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 checkboxToggleElement(elem, id) {
1097         if (elem.checked) {
1098                 Effect.Appear(id, {duration : 0.5});
1099         } else {
1100                 Effect.Fade(id, {duration : 0.5});
1101         }
1102 }
1103
1104 function dropboxSelect(e, v) {
1105         for (i = 0; i < e.length; i++) {
1106                 if (e[i].value == v) {
1107                         e.selectedIndex = i;
1108                         break;
1109                 }
1110         }
1111 }
1112
1113 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1114 // bugfixed just a little bit :-)
1115 function getURLParam(strParamName){
1116   var strReturn = "";
1117   var strHref = window.location.href;
1118
1119   if (strHref.indexOf("#") == strHref.length-1) {
1120                 strHref = strHref.substring(0, strHref.length-1);
1121   }
1122
1123   if ( strHref.indexOf("?") > -1 ){
1124     var strQueryString = strHref.substr(strHref.indexOf("?"));
1125     var aQueryString = strQueryString.split("&");
1126     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1127       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1128         var aParam = aQueryString[iParam].split("=");
1129         strReturn = aParam[1];
1130         break;
1131       }
1132     }
1133   }
1134   return strReturn;
1135 }
1136
1137 function leading_zero(p) {
1138         var s = String(p);
1139         if (s.length == 1) s = "0" + s;
1140         return s;
1141 }
1142
1143 function make_timestamp() {
1144         var d = new Date();
1145
1146         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1147                         ":" + leading_zero(d.getSeconds());
1148 }
1149
1150
1151 function closeErrorBox() {
1152
1153         if (Element.visible("errorBoxShadow")) {
1154                 Element.hide("dialog_overlay");
1155                 Element.hide("errorBoxShadow");
1156
1157                 enableHotkeys();
1158         }
1159
1160         return false;
1161 }
1162
1163 function closeInfoBox(cleanup) {
1164
1165         try {
1166                 enableHotkeys();
1167
1168                 if (Element.visible("infoBoxShadow")) {
1169                         Element.hide("dialog_overlay");
1170                         Element.hide("infoBoxShadow");
1171
1172                         if (cleanup) $("infoBox").innerHTML = "&nbsp;";
1173                 }
1174         } catch (e) {
1175                 exception_error("closeInfoBox", e);
1176         }
1177
1178         return false;
1179 }
1180
1181
1182 function displayDlg(id, param, callback) {
1183
1184         notify_progress("Loading, please wait...", true);
1185
1186         disableHotkeys();
1187
1188         var query = "?op=dlg&id=" +
1189                 param_escape(id) + "&param=" + param_escape(param);
1190
1191         new Ajax.Request("backend.php", {
1192                 parameters: query,
1193                 onComplete: function (transport) {
1194                         infobox_callback2(transport);
1195                         if (callback) callback(transport);
1196                 } });
1197
1198         return false;
1199 }
1200
1201 function infobox_submit_callback2(transport) {
1202         closeInfoBox();
1203
1204         try {
1205                 // called from prefs, reload tab
1206                 if (typeof active_tab != 'undefined' && active_tab) {
1207                         selectTab(active_tab, false);
1208                 }
1209         } catch (e) { }
1210
1211         if (transport.responseText) {
1212                 notify_info(transport.responseText);
1213         }
1214 }
1215
1216 function infobox_callback2(transport) {
1217         try {
1218
1219                 console.log("infobox_callback2");
1220
1221                 var box = $('infoBox');
1222
1223                 if (box) {
1224
1225                         if (!getInitParam("infobox_disable_overlay")) {
1226                                 Element.show("dialog_overlay");
1227                         }
1228
1229                         box.innerHTML=transport.responseText;
1230                         Element.show("infoBoxShadow");
1231                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1232
1233
1234                 }
1235
1236                 disableHotkeys();
1237
1238                 notify("");
1239         } catch (e) {
1240                 exception_error("infobox_callback2", e);
1241         }
1242 }
1243
1244 function createFilter() {
1245
1246         try {
1247
1248                 var form = document.forms['filter_add_form'];
1249                 var reg_exp = form.reg_exp.value;
1250
1251                 if (reg_exp == "") {
1252                         alert(__("Can't add filter: nothing to match on."));
1253                         return false;
1254                 }
1255
1256                 var query = Form.serialize("filter_add_form");
1257
1258                 // we can be called from some other tab in Prefs
1259                 if (typeof active_tab != 'undefined' && active_tab) {
1260                         active_tab = "filterConfig";
1261                 }
1262
1263                 new Ajax.Request("backend.php?" + query, {
1264                         onComplete: function (transport) {
1265                                 infobox_submit_callback2(transport);
1266                         } });
1267
1268                 return true;
