functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 0;
   4 var sanity_check_done = false;
   5
   6 /* add method to remove element from array */
   7
   8 Array.prototype.remove = function(s) {
   9         for (var i=0; i < this.length; i++) {
  10                 if (s == this[i]) this.splice(i, 1);
  11         }
  12 }
  13
  14 /* create console.log if it doesn't exist */
  15
  16 if (!window.console) console = {};
  17 console.log = console.log || function(msg) { };
  18 console.warn = console.warn || function(msg) { };
  19 console.error = console.error || function(msg) { };
  20
  21 function exception_error(location, e, ext_info) {
  22         var msg = format_exception_error(location, e);
  23
  24         if (!ext_info) ext_info = false;
  25
  26         disableHotkeys();
  27
  28         try {
  29
  30                 var ebc = $("xebContent");
  31
  32                 if (ebc) {
  33
  34                         Element.show("dialog_overlay");
  35                         Element.show("errorBoxShadow");
  36
  37                         if (ext_info) {
  38                                 if (ext_info.responseText) {
  39                                         ext_info = ext_info.responseText;
  40                                 }
  41                         }
  42
  43                         ebc.innerHTML =
  44                                 "<div><b>Error message:</b></div>" +
  45                                 "<pre>" + msg + "</pre>";
  46
  47                         if (ext_info) {
  48                                 ebc.innerHTML += "<div><b>Additional information:</b></div>" +
  49                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  50                         }
  51
  52                         ebc.innerHTML += "<div><b>Stack trace:</b></div>" +
  53                                 "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  54
  55                 } else {
  56                         alert(msg);
  57                 }
  58
  59         } catch (e) {
  60                 alert(msg);
  61
  62         }
  63
  64 }
  65
  66 function format_exception_error(location, e) {
  67         var msg;
  68
  69         if (e.fileName) {
  70                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  71
  72                 msg = "Exception: " + e.name + ", " + e.message +
  73                         "\nFunction: " + location + "()" +
  74                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  75
  76         } else if (e.description) {
  77                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  78         } else {
  79                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  80         }
  81
  82         console.error("EXCEPTION: " + msg);
  83
  84         return msg;
  85 }
  86
  87
  88 function disableHotkeys() {
  89         hotkeys_enabled = false;
  90 }
  91
  92 function enableHotkeys() {
  93         hotkeys_enabled = true;
  94 }
  95
  96 function param_escape(arg) {
  97         if (typeof encodeURIComponent != 'undefined')
  98                 return encodeURIComponent(arg);
  99         else
 100                 return escape(arg);
 101 }
 102
 103 function param_unescape(arg) {
 104         if (typeof decodeURIComponent != 'undefined')
 105                 return decodeURIComponent(arg);
 106         else
 107                 return unescape(arg);
 108 }
 109
 110 function delay(gap) {
 111         var then,now;
 112         then=new Date().getTime();
 113         now=then;
 114         while((now-then)<gap) {
 115                 now=new Date().getTime();
 116         }
 117 }
 118
 119 var notify_hide_timerid = false;
 120
 121 function hide_notify() {
 122         var n = $("notify");
 123         if (n) {
 124                 n.style.display = "none";
 125         }
 126 }
 127
 128 function notify_silent_next() {
 129         notify_silent = true;
 130 }
 131
 132 function notify_real(msg, no_hide, n_type) {
 133
 134         if (notify_silent) {
 135                 notify_silent = false;
 136                 return;
 137         }
 138
 139         var n = $("notify");
 140         var nb = $("notify_body");
 141
 142         if (!n || !nb) return;
 143
 144         if (notify_hide_timerid) {
 145                 window.clearTimeout(notify_hide_timerid);
 146         }
 147
 148         if (msg == "") {
 149                 if (n.style.display == "block") {
 150                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 151                 }
 152                 return;
 153         } else {
 154                 n.style.display = "block";
 155         }
 156
 157         /* types:
 158
 159                 1 - generic
 160                 2 - progress
 161                 3 - error
 162                 4 - info
 163
 164         */
 165
 166         if (typeof __ != 'undefined') {
 167                 msg = __(msg);
 168         }
 169
 170         if (n_type == 1) {
 171                 n.className = "notify";
 172         } else if (n_type == 2) {
 173                 n.className = "notifyProgress";
 174                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 175         } else if (n_type == 3) {
 176                 n.className = "notifyError";
 177                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 178         } else if (n_type == 4) {
 179                 n.className = "notifyInfo";
 180                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 181         }
 182
 183 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 184
 185         nb.innerHTML = msg;
 186
 187         if (!no_hide) {
 188                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 189         }
 190 }
 191
 192 function notify(msg, no_hide) {
 193         notify_real(msg, no_hide, 1);
 194 }
 195
 196 function notify_progress(msg, no_hide) {
 197         notify_real(msg, no_hide, 2);
 198 }
 199
 200 function notify_error(msg, no_hide) {
 201         notify_real(msg, no_hide, 3);
 202
 203 }
 204
 205 function notify_info(msg, no_hide) {
 206         notify_real(msg, no_hide, 4);
 207 }
 208
 209 function printLockingError() {
 210         notify_info("Please wait until operation finishes.");
 211 }
 212
 213 function cleanSelected(element) {
 214         var content = $(element);
 215
 216         for (i = 0; i < content.rows.length; i++) {
 217                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 218         }
 219 }
 220
 221 function getVisibleUnreadHeadlines() {
 222         var content = $("headlinesList");
 223
 224         var rows = new Array();
 225
 226         if (!content) return rows;
 227
 228         for (i = 0; i < content.rows.length; i++) {
 229                 var row_id = content.rows[i].id.replace("RROW-", "");
 230                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 231                                 rows.push(row_id);
 232                 }
 233         }
 234         return rows;
 235 }
 236
 237 function getVisibleHeadlineIds() {
 238
 239         var content = $("headlinesList");
 240
 241         var rows = new Array();
 242
 243         if (!content) return rows;
 244
 245         for (i = 0; i < content.rows.length; i++) {
 246                 var row_id = content.rows[i].id.replace("RROW-", "");
 247                 if (row_id.length > 0) {
 248                                 rows.push(row_id);
 249                 }
 250         }
 251         return rows;
 252 }
 253
 254 function getFirstVisibleHeadlineId() {
 255         if (isCdmMode()) {
 256                 var rows = cdmGetVisibleArticles();
 257                 return rows[0];
 258         } else {
 259                 var rows = getVisibleHeadlineIds();
 260                 return rows[0];
 261         }
 262 }
 263
 264 function getLastVisibleHeadlineId() {
 265         if (isCdmMode()) {
 266                 var rows = cdmGetVisibleArticles();
 267                 return rows[rows.length-1];
 268         } else {
 269                 var rows = getVisibleHeadlineIds();
 270                 return rows[rows.length-1];
 271         }
 272 }
 273
 274 function markHeadline(id) {
 275         var row = $("RROW-" + id);
 276         if (row) {
 277                 var is_active = false;
 278
 279                 if (row.className.match("Active")) {
 280                         is_active = true;
 281                 }
 282                 row.className = row.className.replace("Selected", "");
 283                 row.className = row.className.replace("Active", "");
 284                 row.className = row.className.replace("Insensitive", "");
 285
 286                 if (is_active) {
 287                         row.className = row.className = "Active";
 288                 }
 289
 290                 var check = $("RCHK-" + id);
 291
 292                 if (check) {
 293                         check.checked = true;
 294                 }
 295
 296                 row.className = row.className + "Selected";
 297
 298         }
 299 }
 300
 301 function getFeedIds() {
 302         var content = $("feedsList");
 303
 304         var rows = new Array();
 305
 306         for (i = 0; i < content.rows.length; i++) {
 307                 var id = content.rows[i].id.replace("FEEDR-", "");
 308                 if (id.length > 0) {
 309                         rows.push(id);
 310                 }
 311         }
 312
 313         return rows;
 314 }
 315
 316 function setCookie(name, value, lifetime, path, domain, secure) {
 317
 318         var d = false;
 319
 320         if (lifetime) {
 321                 d = new Date();
 322                 d.setTime(d.getTime() + (lifetime * 1000));
 323         }
 324
 325         console.log("setCookie: " + name + " => " + value + ": " + d);
 326
 327         int_setCookie(name, value, d, path, domain, secure);
 328
 329 }
 330
 331 function int_setCookie(name, value, expires, path, domain, secure) {
 332         document.cookie= name + "=" + escape(value) +
 333                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 334                 ((path) ? "; path=" + path : "") +
 335                 ((domain) ? "; domain=" + domain : "") +
 336                 ((secure) ? "; secure" : "");
 337 }
 338
 339 function delCookie(name, path, domain) {
 340         if (getCookie(name)) {
 341                 document.cookie = name + "=" +
 342                 ((path) ? ";path=" + path : "") +
 343                 ((domain) ? ";domain=" + domain : "" ) +
 344                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 345         }
 346 }
 347
 348
 349 function getCookie(name) {
 350
 351         var dc = document.cookie;
 352         var prefix = name + "=";
 353         var begin = dc.indexOf("; " + prefix);
 354         if (begin == -1) {
 355             begin = dc.indexOf(prefix);
 356             if (begin != 0) return null;
 357         }
 358         else {
 359             begin += 2;
 360         }
 361         var end = document.cookie.indexOf(";", begin);
 362         if (end == -1) {
 363             end = dc.length;
