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.className = "notifyError";
 134 //              n.style.backgroundColor = "#ffcccc";
 135 //              n.style.color = "black";
 136 //              n.style.borderColor = "#ff0000";
 137         } else {
 138                 n.className = "notify";
 139 //              n.style.backgroundColor = "#fff7d5";
 140 //              n.style.borderColor = "#d7c47a";
 141 //              n.style.color = "black";
 142         }
 143
 144 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 145
 146         nb.innerHTML = msg;
 147
 148         if (!no_hide) {
 149                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 150         }
 151 }
 152
 153 function p_notify(msg, no_hide, is_err) {
 154         notify_real(msg, document, no_hide, is_err);
 155 }
 156
 157 function notify(msg, no_hide, is_err) {
 158         notify_real(msg, document, no_hide, is_err);
 159 }
 160
 161 function printLockingError() {
 162         notify("Please wait until operation finishes");}
 163
 164 function hotkey_handler(e) {
 165
 166         try {
 167
 168                 var keycode;
 169
 170                 if (!hotkeys_enabled) return;
 171
 172                 if (window.event) {
 173                         keycode = window.event.keyCode;
 174                 } else if (e) {
 175                         keycode = e.which;
 176                 }
 177
 178                 if (keycode == 82) { // r
 179                         return scheduleFeedUpdate(true);
 180                 }
 181
 182                 if (keycode == 83) { // r
 183                         return displayDlg("search", getActiveFeedId());
 184                 }
 185
 186                 if (keycode == 85) { // u
 187                         if (getActiveFeedId()) {
 188                                 return viewfeed(getActiveFeedId(), "ForceUpdate");
 189                         }
 190                 }
 191
 192                 if (keycode == 65) { // a
 193                         return toggleDispRead();
 194                 }
 195
 196                 var feedlist = document.getElementById('feedList');
 197
 198                 if (keycode == 74) { // j
 199                         var feed = getActiveFeedId();
 200                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 201                         if (new_feed) viewfeed(new_feed, '');
 202                 }
 203
 204                 if (keycode == 75) { // k
 205                         var feed = getActiveFeedId();
 206                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 207                         if (new_feed) viewfeed(new_feed, '');
 208                 }
 209
 210                 if (keycode == 78 || keycode == 40) { // n, down
 211                         if (typeof moveToPost != 'undefined') {
 212                                 return moveToPost('next');
 213                         }
 214                 }
 215
 216                 if (keycode == 80 || keycode == 38) { // p, up
 217                         if (typeof moveToPost != 'undefined') {
 218                                 return moveToPost('prev');
 219                         }
 220                 }
 221
 222                 if (typeof localHotkeyHandler != 'undefined') {
 223                         try {
 224                                 localHotkeyHandler(keycode);
 225                         } catch (e) {
 226                                 exception_error("hotkey_handler, local:", e);
 227                         }
 228                 }
 229         } catch (e) {
 230                 exception_error("hotkey_handler", e);
 231         }
 232 }
 233
 234 function cleanSelectedList(element) {
 235         var content = document.getElementById(element);
 236
 237         if (!document.getElementById("feedCatHolder")) {
 238                 for (i = 0; i < content.childNodes.length; i++) {
 239                         var child = content.childNodes[i];
 240                         try {
 241                                 child.className = child.className.replace("Selected", "");
 242                         } catch (e) {
 243                                 //
 244                         }
 245                 }
 246         } else {
 247                 for (i = 0; i < content.childNodes.length; i++) {
 248                         var child = content.childNodes[i];
 249                         if (child.id == "feedCatHolder") {
 250                                 debug(child.id);
 251                                 var fcat = child.lastChild;
 252                                 for (j = 0; j < fcat.childNodes.length; j++) {
 253                                         var feed = fcat.childNodes[j];
 254                                         feed.className = feed.className.replace("Selected", "");
 255                                 }
 256                         }
 257                 }
 258         }
 259 }
 260
 261
 262 function cleanSelected(element) {
 263         var content = document.getElementById(element);
 264
 265         for (i = 0; i < content.rows.length; i++) {
 266                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 267         }
 268 }
 269
 270 function getVisibleUnreadHeadlines() {
 271         var content = document.getElementById("headlinesList");
 272
 273         var rows = new Array();
 274
 275         for (i = 0; i < content.rows.length; i++) {
 276                 var row_id = content.rows[i].id.replace("RROW-", "");
 277                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 278                                 rows.push(row_id);
 279                 }
 280         }
 281         return rows;
 282 }
 283
 284 function getVisibleHeadlineIds() {
 285
 286         var content = document.getElementById("headlinesList");
 287
 288         var rows = new Array();
 289
 290         for (i = 0; i < content.rows.length; i++) {
 291                 var row_id = content.rows[i].id.replace("RROW-", "");
 292                 if (row_id.length > 0) {
 293                                 rows.push(row_id);
