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
   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 function is_opera() {
  15         return window.opera;
  16 }
  17
  18 function exception_error(location, e, ext_info) {
  19         var msg = format_exception_error(location, e);
  20
  21         if (!ext_info) ext_info = "N/A";
  22
  23         disableHotkeys();
  24
  25         try {
  26
  27                 var ebc = $("xebContent");
  28
  29                 if (ebc) {
  30
  31                         Element.show("dialog_overlay");
  32                         Element.show("errorBoxShadow");
  33
  34                         if (ext_info) {
  35                                 if (ext_info.responseText) {
  36                                         ext_info = ext_info.responseText;
  37                                 }
  38                         }
  39
  40                         ebc.innerHTML =
  41                                 "<div><b>Error message:</b></div>" +
  42                                 "<pre>" + msg + "</pre>" +
  43                                 "<div><b>Additional information:</b></div>" +
  44                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  45
  46                 } else {
  47                         alert(msg);
  48                 }
  49
  50         } catch (e) {
  51                 alert(msg);
  52
  53         }
  54
  55 }
  56
  57 function format_exception_error(location, e) {
  58         var msg;
  59
  60         if (e.fileName) {
  61                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  62
  63                 msg = "Exception: " + e.name + ", " + e.message +
  64                         "\nFunction: " + location + "()" +
  65                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  66
  67         } else if (e.description) {
  68                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  69         } else {
  70                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  71         }
  72
  73         debug("<b>EXCEPTION: " + msg + "</b>");
  74
  75         return msg;
  76 }
  77
  78
  79 function disableHotkeys() {
  80         hotkeys_enabled = false;
  81 }
  82
  83 function enableHotkeys() {
  84         hotkeys_enabled = true;
  85 }
  86
  87 function param_escape(arg) {
  88         if (typeof encodeURIComponent != 'undefined')
  89                 return encodeURIComponent(arg);
  90         else
  91                 return escape(arg);
  92 }
  93
  94 function param_unescape(arg) {
  95         if (typeof decodeURIComponent != 'undefined')
  96                 return decodeURIComponent(arg);
  97         else
  98                 return unescape(arg);
  99 }
 100
 101 function delay(gap) {
 102         var then,now;
 103         then=new Date().getTime();
 104         now=then;
 105         while((now-then)<gap) {
 106                 now=new Date().getTime();
 107         }
 108 }
 109
 110 var notify_hide_timerid = false;
 111
 112 function hide_notify() {
 113         var n = $("notify");
 114         if (n) {
 115                 n.style.display = "none";
 116         }
 117 }
 118
 119 function notify_silent_next() {
 120         notify_silent = true;
 121 }
 122
 123 function notify_real(msg, no_hide, n_type) {
 124
 125         if (notify_silent) {
 126                 notify_silent = false;
 127                 return;
 128         }
 129
 130         var n = $("notify");
 131         var nb = $("notify_body");
 132
 133         if (!n || !nb) return;
 134
 135         if (notify_hide_timerid) {
 136                 window.clearTimeout(notify_hide_timerid);
 137         }
 138
 139         if (msg == "") {
 140                 if (n.style.display == "block") {
 141                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 142                 }
 143                 return;
 144         } else {
 145                 n.style.display = "block";
 146         }
 147
 148         /* types:
 149
 150                 1 - generic
 151                 2 - progress
 152                 3 - error
 153                 4 - info
 154
 155         */
 156
 157         if (typeof __ != 'undefined') {
 158                 msg = __(msg);
 159         }
 160
 161         if (n_type == 1) {
 162                 n.className = "notify";
 163         } else if (n_type == 2) {
 164                 n.className = "notifyProgress";
 165                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 166         } else if (n_type == 3) {
 167                 n.className = "notifyError";
 168                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 169         } else if (n_type == 4) {
 170                 n.className = "notifyInfo";
 171                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 172         }
 173
 174 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 175
 176         nb.innerHTML = msg;
 177
 178         if (!no_hide) {
 179                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 180         }
 181 }
 182
 183 function notify(msg, no_hide) {
 184         notify_real(msg, no_hide, 1);
 185 }
 186
 187 function notify_progress(msg, no_hide) {
 188         notify_real(msg, no_hide, 2);
 189 }
 190
 191 function notify_error(msg, no_hide) {
 192         notify_real(msg, no_hide, 3);
 193
 194 }
 195
 196 function notify_info(msg, no_hide) {
 197         notify_real(msg, no_hide, 4);
 198 }
 199
 200 function printLockingError() {
 201         notify_info("Please wait until operation finishes.");
 202 }
 203
 204 function cleanSelected(element) {
 205         var content = $(element);
 206
 207         for (i = 0; i < content.rows.length; i++) {
 208                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 209         }
 210 }
 211
 212 function getVisibleUnreadHeadlines() {
 213         var content = $("headlinesList");
 214
 215         var rows = new Array();
 216
 217         if (!content) return rows;
 218
 219         for (i = 0; i < content.rows.length; i++) {
 220                 var row_id = content.rows[i].id.replace("RROW-", "");
 221                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 222                                 rows.push(row_id);
 223                 }
 224         }
 225         return rows;
 226 }
 227
 228 function getVisibleHeadlineIds() {
 229
 230         var content = $("headlinesList");
 231
 232         var rows = new Array();
 233
 234         if (!content) return rows;
 235
 236         for (i = 0; i < content.rows.length; i++) {
 237                 var row_id = content.rows[i].id.replace("RROW-", "");
 238                 if (row_id.length > 0) {
 239                                 rows.push(row_id);
 240                 }
 241         }
 242         return rows;
 243 }
 244
 245 function getFirstVisibleHeadlineId() {
 246         if (isCdmMode()) {
 247                 var rows = cdmGetVisibleArticles();
 248                 return rows[0];
 249         } else {
 250                 var rows = getVisibleHeadlineIds();
 251                 return rows[0];
 252         }
 253 }
 254
 255 function getLastVisibleHeadlineId() {
 256         if (isCdmMode()) {
 257                 var rows = cdmGetVisibleArticles();
 258                 return rows[rows.length-1];
 259         } else {
 260                 var rows = getVisibleHeadlineIds();
 261                 return rows[rows.length-1];
 262         }
 263 }
 264
 265 function markHeadline(id) {
 266         var row = $("RROW-" + id);
 267         if (row) {
 268                 var is_active = false;
 269
 270                 if (row.className.match("Active")) {
 271                         is_active = true;
 272                 }
 273                 row.className = row.className.replace("Selected", "");
 274                 row.className = row.className.replace("Active", "");
 275                 row.className = row.className.replace("Insensitive", "");
 276
 277                 if (is_active) {
 278                         row.className = row.className = "Active";
 279                 }
 280
 281                 var check = $("RCHK-" + id);
 282
 283                 if (check) {
 284                         check.checked = true;
 285                 }
 286
 287                 row.className = row.className + "Selected";
 288
 289         }
 290 }
 291
 292 function getFeedIds() {
 293         var content = $("feedsList");
 294
 295         var rows = new Array();
 296
 297         for (i = 0; i < content.rows.length; i++) {
 298                 var id = content.rows[i].id.replace("FEEDR-", "");
 299                 if (id.length > 0) {
 300                         rows.push(id);
 301                 }
 302         }
 303
 304         return rows;
 305 }
 306
 307 function setCookie(name, value, lifetime, path, domain, secure) {
 308
 309         var d = false;
 310
 311         if (lifetime) {
 312                 d = new Date();
 313                 d.setTime(d.getTime() + (lifetime * 1000));
 314         }
 315
 316         debug("setCookie: " + name + " => " + value + ": " + d);
 317
 318         int_setCookie(name, value, d, path, domain, secure);
 319
 320 }
 321
 322 function int_setCookie(name, value, expires, path, domain, secure) {
 323         document.cookie= name + "=" + escape(value) +
 324                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 325                 ((path) ? "; path=" + path : "") +
 326                 ((domain) ? "; domain=" + domain : "") +
 327                 ((secure) ? "; secure" : "");
 328 }
 329
 330 function delCookie(name, path, domain) {
 331         if (getCookie(name)) {
 332                 document.cookie = name + "=" +
 333                 ((path) ? ";path=" + path : "") +
 334                 ((domain) ? ";domain=" + domain : "" ) +
 335                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 336         }
 337 }
 338
 339
 340 function getCookie(name) {
 341
 342         var dc = document.cookie;
 343         var prefix = name + "=";
 344         var begin = dc.indexOf("; " + prefix);
 345         if (begin == -1) {
 346             begin = dc.indexOf(prefix);
 347             if (begin != 0) return null;
 348         }
 349         else {
 350             begin += 2;
 351         }
 352         var end = document.cookie.indexOf(";", begin);
 353         if (end == -1) {
 354             end = dc.length;
 355         }
 356         return unescape(dc.substring(begin + prefix.length, end));
 357 }
 358