 364         }
 365         return unescape(dc.substring(begin + prefix.length, end));
 366 }
 367
 368 function gotoPreferences() {
 369         document.location.href = "prefs.php";
 370 }
 371
 372 function gotoMain() {
 373         document.location.href = "tt-rss.php";
 374 }
 375
 376 function gotoExportOpml() {
 377         document.location.href = "opml.php?op=Export";
 378 }
 379
 380 function parse_counters(reply, scheduled_call) {
 381         try {
 382
 383                 var feeds_found = 0;
 384
 385                 var elems = JSON.parse(reply.firstChild.nodeValue);
 386
 387                 for (var l = 0; l < elems.length; l++) {
 388
 389                         var id = elems[l].id
 390                         var kind = elems[l].kind;
 391                         var ctr = parseInt(elems[l].counter)
 392                         var error = elems[l].error;
 393                         var has_img = elems[l].has_img;
 394                         var updated = elems[l].updated;
 395                         var title = elems[l].title;
 396                         var xmsg = elems[l].xmsg;
 397
 398                         if (id == "global-unread") {
 399
 400                                 if (ctr > global_unread) {
 401                                         offlineDownloadStart(1);
 402                                 }
 403
 404                                 global_unread = ctr;
 405                                 updateTitle();
 406                                 continue;
 407                         }
 408
 409                         if (id == "subscribed-feeds") {
 410                                 feeds_found = ctr;
 411                                 continue;
 412                         }
 413
 414                         if (kind && kind == "cat") {
 415                                 var catctr = $("FCATCTR-" + id);
 416                                 if (catctr) {
 417                                         catctr.innerHTML = "(" + ctr + ")";
 418                                         if (ctr > 0) {
 419                                                 catctr.className = "catCtrHasUnread";
 420                                         } else {
 421                                                 catctr.className = "catCtrNoUnread";
 422                                         }
 423                                 }
 424                                 continue;
 425                         }
 426
 427                         var feedctr = $("FEEDCTR-" + id);
 428                         var feedu = $("FEEDU-" + id);
 429                         var feedr = $("FEEDR-" + id);
 430                         var feed_img = $("FIMG-" + id);
 431                         var feedlink = $("FEEDL-" + id);
 432                         var feedupd = $("FLUPD-" + id);
 433
 434                         if (updated && feedlink) {
 435                                 if (error) {
 436                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 437                                 } else {
 438                                         feedlink.title = "Updated: " + updated;
 439                                 }
 440                         }
 441
 442                         if (feedupd) {
 443                                 if (!updated) updated = "";
 444
 445                                 if (error) {
 446                                         if (xmsg) {
 447                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 448                                         } else {
 449                                                 feedupd.innerHTML = updated + " (Error)";
 450                                         }
 451                                 } else {
 452                                         if (xmsg) {
 453                                                 feedupd.innerHTML = updated + " " + xmsg;
 454                                         } else {
 455                                                 feedupd.innerHTML = updated;
 456                                         }
 457                                 }
 458                         }
 459
 460                         if (has_img && feed_img) {
 461                                 if (!feed_img.src.match(id + ".ico")) {
 462                                         feed_img.src = getInitParam("icons_url") + "/" + id + ".ico";
 463                                 }
 464                         }
 465
 466                         if (feedlink && title) {
 467                                 feedlink.innerHTML = title;
 468                         }
 469
 470                         if (feedctr && feedu && feedr) {
 471
 472                                 if (parseInt(ctr) > 0 &&
 473                                                 parseInt(feedu.innerHTML) < parseInt(ctr) &&
 474                                                 id == getActiveFeedId() && scheduled_call) {
 475
 476                                         displayNewContentPrompt(id);
 477                                 }
 478
 479                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 480
 481                                 feedu.innerHTML = ctr;
 482
 483                                 if (error) {
 484                                         feedr.className = feedr.className.replace("feed", "error");
 485                                 } else if (id > 0) {
 486                                         feedr.className = feedr.className.replace("error", "feed");
 487                                 }
 488
 489                                 if (ctr > 0) {
 490                                         feedctr.className = "feedCtrHasUnread";
 491                                         if (!feedr.className.match("Unread")) {
 492                                                 var is_selected = feedr.className.match("Selected");
 493
 494                                                 feedr.className = feedr.className.replace("Selected", "");
 495                                                 feedr.className = feedr.className.replace("Unread", "");
 496
 497                                                 feedr.className = feedr.className + "Unread";
 498
 499                                                 if (is_selected) {
 500                                                         feedr.className = feedr.className + "Selected";
 501                                                 }
 502
 503                                         }
 504
 505                                         if (row_needs_hl &&
 506                                                         !getInitParam("theme_options").match('no_highlights')) {
 507                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 508                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 509
 510                                                 cache_invalidate("F:" + id);
 511                                         }
 512                                 } else {
 513                                         feedctr.className = "feedCtrNoUnread";
 514                                         feedr.className = feedr.className.replace("Unread", "");
 515                                 }
 516                         }
 517                 }
 518
 519                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 520
 521                 var feeds_stored = number_of_feeds;
 522
 523                 //console.log("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 524
 525                 if (feeds_stored != feeds_found) {
 526                         number_of_feeds = feeds_found;
 527
 528                         if (feeds_stored != 0 && feeds_found != 0) {
 529                                 console.log("Subscribed feed number changed, refreshing feedlist");
 530                                 setTimeout('updateFeedList(false, false)', 50);
 531                         }
 532                 } else {
 533 /*                      var fl = $("feeds-frame").innerHTML;
 534                         if (fl) {
 535                                 cache_invalidate("FEEDLIST");
 536                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 537                         } */
 538                 }
 539
 540         } catch (e) {
 541                 exception_error("parse_counters", e);
 542         }
 543 }
 544
 545 /*function parse_counters_reply(transport, scheduled_call) {
 546
 547         if (!transport.responseXML) {
 548                 notify_error("Backend did not return valid XML", true);
 549                 return;
 550         }
 551
 552         var reply = transport.responseXML.firstChild;
 553
 554         if (!reply) {
 555                 notify_error("Backend did not return expected XML object", true);
 556                 updateTitle("");
 557                 return;
 558         }
 559
 560         if (!transport_error_check(transport)) return;
 561
 562         var counters = reply.getElementsByTagName("counters")[0];
 563
 564         if (counters)
 565                 parse_counters(counters, scheduled_call);
 566
 567         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 568
 569         if (runtime_info)
 570                 parse_runtime_info(runtime_info);
 571
 572         if (feedsSortByUnread()) {
 573                 resort_feedlist();
 574         }
 575
 576         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 577
 578 } */
 579
 580 function handle_rpc_reply(transport, scheduled_call) {
 581         try {
 582                 if (offline_mode) return false;
 583
 584                 if (!transport.responseText && db) {
 585                         offlineConfirmModeChange();
 586                         return false;
 587                 }
 588
 589                 if (transport.responseXML) {
 590
 591                         if (!transport_error_check(transport)) return false;
 592
 593                         var message = transport.responseXML.getElementsByTagName("message")[0];
 594
 595                         if (message) {
 596                                 message = message.firstChild.nodeValue;
 597
 598                                 if (message == "UPDATE_COUNTERS") {
 599                                         setInitParam("last_article_id", -1);
 600                                         _force_scheduled_update = true;
 601                                 }
 602                         }
 603
 604                         var counters = transport.responseXML.getElementsByTagName("counters")[0];
 605
 606                         if (counters)
 607                                 parse_counters(counters, scheduled_call);
 608
 609                         var runtime_info = transport.responseXML.getElementsByTagName("runtime-info")[0];
 610
 611                         if (runtime_info)
 612                                 parse_runtime_info(runtime_info);
 613
 614                         if (feedsSortByUnread())
 615                                 resort_feedlist();
 616
 617                         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 618
