functions.js

   1 var hotkeys_enabled = true;
   2 var xmlhttp_rpc = Ajax.getTransport();
   3 var notify_silent = false;
   4 var last_progress_point = 0;
   5 var async_counters_work = false;
   6
   7 /* add method to remove element from array */
   8
   9 Array.prototype.remove = function(s) {
  10         for (var i=0; i < this.length; i++) {
  11                 if (s == this[i]) this.splice(i, 1);
  12         }
  13 }
  14
  15 function is_opera() {
  16         return window.opera;
  17 }
  18
  19 function exception_error(location, e, silent) {
  20         var msg;
  21
  22         if (e.fileName) {
  23                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  24
  25                 msg = "Exception: " + e.name + ", " + e.message +
  26                         "\nFunction: " + location + "()" +
  27                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  28
  29         } else if (e.description) {
  30                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  31         } else {
  32                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  33         }
  34
  35         debug("<b>EXCEPTION: " + msg + "</b>");
  36
  37         if (!silent) {
  38                 alert(msg);
  39         }
  40 }
  41
  42 function disableHotkeys() {
  43         hotkeys_enabled = false;
  44 }
  45
  46 function enableHotkeys() {
  47         hotkeys_enabled = true;
  48 }
  49
  50 function xmlhttp_ready(obj) {
  51         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  52 }
  53
  54 function open_article_callback(transport) {
  55         try {
  56
  57                 if (transport.responseXML) {
  58
  59                         var link = transport.responseXML.getElementsByTagName("link")[0];
  60                         var id = transport.responseXML.getElementsByTagName("id")[0];
  61
  62                         debug("open_article_callback, received link: " + link);
  63
  64                         if (link && id) {
  65
  66                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
  67
  68                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
  69
  70                                 var w = window.open(link.firstChild.nodeValue, wname);
  71
  72                                 if (!w) { notify_error("Failed to load article in new window"); }
  73
  74                                 if (id) {
  75                                         id = id.firstChild.nodeValue;
  76                                         if (!document.getElementById("headlinesList")) {
  77                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
  78                                         }
  79                                 }
  80                         } else {
  81                                 notify_error("Can't open article: received invalid article link");
  82                         }
  83                 } else {
  84                         notify_error("Can't open article: received invalid XML");
  85                 }
  86
  87         } catch (e) {
  88                 exception_error("open_article_callback", e);
  89         }
  90 }
  91
  92 function param_escape(arg) {
  93         if (typeof encodeURIComponent != 'undefined')
  94                 return encodeURIComponent(arg);
  95         else
  96                 return escape(arg);
  97 }
  98
  99 function param_unescape(arg) {
 100         if (typeof decodeURIComponent != 'undefined')
 101                 return decodeURIComponent(arg);
 102         else
 103                 return unescape(arg);
 104 }
 105
 106 function delay(gap) {
 107         var then,now;
 108         then=new Date().getTime();
 109         now=then;
 110         while((now-then)<gap) {
 111                 now=new Date().getTime();
 112         }
 113 }
 114
 115 var notify_hide_timerid = false;
 116
 117 function hide_notify() {
 118         var n = document.getElementById("notify");
 119         if (n) {
 120                 n.style.display = "none";
 121         }
 122 }
 123
 124 function notify_silent_next() {
 125         notify_silent = true;
 126 }
 127
 128 function notify_real(msg, no_hide, n_type) {
 129
 130         if (notify_silent) {
 131                 notify_silent = false;
 132                 return;
 133         }
 134
 135         var n = document.getElementById("notify");
 136         var nb = document.getElementById("notify_body");
 137
 138         if (!n || !nb) return;
 139
 140         if (notify_hide_timerid) {
 141                 window.clearTimeout(notify_hide_timerid);
 142         }
 143
 144         if (msg == "") {
 145                 if (n.style.display == "block") {
 146                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 147                 }
 148                 return;
 149         } else {
 150                 n.style.display = "block";
 151         }
 152
 153         /* types:
 154
 155                 1 - generic
 156                 2 - progress
 157                 3 - error
 158                 4 - info
 159
 160         */
 161
 162         if (typeof __ != 'undefined') {
 163                 msg = __(msg);
 164         }
 165
 166         if (n_type == 1) {
 167                 n.className = "notify";
 168         } else if (n_type == 2) {
 169                 n.className = "notifyProgress";
 170                 msg = "<img src='images/indicator_white.gif'> " + msg;
 171         } else if (n_type == 3) {
 172                 n.className = "notifyError";
 173                 msg = "<img src='images/sign_excl.gif'> " + msg;
 174         } else if (n_type == 4) {
 175                 n.className = "notifyInfo";
 176                 msg = "<img src='images/sign_info.gif'> " + msg;
 177         }
 178
 179 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 180
 181         nb.innerHTML = msg;
 182
 183         if (!no_hide) {
 184                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 185         }
 186 }
 187
 188 function notify(msg, no_hide) {
 189         notify_real(msg, no_hide, 1);
 190 }
 191
 192 function notify_progress(msg, no_hide) {
 193         notify_real(msg, no_hide, 2);
 194 }
 195
 196 function notify_error(msg, no_hide) {
 197         notify_real(msg, no_hide, 3);
 198
 199 }
 200
 201 function notify_info(msg, no_hide) {
 202         notify_real(msg, no_hide, 4);
 203 }
 204
 205 function printLockingError() {
 206         notify_info("Please wait until operation finishes.");
 207 }
 208
 209 function cleanSelected(element) {
 210         var content = document.getElementById(element);
 211
 212         for (i = 0; i < content.rows.length; i++) {
 213                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 214         }
 215 }
 216
 217 function getVisibleUnreadHeadlines() {
 218         var content = document.getElementById("headlinesList");
 219
 220         var rows = new Array();
 221
 222         if (!content) return rows;
 223
 224         for (i = 0; i < content.rows.length; i++) {
 225                 var row_id = content.rows[i].id.replace("RROW-", "");
 226                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 227                                 rows.push(row_id);
 228                 }
 229         }
 230         return rows;
 231 }
 232
 233 function getVisibleHeadlineIds() {
 234
 235         var content = document.getElementById("headlinesList");
 236
 237         var rows = new Array();
 238
 239         if (!content) return rows;
 240
 241         for (i = 0; i < content.rows.length; i++) {
 242                 var row_id = content.rows[i].id.replace("RROW-", "");
 243                 if (row_id.length > 0) {
 244                                 rows.push(row_id);
 245                 }
 246         }
 247         return rows;
 248 }
 249
 250 function getFirstVisibleHeadlineId() {
 251         if (isCdmMode()) {
 252                 var rows = cdmGetVisibleArticles();
 253                 return rows[0];
 254         } else {
 255                 var rows = getVisibleHeadlineIds();
 256                 return rows[0];
 257         }
 258 }
 259
 260 function getLastVisibleHeadlineId() {
 261         if (isCdmMode()) {
 262                 var rows = cdmGetVisibleArticles();
 263                 return rows[rows.length-1];
 264         } else {
 265                 var rows = getVisibleHeadlineIds();
 266                 return rows[rows.length-1];
 267         }
 268 }
 269
 270 function markHeadline(id) {
 271         var row = document.getElementById("RROW-" + id);
 272         if (row) {
 273                 var is_active = false;
 274
 275                 if (row.className.match("Active")) {