1269
1270         } catch (e) {
1271                 exception_error("createFilter", e);
1272         }
1273 }
1274
1275 function isValidURL(s) {
1276         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1277 }
1278
1279 function subscribeToFeed() {
1280
1281         try {
1282
1283         var form = document.forms['feed_add_form'];
1284         var feed_url = form.feed_url.value;
1285
1286         if (feed_url == "") {
1287                 alert(__("Can't subscribe: no feed URL given."));
1288                 return false;
1289         }
1290
1291         notify_progress(__("Subscribing to feed..."), true);
1292
1293         var query = Form.serialize("feed_add_form");
1294
1295         console.log("subscribe q: " + query);
1296
1297         Form.disable("feed_add_form");
1298
1299         new Ajax.Request("backend.php", {
1300                 parameters: query,
1301                 onComplete: function(transport) {
1302                         //dlg_frefresh_callback(transport);
1303
1304                         notify('');
1305
1306                         var result = transport.responseXML.getElementsByTagName('result')[0];
1307                         var rc = parseInt(result.getAttribute('code'));
1308
1309                         Form.enable("feed_add_form");
1310
1311                         switch (rc) {
1312                         case 1:
1313                                 closeInfoBox();
1314                                 notify_info(__("Subscribed to %s").replace("%s", feed_url));
1315
1316                                 if (inPreferences()) {
1317                                         updateFeedList();
1318                                 } else {
1319                                         setTimeout('updateFeedList(false, false)', 50);
1320                                 }
1321                                 break;
1322                         case 2:
1323                                 alert(__("Can't subscribe to the specified URL."));
1324                                 break;
1325                         case 0:
1326                                 alert(__("You are already subscribed to this feed."));
1327                                 break;
1328                         }
1329
1330                 } });
1331
1332         } catch (e) {
1333                 exception_error("subscribeToFeed", e);
1334         }
1335
1336         return false;
1337 }
1338
1339 function filterCR(e, f)
1340 {
1341      var key;
1342
1343      if(window.event)
1344           key = window.event.keyCode;     //IE
1345      else
1346           key = e.which;     //firefox
1347
1348         if (key == 13) {
1349                 if (typeof f != 'undefined') {
1350                         f();
1351                         return false;
1352                 } else {
1353                         return false;
1354                 }
1355         } else {
1356                 return true;
1357         }
1358 }
1359
1360 var debug_last_class = "even";
1361
1362 function debug(msg) {
1363
1364         if (debug_last_class == "even") {
1365                 debug_last_class = "odd";
1366         } else {
1367                 debug_last_class = "even";
1368         }
1369
1370         var c = $('debug_output');
1371         if (c && Element.visible(c)) {
1372                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1373                         c.removeChild(c.lastChild);
1374                 }
1375
1376                 var ts = make_timestamp();
1377                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1378                         msg + "</li>" + c.innerHTML;
1379         }
1380 }
1381
1382 function getInitParam(key) {
1383         return init_params[key];
1384 }
1385
1386 function setInitParam(key, value) {
1387         init_params[key] = value;
1388 }
1389
1390 function fatalError(code, msg, ext_info) {
1391         try {
1392
1393                 if (!ext_info) ext_info = "N/A";
1394
1395                 if (code == 6) {
1396                         window.location.href = "tt-rss.php";
1397                 } else if (code == 5) {
1398                         window.location.href = "update.php";
1399                 } else {
1400
1401                         if (msg == "") msg = "Unknown error";
1402
1403                         var ebc = $("xebContent");
1404
1405                         if (ebc) {
1406
1407                                 Element.show("dialog_overlay");
1408                                 Element.show("errorBoxShadow");
1409                                 Element.hide("xebBtn");
1410
1411                                 if (ext_info) {
1412                                         if (ext_info.responseText) {
1413                                                 ext_info = ext_info.responseText;
1414                                         }
1415                                 }
1416
1417                                 ebc.innerHTML =
1418                                         "<div><b>Error message:</b></div>" +
1419                                         "<pre>" + msg + "</pre>" +
1420                                         "<div><b>Additional information:</b></div>" +
1421                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1422                         }
1423                 }
1424
1425         } catch (e) {
1426                 exception_error("fatalError", e);
1427         }
1428 }
