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         if (!ext_info) ext_info = "N/A";
  22
  23         disableHotkeys();
  24
  25         try {
  26
  27                 var ebc = $("xebContent");
  28
  29                 if (ebc) {
  30
  31                         Element.show("dialog_overlay");
  32                         Element.show("errorBoxShadow");
  33
  34                         if (ext_info) {
  35                                 if (ext_info.responseText) {
  36                                         ext_info = ext_info.responseText;
  37                                 }
  38                         }
  39
  40                         ebc.innerHTML =
  41                                 "<div><b>Error message:</b></div>" +
  42                                 "<pre>" + msg + "</pre>" +
  43                                 "<div><b>Additional information:</b></div>" +
  44                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  45
  46                 } else {
  47                         alert(msg);
  48                 }
  49
  50         } catch (e) {
  51                 alert(msg);
  52
  53         }
  54
  55 }
  56
  57 function format_exception_error(location, e) {
  58         var msg;
  59
  60         if (e.fileName) {
  61                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  62
  63                 msg = "Exception: " + e.name + ", " + e.message +
  64                         "\nFunction: " + location + "()" +
  65                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  66
  67         } else if (e.description) {
  68                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  69         } else {
  70                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  71         }
  72
  73         debug("<b>EXCEPTION: " + msg + "</b>");
  74
  75         return msg;
  76 }
  77
  78
  79 function disableHotkeys() {
  80         hotkeys_enabled = false;
  81 }
  82
  83 function enableHotkeys() {
  84         hotkeys_enabled = true;
  85 }
  86
  87 function open_article_callback(transport) {
  88         try {
  89
  90                 if (transport.responseXML) {
  91
  92                         var link = transport.responseXML.getElementsByTagName("link")[0];
  93                         var id = transport.responseXML.getElementsByTagName("id")[0];
  94
  95                         debug("open_article_callback, received link: " + link);
  96
  97                         if (link && id) {
  98
  99                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
 100
 101                                 debug("link url: " + link.firstChild.nodeValue + ", wname " + wname);
 102
 103                                 var w = window.open(link.firstChild.nodeValue, wname);
 104
 105                                 if (!w) { notify_error("Failed to load article in new window"); }
 106
 107                                 if (id) {
 108                                         id = id.firstChild.nodeValue;
 109                                         if (!$("headlinesList")) {
 110                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
 111                                         }
 112                                 }
 113                         } else {
 114                                 notify_error("Can't open article: received invalid article link");
 115                         }
 116                 } else {
 117                         notify_error("Can't open article: received invalid XML");
 118                 }
 119
 120         } catch (e) {
 121                 exception_error("open_article_callback", e);
 122         }
 123 }
 124
 125 function param_escape(arg) {
 126         if (typeof encodeURIComponent != 'undefined')
 127                 return encodeURIComponent(arg);
 128         else
 129                 return escape(arg);
 130 }
 131
 132 function param_unescape(arg) {
 133         if (typeof decodeURIComponent != 'undefined')
 134                 return decodeURIComponent(arg);
 135         else
 136                 return unescape(arg);
 137 }
 138
 139 function delay(gap) {
 140         var then,now;
 141         then=new Date().getTime();
 142         now=then;
 143         while((now-then)<gap) {
 144                 now=new Date().getTime();
 145         }
 146 }
 147
 148 var notify_hide_timerid = false;
 149
 150 function hide_notify() {
 151         var n = $("notify");
 152         if (n) {
 153                 n.style.display = "none";
 154         }
 155 }
 156
 157 function notify_silent_next() {
 158         notify_silent = true;
 159 }
 160
 161 function notify_real(msg, no_hide, n_type) {
 162
 163         if (notify_silent) {
 164                 notify_silent = false;
 165                 return;
 166         }
 167
 168         var n = $("notify");
 169         var nb = $("notify_body");
 170
 171         if (!n || !nb) return;
 172
 173         if (notify_hide_timerid) {
 174                 window.clearTimeout(notify_hide_timerid);
 175         }
 176
 177         if (msg == "") {
 178                 if (n.style.display == "block") {
 179                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 180                 }
 181                 return;
 182         } else {
 183                 n.style.display = "block";
 184         }
 185
 186         /* types:
 187
 188                 1 - generic
 189                 2 - progress
 190                 3 - error
 191                 4 - info
 192
 193         */
 194
 195         if (typeof __ != 'undefined') {
 196                 msg = __(msg);
 197         }
 198
 199         if (n_type == 1) {
 200                 n.className = "notify";
 201         } else if (n_type == 2) {
 202                 n.className = "notifyProgress";
