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 exception_error(location, e, silent) {
  11         var msg;
  12
  13         if (e.fileName) {
  14                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  15
  16                 msg = "Exception: " + e.name + ", " + e.message +
  17                         "\nFunction: " + location + "()" +
  18                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  19
  20         } else {
  21                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  22         }
  23
  24         debug("<b>EXCEPTION: " + msg + "</b>");
  25
  26         if (!silent) {
  27                 alert(msg);
  28         }
  29 }
  30
  31 function disableHotkeys() {
  32         hotkeys_enabled = false;
  33 }
  34
  35 function enableHotkeys() {
  36         hotkeys_enabled = true;
  37 }
  38
  39 function xmlhttp_ready(obj) {
  40         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  41 }
  42
  43 function notify_callback() {
  44         var container = document.getElementById('notify');
  45         if (xmlhttp.readyState == 4) {
  46                 container.innerHTML=xmlhttp.responseText;
  47         }
  48 }
  49
  50 function rpc_notify_callback() {
  51         var container = document.getElementById('notify');
  52         if (xmlhttp_rpc.readyState == 4) {
  53                 container.innerHTML=xmlhttp_rpc.responseText;
  54         }
  55 }
  56
  57 function param_escape(arg) {
  58         if (typeof encodeURIComponent != 'undefined')
  59                 return encodeURIComponent(arg);
  60         else
  61                 return escape(arg);
  62 }
  63
  64 function param_unescape(arg) {
  65         if (typeof decodeURIComponent != 'undefined')
  66                 return decodeURIComponent(arg);
  67         else
  68                 return unescape(arg);
  69 }
  70
  71 function delay(gap) {
  72         var then,now;
  73         then=new Date().getTime();
  74         now=then;
  75         while((now-then)<gap) {
  76                 now=new Date().getTime();
  77         }
  78 }
  79
  80 var notify_hide_timerid = false;
  81 var notify_last_doc = false;
  82
  83 var notify_effect = false;
  84
  85 function hide_notify() {
  86         if (notify_last_doc) {
  87                 var n = notify_last_doc.getElementById("notify");
  88                 if (browser_has_opacity()) {
  89                         if (notify_opacity >= 0) {
  90                                 notify_opacity = notify_opacity - 0.1;
  91                                 n.style.opacity = notify_opacity;
  92                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  93                         } else {
  94                                 n.style.display = "none";
  95                                 n.style.opacity = 1;
  96                         }
  97                 } else {
  98                         n.style.display = "none";
  99                 }
 100         }
 101 }
 102
 103 function notify_real(msg, doc, no_hide, is_err) {
 104
 105         var n = doc.getElementById("notify");
 106         var nb = doc.getElementById("notify_body");
 107
 108         if (!n || !nb) return;
 109
 110         if (notify_hide_timerid) {
 111                 window.clearTimeout(notify_hide_timerid);
 112         }
 113
 114         notify_last_doc = doc;
 115         notify_opacity = 1;
 116
 117         if (msg == "") {
 118                 if (n.style.display == "block") {
 119                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 120                 }
 121                 return;
 122         } else {
 123                 n.style.display = "block";
 124         }
 125
 126         if (is_err) {
 127                 n.style.backgroundColor = "#ffcccc";
 128                 n.style.color = "black";
 129                 n.style.borderColor = "#ff0000";
 130         } else {
 131                 n.style.backgroundColor = "#fff7d5";
 132                 n.style.borderColor = "#d7c47a";
 133                 n.style.color = "black";
 134         }
 135
 136         nb.innerHTML = msg;
 137
 138         if (!no_hide) {
 139                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 140         }
 141 }
 142
 143 function p_notify(msg, no_hide, is_err) {
 144         notify_real(msg, parent.document, no_hide, is_err);
 145 }
 146
 147 function notify(msg, no_hide, is_err) {
 148         notify_real(msg, document, no_hide, is_err);
 149 }
 150
 151 function printLockingError() {
 152         notify("Please wait until operation finishes");}
 153
 154 var seq = "";
 155
 156 function hotkey_handler(e) {
 157
 158         try {
 159
 160                 var keycode;
 161
 162                 if (!hotkeys_enabled) return;
 163
 164                 if (window.event) {
 165                         keycode = window.event.keyCode;
 166                 } else if (e) {
 167                         keycode = e.which;
 168                 }
 169
 170                 if (keycode == 13 || keycode == 27) {
 171                         seq = "";
 172                 } else {
 173                         seq = seq + "" + keycode;
 174                 }
 175
 176                 var m_ctx = getMainContext();
 177                 var f_ctx = getFeedsContext();
 178                 var h_ctx = getHeadlinesContext();
 179
 180                 if (keycode == 82) { // r
 181                         return m_ctx.scheduleFeedUpdate(true);
 182                 }
 183
 184                 if (keycode == 83) { // r