 294                 }
 295         }
 296         return rows;
 297 }
 298
 299 function getFirstVisibleHeadlineId() {
 300         var rows = getVisibleHeadlineIds();
 301         return rows[0];
 302 }
 303
 304 function getLastVisibleHeadlineId() {
 305         var rows = getVisibleHeadlineIds();
 306         return rows[rows.length-1];
 307 }
 308
 309 function markHeadline(id) {
 310         var row = document.getElementById("RROW-" + id);
 311         if (row) {
 312                 var is_active = false;
 313
 314                 if (row.className.match("Active")) {
 315                         is_active = true;
 316                 }
 317                 row.className = row.className.replace("Selected", "");
 318                 row.className = row.className.replace("Active", "");
 319                 row.className = row.className.replace("Insensitive", "");
 320
 321                 if (is_active) {
 322                         row.className = row.className = "Active";
 323                 }
 324
 325                 var check = document.getElementById("RCHK-" + id);
 326
 327                 if (check) {
 328                         check.checked = true;
 329                 }
 330
 331                 row.className = row.className + "Selected";
 332
 333         }
 334 }
 335
 336 function getFeedIds() {
 337         var content = document.getElementById("feedsList");
 338
 339         var rows = new Array();
 340
 341         for (i = 0; i < content.rows.length; i++) {
 342                 var id = content.rows[i].id.replace("FEEDR-", "");
 343                 if (id.length > 0) {
 344                         rows.push(id);
 345                 }
 346         }
 347
 348         return rows;
 349 }
 350
 351 function setCookie(name, value, lifetime, path, domain, secure) {
 352
 353         var d = false;
 354
 355         if (lifetime) {
 356                 d = new Date();
 357                 d.setTime(lifetime * 1000);
 358         }
 359
 360         int_setCookie(name, value, d, path, domain, secure);
 361
 362 }
 363
 364 function int_setCookie(name, value, expires, path, domain, secure) {
 365         document.cookie= name + "=" + escape(value) +
 366                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 367                 ((path) ? "; path=" + path : "") +
 368                 ((domain) ? "; domain=" + domain : "") +
 369                 ((secure) ? "; secure" : "");
 370 }
 371
 372 function delCookie(name, path, domain) {
 373         if (getCookie(name)) {
 374                 document.cookie = name + "=" +
 375                 ((path) ? ";path=" + path : "") +
 376                 ((domain) ? ";domain=" + domain : "" ) +
 377                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 378         }
 379 }
 380
 381
 382 function getCookie(name) {
 383
 384         var dc = document.cookie;
 385         var prefix = name + "=";
 386         var begin = dc.indexOf("; " + prefix);
 387         if (begin == -1) {
 388             begin = dc.indexOf(prefix);
 389             if (begin != 0) return null;
 390         }
 391         else {
 392             begin += 2;
 393         }
 394         var end = document.cookie.indexOf(";", begin);
 395         if (end == -1) {
 396             end = dc.length;
 397         }
 398         return unescape(dc.substring(begin + prefix.length, end));
 399 }
 400
 401 function disableContainerChildren(id, disable, doc) {
 402
 403         if (!doc) doc = document;
 404
 405         var container = doc.getElementById(id);
 406
 407         if (!container) {
 408                 //alert("disableContainerChildren: element " + id + " not found");
 409                 return;
 410         }
 411
 412         for (var i = 0; i < container.childNodes.length; i++) {
 413                 var child = container.childNodes[i];
 414
 415                 try {
 416                         child.disabled = disable;
 417                 } catch (E) {
 418
 419                 }
 420
 421                 if (disable) {
 422                         if (child.className && child.className.match("button")) {
 423                                 child.className = "disabledButton";
 424                         }
 425                 } else {
 426                         if (child.className && child.className.match("disabledButton")) {
 427                                 child.className = "button";
 428                         }
 429                 }
 430         }
 431
 432 }
 433
 434 function gotoPreferences() {
 435         document.location.href = "prefs.php";
 436 }
 437
 438 function gotoMain() {
 439         document.location.href = "tt-rss.php";
 440 }
 441
 442 function gotoExportOpml() {
 443         document.location.href = "opml.php?op=Export";
 444 }
 445
 446 function getActiveFeedId() {
 447 //      return getCookie("ttrss_vf_actfeed");
 448         try {
 449                 debug("gAFID: " + active_feed_id);
 450                 return active_feed_id;
 451         } catch (e) {
 452                 exception_error("getActiveFeedId", e);
 453         }
 454 }
 455
 456 function activeFeedIsCat() {
 457         return active_feed_is_cat;
 458 }
 459
 460 function setActiveFeedId(id) {
 461 //      return setCookie("ttrss_vf_actfeed", id);
 462         try {
 463                 debug("sAFID(" + id + ")");
 464                 active_feed_id = id;
 465         } catch (e) {
 466                 exception_error("setActiveFeedId", e);
 467         }
 468 }
 469
 470 function parse_counters(reply, scheduled_call) {
 471         try {
 472
 473                 var feeds_found = 0;
 474
 475                 if (reply.firstChild && reply.firstChild.firstChild) {
 476                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 477                         reply = reply.firstChild;
 478                 }
 479
 480                 for (var l = 0; l < reply.childNodes.length; l++) {
 481                         if (!reply.childNodes[l] ||
 482                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 483                                 // where did this come from?
