functions.js

   1 var hotkeys_enabled = true;
   2
   3 var xmlhttp_rpc = Ajax.getTransport();
   4
   5 function browser_has_opacity() {
   6         return navigator.userAgent.match("Gecko") != null ||
   7                 navigator.userAgent.match("Opera") != null;
   8 }
   9
  10 function is_opera() {
  11         return navigator.userAgent.match("Opera");
  12 }
  13
  14 function exception_error(location, e, silent) {
  15         var msg;
  16
  17         if (e.fileName) {
  18                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  19
  20                 msg = "Exception: " + e.name + ", " + e.message +
  21                         "\nFunction: " + location + "()" +
  22                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  23
  24         } else {
  25                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  26         }
  27
  28         debug("<b>EXCEPTION: " + msg + "</b>");
  29
  30         if (!silent) {
  31                 alert(msg);
  32         }
  33 }
  34
  35 function disableHotkeys() {
  36         hotkeys_enabled = false;
  37 }
  38
  39 function enableHotkeys() {
  40         hotkeys_enabled = true;
  41 }
  42
  43 function xmlhttp_ready(obj) {
  44         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  45 }
  46
  47 function notify_callback() {
  48         var container = document.getElementById('notify');
  49         if (xmlhttp.readyState == 4) {
  50                 container.innerHTML=xmlhttp.responseText;
  51         }
  52 }
  53
  54 function rpc_notify_callback() {
  55         var container = document.getElementById('notify');
  56         if (xmlhttp_rpc.readyState == 4) {
  57                 container.innerHTML=xmlhttp_rpc.responseText;
  58         }
  59 }
  60
  61 function param_escape(arg) {
  62         if (typeof encodeURIComponent != 'undefined')
  63                 return encodeURIComponent(arg);
  64         else
  65                 return escape(arg);
  66 }
  67
  68 function param_unescape(arg) {
  69         if (typeof decodeURIComponent != 'undefined')
  70                 return decodeURIComponent(arg);
  71         else
  72                 return unescape(arg);
  73 }
  74
  75 function delay(gap) {
  76         var then,now;
  77         then=new Date().getTime();
  78         now=then;
  79         while((now-then)<gap) {
  80                 now=new Date().getTime();
  81         }
  82 }
  83
  84 var notify_hide_timerid = false;
  85 var notify_last_doc = false;
  86
  87 var notify_effect = false;
  88
  89 function hide_notify() {
  90         if (notify_last_doc) {
  91                 var n = notify_last_doc.getElementById("notify");
  92                 n.style.display = "none";
  93
  94 /*              if (browser_has_opacity()) {
  95                         if (notify_opacity >= 0) {
  96                                 notify_opacity = notify_opacity - 0.1;
  97                                 n.style.opacity = notify_opacity;
  98                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  99                         } else {
 100                                 n.style.display = "none";
 101                                 n.style.opacity = 1;
 102                         }
 103                 } else {
 104                         n.style.display = "none";
 105                 } */
 106         }
 107 }
 108
 109 function notify_real(msg, doc, no_hide, is_err) {
 110
 111         var n = doc.getElementById("notify");
 112         var nb = doc.getElementById("notify_body");
 113
 114         if (!n || !nb) return;
 115
 116         if (notify_hide_timerid) {
 117                 window.clearTimeout(notify_hide_timerid);
 118         }
 119
 120         notify_last_doc = doc;
 121         notify_opacity = 1;
 122
 123         if (msg == "") {
 124                 if (n.style.display == "block") {
 125                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 126                 }
 127                 return;
 128         } else {
 129                 n.style.display = "block";
 130         }
 131
 132         if (is_err) {
 133                 n.style.backgroundColor = "#ffcccc";
 134                 n.style.color = "black";
 135                 n.style.borderColor = "#ff0000";
 136         } else {
 137                 n.style.backgroundColor = "#fff7d5";
 138                 n.style.borderColor = "#d7c47a";
 139                 n.style.color = "black";
 140         }
 141
 142 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 143
 144         nb.innerHTML = msg;
 145
 146         if (!no_hide) {
 147                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 148         }
 149 }
 150
 151 function p_notify(msg, no_hide, is_err) {
 152         notify_real(msg, document, no_hide, is_err);
 153 }
 154
 155 function notify(msg, no_hide, is_err) {
 156         notify_real(msg, document, no_hide, is_err);
 157 }
 158
 159 function printLockingError() {
 160         notify("Please wait until operation finishes");}
 161
 162 function hotkey_handler(e) {
 163
 164         try {
 165
 166                 var keycode;
 167
 168                 if (!hotkeys_enabled) return;
 169
 170                 if (window.event) {
 171                         keycode = window.event.keyCode;
 172                 } else if (e) {
 173                         keycode = e.which;
 174                 }
 175