 185                         return m_ctx.displayDlg("search", getActiveFeedId());
 186                 }
 187
 188                 if (keycode == 85) { // u
 189                         if (getActiveFeedId()) {
 190                                 return f_ctx.viewfeed(getActiveFeedId(), "ForceUpdate");
 191                         }
 192                 }
 193
 194                 if (keycode == 65) { // a
 195                         return m_ctx.toggleDispRead();
 196                 }
 197
 198                 var f_doc = m_ctx.frames["feeds-frame"].document;
 199                 var feedlist = f_doc.getElementById('feedList');
 200
 201                 if (keycode == 74) { // j
 202                         var feed = getActiveFeedId();
 203                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 204                         if (new_feed) viewfeed(new_feed, '');
 205                 }
 206
 207                 if (keycode == 75) { // k
 208                         var feed = getActiveFeedId();
 209                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 210                         if (new_feed) viewfeed(new_feed, '');
 211                 }
 212
 213                 if (keycode == 78 || keycode == 40) { // n, down
 214                         return h_ctx.moveToPost('next');
 215                 }
 216
 217                 if (keycode == 80 || keycode == 38) { // p, up
 218                         return h_ctx.moveToPost('prev');
 219                 }
 220
 221                 if (document.getElementById("piggie")) {
 222
 223                         if (seq.match("807371717369")) {
 224                                 seq = "";
 225                                 localPiggieFunction(true);
 226                         } else {
 227                                 localPiggieFunction(false);
 228                         }
 229                 }
 230
 231                 if (typeof localHotkeyHandler != 'undefined') {
 232                         try {
 233                                 localHotkeyHandler(keycode);
 234                         } catch (e) {
 235                                 exception_error("hotkey_handler, local:", e);
 236                         }
 237                 }
 238         } catch (e) {
 239                 exception_error("hotkey_handler", e);
 240         }
 241 }
 242
 243 function cleanSelectedList(element) {
 244         var content = document.getElementById(element);
 245
 246         if (!document.getElementById("feedCatHolder")) {
 247                 for (i = 0; i < content.childNodes.length; i++) {
 248                         var child = content.childNodes[i];
 249                         try {
 250                                 child.className = child.className.replace("Selected", "");
 251                         } catch (e) {
 252                                 //
 253                         }
 254                 }
 255         } else {
 256                 for (i = 0; i < content.childNodes.length; i++) {
 257                         var child = content.childNodes[i];
 258                         if (child.id == "feedCatHolder") {
 259                                 parent.debug(child.id);
 260                                 var fcat = child.lastChild;
 261                                 for (j = 0; j < fcat.childNodes.length; j++) {
 262                                         var feed = fcat.childNodes[j];
 263                                         feed.className = feed.className.replace("Selected", "");
 264                                 }
 265                         }
 266                 }
 267         }
 268 }
 269
 270
 271 function cleanSelected(element) {
 272         var content = document.getElementById(element);
 273
 274         for (i = 0; i < content.rows.length; i++) {
 275                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 276         }
 277 }
 278
 279 function getVisibleUnreadHeadlines() {
 280         var content = document.getElementById("headlinesList");
 281
 282         var rows = new Array();
 283
 284         for (i = 0; i < content.rows.length; i++) {
 285                 var row_id = content.rows[i].id.replace("RROW-", "");
 286                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 287                                 rows.push(row_id);
 288                 }
 289         }
 290         return rows;
 291 }
 292
 293 function getVisibleHeadlineIds() {
 294
 295         var content = document.getElementById("headlinesList");
 296
 297         var rows = new Array();
 298
 299         for (i = 0; i < content.rows.length; i++) {
 300                 var row_id = content.rows[i].id.replace("RROW-", "");
 301                 if (row_id.length > 0) {
 302                                 rows.push(row_id);
 303                 }
 304         }
 305         return rows;
 306 }
 307
 308 function getFirstVisibleHeadlineId() {
 309         var rows = getVisibleHeadlineIds();
 310         return rows[0];
 311 }
 312
 313 function getLastVisibleHeadlineId() {
 314         var rows = getVisibleHeadlineIds();
 315         return rows[rows.length-1];
 316 }
 317
 318 function markHeadline(id) {
 319         var row = document.getElementById("RROW-" + id);
 320         if (row) {
 321                 var is_active = false;
 322
 323                 if (row.className.match("Active")) {
 324                         is_active = true;
 325                 }
 326                 row.className = row.className.replace("Selected", "");
 327                 row.className = row.className.replace("Active", "");