 619                 } else {
 620                         notify_error("Error communicating with server.");
 621                 }
 622
 623         } catch (e) {
 624                 exception_error("handle_rpc_reply", e, transport);
 625         }
 626
 627         return true;
 628 }
 629
 630 function get_feed_unread(id) {
 631         try {
 632                 return parseInt($("FEEDU-" + id).innerHTML);
 633         } catch (e) {
 634                 return -1;
 635         }
 636 }
 637
 638 function get_cat_unread(id) {
 639         try {
 640                 var ctr = $("FCATCTR-" + id).innerHTML;
 641                 ctr = ctr.replace("(", "");
 642                 ctr = ctr.replace(")", "");
 643                 return parseInt(ctr);
 644         } catch (e) {
 645                 return -1;
 646         }
 647 }
 648
 649 function get_feed_entry_unread(elem) {
 650
 651         var id = elem.id.replace("FEEDR-", "");
 652
 653         if (id <= 0) {
 654                 return -1;
 655         }
 656
 657         try {
 658                 return parseInt($("FEEDU-" + id).innerHTML);
 659         } catch (e) {
 660                 return -1;
 661         }
 662 }
 663
 664 function get_feed_entry_name(elem) {
 665         var id = elem.id.replace("FEEDR-", "");
 666         return getFeedName(id);
 667 }
 668
 669
 670 function resort_category(node, cat_mode) {
 671
 672         try {
 673
 674                 console.log("resort_category: " + node + " CM=" + cat_mode);
 675
 676                 var by_unread = feedsSortByUnread();
 677
 678                 var list = node.getElementsByTagName("LI");
 679
 680                 for (i = 0; i < list.length; i++) {
 681
 682                         for (j = i+1; j < list.length; j++) {
 683
 684                                 var tmp_val = get_feed_entry_unread(list[i]);
 685                                 var cur_val = get_feed_entry_unread(list[j]);
 686
 687                                 var tmp_name = get_feed_entry_name(list[i]);
 688                                 var cur_name = get_feed_entry_name(list[j]);
 689
 690                                 /* we don't want to match FEEDR-0 - e.g. Archived articles */
 691
 692                                 var valid_pair = cat_mode || (list[i].id.match(/FEEDR-[1-9]/) &&
 693                                                 list[j].id.match(/FEEDR-[1-9]/));
 694
 695                                 if (valid_pair && ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name)))) {
 696                                         tempnode_i = list[i].cloneNode(true);
 697                                         tempnode_j = list[j].cloneNode(true);
 698                                         node.replaceChild(tempnode_i, list[j]);
 699                                         node.replaceChild(tempnode_j, list[i]);
 700                                 }
 701                         }
 702                 }
 703
 704         } catch (e) {
 705                 exception_error("resort_category", e);
 706         }
 707
 708 }
 709
 710 function resort_feedlist() {
 711         console.log("resort_feedlist");
 712
 713         if ($("FCATLIST--1")) {
 714
 715                 var lists = document.getElementsByTagName("UL");
 716
 717                 for (var i = 0; i < lists.length; i++) {
 718                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 719                                 resort_category(lists[i], true);
 720                         }
 721                 }
 722
 723         } else {
 724                 resort_category($("feedList"), false);
 725         }
 726 }
 727
 728 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 729   * * @author Sundar Dorai-Raj
 730   * * Email: sdoraira@vt.edu
 731   * * This program is free software; you can redistribute it and/or
 732   * * modify it under the terms of the GNU General Public License
 733   * * as published by the Free Software Foundation; either version 2
 734   * * of the License, or (at your option) any later version,
 735   * * provided that any use properly credits the author.
 736   * * This program is distributed in the hope that it will be useful,
 737   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 738   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 739   * * GNU General Public License for more details at http://www.gnu.org * * */
 740
 741   var numbers=".0123456789";
 742   function isNumeric(x) {
 743     // is x a String or a character?
 744     if(x.length>1) {
 745       // remove negative sign
 746       x=Math.abs(x)+"";
 747       for(j=0;j<x.length;j++) {
 748         // call isNumeric recursively for each character
 749         number=isNumeric(x.substring(j,j+1));
 750         if(!number) return number;
 751       }
 752       return number;
 753     }
 754     else {
 755       // if x is number return true
 756       if(numbers.indexOf(x)>=0) return true;
 757       return false;
 758     }
 759   }
 760
 761
 762 function hideOrShowFeeds(hide) {
 763
 764         try {
 765
 766         //console.log("hideOrShowFeeds: " + hide);
 767
 768         if ($("FCATLIST--1")) {
 769
 770                 var lists = document.getElementsByTagName("UL");
 771
 772                 for (var i = 0; i < lists.length; i++) {
 773                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 774
 775                                 var id = lists[i].id.replace("FCATLIST-", "");
 776                                 hideOrShowFeedsCategory(id, hide);
 777                         }
 778                 }
 779
 780         } else {
 781                 hideOrShowFeedsCategory(null, hide);
 782         }
 783
 784         } catch (e) {
 785                 exception_error("hideOrShowFeeds", e);
 786         }
 787 }
 788
 789 function hideOrShowFeedsCategory(id, hide) {
 790
 791         try {
 792
 793                 var node = null;
 794                 var cat_node = null;
 795
 796                 if (id) {
 797                         node = $("FCATLIST-" + id);
 798                         cat_node = $("FCAT-" + id);
 799                 } else {
 800                         node = $("feedList"); // no categories
 801                 }
 802
 803         //      console.log("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 804
 805                 var cat_unread = 0;
 806
 807                 if (!node) {
 808                         console.warn("hideOrShowFeeds: passed node is null, aborting");
 809                         return;
 810                 }
 811
 812         //      console.log("cat: " + node.id);
 813
 814                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 815                         for (i = 0; i < node.childNodes.length; i++) {
 816                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 817
 818                                 if (node.childNodes[i].style != undefined) {
 819
 820                                         var has_unread = (node.childNodes[i].className != "feed" &&
 821                                                 node.childNodes[i].className != "label" &&
 822                                                 !(!getInitParam("hide_read_shows_special") &&
 823                                                         node.childNodes[i].className == "virt") &&
 824                                                 node.childNodes[i].className != "error" &&
 825                                                 node.childNodes[i].className != "tag");
 826
 827         //                              console.log(node.childNodes[i].id + " --> " + has_unread);
 828
 829                                         if (hide && !has_unread) {
 830                                                 //node.childNodes[i].style.display = "none";
 831                                                 var id = node.childNodes[i].id;
 832                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 833                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 834                                         }
 835
 836                                         if (!hide) {
 837                                                 node.childNodes[i].style.display = "list-item";
 838                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 839                                         }
 840
 841                                         if (has_unread) {
 842                                                 node.childNodes[i].style.display = "list-item";
 843                                                 cat_unread++;
 844                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 845                                                 //Effect.Highlight(node.childNodes[i]);
 846                                         }
 847                                 }
 848                         }
 849                 }
 850
 851         //      console.log("end cat: " + node.id + " unread " + cat_unread);
 852
 853                 if (cat_node) {
 854
 855                         if (cat_unread == 0) {
 856                                 if (cat_node.style == undefined) {
 857                                         console.log("ERROR: supplied cat_node " + cat_node +
 858                                                 " has no styles. WTF?");
 859                                         return;
 860                                 }
 861                                 if (hide) {
 862                                         //cat_node.style.display = "none";
 863                                         Effect.Fade(cat_node, {duration : 0.3,
 864                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 865                                 } else {
 866                                         cat_node.style.display = "list-item";
 867                                 }
 868                         } else {
 869                                 try {
 870                                         cat_node.style.display = "list-item";
 871                                 } catch (e) {
 872                                         console.log(e);
 873                                 }
 874                         }
 875                 }
 876
 877 //      console.log("unread for category: " + cat_unread);
 878
 879         } catch (e) {
 880                 exception_error("hideOrShowFeedsCategory", e);
 881         }
 882 }
 883
 884 function selectTableRow(r, do_select) {
 885         r.className = r.className.replace("Selected", "");
 886
 887         if (do_select) {
 888                 r.className = r.className + "Selected";
 889         }
 890 }
 891
 892 function selectTableRowById(elem_id, check_id, do_select) {
 893
 894         try {
 895
 896                 var row = $(elem_id);
 897
 898                 if (row) {
 899                         selectTableRow(row, do_select);
 900                 }
 901
 902                 var check = $(check_id);
 903
 904                 if (check) {
 905                         check.checked = do_select;
 906                 }