 203                 msg = "<img src='images/indicator_white.gif'> " + msg;
 204         } else if (n_type == 3) {
 205                 n.className = "notifyError";
 206                 msg = "<img src='images/sign_excl.gif'> " + msg;
 207         } else if (n_type == 4) {
 208                 n.className = "notifyInfo";
 209                 msg = "<img src='images/sign_info.gif'> " + msg;
 210         }
 211
 212 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 213
 214         nb.innerHTML = msg;
 215
 216         if (!no_hide) {
 217                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 218         }
 219 }
 220
 221 function notify(msg, no_hide) {
 222         notify_real(msg, no_hide, 1);
 223 }
 224
 225 function notify_progress(msg, no_hide) {
 226         notify_real(msg, no_hide, 2);
 227 }
 228
 229 function notify_error(msg, no_hide) {
 230         notify_real(msg, no_hide, 3);
 231
 232 }
 233
 234 function notify_info(msg, no_hide) {
 235         notify_real(msg, no_hide, 4);
 236 }
 237
 238 function printLockingError() {
 239         notify_info("Please wait until operation finishes.");
 240 }
 241
 242 function cleanSelected(element) {
 243         var content = $(element);
 244
 245         for (i = 0; i < content.rows.length; i++) {
 246                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 247         }
 248 }
 249
 250 function getVisibleUnreadHeadlines() {
 251         var content = $("headlinesList");
 252
 253         var rows = new Array();
 254
 255         if (!content) return rows;
 256
 257         for (i = 0; i < content.rows.length; i++) {
 258                 var row_id = content.rows[i].id.replace("RROW-", "");
 259                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 260                                 rows.push(row_id);
 261                 }
 262         }
 263         return rows;
 264 }
 265
 266 function getVisibleHeadlineIds() {
 267
 268         var content = $("headlinesList");
 269
 270         var rows = new Array();
 271
 272         if (!content) return rows;
 273
 274         for (i = 0; i < content.rows.length; i++) {
 275                 var row_id = content.rows[i].id.replace("RROW-", "");
 276                 if (row_id.length > 0) {
 277                                 rows.push(row_id);
 278                 }
 279         }
 280         return rows;
 281 }
 282
 283 function getFirstVisibleHeadlineId() {
 284         if (isCdmMode()) {
 285                 var rows = cdmGetVisibleArticles();
 286                 return rows[0];
 287         } else {
 288                 var rows = getVisibleHeadlineIds();
 289                 return rows[0];
 290         }
 291 }
 292
 293 function getLastVisibleHeadlineId() {
 294         if (isCdmMode()) {
 295                 var rows = cdmGetVisibleArticles();
 296                 return rows[rows.length-1];
 297         } else {
 298                 var rows = getVisibleHeadlineIds();
 299                 return rows[rows.length-1];
 300         }
 301 }
 302
 303 function markHeadline(id) {
 304         var row = $("RROW-" + id);
 305         if (row) {
 306                 var is_active = false;
 307
 308                 if (row.className.match("Active")) {
 309                         is_active = true;
 310                 }
 311                 row.className = row.className.replace("Selected", "");
 312                 row.className = row.className.replace("Active", "");
 313                 row.className = row.className.replace("Insensitive", "");
 314
 315                 if (is_active) {
 316                         row.className = row.className = "Active";
 317                 }
 318
 319                 var check = $("RCHK-" + id);
 320
 321                 if (check) {
 322                         check.checked = true;
 323                 }
 324
 325                 row.className = row.className + "Selected";
 326
 327         }
 328 }
 329
 330 function getFeedIds() {
 331         var content = $("feedsList");
 332
 333         var rows = new Array();
 334
 335         for (i = 0; i < content.rows.length; i++) {
 336                 var id = content.rows[i].id.replace("FEEDR-", "");
 337                 if (id.length > 0) {
 338                         rows.push(id);
 339                 }
 340         }
 341
 342         return rows;
 343 }
 344
 345 function setCookie(name, value, lifetime, path, domain, secure) {
 346
 347         var d = false;
 348
 349         if (lifetime) {
 350                 d = new Date();
 351                 d.setTime(d.getTime() + (lifetime * 1000));
 352         }
 353
 354         debug("setCookie: " + name + " => " + value + ": " + d);
 355
 356         int_setCookie(name, value, d, path, domain, secure);
 357
 358 }
 359
 360 function int_setCookie(name, value, expires, path, domain, secure) {
 361         document.cookie= name + "=" + escape(value) +
 362                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 363                 ((path) ? "; path=" + path : "") +
 364                 ((domain) ? "; domain=" + domain : "") +
 365                 ((secure) ? "; secure" : "");
 366 }
 367
 368 function delCookie(name, path, domain) {
 369         if (getCookie(name)) {
 370                 document.cookie = name + "=" +
 371                 ((path) ? ";path=" + path : "") +
 372                 ((domain) ? ";domain=" + domain : "" ) +
 373                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 374         }
 375 }
 376
 377
 378 function getCookie(name) {
 379
 380         var dc = document.cookie;
 381         var prefix = name + "=";
 382         var begin = dc.indexOf("; " + prefix);
 383         if (begin == -1) {
 384             begin = dc.indexOf(prefix);
 385             if (begin != 0) return null;
 386         }
 387         else {
 388             begin += 2;
 389         }