 328                 row.className = row.className.replace("Insensitive", "");
 329
 330                 if (is_active) {
 331                         row.className = row.className = "Active";
 332                 }
 333
 334                 var check = document.getElementById("RCHK-" + id);
 335
 336                 if (check) {
 337                         check.checked = true;
 338                 }
 339
 340                 row.className = row.className + "Selected";
 341
 342         }
 343 }
 344
 345 function getFeedIds() {
 346         var content = document.getElementById("feedsList");
 347
 348         var rows = new Array();
 349
 350         for (i = 0; i < content.rows.length; i++) {
 351                 var id = content.rows[i].id.replace("FEEDR-", "");
 352                 if (id.length > 0) {
 353                         rows.push(id);
 354                 }
 355         }
 356
 357         return rows;
 358 }
 359
 360 function setCookie(name, value, lifetime, path, domain, secure) {
 361
 362         var d = false;
 363
 364         if (lifetime) {
 365                 d = new Date();
 366                 d.setTime(lifetime * 1000);
 367         }
 368
 369         int_setCookie(name, value, d, path, domain, secure);
 370
 371 }
 372
 373 function int_setCookie(name, value, expires, path, domain, secure) {
 374         document.cookie= name + "=" + escape(value) +
 375                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 376                 ((path) ? "; path=" + path : "") +
 377                 ((domain) ? "; domain=" + domain : "") +
 378                 ((secure) ? "; secure" : "");
 379 }
 380
 381 function delCookie(name, path, domain) {
 382         if (getCookie(name)) {
 383                 document.cookie = name + "=" +
 384                 ((path) ? ";path=" + path : "") +
 385                 ((domain) ? ";domain=" + domain : "" ) +
 386                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 387         }
 388 }
 389
 390
 391 function getCookie(name) {
 392
 393         var dc = document.cookie;
 394         var prefix = name + "=";
 395         var begin = dc.indexOf("; " + prefix);
 396         if (begin == -1) {
 397             begin = dc.indexOf(prefix);
 398             if (begin != 0) return null;
 399         }
 400         else {
 401             begin += 2;
 402         }
 403         var end = document.cookie.indexOf(";", begin);
 404         if (end == -1) {
 405             end = dc.length;
 406         }
 407         return unescape(dc.substring(begin + prefix.length, end));
 408 }
 409
 410 function disableContainerChildren(id, disable, doc) {
 411
 412         if (!doc) doc = document;
 413
 414         var container = doc.getElementById(id);
 415
 416         if (!container) {
 417                 //alert("disableContainerChildren: element " + id + " not found");
 418                 return;
 419         }
 420
 421         for (var i = 0; i < container.childNodes.length; i++) {
 422                 var child = container.childNodes[i];
 423
 424                 try {
 425                         child.disabled = disable;
 426                 } catch (E) {
 427
 428                 }
 429
 430                 if (disable) {
 431                         if (child.className && child.className.match("button")) {
 432                                 child.className = "disabledButton";
 433                         }
 434                 } else {
 435                         if (child.className && child.className.match("disabledButton")) {
 436                                 child.className = "button";
 437                         }
 438                 }
 439         }
 440
 441 }
 442
 443 function gotoPreferences() {
 444         document.location.href = "prefs.php";
 445 }
 446
 447 function gotoMain() {
 448         document.location.href = "tt-rss.php";
 449 }
 450
 451 function gotoExportOpml() {
 452         document.location.href = "opml.php?op=Export";
 453 }
 454
 455 function getActiveFeedId() {
 456 //      return getCookie("ttrss_vf_actfeed");
 457         try {
 458                 debug("gAFID: " + getMainContext().active_feed_id);
 459                 return getMainContext().active_feed_id;
 460         } catch (e) {
 461                 exception_error("getActiveFeedId", e);
 462         }
 463 }
 464
 465 function activeFeedIsCat() {
 466         return getMainContext().active_feed_is_cat;
 467 }
 468
 469 function setActiveFeedId(id) {
 470 //      return setCookie("ttrss_vf_actfeed", id);
 471         try {
 472                 debug("sAFID(" + id + ")");
 473                 getMainContext().active_feed_id = id;
 474         } catch (e) {
 475                 exception_error("setActiveFeedId", e);
 476         }
 477 }
 478
 479 function parse_counters(reply, scheduled_call) {
 480         try {
 481                 var f_document = getFeedsContext().document;
 482                 var title_obj = getMainContext();
 483
 484                 if (reply.firstChild && reply.firstChild.firstChild) {
 485                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 486                         reply = reply.firstChild;
 487                 }
 488
 489                 debug("F_DOC: " + f_document + ", T_OBJ: " + title_obj);
 490
 491                 for (var l = 0; l < reply.childNodes.length; l++) {
 492                         if (!reply.childNodes[l] ||
 493                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 494                                 // where did this come from?