 176                 if (keycode == 82) { // r
 177                         return scheduleFeedUpdate(true);
 178                 }
 179
 180                 if (keycode == 83) { // r
 181                         return displayDlg("search", getActiveFeedId());
 182                 }
 183
 184                 if (keycode == 85) { // u
 185                         if (getActiveFeedId()) {
 186                                 return viewfeed(getActiveFeedId(), "ForceUpdate");
 187                         }
 188                 }
 189
 190                 if (keycode == 65) { // a
 191                         return toggleDispRead();
 192                 }
 193
 194                 var feedlist = document.getElementById('feedList');
 195
 196                 if (keycode == 74) { // j
 197                         var feed = getActiveFeedId();
 198                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 199                         if (new_feed) viewfeed(new_feed, '');
 200                 }
 201
 202                 if (keycode == 75) { // k
 203                         var feed = getActiveFeedId();
 204                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 205                         if (new_feed) viewfeed(new_feed, '');
 206                 }
 207
 208                 if (keycode == 78 || keycode == 40) { // n, down
 209                         if (typeof moveToPost != 'undefined') {
 210                                 return moveToPost('next');
 211                         }
 212                 }
 213
 214                 if (keycode == 80 || keycode == 38) { // p, up
 215                         if (typeof moveToPost != 'undefined') {
 216                                 return moveToPost('prev');
 217                         }
 218                 }
 219
 220                 if (typeof localHotkeyHandler != 'undefined') {
 221                         try {
 222                                 localHotkeyHandler(keycode);
 223                         } catch (e) {
 224                                 exception_error("hotkey_handler, local:", e);
 225                         }
 226                 }
 227         } catch (e) {
 228                 exception_error("hotkey_handler", e);
 229         }
 230 }
 231
 232 function cleanSelectedList(element) {
 233         var content = document.getElementById(element);
 234
 235         if (!document.getElementById("feedCatHolder")) {
 236                 for (i = 0; i < content.childNodes.length; i++) {
 237                         var child = content.childNodes[i];
 238                         try {
 239                                 child.className = child.className.replace("Selected", "");
 240                         } catch (e) {
 241                                 //
 242                         }
 243                 }
 244         } else {
 245                 for (i = 0; i < content.childNodes.length; i++) {
 246                         var child = content.childNodes[i];
 247                         if (child.id == "feedCatHolder") {
 248                                 debug(child.id);
 249                                 var fcat = child.lastChild;
 250                                 for (j = 0; j < fcat.childNodes.length; j++) {
 251                                         var feed = fcat.childNodes[j];
 252                                         feed.className = feed.className.replace("Selected", "");
 253                                 }
 254                         }
 255                 }
 256         }
 257 }
 258
 259
 260 function cleanSelected(element) {
 261         var content = document.getElementById(element);
 262
 263         for (i = 0; i < content.rows.length; i++) {
 264                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 265         }
 266 }
 267
 268 function getVisibleUnreadHeadlines() {
 269         var content = document.getElementById("headlinesList");
 270
 271         var rows = new Array();
 272
 273         for (i = 0; i < content.rows.length; i++) {
 274                 var row_id = content.rows[i].id.replace("RROW-", "");
 275                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 276                                 rows.push(row_id);
 277                 }
 278         }
 279         return rows;
 280 }
 281
 282 function getVisibleHeadlineIds() {
 283
 284         var content = document.getElementById("headlinesList");
 285
 286         var rows = new Array();
 287
 288         for (i = 0; i < content.rows.length; i++) {
 289                 var row_id = content.rows[i].id.replace("RROW-", "");
 290                 if (row_id.length > 0) {
 291                                 rows.push(row_id);
 292                 }
 293         }
 294         return rows;
 295 }
 296
 297 function getFirstVisibleHeadlineId() {
 298         var rows = getVisibleHeadlineIds();
 299         return rows[0];
 300 }
 301
 302 function getLastVisibleHeadlineId() {
 303         var rows = getVisibleHeadlineIds();
 304         return rows[rows.length-1];
 305 }
 306
 307 function markHeadline(id) {
 308         var row = document.getElementById("RROW-" + id);
 309         if (row) {
 310                 var is_active = false;
 311
 312                 if (row.className.match("Active")) {
 313                         is_active = true;
 314                 }
 315                 row.className = row.className.replace("Selected", "");