 359 function disableContainerChildren(id, disable, doc) {
 360
 361         if (!doc) doc = document;
 362
 363         var container = $(id);
 364
 365         if (!container) {
 366                 //alert("disableContainerChildren: element " + id + " not found");
 367                 return;
 368         }
 369
 370         for (var i = 0; i < container.childNodes.length; i++) {
 371                 var child = container.childNodes[i];
 372
 373                 try {
 374                         child.disabled = disable;
 375                 } catch (E) {
 376
 377                 }
 378
 379                 if (disable) {
 380                         if (child.className && child.className.match("button")) {
 381                                 child.className = "disabledButton";
 382                         }
 383                 } else {
 384                         if (child.className && child.className.match("disabledButton")) {
 385                                 child.className = "button";
 386                         }
 387                 }
 388         }
 389
 390 }
 391
 392 function gotoPreferences() {
 393         document.location.href = "prefs.php";
 394 }
 395
 396 function gotoMain() {
 397         document.location.href = "tt-rss.php";
 398 }
 399
 400 function gotoExportOpml() {
 401         document.location.href = "opml.php?op=Export";
 402 }
 403
 404 function parse_counters(reply, scheduled_call) {
 405         try {
 406
 407                 var feeds_found = 0;
 408
 409                 var elems = reply.getElementsByTagName("counter");
 410
 411                 for (var l = 0; l < elems.length; l++) {
 412
 413                         var id = elems[l].getAttribute("id");
 414                         var t = elems[l].getAttribute("type");
 415                         var ctr = elems[l].getAttribute("counter");
 416                         var error = elems[l].getAttribute("error");
 417                         var has_img = elems[l].getAttribute("hi");
 418                         var updated = elems[l].getAttribute("updated");
 419                         var title = elems[l].getAttribute("title");
 420                         var xmsg = elems[l].getAttribute("xmsg");
 421
 422                         if (id == "global-unread") {
 423
 424                                 if (ctr > global_unread) {
 425                                         offlineDownloadStart(1);
 426                                 }
 427
 428                                 global_unread = ctr;
 429                                 updateTitle();
 430                                 continue;
 431                         }
 432
 433                         if (id == "subscribed-feeds") {
 434                                 feeds_found = ctr;
 435                                 continue;
 436                         }
 437
 438                         if (t == "category") {
 439                                 var catctr = $("FCATCTR-" + id);
 440                                 if (catctr) {
 441                                         catctr.innerHTML = "(" + ctr + ")";
 442                                         if (ctr > 0) {
 443                                                 catctr.className = "catCtrHasUnread";
 444                                         } else {
 445                                                 catctr.className = "catCtrNoUnread";
 446                                         }
 447                                 }
 448                                 continue;
 449                         }
 450
 451                         var feedctr = $("FEEDCTR-" + id);
 452                         var feedu = $("FEEDU-" + id);
 453                         var feedr = $("FEEDR-" + id);
 454                         var feed_img = $("FIMG-" + id);
 455                         var feedlink = $("FEEDL-" + id);
 456                         var feedupd = $("FLUPD-" + id);
 457
 458                         if (updated && feedlink) {
 459                                 if (error) {
 460                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 461                                 } else {
 462                                         feedlink.title = "Updated: " + updated;
 463                                 }
 464                         }
 465
 466                         if (feedupd) {
 467                                 if (!updated) updated = "";
 468
 469                                 if (error) {
 470                                         if (xmsg) {
 471                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 472                                         } else {
 473                                                 feedupd.innerHTML = updated + " (Error)";
 474                                         }
 475                                 } else {
 476                                         if (xmsg) {
 477                                                 feedupd.innerHTML = updated + " " + xmsg;
 478                                         } else {
 479                                                 feedupd.innerHTML = updated;
 480                                         }
 481                                 }
 482                         }
 483
 484                         if (has_img && feed_img) {
 485                                 if (!feed_img.src.match(id + ".ico")) {
 486                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 487                                 }
 488                         }
 489
 490                         if (feedlink && title) {
 491                                 feedlink.innerHTML = title;
 492                         }
 493
 494                         if (feedctr && feedu && feedr) {
 495
 496                                 if (parseInt(ctr) > 0 &&
 497                                                 parseInt(feedu.innerHTML) < parseInt(ctr) &&
 498                                                 id == getActiveFeedId() && scheduled_call) {
 499
 500                                         displayNewContentPrompt(id);
 501                                 }
 502
 503                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 504
 505                                 feedu.innerHTML = ctr;
 506
 507                                 if (error) {
 508                                         feedr.className = feedr.className.replace("feed", "error");
 509                                 } else if (id > 0) {
 510                                         feedr.className = feedr.className.replace("error", "feed");
 511                                 }
 512
 513                                 if (ctr > 0) {
 514                                         feedctr.className = "feedCtrHasUnread";
 515                                         if (!feedr.className.match("Unread")) {
 516                                                 var is_selected = feedr.className.match("Selected");
 517
 518                                                 feedr.className = feedr.className.replace("Selected", "");
 519                                                 feedr.className = feedr.className.replace("Unread", "");
 520
 521                                                 feedr.className = feedr.className + "Unread";
 522
 523                                                 if (is_selected) {
 524                                                         feedr.className = feedr.className + "Selected";
 525                                                 }
 526
 527                                         }
 528
 529                                         if (row_needs_hl &&
 530                                                         !getInitParam("theme_options").match('no_highlights')) {
 531                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 532                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 533
 534                                                 cache_invalidate("F:" + id);
 535                                         }
 536                                 } else {
 537                                         feedctr.className = "feedCtrNoUnread";
 538                                         feedr.className = feedr.className.replace("Unread", "");
 539                                 }
 540                         }
 541                 }
 542
 543                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 544
 545                 var feeds_stored = number_of_feeds;
 546
 547                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 548
 549                 if (feeds_stored != feeds_found) {
 550                         number_of_feeds = feeds_found;
 551
 552                         if (feeds_stored != 0 && feeds_found != 0) {
 553                                 debug("Subscribed feed number changed, refreshing feedlist");
 554                                 setTimeout('updateFeedList(false, false)', 50);
 555                         }
 556                 } else {
 557 /*                      var fl = $("feeds-frame").innerHTML;
 558                         if (fl) {
 559                                 cache_invalidate("FEEDLIST");
 560                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 561                         } */
 562                 }
 563
 564         } catch (e) {
 565                 exception_error("parse_counters", e);
 566         }
 567 }
 568
 569 function parse_counters_reply(transport, scheduled_call) {
 570
 571         if (!transport.responseXML) {
 572                 notify_error("Backend did not return valid XML", true);
 573                 return;
 574         }
 575
 576         var reply = transport.responseXML.firstChild;
 577
 578         if (!reply) {
 579                 notify_error("Backend did not return expected XML object", true);
 580                 updateTitle("");
 581                 return;
 582         }
 583
 584         if (!transport_error_check(transport)) return;
 585
 586         var counters = reply.getElementsByTagName("counters")[0];
 587
 588         parse_counters(counters, scheduled_call);
 589
 590         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 591
 592         parse_runtime_info(runtime_info);
 593
 594         if (feedsSortByUnread()) {
 595                 resort_feedlist();
 596         }
 597
 598         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 599
 600 }
 601
 602 function all_counters_callback2(transport, async_call) {
