functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 0;
   4 var async_counters_work = false;
   5
   6 /* add method to remove element from array */
   7
   8 Array.prototype.remove = function(s) {
   9         for (var i=0; i < this.length; i++) {
  10                 if (s == this[i]) this.splice(i, 1);
  11         }
  12 }
  13
  14 function is_opera() {
  15         return window.opera;
  16 }
  17
  18 function exception_error(location, e, ext_info) {
  19         var msg = format_exception_error(location, e);
  20
  21         disableHotkeys();
  22
  23         try {
  24
  25                 var ebc = document.getElementById("xebContent");
  26
  27                 if (ebc) {
  28
  29                         Element.show("dialog_overlay");
  30                         Element.show("errorBoxShadow");
  31
  32                         if (ext_info) {
  33                                 if (ext_info.responseText) {
  34                                         ext_info = ext_info.responseText;
  35                                 }
  36                         }
  37
  38                         ebc.innerHTML =
  39                                 "<div><b>Error message:</b></div>" +
  40                                 "<pre>" + msg + "</pre>" +
  41                                 "<div><b>Additional information:</b></div>" +
  42                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  43
  44                 } else {
  45                         alert(msg);
  46                 }
  47
  48         } catch (e) {
  49                 alert(msg);
  50
  51         }
  52
  53 }
  54
  55 function format_exception_error(location, e) {
  56         var msg;
  57
  58         if (e.fileName) {
  59                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  60
  61                 msg = "Exception: " + e.name + ", " + e.message +
  62                         "\nFunction: " + location + "()" +
  63                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  64
  65         } else if (e.description) {
  66                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  67         } else {
  68                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  69         }
  70
  71         debug("<b>EXCEPTION: " + msg + "</b>");
  72
  73         return msg;
  74 }
  75
  76
  77 function disableHotkeys() {
  78         hotkeys_enabled = false;
  79 }
  80
  81 function enableHotkeys() {
  82         hotkeys_enabled = true;
  83 }
  84
  85 function open_article_callback(transport) {
  86         try {
  87
  88                 if (transport.responseXML) {
  89
  90                         var link = transport.responseXML.getElementsByTagName("link")[0];
  91                         var id = transport.responseXML.getElementsByTagName("id")[0];
  92
  93                         debug("open_article_callback, received link: " + link);
  94
  95                         if (link && id) {
  96
  97                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
  98
  99                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
 100
 101                                 var w = window.open(link.firstChild.nodeValue, wname);
 102
 103                                 if (!w) { notify_error("Failed to load article in new window"); }
 104
 105                                 if (id) {
 106                                         id = id.firstChild.nodeValue;
 107                                         if (!document.getElementById("headlinesList")) {
 108                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
 109                                         }
 110                                 }
 111                         } else {
 112                                 notify_error("Can't open article: received invalid article link");
 113                         }
 114                 } else {
 115                         notify_error("Can't open article: received invalid XML");
 116                 }
 117
 118         } catch (e) {
 119                 exception_error("open_article_callback", e);
 120         }
 121 }
 122
 123 function param_escape(arg) {
 124         if (typeof encodeURIComponent != 'undefined')
 125                 return encodeURIComponent(arg);
 126         else
 127                 return escape(arg);
 128 }
 129
 130 function param_unescape(arg) {
 131         if (typeof decodeURIComponent != 'undefined')
 132                 return decodeURIComponent(arg);
 133         else
 134                 return unescape(arg);
 135 }
 136
 137 function delay(gap) {
 138         var then,now;
 139         then=new Date().getTime();
 140         now=then;
 141         while((now-then)<gap) {
 142                 now=new Date().getTime();
 143         }
 144 }
 145
 146 var notify_hide_timerid = false;
 147
 148 function hide_notify() {
 149         var n = document.getElementById("notify");
 150         if (n) {
 151                 n.style.display = "none";
 152         }
 153 }
 154
 155 function notify_silent_next() {
 156         notify_silent = true;
 157 }
 158
 159 function notify_real(msg, no_hide, n_type) {
 160
 161         if (notify_silent) {
 162                 notify_silent = false;
 163                 return;
 164         }
 165
 166         var n = document.getElementById("notify");
 167         var nb = document.getElementById("notify_body");
 168
 169         if (!n || !nb) return;
 170
 171         if (notify_hide_timerid) {
 172                 window.clearTimeout(notify_hide_timerid);
 173         }
 174
 175         if (msg == "") {
 176                 if (n.style.display == "block") {
 177                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 178                 }
 179                 return;
 180         } else {
 181                 n.style.display = "block";
 182         }
 183
 184         /* types:
 185
 186                 1 - generic
 187                 2 - progress
 188                 3 - error
 189                 4 - info
 190
 191         */
 192
 193         if (typeof __ != 'undefined') {
 194                 msg = __(msg);
 195         }
 196
 197         if (n_type == 1) {
 198                 n.className = "notify";
 199         } else if (n_type == 2) {
 200                 n.className = "notifyProgress";
 201                 msg = "<img src='images/indicator_white.gif'> " + msg;
 202         } else if (n_type == 3) {
 203                 n.className = "notifyError";
 204                 msg = "<img src='images/sign_excl.gif'> " + msg;
 205         } else if (n_type == 4) {
 206                 n.className = "notifyInfo";
 207                 msg = "<img src='images/sign_info.gif'> " + msg;
 208         }
 209
 210 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 211
 212         nb.innerHTML = msg;
 213
 214         if (!no_hide) {
 215                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 216         }
 217 }
 218
 219 function notify(msg, no_hide) {
 220         notify_real(msg, no_hide, 1);
 221 }
 222
 223 function notify_progress(msg, no_hide) {
 224         notify_real(msg, no_hide, 2);
 225 }
 226
 227 function notify_error(msg, no_hide) {
 228         notify_real(msg, no_hide, 3);
 229
 230 }
 231
 232 function notify_info(msg, no_hide) {
 233         notify_real(msg, no_hide, 4);
 234 }
 235
 236 function printLockingError() {
 237         notify_info("Please wait until operation finishes.");
 238 }
 239
 240 function cleanSelected(element) {
 241         var content = document.getElementById(element);
 242
 243         for (i = 0; i < content.rows.length; i++) {
 244                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 245         }
 246 }
 247
 248 function getVisibleUnreadHeadlines() {
 249         var content = document.getElementById("headlinesList");
 250
 251         var rows = new Array();
 252
 253         if (!content) return rows;
 254
 255         for (i = 0; i < content.rows.length; i++) {
 256                 var row_id = content.rows[i].id.replace("RROW-", "");
 257                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 258                                 rows.push(row_id);
 259                 }
 260         }
 261         return rows;
 262 }
 263
 264 function getVisibleHeadlineIds() {
 265
 266         var content = document.getElementById("headlinesList");
 267
 268         var rows = new Array();
 269
 270         if (!content) return rows;
 271
 272         for (i = 0; i < content.rows.length; i++) {
 273                 var row_id = content.rows[i].id.replace("RROW-", "");
 274                 if (row_id.length > 0) {
 275                                 rows.push(row_id);
 276                 }
 277         }
 278         return rows;
 279 }
 280
 281 function getFirstVisibleHeadlineId() {
 282         if (isCdmMode()) {
 283                 var rows = cdmGetVisibleArticles();
 284                 return rows[0];
 285         } else {
 286                 var rows = getVisibleHeadlineIds();