 484                                 continue;
 485                         }
 486
 487                         var id = reply.childNodes[l].getAttribute("id");
 488                         var t = reply.childNodes[l].getAttribute("type");
 489                         var ctr = reply.childNodes[l].getAttribute("counter");
 490                         var error = reply.childNodes[l].getAttribute("error");
 491                         var has_img = reply.childNodes[l].getAttribute("hi");
 492                         var updated = reply.childNodes[l].getAttribute("updated");
 493
 494                         if (id == "global-unread") {
 495                                 global_unread = ctr;
 496                                 updateTitle();
 497                                 continue;
 498                         }
 499
 500                         if (id == "subscribed-feeds") {
 501                                 feeds_found = ctr;
 502                                 continue;
 503                         }
 504
 505                         if (t == "category") {
 506                                 var catctr = document.getElementById("FCATCTR-" + id);
 507                                 if (catctr) {
 508                                         catctr.innerHTML = "(" + ctr + " unread)";
 509                                 }
 510                                 continue;
 511                         }
 512
 513                         var feedctr = document.getElementById("FEEDCTR-" + id);
 514                         var feedu = document.getElementById("FEEDU-" + id);
 515                         var feedr = document.getElementById("FEEDR-" + id);
 516                         var feed_img = document.getElementById("FIMG-" + id);
 517                         var feedlink = document.getElementById("FEEDL-" + id);
 518                         var feedupd = document.getElementById("FLUPD-" + id);
 519
 520                         if (updated && feedlink) {
 521                                 if (error) {
 522                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 523                                 } else {
 524                                         feedlink.title = "Updated: " + updated;
 525                                 }
 526                         }
 527
 528                         if (updated && feedupd) {
 529                                 if (error) {
 530                                         feedupd.innerHTML = updated + " (Error)";
 531                                 } else {
 532                                         feedupd.innerHTML = updated;
 533                                 }
 534                         }
 535
 536                         if (feedctr && feedu && feedr) {
 537
 538                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 539                                         viewCurrentFeed();
 540                                 }
 541
 542                                 feedu.innerHTML = ctr;
 543
 544                                 if (error) {
 545                                         feedr.className = feedr.className.replace("feed", "error");
 546                                 } else if (id > 0) {
 547                                         feedr.className = feedr.className.replace("error", "feed");
 548                                 }
 549
 550                                 if (ctr > 0) {
 551                                         feedctr.className = "odd";
 552                                         if (!feedr.className.match("Unread")) {
 553                                                 var is_selected = feedr.className.match("Selected");
 554
 555                                                 feedr.className = feedr.className.replace("Selected", "");
 556                                                 feedr.className = feedr.className.replace("Unread", "");
 557
 558                                                 feedr.className = feedr.className + "Unread";
 559
 560                                                 if (is_selected) {
 561                                                         feedr.className = feedr.className + "Selected";
 562                                                 }
 563
 564                                         }
 565                                 } else {
 566                                         feedctr.className = "invisible";
 567                                         feedr.className = feedr.className.replace("Unread", "");
 568                                 }
 569                         }
 570                 }
 571
 572                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 573
 574                 var feeds_stored = number_of_feeds;
 575
 576                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 577
 578                 if (feeds_stored != feeds_found) {
 579                         number_of_feeds = feeds_found;
 580
 581                         if (feeds_stored != 0) {
 582                                 debug("Subscribed feed number changed, refreshing feedlist");
 583                                 setTimeout('updateFeedList(false, false)', 50);
 584                         }
 585                 }
 586
 587         } catch (e) {