 603         try {
 604                 if (async_call) async_counters_work = true;
 605
 606                 if (offline_mode) return;
 607
 608                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 609                 parse_counters_reply(transport);
 610                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 611
 612         } catch (e) {
 613                 exception_error("all_counters_callback2", e, transport);
 614         }
 615 }
 616
 617 function get_feed_unread(id) {
 618         try {
 619                 return parseInt($("FEEDU-" + id).innerHTML);
 620         } catch (e) {
 621                 return -1;
 622         }
 623 }
 624
 625 function get_cat_unread(id) {
 626         try {
 627                 var ctr = $("FCATCTR-" + id).innerHTML;
 628                 ctr = ctr.replace("(", "");
 629                 ctr = ctr.replace(")", "");
 630                 return parseInt(ctr);
 631         } catch (e) {
 632                 return -1;
 633         }
 634 }
 635
 636 function get_feed_entry_unread(elem) {
 637
 638         var id = elem.id.replace("FEEDR-", "");
 639
 640         if (id <= 0) {
 641                 return -1;
 642         }
 643
 644         try {
 645                 return parseInt($("FEEDU-" + id).innerHTML);
 646         } catch (e) {
 647                 return -1;
 648         }
 649 }
 650
 651 function get_feed_entry_name(elem) {
 652         var id = elem.id.replace("FEEDR-", "");
 653         return getFeedName(id);
 654 }
 655
 656
 657 function resort_category(node, cat_mode) {
 658
 659         try {
 660
 661                 debug("resort_category: " + node + " CM=" + cat_mode);
 662
 663                 var by_unread = feedsSortByUnread();
 664
 665                 var list = node.getElementsByTagName("LI");
 666
 667                 for (i = 0; i < list.length; i++) {
 668
 669                         for (j = i+1; j < list.length; j++) {
 670
 671                                 var tmp_val = get_feed_entry_unread(list[i]);
 672                                 var cur_val = get_feed_entry_unread(list[j]);
 673
 674                                 var tmp_name = get_feed_entry_name(list[i]);
 675                                 var cur_name = get_feed_entry_name(list[j]);
 676
 677                                 var valid_pair = cat_mode || (list[i].id.match(/FEEDR-[0-9]/) &&
 678                                                 list[j].id.match(/FEEDR-[0-9]/));
 679
 680                                 if (valid_pair && ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name)))) {
 681                                         tempnode_i = list[i].cloneNode(true);
 682                                         tempnode_j = list[j].cloneNode(true);
 683                                         node.replaceChild(tempnode_i, list[j]);
 684                                         node.replaceChild(tempnode_j, list[i]);
 685                                 }
 686                         }
 687                 }
 688
 689         } catch (e) {
 690                 exception_error("resort_category", e);
 691         }
 692
 693 }
 694
 695 function resort_feedlist() {
 696         debug("resort_feedlist");
 697
 698         if ($("FCATLIST--1")) {
 699
 700                 var lists = document.getElementsByTagName("UL");
 701
 702                 for (var i = 0; i < lists.length; i++) {
 703                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 704                                 resort_category(lists[i], true);
 705                         }
 706                 }
 707
 708         } else {
 709                 resort_category($("feedList"), false);
 710         }
 711 }
 712
 713 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 714   * * @author Sundar Dorai-Raj
 715   * * Email: sdoraira@vt.edu
 716   * * This program is free software; you can redistribute it and/or
 717   * * modify it under the terms of the GNU General Public License
 718   * * as published by the Free Software Foundation; either version 2
 719   * * of the License, or (at your option) any later version,
 720   * * provided that any use properly credits the author.
 721   * * This program is distributed in the hope that it will be useful,
 722   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 723   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 724   * * GNU General Public License for more details at http://www.gnu.org * * */
 725
 726   var numbers=".0123456789";
 727   function isNumeric(x) {
 728     // is x a String or a character?
 729     if(x.length>1) {
 730       // remove negative sign
 731       x=Math.abs(x)+"";
 732       for(j=0;j<x.length;j++) {
 733         // call isNumeric recursively for each character
 734         number=isNumeric(x.substring(j,j+1));
 735         if(!number) return number;
 736       }
 737       return number;
 738     }
 739     else {
 740       // if x is number return true
 741       if(numbers.indexOf(x)>=0) return true;
 742       return false;
 743     }
 744   }
 745
 746
 747 function hideOrShowFeeds(hide) {
 748
 749         try {
 750
 751         debug("hideOrShowFeeds: " + hide);
 752
 753         if ($("FCATLIST--1")) {
 754
 755                 var lists = document.getElementsByTagName("UL");
 756
 757                 for (var i = 0; i < lists.length; i++) {
 758                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 759
 760                                 var id = lists[i].id.replace("FCATLIST-", "");
 761                                 hideOrShowFeedsCategory(id, hide);
 762                         }
 763                 }
 764
 765         } else {
 766                 hideOrShowFeedsCategory(null, hide);
 767         }
 768
 769         } catch (e) {
 770                 exception_error("hideOrShowFeeds", e);
 771         }
 772 }
 773
 774 function hideOrShowFeedsCategory(id, hide) {
 775
 776         try {
 777
 778                 var node = null;
 779                 var cat_node = null;
 780
 781                 if (id) {
 782                         node = $("FCATLIST-" + id);
 783                         cat_node = $("FCAT-" + id);
 784                 } else {
 785                         node = $("feedList"); // no categories
 786                 }
 787
 788         //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 789
 790                 var cat_unread = 0;
 791
 792                 if (!node) {
 793                         debug("hideOrShowFeeds: passed node is null, aborting");
 794                         return;
 795                 }
 796
 797         //      debug("cat: " + node.id);
 798
 799                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 800                         for (i = 0; i < node.childNodes.length; i++) {
 801                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 802
 803                                 if (node.childNodes[i].style != undefined) {
 804
 805                                         var has_unread = (node.childNodes[i].className != "feed" &&
 806                                                 node.childNodes[i].className != "label" &&
 807                                                 !(!getInitParam("hide_read_shows_special") &&
 808                                                         node.childNodes[i].className == "virt") &&
 809                                                 node.childNodes[i].className != "error" &&
 810                                                 node.childNodes[i].className != "tag");
 811
 812         //                              debug(node.childNodes[i].id + " --> " + has_unread);
 813
 814                                         if (hide && !has_unread) {
 815                                                 //node.childNodes[i].style.display = "none";
 816                                                 var id = node.childNodes[i].id;
 817                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 818                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 819                                         }
 820
 821                                         if (!hide) {
 822                                                 node.childNodes[i].style.display = "list-item";
 823                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 824                                         }
 825
 826                                         if (has_unread) {
 827                                                 node.childNodes[i].style.display = "list-item";
 828                                                 cat_unread++;
 829                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 830                                                 //Effect.Highlight(node.childNodes[i]);
 831                                         }
 832                                 }
 833                         }
 834                 }
 835
 836         //      debug("end cat: " + node.id + " unread " + cat_unread);
 837
 838                 if (cat_node) {
 839
 840                         if (cat_unread == 0) {
 841                                 if (cat_node.style == undefined) {
 842                                         debug("ERROR: supplied cat_node " + cat_node +
 843                                                 " has no styles. WTF?");
 844                                         return;
 845                                 }
 846                                 if (hide) {
 847                                         //cat_node.style.display = "none";
 848                                         Effect.Fade(cat_node, {duration : 0.3,
 849                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 850                                 } else {
 851                                         cat_node.style.display = "list-item";
 852                                 }
 853                         } else {
 854                                 try {
 855                                         cat_node.style.display = "list-item";
 856                                 } catch (e) {
 857                                         debug(e);
 858                                 }
 859                         }
 860                 }
 861
 862 //      debug("unread for category: " + cat_unread);
 863
 864         } catch (e) {
 865                 exception_error("hideOrShowFeedsCategory", e);
 866         }
 867 }
 868
 869 function selectTableRow(r, do_select) {
 870         r.className = r.className.replace("Selected", "");