 390         var end = document.cookie.indexOf(";", begin);
 391         if (end == -1) {
 392             end = dc.length;
 393         }
 394         return unescape(dc.substring(begin + prefix.length, end));
 395 }
 396
 397 function disableContainerChildren(id, disable, doc) {
 398
 399         if (!doc) doc = document;
 400
 401         var container = $(id);
 402
 403         if (!container) {
 404                 //alert("disableContainerChildren: element " + id + " not found");
 405                 return;
 406         }
 407
 408         for (var i = 0; i < container.childNodes.length; i++) {
 409                 var child = container.childNodes[i];
 410
 411                 try {
 412                         child.disabled = disable;
 413                 } catch (E) {
 414
 415                 }
 416
 417                 if (disable) {
 418                         if (child.className && child.className.match("button")) {
 419                                 child.className = "disabledButton";
 420                         }
 421                 } else {
 422                         if (child.className && child.className.match("disabledButton")) {
 423                                 child.className = "button";
 424                         }
 425                 }
 426         }
 427
 428 }
 429
 430 function gotoPreferences() {
 431         document.location.href = "prefs.php";
 432 }
 433
 434 function gotoMain() {
 435         document.location.href = "tt-rss.php";
 436 }
 437
 438 function gotoExportOpml() {
 439         document.location.href = "opml.php?op=Export";
 440 }
 441
 442 function parse_counters(reply, scheduled_call) {
 443         try {
 444
 445                 var feeds_found = 0;
 446
 447                 var elems = reply.getElementsByTagName("counter");
 448
 449                 for (var l = 0; l < elems.length; l++) {
 450
 451                         var id = elems[l].getAttribute("id");
 452                         var t = elems[l].getAttribute("type");
 453                         var ctr = elems[l].getAttribute("counter");
 454                         var error = elems[l].getAttribute("error");
 455                         var has_img = elems[l].getAttribute("hi");
 456                         var updated = elems[l].getAttribute("updated");
 457                         var title = elems[l].getAttribute("title");
 458                         var xmsg = elems[l].getAttribute("xmsg");
 459
 460                         if (id == "global-unread") {
 461
 462                                 if (ctr > global_unread) {
 463                                         offlineDownloadStart(1);
 464                                 }
 465
 466                                 global_unread = ctr;
 467                                 updateTitle();
 468                                 continue;
 469                         }
 470
 471                         if (id == "subscribed-feeds") {
 472                                 feeds_found = ctr;
 473                                 continue;
 474                         }
 475
 476                         if (t == "category") {
 477                                 var catctr = $("FCATCTR-" + id);
 478                                 if (catctr) {
 479                                         catctr.innerHTML = "(" + ctr + ")";
 480                                         if (ctr > 0) {
 481                                                 catctr.className = "catCtrHasUnread";
 482                                         } else {
 483                                                 catctr.className = "catCtrNoUnread";
 484                                         }
 485                                 }
 486                                 continue;
 487                         }
 488
 489                         var feedctr = $("FEEDCTR-" + id);
 490                         var feedu = $("FEEDU-" + id);
 491                         var feedr = $("FEEDR-" + id);
 492                         var feed_img = $("FIMG-" + id);
 493                         var feedlink = $("FEEDL-" + id);
 494                         var feedupd = $("FLUPD-" + id);
 495
 496                         if (updated && feedlink) {
 497                                 if (error) {
 498                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 499                                 } else {
 500                                         feedlink.title = "Updated: " + updated;
 501                                 }
 502                         }
 503
 504                         if (feedupd) {
 505                                 if (!updated) updated = "";
 506
 507                                 if (error) {
 508                                         if (xmsg) {
 509                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 510                                         } else {
 511                                                 feedupd.innerHTML = updated + " (Error)";
 512                                         }
 513                                 } else {
 514                                         if (xmsg) {
 515                                                 feedupd.innerHTML = updated + " " + xmsg;
 516                                         } else {
 517                                                 feedupd.innerHTML = updated;
 518                                         }
 519                                 }
 520                         }
 521
 522                         if (has_img && feed_img) {
 523                                 if (!feed_img.src.match(id + ".ico")) {
 524                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 525                                 }
 526                         }
 527
 528                         if (feedlink && title) {
 529                                 feedlink.innerHTML = title;