 588                 exception_error("parse_counters", e);
 589         }
 590 }
 591
 592 function all_counters_callback() {
 593         if (xmlhttp_rpc.readyState == 4) {
 594                 try {
 595                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 596                                 debug("[all_counters_callback] backend did not return valid XML");
 597                                 return;
 598                         }
 599
 600                         debug("in all_counters_callback : " + xmlhttp_rpc.responseXML);
 601
 602                         var reply = xmlhttp_rpc.responseXML.firstChild;
 603
 604                         var counters = reply.firstChild;
 605
 606                         parse_counters(counters);
 607
 608                         var runtime = counters.nextSibling;
 609
 610                         if (runtime) {
 611                                 parse_runtime_info(runtime);
 612                         }
 613
 614                         if (getInitParam("feeds_sort_by_unread") == 1) {
 615                                 resort_feedlist();
 616                         }
 617
 618                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 619
 620                 } catch (e) {
 621                         exception_error("all_counters_callback", e);
 622                 }
 623         }
 624 }
 625
 626 function get_feed_entry_unread(doc, elem) {
 627
 628         var id = elem.id.replace("FEEDR-", "");
 629
 630         if (id <= 0) {
 631                 return -1;
 632         }
 633
 634         try {
 635                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 636         } catch (e) {
 637                 return -1;
 638         }
 639 }
 640
 641 function resort_category(doc, node) {
 642         debug("resort_category: " + node);
 643
 644         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 645                 for (i = 0; i < node.childNodes.length; i++) {
 646                         if (node.childNodes[i].nodeName != "LI") { continue; }
 647
 648                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 649                                 continue;
 650                         }
 651
 652                         for (j = i+1; j < node.childNodes.length; j++) {
 653                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 654
 655                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 656                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 657
 658                                 if (cur_val > tmp_val) {
 659                                         tempnode_i = node.childNodes[i].cloneNode(true);
 660                                         tempnode_j = node.childNodes[j].cloneNode(true);
 661                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 662                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 663                                 }
 664                         }
 665
 666                 }
 667         }
 668
 669 }
 670
 671 function resort_feedlist() {
 672         debug("resort_feedlist");
 673
 674         var fd = document;
 675
 676         if (fd.getElementById("feedCatHolder")) {
 677
 678                 var feeds = fd.getElementById("feedList");
 679                 var child = feeds.firstChild;
 680
 681                 while (child) {
 682
 683                         if (child.id == "feedCatHolder") {
 684                                 resort_category(fd, child.firstChild);
 685                         }
 686
 687                         child = child.nextSibling;
 688                 }
 689
 690         } else {
 691                 resort_category(fd, fd.getElementById("feedList"));
 692         }
 693 }
 694
 695 function update_all_counters(feed) {
 696         if (xmlhttp_ready(xmlhttp_rpc)) {
 697                 var query = "backend.php?op=rpc&subop=getAllCounters";
 698
 699                 if (feed > 0) {
 700                         query = query + "&aid=" + feed;
 701                 }
 702
 703                 xmlhttp_rpc.open("GET", query, true);
 704                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 705                 xmlhttp_rpc.send(null);
 706         }
 707 }
 708
 709 function popupHelp(tid) {
 710         var w = window.open("backend.php?op=help&tid=" + tid,
 711                 "Popup Help",
 712                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 713 }
 714
 715 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 716   * * @author Sundar Dorai-Raj
 717   * * Email: sdoraira@vt.edu
 718   * * This program is free software; you can redistribute it and/or
 719   * * modify it under the terms of the GNU General Public License
 720   * * as published by the Free Software Foundation; either version 2
 721   * * of the License, or (at your option) any later version,
 722   * * provided that any use properly credits the author.
 723   * * This program is distributed in the hope that it will be useful,
 724   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 725   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 726   * * GNU General Public License for more details at http://www.gnu.org * * */
 727
 728   var numbers=".0123456789";
 729   function isNumeric(x) {
 730     // is x a String or a character?