 287                 return rows[0];
 288         }
 289 }
 290
 291 function getLastVisibleHeadlineId() {
 292         if (isCdmMode()) {
 293                 var rows = cdmGetVisibleArticles();
 294                 return rows[rows.length-1];
 295         } else {
 296                 var rows = getVisibleHeadlineIds();
 297                 return rows[rows.length-1];
 298         }
 299 }
 300
 301 function markHeadline(id) {
 302         var row = document.getElementById("RROW-" + id);
 303         if (row) {
 304                 var is_active = false;
 305
 306                 if (row.className.match("Active")) {
 307                         is_active = true;
 308                 }
 309                 row.className = row.className.replace("Selected", "");
 310                 row.className = row.className.replace("Active", "");
 311                 row.className = row.className.replace("Insensitive", "");
 312
 313                 if (is_active) {
 314                         row.className = row.className = "Active";
 315                 }
 316
 317                 var check = document.getElementById("RCHK-" + id);
 318
 319                 if (check) {
 320                         check.checked = true;
 321                 }
 322
 323                 row.className = row.className + "Selected";
 324
 325         }
 326 }
 327
 328 function getFeedIds() {
 329         var content = document.getElementById("feedsList");
 330
 331         var rows = new Array();
 332
 333         for (i = 0; i < content.rows.length; i++) {
 334                 var id = content.rows[i].id.replace("FEEDR-", "");
 335                 if (id.length > 0) {
 336                         rows.push(id);
 337                 }
 338         }
 339
 340         return rows;
 341 }
 342
 343 function setCookie(name, value, lifetime, path, domain, secure) {
 344
 345         var d = false;
 346
 347         if (lifetime) {
 348                 d = new Date();
 349                 d.setTime(d.getTime() + (lifetime * 1000));
 350         }
 351
 352         debug("setCookie: " + name + " => " + value + ": " + d);
 353
 354         int_setCookie(name, value, d, path, domain, secure);
 355
 356 }
 357
 358 function int_setCookie(name, value, expires, path, domain, secure) {
 359         document.cookie= name + "=" + escape(value) +
 360                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 361                 ((path) ? "; path=" + path : "") +
 362                 ((domain) ? "; domain=" + domain : "") +
 363                 ((secure) ? "; secure" : "");
 364 }
 365
 366 function delCookie(name, path, domain) {
 367         if (getCookie(name)) {
 368                 document.cookie = name + "=" +
 369                 ((path) ? ";path=" + path : "") +
 370                 ((domain) ? ";domain=" + domain : "" ) +
 371                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 372         }
 373 }
 374
 375
 376 function getCookie(name) {
 377
 378         var dc = document.cookie;
 379         var prefix = name + "=";
 380         var begin = dc.indexOf("; " + prefix);
 381         if (begin == -1) {
 382             begin = dc.indexOf(prefix);
 383             if (begin != 0) return null;
 384         }
 385         else {
 386             begin += 2;
 387         }
 388         var end = document.cookie.indexOf(";", begin);
 389         if (end == -1) {
 390             end = dc.length;
 391         }
 392         return unescape(dc.substring(begin + prefix.length, end));
 393 }
 394
 395 function disableContainerChildren(id, disable, doc) {
 396
 397         if (!doc) doc = document;
 398
 399         var container = doc.getElementById(id);
 400
 401         if (!container) {
 402                 //alert("disableContainerChildren: element " + id + " not found");
 403                 return;
 404         }
 405
 406         for (var i = 0; i < container.childNodes.length; i++) {
 407                 var child = container.childNodes[i];
 408
 409                 try {
 410                         child.disabled = disable;
 411                 } catch (E) {
 412
 413                 }
 414
 415                 if (disable) {
 416                         if (child.className && child.className.match("button")) {
 417                                 child.className = "disabledButton";
 418                         }
 419                 } else {
 420                         if (child.className && child.className.match("disabledButton")) {
 421                                 child.className = "button";
 422                         }
 423                 }
 424         }
 425
 426 }
 427
 428 function gotoPreferences() {
 429         document.location.href = "prefs.php";
 430 }
 431
 432 function gotoMain() {
 433         document.location.href = "tt-rss.php";
 434 }
 435
 436 function gotoExportOpml() {
 437         document.location.href = "opml.php?op=Export";
 438 }
 439
 440 function parse_counters(reply, scheduled_call) {
 441         try {
 442
 443                 var feeds_found = 0;
 444
 445                 var elems = reply.getElementsByTagName("counter");
 446
 447                 for (var l = 0; l < elems.length; l++) {
 448
 449                         var id = elems[l].getAttribute("id");
 450                         var t = elems[l].getAttribute("type");
 451                         var ctr = elems[l].getAttribute("counter");
 452                         var error = elems[l].getAttribute("error");
 453                         var has_img = elems[l].getAttribute("hi");
 454                         var updated = elems[l].getAttribute("updated");
 455                         var title = elems[l].getAttribute("title");
 456                         var xmsg = elems[l].getAttribute("xmsg");
 457
 458                         if (id == "global-unread") {
 459                                 global_unread = ctr;
 460                                 updateTitle();
 461                                 continue;
 462                         }
 463
 464                         if (id == "subscribed-feeds") {
 465                                 feeds_found = ctr;
 466                                 continue;
 467                         }
 468
 469                         if (t == "category") {
 470                                 var catctr = document.getElementById("FCATCTR-" + id);
 471                                 if (catctr) {
 472                                         catctr.innerHTML = "(" + ctr + ")";
 473                                         if (ctr > 0) {
 474                                                 catctr.className = "catCtrHasUnread";
 475                                         } else {
 476                                                 catctr.className = "catCtrNoUnread";
 477                                         }
 478                                 }
 479                                 continue;
 480                         }
 481
 482                         var feedctr = document.getElementById("FEEDCTR-" + id);
 483                         var feedu = document.getElementById("FEEDU-" + id);
 484                         var feedr = document.getElementById("FEEDR-" + id);
 485                         var feed_img = document.getElementById("FIMG-" + id);
 486                         var feedlink = document.getElementById("FEEDL-" + id);
 487                         var feedupd = document.getElementById("FLUPD-" + id);
 488
 489                         if (updated && feedlink) {
 490                                 if (error) {
 491                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 492                                 } else {
 493                                         feedlink.title = "Updated: " + updated;
 494                                 }
 495                         }
 496
 497                         if (feedupd) {
 498                                 if (!updated) updated = "";
 499
 500                                 if (error) {
 501                                         if (xmsg) {
 502                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 503                                         } else {
 504                                                 feedupd.innerHTML = updated + " (Error)";
 505                                         }
 506                                 } else {
 507                                         if (xmsg) {
 508                                                 feedupd.innerHTML = updated + " " + xmsg;
 509                                         } else {
 510                                                 feedupd.innerHTML = updated;
 511                                         }
 512                                 }
 513                         }
 514
 515                         if (has_img && feed_img) {
 516                                 if (!feed_img.src.match(id + ".ico")) {
 517                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 518                                 }