 530                         }
 531
 532                         if (feedctr && feedu && feedr) {
 533
 534                                 if (parseInt(ctr) > 0 &&
 535                                                 parseInt(feedu.innerHTML) < parseInt(ctr) &&
 536                                                 id == getActiveFeedId() && scheduled_call) {
 537
 538                                         displayNewContentPrompt(id);
 539                                 }
 540
 541                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 542
 543                                 feedu.innerHTML = ctr;
 544
 545                                 if (error) {
 546                                         feedr.className = feedr.className.replace("feed", "error");
 547                                 } else if (id > 0) {
 548                                         feedr.className = feedr.className.replace("error", "feed");
 549                                 }
 550
 551                                 if (ctr > 0) {
 552                                         feedctr.className = "feedCtrHasUnread";
 553                                         if (!feedr.className.match("Unread")) {
 554                                                 var is_selected = feedr.className.match("Selected");
 555
 556                                                 feedr.className = feedr.className.replace("Selected", "");
 557                                                 feedr.className = feedr.className.replace("Unread", "");
 558
 559                                                 feedr.className = feedr.className + "Unread";
 560
 561                                                 if (is_selected) {
 562                                                         feedr.className = feedr.className + "Selected";
 563                                                 }
 564
 565                                         }
 566
 567                                         if (row_needs_hl) {
 568                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 569                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 570
 571                                                 cache_invalidate("F:" + id);
 572                                         }
 573                                 } else {
 574                                         feedctr.className = "feedCtrNoUnread";
 575                                         feedr.className = feedr.className.replace("Unread", "");
 576                                 }
 577                         }
 578                 }
 579
 580                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 581
 582                 var feeds_stored = number_of_feeds;
 583
 584                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 585
 586                 if (feeds_stored != feeds_found) {
 587                         number_of_feeds = feeds_found;
 588
 589                         if (feeds_stored != 0 && feeds_found != 0) {
 590                                 debug("Subscribed feed number changed, refreshing feedlist");
 591                                 setTimeout('updateFeedList(false, false)', 50);
 592                         }
 593                 } else {
 594 /*                      var fl = $("feeds-frame").innerHTML;
 595                         if (fl) {
 596                                 cache_invalidate("FEEDLIST");
 597                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 598                         } */
 599                 }
 600
 601         } catch (e) {
 602                 exception_error("parse_counters", e);
 603         }
 604 }
 605
 606 function parse_counters_reply(transport, scheduled_call) {
 607
 608         if (!transport.responseXML) {
 609                 notify_error("Backend did not return valid XML", true);
 610                 return;
 611         }
 612
 613         var reply = transport.responseXML.firstChild;
 614
 615         if (!reply) {
 616                 notify_error("Backend did not return expected XML object", true);
 617                 updateTitle("");
 618                 return;
 619         }
 620
 621         if (!transport_error_check(transport)) return;
 622
 623         var counters = reply.getElementsByTagName("counters")[0];
 624
 625         parse_counters(counters, scheduled_call);
 626
 627         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 628
 629         parse_runtime_info(runtime_info);
 630
 631         if (feedsSortByUnread()) {
 632                 resort_feedlist();
 633         }
 634
 635         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 636
 637 }
 638
 639 function all_counters_callback2(transport, async_call) {
 640         try {
 641                 if (async_call) async_counters_work = true;
 642
 643                 if (offline_mode) return;
 644
 645                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 646                 parse_counters_reply(transport);
 647                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 648
 649         } catch (e) {
 650                 exception_error("all_counters_callback2", e, transport);
 651         }
 652 }
 653
 654 function get_feed_unread(id) {
 655         try {
 656                 return parseInt($("FEEDU-" + id).innerHTML);
 657         } catch (e) {
 658                 return -1;
 659         }
 660 }
 661
 662 function get_cat_unread(id) {
 663         try {
 664                 var ctr = $("FCATCTR-" + id).innerHTML;
 665                 ctr = ctr.replace("(", "");
 666                 ctr = ctr.replace(")", "");
 667                 return parseInt(ctr);
 668         } catch (e) {
 669                 return -1;
 670         }
 671 }
 672
 673 function get_feed_entry_unread(elem) {
 674