 276                         is_active = true;
 277                 }
 278                 row.className = row.className.replace("Selected", "");
 279                 row.className = row.className.replace("Active", "");
 280                 row.className = row.className.replace("Insensitive", "");
 281
 282                 if (is_active) {
 283                         row.className = row.className = "Active";
 284                 }
 285
 286                 var check = document.getElementById("RCHK-" + id);
 287
 288                 if (check) {
 289                         check.checked = true;
 290                 }
 291
 292                 row.className = row.className + "Selected";
 293
 294         }
 295 }
 296
 297 function getFeedIds() {
 298         var content = document.getElementById("feedsList");
 299
 300         var rows = new Array();
 301
 302         for (i = 0; i < content.rows.length; i++) {
 303                 var id = content.rows[i].id.replace("FEEDR-", "");
 304                 if (id.length > 0) {
 305                         rows.push(id);
 306                 }
 307         }
 308
 309         return rows;
 310 }
 311
 312 function setCookie(name, value, lifetime, path, domain, secure) {
 313
 314         var d = false;
 315
 316         if (lifetime) {
 317                 d = new Date();
 318                 d.setTime(d.getTime() + (lifetime * 1000));
 319         }
 320
 321         debug("setCookie: " + name + " => " + value + ": " + d);
 322
 323         int_setCookie(name, value, d, path, domain, secure);
 324
 325 }
 326
 327 function int_setCookie(name, value, expires, path, domain, secure) {
 328         document.cookie= name + "=" + escape(value) +
 329                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 330                 ((path) ? "; path=" + path : "") +
 331                 ((domain) ? "; domain=" + domain : "") +
 332                 ((secure) ? "; secure" : "");
 333 }
 334
 335 function delCookie(name, path, domain) {
 336         if (getCookie(name)) {
 337                 document.cookie = name + "=" +
 338                 ((path) ? ";path=" + path : "") +
 339                 ((domain) ? ";domain=" + domain : "" ) +
 340                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 341         }
 342 }
 343
 344
 345 function getCookie(name) {
 346
 347         var dc = document.cookie;
 348         var prefix = name + "=";
 349         var begin = dc.indexOf("; " + prefix);
 350         if (begin == -1) {
 351             begin = dc.indexOf(prefix);
 352             if (begin != 0) return null;
 353         }
 354         else {
 355             begin += 2;
 356         }
 357         var end = document.cookie.indexOf(";", begin);
 358         if (end == -1) {
 359             end = dc.length;
 360         }
 361         return unescape(dc.substring(begin + prefix.length, end));
 362 }
 363
 364 function disableContainerChildren(id, disable, doc) {
 365
 366         if (!doc) doc = document;
 367
 368         var container = doc.getElementById(id);
 369
 370         if (!container) {
 371                 //alert("disableContainerChildren: element " + id + " not found");
 372                 return;
 373         }
 374
 375         for (var i = 0; i < container.childNodes.length; i++) {
 376                 var child = container.childNodes[i];
 377
 378                 try {
 379                         child.disabled = disable;
 380                 } catch (E) {
 381
 382                 }
 383
 384                 if (disable) {
 385                         if (child.className && child.className.match("button")) {
 386                                 child.className = "disabledButton";
 387                         }
 388                 } else {
 389                         if (child.className && child.className.match("disabledButton")) {
 390                                 child.className = "button";
 391                         }
 392                 }
 393         }
 394
 395 }
 396
 397 function gotoPreferences() {
 398         document.location.href = "prefs.php";
 399 }
 400
 401 function gotoMain() {
 402         document.location.href = "tt-rss.php";
 403 }
 404
 405 function gotoExportOpml() {
 406         document.location.href = "opml.php?op=Export";
 407 }
 408
 409 function parse_counters(reply, scheduled_call) {
 410         try {
 411
 412                 var feeds_found = 0;
 413
 414                 var elems = reply.getElementsByTagName("counter");
 415
 416                 for (var l = 0; l < elems.length; l++) {
 417
 418                         var id = elems[l].getAttribute("id");
 419                         var t = elems[l].getAttribute("type");
 420                         var ctr = elems[l].getAttribute("counter");
 421                         var error = elems[l].getAttribute("error");
 422                         var has_img = elems[l].getAttribute("hi");
 423                         var updated = elems[l].getAttribute("updated");
 424                         var title = elems[l].getAttribute("title");
 425                         var xmsg = elems[l].getAttribute("xmsg");
 426
 427                         if (id == "global-unread") {
 428                                 global_unread = ctr;
 429                                 updateTitle();
 430                                 continue;
 431                         }
 432
 433                         if (id == "subscribed-feeds") {
 434                                 feeds_found = ctr;
 435                                 continue;
 436                         }
 437
 438                         if (t == "category") {
 439                                 var catctr = document.getElementById("FCATCTR-" + id);
 440                                 if (catctr) {
 441                                         catctr.innerHTML = "(" + ctr + ")";
 442                                         if (ctr > 0) {
 443                                                 catctr.className = "catCtrHasUnread";
 444                                         } else {
 445                                                 catctr.className = "catCtrNoUnread";
 446                                         }
 447                                 }
 448                                 continue;
 449                         }
 450
 451                         var feedctr = document.getElementById("FEEDCTR-" + id);
 452                         var feedu = document.getElementById("FEEDU-" + id);
 453                         var feedr = document.getElementById("FEEDR-" + id);
 454                         var feed_img = document.getElementById("FIMG-" + id);
 455                         var feedlink = document.getElementById("FEEDL-" + id);
 456                         var feedupd = document.getElementById("FLUPD-" + id);
 457
 458                         if (updated && feedlink) {
 459                                 if (error) {
 460                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 461                                 } else {
 462                                         feedlink.title = "Updated: " + updated;
 463                                 }
 464                         }
 465
 466                         if (feedupd) {
 467                                 if (!updated) updated = "";
 468
 469                                 if (error) {
 470                                         if (xmsg) {
 471                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 472                                         } else {
 473                                                 feedupd.innerHTML = updated + " (Error)";
 474                                         }
 475                                 } else {
 476                                         if (xmsg) {
 477                                                 feedupd.innerHTML = updated + " " + xmsg;
 478                                         } else {
 479                                                 feedupd.innerHTML = updated;
 480                                         }
 481                                 }
 482                         }
 483
 484                         if (has_img && feed_img) {
 485                                 if (!feed_img.src.match(id + ".ico")) {
 486                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 487                                 }
 488                         }
 489
 490                         if (feedlink && title) {
 491                                 feedlink.innerHTML = title;
 492                         }
 493
 494                         if (feedctr && feedu && feedr) {
 495