 519                         }
 520
 521                         if (feedlink && title) {
 522                                 feedlink.innerHTML = title;
 523                         }
 524
 525                         if (feedctr && feedu && feedr) {
 526
 527                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 528                                         viewCurrentFeed();
 529                                 }
 530
 531                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 532
 533                                 feedu.innerHTML = ctr;
 534
 535                                 if (error) {
 536                                         feedr.className = feedr.className.replace("feed", "error");
 537                                 } else if (id > 0) {
 538                                         feedr.className = feedr.className.replace("error", "feed");
 539                                 }
 540
 541                                 if (ctr > 0) {
 542                                         feedctr.className = "feedCtrHasUnread";
 543                                         if (!feedr.className.match("Unread")) {
 544                                                 var is_selected = feedr.className.match("Selected");
 545
 546                                                 feedr.className = feedr.className.replace("Selected", "");
 547                                                 feedr.className = feedr.className.replace("Unread", "");
 548
 549                                                 feedr.className = feedr.className + "Unread";
 550
 551                                                 if (is_selected) {
 552                                                         feedr.className = feedr.className + "Selected";
 553                                                 }
 554
 555                                         }
 556
 557                                         if (row_needs_hl) {
 558                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 559                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 560                                         }
 561                                 } else {
 562                                         feedctr.className = "feedCtrNoUnread";
 563                                         feedr.className = feedr.className.replace("Unread", "");
 564                                 }
 565                         }
 566                 }
 567
 568                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 569
 570                 var feeds_stored = number_of_feeds;
 571
 572                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 573
 574                 if (feeds_stored != feeds_found) {
 575                         number_of_feeds = feeds_found;
 576
 577                         if (feeds_stored != 0 && feeds_found != 0) {
 578                                 debug("Subscribed feed number changed, refreshing feedlist");
 579                                 setTimeout('updateFeedList(false, false)', 50);
 580                         }
 581                 } else {
 582 /*                      var fl = document.getElementById("feeds-frame").innerHTML;
 583                         if (fl) {
 584                                 cache_invalidate("FEEDLIST");
 585                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 586                         } */
 587                 }
 588
 589         } catch (e) {
 590                 exception_error("parse_counters", e);
 591         }
 592 }
 593
 594 function parse_counters_reply(transport, scheduled_call) {
 595
 596         if (!transport.responseXML) {
 597                 notify_error("Backend did not return valid XML", true);
 598                 return;
 599         }
 600
 601         var reply = transport.responseXML.firstChild;
 602
 603         if (!reply) {
 604                 notify_error("Backend did not return expected XML object", true);
 605                 updateTitle("");
 606                 return;
 607         }
 608
 609         if (!transport_error_check(transport)) return;
 610
 611         var counters = reply.getElementsByTagName("counters")[0];
 612
 613         parse_counters(counters, scheduled_call);
 614
 615         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 616
 617         parse_runtime_info(runtime_info);
 618
 619         if (feedsSortByUnread()) {
 620                 resort_feedlist();
 621         }
 622
 623         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 624
 625 }
 626
 627 function all_counters_callback2(transport, async_call) {
 628         try {
 629                 if (async_call) async_counters_work = true;
 630
 631                 if (offline_mode) return;
 632
 633                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 634                 parse_counters_reply(transport);
 635                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 636
 637         } catch (e) {
 638                 exception_error("all_counters_callback2", e, transport);
 639         }
 640 }
 641
 642 function get_feed_unread(id) {
 643         try {
 644                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 645         } catch (e) {
 646                 return -1;
 647         }
 648 }
 649
 650 function get_cat_unread(id) {
 651         try {
 652                 var ctr = document.getElementById("FCATCTR-" + id).innerHTML;
 653                 ctr = ctr.replace("(", "");
 654                 ctr = ctr.replace(")", "");
 655                 return parseInt(ctr);
 656         } catch (e) {
 657                 return -1;
 658         }
 659 }
 660
 661 function get_feed_entry_unread(elem) {
 662
 663         var id = elem.id.replace("FEEDR-", "");
 664
 665         if (id <= 0) {
 666                 return -1;
 667         }
 668
 669         try {
 670                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 671         } catch (e) {
 672                 return -1;
 673         }
 674 }
 675
 676 function get_feed_entry_name(elem) {
 677         var id = elem.id.replace("FEEDR-", "");
 678         return getFeedName(id);
 679 }
 680
 681
 682 function resort_category(node) {
 683
 684         try {
 685
 686                 debug("resort_category: " + node);
 687
 688                 var by_unread = feedsSortByUnread();
 689
 690                 var list = node.getElementsByTagName("LI");
 691
 692                 for (i = 0; i < list.length; i++) {
 693
 694                         for (j = i+1; j < list.length; j++) {
 695
 696                                 var tmp_val = get_feed_entry_unread(list[i]);
 697                                 var cur_val = get_feed_entry_unread(list[j]);
 698
 699                                 var tmp_name = get_feed_entry_name(list[i]);
 700                                 var cur_name = get_feed_entry_name(list[j]);
 701
 702                                 if ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name))) {
 703                                         tempnode_i = list[i].cloneNode(true);
 704                                         tempnode_j = list[j].cloneNode(true);
 705                                         node.replaceChild(tempnode_i, list[j]);
 706                                         node.replaceChild(tempnode_j, list[i]);
 707                                 }
 708                         }
 709                 }
 710
 711         } catch (e) {
 712                 exception_error("resort_category", e);
 713         }
 714
 715 }
 716
 717 function resort_feedlist() {
 718         debug("resort_feedlist");
 719
 720         if (document.getElementById("FCATLIST--1")) {
 721
 722                 var lists = document.getElementsByTagName("UL");
 723
 724                 for (var i = 0; i < lists.length; i++) {
 725                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 726                                 resort_category(lists[i]);
 727                         }
 728                 }
 729
 730         } else {
 731                 resort_category(document.getElementById("feedList"));
 732         }
 733 }
 734
 735 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 736   * * @author Sundar Dorai-Raj
 737   * * Email: sdoraira@vt.edu
 738   * * This program is free software; you can redistribute it and/or
 739   * * modify it under the terms of the GNU General Public License
 740   * * as published by the Free Software Foundation; either version 2
 741   * * of the License, or (at your option) any later version,
 742   * * provided that any use properly credits the author.
 743   * * This program is distributed in the hope that it will be useful,
 744   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 745   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 746   * * GNU General Public License for more details at http://www.gnu.org * * */
 747
 748   var numbers=".0123456789";
 749   function isNumeric(x) {
 750     // is x a String or a character?