 675         var id = elem.id.replace("FEEDR-", "");
 676
 677         if (id <= 0) {
 678                 return -1;
 679         }
 680
 681         try {
 682                 return parseInt($("FEEDU-" + id).innerHTML);
 683         } catch (e) {
 684                 return -1;
 685         }
 686 }
 687
 688 function get_feed_entry_name(elem) {
 689         var id = elem.id.replace("FEEDR-", "");
 690         return getFeedName(id);
 691 }
 692
 693
 694 function resort_category(node) {
 695
 696         try {
 697
 698                 debug("resort_category: " + node);
 699
 700                 var by_unread = feedsSortByUnread();
 701
 702                 var list = node.getElementsByTagName("LI");
 703
 704                 for (i = 0; i < list.length; i++) {
 705
 706                         for (j = i+1; j < list.length; j++) {
 707
 708                                 var tmp_val = get_feed_entry_unread(list[i]);
 709                                 var cur_val = get_feed_entry_unread(list[j]);
 710
 711                                 var tmp_name = get_feed_entry_name(list[i]);
 712                                 var cur_name = get_feed_entry_name(list[j]);
 713
 714                                 if ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name))) {
 715                                         tempnode_i = list[i].cloneNode(true);
 716                                         tempnode_j = list[j].cloneNode(true);
 717                                         node.replaceChild(tempnode_i, list[j]);
 718                                         node.replaceChild(tempnode_j, list[i]);
 719                                 }
 720                         }
 721                 }
 722
 723         } catch (e) {
 724                 exception_error("resort_category", e);
 725         }
 726
 727 }
 728
 729 function resort_feedlist() {
 730         debug("resort_feedlist");
 731
 732         if ($("FCATLIST--1")) {
 733
 734                 var lists = document.getElementsByTagName("UL");
 735
 736                 for (var i = 0; i < lists.length; i++) {
 737                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 738                                 resort_category(lists[i]);
 739                         }
 740                 }
 741
 742         } else {
 743                 //resort_category($("feedList"));
 744         }
 745 }
 746
 747 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 748   * * @author Sundar Dorai-Raj
 749   * * Email: sdoraira@vt.edu
 750   * * This program is free software; you can redistribute it and/or
 751   * * modify it under the terms of the GNU General Public License
 752   * * as published by the Free Software Foundation; either version 2
 753   * * of the License, or (at your option) any later version,
 754   * * provided that any use properly credits the author.
 755   * * This program is distributed in the hope that it will be useful,
 756   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 757   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 758   * * GNU General Public License for more details at http://www.gnu.org * * */
 759
 760   var numbers=".0123456789";
 761   function isNumeric(x) {
 762     // is x a String or a character?
 763     if(x.length>1) {
 764       // remove negative sign
 765       x=Math.abs(x)+"";
 766       for(j=0;j<x.length;j++) {
 767         // call isNumeric recursively for each character
 768         number=isNumeric(x.substring(j,j+1));
 769         if(!number) return number;
 770       }
 771       return number;
 772     }
 773     else {
 774       // if x is number return true
 775       if(numbers.indexOf(x)>=0) return true;
 776       return false;
 777     }
 778   }
 779
 780
 781 function hideOrShowFeeds(hide) {
 782
 783         try {
 784
 785         debug("hideOrShowFeeds: " + hide);
 786
 787         if ($("FCATLIST--1")) {
 788
 789                 var lists = document.getElementsByTagName("UL");
 790
 791                 for (var i = 0; i < lists.length; i++) {
 792                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 793
 794                                 var id = lists[i].id.replace("FCATLIST-", "");
 795                                 hideOrShowFeedsCategory(id, hide);
 796                         }
 797                 }
 798
 799         } else {
 800                 hideOrShowFeedsCategory(null, hide);
 801         }
 802
 803         } catch (e) {
 804                 exception_error("hideOrShowFeeds", e);
 805         }
 806 }
 807
 808 function hideOrShowFeedsCategory(id, hide) {
 809
 810         try {
 811
 812                 var node = null;
 813                 var cat_node = null;
 814
 815                 if (id) {
 816                         node = $("FCATLIST-" + id);
 817                         cat_node = $("FCAT-" + id);
 818                 } else {
 819                         node = $("feedList"); // no categories
 820                 }
 821
 822         //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 823
 824                 var cat_unread = 0;
 825
 826                 if (!node) {
 827                         debug("hideOrShowFeeds: passed node is null, aborting");
 828                         return;
 829                 }
 830
 831         //      debug("cat: " + node.id);
 832
 833                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 834                         for (i = 0; i < node.childNodes.length; i++) {
 835                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 836
 837                                 if (node.childNodes[i].style != undefined) {
 838
 839                                         var has_unread = (node.childNodes[i].className != "feed" &&
 840                                                 node.childNodes[i].className != "label" &&