 316                 row.className = row.className.replace("Active", "");
 317                 row.className = row.className.replace("Insensitive", "");
 318
 319                 if (is_active) {
 320                         row.className = row.className = "Active";
 321                 }
 322
 323                 var check = document.getElementById("RCHK-" + id);
 324
 325                 if (check) {
 326                         check.checked = true;
 327                 }
 328
 329                 row.className = row.className + "Selected";
 330
 331         }
 332 }
 333
 334 function getFeedIds() {
 335         var content = document.getElementById("feedsList");
 336
 337         var rows = new Array();
 338
 339         for (i = 0; i < content.rows.length; i++) {
 340                 var id = content.rows[i].id.replace("FEEDR-", "");
 341                 if (id.length > 0) {
 342                         rows.push(id);
 343                 }
 344         }
 345
 346         return rows;
 347 }
 348
 349 function setCookie(name, value, lifetime, path, domain, secure) {
 350
 351         var d = false;
 352
 353         if (lifetime) {
 354                 d = new Date();
 355                 d.setTime(lifetime * 1000);
 356         }
 357
 358         int_setCookie(name, value, d, path, domain, secure);
 359
 360 }
 361
 362 function int_setCookie(name, value, expires, path, domain, secure) {
 363         document.cookie= name + "=" + escape(value) +
 364                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 365                 ((path) ? "; path=" + path : "") +
 366                 ((domain) ? "; domain=" + domain : "") +
 367                 ((secure) ? "; secure" : "");
 368 }
 369
 370 function delCookie(name, path, domain) {
 371         if (getCookie(name)) {
 372                 document.cookie = name + "=" +
 373                 ((path) ? ";path=" + path : "") +
 374                 ((domain) ? ";domain=" + domain : "" ) +
 375                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 376         }
 377 }
 378
 379
 380 function getCookie(name) {
 381
 382         var dc = document.cookie;
 383         var prefix = name + "=";
 384         var begin = dc.indexOf("; " + prefix);
 385         if (begin == -1) {
 386             begin = dc.indexOf(prefix);
 387             if (begin != 0) return null;
 388         }
 389         else {
 390             begin += 2;
 391         }
 392         var end = document.cookie.indexOf(";", begin);
 393         if (end == -1) {
 394             end = dc.length;
 395         }
 396         return unescape(dc.substring(begin + prefix.length, end));
 397 }
 398
 399 function disableContainerChildren(id, disable, doc) {
 400
 401         if (!doc) doc = document;
 402
 403         var container = doc.getElementById(id);
 404
 405         if (!container) {
 406                 //alert("disableContainerChildren: element " + id + " not found");
 407                 return;
 408         }
 409
 410         for (var i = 0; i < container.childNodes.length; i++) {
 411                 var child = container.childNodes[i];
 412
 413                 try {
 414                         child.disabled = disable;
 415                 } catch (E) {
 416
 417                 }
 418
 419                 if (disable) {
 420                         if (child.className && child.className.match("button")) {
 421                                 child.className = "disabledButton";
 422                         }
 423                 } else {
 424                         if (child.className && child.className.match("disabledButton")) {
 425                                 child.className = "button";
 426                         }
 427                 }
 428         }
 429
 430 }
 431
 432 function gotoPreferences() {
 433         document.location.href = "prefs.php";
 434 }
 435
 436 function gotoMain() {
 437         document.location.href = "tt-rss.php";
 438 }
 439
 440 function gotoExportOpml() {
 441         document.location.href = "opml.php?op=Export";
 442 }
 443
 444 function getActiveFeedId() {
 445 //      return getCookie("ttrss_vf_actfeed");
 446         try {
 447                 debug("gAFID: " + active_feed_id);
 448                 return active_feed_id;
 449         } catch (e) {
 450                 exception_error("getActiveFeedId", e);
 451         }
 452 }
 453
 454 function activeFeedIsCat() {
 455         return active_feed_is_cat;
 456 }
 457
 458 function setActiveFeedId(id) {
 459 //      return setCookie("ttrss_vf_actfeed", id);
 460         try {
 461                 debug("sAFID(" + id + ")");
 462                 active_feed_id = id;
 463         } catch (e) {
 464                 exception_error("setActiveFeedId", e);
 465         }
 466 }
 467
 468 function parse_counters(reply, scheduled_call) {
 469         try {
 470
 471                 var feeds_found = 0;
 472
 473                 if (reply.firstChild && reply.firstChild.firstChild) {
 474                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 475                         reply = reply.firstChild;
 476                 }
 477
 478                 for (var l = 0; l < reply.childNodes.length; l++) {
 479                         if (!reply.childNodes[l] ||
 480                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 481                                 // where did this come from?