 731     if(x.length>1) {
 732       // remove negative sign
 733       x=Math.abs(x)+"";
 734       for(j=0;j<x.length;j++) {
 735         // call isNumeric recursively for each character
 736         number=isNumeric(x.substring(j,j+1));
 737         if(!number) return number;
 738       }
 739       return number;
 740     }
 741     else {
 742       // if x is number return true
 743       if(numbers.indexOf(x)>=0) return true;
 744       return false;
 745     }
 746   }
 747
 748
 749 function hideOrShowFeeds(doc, hide) {
 750
 751         debug("hideOrShowFeeds: " + doc + ", " + hide);
 752
 753         var fd = document;
 754
 755         var list = fd.getElementById("feedList");
 756
 757         if (fd.getElementById("feedCatHolder")) {
 758
 759                 var feeds = fd.getElementById("feedList");
 760                 var child = feeds.firstChild;
 761
 762                 while (child) {
 763
 764                         if (child.id == "feedCatHolder") {
 765                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 766                         }
 767
 768                         child = child.nextSibling;
 769                 }
 770
 771         } else {
 772                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 773         }
 774 }
 775
 776 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 777
 778 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 779
 780         var cat_unread = 0;
 781
 782         if (!node) {
 783                 debug("hideOrShowFeeds: passed node is null, aborting");
 784                 return;
 785         }
 786
 787         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 788                 for (i = 0; i < node.childNodes.length; i++) {
 789                         if (node.childNodes[i].nodeName != "LI") { continue; }
 790
 791                         if (node.childNodes[i].style != undefined) {
 792
 793                                 var has_unread = (node.childNodes[i].className != "feed");
 794
 795         //                      debug(node.childNodes[i].id + " --> " + has_unread);
 796
 797                                 if (hide && !has_unread) {
 798                                         node.childNodes[i].style.display = "none";
 799                                 }
 800
 801                                 if (!hide) {
 802                                         node.childNodes[i].style.display = "list-item";
 803                                 }
 804
 805                                 if (has_unread) {
 806                                         node.childNodes[i].style.display = "list-item";
 807                                         cat_unread++;
 808                                 }
 809                         }
 810                 }
 811         }
 812
 813         if (cat_unread == 0) {
 814                 if (cat_node.style == undefined) {
 815                         debug("ERROR: supplied cat_node " + cat_node +
 816                                 " has no styles. WTF?");
 817                         return;
 818                 }
 819                 if (hide) {
 820                         cat_node.style.display = "none";
 821                 } else {
 822                         cat_node.style.display = "list-item";
 823                 }
 824         } else {
 825                 try {
 826                         cat_node.style.display = "list-item";
 827                 } catch (e) {
 828                         debug(e);
 829                 }
 830         }
 831
 832 //      debug("unread for category: " + cat_unread);
 833 }
 834
 835 function selectTableRow(r, do_select) {
 836         r.className = r.className.replace("Selected", "");
 837
 838         if (do_select) {
 839                 r.className = r.className + "Selected";
 840         }
 841 }
 842
 843 function selectTableRowById(elem_id, check_id, do_select) {
 844
 845         try {
 846
 847                 var row = document.getElementById(elem_id);
 848
 849                 if (row) {
 850                         selectTableRow(row, do_select);
 851                 }
 852
 853                 var check = document.getElementById(check_id);
 854
 855                 if (check) {
 856                         check.checked = do_select;
 857                 }
 858         } catch (e) {
 859                 exception_error("selectTableRowById", e);
 860         }
 861 }
 862
 863 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 864         classcheck, reset_others) {
 865
 866         var content = document.getElementById(content_id);
 867
 868         if (!content) {
 869                 alert("[selectTableRows] Element " + content_id + " not found.");
 870                 return;
 871         }
 872
 873         for (i = 0; i < content.rows.length; i++) {
 874                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 875
 876                         if (content.rows[i].id.match(prefix)) {
 877                                 selectTableRow(content.rows[i], do_select);
 878
 879                                 var row_id = content.rows[i].id.replace(prefix, "");
 880                                 var check = document.getElementById(check_prefix + row_id);
 881
 882                                 if (check) {
 883                                         check.checked = do_select;
 884                                 }
 885                         } else if (reset_others) {
 886                                 selectTableRow(content.rows[i], false);
 887
 888                                 var row_id = content.rows[i].id.replace(prefix, "");
 889                                 var check = document.getElementById(check_prefix + row_id);
 890
 891                                 if (check) {
 892                                         check.checked = false;
 893                                 }
 894
 895                         }
 896                 } else if (reset_others) {
 897                         selectTableRow(content.rows[i], false);
 898
 899                         var row_id = content.rows[i].id.replace(prefix, "");
 900                         var check = document.getElementById(check_prefix + row_id);
 901
 902                         if (check) {
 903                                 check.checked = false;
 904                         }
 905
 906                 }
 907         }