 907         } catch (e) {
 908                 exception_error("selectTableRowById", e);
 909         }
 910 }
 911
 912 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 913         classcheck, reset_others) {
 914
 915         var content = $(content_id);
 916
 917         if (!content) {
 918                 console.log("[selectTableRows] Element " + content_id + " not found.");
 919                 return;
 920         }
 921
 922         for (i = 0; i < content.rows.length; i++) {
 923                 if (Element.visible(content.rows[i])) {
 924                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 925
 926                                 if (content.rows[i].id.match(prefix)) {
 927                                         selectTableRow(content.rows[i], do_select);
 928
 929                                         var row_id = content.rows[i].id.replace(prefix, "");
 930                                         var check = $(check_prefix + row_id);
 931
 932                                         if (check) {
 933                                                 check.checked = do_select;
 934                                         }
 935                                 } else if (reset_others) {
 936                                         selectTableRow(content.rows[i], false);
 937
 938                                         var row_id = content.rows[i].id.replace(prefix, "");
 939                                         var check = $(check_prefix + row_id);
 940
 941                                         if (check) {
 942                                                 check.checked = false;
 943                                         }
 944
 945                                 }
 946                         } else if (reset_others) {
 947                                 selectTableRow(content.rows[i], false);
 948
 949                                 var row_id = content.rows[i].id.replace(prefix, "");
 950                                 var check = $(check_prefix + row_id);
 951
 952                                 if (check) {
 953                                         check.checked = false;
 954                                 }
 955
 956                         }
 957                 }
 958         }
 959 }
 960
 961 function getSelectedTableRowIds(content_id, prefix) {
 962
 963         var content = $(content_id);
 964
 965         if (!content) {
 966                 console.log("[getSelectedTableRowIds] Element " + content_id + " not found.");
 967                 return new Array();
 968         }
 969
 970         var sel_rows = new Array();
 971
 972         for (i = 0; i < content.rows.length; i++) {
 973                 if (content.rows[i].id.match(prefix) &&
 974                                 content.rows[i].className.match("Selected")) {
 975
 976                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 977                         sel_rows.push(row_id);
 978                 }
 979         }
 980
 981         return sel_rows;
 982
 983 }
 984
 985 function toggleSelectRowById(sender, id) {
 986         var row = $(id);
 987
 988         if (sender.checked) {
 989                 if (!row.className.match("Selected")) {
 990                         row.className = row.className + "Selected";
 991                 }
 992         } else {
 993                 if (row.className.match("Selected")) {
 994                         row.className = row.className.replace("Selected", "");
 995                 }
 996         }
 997 }
 998
 999 function toggleSelectListRow(sender) {
1000         var parent_row = sender.parentNode;
1001
1002         if (sender.checked) {
1003                 if (!parent_row.className.match("Selected")) {
1004                         parent_row.className = parent_row.className + "Selected";
1005                 }
1006         } else {
1007                 if (parent_row.className.match("Selected")) {
1008                         parent_row.className = parent_row.className.replace("Selected", "");
1009                 }
1010         }
1011 }
1012
1013 function tSR(sender) {
1014         return toggleSelectRow(sender);
1015 }
1016
1017 function toggleSelectRow(sender) {
1018         var parent_row = sender.parentNode.parentNode;
1019
1020         if (sender.checked) {
1021                 if (!parent_row.className.match("Selected")) {
1022                         parent_row.className = parent_row.className + "Selected";
1023                 }
1024         } else {
1025                 if (parent_row.className.match("Selected")) {
1026                         parent_row.className = parent_row.className.replace("Selected", "");
1027                 }
1028         }
1029 }
1030
1031 function getNextUnreadCat(id) {
1032         try {
1033                 var rows = $("feedList").getElementsByTagName("LI");
1034                 var feeds = new Array();
1035
1036                 var unread_only = true;
1037                 var is_cat = true;
1038
1039                 for (var i = 0; i < rows.length; i++) {
1040                         if (rows[i].id.match("FCAT-")) {
1041                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1042
1043                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1044
1045                                         if (cat_id >= 0) {
1046                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1047                                                         feeds.push(cat_id);
1048                                                 }
1049                                         }
1050                                 }
1051                         }
1052                 }
1053
1054                 var idx = feeds.indexOf(id);
1055                 if (idx != -1 && idx < feeds.length) {
1056                         return feeds[idx+1];
1057                 } else {
1058                         return feeds.shift();
1059                 }
1060
1061         } catch (e) {
1062                 exception_error("getNextUnreadCat", e);
1063         }
1064 }
1065
1066 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1067         try {
1068
1069 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1070
1071                 var rows = $("feedList").getElementsByTagName("LI");
1072                 var feeds = new Array();
1073
1074                 for (var i = 0; i < rows.length; i++) {
1075                         if (rows[i].id.match("FEEDR-")) {
1076
1077                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1078
1079                                         if (!unread_only ||
1080                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1081                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1082                                         }
1083                                 }
1084                         }
1085
1086                         if (rows[i].id.match("FCAT-")) {
1087                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1088
1089                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1090
1091                                         if (cat_id >= 0) {
1092                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1093                                                         feeds.push("CAT:"+cat_id);
1094                                                 }
1095                                         }
1096                                 }
1097                         }
1098                 }
1099
1100 //              alert(feeds.toString());
1101
1102                 if (!id) {
1103                         if (direction == "next") {
1104                                 return feeds.shift();
1105                         } else {
1106                                 return feeds.pop();
1107                         }
1108                 } else {
1109                         if (direction == "next") {
1110                                 if (is_cat) id = "CAT:" + id;
1111                                 var idx = feeds.indexOf(id);
1112                                 if (idx != -1 && idx < feeds.length) {
1113                                         return feeds[idx+1];
1114                                 } else {
1115                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1116                                 }
1117                         } else {
1118                                 if (is_cat) id = "CAT:" + id;
1119                                 var idx = feeds.indexOf(id);
1120                                 if (idx > 0) {
1121                                         return feeds[idx-1];
1122                                 } else {
1123                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1124                                 }
1125                         }
1126
1127                 }
1128
1129         } catch (e) {
1130                 exception_error("getRelativeFeedId2", e);
1131         }
1132 }
1133
1134 function checkboxToggleElement(elem, id) {
1135         if (elem.checked) {
1136                 Effect.Appear(id, {duration : 0.5});
1137         } else {
1138                 Effect.Fade(id, {duration : 0.5});
1139         }
1140 }
1141
1142 function dropboxSelect(e, v) {
1143         for (i = 0; i < e.length; i++) {
1144                 if (e[i].value == v) {
1145                         e.selectedIndex = i;
1146                         break;
1147                 }
1148         }
1149 }
1150
1151 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1152 // bugfixed just a little bit :-)
1153 function getURLParam(strParamName){
1154   var strReturn = "";
1155   var strHref = window.location.href;
1156
1157   if (strHref.indexOf("#") == strHref.length-1) {
1158                 strHref = strHref.substring(0, strHref.length-1);
1159   }
1160
1161   if ( strHref.indexOf("?") > -1 ){
1162     var strQueryString = strHref.substr(strHref.indexOf("?"));
1163     var aQueryString = strQueryString.split("&");
1164     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1165       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1166         var aParam = aQueryString[iParam].split("=");
1167         strReturn = aParam[1];
1168         break;
1169       }
1170     }
1171   }
1172   return strReturn;
1173 }
1174
1175 function leading_zero(p) {
1176         var s = String(p);
1177         if (s.length == 1) s = "0" + s;
1178         return s;
1179 }
1180
1181 function make_timestamp() {
1182         var d = new Date();
1183
1184         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1185                         ":" + leading_zero(d.getSeconds());
1186 }
1187
1188
1189 function closeErrorBox() {
1190
1191         if (Element.visible("errorBoxShadow")) {
1192                 Element.hide("dialog_overlay");
1193                 Element.hide("errorBoxShadow");
1194
1195                 enableHotkeys();
1196         }
1197
1198         return false;
1199 }
1200
1201 function closeInfoBox(cleanup) {
1202
1203         try {
1204                 enableHotkeys();
1205
1206                 if (Element.visible("infoBoxShadow")) {