 496                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 497                                         viewCurrentFeed();
 498                                 }
 499
 500                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 501
 502                                 feedu.innerHTML = ctr;
 503
 504                                 if (error) {
 505                                         feedr.className = feedr.className.replace("feed", "error");
 506                                 } else if (id > 0) {
 507                                         feedr.className = feedr.className.replace("error", "feed");
 508                                 }
 509
 510                                 if (ctr > 0) {
 511                                         feedctr.className = "feedCtrHasUnread";
 512                                         if (!feedr.className.match("Unread")) {
 513                                                 var is_selected = feedr.className.match("Selected");
 514
 515                                                 feedr.className = feedr.className.replace("Selected", "");
 516                                                 feedr.className = feedr.className.replace("Unread", "");
 517
 518                                                 feedr.className = feedr.className + "Unread";
 519
 520                                                 if (is_selected) {
 521                                                         feedr.className = feedr.className + "Selected";
 522                                                 }
 523
 524                                         }
 525
 526                                         if (row_needs_hl) {
 527                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 528                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 529                                         }
 530                                 } else {
 531                                         feedctr.className = "feedCtrNoUnread";
 532                                         feedr.className = feedr.className.replace("Unread", "");
 533                                 }
 534                         }
 535                 }
 536
 537                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 538
 539                 var feeds_stored = number_of_feeds;
 540
 541                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 542
 543                 if (feeds_stored != feeds_found) {
 544                         number_of_feeds = feeds_found;
 545
 546                         if (feeds_stored != 0 && feeds_found != 0) {
 547                                 debug("Subscribed feed number changed, refreshing feedlist");
 548                                 setTimeout('updateFeedList(false, false)', 50);
 549                         }
 550                 }
 551
 552         } catch (e) {
 553                 exception_error("parse_counters", e);
 554         }
 555 }
 556
 557 function parse_counters_reply(transport, scheduled_call) {
 558
 559         if (!transport.responseXML) {
 560                 notify_error("Backend did not return valid XML", true);
 561                 return;
 562         }
 563
 564         var reply = transport.responseXML.firstChild;
 565
 566         if (!reply) {
 567                 notify_error("Backend did not return expected XML object", true);
 568                 updateTitle("");
 569                 return;
 570         }
 571
 572         var error_code = false;
 573         var error_msg = false;
 574
 575         if (reply.firstChild) {
 576                 error_code = reply.firstChild.getAttribute("error-code");
 577                 error_msg = reply.firstChild.getAttribute("error-msg");
 578         }
 579
 580         if (!error_code) {
 581                 error_code = reply.getAttribute("error-code");
 582                 error_msg = reply.getAttribute("error-msg");
 583         }
 584
 585         if (error_code && error_code != 0) {
 586                 debug("refetch_callback: got error code " + error_code);
 587                 return fatalError(error_code, error_msg);
 588         }
 589
 590         var counters = reply.getElementsByTagName("counters")[0];
 591
 592         parse_counters(counters, scheduled_call);
 593
 594         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 595
 596         parse_runtime_info(runtime_info);
 597
 598         if (feedsSortByUnread()) {
 599                 resort_feedlist();
 600         }
 601
 602         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 603
 604 }
 605
 606 function all_counters_callback2(transport, async_call) {
 607         try {
 608                 if (async_call) async_counters_work = true;
 609
 610                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 611                 parse_counters_reply(transport);
 612                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 613
 614         } catch (e) {
 615                 exception_error("all_counters_callback2", e);
 616         }
 617 }
 618
 619 function get_feed_unread(id) {
 620         try {
 621                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 622         } catch (e) {
 623                 exception_error("get_feed_unread", e, true);
 624                 return -1;
 625         }
 626 }
 627
 628 function get_cat_unread(id) {
 629         try {
 630                 var ctr = document.getElementById("FCATCTR-" + id).innerHTML;
 631                 ctr = ctr.replace("(", "");
 632                 ctr = ctr.replace(")", "");
 633                 return parseInt(ctr);
 634         } catch (e) {
 635                 exception_error("get_feed_unread", e, true);
 636                 return -1;
 637         }
 638 }
 639
 640 function get_feed_entry_unread(elem) {
 641
 642         var id = elem.id.replace("FEEDR-", "");
 643
 644         if (id <= 0) {
 645                 return -1;
 646         }
 647
 648         try {
 649                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 650         } catch (e) {
 651                 return -1;
 652         }
 653 }
 654
 655 function get_feed_entry_name(elem) {
 656         var id = elem.id.replace("FEEDR-", "");
 657         return getFeedName(id);
 658 }
 659
 660
 661 function resort_category(node) {
 662
 663         try {
 664
 665                 debug("resort_category: " + node);
 666
 667                 var by_unread = feedsSortByUnread();
 668
 669                 var list = node.getElementsByTagName("LI");
 670
 671                 for (i = 0; i < list.length; i++) {
 672
 673                         for (j = i+1; j < list.length; j++) {
 674
 675                                 var tmp_val = get_feed_entry_unread(list[i]);
 676                                 var cur_val = get_feed_entry_unread(list[j]);
 677
 678                                 var tmp_name = get_feed_entry_name(list[i]);
 679                                 var cur_name = get_feed_entry_name(list[j]);
 680
 681                                 if ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name))) {
 682                                         tempnode_i = list[i].cloneNode(true);
 683                                         tempnode_j = list[j].cloneNode(true);
 684                                         node.replaceChild(tempnode_i, list[j]);
 685                                         node.replaceChild(tempnode_j, list[i]);
 686                                 }
 687                         }
 688                 }
 689
 690         } catch (e) {
 691                 exception_error("resort_category", e);
 692         }
 693
 694 }
 695
 696 function resort_feedlist() {
 697         debug("resort_feedlist");
 698
 699         if (document.getElementById("FCATLIST--1")) {
 700
 701                 var lists = document.getElementsByTagName("UL");
 702
 703                 for (var i = 0; i < lists.length; i++) {
 704                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 705                                 resort_category(lists[i]);
 706                         }
 707                 }
 708
 709         } else {
 710                 resort_category(document.getElementById("feedList"));
 711         }
 712 }
 713
 714 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 715   * * @author Sundar Dorai-Raj
 716   * * Email: sdoraira@vt.edu
 717   * * This program is free software; you can redistribute it and/or
 718   * * modify it under the terms of the GNU General Public License
 719   * * as published by the Free Software Foundation; either version 2
 720   * * of the License, or (at your option) any later version,
 721   * * provided that any use properly credits the author.