1429
1430 function getFeedName(id, is_cat) {
1431         var e;
1432
1433         if (is_cat) {
1434                 e = $("FCATN-" + id);
1435         } else {
1436                 e = $("FEEDN-" + id);
1437         }
1438         if (e) {
1439                 return e.innerHTML.stripTags();
1440         } else {
1441                 return null;
1442         }
1443 }
1444
1445 function filterDlgCheckType(sender) {
1446
1447         try {
1448
1449                 var ftype = sender[sender.selectedIndex].value;
1450
1451                 var form = document.forms["filter_add_form"];
1452
1453                 if (!form) {
1454                         form = document.forms["filter_edit_form"];
1455                 }
1456
1457                 if (!form) {
1458                         console.log("filterDlgCheckType: can't find form!");
1459                         return;
1460                 }
1461
1462                 // if selected filter type is 5 (Date) enable the modifier dropbox
1463                 if (ftype == 5) {
1464                         Element.show("filter_dlg_date_mod_box");
1465                         Element.show("filter_dlg_date_chk_box");
1466                 } else {
1467                         Element.hide("filter_dlg_date_mod_box");
1468                         Element.hide("filter_dlg_date_chk_box");
1469
1470                 }
1471
1472         } catch (e) {
1473                 exception_error("filterDlgCheckType", e);
1474         }
1475
1476 }
1477
1478 function filterDlgCheckAction(sender) {
1479
1480         try {
1481
1482                 var action = sender[sender.selectedIndex].value;
1483
1484                 var form = document.forms["filter_add_form"];
1485
1486                 if (!form) {
1487                         form = document.forms["filter_edit_form"];
1488                 }
1489
1490                 if (!form) {
1491                         console.log("filterDlgCheckAction: can't find form!");
1492                         return;
1493                 }
1494
1495                 var action_param = $("filter_dlg_param_box");
1496
1497                 if (!action_param) {
1498                         console.log("filterDlgCheckAction: can't find action param box!");
1499                         return;
1500                 }
1501
1502                 // if selected action supports parameters, enable params field
1503                 if (action == 4 || action == 6 || action == 7) {
1504                         Element.show(action_param);
1505                         if (action != 7) {
1506                                 Element.show(form.action_param);
1507                                 Element.hide(form.action_param_label);
1508                         } else {
1509                                 Element.show(form.action_param_label);
1510                                 Element.hide(form.action_param);
1511                         }
1512                 } else {
1513                         Element.hide(action_param);
1514                 }
1515
1516         } catch (e) {
1517                 exception_error("filterDlgCheckAction", e);
1518         }
1519
1520 }
1521
1522 function filterDlgCheckDate() {
1523         try {
1524                 var form = document.forms["filter_add_form"];
1525
1526                 if (!form) {
1527                         form = document.forms["filter_edit_form"];
1528                 }
1529
1530                 if (!form) {
1531                         console.log("filterDlgCheckAction: can't find form!");
1532                         return;
1533                 }
1534
1535                 var reg_exp = form.reg_exp.value;
1536
1537                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
1538
1539                 new Ajax.Request("backend.php", {
1540                         parameters: query,
1541                         onComplete: function(transport) {
1542
1543                                 var form = document.forms["filter_add_form"];
1544
1545                                 if (!form) {
1546                                         form = document.forms["filter_edit_form"];
1547                                 }
1548
1549                                 if (transport.responseXML) {
1550                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1551
1552                                         if (result && result.firstChild) {
1553                                                 if (result.firstChild.nodeValue == "1") {
1554
1555                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1556
1557                                                         return;
1558                                                 }
1559                                         }
1560                                 }
1561
1562                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1563
1564                         } });
1565
1566
1567         } catch (e) {
1568                 exception_error("filterDlgCheckDate", e);
1569         }
1570 }
1571
1572 function explainError(code) {
1573         return displayDlg("explainError", code);
1574 }
1575
1576 // this only searches loaded headlines list, not in CDM
1577 function getRelativePostIds(id, limit) {
1578
1579         if (!limit) limit = 3;
1580
1581         console.log("getRelativePostIds: " + id + " limit=" + limit);
1582
1583         var ids = new Array();
1584         var container = $("headlinesList");