 751     if(x.length>1) {
 752       // remove negative sign
 753       x=Math.abs(x)+"";
 754       for(j=0;j<x.length;j++) {
 755         // call isNumeric recursively for each character
 756         number=isNumeric(x.substring(j,j+1));
 757         if(!number) return number;
 758       }
 759       return number;
 760     }
 761     else {
 762       // if x is number return true
 763       if(numbers.indexOf(x)>=0) return true;
 764       return false;
 765     }
 766   }
 767
 768
 769 function hideOrShowFeeds(hide) {
 770
 771         try {
 772
 773         debug("hideOrShowFeeds: " + hide);
 774
 775         if (document.getElementById("FCATLIST--1")) {
 776
 777                 var lists = document.getElementsByTagName("UL");
 778
 779                 for (var i = 0; i < lists.length; i++) {
 780                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 781
 782                                 var id = lists[i].id.replace("FCATLIST-", "");
 783                                 hideOrShowFeedsCategory(id, hide);
 784                         }
 785                 }
 786
 787         } else {
 788                 hideOrShowFeedsCategory(null, hide);
 789         }
 790
 791         } catch (e) {
 792                 exception_error("hideOrShowFeeds", e);
 793         }
 794 }
 795
 796 function hideOrShowFeedsCategory(id, hide) {
 797
 798         try {
 799
 800                 var node = null;
 801                 var cat_node = null;
 802
 803                 if (id) {
 804                         node = document.getElementById("FCATLIST-" + id);
 805                         cat_node = document.getElementById("FCAT-" + id);
 806                 } else {
 807                         node = document.getElementById("feedList"); // no categories
 808                 }
 809
 810         //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 811
 812                 var cat_unread = 0;
 813
 814                 if (!node) {
 815                         debug("hideOrShowFeeds: passed node is null, aborting");
 816                         return;
 817                 }
 818
 819         //      debug("cat: " + node.id);
 820
 821                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 822                         for (i = 0; i < node.childNodes.length; i++) {
 823                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 824
 825                                 if (node.childNodes[i].style != undefined) {
 826
 827                                         var has_unread = (node.childNodes[i].className != "feed" &&
 828                                                 node.childNodes[i].className != "label" &&
 829                                                 !(!getInitParam("hide_read_shows_special") &&
 830                                                         node.childNodes[i].className == "virt") &&
 831                                                 node.childNodes[i].className != "error" &&
 832                                                 node.childNodes[i].className != "tag");
 833
 834         //                              debug(node.childNodes[i].id + " --> " + has_unread);
 835
 836                                         if (hide && !has_unread) {
 837                                                 //node.childNodes[i].style.display = "none";
 838                                                 var id = node.childNodes[i].id;
 839                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 840                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 841                                         }
 842
 843                                         if (!hide) {
 844                                                 node.childNodes[i].style.display = "list-item";
 845                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 846                                         }
 847
 848                                         if (has_unread) {
 849                                                 node.childNodes[i].style.display = "list-item";
 850                                                 cat_unread++;
 851                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 852                                                 //Effect.Highlight(node.childNodes[i]);
 853                                         }
 854                                 }
 855                         }
 856                 }
 857
 858         //      debug("end cat: " + node.id + " unread " + cat_unread);
 859
 860                 if (cat_node) {
 861
 862                         if (cat_unread == 0) {
 863                                 if (cat_node.style == undefined) {
 864                                         debug("ERROR: supplied cat_node " + cat_node +
 865                                                 " has no styles. WTF?");
 866                                         return;
 867                                 }
 868                                 if (hide) {
 869                                         //cat_node.style.display = "none";
 870                                         Effect.Fade(cat_node, {duration : 0.3,
 871                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 872                                 } else {
 873                                         cat_node.style.display = "list-item";
 874                                 }
 875                         } else {
 876                                 try {
 877                                         cat_node.style.display = "list-item";
 878                                 } catch (e) {
 879                                         debug(e);
 880                                 }
 881                         }
 882                 }
 883
 884 //      debug("unread for category: " + cat_unread);
 885
 886         } catch (e) {
 887                 exception_error("hideOrShowFeedsCategory", e);
 888         }
 889 }
 890
 891 function selectTableRow(r, do_select) {
 892         r.className = r.className.replace("Selected", "");
 893
 894         if (do_select) {
 895                 r.className = r.className + "Selected";
 896         }
 897 }
 898
 899 function selectTableRowById(elem_id, check_id, do_select) {
 900
 901         try {
 902
 903                 var row = document.getElementById(elem_id);
 904
 905                 if (row) {
 906                         selectTableRow(row, do_select);
 907                 }
 908
 909                 var check = document.getElementById(check_id);
 910
 911                 if (check) {
 912                         check.checked = do_select;
 913                 }
 914         } catch (e) {
 915                 exception_error("selectTableRowById", e);
 916         }
 917 }
 918
 919 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 920         classcheck, reset_others) {
 921
 922         var content = document.getElementById(content_id);
 923
 924         if (!content) {
 925                 alert("[selectTableRows] Element " + content_id + " not found.");
 926                 return;
 927         }
 928
 929         for (i = 0; i < content.rows.length; i++) {
 930                 if (Element.visible(content.rows[i])) {
 931                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 932
 933                                 if (content.rows[i].id.match(prefix)) {
 934                                         selectTableRow(content.rows[i], do_select);
 935
 936                                         var row_id = content.rows[i].id.replace(prefix, "");
 937                                         var check = document.getElementById(check_prefix + row_id);
 938
 939                                         if (check) {
 940                                                 check.checked = do_select;
 941                                         }
 942                                 } else if (reset_others) {
 943                                         selectTableRow(content.rows[i], false);
 944
 945                                         var row_id = content.rows[i].id.replace(prefix, "");
 946                                         var check = document.getElementById(check_prefix + row_id);
 947
 948                                         if (check) {
 949                                                 check.checked = false;
 950                                         }
 951
 952                                 }
 953                         } else if (reset_others) {
 954                                 selectTableRow(content.rows[i], false);
 955
 956                                 var row_id = content.rows[i].id.replace(prefix, "");
 957                                 var check = document.getElementById(check_prefix + row_id);
 958
 959                                 if (check) {
 960                                         check.checked = false;
 961                                 }
 962
 963                         }
 964                 }
 965         }
 966 }
 967
 968 function getSelectedTableRowIds(content_id, prefix) {
 969
 970         var content = document.getElementById(content_id);
 971
 972         if (!content) {
 973                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 974                 return;
 975         }
 976
 977         var sel_rows = new Array();
 978
 979         for (i = 0; i < content.rows.length; i++) {
 980                 if (content.rows[i].id.match(prefix) &&
 981                                 content.rows[i].className.match("Selected")) {
 982
 983                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 984                         sel_rows.push(row_id);
 985                 }
 986         }
 987
 988         return sel_rows;
 989
 990 }
 991
 992 function toggleSelectRowById(sender, id) {
 993         var row = document.getElementById(id);
 994
 995         if (sender.checked) {
 996                 if (!row.className.match("Selected")) {
 997                         row.className = row.className + "Selected";
 998                 }
 999         } else {