 722   * * This program is distributed in the hope that it will be useful,
 723   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 724   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 725   * * GNU General Public License for more details at http://www.gnu.org * * */
 726
 727   var numbers=".0123456789";
 728   function isNumeric(x) {
 729     // is x a String or a character?
 730     if(x.length>1) {
 731       // remove negative sign
 732       x=Math.abs(x)+"";
 733       for(j=0;j<x.length;j++) {
 734         // call isNumeric recursively for each character
 735         number=isNumeric(x.substring(j,j+1));
 736         if(!number) return number;
 737       }
 738       return number;
 739     }
 740     else {
 741       // if x is number return true
 742       if(numbers.indexOf(x)>=0) return true;
 743       return false;
 744     }
 745   }
 746
 747
 748 function hideOrShowFeeds(hide) {
 749
 750         try {
 751
 752         debug("hideOrShowFeeds: " + hide);
 753
 754         if (document.getElementById("FCATLIST--1")) {
 755
 756                 var lists = document.getElementsByTagName("UL");
 757
 758                 for (var i = 0; i < lists.length; i++) {
 759                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 760
 761                                 var id = lists[i].id.replace("FCATLIST-", "");
 762                                 hideOrShowFeedsCategory(id, hide);
 763                         }
 764                 }
 765
 766         } else {
 767                 hideOrShowFeedsCategory(null, hide);
 768         }
 769
 770         } catch (e) {
 771                 exception_error("hideOrShowFeeds", e);
 772         }
 773 }
 774
 775 function hideOrShowFeedsCategory(id, hide) {
 776
 777         try {
 778
 779                 var node = null;
 780                 var cat_node = null;
 781
 782                 if (id) {
 783                         node = document.getElementById("FCATLIST-" + id);
 784                         cat_node = document.getElementById("FCAT-" + id);
 785                 } else {
 786                         node = document.getElementById("feedList"); // no categories
 787                 }
 788
 789         //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 790
 791                 var cat_unread = 0;
 792
 793                 if (!node) {
 794                         debug("hideOrShowFeeds: passed node is null, aborting");
 795                         return;
 796                 }
 797
 798         //      debug("cat: " + node.id);
 799
 800                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 801                         for (i = 0; i < node.childNodes.length; i++) {
 802                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 803
 804                                 if (node.childNodes[i].style != undefined) {
 805
 806                                         var has_unread = (node.childNodes[i].className != "feed" &&
 807                                                 node.childNodes[i].className != "label" &&
 808                                                 !(!getInitParam("hide_read_shows_special") &&
 809                                                         node.childNodes[i].className == "virt") &&
 810                                                 node.childNodes[i].className != "error" &&
 811                                                 node.childNodes[i].className != "tag");
 812
 813         //                              debug(node.childNodes[i].id + " --> " + has_unread);
 814
 815                                         if (hide && !has_unread) {
 816                                                 //node.childNodes[i].style.display = "none";
 817                                                 var id = node.childNodes[i].id;
 818                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 819                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 820                                         }
 821
 822                                         if (!hide) {
 823                                                 node.childNodes[i].style.display = "list-item";
 824                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 825                                         }
 826
 827                                         if (has_unread) {
 828                                                 node.childNodes[i].style.display = "list-item";
 829                                                 cat_unread++;
 830                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 831                                                 //Effect.Highlight(node.childNodes[i]);
 832                                         }
 833                                 }
 834                         }
 835                 }
 836
 837         //      debug("end cat: " + node.id + " unread " + cat_unread);
 838
 839                 if (cat_unread == 0) {
 840                         if (cat_node.style == undefined) {
 841                                 debug("ERROR: supplied cat_node " + cat_node +
 842                                         " has no styles. WTF?");
 843                                 return;
 844                         }
 845                         if (hide) {
 846                                 //cat_node.style.display = "none";
 847                                 Effect.Fade(cat_node, {duration : 0.3,
 848                                         queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 849                         } else {
 850                                 cat_node.style.display = "list-item";
 851                         }
 852                 } else {
 853                         try {
 854                                 cat_node.style.display = "list-item";
 855                         } catch (e) {
 856                                 debug(e);
 857                         }
 858                 }
 859
 860 //      debug("unread for category: " + cat_unread);
 861
 862         } catch (e) {
 863                 exception_error("hideOrShowFeedsCategory", e);
 864         }
 865 }
 866
 867 function selectTableRow(r, do_select) {
 868         r.className = r.className.replace("Selected", "");
 869
 870         if (do_select) {
 871                 r.className = r.className + "Selected";
 872         }
 873 }
 874
 875 function selectTableRowById(elem_id, check_id, do_select) {
 876
 877         try {
 878
 879                 var row = document.getElementById(elem_id);
 880
 881                 if (row) {
 882                         selectTableRow(row, do_select);
 883                 }
 884
 885                 var check = document.getElementById(check_id);
 886
 887                 if (check) {
 888                         check.checked = do_select;
 889                 }
 890         } catch (e) {
 891                 exception_error("selectTableRowById", e);
 892         }
 893 }
 894
 895 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 896         classcheck, reset_others) {
 897
 898         var content = document.getElementById(content_id);
 899
 900         if (!content) {
 901                 alert("[selectTableRows] Element " + content_id + " not found.");
 902                 return;
 903         }
 904
 905         for (i = 0; i < content.rows.length; i++) {
 906                 if (Element.visible(content.rows[i])) {
 907                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 908
 909                                 if (content.rows[i].id.match(prefix)) {
 910                                         selectTableRow(content.rows[i], do_select);
 911
 912                                         var row_id = content.rows[i].id.replace(prefix, "");
 913                                         var check = document.getElementById(check_prefix + row_id);
 914
 915                                         if (check) {
 916                                                 check.checked = do_select;
 917                                         }
 918                                 } else if (reset_others) {
 919                                         selectTableRow(content.rows[i], false);
 920
 921                                         var row_id = content.rows[i].id.replace(prefix, "");
 922                                         var check = document.getElementById(check_prefix + row_id);
 923
 924                                         if (check) {
 925                                                 check.checked = false;
 926                                         }
 927
 928                                 }
 929                         } else if (reset_others) {
 930                                 selectTableRow(content.rows[i], false);
 931
 932                                 var row_id = content.rows[i].id.replace(prefix, "");
 933                                 var check = document.getElementById(check_prefix + row_id);