 871
 872         if (do_select) {
 873                 r.className = r.className + "Selected";
 874         }
 875 }
 876
 877 function selectTableRowById(elem_id, check_id, do_select) {
 878
 879         try {
 880
 881                 var row = $(elem_id);
 882
 883                 if (row) {
 884                         selectTableRow(row, do_select);
 885                 }
 886
 887                 var check = $(check_id);
 888
 889                 if (check) {
 890                         check.checked = do_select;
 891                 }
 892         } catch (e) {
 893                 exception_error("selectTableRowById", e);
 894         }
 895 }
 896
 897 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 898         classcheck, reset_others) {
 899
 900         var content = $(content_id);
 901
 902         if (!content) {
 903                 alert("[selectTableRows] Element " + content_id + " not found.");
 904                 return;
 905         }
 906
 907         for (i = 0; i < content.rows.length; i++) {
 908                 if (Element.visible(content.rows[i])) {
 909                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 910
 911                                 if (content.rows[i].id.match(prefix)) {
 912                                         selectTableRow(content.rows[i], do_select);
 913
 914                                         var row_id = content.rows[i].id.replace(prefix, "");
 915                                         var check = $(check_prefix + row_id);
 916
 917                                         if (check) {
 918                                                 check.checked = do_select;
 919                                         }
 920                                 } else if (reset_others) {
 921                                         selectTableRow(content.rows[i], false);
 922
 923                                         var row_id = content.rows[i].id.replace(prefix, "");
 924                                         var check = $(check_prefix + row_id);
 925
 926                                         if (check) {
 927                                                 check.checked = false;
 928                                         }
 929
 930                                 }
 931                         } else if (reset_others) {
 932                                 selectTableRow(content.rows[i], false);
 933
 934                                 var row_id = content.rows[i].id.replace(prefix, "");
 935                                 var check = $(check_prefix + row_id);
 936
 937                                 if (check) {
 938                                         check.checked = false;
 939                                 }
 940
 941                         }
 942                 }
 943         }
 944 }
 945
 946 function getSelectedTableRowIds(content_id, prefix) {
 947
 948         var content = $(content_id);
 949
 950         if (!content) {
 951                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 952                 return;
 953         }
 954
 955         var sel_rows = new Array();
 956
 957         for (i = 0; i < content.rows.length; i++) {
 958                 if (content.rows[i].id.match(prefix) &&
 959                                 content.rows[i].className.match("Selected")) {
 960
 961                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 962                         sel_rows.push(row_id);
 963                 }
 964         }
 965
 966         return sel_rows;
 967
 968 }
 969
 970 function toggleSelectRowById(sender, id) {
 971         var row = $(id);
 972
 973         if (sender.checked) {
 974                 if (!row.className.match("Selected")) {
 975                         row.className = row.className + "Selected";
 976                 }
 977         } else {
 978                 if (row.className.match("Selected")) {
 979                         row.className = row.className.replace("Selected", "");
 980                 }
 981         }
 982 }
 983
 984 function toggleSelectListRow(sender) {
 985         var parent_row = sender.parentNode;
 986
 987         if (sender.checked) {
 988                 if (!parent_row.className.match("Selected")) {
 989                         parent_row.className = parent_row.className + "Selected";
 990                 }
 991         } else {
 992                 if (parent_row.className.match("Selected")) {
 993                         parent_row.className = parent_row.className.replace("Selected", "");
 994                 }
 995         }
 996 }
 997
 998 function tSR(sender) {
 999         return toggleSelectRow(sender);
1000 }
1001
1002 function toggleSelectRow(sender) {
1003         var parent_row = sender.parentNode.parentNode;
1004
1005         if (sender.checked) {
1006                 if (!parent_row.className.match("Selected")) {
1007                         parent_row.className = parent_row.className + "Selected";
1008                 }
1009         } else {
1010                 if (parent_row.className.match("Selected")) {
1011                         parent_row.className = parent_row.className.replace("Selected", "");
1012                 }
1013         }
1014 }
1015
1016 function getNextUnreadCat(id) {
1017         try {
1018                 var rows = $("feedList").getElementsByTagName("LI");
1019                 var feeds = new Array();
1020
1021                 var unread_only = true;
1022                 var is_cat = true;
1023
1024                 for (var i = 0; i < rows.length; i++) {
1025                         if (rows[i].id.match("FCAT-")) {
1026                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1027
1028                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1029
1030                                         if (cat_id >= 0) {
1031                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1032                                                         feeds.push(cat_id);
1033                                                 }
1034                                         }
1035                                 }
1036                         }
1037                 }
1038
1039                 var idx = feeds.indexOf(id);
1040                 if (idx != -1 && idx < feeds.length) {
1041                         return feeds[idx+1];
1042                 } else {
1043                         return feeds.shift();
1044                 }
1045
1046         } catch (e) {
1047                 exception_error("getNextUnreadCat", e);
1048         }
1049 }
1050
1051 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1052         try {
1053
1054 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1055
1056                 var rows = $("feedList").getElementsByTagName("LI");
1057                 var feeds = new Array();
1058
1059                 for (var i = 0; i < rows.length; i++) {
1060                         if (rows[i].id.match("FEEDR-")) {
1061
1062                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1063
1064                                         if (!unread_only ||
1065                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1066                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1067                                         }
1068                                 }
1069                         }
1070
1071                         if (rows[i].id.match("FCAT-")) {
1072                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1073
1074                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1075
1076                                         if (cat_id >= 0) {
1077                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1078                                                         feeds.push("CAT:"+cat_id);
1079                                                 }
1080                                         }
1081                                 }
1082                         }
1083                 }
1084
1085 //              alert(feeds.toString());
1086
1087                 if (!id) {
1088                         if (direction == "next") {
1089                                 return feeds.shift();
1090                         } else {
1091                                 return feeds.pop();
1092                         }
1093                 } else {
1094                         if (direction == "next") {
1095                                 if (is_cat) id = "CAT:" + id;
1096                                 var idx = feeds.indexOf(id);
1097                                 if (idx != -1 && idx < feeds.length) {
1098                                         return feeds[idx+1];
1099                                 } else {
1100                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1101                                 }
1102                         } else {
1103                                 if (is_cat) id = "CAT:" + id;
1104                                 var idx = feeds.indexOf(id);
1105                                 if (idx > 0) {
1106                                         return feeds[idx-1];
1107                                 } else {
1108                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1109                                 }
1110                         }
1111
1112                 }
1113
1114         } catch (e) {
1115                 exception_error("getRelativeFeedId2", e);
1116         }
1117 }
1118
1119
1120 function getRelativeFeedId(list, id, direction, unread_only) {
1121         var rows = list.getElementsByTagName("LI");
1122         var feeds = new Array();
1123
1124         for (var i = 0; i < rows.length; i++) {
1125                 if (rows[i].id.match("FEEDR-")) {
1126
1127                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1128
1129                                 if (!unread_only ||
1130                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1131                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1132                                 }
1133                         }
1134                 }
1135         }
1136
1137         if (!id) {
1138                 if (direction == "next") {
1139                         return feeds.shift();
1140                 } else {
1141                         return feeds.pop();
1142                 }
1143         } else {
1144                 if (direction == "next") {
1145                         var idx = feeds.indexOf(id);