 482                                 continue;
 483                         }
 484
 485                         var id = reply.childNodes[l].getAttribute("id");
 486                         var t = reply.childNodes[l].getAttribute("type");
 487                         var ctr = reply.childNodes[l].getAttribute("counter");
 488                         var error = reply.childNodes[l].getAttribute("error");
 489                         var has_img = reply.childNodes[l].getAttribute("hi");
 490                         var updated = reply.childNodes[l].getAttribute("updated");
 491
 492                         if (id == "global-unread") {
 493                                 global_unread = ctr;
 494                                 updateTitle();
 495                                 continue;
 496                         }
 497
 498                         if (id == "subscribed-feeds") {
 499                                 feeds_found = ctr;
 500                                 continue;
 501                         }
 502
 503                         if (t == "category") {
 504                                 var catctr = document.getElementById("FCATCTR-" + id);
 505                                 if (catctr) {
 506                                         catctr.innerHTML = "(" + ctr + " unread)";
 507                                 }
 508                                 continue;
 509                         }
 510
 511                         var feedctr = document.getElementById("FEEDCTR-" + id);
 512                         var feedu = document.getElementById("FEEDU-" + id);
 513                         var feedr = document.getElementById("FEEDR-" + id);
 514                         var feed_img = document.getElementById("FIMG-" + id);
 515                         var feedlink = document.getElementById("FEEDL-" + id);
 516                         var feedupd = document.getElementById("FLUPD-" + id);
 517
 518                         if (updated && feedlink) {
 519                                 if (error) {
 520                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 521                                 } else {
 522                                         feedlink.title = "Updated: " + updated;
 523                                 }
 524                         }
 525
 526                         if (updated && feedupd) {
 527                                 if (error) {
 528                                         feedupd.innerHTML = updated + " (Error)";
 529                                 } else {
 530                                         feedupd.innerHTML = updated;
 531                                 }
 532                         }
 533
 534                         if (feedctr && feedu && feedr) {
 535
 536                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 537                                         viewCurrentFeed();
 538                                 }
 539
 540                                 feedu.innerHTML = ctr;
 541
 542                                 if (error) {
 543                                         feedr.className = feedr.className.replace("feed", "error");
 544                                 } else if (id > 0) {
 545                                         feedr.className = feedr.className.replace("error", "feed");
 546                                 }
 547
 548                                 if (ctr > 0) {
 549                                         feedctr.className = "odd";
 550                                         if (!feedr.className.match("Unread")) {
 551                                                 var is_selected = feedr.className.match("Selected");
 552
 553                                                 feedr.className = feedr.className.replace("Selected", "");
 554                                                 feedr.className = feedr.className.replace("Unread", "");
 555
 556                                                 feedr.className = feedr.className + "Unread";
 557
 558                                                 if (is_selected) {
 559                                                         feedr.className = feedr.className + "Selected";
 560                                                 }
 561
 562                                         }
 563                                 } else {
 564                                         feedctr.className = "invisible";
 565                                         feedr.className = feedr.className.replace("Unread", "");
 566                                 }
 567                         }
 568                 }
 569
 570                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 571
 572                 var feeds_stored = number_of_feeds;
 573
 574                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 575
 576                 if (feeds_stored != feeds_found) {
 577                         number_of_feeds = feeds_found;
 578
 579                         if (feeds_stored != 0) {
 580                                 debug("Subscribed feed number changed, refreshing feedlist");
 581                                 setTimeout('updateFeedList(false, false)', 50);
 582                         }
 583                 }
 584
 585         } catch (e) {
 586                 exception_error("parse_counters", e);
 587         }
 588 }
 589
 590 function all_counters_callback() {
 591         if (xmlhttp_rpc.readyState == 4) {
 592                 try {
 593                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 594                                 debug("[all_counters_callback] backend did not return valid XML");
 595                                 return;
 596                         }
 597
 598                         debug("in all_counters_callback : " + xmlhttp_rpc.responseXML);
 599
 600                         var reply = xmlhttp_rpc.responseXML.firstChild;
 601
 602                         var counters = reply.firstChild;
 603
 604                         parse_counters(counters);
 605
 606                         var runtime = counters.nextSibling;
 607
 608                         if (runtime) {
 609                                 parse_runtime_info(runtime);
 610                         }
 611
 612                         if (getInitParam("feeds_sort_by_unread") == 1) {
 613                                 resort_feedlist();
 614                         }
 615
 616                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 617
 618                 } catch (e) {
 619                         exception_error("all_counters_callback", e);
 620                 }
 621         }
 622 }
 623
 624 function get_feed_entry_unread(doc, elem) {
 625
 626         var id = elem.id.replace("FEEDR-", "");
 627