 934
 935                                 if (check) {
 936                                         check.checked = false;
 937                                 }
 938
 939                         }
 940                 }
 941         }
 942 }
 943
 944 function getSelectedTableRowIds(content_id, prefix) {
 945
 946         var content = document.getElementById(content_id);
 947
 948         if (!content) {
 949                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 950                 return;
 951         }
 952
 953         var sel_rows = new Array();
 954
 955         for (i = 0; i < content.rows.length; i++) {
 956                 if (content.rows[i].id.match(prefix) &&
 957                                 content.rows[i].className.match("Selected")) {
 958
 959                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 960                         sel_rows.push(row_id);
 961                 }
 962         }
 963
 964         return sel_rows;
 965
 966 }
 967
 968 function toggleSelectRowById(sender, id) {
 969         var row = document.getElementById(id);
 970
 971         if (sender.checked) {
 972                 if (!row.className.match("Selected")) {
 973                         row.className = row.className + "Selected";
 974                 }
 975         } else {
 976                 if (row.className.match("Selected")) {
 977                         row.className = row.className.replace("Selected", "");
 978                 }
 979         }
 980 }
 981
 982 function toggleSelectListRow(sender) {
 983         var parent_row = sender.parentNode;
 984
 985         if (sender.checked) {
 986                 if (!parent_row.className.match("Selected")) {
 987                         parent_row.className = parent_row.className + "Selected";
 988                 }
 989         } else {
 990                 if (parent_row.className.match("Selected")) {
 991                         parent_row.className = parent_row.className.replace("Selected", "");
 992                 }
 993         }
 994 }
 995
 996 function tSR(sender) {
 997         return toggleSelectRow(sender);
 998 }
 999
1000 function toggleSelectRow(sender) {
1001         var parent_row = sender.parentNode.parentNode;
1002
1003         if (sender.checked) {
1004                 if (!parent_row.className.match("Selected")) {
1005                         parent_row.className = parent_row.className + "Selected";
1006                 }
1007         } else {
1008                 if (parent_row.className.match("Selected")) {
1009                         parent_row.className = parent_row.className.replace("Selected", "");
1010                 }
1011         }
1012 }
1013
1014 function getNextUnreadCat(id) {
1015         try {
1016                 var rows = document.getElementById("feedList").getElementsByTagName("LI");
1017                 var feeds = new Array();
1018
1019                 var unread_only = true;
1020                 var is_cat = true;
1021
1022                 for (var i = 0; i < rows.length; i++) {
1023                         if (rows[i].id.match("FCAT-")) {
1024                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1025
1026                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1027
1028                                         if (cat_id >= 0) {
1029                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1030                                                         feeds.push(cat_id);
1031                                                 }
1032                                         }
1033                                 }
1034                         }
1035                 }
1036
1037                 var idx = feeds.indexOf(id);
1038                 if (idx != -1 && idx < feeds.length) {
1039                         return feeds[idx+1];
1040                 } else {
1041                         return feeds.shift();
1042                 }
1043
1044         } catch (e) {
1045                 exception_error("getNextUnreadCat", e);
1046         }
1047 }
1048
1049 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1050         try {
1051
1052 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1053
1054                 var rows = document.getElementById("feedList").getElementsByTagName("LI");
1055                 var feeds = new Array();
1056
1057                 for (var i = 0; i < rows.length; i++) {
1058                         if (rows[i].id.match("FEEDR-")) {
1059
1060                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1061
1062                                         if (!unread_only ||
1063                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1064                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1065                                         }
1066                                 }
1067                         }
1068
1069                         if (rows[i].id.match("FCAT-")) {
1070                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1071
1072                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1073
1074                                         if (cat_id >= 0) {
1075                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1076                                                         feeds.push("CAT:"+cat_id);
1077                                                 }
1078                                         }
1079                                 }
1080                         }
1081                 }
1082
1083 //              alert(feeds.toString());
1084
1085                 if (!id) {
1086                         if (direction == "next") {
1087                                 return feeds.shift();
1088                         } else {
1089                                 return feeds.pop();
1090                         }
1091                 } else {
1092                         if (direction == "next") {
1093                                 if (is_cat) id = "CAT:" + id;
1094                                 var idx = feeds.indexOf(id);
1095                                 if (idx != -1 && idx < feeds.length) {
1096                                         return feeds[idx+1];
1097                                 } else {
1098                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1099                                 }
1100                         } else {
1101                                 if (is_cat) id = "CAT:" + id;
1102                                 var idx = feeds.indexOf(id);
1103                                 if (idx > 0) {
1104                                         return feeds[idx-1];
1105                                 } else {
1106                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1107                                 }
1108                         }
1109
1110                 }
1111
1112         } catch (e) {
1113                 exception_error("getRelativeFeedId2", e);
1114         }
1115 }
1116
1117
1118 function getRelativeFeedId(list, id, direction, unread_only) {
1119         var rows = list.getElementsByTagName("LI");
1120         var feeds = new Array();
1121
1122         for (var i = 0; i < rows.length; i++) {
1123                 if (rows[i].id.match("FEEDR-")) {
1124
1125                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1126
1127                                 if (!unread_only ||
1128                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1129                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1130                                 }
1131                         }
1132                 }
1133         }
1134
1135         if (!id) {
1136                 if (direction == "next") {
1137                         return feeds.shift();
1138                 } else {
1139                         return feeds.pop();
1140                 }
1141         } else {
1142                 if (direction == "next") {
1143                         var idx = feeds.indexOf(id);
1144                         if (idx != -1 && idx < feeds.length) {
1145                                 return feeds[idx+1];
1146                         } else {
1147                                 return getRelativeFeedId(list, false, direction, unread_only);
1148                         }
1149                 } else {
1150                         var idx = feeds.indexOf(id);
1151                         if (idx > 0) {
1152                                 return feeds[idx-1];
1153                         } else {
1154                                 return getRelativeFeedId(list, false, direction, unread_only);
1155                         }
1156                 }
1157
1158         }
1159 }
1160
1161 function showBlockElement(id, h_id) {
1162         var elem = document.getElementById(id);
1163
1164         if (elem) {
1165                 elem.style.display = "block";
1166
1167                 if (h_id) {