 841                                                 !(!getInitParam("hide_read_shows_special") &&
 842                                                         node.childNodes[i].className == "virt") &&
 843                                                 node.childNodes[i].className != "error" &&
 844                                                 node.childNodes[i].className != "tag");
 845
 846         //                              debug(node.childNodes[i].id + " --> " + has_unread);
 847
 848                                         if (hide && !has_unread) {
 849                                                 //node.childNodes[i].style.display = "none";
 850                                                 var id = node.childNodes[i].id;
 851                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 852                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 853                                         }
 854
 855                                         if (!hide) {
 856                                                 node.childNodes[i].style.display = "list-item";
 857                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 858                                         }
 859
 860                                         if (has_unread) {
 861                                                 node.childNodes[i].style.display = "list-item";
 862                                                 cat_unread++;
 863                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 864                                                 //Effect.Highlight(node.childNodes[i]);
 865                                         }
 866                                 }
 867                         }
 868                 }
 869
 870         //      debug("end cat: " + node.id + " unread " + cat_unread);
 871
 872                 if (cat_node) {
 873
 874                         if (cat_unread == 0) {
 875                                 if (cat_node.style == undefined) {
 876                                         debug("ERROR: supplied cat_node " + cat_node +
 877                                                 " has no styles. WTF?");
 878                                         return;
 879                                 }
 880                                 if (hide) {
 881                                         //cat_node.style.display = "none";
 882                                         Effect.Fade(cat_node, {duration : 0.3,
 883                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 884                                 } else {
 885                                         cat_node.style.display = "list-item";
 886                                 }
 887                         } else {
 888                                 try {
 889                                         cat_node.style.display = "list-item";
 890                                 } catch (e) {
 891                                         debug(e);
 892                                 }
 893                         }
 894                 }
 895
 896 //      debug("unread for category: " + cat_unread);
 897
 898         } catch (e) {
 899                 exception_error("hideOrShowFeedsCategory", e);
 900         }
 901 }
 902
 903 function selectTableRow(r, do_select) {
 904         r.className = r.className.replace("Selected", "");
 905
 906         if (do_select) {
 907                 r.className = r.className + "Selected";
 908         }
 909 }
 910
 911 function selectTableRowById(elem_id, check_id, do_select) {
 912
 913         try {
 914
 915                 var row = $(elem_id);
 916
 917                 if (row) {
 918                         selectTableRow(row, do_select);
 919                 }
 920
 921                 var check = $(check_id);
 922
 923                 if (check) {
 924                         check.checked = do_select;
 925                 }
 926         } catch (e) {
 927                 exception_error("selectTableRowById", e);
 928         }
 929 }
 930
 931 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 932         classcheck, reset_others) {
 933
 934         var content = $(content_id);
 935
 936         if (!content) {
 937                 alert("[selectTableRows] Element " + content_id + " not found.");
 938                 return;
 939         }
 940
 941         for (i = 0; i < content.rows.length; i++) {
 942                 if (Element.visible(content.rows[i])) {
 943                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 944
 945                                 if (content.rows[i].id.match(prefix)) {
 946                                         selectTableRow(content.rows[i], do_select);
 947
 948                                         var row_id = content.rows[i].id.replace(prefix, "");
 949                                         var check = $(check_prefix + row_id);
 950
 951                                         if (check) {
 952                                                 check.checked = do_select;
 953                                         }
 954                                 } else if (reset_others) {
 955                                         selectTableRow(content.rows[i], false);
 956
 957                                         var row_id = content.rows[i].id.replace(prefix, "");
 958                                         var check = $(check_prefix + row_id);
 959
 960                                         if (check) {
 961                                                 check.checked = false;
 962                                         }
 963
 964                                 }
 965                         } else if (reset_others) {
 966                                 selectTableRow(content.rows[i], false);
 967
 968                                 var row_id = content.rows[i].id.replace(prefix, "");