1000                 if (row.className.match("Selected")) {
1001                         row.className = row.className.replace("Selected", "");
1002                 }
1003         }
1004 }
1005
1006 function toggleSelectListRow(sender) {
1007         var parent_row = sender.parentNode;
1008
1009         if (sender.checked) {
1010                 if (!parent_row.className.match("Selected")) {
1011                         parent_row.className = parent_row.className + "Selected";
1012                 }
1013         } else {
1014                 if (parent_row.className.match("Selected")) {
1015                         parent_row.className = parent_row.className.replace("Selected", "");
1016                 }
1017         }
1018 }
1019
1020 function tSR(sender) {
1021         return toggleSelectRow(sender);
1022 }
1023
1024 function toggleSelectRow(sender) {
1025         var parent_row = sender.parentNode.parentNode;
1026
1027         if (sender.checked) {
1028                 if (!parent_row.className.match("Selected")) {
1029                         parent_row.className = parent_row.className + "Selected";
1030                 }
1031         } else {
1032                 if (parent_row.className.match("Selected")) {
1033                         parent_row.className = parent_row.className.replace("Selected", "");
1034                 }
1035         }
1036 }
1037
1038 function getNextUnreadCat(id) {
1039         try {
1040                 var rows = document.getElementById("feedList").getElementsByTagName("LI");
1041                 var feeds = new Array();
1042
1043                 var unread_only = true;
1044                 var is_cat = true;
1045
1046                 for (var i = 0; i < rows.length; i++) {
1047                         if (rows[i].id.match("FCAT-")) {
1048                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1049
1050                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1051
1052                                         if (cat_id >= 0) {
1053                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1054                                                         feeds.push(cat_id);
1055                                                 }
1056                                         }
1057                                 }
1058                         }
1059                 }
1060
1061                 var idx = feeds.indexOf(id);
1062                 if (idx != -1 && idx < feeds.length) {
1063                         return feeds[idx+1];
1064                 } else {
1065                         return feeds.shift();
1066                 }
1067
1068         } catch (e) {
1069                 exception_error("getNextUnreadCat", e);
1070         }
1071 }
1072
1073 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1074         try {
1075
1076 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1077
1078                 var rows = document.getElementById("feedList").getElementsByTagName("LI");
1079                 var feeds = new Array();
1080
1081                 for (var i = 0; i < rows.length; i++) {
1082                         if (rows[i].id.match("FEEDR-")) {
1083
1084                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1085
1086                                         if (!unread_only ||
1087                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1088                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1089                                         }
1090                                 }
1091                         }
1092
1093                         if (rows[i].id.match("FCAT-")) {
1094                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1095
1096                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1097
1098                                         if (cat_id >= 0) {
1099                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1100                                                         feeds.push("CAT:"+cat_id);
1101                                                 }
1102                                         }
1103                                 }
1104                         }
1105                 }
1106
1107 //              alert(feeds.toString());
1108
1109                 if (!id) {
1110                         if (direction == "next") {
1111                                 return feeds.shift();
1112                         } else {
1113                                 return feeds.pop();
1114                         }
1115                 } else {
1116                         if (direction == "next") {
1117                                 if (is_cat) id = "CAT:" + id;
1118                                 var idx = feeds.indexOf(id);
1119                                 if (idx != -1 && idx < feeds.length) {
1120                                         return feeds[idx+1];
1121                                 } else {
1122                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1123                                 }
1124                         } else {
1125                                 if (is_cat) id = "CAT:" + id;
1126                                 var idx = feeds.indexOf(id);
1127                                 if (idx > 0) {
1128                                         return feeds[idx-1];
1129                                 } else {
1130                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1131                                 }
1132                         }
1133
1134                 }
1135
1136         } catch (e) {
1137                 exception_error("getRelativeFeedId2", e);
1138         }
1139 }
1140
1141
1142 function getRelativeFeedId(list, id, direction, unread_only) {
1143         var rows = list.getElementsByTagName("LI");
1144         var feeds = new Array();
1145
1146         for (var i = 0; i < rows.length; i++) {
1147                 if (rows[i].id.match("FEEDR-")) {
1148
1149                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1150
1151                                 if (!unread_only ||
1152                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1153                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1154                                 }
1155                         }
1156                 }
1157         }
1158
1159         if (!id) {
1160                 if (direction == "next") {
1161                         return feeds.shift();
1162                 } else {
1163                         return feeds.pop();
1164                 }
1165         } else {
1166                 if (direction == "next") {
1167                         var idx = feeds.indexOf(id);
1168                         if (idx != -1 && idx < feeds.length) {
1169                                 return feeds[idx+1];
1170                         } else {
1171                                 return getRelativeFeedId(list, false, direction, unread_only);
1172                         }
1173                 } else {
1174                         var idx = feeds.indexOf(id);
1175                         if (idx > 0) {
1176                                 return feeds[idx-1];
1177                         } else {
1178                                 return getRelativeFeedId(list, false, direction, unread_only);
1179                         }
1180                 }
1181
1182         }
1183 }
1184
1185 function showBlockElement(id, h_id) {
1186         var elem = document.getElementById(id);
1187
1188         if (elem) {
1189                 elem.style.display = "block";
1190
1191                 if (h_id) {
1192                         elem = document.getElementById(h_id);
1193                         if (elem) {
1194                                 elem.style.display = "none";
1195                         }
1196                 }
1197         } else {
1198                 alert("[showBlockElement] can't find element with id " + id);
1199         }
1200 }
1201
1202 function appearBlockElement_afh(effect) {
1203
1204 }
1205
1206 function checkboxToggleElement(elem, id) {
1207         if (elem.checked) {
1208                 Effect.Appear(id, {duration : 0.5});
1209         } else {
1210                 Effect.Fade(id, {duration : 0.5});
1211         }
1212 }
1213
1214 function appearBlockElement(id, h_id) {
1215
1216         try {
1217                 if (h_id) {
1218                         Effect.Fade(h_id);
1219                 }
1220                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1221         } catch (e) {
1222                 exception_error("appearBlockElement", e);
1223         }
1224
1225 }
1226
1227 function hideParentElement(e) {
1228         e.parentNode.style.display = "none";
1229 }
1230
1231 function dropboxSelect(e, v) {
1232         for (i = 0; i < e.length; i++) {
1233                 if (e[i].value == v) {
1234                         e.selectedIndex = i;
1235                         break;
1236                 }
1237         }
1238 }
1239
1240 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1241 // bugfixed just a little bit :-)
1242 function getURLParam(strParamName){
1243   var strReturn = "";
1244   var strHref = window.location.href;
1245
1246   if (strHref.indexOf("#") == strHref.length-1) {
1247                 strHref = strHref.substring(0, strHref.length-1);
1248   }
1249
1250   if ( strHref.indexOf("?") > -1 ){
1251     var strQueryString = strHref.substr(strHref.indexOf("?"));
1252     var aQueryString = strQueryString.split("&");
1253     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1254       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1255         var aParam = aQueryString[iParam].split("=");
1256         strReturn = aParam[1];
1257         break;
1258       }
1259     }
1260   }
1261   return strReturn;
1262 }
1263
1264 function leading_zero(p) {
1265         var s = String(p);
1266         if (s.length == 1) s = "0" + s;
1267         return s;
1268 }
1269
1270 function closeErrorBox() {
1271
1272         if (Element.visible("errorBoxShadow")) {
1273                 Element.hide("dialog_overlay");