 628         if (id <= 0) {
 629                 return -1;
 630         }
 631
 632         try {
 633                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 634         } catch (e) {
 635                 return -1;
 636         }
 637 }
 638
 639 function resort_category(doc, node) {
 640         debug("resort_category: " + node);
 641
 642         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 643                 for (i = 0; i < node.childNodes.length; i++) {
 644                         if (node.childNodes[i].nodeName != "LI") { continue; }
 645
 646                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 647                                 continue;
 648                         }
 649
 650                         for (j = i+1; j < node.childNodes.length; j++) {
 651                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 652
 653                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 654                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 655
 656                                 if (cur_val > tmp_val) {
 657                                         tempnode_i = node.childNodes[i].cloneNode(true);
 658                                         tempnode_j = node.childNodes[j].cloneNode(true);
 659                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 660                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 661                                 }
 662                         }
 663
 664                 }
 665         }
 666
 667 }
 668
 669 function resort_feedlist() {
 670         debug("resort_feedlist");
 671
 672         var fd = document;
 673
 674         if (fd.getElementById("feedCatHolder")) {
 675
 676                 var feeds = fd.getElementById("feedList");
 677                 var child = feeds.firstChild;
 678
 679                 while (child) {
 680
 681                         if (child.id == "feedCatHolder") {
 682                                 resort_category(fd, child.firstChild);
 683                         }
 684
 685                         child = child.nextSibling;
 686                 }
 687
 688         } else {
 689                 resort_category(fd, fd.getElementById("feedList"));
 690         }
 691 }
 692
 693 function update_all_counters(feed) {
 694         if (xmlhttp_ready(xmlhttp_rpc)) {
 695                 var query = "backend.php?op=rpc&subop=getAllCounters";
 696
 697                 if (feed > 0) {
 698                         query = query + "&aid=" + feed;
 699                 }
 700
 701                 xmlhttp_rpc.open("GET", query, true);
 702                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 703                 xmlhttp_rpc.send(null);
 704         }
 705 }
 706
 707 function popupHelp(tid) {
 708         var w = window.open("backend.php?op=help&tid=" + tid,
 709                 "Popup Help",
 710                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 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(doc, hide) {
 748
 749         debug("hideOrShowFeeds: " + doc + ", " + hide);
 750
 751         var fd = document;
 752
 753         var list = fd.getElementById("feedList");
 754
 755         if (fd.getElementById("feedCatHolder")) {
 756
 757                 var feeds = fd.getElementById("feedList");
 758                 var child = feeds.firstChild;
 759
 760                 while (child) {
 761
 762                         if (child.id == "feedCatHolder") {
 763                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 764                         }
 765
 766                         child = child.nextSibling;
 767                 }
 768
 769         } else {
 770                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 771         }
 772 }
 773
 774 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 775
 776 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 777
 778         var cat_unread = 0;
 779
 780         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 781                 for (i = 0; i < node.childNodes.length; i++) {
 782                         if (node.childNodes[i].nodeName != "LI") { continue; }
 783
 784                         if (node.childNodes[i].style != undefined) {
 785
 786                                 var has_unread = (node.childNodes[i].className != "feed");
 787
 788         //                      debug(node.childNodes[i].id + " --> " + has_unread);
 789
 790                                 if (hide && !has_unread) {
 791                                         node.childNodes[i].style.display = "none";
 792                                 }
 793
 794                                 if (!hide) {
 795                                         node.childNodes[i].style.display = "list-item";
 796                                 }
 797
 798                                 if (has_unread) {
 799                                         node.childNodes[i].style.display = "list-item";
 800                                         cat_unread++;
 801                                 }
 802                         }
 803                 }
 804         }
 805
 806         if (cat_unread == 0) {
 807                 if (cat_node.style == undefined) {
 808                         debug("ERROR: supplied cat_node " + cat_node +
 809                                 " has no styles. WTF?");
 810                         return;
 811                 }
 812                 if (hide) {
 813                         cat_node.style.display = "none";
 814                 } else {
 815                         cat_node.style.display = "list-item";
 816                 }
 817         } else {
 818                 try {
 819                         cat_node.style.display = "list-item";
 820                 } catch (e) {
 821                         debug(e);
 822                 }
 823         }
 824
 825 //      debug("unread for category: " + cat_unread);
 826 }
 827
 828 function selectTableRow(r, do_select) {
 829         r.className = r.className.replace("Selected", "");
 830
 831         if (do_select) {
 832                 r.className = r.className + "Selected";
 833         }
 834 }
 835
 836 function selectTableRowById(elem_id, check_id, do_select) {
 837
 838         try {
 839
 840                 var row = document.getElementById(elem_id);
 841
 842                 if (row) {
 843                         selectTableRow(row, do_select);
 844                 }
 845
 846                 var check = document.getElementById(check_id);
 847
 848                 if (check) {
 849                         check.checked = do_select;
 850                 }
 851         } catch (e) {
 852                 exception_error("selectTableRowById", e);
 853         }
 854 }
 855