1207                         Element.hide("dialog_overlay");
1208                         Element.hide("infoBoxShadow");
1209
1210                         if (cleanup) $("infoBox").innerHTML = "&nbsp;";
1211                 }
1212         } catch (e) {
1213                 exception_error("closeInfoBox", e);
1214         }
1215
1216         return false;
1217 }
1218
1219
1220 function displayDlg(id, param, callback) {
1221
1222         notify_progress("Loading, please wait...", true);
1223
1224         disableHotkeys();
1225
1226         var query = "?op=dlg&id=" +
1227                 param_escape(id) + "&param=" + param_escape(param);
1228
1229         new Ajax.Request("backend.php", {
1230                 parameters: query,
1231                 onComplete: function (transport) {
1232                         infobox_callback2(transport);
1233                         if (callback) callback(transport);
1234                 } });
1235
1236         return false;
1237 }
1238
1239 function infobox_submit_callback2(transport) {
1240         closeInfoBox();
1241
1242         try {
1243                 // called from prefs, reload tab
1244                 if (typeof active_tab != 'undefined' && active_tab) {
1245                         selectTab(active_tab, false);
1246                 }
1247         } catch (e) { }
1248
1249         if (transport.responseText) {
1250                 notify_info(transport.responseText);
1251         }
1252 }
1253
1254 function infobox_callback2(transport) {
1255         try {
1256
1257                 console.log("infobox_callback2");
1258
1259                 var box = $('infoBox');
1260
1261                 if (box) {
1262
1263                         if (!getInitParam("infobox_disable_overlay")) {
1264                                 Element.show("dialog_overlay");
1265                         }
1266
1267                         box.innerHTML=transport.responseText;
1268                         Element.show("infoBoxShadow");
1269                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1270
1271
1272                 }
1273
1274                 disableHotkeys();
1275
1276                 notify("");
1277         } catch (e) {
1278                 exception_error("infobox_callback2", e);
1279         }
1280 }
1281
1282 function createFilter() {
1283
1284         try {
1285
1286                 var form = document.forms['filter_add_form'];
1287                 var reg_exp = form.reg_exp.value;
1288
1289                 if (reg_exp == "") {
1290                         alert(__("Can't add filter: nothing to match on."));
1291                         return false;
1292                 }
1293
1294                 var query = Form.serialize("filter_add_form");
1295
1296                 // we can be called from some other tab in Prefs
1297                 if (typeof active_tab != 'undefined' && active_tab) {
1298                         active_tab = "filterConfig";
1299                 }
1300
1301                 new Ajax.Request("backend.php?" + query, {
1302                         onComplete: function (transport) {
1303                                 infobox_submit_callback2(transport);
1304                         } });
1305
1306                 return true;
1307
1308         } catch (e) {
1309                 exception_error("createFilter", e);
1310         }
1311 }
1312
1313 function isValidURL(s) {
1314         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1315 }
1316
1317 function subscribeToFeed() {
1318
1319         try {
1320
1321         var form = document.forms['feed_add_form'];
1322         var feed_url = form.feed_url.value;
1323
1324         if (feed_url == "") {
1325                 alert(__("Can't subscribe: no feed URL given."));
1326                 return false;
1327         }
1328
1329         notify_progress(__("Subscribing to feed..."), true);
1330
1331         var query = Form.serialize("feed_add_form");
1332
1333         console.log("subscribe q: " + query);
1334
1335         Form.disable("feed_add_form");
1336
1337         new Ajax.Request("backend.php", {
1338                 parameters: query,
1339                 onComplete: function(transport) {
1340                         //dlg_frefresh_callback(transport);
1341
1342                         try {
1343
1344                                 if (!transport.responseXML)
1345                                         console.log(transport.responseText);
1346
1347                                 var result = transport.responseXML.getElementsByTagName('result')[0];
1348                                 var rc = parseInt(result.getAttribute('code'));
1349
1350                                 Form.enable("feed_add_form");
1351
1352                                 notify('');
1353
1354                                 switch (rc) {
1355                                 case 1:
1356                                         closeInfoBox();
1357                                         notify_info(__("Subscribed to %s").replace("%s", feed_url));
1358
1359                                         if (inPreferences()) {
1360                                                 updateFeedList();
1361                                         } else {
1362                                                 setTimeout('updateFeedList(false, false)', 50);
1363                                         }
1364                                         break;
1365                                 case 2:
1366                                         alert(__("Specified URL seems to be invalid."));
1367                                         break;
1368                                 case 3:
1369                                         alert(__("Specified URL doesn't seem to contain any feeds."));
1370                                         break;
1371                                 case 4:
1372                                         new Ajax.Request("backend.php", {
1373                                                 parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
1374                                                 onComplete: function(transport) {
1375                                                         var result = transport.responseXML.getElementsByTagName('urls')[0];
1376                                                         var feeds = JSON.parse(result.firstChild.nodeValue);
1377                                                         var select = document.getElementById("faad_feeds_container_select");
1378
1379                                                         while (select.hasChildNodes()) {
1380                                                                 select.removeChild(elem.firstChild);
1381                                                         }
1382                                                         var count = 0;
1383                                                         for (var feedUrl in feeds) {
1384                                                                 select.insert(new Option(feeds[feedUrl], feedUrl, false));
1385                                                                 count++;
1386                                                         }
1387                                                         if (count > 5) count = 5;
1388                                                         select.size = count;
1389
1390                                                         Effect.Appear('fadd_feeds_container', {duration : 0.5});
1391                                                 }
1392                                         });
1393                                         break;
1394                                 case 5:
1395                                         alert(__("Couldn't download the specified URL."));
1396                                         break;
1397                                 case 0:
1398                                         alert(__("You are already subscribed to this feed."));
1399                                         break;
1400                                 }
1401
1402                         } catch (e) {
1403                                 exception_error("subscribeToFeed", e);
1404                         }
1405
1406                 } });
1407
1408         } catch (e) {
1409                 exception_error("subscribeToFeed", e);
1410         }
1411
1412         return false;
1413 }
1414
1415 function filterCR(e, f)
1416 {
1417      var key;
1418
1419      if(window.event)
1420           key = window.event.keyCode;     //IE
1421      else
1422           key = e.which;     //firefox
1423
1424         if (key == 13) {
1425                 if (typeof f != 'undefined') {
1426                         f();
1427                         return false;
1428                 } else {
1429                         return false;
1430                 }
1431         } else {
1432                 return true;
1433         }
1434 }
1435
1436 function getInitParam(key) {
1437         return init_params[key];
1438 }
1439
1440 function setInitParam(key, value) {
1441         init_params[key] = value;
1442 }
1443
1444 function fatalError(code, msg, ext_info) {
1445         try {
1446
1447                 if (!ext_info) ext_info = "N/A";
1448
1449                 if (code == 6) {
1450                         window.location.href = "tt-rss.php";
1451                 } else if (code == 5) {
1452                         window.location.href = "db-updater.php";
1453                 } else {
1454
1455                         if (msg == "") msg = "Unknown error";
1456
1457                         var ebc = $("xebContent");
1458
1459                         if (ebc) {
1460
1461                                 Element.show("dialog_overlay");
1462                                 Element.show("errorBoxShadow");
1463                                 Element.hide("xebBtn");
1464
1465                                 if (ext_info) {
1466                                         if (ext_info.responseText) {
1467                                                 ext_info = ext_info.responseText;
1468                                         }
1469                                 }
1470
1471                                 ebc.innerHTML =
1472                                         "<div><b>Error message:</b></div>" +
1473                                         "<pre>" + msg + "</pre>" +
1474                                         "<div><b>Additional information:</b></div>" +
1475                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1476                         }
1477                 }
1478
1479         } catch (e) {
1480                 exception_error("fatalError", e);
1481         }
1482 }
1483
1484 function getFeedName(id, is_cat) {
1485         var e;
1486
1487         if (is_cat) {
1488                 e = $("FCATN-" + id);
1489         } else {
1490                 e = $("FEEDN-" + id);
1491         }
1492         if (e) {
1493                 return e.innerHTML.stripTags();
1494         } else {
1495                 return null;
1496         }
1497 }
1498
1499 function filterDlgCheckType(sender) {
1500