1585
1586         if (container) {
1587                 var rows = container.rows;
1588
1589                 for (var i = 0; i < rows.length; i++) {
1590                         var r_id = rows[i].id.replace("RROW-", "");
1591
1592                         if (r_id == id) {
1593                                 for (var k = 1; k <= limit; k++) {
1594                                         var nid = false;
1595
1596                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1597                                         if (nid) ids.push(nid);
1598
1599                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1600                                         if (nid) ids.push(nid);
1601                                 }
1602
1603                                 return ids;
1604                         }
1605                 }
1606         }
1607
1608         return false;
1609 }
1610
1611 function openArticleInNewWindow(id) {
1612         try {
1613                 console.log("openArticleInNewWindow: " + id);
1614
1615                 var query = "?op=rpc&subop=getArticleLink&id=" + id;
1616                 var wname = "ttrss_article_" + id;
1617
1618                 console.log(query + " " + wname);
1619
1620                 var w = window.open("", wname);
1621
1622                 if (!w) notify_error("Failed to open window for the article");
1623
1624                 new Ajax.Request("backend.php", {
1625                         parameters: query,
1626                         onComplete: function(transport) {
1627
1628                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1629                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1630
1631                                         console.log("open_article received link: " + link);
1632
1633                                         if (link && id) {
1634
1635                                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
1636
1637                                                 console.log("link url: " + link.firstChild.nodeValue + ", wname " + wname);
1638
1639                                                 var w = window.open(link.firstChild.nodeValue, wname);
1640
1641                                                 if (!w) { notify_error("Failed to load article in new window"); }
1642
1643                                                 if (id) {
1644                                                         id = id.firstChild.nodeValue;
1645                                                         if (!$("headlinesList")) {
1646                                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
1647                                                         }
1648                                                 }
1649                                         } else {
1650                                                 notify_error("Can't open article: received invalid article link");
1651                                         }
1652                                 } });
1653
1654         } catch (e) {
1655                 exception_error("openArticleInNewWindow", e);
1656         }
1657 }
1658
1659 /* http://textsnippets.com/posts/show/835 */
1660
1661 Position.GetWindowSize = function(w) {
1662         w = w ? w : window;
1663         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1664         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1665         return [width, height]
1666 }
1667
1668 /* http://textsnippets.com/posts/show/836 */
1669
1670 Position.Center = function(element, parent) {
1671         var w, h, pw, ph;
1672         var d = Element.getDimensions(element);
1673         w = d.width;
1674         h = d.height;
1675         Position.prepare();
1676         if (!parent) {
1677                 var ws = Position.GetWindowSize();
1678                 pw = ws[0];
1679                 ph = ws[1];
1680         } else {
1681                 pw = parent.offsetWidth;
1682                 ph = parent.offsetHeight;
1683         }
1684         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1685         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
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 focus_element(id) {
1725         try {
1726                 var e = $(id);
1727                 if (e) e.focus();
1728         } catch (e) {
1729                 exception_error("focus_element", e);
1730         }
1731         return false;
1732 }
1733
1734 function loading_set_progress(p) {
1735         try {
1736                 if (p < last_progress_point || !Element.visible("overlay")) return;
1737
1738                 console.log("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1739
1740                 var o = $("l_progress_i");
1741
1742 //              o.style.width = (p * 2) + "px";
1743
1744                 new Effect.Scale(o, p, {
1745                         scaleY : false,
1746                         scaleFrom : last_progress_point,
1747                         scaleMode: { originalWidth : 200 },
1748                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1749
1750                 last_progress_point = p;
1751
1752         } catch (e) {
1753                 exception_error("loading_set_progress", e);
1754         }
1755 }
1756
1757 function remove_splash() {
1758         if (Element.visible("overlay")) {
1759                 console.log("about to remove splash, OMG!");