1168                         elem = document.getElementById(h_id);
1169                         if (elem) {
1170                                 elem.style.display = "none";
1171                         }
1172                 }
1173         } else {
1174                 alert("[showBlockElement] can't find element with id " + id);
1175         }
1176 }
1177
1178 function appearBlockElement_afh(effect) {
1179
1180 }
1181
1182 function checkboxToggleElement(elem, id) {
1183         if (elem.checked) {
1184                 Effect.Appear(id, {duration : 0.5});
1185         } else {
1186                 Effect.Fade(id, {duration : 0.5});
1187         }
1188 }
1189
1190 function appearBlockElement(id, h_id) {
1191
1192         try {
1193                 if (h_id) {
1194                         Effect.Fade(h_id);
1195                 }
1196                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1197         } catch (e) {
1198                 exception_error("appearBlockElement", e);
1199         }
1200
1201 }
1202
1203 function hideParentElement(e) {
1204         e.parentNode.style.display = "none";
1205 }
1206
1207 function dropboxSelect(e, v) {
1208         for (i = 0; i < e.length; i++) {
1209                 if (e[i].value == v) {
1210                         e.selectedIndex = i;
1211                         break;
1212                 }
1213         }
1214 }
1215
1216 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1217 // bugfixed just a little bit :-)
1218 function getURLParam(strParamName){
1219   var strReturn = "";
1220   var strHref = window.location.href;
1221
1222   if (strHref.indexOf("#") == strHref.length-1) {
1223                 strHref = strHref.substring(0, strHref.length-1);
1224   }
1225
1226   if ( strHref.indexOf("?") > -1 ){
1227     var strQueryString = strHref.substr(strHref.indexOf("?"));
1228     var aQueryString = strQueryString.split("&");
1229     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1230       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1231         var aParam = aQueryString[iParam].split("=");
1232         strReturn = aParam[1];
1233         break;
1234       }
1235     }
1236   }
1237   return strReturn;
1238 }
1239
1240 function leading_zero(p) {
1241         var s = String(p);
1242         if (s.length == 1) s = "0" + s;
1243         return s;
1244 }
1245
1246 function closeInfoBox(cleanup) {
1247
1248         Element.hide("dialog_overlay");
1249
1250         var box = document.getElementById('infoBox');
1251         var shadow = document.getElementById('infoBoxShadow');
1252
1253         if (shadow) {
1254                 shadow.style.display = "none";
1255         } else if (box) {
1256                 box.style.display = "none";
1257         }
1258
1259         if (cleanup) box.innerHTML = "&nbsp;";
1260
1261         enableHotkeys();
1262
1263         return false;
1264 }
1265
1266
1267 function displayDlg(id, param) {
1268
1269         notify_progress("Loading, please wait...", true);
1270
1271         disableHotkeys();
1272
1273         var query = "backend.php?op=dlg&id=" +
1274                 param_escape(id) + "&param=" + param_escape(param);
1275
1276         new Ajax.Request(query, {
1277                 onComplete: function (transport) {
1278                         infobox_callback2(transport);
1279                 } });
1280
1281         return false;
1282 }
1283
1284 function infobox_submit_callback2(transport) {
1285         closeInfoBox();
1286
1287         try {
1288                 // called from prefs, reload tab
1289                 if (typeof active_tab != 'undefined' && active_tab) {
1290                         selectTab(active_tab, false);
1291                 }
1292         } catch (e) { }
1293
1294         if (transport.responseText) {
1295                 notify_info(transport.responseText);
1296         }
1297 }
1298
1299 function infobox_callback2(transport) {
1300         try {
1301
1302                 debug("infobox_callback2");
1303
1304                 if (!getInitParam("infobox_disable_overlay")) {
1305                         Element.show("dialog_overlay");
1306                 }
1307
1308                 var box = document.getElementById('infoBox');
1309                 var shadow = document.getElementById('infoBoxShadow');
1310                 if (box) {
1311
1312                         box.innerHTML=transport.responseText;
1313                         if (shadow) {
1314                                 shadow.style.display = "block";
1315                         } else {
1316                                 box.style.display = "block";
1317                         }
1318                 }
1319
1320                 /* FIXME this needs to be moved out somewhere */
1321
1322                 if (document.getElementById("tags_choices")) {
1323                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1324                                 "backend.php?op=rpc&subop=completeTags",
1325                                 { tokens: ',', paramName: "search" });
1326                 }
1327
1328                 disableHotkeys();
1329
1330                 notify("");
1331         } catch (e) {
1332                 exception_error("infobox_callback2", e);
1333         }
1334 }
1335
1336 function createFilter() {
1337
1338         try {
1339
1340                 var form = document.forms['filter_add_form'];
1341                 var reg_exp = form.reg_exp.value;
1342
1343                 if (reg_exp == "") {
1344                         alert(__("Can't add filter: nothing to match on."));
1345                         return false;
1346                 }
1347
1348                 var query = Form.serialize("filter_add_form");
1349
1350                 // we can be called from some other tab in Prefs
1351                 if (typeof active_tab != 'undefined' && active_tab) {
1352                         active_tab = "filterConfig";
1353                 }
1354
1355                 new Ajax.Request("backend.php?" + query, {
1356                         onComplete: function (transport) {
1357                                 infobox_submit_callback2(transport);
1358                         } });
1359
1360                 return true;
1361
1362         } catch (e) {
1363                 exception_error("createFilter", e);
1364         }
1365 }
1366
1367 function toggleSubmitNotEmpty(e, submit_id) {
1368         try {
1369                 document.getElementById(submit_id).disabled = (e.value == "")
1370         } catch (e) {
1371                 exception_error("toggleSubmitNotEmpty", e);
1372         }
1373 }
1374
1375 function isValidURL(s) {
1376         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1377 }
1378
1379 function subscribeToFeed() {
1380
1381         var form = document.forms['feed_add_form'];
1382         var feed_url = form.feed_url.value;
1383
1384         if (feed_url == "") {
1385                 alert(__("Can't subscribe: no feed URL given."));
1386                 return false;
1387         }
1388
1389         notify_progress(__("Subscribing to feed..."), true);
1390
1391         closeInfoBox();
1392
1393         var feeds_doc = document;
1394
1395 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1396
1397         var query = Form.serialize("feed_add_form");
1398
1399         debug("subscribe q: " + query);
1400
1401         new Ajax.Request("backend.php", {
1402                 parameters: query,
1403                 onComplete: function(transport) {
1404                         dlg_frefresh_callback(transport);
1405                 } });
1406
1407         return false;
1408 }
1409
1410 function filterCR(e, f)
1411 {
1412      var key;
1413
1414      if(window.event)
1415           key = window.event.keyCode;     //IE
1416      else
1417           key = e.which;     //firefox
1418
1419         if (key == 13) {
1420                 if (typeof f != 'undefined') {
1421                         f();
1422                         return false;
1423                 } else {
1424                         return false;
1425                 }
1426         } else {
1427                 return true;
1428         }
1429 }
1430
1431 var debug_last_class = "even";
1432
1433 function debug(msg) {
1434
1435         if (debug_last_class == "even") {
1436                 debug_last_class = "odd";
1437         } else {
1438                 debug_last_class = "even";
1439         }
1440
1441         var c = document.getElementById('debug_output');
1442         if (c && Element.visible(c)) {
1443                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1444                         c.removeChild(c.lastChild);
1445                 }
1446
1447                 var d = new Date();
1448                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1449                         ":" + leading_zero(d.getSeconds());
1450                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1451                         msg + "</li>" + c.innerHTML;