 495                                 continue;
 496                         }
 497
 498                         var id = reply.childNodes[l].getAttribute("id");
 499                         var t = reply.childNodes[l].getAttribute("type");
 500                         var ctr = reply.childNodes[l].getAttribute("counter");
 501                         var error = reply.childNodes[l].getAttribute("error");
 502                         var has_img = reply.childNodes[l].getAttribute("hi");
 503                         var updated = reply.childNodes[l].getAttribute("updated");
 504
 505                         if (id == "global-unread") {
 506                                 title_obj.global_unread = ctr;
 507                                 title_obj.updateTitle();
 508                                 continue;
 509                         }
 510
 511                         if (t == "category") {
 512                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 513                                 if (catctr) {
 514                                         catctr.innerHTML = "(" + ctr + " unread)";
 515                                 }
 516                                 continue;
 517                         }
 518
 519                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 520                         var feedu = f_document.getElementById("FEEDU-" + id);
 521                         var feedr = f_document.getElementById("FEEDR-" + id);
 522                         var feed_img = f_document.getElementById("FIMG-" + id);
 523                         var feedlink = f_document.getElementById("FEEDL-" + id);
 524                         var feedupd = f_document.getElementById("FLUPD-" + id);
 525
 526                         if (updated && feedlink) {
 527                                 if (error) {
 528                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 529                                 } else {
 530                                         feedlink.title = "Updated: " + updated;
 531                                 }
 532                         }
 533
 534                         if (updated && feedupd) {
 535                                 if (error) {
 536                                         feedupd.innerHTML = updated + " (Error)";
 537                                 } else {
 538                                         feedupd.innerHTML = updated;
 539                                 }
 540                         }
 541
 542                         if (feedctr && feedu && feedr) {
 543
 544                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 545                                         var hf = title_obj.parent.frames["headlines-frame"];
 546                                         hf.location.reload(true);
 547                                 }
 548
 549                                 feedu.innerHTML = ctr;
 550
 551                                 if (error) {
 552                                         feedr.className = feedr.className.replace("feed", "error");
 553                                 } else if (id > 0) {
 554                                         feedr.className = feedr.className.replace("error", "feed");
 555                                 }
 556
 557                                 if (ctr > 0) {
 558                                         feedctr.className = "odd";
 559                                         if (!feedr.className.match("Unread")) {
 560                                                 var is_selected = feedr.className.match("Selected");
 561
 562                                                 feedr.className = feedr.className.replace("Selected", "");
 563                                                 feedr.className = feedr.className.replace("Unread", "");
 564
 565                                                 feedr.className = feedr.className + "Unread";
 566
 567                                                 if (is_selected) {
 568                                                         feedr.className = feedr.className + "Selected";
 569                                                 }
 570
 571                                         }
 572                                 } else {
 573                                         feedctr.className = "invisible";
 574                                         feedr.className = feedr.className.replace("Unread", "");
 575                                 }
 576                         }
 577                 }
 578         } catch (e) {
 579                 exception_error("parse_counters", e);
 580         }
 581 }
 582
 583 function all_counters_callback() {
 584         if (xmlhttp_rpc.readyState == 4) {
 585                 try {
 586                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 587                                 debug("[all_counters_callback] backend did not return valid XML");
 588                                 return;
 589                         }
 590
 591                         debug("in all_counters_callback");
 592
 593                         var reply = xmlhttp_rpc.responseXML.firstChild;
 594
 595                         var counters = reply.firstChild;
 596
 597                         parse_counters(counters);
 598
 599                         var runtime = counters.nextSibling;
 600
 601                         if (runtime) {
 602                                 getMainContext().parse_runtime_info(runtime);
 603                         }
 604
 605                         if (getInitParam("feeds_sort_by_unread") == 1) {
 606                                 resort_feedlist();
 607                         }
 608
 609                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 610
 611                 } catch (e) {
 612                         exception_error("all_counters_callback", e);
 613                 }
 614         }
 615 }
 616
 617 function get_feed_entry_unread(doc, elem) {
 618
 619         var id = elem.id.replace("FEEDR-", "");
 620
 621         if (id <= 0) {
 622                 return -1;
 623         }
 624
 625         try {
 626                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 627         } catch (e) {
 628                 return -1;
 629         }
 630 }
 631
 632 function resort_category(doc, node) {
 633         debug("resort_category: " + node);
 634
 635         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 636                 for (i = 0; i < node.childNodes.length; i++) {
 637                         if (node.childNodes[i].nodeName != "LI") { continue; }
 638
 639                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 640                                 continue;
 641                         }
 642
 643                         for (j = i+1; j < node.childNodes.length; j++) {
 644                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 645
 646                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 647                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 648
 649                                 if (cur_val > tmp_val) {
 650                                         tempnode_i = node.childNodes[i].cloneNode(true);
 651                                         tempnode_j = node.childNodes[j].cloneNode(true);
 652                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 653                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 654                                 }
 655                         }
 656
 657                 }
 658         }
 659
 660 }
 661
 662 function resort_feedlist() {
 663         debug("resort_feedlist");
 664
 665         var fd = getFeedsContext().document;
 666
 667         if (fd.getElementById("feedCatHolder")) {
 668
 669                 var feeds = fd.getElementById("feedList");
 670                 var child = feeds.firstChild;
 671
 672                 while (child) {
 673
 674                         if (child.id == "feedCatHolder") {
 675                                 resort_category(fd, child.firstChild);
 676                         }
 677
 678                         child = child.nextSibling;
 679                 }
 680
 681         } else {
 682                 resort_category(fd, fd.getElementById("feedList"));
 683         }
 684 }
 685
 686 function update_all_counters(feed) {
 687         if (xmlhttp_ready(xmlhttp_rpc)) {
 688                 var query = "backend.php?op=rpc&subop=getAllCounters";
 689
 690                 if (feed > 0) {
 691                         query = query + "&aid=" + feed;
 692                 }
 693
 694                 xmlhttp_rpc.open("GET", query, true);
 695                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 696                 xmlhttp_rpc.send(null);
 697         }
 698 }
 699
 700 function popupHelp(tid) {
 701         var w = window.open("backend.php?op=help&tid=" + tid,
 702                 "Popup Help",
 703                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 704 }
 705
 706 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 707   * * @author Sundar Dorai-Raj
 708   * * Email: sdoraira@vt.edu
 709   * * This program is free software; you can redistribute it and/or
 710   * * modify it under the terms of the GNU General Public License
 711   * * as published by the Free Software Foundation; either version 2
 712   * * of the License, or (at your option) any later version,
 713   * * provided that any use properly credits the author.