1146                         if (idx != -1 && idx < feeds.length) {
1147                                 return feeds[idx+1];
1148                         } else {
1149                                 return getRelativeFeedId(list, false, direction, unread_only);
1150                         }
1151                 } else {
1152                         var idx = feeds.indexOf(id);
1153                         if (idx > 0) {
1154                                 return feeds[idx-1];
1155                         } else {
1156                                 return getRelativeFeedId(list, false, direction, unread_only);
1157                         }
1158                 }
1159
1160         }
1161 }
1162
1163 function showBlockElement(id, h_id) {
1164         var elem = $(id);
1165
1166         if (elem) {
1167                 elem.style.display = "block";
1168
1169                 if (h_id) {
1170                         elem = $(h_id);
1171                         if (elem) {
1172                                 elem.style.display = "none";
1173                         }
1174                 }
1175         } else {
1176                 alert("[showBlockElement] can't find element with id " + id);
1177         }
1178 }
1179
1180 function appearBlockElement_afh(effect) {
1181
1182 }
1183
1184 function checkboxToggleElement(elem, id) {
1185         if (elem.checked) {
1186                 Effect.Appear(id, {duration : 0.5});
1187         } else {
1188                 Effect.Fade(id, {duration : 0.5});
1189         }
1190 }
1191
1192 function appearBlockElement(id, h_id) {
1193
1194         try {
1195                 if (h_id) {
1196                         Effect.Fade(h_id);
1197                 }
1198                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1199         } catch (e) {
1200                 exception_error("appearBlockElement", e);
1201         }
1202
1203 }
1204
1205 function hideParentElement(e) {
1206         e.parentNode.style.display = "none";
1207 }
1208
1209 function dropboxSelect(e, v) {
1210         for (i = 0; i < e.length; i++) {
1211                 if (e[i].value == v) {
1212                         e.selectedIndex = i;
1213                         break;
1214                 }
1215         }
1216 }
1217
1218 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1219 // bugfixed just a little bit :-)
1220 function getURLParam(strParamName){
1221   var strReturn = "";
1222   var strHref = window.location.href;
1223
1224   if (strHref.indexOf("#") == strHref.length-1) {
1225                 strHref = strHref.substring(0, strHref.length-1);
1226   }
1227
1228   if ( strHref.indexOf("?") > -1 ){
1229     var strQueryString = strHref.substr(strHref.indexOf("?"));
1230     var aQueryString = strQueryString.split("&");
1231     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1232       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1233         var aParam = aQueryString[iParam].split("=");
1234         strReturn = aParam[1];
1235         break;
1236       }
1237     }
1238   }
1239   return strReturn;
1240 }
1241
1242 function leading_zero(p) {
1243         var s = String(p);
1244         if (s.length == 1) s = "0" + s;
1245         return s;
1246 }
1247
1248 function closeErrorBox() {
1249
1250         if (Element.visible("errorBoxShadow")) {
1251                 Element.hide("dialog_overlay");
1252                 Element.hide("errorBoxShadow");
1253
1254                 enableHotkeys();
1255         }
1256
1257         return false;
1258 }
1259
1260 function closeInfoBox(cleanup) {
1261
1262         try {
1263                 enableHotkeys();
1264
1265                 if (Element.visible("infoBoxShadow")) {
1266                         Element.hide("dialog_overlay");
1267                         Element.hide("infoBoxShadow");
1268
1269                         if (cleanup) $("infoBoxShadow").innerHTML = "&nbsp;";
1270                 }
1271         } catch (e) {
1272                 exception_error("closeInfoBox", e);
1273         }
1274
1275         return false;
1276 }
1277
1278
1279 function displayDlg(id, param, callback) {
1280
1281         notify_progress("Loading, please wait...", true);
1282
1283         disableHotkeys();
1284
1285         var query = "?op=dlg&id=" +
1286                 param_escape(id) + "&param=" + param_escape(param);
1287
1288         new Ajax.Request("backend.php", {
1289                 parameters: query,
1290                 onComplete: function (transport) {
1291                         infobox_callback2(transport);
1292                         if (callback) callback(transport);
1293                 } });
1294
1295         return false;
1296 }
1297
1298 function infobox_submit_callback2(transport) {
1299         closeInfoBox();
1300
1301         try {
1302                 // called from prefs, reload tab
1303                 if (typeof active_tab != 'undefined' && active_tab) {
1304                         selectTab(active_tab, false);
1305                 }
1306         } catch (e) { }
1307
1308         if (transport.responseText) {
1309                 notify_info(transport.responseText);
1310         }
1311 }
1312
1313 function infobox_callback2(transport) {
1314         try {
1315
1316                 debug("infobox_callback2");
1317
1318                 var box = $('infoBox');
1319
1320                 if (box) {
1321
1322                         if (!getInitParam("infobox_disable_overlay")) {
1323                                 Element.show("dialog_overlay");
1324                         }
1325
1326                         box.innerHTML=transport.responseText;
1327                         Element.show("infoBoxShadow");
1328                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1329
1330
1331                 }
1332
1333                 disableHotkeys();
1334
1335                 notify("");
1336         } catch (e) {
1337                 exception_error("infobox_callback2", e);
1338         }
1339 }
1340
1341 function createFilter() {
1342
1343         try {
1344
1345                 var form = document.forms['filter_add_form'];
1346                 var reg_exp = form.reg_exp.value;
1347
1348                 if (reg_exp == "") {
1349                         alert(__("Can't add filter: nothing to match on."));
1350                         return false;
1351                 }
1352
1353                 var query = Form.serialize("filter_add_form");
1354
1355                 // we can be called from some other tab in Prefs
1356                 if (typeof active_tab != 'undefined' && active_tab) {
1357                         active_tab = "filterConfig";
1358                 }
1359
1360                 new Ajax.Request("backend.php?" + query, {
1361                         onComplete: function (transport) {
1362                                 infobox_submit_callback2(transport);
1363                         } });
1364
1365                 return true;
1366
1367         } catch (e) {
1368                 exception_error("createFilter", e);
1369         }
1370 }
1371
1372 function isValidURL(s) {
1373         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1374 }
1375
1376 function subscribeToFeed() {
1377
1378         try {
1379
1380         var form = document.forms['feed_add_form'];
1381         var feed_url = form.feed_url.value;
1382
1383         if (feed_url == "") {
1384                 alert(__("Can't subscribe: no feed URL given."));
1385                 return false;
1386         }
1387
1388         notify_progress(__("Subscribing to feed..."), true);
1389
1390         var query = Form.serialize("feed_add_form");
1391
1392         debug("subscribe q: " + query);
1393
1394         Form.disable("feed_add_form");
1395
1396         new Ajax.Request("backend.php", {
1397                 parameters: query,
1398                 onComplete: function(transport) {
1399                         //dlg_frefresh_callback(transport);
1400
1401                         notify('');
1402
1403                         var result = transport.responseXML.getElementsByTagName('result')[0];
1404                         var rc = parseInt(result.getAttribute('code'));
1405
1406                         Form.enable("feed_add_form");
1407
1408                         switch (rc) {
1409                         case 1:
1410                                 closeInfoBox();
1411                                 notify_info(__("Subscribed to %s").replace("%s", feed_url));
1412
1413                                 if (inPreferences()) {
1414                                         updateFeedList();
1415                                 } else {
1416                                         setTimeout('updateFeedList(false, false)', 50);
1417                                 }
1418                                 break;
1419                         case 2:
1420                                 alert(__("Can't subscribe to the specified URL."));
1421                                 break;
1422                         case 0:
1423                                 alert(__("You are already subscribed to this feed."));
1424                                 break;
1425                         }
1426
1427                 } });
1428
1429         } catch (e) {
1430                 exception_error("subscribeToFeed", e);
1431         }
1432
1433         return false;
1434 }
1435
1436 function filterCR(e, f)
1437 {
1438      var key;
1439
1440      if(window.event)
1441           key = window.event.keyCode;     //IE
1442      else
1443           key = e.which;     //firefox
1444
1445         if (key == 13) {
1446                 if (typeof f != 'undefined') {
1447                         f();
1448                         return false;
1449                 } else {
1450                         return false;
1451                 }
1452         } else {
1453                 return true;
1454         }
1455 }
1456
1457 var debug_last_class = "even";
1458
1459 function debug(msg) {
1460
1461         if (debug_last_class == "even") {
1462                 debug_last_class = "odd";
1463         } else {
1464                 debug_last_class = "even";
1465         }
1466
1467         var c = $('debug_output');
1468         if (c && Element.visible(c)) {
1469                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1470                         c.removeChild(c.lastChild);
1471                 }
1472
1473                 var d = new Date();
1474                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1475                         ":" + leading_zero(d.getSeconds());