 908 }
 909
 910 function getSelectedTableRowIds(content_id, prefix) {
 911
 912         var content = document.getElementById(content_id);
 913
 914         if (!content) {
 915                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 916                 return;
 917         }
 918
 919         var sel_rows = new Array();
 920
 921         for (i = 0; i < content.rows.length; i++) {
 922                 if (content.rows[i].id.match(prefix) &&
 923                                 content.rows[i].className.match("Selected")) {
 924
 925                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 926                         sel_rows.push(row_id);
 927                 }
 928         }
 929
 930         return sel_rows;
 931
 932 }
 933
 934 function toggleSelectRowById(sender, id) {
 935         var row = document.getElementById(id);
 936
 937         if (sender.checked) {
 938                 if (!row.className.match("Selected")) {
 939                         row.className = row.className + "Selected";
 940                 }
 941         } else {
 942                 if (row.className.match("Selected")) {
 943                         row.className = row.className.replace("Selected", "");
 944                 }
 945         }
 946 }
 947
 948 function toggleSelectListRow(sender) {
 949         var parent_row = sender.parentNode;
 950
 951         if (sender.checked) {
 952                 if (!parent_row.className.match("Selected")) {
 953                         parent_row.className = parent_row.className + "Selected";
 954                 }
 955         } else {
 956                 if (parent_row.className.match("Selected")) {
 957                         parent_row.className = parent_row.className.replace("Selected", "");
 958                 }
 959         }
 960 }
 961
 962
 963 function toggleSelectRow(sender) {
 964         var parent_row = sender.parentNode.parentNode;
 965
 966         if (sender.checked) {
 967                 if (!parent_row.className.match("Selected")) {
 968                         parent_row.className = parent_row.className + "Selected";
 969                 }
 970         } else {
 971                 if (parent_row.className.match("Selected")) {
 972                         parent_row.className = parent_row.className.replace("Selected", "");
 973                 }
 974         }
 975 }
 976
 977 function openExternalUrl(url) {
 978         var w = window.open(url);
 979 }
 980
 981 function getRelativeFeedId(list, id, direction, unread_only) {
 982         if (!id) {
 983                 if (direction == "next") {
 984                         for (i = 0; i < list.childNodes.length; i++) {
 985                                 var child = list.childNodes[i];
 986                                 if (child.id && child.id == "feedCatHolder") {
 987                                         if (child.lastChild) {
 988                                                 var cr = getRelativeFeedId(child.firstChild, id, direction, unread_only);
 989                                                 if (cr) return cr;
 990                                         }
 991                                 } else if (child.id && child.id.match("FEEDR-")) {
 992                                         return child.id.replace('FEEDR-', '');
 993                                 }
 994                         }
 995                 }
 996
 997                 // FIXME select last feed doesn't work when only unread feeds are visible
 998
 999                 if (direction == "prev") {
1000                         for (i = list.childNodes.length-1; i >= 0; i--) {
1001                                 var child = list.childNodes[i];
1002                                 if (child.id == "feedCatHolder") {
1003                                         if (child.firstChild) {
1004                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
1005                                                 if (cr) return cr;
1006                                         }
1007                                 } else if (child.id.match("FEEDR-")) {
1008
1009                                         if (getInitParam("hide_read_feeds") == 1) {
1010                                                 if (child.className != "feed") {
1011                                                         alert(child.className);
1012                                                         return child.id.replace('FEEDR-', '');
1013                                                 }
1014                                         } else {
1015                                                         return child.id.replace('FEEDR-', '');
1016                                         }
1017                                 }
1018                         }
1019                 }
1020         } else {
1021
1022                 var feed = list.ownerDocument.getElementById("FEEDR-" + id);
1023
1024                 if (getInitParam("hide_read_feeds") == 1) {
1025                         unread_only = true;
1026                 }
1027
1028                 if (direction == "next") {
1029
1030                         var e = feed;
1031
1032                         while (e) {
1033
1034                                 if (e.nextSibling) {
1035
1036                                         e = e.nextSibling;
1037
1038                                 } else if (e.parentNode.parentNode.nextSibling) {
1039
1040                                         var this_cat = e.parentNode.parentNode;
1041
1042                                         e = false;
1043
1044                                         if (this_cat && this_cat.nextSibling) {
1045                                                 while (!e && this_cat.nextSibling) {
1046                                                         this_cat = this_cat.nextSibling;
1047                                                         if (this_cat.id == "feedCatHolder") {
1048                                                                 e = this_cat.firstChild.firstChild;
1049                                                         }
1050                                                 }
1051                                         }
1052
1053                                 } else {
1054                                         e = false;
1055                            }
1056