1452         }
1453 }
1454
1455 function getInitParam(key) {
1456         return init_params[key];
1457 }
1458
1459 function storeInitParam(key, value) {
1460         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1461         init_params[key] = value;
1462 }
1463
1464 function fatalError(code, message) {
1465         try {
1466
1467                 if (code == 6) {
1468                         window.location.href = "tt-rss.php";
1469                 } else if (code == 5) {
1470                         window.location.href = "update.php";
1471                 } else {
1472                         var fe = document.getElementById("fatal_error");
1473                         var fc = document.getElementById("fatal_error_msg");
1474
1475                         if (message == "") message = "Unknown error";
1476
1477                         fc.innerHTML = "<img src='images/sign_excl.gif'> " + message + " (Code " + code + ")";
1478
1479                         fe.style.display = "block";
1480                 }
1481
1482         } catch (e) {
1483                 exception_error("fatalError", e);
1484         }
1485 }
1486
1487 function getFeedName(id, is_cat) {
1488         var e;
1489
1490         if (is_cat) {
1491                 e = document.getElementById("FCATN-" + id);
1492         } else {
1493                 e = document.getElementById("FEEDN-" + id);
1494         }
1495         if (e) {
1496                 return e.innerHTML.stripTags();
1497         } else {
1498                 return null;
1499         }
1500 }
1501
1502 function filterDlgCheckType(sender) {
1503
1504         try {
1505
1506                 var ftype = sender[sender.selectedIndex].value;
1507
1508                 var form = document.forms["filter_add_form"];
1509
1510                 if (!form) {
1511                         form = document.forms["filter_edit_form"];
1512                 }
1513
1514                 if (!form) {
1515                         debug("filterDlgCheckType: can't find form!");
1516                         return;
1517                 }
1518
1519                 // if selected filter type is 5 (Date) enable the modifier dropbox
1520                 if (ftype == 5) {
1521                         Element.show("filter_dlg_date_mod_box");
1522                         Element.show("filter_dlg_date_chk_box");
1523                 } else {
1524                         Element.hide("filter_dlg_date_mod_box");
1525                         Element.hide("filter_dlg_date_chk_box");
1526
1527                 }
1528
1529         } catch (e) {
1530                 exception_error("filterDlgCheckType", e);
1531         }
1532
1533 }
1534
1535 function filterDlgCheckAction(sender) {
1536
1537         try {
1538
1539                 var action = sender[sender.selectedIndex].value;
1540
1541                 var form = document.forms["filter_add_form"];
1542
1543                 if (!form) {
1544                         form = document.forms["filter_edit_form"];
1545                 }
1546
1547                 if (!form) {
1548                         debug("filterDlgCheckAction: can't find form!");
1549                         return;
1550                 }
1551
1552                 var action_param = document.getElementById("filter_dlg_param_box");
1553
1554                 if (!action_param) {
1555                         debug("filterDlgCheckAction: can't find action param box!");
1556                         return;
1557                 }
1558
1559                 // if selected action supports parameters, enable params field
1560                 if (action == 4 || action == 6) {
1561                         Element.show(action_param);
1562                 } else {
1563                         Element.hide(action_param);
1564                 }
1565
1566         } catch (e) {
1567                 exception_error("filterDlgCheckAction", e);
1568         }
1569
1570 }
1571
1572 function filterDlgCheckDate() {
1573         try {
1574                 var form = document.forms["filter_add_form"];
1575
1576                 if (!form) {
1577                         form = document.forms["filter_edit_form"];
1578                 }
1579
1580                 if (!form) {
1581                         debug("filterDlgCheckAction: can't find form!");
1582                         return;
1583                 }
1584
1585                 var reg_exp = form.reg_exp.value;
1586
1587                 var query = "backend.php?op=rpc&subop=checkDate&date=" + reg_exp;
1588
1589                 new Ajax.Request(query, {
1590                         onComplete: function(transport) {
1591
1592                                 var form = document.forms["filter_add_form"];
1593
1594                                 if (!form) {
1595                                         form = document.forms["filter_edit_form"];
1596                                 }
1597
1598                                 if (transport.responseXML) {
1599                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1600
1601                                         if (result && result.firstChild) {
1602                                                 if (result.firstChild.nodeValue == "1") {
1603
1604                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1605
1606                                                         return;
1607                                                 }
1608                                         }
1609                                 }
1610
1611                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1612
1613                         } });
1614
1615
1616         } catch (e) {
1617                 exception_error("filterDlgCheckDate", e);
1618         }
1619 }
1620
1621 function explainError(code) {
1622         return displayDlg("explainError", code);
1623 }
1624
1625 // this only searches loaded headlines list, not in CDM
1626 function getRelativePostIds(id, limit) {
1627
1628         if (!limit) limit = 3;
1629
1630         debug("getRelativePostIds: " + id + " limit=" + limit);
1631
1632         var ids = new Array();
1633         var container = document.getElementById("headlinesList");
1634
1635         if (container) {
1636                 var rows = container.rows;
1637
1638                 for (var i = 0; i < rows.length; i++) {
1639                         var r_id = rows[i].id.replace("RROW-", "");
1640
1641                         if (r_id == id) {
1642                                 for (var k = 1; k <= limit; k++) {
1643                                         var nid = false;
1644
1645                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1646                                         if (nid) ids.push(nid);
1647
1648                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1649                                         if (nid) ids.push(nid);
1650                                 }
1651
1652                                 return ids;
1653                         }
1654                 }
1655         }
1656
1657         return false;
1658 }
1659
1660 function openArticleInNewWindow(id) {
1661         try {
1662                 debug("openArticleInNewWindow: " + id);
1663
1664                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1665                 var wname = "ttrss_article_" + id;
1666
1667                 debug(query + " " + wname);
1668
1669                 var w = window.open("", wname);
1670
1671                 if (!w) notify_error("Failed to open window for the article");
1672
1673                 new Ajax.Request(query, {
1674                         onComplete: function(transport) {
1675                                 open_article_callback(transport);
1676                         } });
1677
1678
1679         } catch (e) {
1680                 exception_error("openArticleInNewWindow", e);
1681         }
1682 }
1683
1684 /* http://textsnippets.com/posts/show/835 */
1685
1686 Position.GetWindowSize = function(w) {
1687         w = w ? w : window;
1688         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1689         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1690         return [width, height]
1691 }
1692
1693 /* http://textsnippets.com/posts/show/836 */
1694
1695 Position.Center = function(element, parent) {
1696         var w, h, pw, ph;
1697         var d = Element.getDimensions(element);
1698         w = d.width;
1699         h = d.height;
1700         Position.prepare();
1701         if (!parent) {
1702                 var ws = Position.GetWindowSize();
1703                 pw = ws[0];
1704                 ph = ws[1];
1705         } else {
1706                 pw = parent.offsetWidth;
1707                 ph = parent.offsetHeight;
1708         }
1709         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1710         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1711 }
1712
1713
1714 function labeltest_callback(transport) {