1476                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1477                         msg + "</li>" + c.innerHTML;
1478         }
1479 }
1480
1481 function getInitParam(key) {
1482         return init_params[key];
1483 }
1484
1485 function setInitParam(key, value) {
1486         init_params[key] = value;
1487 }
1488
1489 function fatalError(code, msg, ext_info) {
1490         try {
1491
1492                 if (!ext_info) ext_info = "N/A";
1493
1494                 if (code == 6) {
1495                         window.location.href = "tt-rss.php";
1496                 } else if (code == 5) {
1497                         window.location.href = "update.php";
1498                 } else {
1499
1500                         if (msg == "") msg = "Unknown error";
1501
1502                         var ebc = $("xebContent");
1503
1504                         if (ebc) {
1505
1506                                 Element.show("dialog_overlay");
1507                                 Element.show("errorBoxShadow");
1508                                 Element.hide("xebBtn");
1509
1510                                 if (ext_info) {
1511                                         if (ext_info.responseText) {
1512                                                 ext_info = ext_info.responseText;
1513                                         }
1514                                 }
1515
1516                                 ebc.innerHTML =
1517                                         "<div><b>Error message:</b></div>" +
1518                                         "<pre>" + msg + "</pre>" +
1519                                         "<div><b>Additional information:</b></div>" +
1520                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1521                         }
1522                 }
1523
1524         } catch (e) {
1525                 exception_error("fatalError", e);
1526         }
1527 }
1528
1529 function getFeedName(id, is_cat) {
1530         var e;
1531
1532         if (is_cat) {
1533                 e = $("FCATN-" + id);
1534         } else {
1535                 e = $("FEEDN-" + id);
1536         }
1537         if (e) {
1538                 return e.innerHTML.stripTags();
1539         } else {
1540                 return null;
1541         }
1542 }
1543
1544 function filterDlgCheckType(sender) {
1545
1546         try {
1547
1548                 var ftype = sender[sender.selectedIndex].value;
1549
1550                 var form = document.forms["filter_add_form"];
1551
1552                 if (!form) {
1553                         form = document.forms["filter_edit_form"];
1554                 }
1555
1556                 if (!form) {
1557                         debug("filterDlgCheckType: can't find form!");
1558                         return;
1559                 }
1560
1561                 // if selected filter type is 5 (Date) enable the modifier dropbox
1562                 if (ftype == 5) {
1563                         Element.show("filter_dlg_date_mod_box");
1564                         Element.show("filter_dlg_date_chk_box");
1565                 } else {
1566                         Element.hide("filter_dlg_date_mod_box");
1567                         Element.hide("filter_dlg_date_chk_box");
1568
1569                 }
1570
1571         } catch (e) {
1572                 exception_error("filterDlgCheckType", e);
1573         }
1574
1575 }
1576
1577 function filterDlgCheckAction(sender) {
1578
1579         try {
1580
1581                 var action = sender[sender.selectedIndex].value;
1582
1583                 var form = document.forms["filter_add_form"];
1584
1585                 if (!form) {
1586                         form = document.forms["filter_edit_form"];
1587                 }
1588
1589                 if (!form) {
1590                         debug("filterDlgCheckAction: can't find form!");
1591                         return;
1592                 }
1593
1594                 var action_param = $("filter_dlg_param_box");
1595
1596                 if (!action_param) {
1597                         debug("filterDlgCheckAction: can't find action param box!");
1598                         return;
1599                 }
1600
1601                 // if selected action supports parameters, enable params field
1602                 if (action == 4 || action == 6 || action == 7) {
1603                         Element.show(action_param);
1604                         if (action != 7) {
1605                                 Element.show(form.action_param);
1606                                 Element.hide(form.action_param_label);
1607                         } else {
1608                                 Element.show(form.action_param_label);
1609                                 Element.hide(form.action_param);
1610                         }
1611                 } else {
1612                         Element.hide(action_param);
1613                 }
1614
1615         } catch (e) {
1616                 exception_error("filterDlgCheckAction", e);
1617         }
1618
1619 }
1620
1621 function filterDlgCheckDate() {
1622         try {
1623                 var form = document.forms["filter_add_form"];
1624
1625                 if (!form) {
1626                         form = document.forms["filter_edit_form"];
1627                 }
1628
1629                 if (!form) {
1630                         debug("filterDlgCheckAction: can't find form!");
1631                         return;
1632                 }
1633
1634                 var reg_exp = form.reg_exp.value;
1635
1636                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
1637
1638                 new Ajax.Request("backend.php", {
1639                         parameters: query,
1640                         onComplete: function(transport) {
1641
1642                                 var form = document.forms["filter_add_form"];
1643
1644                                 if (!form) {
1645                                         form = document.forms["filter_edit_form"];
1646                                 }
1647
1648                                 if (transport.responseXML) {
1649                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1650
1651                                         if (result && result.firstChild) {
1652                                                 if (result.firstChild.nodeValue == "1") {
1653
1654                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1655
1656                                                         return;
1657                                                 }
1658                                         }
1659                                 }
1660
1661                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1662
1663                         } });
1664
1665
1666         } catch (e) {
1667                 exception_error("filterDlgCheckDate", e);
1668         }
1669 }
1670
1671 function explainError(code) {
1672         return displayDlg("explainError", code);
1673 }
1674
1675 // this only searches loaded headlines list, not in CDM
1676 function getRelativePostIds(id, limit) {
1677
1678         if (!limit) limit = 3;
1679
1680         debug("getRelativePostIds: " + id + " limit=" + limit);
1681
1682         var ids = new Array();
1683         var container = $("headlinesList");
1684
1685         if (container) {
1686                 var rows = container.rows;
1687
1688                 for (var i = 0; i < rows.length; i++) {
1689                         var r_id = rows[i].id.replace("RROW-", "");
1690
1691                         if (r_id == id) {
1692                                 for (var k = 1; k <= limit; k++) {
1693                                         var nid = false;
1694
1695                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1696                                         if (nid) ids.push(nid);
1697
1698                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1699                                         if (nid) ids.push(nid);
1700                                 }
1701
1702                                 return ids;
1703                         }
1704                 }
1705         }
1706
1707         return false;
1708 }
1709
1710 function openArticleInNewWindow(id) {
1711         try {
1712                 debug("openArticleInNewWindow: " + id);
1713
1714                 var query = "?op=rpc&subop=getArticleLink&id=" + id;
1715                 var wname = "ttrss_article_" + id;
1716
1717                 debug(query + " " + wname);
1718
1719                 var w = window.open("", wname);
1720
1721                 if (!w) notify_error("Failed to open window for the article");
1722
1723                 new Ajax.Request("backend.php", {
1724                         parameters: query,
1725                         onComplete: function(transport) {
1726
1727                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1728                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1729
1730                                         debug("open_article received link: " + link);
1731
1732                                         if (link && id) {
1733
1734                                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
1735
1736                                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
1737
1738                                                 var w = window.open(link.firstChild.nodeValue, wname);
1739
1740                                                 if (!w) { notify_error("Failed to load article in new window"); }
1741
1742                                                 if (id) {
1743                                                         id = id.firstChild.nodeValue;
1744                                                         if (!$("headlinesList")) {
1745                                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
1746                                                         }
1747                                                 }
1748                                         } else {
1749                                                 notify_error("Can't open article: received invalid article link");
1750                                         }
1751                                 } });
1752
1753         } catch (e) {
1754                 exception_error("openArticleInNewWindow", e);
1755         }
1756 }
1757
1758 /* http://textsnippets.com/posts/show/835 */
1759
1760 Position.GetWindowSize = function(w) {