1057                                 if (e) {
1058                                         if (!unread_only || (unread_only && e.className != "feed" &&
1059                                                         e.className.match("feed")))     {
1060                                                 return e.id.replace("FEEDR-", "");
1061                                         }
1062                                 }
1063                         }
1064
1065                 } else if (direction == "prev") {
1066
1067                         var e = feed;
1068
1069                         while (e) {
1070
1071                                 if (e.previousSibling) {
1072
1073                                         e = e.previousSibling;
1074
1075                                 } else if (e.parentNode.parentNode.previousSibling) {
1076
1077                                         var this_cat = e.parentNode.parentNode;
1078
1079                                         e = false;
1080
1081                                         if (this_cat && this_cat.previousSibling) {
1082                                                 while (!e && this_cat.previousSibling) {
1083                                                         this_cat = this_cat.previousSibling;
1084                                                         if (this_cat.id == "feedCatHolder") {
1085                                                                 e = this_cat.firstChild.lastChild;
1086                                                         }
1087                                                 }
1088                                         }
1089
1090                                 } else {
1091                                         e = false;
1092                            }
1093
1094                                 if (e) {
1095                                         if (!unread_only || (unread_only && e.className != "feed" &&
1096                                                         e.className.match("feed")))     {
1097                                                 return e.id.replace("FEEDR-", "");
1098                                         }
1099                                 }
1100                         }
1101                 }
1102         }
1103 }
1104
1105 function showBlockElement(id) {
1106         var elem = document.getElementById(id);
1107
1108         if (elem) {
1109                 elem.style.display = "block";
1110         } else {
1111                 alert("[showBlockElement] can't find element with id " + id);
1112         }
1113 }
1114
1115 function hideParentElement(e) {
1116         e.parentNode.style.display = "none";
1117 }
1118
1119 function dropboxSelect(e, v) {
1120         for (i = 0; i < e.length; i++) {
1121                 if (e[i].value == v) {
1122                         e.selectedIndex = i;
1123                         break;
1124                 }
1125         }
1126 }
1127
1128 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1129 // bugfixed just a little bit :-)
1130 function getURLParam(strParamName){
1131   var strReturn = "";
1132   var strHref = window.location.href;
1133
1134   if (strHref.indexOf("#") == strHref.length-1) {
1135                 strHref = strHref.substring(0, strHref.length-1);
1136   }
1137
1138   if ( strHref.indexOf("?") > -1 ){
1139     var strQueryString = strHref.substr(strHref.indexOf("?"));
1140     var aQueryString = strQueryString.split("&");
1141     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1142       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1143         var aParam = aQueryString[iParam].split("=");
1144         strReturn = aParam[1];
1145         break;
1146       }
1147     }
1148   }
1149   return strReturn;
1150 }
1151
1152 function leading_zero(p) {
1153         var s = String(p);
1154         if (s.length == 1) s = "0" + s;
1155         return s;
1156 }
1157
1158 function closeInfoBox(cleanup) {
1159         var box = document.getElementById('infoBox');
1160         var shadow = document.getElementById('infoBoxShadow');
1161
1162         if (shadow) {
1163                 shadow.style.display = "none";
1164         } else if (box) {
1165                 box.style.display = "none";
1166         }
1167
1168         if (cleanup) box.innerHTML = "&nbsp;";
1169
1170         enableHotkeys();
1171
1172         return false;
1173 }
1174
1175
1176 function displayDlg(id, param) {
1177
1178         if (!xmlhttp_ready(xmlhttp)) {
1179                 printLockingError();
1180                 return
1181         }
1182
1183         notify("");
1184
1185         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1186                 param_escape(id) + "&param=" + param_escape(param), true);
1187         xmlhttp.onreadystatechange=infobox_callback;
1188         xmlhttp.send(null);
1189
1190         disableHotkeys();
1191
1192         return false;
1193 }
1194
1195 function infobox_submit_callback() {
1196         if (xmlhttp.readyState == 4) {
1197                 closeInfoBox();
1198
1199                 try {
1200                         // called from prefs, reload tab
1201                         if (active_tab) {
1202                                 selectTab(active_tab, false);
1203                         }
1204                 } catch (e) { }
1205
1206                 notify(xmlhttp.responseText);
1207
1208         }
1209 }
1210
1211 function infobox_callback() {
1212         if (xmlhttp.readyState == 4) {
1213                 var box = document.getElementById('infoBox');
1214                 var shadow = document.getElementById('infoBoxShadow');
1215                 if (box) {
1216                         box.innerHTML=xmlhttp.responseText;
1217                         if (shadow) {
1218                                 shadow.style.display = "block";
1219                         } else {
1220                                 box.style.display = "block";
1221                         }
1222                 }
1223                 notify("");
1224         }
1225 }
1226
1227 function qaddFilter() {
1228
1229         if (!xmlhttp_ready(xmlhttp)) {
1230                 printLockingError();
1231                 return
1232         }
1233
1234         var form = document.forms['filter_add_form'];
1235         var reg_exp = form.reg_exp.value;
1236
1237         if (reg_exp == "") {
1238                 alert("Can't add filter: nothing to match on.");