1760                 Element.hide("overlay");
1761                 console.log("removed splash!");
1762         }
1763 }
1764
1765 function getSelectedFeedsFromBrowser() {
1766
1767         var list = $("browseFeedList");
1768
1769         var selected = new Array();
1770
1771         for (i = 0; i < list.childNodes.length; i++) {
1772                 var child = list.childNodes[i];
1773                 if (child.id && child.id.match("FBROW-")) {
1774                         var id = child.id.replace("FBROW-", "");
1775
1776                         var cb = $("FBCHK-" + id);
1777
1778                         if (cb.checked) {
1779                                 selected.push(id);
1780                         }
1781                 }
1782         }
1783
1784         return selected;
1785 }
1786
1787 function updateFeedBrowser() {
1788         try {
1789
1790                 var query = Form.serialize("feed_browser");
1791
1792                 Element.show('feed_browser_spinner');
1793
1794                 new Ajax.Request("backend.php", {
1795                         parameters: query,
1796                         onComplete: function(transport) {
1797                                 notify('');
1798
1799                                 Element.hide('feed_browser_spinner');
1800
1801                                 var c = $("browseFeedList");
1802                                 var r = transport.responseXML.getElementsByTagName("content")[0];
1803                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
1804                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
1805
1806                                 if (c && r) {
1807                                         c.innerHTML = r.firstChild.nodeValue;
1808                                 }
1809
1810                                 if (parseInt(mode.getAttribute("value")) == 2) {
1811                                         Element.show('feed_archive_remove');
1812                                 } else {
1813                                         Element.hide('feed_archive_remove');
1814                                 }
1815
1816                         } });
1817
1818         } catch (e) {
1819                 exception_error("updateFeedBrowser", e);
1820         }
1821
1822 }
1823
1824 function transport_error_check(transport) {
1825         try {
1826                 if (transport.responseXML) {
1827                         var error = transport.responseXML.getElementsByTagName("error")[0];
1828
1829                         if (error) {
1830                                 var code = error.getAttribute("error-code");
1831                                 var msg = error.getAttribute("error-msg");
1832                                 if (code != 0) {
1833                                         fatalError(code, msg);
1834                                         return false;
1835                                 }
1836                         }
1837                 }
1838         } catch (e) {
1839                 exception_error("check_for_error_xml", e);
1840         }
1841         return true;
1842 }
1843
1844 function strip_tags(s) {
1845         return s.replace(/<\/?[^>]+(>|$)/g, "");
1846 }
1847
1848 function truncate_string(s, length) {
1849         if (!length) length = 30;
1850         var tmp = s.substring(0, length);
1851         if (s.length > length) tmp += "&hellip;";
1852         return tmp;
1853 }
1854
1855 function hotkey_prefix_timeout() {
1856         try {
1857
1858                 var date = new Date();
1859                 var ts = Math.round(date.getTime() / 1000);
1860
1861                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
1862                         console.log("hotkey_prefix seems to be stuck, aborting");
1863                         hotkey_prefix_pressed = false;
1864                         hotkey_prefix = false;
1865                         Element.hide('cmdline');
1866                 }
1867
1868                 setTimeout("hotkey_prefix_timeout()", 1000);
1869
1870         } catch  (e) {
1871                 exception_error("hotkey_prefix_timeout", e);
1872         }
1873 }
1874
1875 function hideAuxDlg() {
1876         try {
1877                 Element.hide('auxDlg');
1878         } catch (e) {
1879                 exception_error("hideAuxDlg", e);
1880         }
1881 }
1882
1883 function displayNewContentPrompt(id) {
1884         try {
1885
1886                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
1887                         __("New articles available in this feed (click to show)") + "</a>";
1888
1889                 msg = msg.replace("%s", getFeedName(id));
1890
1891                 $('auxDlg').innerHTML = msg;
1892
1893                 Element.show('auxDlg');
1894
1895         } catch (e) {
1896                 exception_error("displayNewContentPrompt", e);
1897         }
1898 }
1899
1900 function feedBrowserSubscribe() {
1901         try {
1902
1903                 var selected = getSelectedFeedsFromBrowser();
1904
1905                 var mode = document.forms['feed_browser'].mode;
1906
1907                 mode = mode[mode.selectedIndex].value;
1908
1909                 if (selected.length > 0) {
1910                         closeInfoBox();
1911
1912                         notify_progress("Loading, please wait...", true);
1913
1914                         var query = "?op=rpc&subop=massSubscribe&ids="+