 856 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 857         classcheck, reset_others) {
 858
 859         var content = document.getElementById(content_id);
 860
 861         if (!content) {
 862                 alert("[selectTableRows] Element " + content_id + " not found.");
 863                 return;
 864         }
 865
 866         for (i = 0; i < content.rows.length; i++) {
 867                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 868
 869                         if (content.rows[i].id.match(prefix)) {
 870                                 selectTableRow(content.rows[i], do_select);
 871
 872                                 var row_id = content.rows[i].id.replace(prefix, "");
 873                                 var check = document.getElementById(check_prefix + row_id);
 874
 875                                 if (check) {
 876                                         check.checked = do_select;
 877                                 }
 878                         } else if (reset_others) {
 879                                 selectTableRow(content.rows[i], false);
 880
 881                                 var row_id = content.rows[i].id.replace(prefix, "");
 882                                 var check = document.getElementById(check_prefix + row_id);
 883
 884                                 if (check) {
 885                                         check.checked = false;
 886                                 }
 887
 888                         }
 889                 } else if (reset_others) {
 890                         selectTableRow(content.rows[i], false);
 891
 892                         var row_id = content.rows[i].id.replace(prefix, "");
 893                         var check = document.getElementById(check_prefix + row_id);
 894
 895                         if (check) {
 896                                 check.checked = false;
 897                         }
 898
 899                 }
 900         }
 901 }
 902
 903 function getSelectedTableRowIds(content_id, prefix) {
 904
 905         var content = document.getElementById(content_id);
 906
 907         if (!content) {
 908                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 909                 return;
 910         }
 911
 912         var sel_rows = new Array();
 913
 914         for (i = 0; i < content.rows.length; i++) {
 915                 if (content.rows[i].id.match(prefix) &&
 916                                 content.rows[i].className.match("Selected")) {
 917
 918                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 919                         sel_rows.push(row_id);
 920                 }
 921         }
 922
 923         return sel_rows;
 924
 925 }
 926
 927 function toggleSelectRowById(sender, id) {
 928         var row = document.getElementById(id);
 929
 930         if (sender.checked) {
 931                 if (!row.className.match("Selected")) {
 932                         row.className = row.className + "Selected";
 933                 }
 934         } else {
 935                 if (row.className.match("Selected")) {
 936                         row.className = row.className.replace("Selected", "");
 937                 }
 938         }
 939 }
 940
 941 function toggleSelectListRow(sender) {
 942         var parent_row = sender.parentNode;
 943
 944         if (sender.checked) {
 945                 if (!parent_row.className.match("Selected")) {
 946                         parent_row.className = parent_row.className + "Selected";
 947                 }
 948         } else {
 949                 if (parent_row.className.match("Selected")) {
 950                         parent_row.className = parent_row.className.replace("Selected", "");
 951                 }
 952         }
 953 }
 954
 955
 956 function toggleSelectRow(sender) {
 957         var parent_row = sender.parentNode.parentNode;
 958
 959         if (sender.checked) {
 960                 if (!parent_row.className.match("Selected")) {
 961                         parent_row.className = parent_row.className + "Selected";
 962                 }
 963         } else {
 964                 if (parent_row.className.match("Selected")) {
 965                         parent_row.className = parent_row.className.replace("Selected", "");
 966                 }
 967         }
 968 }
 969
 970 function openExternalUrl(url) {
 971         var w = window.open(url);
 972 }
 973
 974 function getRelativeFeedId(list, id, direction, unread_only) {
 975         if (!id) {
 976                 if (direction == "next") {
 977                         for (i = 0; i < list.childNodes.length; i++) {
 978                                 var child = list.childNodes[i];
 979                                 if (child.id && child.id == "feedCatHolder") {
 980                                         if (child.lastChild) {
 981                                                 var cr = getRelativeFeedId(child.firstChild, id, direction, unread_only);
 982                                                 if (cr) return cr;
 983                                         }
 984                                 } else if (child.id && child.id.match("FEEDR-")) {
 985                                         return child.id.replace('FEEDR-', '');
 986                                 }
 987                         }
 988                 }
 989
 990                 // FIXME select last feed doesn't work when only unread feeds are visible
 991
 992                 if (direction == "prev") {
 993                         for (i = list.childNodes.length-1; i >= 0; i--) {
 994                                 var child = list.childNodes[i];
 995                                 if (child.id == "feedCatHolder") {
 996                                         if (child.firstChild) {
 997                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 998                                                 if (cr) return cr;
 999                                         }
1000                                 } else if (child.id.match("FEEDR-")) {
1001
1002                                         if (getInitParam("hide_read_feeds") == 1) {
1003                                                 if (child.className != "feed") {
1004                                                         alert(child.className);
1005                                                         return child.id.replace('FEEDR-', '');
1006                                                 }
1007                                         } else {
1008                                                         return child.id.replace('FEEDR-', '');
1009                                         }
1010                                 }
1011                         }
1012                 }