1239                 return false;
1240         }
1241
1242         var query = Form.serialize("filter_add_form");
1243
1244         xmlhttp.open("GET", "backend.php?" + query, true);
1245         xmlhttp.onreadystatechange=infobox_submit_callback;
1246         xmlhttp.send(null);
1247
1248         return true;
1249 }
1250
1251 function toggleSubmitNotEmpty(e, submit_id) {
1252         try {
1253                 document.getElementById(submit_id).disabled = (e.value == "")
1254         } catch (e) {
1255                 exception_error("toggleSubmitNotEmpty", e);
1256         }
1257 }
1258
1259 function isValidURL(s) {
1260         return s.match("http://") != null || s.match("https://") != null;
1261 }
1262
1263 function qafAdd() {
1264
1265         if (!xmlhttp_ready(xmlhttp)) {
1266                 printLockingError();
1267                 return
1268         }
1269
1270         var form = document.forms['feed_add_form'];
1271         var feed_url = form.feed_url.value;
1272
1273         if (feed_url == "") {
1274                 alert("Can't subscribe: no feed URL given.");
1275                 return false;
1276         }
1277
1278         notify("Adding feed...", true);
1279
1280         closeInfoBox();
1281
1282         var feeds_doc = document;
1283
1284 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1285
1286         var query = Form.serialize("feed_add_form");
1287
1288         xmlhttp.open("GET", "backend.php?" + query, true);
1289         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1290         xmlhttp.send(null);
1291
1292         return false;
1293 }
1294
1295 function filterCR(e, f)
1296 {
1297      var key;
1298
1299      if(window.event)
1300           key = window.event.keyCode;     //IE
1301      else
1302           key = e.which;     //firefox
1303
1304         if (key == 13) {
1305                 if (typeof f != 'undefined') {
1306                         f();
1307                         return false;
1308                 } else {
1309                         return false;
1310                 }
1311         } else {
1312                 return true;
1313         }
1314 }
1315
1316 function getMainContext() {
1317         return this.window;
1318 }
1319
1320 function getFeedsContext() {
1321         return this.window;
1322 }
1323
1324 function getContentContext() {
1325         return this.window;
1326 }
1327
1328 function getHeadlinesContext() {
1329         return this.window;
1330 }
1331
1332 var debug_last_class = "even";
1333
1334 function debug(msg) {
1335
1336         if (debug_last_class == "even") {
1337                 debug_last_class = "odd";
1338         } else {
1339                 debug_last_class = "even";
1340         }
1341
1342         var c = document.getElementById('debug_output');
1343         if (c && c.style.display == "block") {
1344                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1345                         c.removeChild(c.lastChild);
1346                 }
1347
1348                 var d = new Date();
1349                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1350                         ":" + leading_zero(d.getSeconds());
1351                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1352                         msg + "</li>" + c.innerHTML;
1353         }
1354 }
1355
1356 function getInitParam(key) {
1357         return getMainContext().init_params[key];
1358 }
1359
1360 function storeInitParam(key, value, is_client) {
1361         try {
1362                 if (!is_client) {
1363                         if (getMainContext().init_params[key] != value) {
1364                                 debug("storeInitParam: " + key + " => " + value);
1365                                 //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1366                                 //      param_escape(key) + "&value=" + param_escape(value));
1367                                 var f = getMainContext().document.getElementById("backReqBox");
1368                                 f.src = "backend.php?op=rpc&subop=storeParam&key=" +
1369                                         param_escape(key) + "&value=" + param_escape(value);
1370                         }
1371                 }
1372                 getMainContext().init_params[key] = value;
1373         } catch (e) {
1374                 exception_error("storeInitParam", e);
1375         }
1376 }
1377
1378 /*
1379 function storeInitParams(params, is_client) {
1380         try {
1381                 var s = "";
1382
1383                 for (k in params) {
1384                         if (getMainContext().init_params[k] != params[k]) {
1385                                 s += k + "=" + params[k] + ";";
1386                                 getMainContext().init_params[k] = params[k];
1387                         }
1388                 }
1389
1390                 debug("storeInitParams: " + s);
1391
1392                 if (!is_client) {
1393                         new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
1394                 }
1395         } catch (e) {
1396                 exception_error("storeInitParams", e);
1397         }
1398 }*/
1399
1400 function fatalError(code, message) {
1401         try {
1402
1403                 if (code != 6) {
1404
1405                         var fe = document.getElementById("fatal_error");
1406                         var fc = document.getElementById("fatal_error_msg");
1407
1408                         fc.innerHTML = "Code " + code + ": " + message;
1409
1410                         fe.style.display = "block";
1411                 } else {
1412                         window.location.href = "login.php?rt=none";
1413                 }
1414
1415         } catch (e) {
1416                 exception_error("fatalError", e);
1417         }
1418 }
1419
1420 function getFeedName(id, is_cat) {
1421         var d = getFeedsContext().document;
1422
1423         var e;
1424
1425         if (is_cat) {
1426                 e = d.getElementById("FCATN-" + id);
1427         } else {
1428                 e = d.getElementById("FEEDN-" + id);
1429         }
1430         if (e) {
1431                 return e.innerHTML.stripTags();
1432         } else {
1433                 return null;
1434         }
1435 }
1436
1437 function viewContentUrl(url) {
1438         getContentContext().location = url;
1439 }