1274                 Element.hide("errorBoxShadow");
1275
1276                 enableHotkeys();
1277         }
1278
1279         return false;
1280 }
1281
1282 function closeInfoBox(cleanup) {
1283
1284         if (Element.visible("infoBoxShadow")) {
1285                 Element.hide("dialog_overlay");
1286
1287                 var shadow = document.getElementById('infoBoxShadow');
1288                 var box = document.getElementById('infoBoxShadow');
1289
1290                 Element.hide(shadow);
1291
1292                 if (cleanup) box.innerHTML = "&nbsp;";
1293
1294                 enableHotkeys();
1295         }
1296
1297         return false;
1298 }
1299
1300
1301 function displayDlg(id, param) {
1302
1303         notify_progress("Loading, please wait...", true);
1304
1305         disableHotkeys();
1306
1307         var query = "backend.php?op=dlg&id=" +
1308                 param_escape(id) + "&param=" + param_escape(param);
1309
1310         new Ajax.Request(query, {
1311                 onComplete: function (transport) {
1312                         infobox_callback2(transport);
1313                 } });
1314
1315         return false;
1316 }
1317
1318 function infobox_submit_callback2(transport) {
1319         closeInfoBox();
1320
1321         try {
1322                 // called from prefs, reload tab
1323                 if (typeof active_tab != 'undefined' && active_tab) {
1324                         selectTab(active_tab, false);
1325                 }
1326         } catch (e) { }
1327
1328         if (transport.responseText) {
1329                 notify_info(transport.responseText);
1330         }
1331 }
1332
1333 function infobox_callback2(transport) {
1334         try {
1335
1336                 debug("infobox_callback2");
1337
1338                 if (!getInitParam("infobox_disable_overlay")) {
1339                         Element.show("dialog_overlay");
1340                 }
1341
1342                 var box = document.getElementById('infoBox');
1343                 var shadow = document.getElementById('infoBoxShadow');
1344                 if (box) {
1345
1346                         box.innerHTML=transport.responseText;
1347                         if (shadow) {
1348                                 shadow.style.display = "block";
1349                         } else {
1350                                 box.style.display = "block";
1351                         }
1352                 }
1353
1354                 /* FIXME this needs to be moved out somewhere */
1355
1356                 if (document.getElementById("tags_choices")) {
1357                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1358                                 "backend.php?op=rpc&subop=completeTags",
1359                                 { tokens: ',', paramName: "search" });
1360                 }
1361
1362                 disableHotkeys();
1363
1364                 notify("");
1365         } catch (e) {
1366                 exception_error("infobox_callback2", e);
1367         }
1368 }
1369
1370 function createFilter() {
1371
1372         try {
1373
1374                 var form = document.forms['filter_add_form'];
1375                 var reg_exp = form.reg_exp.value;
1376
1377                 if (reg_exp == "") {
1378                         alert(__("Can't add filter: nothing to match on."));
1379                         return false;
1380                 }
1381
1382                 var query = Form.serialize("filter_add_form");
1383
1384                 // we can be called from some other tab in Prefs
1385                 if (typeof active_tab != 'undefined' && active_tab) {
1386                         active_tab = "filterConfig";
1387                 }
1388
1389                 new Ajax.Request("backend.php?" + query, {
1390                         onComplete: function (transport) {
1391                                 infobox_submit_callback2(transport);
1392                         } });
1393
1394                 return true;
1395
1396         } catch (e) {
1397                 exception_error("createFilter", e);
1398         }
1399 }
1400
1401 function toggleSubmitNotEmpty(e, submit_id) {
1402         try {
1403                 document.getElementById(submit_id).disabled = (e.value == "")
1404         } catch (e) {
1405                 exception_error("toggleSubmitNotEmpty", e);
1406         }
1407 }
1408
1409 function isValidURL(s) {
1410         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1411 }
1412
1413 function subscribeToFeed() {
1414
1415         var form = document.forms['feed_add_form'];
1416         var feed_url = form.feed_url.value;
1417
1418         if (feed_url == "") {
1419                 alert(__("Can't subscribe: no feed URL given."));
1420                 return false;
1421         }
1422
1423         notify_progress(__("Subscribing to feed..."), true);
1424
1425         closeInfoBox();
1426
1427         var feeds_doc = document;
1428
1429 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1430
1431         var query = Form.serialize("feed_add_form");
1432
1433         debug("subscribe q: " + query);
1434
1435         new Ajax.Request("backend.php", {
1436                 parameters: query,
1437                 onComplete: function(transport) {
1438                         dlg_frefresh_callback(transport);
1439                 } });
1440
1441         return false;
1442 }
1443
1444 function filterCR(e, f)
1445 {
1446      var key;
1447
1448      if(window.event)
1449           key = window.event.keyCode;     //IE
1450      else
1451           key = e.which;     //firefox
1452
1453         if (key == 13) {
1454                 if (typeof f != 'undefined') {
1455                         f();
1456                         return false;
1457                 } else {
1458                         return false;
1459                 }
1460         } else {
1461                 return true;
1462         }
1463 }
1464
1465 var debug_last_class = "even";
1466
1467 function debug(msg) {
1468
1469         if (debug_last_class == "even") {
1470                 debug_last_class = "odd";
1471         } else {
1472                 debug_last_class = "even";
1473         }
1474
1475         var c = document.getElementById('debug_output');
1476         if (c && Element.visible(c)) {
1477                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1478                         c.removeChild(c.lastChild);
1479                 }
1480
1481                 var d = new Date();
1482                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1483                         ":" + leading_zero(d.getSeconds());
1484                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1485                         msg + "</li>" + c.innerHTML;
1486         }
1487 }
1488
1489 function getInitParam(key) {
1490         return init_params[key];
1491 }
1492
1493 function storeInitParam(key, value) {
1494         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1495         init_params[key] = value;
1496 }
1497
1498 function fatalError(code, msg, ext_info) {
1499         try {
1500
1501                 if (code == 6) {
1502                         window.location.href = "tt-rss.php";
1503                 } else if (code == 5) {
1504                         window.location.href = "update.php";
1505                 } else {
1506
1507                         if (msg == "") msg = "Unknown error";
1508
1509                         var ebc = document.getElementById("xebContent");
1510
1511                         if (ebc) {
1512
1513                                 Element.show("dialog_overlay");
1514                                 Element.show("errorBoxShadow");
1515                                 Element.hide("xebBtn");
1516
1517                                 if (ext_info) {
1518                                         if (ext_info.responseText) {
1519                                                 ext_info = ext_info.responseText;
1520                                         }
1521                                 }
1522
1523                                 ebc.innerHTML =
1524                                         "<div><b>Error message:</b></div>" +
1525                                         "<pre>" + msg + "</pre>" +
1526                                         "<div><b>Additional information:</b></div>" +
1527                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1528                         }
1529                 }
1530
1531         } catch (e) {
1532                 exception_error("fatalError", e);
1533         }
1534 }
1535
1536 function getFeedName(id, is_cat) {
1537         var e;
1538
1539         if (is_cat) {
1540                 e = document.getElementById("FCATN-" + id);
1541         } else {
1542                 e = document.getElementById("FEEDN-" + id);
1543         }
1544         if (e) {
1545                 return e.innerHTML.stripTags();
1546         } else {
1547                 return null;
1548         }
1549 }
1550
1551 function filterDlgCheckType(sender) {
1552
1553         try {
1554
1555                 var ftype = sender[sender.selectedIndex].value;
1556
1557                 var form = document.forms["filter_add_form"];
1558
1559                 if (!form) {
1560                         form = document.forms["filter_edit_form"];
1561                 }
1562
1563                 if (!form) {
1564                         debug("filterDlgCheckType: can't find form!");
1565                         return;
1566                 }
1567
1568                 // if selected filter type is 5 (Date) enable the modifier dropbox
1569                 if (ftype == 5) {
1570                         Element.show("filter_dlg_date_mod_box");
1571                         Element.show("filter_dlg_date_chk_box");
1572                 } else {
1573                         Element.hide("filter_dlg_date_mod_box");
1574                         Element.hide("filter_dlg_date_chk_box");
1575
1576                 }
1577
1578         } catch (e) {
1579                 exception_error("filterDlgCheckType", e);