1915                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1916
1917                         new Ajax.Request("backend.php", {
1918                                 parameters: query,
1919                                 onComplete: function(transport) {
1920
1921                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1922                                         var nf_value = nf.getAttribute("value");
1923
1924                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1925
1926                                         if (inPreferences()) {
1927                                                 updateFeedList();
1928                                         } else {
1929                                                 setTimeout('updateFeedList(false, false)', 50);
1930                                         }
1931                                 } });
1932
1933                 } else {
1934                         alert(__("No feeds are selected."));
1935                 }
1936
1937         } catch (e) {
1938                 exception_error("feedBrowserSubscribe", e);
1939         }
1940 }
1941
1942 function feedArchiveRemove() {
1943         try {
1944
1945                 var selected = getSelectedFeedsFromBrowser();
1946
1947                 if (selected.length > 0) {
1948
1949                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1950
1951                         if (confirm(pr)) {
1952                                 Element.show('feed_browser_spinner');
1953
1954                                 var query = "?op=rpc&subop=remarchived&ids=" +
1955                                         param_escape(selected.toString());;
1956
1957                                 new Ajax.Request("backend.php", {
1958                                         parameters: query,
1959                                         onComplete: function(transport) {
1960                                                 updateFeedBrowser();
1961                                         } });
1962                         }
1963
1964                 } else {
1965                         alert(__("No feeds are selected."));
1966                 }
1967
1968         } catch (e) {
1969                 exception_error("feedArchiveRemove", e);
1970         }
1971 }
1972
1973 function uploadIconHandler(rc) {
1974         try {
1975                 switch (rc) {
1976                         case 0:
1977                                 notify_info("Upload complete.");
1978                                 if (inPreferences()) {
1979                                         updateFeedList();
1980                                 } else {
1981                                         setTimeout('updateFeedList(false, false)', 50);
1982                                 }
1983                                 break;
1984                         case 1:
1985                                 notify_error("Upload failed: icon is too big.");
1986                                 break;
1987                         case 2:
1988                                 notify_error("Upload failed.");
1989                                 break;
1990                 }
1991
1992         } catch (e) {
1993                 exception_error("uploadIconHandler", e);
1994         }
1995 }
1996
1997 function removeFeedIcon(id) {
1998
1999         try {
2000
2001                 if (confirm(__("Remove stored feed icon?"))) {
2002                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
2003
2004                         console.log(query);
2005
2006                         notify_progress("Removing feed icon...", true);
2007
2008                         new Ajax.Request("backend.php", {
2009                                 parameters: query,
2010                                 onComplete: function(transport) {
2011                                         notify_info("Feed icon removed.");
2012                                         if (inPreferences()) {
2013                                                 updateFeedList();
2014                                         } else {
2015                                                 setTimeout('updateFeedList(false, false)', 50);
2016                                         }
2017                                 } });
2018                 }
2019
2020                 return false;
2021         } catch (e) {
2022                 exception_error("uploadFeedIcon", e);
2023         }
2024 }
2025
2026 function uploadFeedIcon() {
2027
2028         try {
2029
2030                 var file = $("icon_file");
2031
2032                 if (file.value.length == 0) {
2033                         alert(__("Please select an image file to upload."));
2034                 } else {
2035                         if (confirm(__("Upload new icon for this feed?"))) {
2036                                 notify_progress("Uploading, please wait...", true);
2037                                 return true;
2038                         }
2039                 }
2040
2041                 return false;
2042
2043         } catch (e) {
2044                 exception_error("uploadFeedIcon", e);
2045         }
2046 }
2047
2048 function addLabel() {
2049
2050         try {
2051
2052                 var caption = prompt(__("Please enter label caption:"), "");
2053
2054                 if (caption != undefined) {
2055
2056                         if (caption == "") {