 714   * * This program is distributed in the hope that it will be useful,
 715   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 716   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 717   * * GNU General Public License for more details at http://www.gnu.org * * */
 718
 719   var numbers=".0123456789";
 720   function isNumeric(x) {
 721     // is x a String or a character?
 722     if(x.length>1) {
 723       // remove negative sign
 724       x=Math.abs(x)+"";
 725       for(j=0;j<x.length;j++) {
 726         // call isNumeric recursively for each character
 727         number=isNumeric(x.substring(j,j+1));
 728         if(!number) return number;
 729       }
 730       return number;
 731     }
 732     else {
 733       // if x is number return true
 734       if(numbers.indexOf(x)>=0) return true;
 735       return false;
 736     }
 737   }
 738
 739
 740 function hideOrShowFeeds(doc, hide) {
 741
 742         var fd = getFeedsContext().document;
 743
 744         var list = fd.getElementById("feedList");
 745
 746         if (fd.getElementById("feedCatHolder")) {
 747
 748                 var feeds = fd.getElementById("feedList");
 749                 var child = feeds.firstChild;
 750
 751                 while (child) {
 752
 753                         if (child.id == "feedCatHolder") {
 754                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 755                         }
 756
 757                         child = child.nextSibling;
 758                 }
 759
 760         } else {
 761                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 762         }
 763 }
 764
 765 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 766
 767 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 768
 769         var cat_unread = 0;
 770
 771         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 772                 for (i = 0; i < node.childNodes.length; i++) {
 773                         if (node.childNodes[i].nodeName != "LI") { continue; }
 774
 775                         var has_unread = (node.childNodes[i].className != "feed");
 776
 777 //                      debug(node.childNodes[i].id + " --> " + has_unread);
 778
 779                         if (hide && !has_unread) {
 780                                 node.childNodes[i].style.display = "none";
 781                         }
 782
 783                         if (!hide) {
 784                                 node.childNodes[i].style.display = "list-item";
 785                         }
 786
 787                         if (has_unread) {
 788                                 cat_unread++;
 789                         }
 790
 791                 }
 792         }
 793
 794         if (cat_unread == 0) {
 795                 if (hide) {
 796                         cat_node.style.display = "none";
 797                 } else {
 798                         cat_node.style.display = "list-item";
 799                 }
 800         }
 801
 802 //      debug("unread for category: " + cat_unread);
 803 }
 804
 805 function selectTableRow(r, do_select) {
 806         r.className = r.className.replace("Selected", "");
 807
 808         if (do_select) {
 809                 r.className = r.className + "Selected";
 810         }
 811 }
 812
 813 function selectTableRowById(elem_id, check_id, do_select) {
 814
 815         try {
 816
 817                 var row = document.getElementById(elem_id);
 818
 819                 if (row) {
 820                         selectTableRow(row, do_select);
 821                 }
 822
 823                 var check = document.getElementById(check_id);
 824
 825                 if (check) {
 826                         check.checked = do_select;
 827                 }
 828         } catch (e) {
 829                 exception_error("selectTableRowById", e);
 830         }
 831 }
 832
 833 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 834         classcheck, reset_others) {
 835
 836         var content = document.getElementById(content_id);
 837
 838         if (!content) {
 839                 alert("[selectTableRows] Element " + content_id + " not found.");
 840                 return;
 841         }
 842
 843         for (i = 0; i < content.rows.length; i++) {
 844                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 845
 846                         if (content.rows[i].id.match(prefix)) {
 847                                 selectTableRow(content.rows[i], do_select);
 848
 849                                 var row_id = content.rows[i].id.replace(prefix, "");
 850                                 var check = document.getElementById(check_prefix + row_id);
 851
 852                                 if (check) {
 853                                         check.checked = do_select;
 854                                 }
 855                         } else if (reset_others) {
 856                                 selectTableRow(content.rows[i], false);
 857
 858                                 var row_id = content.rows[i].id.replace(prefix, "");
 859                                 var check = document.getElementById(check_prefix + row_id);
 860
 861                                 if (check) {
 862                                         check.checked = false;
 863                                 }
 864
 865                         }
 866                 } else if (reset_others) {
 867                         selectTableRow(content.rows[i], false);
 868
 869                         var row_id = content.rows[i].id.replace(prefix, "");
 870                         var check = document.getElementById(check_prefix + row_id);
 871
 872                         if (check) {
 873                                 check.checked = false;
 874                         }
 875
 876                 }
 877         }
 878 }
 879
 880 function getSelectedTableRowIds(content_id, prefix) {
 881
 882         var content = document.getElementById(content_id);
 883
 884         if (!content) {