1501         try {
1502
1503                 var ftype = sender[sender.selectedIndex].value;
1504
1505                 var form = document.forms["filter_add_form"];
1506
1507                 if (!form) {
1508                         form = document.forms["filter_edit_form"];
1509                 }
1510
1511                 if (!form) {
1512                         console.log("filterDlgCheckType: can't find form!");
1513                         return;
1514                 }
1515
1516                 // if selected filter type is 5 (Date) enable the modifier dropbox
1517                 if (ftype == 5) {
1518                         Element.show("filter_dlg_date_mod_box");
1519                         Element.show("filter_dlg_date_chk_box");
1520                 } else {
1521                         Element.hide("filter_dlg_date_mod_box");
1522                         Element.hide("filter_dlg_date_chk_box");
1523
1524                 }
1525
1526         } catch (e) {
1527                 exception_error("filterDlgCheckType", e);
1528         }
1529
1530 }
1531
1532 function filterDlgCheckAction(sender) {
1533
1534         try {
1535
1536                 var action = sender[sender.selectedIndex].value;
1537
1538                 var form = document.forms["filter_add_form"];
1539
1540                 if (!form) {
1541                         form = document.forms["filter_edit_form"];
1542                 }
1543
1544                 if (!form) {
1545                         console.log("filterDlgCheckAction: can't find form!");
1546                         return;
1547                 }
1548
1549                 var action_param = $("filter_dlg_param_box");
1550
1551                 if (!action_param) {
1552                         console.log("filterDlgCheckAction: can't find action param box!");
1553                         return;
1554                 }
1555
1556                 // if selected action supports parameters, enable params field
1557                 if (action == 4 || action == 6 || action == 7) {
1558                         Element.show(action_param);
1559                         if (action != 7) {
1560                                 Element.show(form.action_param);
1561                                 Element.hide(form.action_param_label);
1562                         } else {
1563                                 Element.show(form.action_param_label);
1564                                 Element.hide(form.action_param);
1565                         }
1566                 } else {
1567                         Element.hide(action_param);
1568                 }
1569
1570         } catch (e) {
1571                 exception_error("filterDlgCheckAction", e);
1572         }
1573
1574 }
1575
1576 function filterDlgCheckDate() {
1577         try {
1578                 var form = document.forms["filter_add_form"];
1579
1580                 if (!form) {
1581                         form = document.forms["filter_edit_form"];
1582                 }
1583
1584                 if (!form) {
1585                         console.log("filterDlgCheckAction: can't find form!");
1586                         return;
1587                 }
1588
1589                 var reg_exp = form.reg_exp.value;
1590
1591                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
1592
1593                 new Ajax.Request("backend.php", {
1594                         parameters: query,
1595                         onComplete: function(transport) {
1596
1597                                 var form = document.forms["filter_add_form"];
1598
1599                                 if (!form) {
1600                                         form = document.forms["filter_edit_form"];
1601                                 }
1602
1603                                 if (transport.responseXML) {
1604                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1605
1606                                         if (result && result.firstChild) {
1607                                                 if (result.firstChild.nodeValue == "1") {
1608
1609                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1610
1611                                                         return;
1612                                                 }
1613                                         }
1614                                 }
1615
1616                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1617
1618                         } });
1619
1620
1621         } catch (e) {
1622                 exception_error("filterDlgCheckDate", e);
1623         }
1624 }
1625
1626 function explainError(code) {
1627         return displayDlg("explainError", code);
1628 }
1629
1630 // this only searches loaded headlines list, not in CDM
1631 function getRelativePostIds(id, limit) {
1632
1633         if (!limit) limit = 3;
1634
1635         //console.log("getRelativePostIds: " + id + " limit=" + limit);
1636
1637         var ids = new Array();
1638         var container = $("headlinesList");
1639
1640         if (container) {
1641                 var rows = container.rows;
1642
1643                 for (var i = 0; i < rows.length; i++) {
1644                         var r_id = rows[i].id.replace("RROW-", "");
1645
1646                         if (r_id == id) {
1647                                 for (var k = 1; k <= limit; k++) {
1648                                         var nid = false;
1649
1650                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1651                                         if (nid) ids.push(nid);
1652
1653                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1654                                         if (nid) ids.push(nid);
1655                                 }
1656
1657                                 return ids;
1658                         }
1659                 }
1660         }
1661
1662         return false;
1663 }
1664
1665 function openArticleInNewWindow(id) {
1666         try {
1667                 console.log("openArticleInNewWindow: " + id);
1668
1669                 var query = "?op=rpc&subop=getArticleLink&id=" + id;
1670                 var wname = "ttrss_article_" + id;
1671
1672                 console.log(query + " " + wname);
1673
1674                 var w = window.open("", wname);
1675
1676                 if (!w) notify_error("Failed to open window for the article");
1677
1678                 new Ajax.Request("backend.php", {
1679                         parameters: query,
1680                         onComplete: function(transport) {
1681
1682                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1683                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1684
1685                                         console.log("open_article received link: " + link);
1686
1687                                         if (link && id) {
1688
1689                                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
1690
1691                                                 console.log("link url: " + link.firstChild.nodeValue + ", wname " + wname);
1692
1693                                                 var w = window.open(link.firstChild.nodeValue, wname);
1694
1695                                                 if (!w) { notify_error("Failed to load article in new window"); }
1696
1697                                                 if (id) {
1698                                                         id = id.firstChild.nodeValue;
1699                                                         if (!$("headlinesList")) {
1700                                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
1701                                                         }
1702                                                 }
1703                                         } else {
1704                                                 notify_error("Can't open article: received invalid article link");
1705                                         }
1706                                 } });
1707
1708         } catch (e) {
1709                 exception_error("openArticleInNewWindow", e);
1710         }
1711 }
1712
1713 function isCdmMode() {
1714         return !$("headlinesList");
1715 }
1716
1717 function getSelectedArticleIds2() {
1718         var rows = new Array();
1719         var cdm_mode = isCdmMode();
1720
1721         if (cdm_mode) {
1722                 rows = cdmGetSelectedArticles();
1723         } else {
1724                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1725         }
1726
1727         var ids = new Array();
1728
1729         for (var i = 0; i < rows.length; i++) {
1730                 var chk = $("RCHK-" + rows[i]);
1731                 if (chk && chk.checked) {
1732                         ids.push(rows[i]);
1733                 }
1734         }
1735
1736         return ids;
1737 }
1738
1739 function displayHelpInfobox(topic_id) {
1740
1741         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1742
1743         var w = window.open(url, "ttrss_help",
1744                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1745
1746 }
1747
1748 function loading_set_progress(p) {
1749         try {
1750                 if (p < last_progress_point || !Element.visible("overlay")) return;
1751
1752                 console.log("loading_set_progress : " + p + " (" + last_progress_point + ")");
1753
1754                 var o = $("l_progress_i");
1755
1756 //              o.style.width = (p * 2) + "px";
1757
1758                 new Effect.Scale(o, p, {
1759                         scaleY : false,
1760                         scaleFrom : last_progress_point,
1761                         scaleMode: { originalWidth : 200 },
1762                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1763
1764                 last_progress_point = p;
1765
1766         } catch (e) {
1767                 exception_error("loading_set_progress", e);
1768         }
1769 }
1770
1771 function remove_splash() {
1772         if (Element.visible("overlay")) {
1773                 console.log("about to remove splash, OMG!");
1774                 Element.hide("overlay");
1775                 console.log("removed splash!");
1776         }
1777 }
1778
1779 function getSelectedFeedsFromBrowser() {
1780
1781         var list = $("browseFeedList");
1782
1783         var selected = new Array();
1784
1785         for (i = 0; i < list.childNodes.length; i++) {
1786                 var child = list.childNodes[i];
1787                 if (child.id && child.id.match("FBROW-")) {
1788                         var id = child.id.replace("FBROW-", "");
1789
1790                         var cb = $("FBCHK-" + id);
1791
1792                         if (cb.checked) {
1793                                 selected.push(id);
1794                         }
1795                 }
1796         }
1797
1798         return selected;
1799 }
1800
1801 function updateFeedBrowser() {
1802         try {
1803
1804                 var query = Form.serialize("feed_browser");
1805
1806                 Element.show('feed_browser_spinner');