1761         w = w ? w : window;
1762         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1763         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1764         return [width, height]
1765 }
1766
1767 /* http://textsnippets.com/posts/show/836 */
1768
1769 Position.Center = function(element, parent) {
1770         var w, h, pw, ph;
1771         var d = Element.getDimensions(element);
1772         w = d.width;
1773         h = d.height;
1774         Position.prepare();
1775         if (!parent) {
1776                 var ws = Position.GetWindowSize();
1777                 pw = ws[0];
1778                 ph = ws[1];
1779         } else {
1780                 pw = parent.offsetWidth;
1781                 ph = parent.offsetHeight;
1782         }
1783         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1784         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1785 }
1786
1787
1788 function isCdmMode() {
1789         return !$("headlinesList");
1790 }
1791
1792 function getSelectedArticleIds2() {
1793         var rows = new Array();
1794         var cdm_mode = isCdmMode();
1795
1796         if (cdm_mode) {
1797                 rows = cdmGetSelectedArticles();
1798         } else {
1799                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1800         }
1801
1802         var ids = new Array();
1803
1804         for (var i = 0; i < rows.length; i++) {
1805                 var chk = $("RCHK-" + rows[i]);
1806                 if (chk && chk.checked) {
1807                         ids.push(rows[i]);
1808                 }
1809         }
1810
1811         return ids;
1812 }
1813
1814 function displayHelpInfobox(topic_id) {
1815
1816         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1817
1818         var w = window.open(url, "ttrss_help",
1819                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1820
1821 }
1822
1823 function focus_element(id) {
1824         try {
1825                 var e = $(id);
1826                 if (e) e.focus();
1827         } catch (e) {
1828                 exception_error("focus_element", e);
1829         }
1830         return false;
1831 }
1832
1833 function loading_set_progress(p) {
1834         try {
1835                 if (p < last_progress_point || !Element.visible("overlay")) return;
1836
1837                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1838
1839                 var o = $("l_progress_i");
1840
1841 //              o.style.width = (p * 2) + "px";
1842
1843                 new Effect.Scale(o, p, {
1844                         scaleY : false,
1845                         scaleFrom : last_progress_point,
1846                         scaleMode: { originalWidth : 200 },
1847                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1848
1849                 last_progress_point = p;
1850
1851         } catch (e) {
1852                 exception_error("loading_set_progress", e);
1853         }
1854 }
1855
1856 function remove_splash() {
1857         if (Element.visible("overlay")) {
1858                 debug("about to remove splash, OMG!");
1859                 Element.hide("overlay");
1860                 debug("removed splash!");
1861         }
1862 }
1863
1864 function addLabelExample() {
1865         try {
1866                 var form = document.forms["label_edit_form"];
1867
1868                 var text = form.sql_exp;
1869                 var op = form.label_fields[form.label_fields.selectedIndex];
1870                 var p = form.label_fields_param;
1871
1872                 if (op) {
1873                         op = op.value;
1874
1875                         var tmp = "";
1876
1877                         if (text.value != "") {
1878                                 if (text.value.substring(text.value.length-3, 3).toUpperCase() != "AND") {
1879                                         tmp = " AND ";
1880                                 } else {
1881                                         tmp = " ";
1882                                 }
1883                         }
1884
1885                         if (op == "unread") {
1886                                 tmp = tmp + "unread = true";
1887                         }
1888
1889                         if (op == "updated") {
1890                                 tmp = tmp + "last_read is null and unread = false";
1891                         }
1892
1893                         if (op == "kw_title") {
1894                                 if (p.value == "") {
1895                                         alert("This action requires a parameter.");
1896                                         return false;
1897                                 }
1898                                 tmp = tmp + "ttrss_entries.title like '%"+p.value+"%'";
1899                         }
1900
1901                         if (op == "kw_content") {
1902                                 if (p.value == "") {
1903                                         alert("This action requires a parameter.");
1904                                         return false;
1905                                 }
1906
1907                                 tmp = tmp + "ttrss_entries.content like '%"+p.value+"%'";
1908                         }
1909
1910                         if (op == "scoreE") {
1911                                 if (isNaN(parseInt(p.value))) {
1912                                         alert("This action expects numeric parameter.");
1913                                         return false;
1914                                 }
1915                                 tmp = tmp + "score = " + p.value;
1916                         }
1917
1918                         if (op == "scoreG") {
1919                                 if (isNaN(parseInt(p.value))) {
1920                                         alert("This action expects numeric parameter.");
1921                                         return false;
1922                                 }
1923                                 tmp = tmp + "score > " + p.value;
1924                         }
1925
1926                         if (op == "scoreL") {
1927                                 if (isNaN(parseInt(p.value))) {
1928                                         alert("This action expects numeric parameter.");
1929                                         return false;
1930                                 }
1931                                 tmp = tmp + "score < " + p.value;
1932                         }
1933
1934                         if (op == "newerD") {
1935                                 if (isNaN(parseInt(p.value))) {
1936                                         alert("This action expects numeric parameter.");
1937                                         return false;
1938                                 }
1939                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" days'";
1940                         }
1941
1942                         if (op == "newerH") {
1943                                 if (isNaN(parseInt(p.value))) {
1944                                         alert("This action expects numeric parameter.");
1945                                         return false;
1946                                 }
1947
1948                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" hours'";
1949                         }
1950
1951                         text.value = text.value + tmp;
1952
1953                         p.value = "";
1954
1955                 }
1956
1957         } catch (e) {
1958                 exception_error("addLabelExample", e);
1959         }
1960
1961         return false;
1962 }
1963
1964 function labelFieldsCheck(elem) {
1965         try {
1966                 var op = elem[elem.selectedIndex].value;
1967
1968                 var p = document.forms["label_edit_form"].label_fields_param;
1969
1970                 if (op == "kw_title" || op == "kw_content" || op == "scoreL" ||
1971                                 op == "scoreG" ||       op == "scoreE" || op == "newerD" ||
1972                                 op == "newerH" ) {
1973                         Element.show(p);
1974                 } else {
1975                         Element.hide(p);
1976                 }
1977
1978         } catch (e) {
1979                 exception_error("labelFieldsCheck", e);
1980
1981         }
1982 }
1983
1984 function getSelectedFeedsFromBrowser() {
1985
1986         var list = $("browseFeedList");
1987         if (!list) list = $("browseBigFeedList");
1988
1989         var selected = new Array();
1990
1991         for (i = 0; i < list.childNodes.length; i++) {
1992                 var child = list.childNodes[i];
1993                 if (child.id && child.id.match("FBROW-")) {
1994                         var id = child.id.replace("FBROW-", "");
1995
1996                         var cb = $("FBCHK-" + id);
1997
1998                         if (cb.checked) {
1999                                 selected.push(id);
2000                         }
2001                 }
2002         }
2003
2004         return selected;
2005 }
2006
2007 function updateFeedBrowser() {
2008         try {
2009
2010                 var query = Form.serialize("feed_browser");
2011
2012                 Element.show('feed_browser_spinner');
2013
2014                 new Ajax.Request("backend.php", {
2015                         parameters: query,
2016                         onComplete: function(transport) {
2017                                 notify('');
2018
2019                                 Element.hide('feed_browser_spinner');
2020
2021                                 var c = $("browseFeedList");
2022                                 var r = transport.responseXML.getElementsByTagName("content")[0];
2023                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
2024                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
2025
2026                                 if (c && r) {
2027                                         c.innerHTML = r.firstChild.nodeValue;
2028                                 }
2029
2030                                 if (parseInt(mode.getAttribute("value")) == 2) {
2031                                         Element.show('feed_archive_remove');
2032                                 } else {
2033                                         Element.hide('feed_archive_remove');
2034                                 }
2035
2036                         } });
2037
2038         } catch (e) {
