1896
1897                         } });
1898
1899         } catch (e) {
1900                 exception_error("updateFeedBrowser", e);
1901         }
1902
1903 }
1904
1905 function transport_error_check(transport) {
1906         try {
1907                 if (transport.responseXML) {
1908                         var error = transport.responseXML.getElementsByTagName("error")[0];
1909
1910                         if (error) {
1911                                 var code = error.getAttribute("error-code");
1912                                 var msg = error.getAttribute("error-msg");
1913                                 if (code != 0) {
1914                                         fatalError(code, msg);
1915                                         return false;
1916                                 }
1917                         }
1918                 }
1919         } catch (e) {
1920                 exception_error("check_for_error_xml", e);
1921         }
1922         return true;
1923 }
1924
1925 function strip_tags(s) {
1926         return s.replace(/<\/?[^>]+(>|$)/g, "");
1927 }
1928
1929 function truncate_string(s, length) {
1930         if (!length) length = 30;
1931         var tmp = s.substring(0, length);
1932         if (s.length > length) tmp += "&hellip;";
1933         return tmp;
1934 }
1935
1936 function hotkey_prefix_timeout() {
1937         try {
1938
1939                 var date = new Date();
1940                 var ts = Math.round(date.getTime() / 1000);
1941
1942                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
1943                         console.log("hotkey_prefix seems to be stuck, aborting");
1944                         hotkey_prefix_pressed = false;
1945                         hotkey_prefix = false;
1946                         Element.hide('cmdline');
1947                 }
1948
1949                 setTimeout("hotkey_prefix_timeout()", 1000);
1950
1951         } catch  (e) {
1952                 exception_error("hotkey_prefix_timeout", e);
1953         }
1954 }
1955
1956 function hideAuxDlg() {
1957         try {
1958                 Element.hide('auxDlg');
1959         } catch (e) {
1960                 exception_error("hideAuxDlg", e);
1961         }
1962 }
1963
1964 function displayNewContentPrompt(id) {
1965         try {
1966
1967                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
1968                         __("New articles available in this feed (click to show)") + "</a>";
1969
1970                 msg = msg.replace("%s", getFeedName(id));
1971
1972                 $('auxDlg').innerHTML = msg;
1973
1974                 Element.show('auxDlg');
1975
1976         } catch (e) {
1977                 exception_error("displayNewContentPrompt", e);
1978         }
1979 }
1980
1981 function feedBrowserSubscribe() {
1982         try {
1983
1984                 var selected = getSelectedFeedsFromBrowser();
1985
1986                 var mode = document.forms['feed_browser'].mode;
1987
1988                 mode = mode[mode.selectedIndex].value;
1989
1990                 if (selected.length > 0) {
1991                         closeInfoBox();
1992
1993                         notify_progress("Loading, please wait...", true);
1994
1995                         var query = "?op=rpc&subop=massSubscribe&ids="+
1996                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1997
1998                         new Ajax.Request("backend.php", {
1999                                 parameters: query,
2000                                 onComplete: function(transport) {
2001
2002                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
2003                                         var nf_value = nf.getAttribute("value");
2004
2005                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
2006
2007                                         if (inPreferences()) {
2008                                                 updateFeedList();
2009                                         } else {
2010                                                 setTimeout('updateFeedList(false, false)', 50);
2011                                         }
2012                                 } });
2013
2014                 } else {
2015                         alert(__("No feeds are selected."));
2016                 }
2017
2018         } catch (e) {
2019                 exception_error("feedBrowserSubscribe", e);
2020         }
2021 }
2022
2023 function feedArchiveRemove() {
2024         try {
2025
2026                 var selected = getSelectedFeedsFromBrowser();
2027
2028                 if (selected.length > 0) {
2029
2030                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
2031
2032                         if (confirm(pr)) {
2033                                 Element.show('feed_browser_spinner');
2034
2035                                 var query = "?op=rpc&subop=remarchived&ids=" +
2036                                         param_escape(selected.toString());;
2037
2038                                 new Ajax.Request("backend.php", {
2039                                         parameters: query,
2040                                         onComplete: function(transport) {
2041                                                 updateFeedBrowser();
2042                                         } });
2043                         }
2044
2045                 } else {
2046                         alert(__("No feeds are selected."));
2047                 }
2048
2049         } catch (e) {
2050                 exception_error("feedArchiveRemove", e);
2051         }
2052 }
2053
2054 function uploadIconHandler(rc) {
2055         try {
2056                 switch (rc) {
2057                         case 0:
2058                                 notify_info("Upload complete.");
2059                                 if (inPreferences()) {
2060                                         updateFeedList();
2061                                 } else {
2062                                         setTimeout('updateFeedList(false, false)', 50);
2063                                 }
2064                                 break;
2065                         case 1:
2066                                 notify_error("Upload failed: icon is too big.");
2067                                 break;
2068                         case 2:
2069                                 notify_error("Upload failed.");
2070                                 break;
2071                 }
2072
2073         } catch (e) {
2074                 exception_error("uploadIconHandler", e);
2075         }
2076 }
2077
2078 function removeFeedIcon(id) {
2079
2080         try {
2081
2082                 if (confirm(__("Remove stored feed icon?"))) {
2083                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
2084
2085                         console.log(query);
2086
2087                         notify_progress("Removing feed icon...", true);
2088
2089                         new Ajax.Request("backend.php", {
2090                                 parameters: query,