1013         } else {
1014
1015                 var feed = list.ownerDocument.getElementById("FEEDR-" + id);
1016
1017                 if (getInitParam("hide_read_feeds") == 1) {
1018                         unread_only = true;
1019                 }
1020
1021                 if (direction == "next") {
1022
1023                         var e = feed;
1024
1025                         while (e) {
1026
1027                                 if (e.nextSibling) {
1028
1029                                         e = e.nextSibling;
1030
1031                                 } else if (e.parentNode.parentNode.nextSibling) {
1032
1033                                         var this_cat = e.parentNode.parentNode;
1034
1035                                         e = false;
1036
1037                                         if (this_cat && this_cat.nextSibling) {
1038                                                 while (!e && this_cat.nextSibling) {
1039                                                         this_cat = this_cat.nextSibling;
1040                                                         if (this_cat.id == "feedCatHolder") {
1041                                                                 e = this_cat.firstChild.firstChild;
1042                                                         }
1043                                                 }
1044                                         }
1045
1046                                 } else {
1047                                         e = false;
1048                            }
1049
1050                                 if (e) {
1051                                         if (!unread_only || (unread_only && e.className != "feed" &&
1052                                                         e.className.match("feed")))     {
1053                                                 return e.id.replace("FEEDR-", "");
1054                                         }
1055                                 }
1056                         }
1057
1058                 } else if (direction == "prev") {
1059
1060                         var e = feed;
1061
1062                         while (e) {
1063
1064                                 if (e.previousSibling) {
1065
1066                                         e = e.previousSibling;
1067
1068                                 } else if (e.parentNode.parentNode.previousSibling) {
1069
1070                                         var this_cat = e.parentNode.parentNode;
1071
1072                                         e = false;
1073
1074                                         if (this_cat && this_cat.previousSibling) {
1075                                                 while (!e && this_cat.previousSibling) {
1076                                                         this_cat = this_cat.previousSibling;
1077                                                         if (this_cat.id == "feedCatHolder") {
1078                                                                 e = this_cat.firstChild.lastChild;
1079                                                         }
1080                                                 }
1081                                         }
1082
1083                                 } else {
1084                                         e = false;
1085                            }
1086
1087                                 if (e) {
1088                                         if (!unread_only || (unread_only && e.className != "feed" &&
1089                                                         e.className.match("feed")))     {
1090                                                 return e.id.replace("FEEDR-", "");
1091                                         }
1092                                 }
1093                         }
1094                 }
1095         }
1096 }
1097
1098 function showBlockElement(id) {
1099         var elem = document.getElementById(id);
1100
1101         if (elem) {
1102                 elem.style.display = "block";
1103         } else {
1104                 alert("[showBlockElement] can't find element with id " + id);
1105         }
1106 }
1107
1108 function hideParentElement(e) {
1109         e.parentNode.style.display = "none";
1110 }
1111
1112 function dropboxSelect(e, v) {
1113         for (i = 0; i < e.length; i++) {
1114                 if (e[i].value == v) {
1115                         e.selectedIndex = i;
1116                         break;
1117                 }
1118         }
1119 }
1120
1121 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1122 // bugfixed just a little bit :-)
1123 function getURLParam(strParamName){
1124   var strReturn = "";
1125   var strHref = window.location.href;
1126
1127   if (strHref.indexOf("#") == strHref.length-1) {
1128                 strHref = strHref.substring(0, strHref.length-1);
1129   }
1130
1131   if ( strHref.indexOf("?") > -1 ){
1132     var strQueryString = strHref.substr(strHref.indexOf("?"));
1133     var aQueryString = strQueryString.split("&");
1134     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1135       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1136         var aParam = aQueryString[iParam].split("=");
1137         strReturn = aParam[1];
1138         break;
1139       }
1140     }
1141   }
1142   return strReturn;
1143 }
1144
1145 function leading_zero(p) {
1146         var s = String(p);
1147         if (s.length == 1) s = "0" + s;
1148         return s;
1149 }
1150
1151 function closeInfoBox(cleanup) {
1152         var box = document.getElementById('infoBox');
1153         var shadow = document.getElementById('infoBoxShadow');
1154
1155         if (shadow) {
1156                 shadow.style.display = "none";
1157         } else if (box) {
1158                 box.style.display = "none";
1159         }
1160
1161         if (cleanup) box.innerHTML = "&nbsp;";
1162
1163         enableHotkeys();
1164
1165         return false;
1166 }
1167
1168
1169 function displayDlg(id, param) {
1170
1171         if (!xmlhttp_ready(xmlhttp)) {
1172                 printLockingError();
1173                 return
1174         }
1175
1176         notify("");
1177
1178         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1179                 param_escape(id) + "&param=" + param_escape(param), true);
1180         xmlhttp.onreadystatechange=infobox_callback;
1181         xmlhttp.send(null);
1182
1183         disableHotkeys();
1184
1185         return false;
1186 }
1187
1188 function infobox_submit_callback() {
1189         if (xmlhttp.readyState == 4) {
1190                 closeInfoBox();
1191
1192                 try {
1193                         // called from prefs, reload tab
1194                         if (active_tab) {
1195                                 selectTab(active_tab, false);