 885                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 886                 return;
 887         }
 888
 889         var sel_rows = new Array();
 890
 891         for (i = 0; i < content.rows.length; i++) {
 892                 if (content.rows[i].id.match(prefix) &&
 893                                 content.rows[i].className.match("Selected")) {
 894
 895                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 896                         sel_rows.push(row_id);
 897                 }
 898         }
 899
 900         return sel_rows;
 901
 902 }
 903
 904 function toggleSelectRowById(sender, id) {
 905         var row = document.getElementById(id);
 906
 907         if (sender.checked) {
 908                 if (!row.className.match("Selected")) {
 909                         row.className = row.className + "Selected";
 910                 }
 911         } else {
 912                 if (row.className.match("Selected")) {
 913                         row.className = row.className.replace("Selected", "");
 914                 }
 915         }
 916 }
 917
 918 function toggleSelectListRow(sender) {
 919         var parent_row = sender.parentNode;
 920
 921         if (sender.checked) {
 922                 if (!parent_row.className.match("Selected")) {
 923                         parent_row.className = parent_row.className + "Selected";
 924                 }
 925         } else {
 926                 if (parent_row.className.match("Selected")) {
 927                         parent_row.className = parent_row.className.replace("Selected", "");
 928                 }
 929         }
 930 }
 931
 932
 933 function toggleSelectRow(sender) {
 934         var parent_row = sender.parentNode.parentNode;
 935
 936         if (sender.checked) {
 937                 if (!parent_row.className.match("Selected")) {
 938                         parent_row.className = parent_row.className + "Selected";
 939                 }
 940         } else {
 941                 if (parent_row.className.match("Selected")) {
 942                         parent_row.className = parent_row.className.replace("Selected", "");
 943                 }
 944         }
 945 }
 946
 947 function openExternalUrl(url) {
 948         var w = window.open(url);
 949 }
 950
 951 function getRelativeFeedId(list, id, direction, unread_only) {
 952         if (!id) {
 953                 if (direction == "next") {
 954                         for (i = 0; i < list.childNodes.length; i++) {
 955                                 var child = list.childNodes[i];
 956                                 if (child.id && child.id == "feedCatHolder") {
 957                                         if (child.lastChild) {
 958                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 959                                                 if (cr) return cr;
 960                                         }
 961                                 } else if (child.id && child.id.match("FEEDR-")) {
 962                                         return child.id.replace('FEEDR-', '');
 963                                 }
 964                         }
 965                 }
 966
 967                 // FIXME select last feed doesn't work when only unread feeds are visible
 968
 969                 if (direction == "prev") {
 970                         for (i = list.childNodes.length-1; i >= 0; i--) {
 971                                 var child = list.childNodes[i];
 972                                 if (child.id == "feedCatHolder") {
 973                                         if (child.firstChild) {
 974                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 975                                                 if (cr) return cr;
 976                                         }
 977                                 } else if (child.id.match("FEEDR-")) {
 978
 979                                         if (getInitParam("hide_read_feeds") == 1) {
 980                                                 if (child.className != "feed") {
 981                                                         alert(child.className);
 982                                                         return child.id.replace('FEEDR-', '');
 983                                                 }
 984                                         } else {
 985                                                         return child.id.replace('FEEDR-', '');
 986                                         }
 987                                 }
 988                         }
 989                 }
 990         } else {
 991
 992                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
 993
 994                 if (getInitParam("hide_read_feeds") == 1) {
 995                         unread_only = true;
 996                 }
 997
 998                 if (direction == "next") {
 999
1000                         var e = feed;
1001
1002                         while (e) {
1003
1004                                 if (e.nextSibling) {
1005
1006                                         e = e.nextSibling;
1007
1008                                 } else if (e.parentNode.parentNode.nextSibling) {
1009
1010                                         var this_cat = e.parentNode.parentNode;
1011
1012                                         e = false;
1013
1014                                         if (this_cat && this_cat.nextSibling) {
1015                                                 while (!e && this_cat.nextSibling) {
1016                                                         this_cat = this_cat.nextSibling;
1017                                                         if (this_cat.id == "feedCatHolder") {
1018                                                                 e = this_cat.firstChild.firstChild;
1019                                                         }
1020                                                 }
1021                                         }
1022
1023                                 } else {
1024                                         e = false;