1715         try {
1716                 var container = document.getElementById('label_test_result');
1717
1718                 container.innerHTML = transport.responseText;
1719                 if (!Element.visible(container)) {
1720                         Effect.SlideDown(container, { duration : 0.5 });
1721                 }
1722
1723                 notify("");
1724         } catch (e) {
1725                 exception_error("labeltest_callback", e);
1726         }
1727 }
1728
1729 function labelTest() {
1730
1731         try {
1732                 var container = document.getElementById('label_test_result');
1733
1734                 var form = document.forms['label_edit_form'];
1735
1736                 var sql_exp = form.sql_exp.value;
1737                 var description = form.description.value;
1738
1739                 notify_progress("Loading, please wait...");
1740
1741                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1742                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1743
1744                 new Ajax.Request(query, {
1745                         onComplete: function (transport) {
1746                                 labeltest_callback(transport);
1747                         } });
1748
1749                 return false;
1750
1751         } catch (e) {
1752                 exception_error("labelTest", e);
1753         }
1754 }
1755
1756 function isCdmMode() {
1757         return !document.getElementById("headlinesList");
1758 }
1759
1760 function getSelectedArticleIds2() {
1761         var rows = new Array();
1762         var cdm_mode = isCdmMode();
1763
1764         if (cdm_mode) {
1765                 rows = cdmGetSelectedArticles();
1766         } else {
1767                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1768         }
1769
1770         var ids = new Array();
1771
1772         for (var i = 0; i < rows.length; i++) {
1773                 var chk = document.getElementById("RCHK-" + rows[i]);
1774                 if (chk && chk.checked) {
1775                         ids.push(rows[i]);
1776                 }
1777         }
1778
1779         return ids;
1780 }
1781
1782 function displayHelpInfobox(topic_id) {
1783
1784         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1785
1786         var w = window.open(url, "ttrss_help",
1787                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1788
1789         return false;
1790 }
1791
1792 function focus_element(id) {
1793         try {
1794                 var e = document.getElementById(id);
1795                 if (e) e.focus();
1796         } catch (e) {
1797                 exception_error("focus_element", e);
1798         }
1799         return false;
1800 }
1801
1802 function loading_set_progress(p) {
1803         try {
1804                 if (p < last_progress_point || !Element.visible("overlay")) return;
1805
1806                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1807
1808                 var o = document.getElementById("l_progress_i");
1809
1810 //              o.style.width = (p * 2) + "px";
1811
1812                 new Effect.Scale(o, p, {
1813                         scaleY : false,
1814                         scaleFrom : last_progress_point,
1815                         scaleMode: { originalWidth : 200 },
1816                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1817
1818                 last_progress_point = p;
1819
1820         } catch (e) {
1821                 exception_error("loading_set_progress", e);
1822         }
1823 }
1824
1825 function remove_splash() {
1826         if (Element.visible("overlay")) {
1827                 debug("about to remove splash, OMG!");
1828                 Element.hide("overlay");
1829                 debug("removed splash!");
1830         }
1831 }
1832
1833 function addLabelExample() {
1834         try {
1835                 var form = document.forms["label_edit_form"];
1836
1837                 var text = form.sql_exp;
1838                 var op = form.label_fields[form.label_fields.selectedIndex];
1839                 var p = form.label_fields_param;
1840
1841                 if (op) {
1842                         op = op.value;
1843
1844                         var tmp = "";
1845
1846                         if (text.value != "") {
1847                                 if (text.value.substring(text.value.length-3, 3).toUpperCase() != "AND") {
1848                                         tmp = " AND ";
1849                                 } else {
1850                                         tmp = " ";
1851                                 }
1852                         }
1853
1854                         if (op == "unread") {
1855                                 tmp = tmp + "unread = true";
1856                         }
1857
1858                         if (op == "updated") {
1859                                 tmp = tmp + "last_read is null and unread = false";
1860                         }
1861
1862                         if (op == "kw_title") {
1863                                 if (p.value == "") {
1864                                         alert("This action requires a parameter.");
1865                                         return false;
1866                                 }
1867                                 tmp = tmp + "ttrss_entries.title like '%"+p.value+"%'";
1868                         }
1869
1870                         if (op == "kw_content") {
1871                                 if (p.value == "") {
1872                                         alert("This action requires a parameter.");
1873                                         return false;
1874                                 }
1875
1876                                 tmp = tmp + "ttrss_entries.content like '%"+p.value+"%'";
1877                         }
1878
1879                         if (op == "scoreE") {
1880                                 if (isNaN(parseInt(p.value))) {
1881                                         alert("This action expects numeric parameter.");
1882                                         return false;
1883                                 }
1884                                 tmp = tmp + "score = " + p.value;
1885                         }
1886
1887                         if (op == "scoreG") {
1888                                 if (isNaN(parseInt(p.value))) {
1889                                         alert("This action expects numeric parameter.");
1890                                         return false;
1891                                 }
1892                                 tmp = tmp + "score > " + p.value;
1893                         }
1894
1895                         if (op == "scoreL") {
1896                                 if (isNaN(parseInt(p.value))) {
1897                                         alert("This action expects numeric parameter.");
1898                                         return false;
1899                                 }
1900                                 tmp = tmp + "score < " + p.value;
1901                         }
1902
1903                         if (op == "newerD") {
1904                                 if (isNaN(parseInt(p.value))) {
1905                                         alert("This action expects numeric parameter.");
1906                                         return false;
1907                                 }
1908                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" days'";
1909                         }
1910
1911                         if (op == "newerH") {
1912                                 if (isNaN(parseInt(p.value))) {
1913                                         alert("This action expects numeric parameter.");
1914                                         return false;
1915                                 }
1916
1917                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" hours'";
1918                         }
1919
1920                         text.value = text.value + tmp;
1921
1922                         p.value = "";
1923
1924                 }
1925
1926         } catch (e) {
1927                 exception_error("addLabelExample", e);
1928         }
1929
1930         return false;
1931 }
1932
1933 function labelFieldsCheck(elem) {
1934         try {
1935                 var op = elem[elem.selectedIndex].value;
1936
1937                 var p = document.forms["label_edit_form"].label_fields_param;
1938
1939                 if (op == "kw_title" || op == "kw_content" || op == "scoreL" ||
1940                                 op == "scoreG" ||       op == "scoreE" || op == "newerD" ||
1941                                 op == "newerH" ) {
1942                         Element.show(p);
1943                 } else {
1944                         Element.hide(p);
1945                 }
1946
1947         } catch (e) {
1948                 exception_error("labelFieldsCheck", e);
1949
1950         }
1951 }