1196                         }
1197                 } catch (e) { }
1198
1199                 notify(xmlhttp.responseText);
1200
1201         }
1202 }
1203
1204 function infobox_callback() {
1205         if (xmlhttp.readyState == 4) {
1206                 var box = document.getElementById('infoBox');
1207                 var shadow = document.getElementById('infoBoxShadow');
1208                 if (box) {
1209                         box.innerHTML=xmlhttp.responseText;
1210                         if (shadow) {
1211                                 shadow.style.display = "block";
1212                         } else {
1213                                 box.style.display = "block";
1214                         }
1215                 }
1216         }
1217 }
1218
1219 function qaddFilter() {
1220
1221         if (!xmlhttp_ready(xmlhttp)) {
1222                 printLockingError();
1223                 return
1224         }
1225
1226         var query = Form.serialize("filter_add_form");
1227
1228         xmlhttp.open("GET", "backend.php?" + query, true);
1229         xmlhttp.onreadystatechange=infobox_submit_callback;
1230         xmlhttp.send(null);
1231
1232         return true;
1233 }
1234
1235 function toggleSubmitNotEmpty(e, submit_id) {
1236         try {
1237                 document.getElementById(submit_id).disabled = (e.value == "")
1238         } catch (e) {
1239                 exception_error("toggleSubmitNotEmpty", e);
1240         }
1241 }
1242
1243 function isValidURL(s) {
1244         return s.match("http://") != null || s.match("https://") != null;
1245 }
1246
1247 function qafAdd() {
1248
1249         if (!xmlhttp_ready(xmlhttp)) {
1250                 printLockingError();
1251                 return
1252         }
1253
1254         notify("Adding feed...", true);
1255
1256         closeInfoBox();
1257
1258         var feeds_doc = document;
1259
1260 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1261
1262         var query = Form.serialize("feed_add_form");
1263
1264         xmlhttp.open("GET", "backend.php?" + query, true);
1265         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1266         xmlhttp.send(null);
1267
1268         return false;
1269 }
1270
1271 function filterCR(e, f)
1272 {
1273      var key;
1274
1275      if(window.event)
1276           key = window.event.keyCode;     //IE
1277      else
1278           key = e.which;     //firefox
1279
1280         if (key == 13) {
1281                 if (typeof f != 'undefined') {
1282                         f();
1283                         return false;
1284                 } else {
1285                         return false;
1286                 }
1287         } else {
1288                 return true;
1289         }
1290 }
1291
1292 function getMainContext() {
1293         return this.window;
1294 }
1295
1296 function getFeedsContext() {
1297         return this.window;
1298 }
1299
1300 function getContentContext() {
1301         return this.window;
1302 }
1303
1304 function getHeadlinesContext() {
1305         return this.window;
1306 }
1307
1308 var debug_last_class = "even";
1309
1310 function debug(msg) {
1311
1312         if (debug_last_class == "even") {
1313                 debug_last_class = "odd";
1314         } else {
1315                 debug_last_class = "even";
1316         }
1317
1318         var c = document.getElementById('debug_output');
1319         if (c && c.style.display == "block") {
1320                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1321                         c.removeChild(c.lastChild);
1322                 }
1323
1324                 var d = new Date();
1325                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1326                         ":" + leading_zero(d.getSeconds());
1327                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1328                         msg + "</li>" + c.innerHTML;
1329         }
1330 }
1331
1332 function getInitParam(key) {
1333         return getMainContext().init_params[key];
1334 }
1335
1336 function storeInitParam(key, value, is_client) {
1337         try {
1338                 if (!is_client) {
1339                         if (getMainContext().init_params[key] != value) {
1340                                 debug("storeInitParam: " + key + " => " + value);
1341                                 //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1342                                 //      param_escape(key) + "&value=" + param_escape(value));
1343                                 var f = getMainContext().document.getElementById("backReqBox");
1344                                 f.src = "backend.php?op=rpc&subop=storeParam&key=" +
1345                                         param_escape(key) + "&value=" + param_escape(value);
1346                         }
1347                 }
1348                 getMainContext().init_params[key] = value;
1349         } catch (e) {
1350                 exception_error("storeInitParam", e);
1351         }
1352 }
1353
1354 /*
1355 function storeInitParams(params, is_client) {
1356         try {
1357                 var s = "";
1358
1359                 for (k in params) {
1360                         if (getMainContext().init_params[k] != params[k]) {
1361                                 s += k + "=" + params[k] + ";";
1362                                 getMainContext().init_params[k] = params[k];
1363                         }
1364                 }
1365
1366                 debug("storeInitParams: " + s);
1367
1368                 if (!is_client) {
1369                         new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
1370                 }
1371         } catch (e) {
1372                 exception_error("storeInitParams", e);
1373         }
1374 }*/
1375
1376 function fatalError(code, message) {
1377         try {
1378                 var fe = document.getElementById("fatal_error");
1379                 var fc = document.getElementById("fatal_error_msg");
1380
1381                 fc.innerHTML = "Code " + code + ": " + message;
1382
1383                 fe.style.display = "block";
1384
1385         } catch (e) {
1386                 exception_error("fatalError", e);
1387         }
1388 }
1389
1390 function getFeedName(id, is_cat) {
1391         var d = getFeedsContext().document;
1392
1393         var e;
1394
1395         if (is_cat) {
1396                 e = d.getElementById("FCATN-" + id);
1397         } else {
1398                 e = d.getElementById("FEEDN-" + id);
1399         }
1400         if (e) {
1401                 return e.innerHTML.stripTags();
1402         } else {
1403                 return null;
1404         }
1405 }
1406
1407 function viewContentUrl(url) {
1408         getContentContext().location = url;
1409 }