1025                            }
1026
1027                                 if (e) {
1028                                         if (!unread_only || (unread_only && e.className != "feed" &&
1029                                                         e.className != "error"))        {
1030                                                 return e.id.replace("FEEDR-", "");
1031                                         }
1032                                 }
1033                         }
1034
1035                 } else if (direction == "prev") {
1036
1037                         var e = feed;
1038
1039                         while (e) {
1040
1041                                 if (e.previousSibling) {
1042
1043                                         e = e.previousSibling;
1044
1045                                 } else if (e.parentNode.parentNode.previousSibling) {
1046
1047                                         var this_cat = e.parentNode.parentNode;
1048
1049                                         e = false;
1050
1051                                         if (this_cat && this_cat.previousSibling) {
1052                                                 while (!e && this_cat.previousSibling) {
1053                                                         this_cat = this_cat.previousSibling;
1054                                                         if (this_cat.id == "feedCatHolder") {
1055                                                                 e = this_cat.firstChild.lastChild;
1056                                                         }
1057                                                 }
1058                                         }
1059
1060                                 } else {
1061                                         e = false;
1062                            }
1063
1064                                 if (e) {
1065                                         if (!unread_only || (unread_only && e.className != "feed" &&
1066                                                         e.className != "error"))        {
1067                                                 return e.id.replace("FEEDR-", "");
1068                                         }
1069                                 }
1070                         }
1071                 }
1072         }
1073 }
1074
1075 function showBlockElement(id) {
1076         var elem = document.getElementById(id);
1077
1078         if (elem) {
1079                 elem.style.display = "block";
1080         } else {
1081                 alert("[showBlockElement] can't find element with id " + id);
1082         }
1083 }
1084
1085 function hideParentElement(e) {
1086         e.parentNode.style.display = "none";
1087 }
1088
1089 function dropboxSelect(e, v) {
1090         for (i = 0; i < e.length; i++) {
1091                 if (e[i].value == v) {
1092                         e.selectedIndex = i;
1093                         break;
1094                 }
1095         }
1096 }
1097
1098 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1099 // bugfixed just a little bit :-)
1100 function getURLParam(strParamName){
1101   var strReturn = "";
1102   var strHref = window.location.href;
1103
1104   if (strHref.indexOf("#") == strHref.length-1) {
1105                 strHref = strHref.substring(0, strHref.length-1);
1106   }
1107
1108   if ( strHref.indexOf("?") > -1 ){
1109     var strQueryString = strHref.substr(strHref.indexOf("?"));
1110     var aQueryString = strQueryString.split("&");
1111     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1112       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1113         var aParam = aQueryString[iParam].split("=");
1114         strReturn = aParam[1];
1115         break;
1116       }
1117     }
1118   }
1119   return strReturn;
1120 }
1121
1122 function leading_zero(p) {
1123         var s = String(p);
1124         if (s.length == 1) s = "0" + s;
1125         return s;
1126 }
1127
1128 function closeInfoBox(cleanup) {
1129         var box = document.getElementById('infoBox');
1130         var shadow = document.getElementById('infoBoxShadow');
1131
1132         if (shadow) {
1133                 shadow.style.display = "none";
1134         } else if (box) {
1135                 box.style.display = "none";
1136         }
1137
1138         if (cleanup) box.innerHTML = "&nbsp;";
1139
1140         enableHotkeys();
1141
1142         return false;
1143 }
1144
1145
1146 function displayDlg(id, param) {
1147
1148         if (!xmlhttp_ready(xmlhttp)) {
1149                 printLockingError();
1150                 return
1151         }
1152
1153         notify("");
1154
1155         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1156                 param_escape(id) + "&param=" + param_escape(param), true);
1157         xmlhttp.onreadystatechange=infobox_callback;
1158         xmlhttp.send(null);
1159
1160         disableHotkeys();
1161
1162         return false;
1163 }
1164
1165 function infobox_submit_callback() {
1166         if (xmlhttp.readyState == 4) {
1167                 closeInfoBox();
1168
1169                 // called from prefs, reload tab
1170                 if (active_tab) {
1171                         selectTab(active_tab, false);
1172                 }
1173
1174                 notify(xmlhttp.responseText);
1175
1176         }
1177 }
1178
1179 function infobox_callback() {
1180         if (xmlhttp.readyState == 4) {
1181                 var box = document.getElementById('infoBox');
1182                 var shadow = document.getElementById('infoBoxShadow');
1183                 if (box) {
1184                         box.innerHTML=xmlhttp.responseText;
1185                         if (shadow) {
1186                                 shadow.style.display = "block";
1187                         } else {
1188                                 box.style.display = "block";
1189                         }
1190                 }
1191         }
1192 }
1193
1194 function qaddFilter() {
1195
1196         if (!xmlhttp_ready(xmlhttp)) {