2091                                 onComplete: function(transport) {
2092                                         notify_info("Feed icon removed.");
2093                                         if (inPreferences()) {
2094                                                 updateFeedList();
2095                                         } else {
2096                                                 setTimeout('updateFeedList(false, false)', 50);
2097                                         }
2098                                 } });
2099                 }
2100
2101                 return false;
2102         } catch (e) {
2103                 exception_error("uploadFeedIcon", e);
2104         }
2105 }
2106
2107 function uploadFeedIcon() {
2108
2109         try {
2110
2111                 var file = $("icon_file");
2112
2113                 if (file.value.length == 0) {
2114                         alert(__("Please select an image file to upload."));
2115                 } else {
2116                         if (confirm(__("Upload new icon for this feed?"))) {
2117                                 notify_progress("Uploading, please wait...", true);
2118                                 return true;
2119                         }
2120                 }
2121
2122                 return false;
2123
2124         } catch (e) {
2125                 exception_error("uploadFeedIcon", e);
2126         }
2127 }
2128
2129 function addLabel() {
2130
2131         try {
2132
2133                 var caption = prompt(__("Please enter label caption:"), "");
2134
2135                 if (caption != undefined) {
2136
2137                         if (caption == "") {
2138                                 alert(__("Can't create label: missing caption."));
2139                                 return false;
2140                         }
2141
2142                         var query = "?op=pref-labels&subop=add&caption=" +
2143                                 param_escape(caption);
2144
2145                         notify_progress("Loading, please wait...", true);
2146
2147                         if (inPreferences()) active_tab = "labelConfig";
2148
2149                         new Ajax.Request("backend.php", {
2150                                 parameters: query,
2151                                 onComplete: function(transport) {
2152                                         if (inPreferences()) {
2153                                                 infobox_submit_callback2(transport);
2154                                         } else {
2155                                                 updateFeedList();
2156                                         }
2157                         } });
2158
2159                 }
2160
2161         } catch (e) {
2162                 exception_error("addLabel", e);
2163         }
2164 }
2165
2166 function quickAddFeed() {
2167         displayDlg('quickAddFeed', '',
2168            function () {$('feed_url').focus();});
2169 }
2170
2171 function quickAddFilter() {
2172         displayDlg('quickAddFilter', '',
2173            function () {document.forms['filter_add_form'].reg_exp.focus();});
2174 }
2175
2176 function unsubscribeFeed(feed_id, title) {
2177
2178         var msg = __("Unsubscribe from %s?").replace("%s", title);
2179
2180         if (title == undefined || confirm(msg)) {
2181                 notify_progress("Removing feed...");
2182
2183                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
2184
2185                 new Ajax.Request("backend.php", {
2186                         parameters: query,
2187                         onComplete: function(transport) {
2188
2189                                         closeInfoBox();
2190
2191                                         if (inPreferences()) {
2192                                                 updateFeedList();
2193                                         } else {
2194                                                 dlg_frefresh_callback(transport, feed_id);
2195                                         }
2196
2197                                 } });
2198         }
2199
2200         return false;
2201 }
2202
2203
2204 function backend_sanity_check_callback(transport) {
2205
2206         try {
2207
2208                 if (sanity_check_done) {
2209                         fatalError(11, "Sanity check request received twice. This can indicate "+
2210                       "presence of Firebug or some other disrupting extension. "+
2211                                 "Please disable it and try again.");
2212                         return;
2213                 }
2214
2215                 if (!transport.responseXML) {
2216                         if (!store) {
2217                                 fatalError(3, "Sanity check: Received reply is not XML",
2218                                         transport.responseText);
2219                                 return;
2220                         } else {
2221                                 init_offline();
2222                                 return;
2223                         }
2224                 }
2225
2226                 if (getURLParam("offline")) {
2227                         return init_offline();
2228                 }
2229
2230                 var reply = transport.responseXML.firstChild.firstChild;
2231
2232                 if (!reply) {
2233                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
2234                         return;
2235                 }
2236
2237                 var error_code = reply.getAttribute("error-code");
2238
2239                 if (error_code && error_code != 0) {
2240                         return fatalError(error_code, reply.getAttribute("error-msg"));
2241                 }
2242
2243                 console.log("sanity check ok");
2244
2245                 var params = reply.nextSibling;
2246
2247                 if (params) {
2248                         console.log('reading init-params...');
2249                         var param = params.firstChild;
2250
2251                         while (param) {
2252                                 var k = param.getAttribute("key");
2253                                 var v = param.getAttribute("value");
2254                                 console.log(k + " => " + v);
2255                                 init_params[k] = v;
2256
2257                                 if (db) {
2258                                         db.execute("DELETE FROM init_params WHERE key = ?", [k]);
2259                                         db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
2260                                                 [k, v]);
2261                                 }
2262
2263                                 param = param.nextSibling;
2264                         }
2265                 }
2266
2267                 sanity_check_done = true;
2268
2269                 init_second_stage();
2270
2271         } catch (e) {
2272                 exception_error("backend_sanity_check_callback", e, transport);
2273         }
2274 }
2275
2276