1807
1808                 new Ajax.Request("backend.php", {
1809                         parameters: query,
1810                         onComplete: function(transport) {
1811                                 notify('');
1812
1813                                 Element.hide('feed_browser_spinner');
1814
1815                                 var c = $("browseFeedList");
1816                                 var r = transport.responseXML.getElementsByTagName("content")[0];
1817                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
1818                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
1819
1820                                 if (c && r) {
1821                                         c.innerHTML = r.firstChild.nodeValue;
1822                                 }
1823
1824                                 if (parseInt(mode.getAttribute("value")) == 2) {
1825                                         Element.show('feed_archive_remove');
1826                                 } else {
1827                                         Element.hide('feed_archive_remove');
1828                                 }
1829
1830                         } });
1831
1832         } catch (e) {
1833                 exception_error("updateFeedBrowser", e);
1834         }
1835
1836 }
1837
1838 function transport_error_check(transport) {
1839         try {
1840                 if (transport.responseXML) {
1841                         var error = transport.responseXML.getElementsByTagName("error")[0];
1842
1843                         if (error) {
1844                                 var code = error.getAttribute("error-code");
1845                                 var msg = error.getAttribute("error-msg");
1846                                 if (code != 0) {
1847                                         fatalError(code, msg);
1848                                         return false;
1849                                 }
1850                         }
1851                 }
1852         } catch (e) {
1853                 exception_error("check_for_error_xml", e);
1854         }
1855         return true;
1856 }
1857
1858 function strip_tags(s) {
1859         return s.replace(/<\/?[^>]+(>|$)/g, "");
1860 }
1861
1862 function truncate_string(s, length) {
1863         if (!length) length = 30;
1864         var tmp = s.substring(0, length);
1865         if (s.length > length) tmp += "&hellip;";
1866         return tmp;
1867 }
1868
1869 function hotkey_prefix_timeout() {
1870         try {
1871
1872                 var date = new Date();
1873                 var ts = Math.round(date.getTime() / 1000);
1874
1875                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
1876                         console.log("hotkey_prefix seems to be stuck, aborting");
1877                         hotkey_prefix_pressed = false;
1878                         hotkey_prefix = false;
1879                         Element.hide('cmdline');
1880                 }
1881
1882                 setTimeout("hotkey_prefix_timeout()", 1000);
1883
1884         } catch  (e) {
1885                 exception_error("hotkey_prefix_timeout", e);
1886         }
1887 }
1888
1889 function hideAuxDlg() {
1890         try {
1891                 Element.hide('auxDlg');
1892         } catch (e) {
1893                 exception_error("hideAuxDlg", e);
1894         }
1895 }
1896
1897 function displayNewContentPrompt(id) {
1898         try {
1899
1900                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
1901                         __("New articles available in this feed (click to show)") + "</a>";
1902
1903                 msg = msg.replace("%s", getFeedName(id));
1904
1905                 $('auxDlg').innerHTML = msg;
1906
1907                 new Effect.Appear('auxDlg', {duration : 0.5});
1908
1909         } catch (e) {
1910                 exception_error("displayNewContentPrompt", e);
1911         }
1912 }
1913
1914 function feedBrowserSubscribe() {
1915         try {
1916
1917                 var selected = getSelectedFeedsFromBrowser();
1918
1919                 var mode = document.forms['feed_browser'].mode;
1920
1921                 mode = mode[mode.selectedIndex].value;
1922
1923                 if (selected.length > 0) {
1924                         closeInfoBox();
1925
1926                         notify_progress("Loading, please wait...", true);
1927
1928                         var query = "?op=rpc&subop=massSubscribe&ids="+
1929                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1930
1931                         new Ajax.Request("backend.php", {
1932                                 parameters: query,
1933                                 onComplete: function(transport) {
1934
1935                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1936                                         var nf_value = nf.getAttribute("value");
1937
1938                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1939
1940                                         if (inPreferences()) {
1941                                                 updateFeedList();
1942                                         } else {
1943                                                 setTimeout('updateFeedList(false, false)', 50);
1944                                         }
1945                                 } });
1946
1947                 } else {
1948                         alert(__("No feeds are selected."));
1949                 }
1950
1951         } catch (e) {
1952                 exception_error("feedBrowserSubscribe", e);
1953         }
1954 }
1955
1956 function feedArchiveRemove() {
1957         try {
1958
1959                 var selected = getSelectedFeedsFromBrowser();
1960
1961                 if (selected.length > 0) {
1962
1963                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1964
1965                         if (confirm(pr)) {
1966                                 Element.show('feed_browser_spinner');
1967
1968                                 var query = "?op=rpc&subop=remarchived&ids=" +
1969                                         param_escape(selected.toString());;
1970
1971                                 new Ajax.Request("backend.php", {
1972                                         parameters: query,
1973                                         onComplete: function(transport) {
1974                                                 updateFeedBrowser();
1975                                         } });
1976                         }
1977
1978                 } else {
1979                         alert(__("No feeds are selected."));
1980                 }
1981
1982         } catch (e) {
1983                 exception_error("feedArchiveRemove", e);
1984         }
1985 }
1986
1987 function uploadIconHandler(rc) {
1988         try {
1989                 switch (rc) {
1990                         case 0:
1991                                 notify_info("Upload complete.");
1992                                 if (inPreferences()) {
1993                                         updateFeedList();
1994                                 } else {
1995                                         setTimeout('updateFeedList(false, false)', 50);
1996                                 }
1997                                 break;
1998                         case 1:
1999                                 notify_error("Upload failed: icon is too big.");
2000                                 break;
2001                         case 2:
2002                                 notify_error("Upload failed.");
2003                                 break;
2004                 }
2005
2006         } catch (e) {
2007                 exception_error("uploadIconHandler", e);
2008         }
2009 }
2010
2011 function removeFeedIcon(id) {
2012
2013         try {
2014
2015                 if (confirm(__("Remove stored feed icon?"))) {
2016                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
2017
2018                         console.log(query);
2019
2020                         notify_progress("Removing feed icon...", true);
2021
2022                         new Ajax.Request("backend.php", {
2023                                 parameters: query,
2024                                 onComplete: function(transport) {
2025                                         notify_info("Feed icon removed.");
2026                                         if (inPreferences()) {
2027                                                 updateFeedList();
2028                                         } else {
2029                                                 setTimeout('updateFeedList(false, false)', 50);
2030                                         }
2031                                 } });
2032                 }
2033
2034                 return false;
2035         } catch (e) {
2036                 exception_error("uploadFeedIcon", e);
2037         }
2038 }
2039
2040 function uploadFeedIcon() {
2041
2042         try {
2043
2044                 var file = $("icon_file");
2045
2046                 if (file.value.length == 0) {
2047                         alert(__("Please select an image file to upload."));
2048                 } else {
2049                         if (confirm(__("Upload new icon for this feed?"))) {
2050                                 notify_progress("Uploading, please wait...", true);
2051                                 return true;
2052                         }
2053                 }
2054
2055                 return false;
2056
2057         } catch (e) {
2058                 exception_error("uploadFeedIcon", e);
2059         }
2060 }
2061
2062 function addLabel(select, callback) {
2063
2064         try {
2065
2066                 var caption = prompt(__("Please enter label caption:"), "");
2067
2068                 if (caption != undefined) {
2069
2070                         if (caption == "") {
2071                                 alert(__("Can't create label: missing caption."));
2072                                 return false;
2073                         }
2074
2075                         var query = "?op=pref-labels&subop=add&caption=" +
2076                                 param_escape(caption);
2077
2078                         if (select)
2079                                 query += "&output=select";
2080
2081                         notify_progress("Loading, please wait...", true);
2082
2083                         if (inPreferences() && !select) active_tab = "labelConfig";
2084
2085                         new Ajax.Request("backend.php", {
2086                                 parameters: query,
2087                                 onComplete: function(transport) {
2088                                         if (callback) {
2089                                                 callback(transport);
2090                                         } else if (inPreferences()) {
2091                                                 infobox_submit_callback2(transport);
2092                                         } else {
2093                                                 updateFeedList();