1197                 printLockingError();
1198                 return
1199         }
1200
1201         var query = Form.serialize("filter_add_form");
1202
1203         xmlhttp.open("GET", "backend.php?" + query, true);
1204         xmlhttp.onreadystatechange=infobox_submit_callback;
1205         xmlhttp.send(null);
1206
1207         return true;
1208 }
1209
1210 function toggleSubmitNotEmpty(e, submit_id) {
1211         try {
1212                 document.getElementById(submit_id).disabled = (e.value == "")
1213         } catch (e) {
1214                 exception_error("toggleSubmitNotEmpty", e);
1215         }
1216 }
1217
1218 function isValidURL(s) {
1219         return s.match("http://") != null || s.match("https://") != null;
1220 }
1221
1222 function qafAdd() {
1223
1224         if (!xmlhttp_ready(xmlhttp)) {
1225                 printLockingError();
1226                 return
1227         }
1228
1229         notify("Adding feed...");
1230
1231         closeInfoBox();
1232
1233         var feeds_doc = getFeedsContext().document;
1234
1235         feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1236
1237         var query = Form.serialize("feed_add_form");
1238
1239         xmlhttp.open("GET", "backend.php?" + query, true);
1240         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1241         xmlhttp.send(null);
1242 }
1243
1244 function filterCR(e)
1245 {
1246      var key;
1247
1248      if(window.event)
1249           key = window.event.keyCode;     //IE
1250      else
1251           key = e.which;     //firefox
1252
1253      if(key == 13)
1254           return false;
1255      else
1256           return true;
1257 }
1258
1259 function getMainContext() {
1260         if (parent.window != window) {
1261                 return parent.window;
1262         } else {
1263                 return this.window;
1264         }
1265 }
1266
1267 function getFeedsContext() {
1268         try {
1269                 return getMainContext().frames["feeds-frame"];
1270         } catch (e) {
1271                 exception_error("getFeedsContext", e);
1272         }
1273 }
1274
1275
1276 function getHeadlinesContext() {
1277         try {
1278                 return getMainContext().frames["headlines-frame"];
1279         } catch (e) {
1280                 exception_error("getHeadlinesContext", e);
1281         }
1282 }
1283
1284 var debug_last_class = "even";
1285
1286 function debug(msg) {
1287         var ctx = getMainContext();
1288
1289         if (ctx.debug_last_class == "even") {
1290                 ctx.debug_last_class = "odd";
1291         } else {
1292                 ctx.debug_last_class = "even";
1293         }
1294
1295         var c = ctx.document.getElementById('debug_output');
1296         if (c && c.style.display == "block") {
1297                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1298                         c.removeChild(c.lastChild);
1299                 }
1300
1301                 var d = new Date();
1302                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1303                         ":" + leading_zero(d.getSeconds());
1304                 c.innerHTML = "<li class=\"" + ctx.debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1305                         msg + "</li>" + c.innerHTML;
1306         }
1307 }
1308
1309 function getInitParam(key) {
1310         return getMainContext().init_params[key];
1311 }
1312
1313 function storeInitParam(key, value, is_client) {
1314         try {
1315                 if (!is_client) {
1316                         if (getMainContext().init_params[key] != value) {
1317                                 debug("storeInitParam: " + key + " => " + value);
1318                                 //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1319                                 //      param_escape(key) + "&value=" + param_escape(value));
1320                                 var f = getMainContext().document.getElementById("backReqBox");
1321                                 f.src = "backend.php?op=rpc&subop=storeParam&key=" +
1322                                         param_escape(key) + "&value=" + param_escape(value);
1323                         }
1324                 }
1325                 getMainContext().init_params[key] = value;
1326         } catch (e) {
1327                 exception_error("storeInitParam", e);
1328         }
1329 }
1330
1331 /*
1332 function storeInitParams(params, is_client) {
1333         try {
1334                 var s = "";
1335
1336                 for (k in params) {
1337                         if (getMainContext().init_params[k] != params[k]) {
1338                                 s += k + "=" + params[k] + ";";
1339                                 getMainContext().init_params[k] = params[k];
1340                         }
1341                 }
1342
1343                 debug("storeInitParams: " + s);
1344
1345                 if (!is_client) {
1346                         new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
1347                 }
1348         } catch (e) {
1349                 exception_error("storeInitParams", e);
1350         }
1351 }*/
1352
1353 function fatalError(code, message) {
1354         try {
1355                 var fe = document.getElementById("fatal_error");
1356                 var fc = document.getElementById("fatal_error_msg");
1357
1358                 fc.innerHTML = "Code " + code + ": " + message;
1359
1360                 fe.style.display = "block";
1361
1362         } catch (e) {
1363                 exception_error("fatalError", e);
1364         }
1365 }
1366
1367 function getFeedName(id, is_cat) {
1368         var d = getFeedsContext().document;
1369
1370         var e;
1371
1372         if (is_cat) {
1373                 e = d.getElementById("FCATN-" + id);
1374         } else {
1375                 e = d.getElementById("FEEDN-" + id);
1376         }
1377         if (e) {
1378                 return e.innerHTML.stripTags();
1379         } else {
1380                 return null;
1381         }
1382 }