 969                                 var check = $(check_prefix + row_id);
 970
 971                                 if (check) {
 972                                         check.checked = false;
 973                                 }
 974
 975                         }
 976                 }
 977         }
 978 }
 979
 980 function getSelectedTableRowIds(content_id, prefix) {
 981
 982         var content = $(content_id);
 983
 984         if (!content) {
 985                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 986                 return;
 987         }
 988
 989         var sel_rows = new Array();
 990
 991         for (i = 0; i < content.rows.length; i++) {
 992                 if (content.rows[i].id.match(prefix) &&
 993                                 content.rows[i].className.match("Selected")) {
 994
 995                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 996                         sel_rows.push(row_id);
 997                 }
 998         }
 999
1000         return sel_rows;
1001
1002 }
1003
1004 function toggleSelectRowById(sender, id) {
1005         var row = $(id);
1006
1007         if (sender.checked) {
1008                 if (!row.className.match("Selected")) {
1009                         row.className = row.className + "Selected";
1010                 }
1011         } else {
1012                 if (row.className.match("Selected")) {
1013                         row.className = row.className.replace("Selected", "");
1014                 }
1015         }
1016 }
1017
1018 function toggleSelectListRow(sender) {
1019         var parent_row = sender.parentNode;
1020
1021         if (sender.checked) {
1022                 if (!parent_row.className.match("Selected")) {
1023                         parent_row.className = parent_row.className + "Selected";
1024                 }
1025         } else {
1026                 if (parent_row.className.match("Selected")) {
1027                         parent_row.className = parent_row.className.replace("Selected", "");
1028                 }
1029         }
1030 }
1031
1032 function tSR(sender) {
1033         return toggleSelectRow(sender);
1034 }
1035
1036 function toggleSelectRow(sender) {
1037         var parent_row = sender.parentNode.parentNode;
1038
1039         if (sender.checked) {
1040                 if (!parent_row.className.match("Selected")) {
1041                         parent_row.className = parent_row.className + "Selected";
1042                 }
1043         } else {
1044                 if (parent_row.className.match("Selected")) {
1045                         parent_row.className = parent_row.className.replace("Selected", "");
1046                 }
1047         }
1048 }
1049
1050 function getNextUnreadCat(id) {
1051         try {
1052                 var rows = $("feedList").getElementsByTagName("LI");
1053                 var feeds = new Array();
1054
1055                 var unread_only = true;
1056                 var is_cat = true;
1057
1058                 for (var i = 0; i < rows.length; i++) {
1059                         if (rows[i].id.match("FCAT-")) {
1060                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1061
1062                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1063
1064                                         if (cat_id >= 0) {
1065                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1066                                                         feeds.push(cat_id);
1067                                                 }
1068                                         }
1069                                 }
1070                         }
1071                 }
1072
1073                 var idx = feeds.indexOf(id);
1074                 if (idx != -1 && idx < feeds.length) {
1075                         return feeds[idx+1];
1076                 } else {
1077                         return feeds.shift();
1078                 }
1079
1080         } catch (e) {
1081                 exception_error("getNextUnreadCat", e);
1082         }
1083 }
1084
1085 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1086         try {
1087
1088 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1089
1090                 var rows = $("feedList").getElementsByTagName("LI");
1091                 var feeds = new Array();
1092
1093                 for (var i = 0; i < rows.length; i++) {
1094                         if (rows[i].id.match("FEEDR-")) {
1095
1096                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1097
1098                                         if (!unread_only ||
1099                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1100                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1101                                         }
1102                                 }
1103                         }
1104
1105                         if (rows[i].id.match("FCAT-")) {
1106                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1107
1108                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1109
1110                                         if (cat_id >= 0) {
1111                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1112                                                         feeds.push("CAT:"+cat_id);
1113                                                 }
1114                                         }
1115                                 }
1116                         }
1117                 }
1118
1119 //              alert(feeds.toString());
1120
1121                 if (!id) {
1122                         if (direction == "next") {
1123                                 return feeds.shift();
1124                         } else {
1125                                 return feeds.pop();
1126                         }
1127                 } else {