2094                                         }
2095                         } });
2096
2097                 }
2098
2099         } catch (e) {
2100                 exception_error("addLabel", e);
2101         }
2102 }
2103
2104 function quickAddFeed() {
2105         displayDlg('quickAddFeed', '',
2106            function () {$('feed_url').focus();});
2107 }
2108
2109 function quickAddFilter() {
2110         displayDlg('quickAddFilter', '',
2111            function () {document.forms['filter_add_form'].reg_exp.focus();});
2112 }
2113
2114 function unsubscribeFeed(feed_id, title) {
2115
2116         var msg = __("Unsubscribe from %s?").replace("%s", title);
2117
2118         if (title == undefined || confirm(msg)) {
2119                 notify_progress("Removing feed...");
2120
2121                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
2122
2123                 new Ajax.Request("backend.php", {
2124                         parameters: query,
2125                         onComplete: function(transport) {
2126
2127                                         closeInfoBox();
2128
2129                                         if (inPreferences()) {
2130                                                 updateFeedList();
2131                                         } else {
2132                                                 dlg_frefresh_callback(transport, feed_id);
2133                                         }
2134
2135                                 } });
2136         }
2137
2138         return false;
2139 }
2140
2141
2142 function backend_sanity_check_callback(transport) {
2143
2144         try {
2145
2146                 if (sanity_check_done) {
2147                         fatalError(11, "Sanity check request received twice. This can indicate "+
2148                       "presence of Firebug or some other disrupting extension. "+
2149                                 "Please disable it and try again.");
2150                         return;
2151                 }
2152
2153                 if (!transport.responseXML) {
2154                         if (!store) {
2155                                 fatalError(3, "Sanity check: Received reply is not XML",
2156                                         transport.responseText);
2157                                 return;
2158                         } else {
2159                                 init_offline();
2160                                 return;
2161                         }
2162                 }
2163
2164                 if (getURLParam("offline")) {
2165                         return init_offline();
2166                 }
2167
2168                 var reply = transport.responseXML.getElementsByTagName("error")[0];
2169
2170                 if (!reply) {
2171                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
2172                         return;
2173                 }
2174
2175                 var error_code = reply.getAttribute("error-code");
2176
2177                 if (error_code && error_code != 0) {
2178                         return fatalError(error_code, reply.getAttribute("error-msg"));
2179                 }
2180
2181                 console.log("sanity check ok");
2182
2183                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
2184
2185                 if (params) {
2186                         console.log('reading init-params...');
2187
2188                         params = JSON.parse(params.firstChild.nodeValue);
2189
2190                         if (params) {
2191                                 for (k in params) {
2192
2193                                         var v = params[k];
2194
2195                                         console.log("IP: " + k + " => " + v);
2196
2197                                         if (db) {
2198                                                 db.execute("DELETE FROM init_params WHERE key = ?", [k]);
2199                                                 db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
2200                                                         [k, v]);
2201                                         }
2202                                 }
2203                         }
2204
2205                         init_params = params;
2206                 }
2207
2208                 sanity_check_done = true;
2209
2210                 init_second_stage();
2211
2212         } catch (e) {
2213                 exception_error("backend_sanity_check_callback", e, transport);
2214         }
2215 }
2216
2217 function has_local_storage() {
2218         try {
2219                 return 'localStorage' in window && window['localStorage'] != null;
2220         } catch (e) {
2221                 return false;
2222         }
2223 }
2224
2225 function catSelectOnChange(elem) {
2226         try {
2227                 var value = elem[elem.selectedIndex].value;
2228                 var def = elem.getAttribute('default');
2229
2230                 if (value == "ADD_CAT") {
2231
2232                         if (def)
2233                                 dropboxSelect(elem, def);
2234                         else
2235                                 elem.selectedIndex = 0;
2236
2237                         quickAddCat(elem);
2238                 }
2239
2240         } catch (e) {
2241                 exception_error("catSelectOnChange", e);
2242         }
2243 }
2244
2245 function quickAddCat(elem) {
2246         try {
2247                 var cat = prompt(__("Please enter category title:"));
2248
2249                 if (cat) {
2250
2251                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
2252
2253                         notify_progress("Loading, please wait...", true);
2254
2255                         new Ajax.Request("backend.php", {
2256                                 parameters: query,
2257                                 onComplete: function (transport) {
2258                                         var response = transport.responseXML;
2259                                         var select = response.getElementsByTagName("select")[0];
2260                                         var options = select.getElementsByTagName("option");
2261
2262                                         dropbox_replace_options(elem, options);
2263
2264                                         notify('');
2265
2266                         } });
2267
2268                 }
2269
2270         } catch (e) {
2271                 exception_error("quickAddCat", e);
2272         }
2273 }
2274
2275 function genUrlChangeKey(feed, is_cat) {
2276
2277         try {
2278                 var ok = confirm(__("Generate new syndication address for this feed?"));
2279
2280                 if (ok) {
2281
2282                         notify_progress("Trying to change address...", true);
2283
2284                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
2285                                 "&is_cat=" + param_escape(is_cat);
2286
2287                         new Ajax.Request("backend.php", {
2288                                 parameters: query,
2289                                 onComplete: function(transport) {
2290                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
2291
2292                                                 var e = $('gen_feed_url');
2293
2294                                                 if (new_link) {
2295
2296                                                         new_link = new_link.firstChild.nodeValue;
2297
2298                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
2299                                                                 "&amp;key=" + new_link);
2300
2301                                                         e.href = e.href.replace(/\&amp;key=.*$/,
2302                                                                 "&amp;key=" + new_link);
2303
2304                                                         new Effect.Highlight(e);
2305
2306                                                         notify('');
2307
2308                                                 } else {
2309                                                         notify_error("Could not change feed URL.");
2310                                                 }
2311                                 } });
2312                 }
2313         } catch (e) {
2314                 exception_error("genUrlChangeKey", e);
2315         }
2316         return false;
2317 }
2318
2319 function labelSelectOnChange(elem) {
2320         try {
2321                 var value = elem[elem.selectedIndex].value;
2322                 var def = elem.getAttribute('default');
2323
2324                 if (value == "ADD_LABEL") {
2325
2326                         if (def)
2327                                 dropboxSelect(elem, def);
2328                         else
2329                                 elem.selectedIndex = 0;
2330
2331                         addLabel(elem, function(transport) {
2332
2333                                         try {
2334
2335                                                 var response = transport.responseXML;
2336                                                 var select = response.getElementsByTagName("select")[0];
2337                                                 var options = select.getElementsByTagName("option");
2338
2339                                                 dropbox_replace_options(elem, options);
2340
2341                                                 notify('');
2342                                         } catch (e) {
2343                                                 exception_error("addLabel", e);
2344                                         }
2345                         });
2346                 }
2347
2348         } catch (e) {
2349                 exception_error("labelSelectOnChange", e);
2350         }
2351 }
2352
2353 function dropbox_replace_options(elem, options) {
2354
2355         try {
2356                 while (elem.hasChildNodes())
2357                         elem.removeChild(elem.firstChild);
2358
2359                 var sel_idx = -1;
2360
2361                 for (var i = 0; i < options.length; i++) {
2362                         var text = options[i].firstChild.nodeValue;
2363                         var value = options[i].getAttribute("value");
2364
2365                         if (value == undefined) value = text;
2366
2367                         var issel = options[i].getAttribute("selected") == "1";
2368
2369                         var option = new Option(text, value, issel);
2370
2371                         if (options[i].getAttribute("disabled"))
2372                                 option.setAttribute("disabled", true);
2373
2374                         elem.insert(option);
2375
2376                         if (issel) sel_idx = i;
2377                 }
2378
2379                 // Chrome doesn't seem to just select stuff when you pass new Option(x, y, true)
2380                 if (sel_idx >= 0) elem.selectedIndex = sel_idx;
2381
2382         } catch (e) {
2383                 exception_error("dropbox_replace_options", e);
2384         }
2385 }