2039                 exception_error("updateFeedBrowser", e);
2040         }
2041
2042 }
2043
2044 function browseFeeds(limit) {
2045
2046         try {
2047
2048 /*              var query = "?op=ialog&subop=browse";
2049
2050                 notify_progress("Loading, please wait...", true);
2051
2052                 new Ajax.Request("backend.php", {
2053                         parameters: query,
2054                         onComplete: function(transport) {
2055                                 infobox_callback2(transport);
2056                         } }); */
2057
2058                 displayDlg('feedBrowser');
2059
2060                 return false;
2061         } catch (e) {
2062                 exception_error("browseFeeds", e);
2063         }
2064 }
2065
2066 function transport_error_check(transport) {
2067         try {
2068                 if (transport.responseXML) {
2069                         var error = transport.responseXML.getElementsByTagName("error")[0];
2070
2071                         if (error) {
2072                                 var code = error.getAttribute("error-code");
2073                                 var msg = error.getAttribute("error-msg");
2074                                 if (code != 0) {
2075                                         fatalError(code, msg);
2076                                         return false;
2077                                 }
2078                         }
2079                 }
2080         } catch (e) {
2081                 exception_error("check_for_error_xml", e);
2082         }
2083         return true;
2084 }
2085
2086 function strip_tags(s) {
2087         return s.replace(/<\/?[^>]+(>|$)/g, "");
2088 }
2089
2090 function truncate_string(s, length) {
2091         if (!length) length = 30;
2092         var tmp = s.substring(0, length);
2093         if (s.length > length) tmp += "&hellip;";
2094         return tmp;
2095 }
2096
2097 /*
2098 function switchToFlash(e) {
2099         try {
2100                 var targ = e;
2101                 if (!e) var e = window.event;
2102                 if (e.target) targ = e.target;
2103                 else if (e.srcElement) targ = e.srcElement;
2104                 if (targ.nodeType == 3) // defeat Safari bug
2105                         targ = targ.parentNode;
2106
2107                 //targ is the link that was clicked
2108                 var audioTag=targ;
2109                 do {
2110                         audioTag=audioTag.previousSibling;
2111                 } while(audioTag && audioTag.nodeType != 1)
2112
2113                 var flashPlayer = audioTag.getElementsByTagName('span')[0];
2114                 targ.parentNode.insertBefore(flashPlayer,targ);
2115                 targ.parentNode.removeChild(targ);
2116                 audioTag.parentNode.removeChild(audioTag);
2117
2118                 return false;
2119         } catch (e) {
2120                 exception_error("switchToFlash", e);
2121         }
2122 }
2123
2124 function html5AudioOrFlash(type) {
2125         var audioTag = document.createElement('audio');
2126         if(! audioTag.canPlayType || audioTag.canPlayType(type) == "no" ||
2127                         audioTag.canPlayType(type) == ""){
2128                 if($('switchToFlashLink')){
2129                         switchToFlash($('switchToFlashLink'));
2130                 }
2131         }
2132 } */
2133
2134 function hotkey_prefix_timeout() {
2135         try {
2136
2137                 var date = new Date();
2138                 var ts = Math.round(date.getTime() / 1000);
2139
2140                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
2141                         debug("hotkey_prefix seems to be stuck, aborting");
2142                         hotkey_prefix_pressed = false;
2143                         hotkey_prefix = false;
2144                         Element.hide('cmdline');
2145                 }
2146
2147                 setTimeout("hotkey_prefix_timeout()", 1000);
2148
2149         } catch  (e) {
2150                 exception_error("hotkey_prefix_timeout", e);
2151         }
2152 }
2153
2154 function hideAuxDlg() {
2155         try {
2156                 Element.hide('auxDlg');
2157         } catch (e) {
2158                 exception_error("hideAuxDlg", e);
2159         }
2160 }
2161
2162 function displayNewContentPrompt(id) {
2163         try {
2164
2165                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
2166                         __("New articles available in this feed (click to show)") + "</a>";
2167
2168                 msg = msg.replace("%s", getFeedName(id));
2169
2170                 $('auxDlg').innerHTML = msg;
2171
2172                 Element.show('auxDlg');
2173
2174         } catch (e) {
2175                 exception_error("displayNewContentPrompt", e);
2176         }
2177 }
2178
2179 function feedBrowserSubscribe() {
2180         try {
2181
2182                 var selected = getSelectedFeedsFromBrowser();
2183
2184                 var mode = document.forms['feed_browser'].mode;
2185
2186                 mode = mode[mode.selectedIndex].value;
2187
2188                 if (selected.length > 0) {
2189                         closeInfoBox();
2190
2191                         notify_progress("Loading, please wait...", true);
2192
2193                         var query = "?op=rpc&subop=massSubscribe&ids="+
2194                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
2195
2196                         new Ajax.Request("backend.php", {
2197                                 parameters: query,
2198                                 onComplete: function(transport) {
2199
2200                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
2201                                         var nf_value = nf.getAttribute("value");
2202
2203                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
2204
2205                                         if (inPreferences()) {
2206                                                 updateFeedList();
2207                                         } else {
2208                                                 setTimeout('updateFeedList(false, false)', 50);
2209                                         }
2210                                 } });
2211
2212                 } else {
2213                         alert(__("No feeds are selected."));
2214                 }
2215
2216         } catch (e) {
2217                 exception_error("feedBrowserSubscribe", e);
2218         }
2219 }
2220
2221 function feedArchiveRemove() {
2222         try {
2223
2224                 var selected = getSelectedFeedsFromBrowser();
2225
2226                 if (selected.length > 0) {
2227
2228                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
2229
2230                         if (confirm(pr)) {
2231                                 Element.show('feed_browser_spinner');
2232
2233                                 var query = "?op=rpc&subop=remarchived&ids=" +
2234                                         param_escape(selected.toString());;
2235
2236                                 new Ajax.Request("backend.php", {
2237                                         parameters: query,
2238                                         onComplete: function(transport) {
2239                                                 updateFeedBrowser();
2240                                         } });
2241                         }
2242
2243                 } else {
2244                         alert(__("No feeds are selected."));
2245                 }
2246
2247         } catch (e) {
2248                 exception_error("feedArchiveRemove", e);
2249         }
2250 }
2251
2252 function uploadIconHandler(rc) {
2253         try {
2254                 switch (rc) {
2255                         case 0:
2256                                 notify_info("Upload complete.");
2257                                 if (inPreferences()) {
2258                                         updateFeedList();
2259                                 } else {
2260                                         setTimeout('updateFeedList(false, false)', 50);
2261                                 }
2262                                 break;
2263                         case 1:
2264                                 notify_error("Upload failed: icon is too big.");
2265                                 break;
2266                         case 2:
2267                                 notify_error("Upload failed.");
2268                                 break;
2269                 }
2270
2271         } catch (e) {
2272                 exception_error("uploadIconHandler", e);
2273         }
2274 }
2275
2276 function removeFeedIcon(id) {
2277
2278         try {
2279
2280                 if (confirm(__("Remove stored feed icon?"))) {
2281                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
2282
2283                         debug(query);
2284
2285                         notify_progress("Removing feed icon...", true);
2286
2287                         new Ajax.Request("backend.php", {
2288                                 parameters: query,
2289                                 onComplete: function(transport) {
2290                                         notify_info("Feed icon removed.");
2291                                         if (inPreferences()) {
2292                                                 updateFeedList();
2293                                         } else {
2294                                                 setTimeout('updateFeedList(false, false)', 50);
2295                                         }
2296                                 } });
2297                 }
2298
2299                 return false;
2300         } catch (e) {
2301                 exception_error("uploadFeedIcon", e);
2302         }
2303 }
2304
2305 function uploadFeedIcon() {
2306
2307         try {
2308
2309                 var file = $("icon_file");
2310
2311                 if (file.value.length == 0) {
2312                         alert(__("Please select an image file to upload."));
2313                 } else {
2314                         if (confirm(__("Upload new icon for this feed?"))) {
2315                                 notify_progress("Uploading, please wait...", true);
2316                                 return true;
2317                         }
2318                 }
2319
2320                 return false;
2321
2322         } catch (e) {
2323                 exception_error("uploadFeedIcon", e);
2324         }
2325 }
2326