1580         }
1581
1582 }
1583
1584 function filterDlgCheckAction(sender) {
1585
1586         try {
1587
1588                 var action = sender[sender.selectedIndex].value;
1589
1590                 var form = document.forms["filter_add_form"];
1591
1592                 if (!form) {
1593                         form = document.forms["filter_edit_form"];
1594                 }
1595
1596                 if (!form) {
1597                         debug("filterDlgCheckAction: can't find form!");
1598                         return;
1599                 }
1600
1601                 var action_param = document.getElementById("filter_dlg_param_box");
1602
1603                 if (!action_param) {
1604                         debug("filterDlgCheckAction: can't find action param box!");
1605                         return;
1606                 }
1607
1608                 // if selected action supports parameters, enable params field
1609                 if (action == 4 || action == 6 || action == 7) {
1610                         Element.show(action_param);
1611                         if (action != 7) {
1612                                 Element.show(form.action_param);
1613                                 Element.hide(form.action_param_label);
1614                         } else {
1615                                 Element.show(form.action_param_label);
1616                                 Element.hide(form.action_param);
1617                         }
1618                 } else {
1619                         Element.hide(action_param);
1620                 }
1621
1622         } catch (e) {
1623                 exception_error("filterDlgCheckAction", e);
1624         }
1625
1626 }
1627
1628 function filterDlgCheckDate() {
1629         try {
1630                 var form = document.forms["filter_add_form"];
1631
1632                 if (!form) {
1633                         form = document.forms["filter_edit_form"];
1634                 }
1635
1636                 if (!form) {
1637                         debug("filterDlgCheckAction: can't find form!");
1638                         return;
1639                 }
1640
1641                 var reg_exp = form.reg_exp.value;
1642
1643                 var query = "backend.php?op=rpc&subop=checkDate&date=" + reg_exp;
1644
1645                 new Ajax.Request(query, {
1646                         onComplete: function(transport) {
1647
1648                                 var form = document.forms["filter_add_form"];
1649
1650                                 if (!form) {
1651                                         form = document.forms["filter_edit_form"];
1652                                 }
1653
1654                                 if (transport.responseXML) {
1655                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1656
1657                                         if (result && result.firstChild) {
1658                                                 if (result.firstChild.nodeValue == "1") {
1659
1660                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1661
1662                                                         return;
1663                                                 }
1664                                         }
1665                                 }
1666
1667                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1668
1669                         } });
1670
1671
1672         } catch (e) {
1673                 exception_error("filterDlgCheckDate", e);
1674         }
1675 }
1676
1677 function explainError(code) {
1678         return displayDlg("explainError", code);
1679 }
1680
1681 // this only searches loaded headlines list, not in CDM
1682 function getRelativePostIds(id, limit) {
1683
1684         if (!limit) limit = 3;
1685
1686         debug("getRelativePostIds: " + id + " limit=" + limit);
1687
1688         var ids = new Array();
1689         var container = document.getElementById("headlinesList");
1690
1691         if (container) {
1692                 var rows = container.rows;
1693
1694                 for (var i = 0; i < rows.length; i++) {
1695                         var r_id = rows[i].id.replace("RROW-", "");
1696
1697                         if (r_id == id) {
1698                                 for (var k = 1; k <= limit; k++) {
1699                                         var nid = false;
1700
1701                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1702                                         if (nid) ids.push(nid);
1703
1704                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1705                                         if (nid) ids.push(nid);
1706                                 }
1707
1708                                 return ids;
1709                         }
1710                 }
1711         }
1712
1713         return false;
1714 }
1715
1716 function openArticleInNewWindow(id) {
1717         try {
1718                 debug("openArticleInNewWindow: " + id);
1719
1720                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1721                 var wname = "ttrss_article_" + id;
1722
1723                 debug(query + " " + wname);
1724
1725                 var w = window.open("", wname);
1726
1727                 if (!w) notify_error("Failed to open window for the article");
1728
1729                 new Ajax.Request(query, {
1730                         onComplete: function(transport) {
1731                                 open_article_callback(transport);
1732                         } });
1733
1734
1735         } catch (e) {
1736                 exception_error("openArticleInNewWindow", e);
1737         }
1738 }
1739
1740 /* http://textsnippets.com/posts/show/835 */
1741
1742 Position.GetWindowSize = function(w) {
1743         w = w ? w : window;
1744         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1745         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1746         return [width, height]
1747 }
1748
1749 /* http://textsnippets.com/posts/show/836 */
1750
1751 Position.Center = function(element, parent) {
1752         var w, h, pw, ph;
1753         var d = Element.getDimensions(element);
1754         w = d.width;
1755         h = d.height;
1756         Position.prepare();
1757         if (!parent) {
1758                 var ws = Position.GetWindowSize();
1759                 pw = ws[0];
1760                 ph = ws[1];
1761         } else {
1762                 pw = parent.offsetWidth;
1763                 ph = parent.offsetHeight;
1764         }
1765         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1766         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1767 }
1768
1769
1770 function labeltest_callback(transport) {
1771         try {
1772                 var container = document.getElementById('label_test_result');
1773
1774                 container.innerHTML = transport.responseText;
1775                 if (!Element.visible(container)) {
1776                         Effect.SlideDown(container, { duration : 0.5 });
1777                 }
1778
1779                 notify("");
1780         } catch (e) {
1781                 exception_error("labeltest_callback", e);
1782         }
1783 }
1784
1785 function labelTest() {
1786
1787         try {
1788                 var container = document.getElementById('label_test_result');
1789
1790                 var form = document.forms['label_edit_form'];
1791
1792                 var sql_exp = form.sql_exp.value;
1793                 var description = form.description.value;
1794
1795                 notify_progress("Loading, please wait...");
1796
1797                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1798                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1799
1800                 new Ajax.Request(query, {
1801                         onComplete: function (transport) {
1802                                 labeltest_callback(transport);
1803                         } });
1804
1805                 return false;
1806
1807         } catch (e) {
1808                 exception_error("labelTest", e);
1809         }
1810 }
1811
1812 function isCdmMode() {
1813         return !document.getElementById("headlinesList");
1814 }
1815
1816 function getSelectedArticleIds2() {
1817         var rows = new Array();
1818         var cdm_mode = isCdmMode();
1819
1820         if (cdm_mode) {
1821                 rows = cdmGetSelectedArticles();
1822         } else {
1823                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1824         }
1825
1826         var ids = new Array();
1827
1828         for (var i = 0; i < rows.length; i++) {
1829                 var chk = document.getElementById("RCHK-" + rows[i]);
1830                 if (chk && chk.checked) {
1831                         ids.push(rows[i]);
1832                 }
1833         }
1834
1835         return ids;
1836 }
1837
1838 function displayHelpInfobox(topic_id) {
1839
1840         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1841
1842         var w = window.open(url, "ttrss_help",
1843                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1844
1845 }
1846
1847 function focus_element(id) {
1848         try {
1849                 var e = document.getElementById(id);
1850                 if (e) e.focus();
1851         } catch (e) {
1852                 exception_error("focus_element", e);
1853         }
1854         return false;
1855 }
1856
1857 function loading_set_progress(p) {
1858         try {
1859                 if (p < last_progress_point || !Element.visible("overlay")) return;
1860
1861                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1862
1863                 var o = document.getElementById("l_progress_i");
1864
1865 //              o.style.width = (p * 2) + "px";
1866
1867                 new Effect.Scale(o, p, {
1868                         scaleY : false,
1869                         scaleFrom : last_progress_point,
1870                         scaleMode: { originalWidth : 200 },
1871                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1872