2057                                 alert(__("Can't create label: missing caption."));
2058                                 return false;
2059                         }
2060
2061                         var query = "?op=pref-labels&subop=add&caption=" +
2062                                 param_escape(caption);
2063
2064                         notify_progress("Loading, please wait...", true);
2065
2066                         if (inPreferences()) active_tab = "labelConfig";
2067
2068                         new Ajax.Request("backend.php", {
2069                                 parameters: query,
2070                                 onComplete: function(transport) {
2071                                         if (inPreferences()) {
2072                                                 infobox_submit_callback2(transport);
2073                                         } else {
2074                                                 updateFeedList();
2075                                         }
2076                         } });
2077
2078                 }
2079
2080         } catch (e) {
2081                 exception_error("addLabel", e);
2082         }
2083 }
2084
2085 function quickAddFeed() {
2086         displayDlg('quickAddFeed', '',
2087            function () {$('feed_url').focus();});
2088 }
2089
2090 function quickAddFilter() {
2091         displayDlg('quickAddFilter', '',
2092            function () {document.forms['filter_add_form'].reg_exp.focus();});
2093 }
2094
2095 function unsubscribeFeed(feed_id, title) {
2096
2097         var msg = __("Unsubscribe from %s?").replace("%s", title);
2098
2099         if (title == undefined || confirm(msg)) {
2100                 notify_progress("Removing feed...");
2101
2102                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
2103
2104                 new Ajax.Request("backend.php", {
2105                         parameters: query,
2106                         onComplete: function(transport) {
2107
2108                                         closeInfoBox();
2109
2110                                         if (inPreferences()) {
2111                                                 updateFeedList();
2112                                         } else {
2113                                                 dlg_frefresh_callback(transport, feed_id);
2114                                         }
2115
2116                                 } });
2117         }
2118
2119         return false;
2120 }
2121
2122
2123 function backend_sanity_check_callback(transport) {
2124
2125         try {
2126
2127                 if (sanity_check_done) {
2128                         fatalError(11, "Sanity check request received twice. This can indicate "+
2129                       "presence of Firebug or some other disrupting extension. "+
2130                                 "Please disable it and try again.");
2131                         return;
2132                 }
2133
2134                 if (!transport.responseXML) {
2135                         if (!store) {
2136                                 fatalError(3, "Sanity check: Received reply is not XML",
2137                                         transport.responseText);
2138                                 return;
2139                         } else {
2140                                 init_offline();
2141                                 return;
2142                         }
2143                 }
2144
2145                 if (getURLParam("offline")) {
2146                         return init_offline();
2147                 }
2148
2149                 var reply = transport.responseXML.firstChild.firstChild;
2150
2151                 if (!reply) {
2152                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
2153                         return;
2154                 }
2155
2156                 var error_code = reply.getAttribute("error-code");
2157
2158                 if (error_code && error_code != 0) {
2159                         return fatalError(error_code, reply.getAttribute("error-msg"));
2160                 }
2161
2162                 console.log("sanity check ok");
2163
2164                 var params = reply.nextSibling;
2165
2166                 if (params) {
2167                         console.log('reading init-params...');
2168                         var param = params.firstChild;
2169
2170                         while (param) {
2171                                 var k = param.getAttribute("key");
2172                                 var v = param.getAttribute("value");
2173                                 console.log(k + " => " + v);
2174                                 init_params[k] = v;
2175
2176                                 if (db) {
2177                                         db.execute("DELETE FROM init_params WHERE key = ?", [k]);
2178                                         db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
2179                                                 [k, v]);
2180                                 }
2181
2182                                 param = param.nextSibling;
2183                         }
2184                 }
2185
2186                 sanity_check_done = true;
2187
2188                 init_second_stage();
2189
2190         } catch (e) {
2191                 exception_error("backend_sanity_check_callback", e, transport);
2192         }
2193 }
2194
2195