1873                 last_progress_point = p;
1874
1875         } catch (e) {
1876                 exception_error("loading_set_progress", e);
1877         }
1878 }
1879
1880 function remove_splash() {
1881         if (Element.visible("overlay")) {
1882                 debug("about to remove splash, OMG!");
1883                 Element.hide("overlay");
1884                 debug("removed splash!");
1885         }
1886 }
1887
1888 function addLabelExample() {
1889         try {
1890                 var form = document.forms["label_edit_form"];
1891
1892                 var text = form.sql_exp;
1893                 var op = form.label_fields[form.label_fields.selectedIndex];
1894                 var p = form.label_fields_param;
1895
1896                 if (op) {
1897                         op = op.value;
1898
1899                         var tmp = "";
1900
1901                         if (text.value != "") {
1902                                 if (text.value.substring(text.value.length-3, 3).toUpperCase() != "AND") {
1903                                         tmp = " AND ";
1904                                 } else {
1905                                         tmp = " ";
1906                                 }
1907                         }
1908
1909                         if (op == "unread") {
1910                                 tmp = tmp + "unread = true";
1911                         }
1912
1913                         if (op == "updated") {
1914                                 tmp = tmp + "last_read is null and unread = false";
1915                         }
1916
1917                         if (op == "kw_title") {
1918                                 if (p.value == "") {
1919                                         alert("This action requires a parameter.");
1920                                         return false;
1921                                 }
1922                                 tmp = tmp + "ttrss_entries.title like '%"+p.value+"%'";
1923                         }
1924
1925                         if (op == "kw_content") {
1926                                 if (p.value == "") {
1927                                         alert("This action requires a parameter.");
1928                                         return false;
1929                                 }
1930
1931                                 tmp = tmp + "ttrss_entries.content like '%"+p.value+"%'";
1932                         }
1933
1934                         if (op == "scoreE") {
1935                                 if (isNaN(parseInt(p.value))) {
1936                                         alert("This action expects numeric parameter.");
1937                                         return false;
1938                                 }
1939                                 tmp = tmp + "score = " + p.value;
1940                         }
1941
1942                         if (op == "scoreG") {
1943                                 if (isNaN(parseInt(p.value))) {
1944                                         alert("This action expects numeric parameter.");
1945                                         return false;
1946                                 }
1947                                 tmp = tmp + "score > " + p.value;
1948                         }
1949
1950                         if (op == "scoreL") {
1951                                 if (isNaN(parseInt(p.value))) {
1952                                         alert("This action expects numeric parameter.");
1953                                         return false;
1954                                 }
1955                                 tmp = tmp + "score < " + p.value;
1956                         }
1957
1958                         if (op == "newerD") {
1959                                 if (isNaN(parseInt(p.value))) {
1960                                         alert("This action expects numeric parameter.");
1961                                         return false;
1962                                 }
1963                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" days'";
1964                         }
1965
1966                         if (op == "newerH") {
1967                                 if (isNaN(parseInt(p.value))) {
1968                                         alert("This action expects numeric parameter.");
1969                                         return false;
1970                                 }
1971
1972                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" hours'";
1973                         }
1974
1975                         text.value = text.value + tmp;
1976
1977                         p.value = "";
1978
1979                 }
1980
1981         } catch (e) {
1982                 exception_error("addLabelExample", e);
1983         }
1984
1985         return false;
1986 }
1987
1988 function labelFieldsCheck(elem) {
1989         try {
1990                 var op = elem[elem.selectedIndex].value;
1991
1992                 var p = document.forms["label_edit_form"].label_fields_param;
1993
1994                 if (op == "kw_title" || op == "kw_content" || op == "scoreL" ||
1995                                 op == "scoreG" ||       op == "scoreE" || op == "newerD" ||
1996                                 op == "newerH" ) {
1997                         Element.show(p);
1998                 } else {
1999                         Element.hide(p);
2000                 }
2001
2002         } catch (e) {
2003                 exception_error("labelFieldsCheck", e);
2004
2005         }
2006 }
2007
2008 function getSelectedFeedsFromBrowser() {
2009
2010         var list = document.getElementById("browseFeedList");
2011         if (!list) list = document.getElementById("browseBigFeedList");
2012
2013         var selected = new Array();
2014
2015         for (i = 0; i < list.childNodes.length; i++) {
2016                 var child = list.childNodes[i];
2017                 if (child.id && child.id.match("FBROW-")) {
2018                         var id = child.id.replace("FBROW-", "");
2019
2020                         var cb = document.getElementById("FBCHK-" + id);
2021
2022                         if (cb.checked) {
2023                                 selected.push(id);
2024                         }
2025                 }
2026         }
2027
2028         return selected;
2029 }
2030
2031 function updateFeedBrowser() {
2032         try {
2033
2034                 var query = "backend.php?op=rpc&subop=feedBrowser";
2035
2036                 var search = document.getElementById("feed_browser_search");
2037                 var limit = document.getElementById("feed_browser_limit");
2038
2039                 if (limit) {
2040                         query = query + "&limit=" + limit[limit.selectedIndex].value;
2041                 }
2042
2043                 if (search) {
2044                         query = query + "&search=" + param_escape(search.value);
2045                 }
2046
2047                 notify_progress("Loading, please wait...", true);
2048
2049                 new Ajax.Request(query, {
2050                         onComplete: function(transport) {
2051                                 notify('');
2052
2053                                 var c = document.getElementById("browseFeedList");
2054                                 var r = transport.responseXML.getElementsByTagName("content")[0];
2055                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
2056                                 var sb = document.getElementById("feed_browser_subscribe");
2057
2058                                 if (c && r) {
2059                                         c.innerHTML = r.firstChild.nodeValue;
2060                                 }
2061
2062                                 if (nr && sb) {
2063                                         if (nr.getAttribute("value") > 0) {
2064                                                 sb.disabled = false;
2065                                         } else {
2066                                                 sb.disabled = true;
2067                                         }
2068                                 }
2069
2070                         } });
2071
2072
2073         } catch (e) {
2074                 exception_error("updateFeedBrowser", e);
2075         }
2076 }
2077
2078 function browseFeeds(limit) {
2079
2080         try {
2081
2082                 var query = "backend.php?op=pref-feeds&subop=browse";
2083
2084                 notify_progress("Loading, please wait...", true);
2085
2086                 new Ajax.Request(query, {
2087                         onComplete: function(transport) {
2088                                 infobox_callback2(transport);
2089                         } });
2090
2091                 return false;
2092         } catch (e) {
2093                 exception_error("browseFeeds", e);
2094         }
2095 }
2096
2097 function transport_error_check(transport) {
2098         try {
2099                 if (transport.responseXML) {
2100                         var error = transport.responseXML.getElementsByTagName("error")[0];
2101
2102                         if (error) {
2103                                 var code = error.getAttribute("error-code");
2104                                 var msg = error.getAttribute("error-msg");
2105                                 if (code != 0) {
2106                                         fatalError(code, msg);
2107                                         return false;
2108                                 }
2109                         }
2110                 }
2111         } catch (e) {
2112                 exception_error("check_for_error_xml", e);
2113         }
2114         return true;
2115 }
2116
2117 function strip_tags(s) {
2118         return s.replace(/<\/?[^>]+(>|$)/g, "");
2119 }
2120
2121 function truncate_string(s, length) {
2122         if (!length) length = 30;
2123         var tmp = s.substring(0, length);
2124         if (s.length > length) tmp += "&hellip;";
2125         return tmp;
2126 }