1128                         if (direction == "next") {
1129                                 if (is_cat) id = "CAT:" + id;
1130                                 var idx = feeds.indexOf(id);
1131                                 if (idx != -1 && idx < feeds.length) {
1132                                         return feeds[idx+1];
1133                                 } else {
1134                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1135                                 }
1136                         } else {
1137                                 if (is_cat) id = "CAT:" + id;
1138                                 var idx = feeds.indexOf(id);
1139                                 if (idx > 0) {
1140                                         return feeds[idx-1];
1141                                 } else {
1142                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1143                                 }
1144                         }
1145
1146                 }
1147
1148         } catch (e) {
1149                 exception_error("getRelativeFeedId2", e);
1150         }
1151 }
1152
1153
1154 function getRelativeFeedId(list, id, direction, unread_only) {
1155         var rows = list.getElementsByTagName("LI");
1156         var feeds = new Array();
1157
1158         for (var i = 0; i < rows.length; i++) {
1159                 if (rows[i].id.match("FEEDR-")) {
1160
1161                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1162
1163                                 if (!unread_only ||
1164                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1165                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1166                                 }
1167                         }
1168                 }
1169         }
1170
1171         if (!id) {
1172                 if (direction == "next") {
1173                         return feeds.shift();
1174                 } else {
1175                         return feeds.pop();
1176                 }
1177         } else {
1178                 if (direction == "next") {
1179                         var idx = feeds.indexOf(id);
1180                         if (idx != -1 && idx < feeds.length) {
1181                                 return feeds[idx+1];
1182                         } else {
1183                                 return getRelativeFeedId(list, false, direction, unread_only);
1184                         }
1185                 } else {
1186                         var idx = feeds.indexOf(id);
1187                         if (idx > 0) {
1188                                 return feeds[idx-1];
1189                         } else {
1190                                 return getRelativeFeedId(list, false, direction, unread_only);
1191                         }
1192                 }
1193
1194         }
1195 }
1196
1197 function showBlockElement(id, h_id) {
1198         var elem = $(id);
1199
1200         if (elem) {
1201                 elem.style.display = "block";
1202
1203                 if (h_id) {
1204                         elem = $(h_id);
1205                         if (elem) {
1206                                 elem.style.display = "none";
1207                         }
1208                 }
1209         } else {
1210                 alert("[showBlockElement] can't find element with id " + id);
1211         }
1212 }
1213
1214 function appearBlockElement_afh(effect) {
1215
1216 }
1217
1218 function checkboxToggleElement(elem, id) {
1219         if (elem.checked) {
1220                 Effect.Appear(id, {duration : 0.5});
1221         } else {
1222                 Effect.Fade(id, {duration : 0.5});
1223         }
1224 }
1225
1226 function appearBlockElement(id, h_id) {
1227
1228         try {
1229                 if (h_id) {
1230                         Effect.Fade(h_id);
1231                 }
1232                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1233         } catch (e) {
1234                 exception_error("appearBlockElement", e);
1235         }
1236
1237 }
1238
1239 function hideParentElement(e) {
1240         e.parentNode.style.display = "none";
1241 }
1242
1243 function dropboxSelect(e, v) {
1244         for (i = 0; i < e.length; i++) {
1245                 if (e[i].value == v) {
1246                         e.selectedIndex = i;
1247                         break;
1248                 }
1249         }
1250 }
1251
1252 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1253 // bugfixed just a little bit :-)
1254 function getURLParam(strParamName){
1255   var strReturn = "";
1256   var strHref = window.location.href;
1257
1258   if (strHref.indexOf("#") == strHref.length-1) {
1259                 strHref = strHref.substring(0, strHref.length-1);
1260   }
1261
1262   if ( strHref.indexOf("?") > -1 ){
1263     var strQueryString = strHref.substr(strHref.indexOf("?"));
1264     var aQueryString = strQueryString.split("&");
1265     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1266       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1267         var aParam = aQueryString[iParam].split("=");
1268         strReturn = aParam[1];
1269         break;
1270       }
1271     }
1272   }
1273   return strReturn;
1274 }
1275
1276 function leading_zero(p) {
1277         var s = String(p);
1278         if (s.length == 1) s = "0" + s;
1279         return s;
1280 }
1281
1282 function closeErrorBox() {
1283
1284         if (Element.visible("errorBoxShadow")) {
1285                 Element.hide("dialog_overlay");
1286                 Element.hide("errorBoxShadow");
1287
1288                 enableHotkeys();
1289         }
1290
1291         return false;
1292 }
1293
1294 function closeInfoBox(cleanup) {
1295
1296         try {
1297                 enableHotkeys();
1298
1299                 if (Element.visible("infoBoxShadow")) {
1300                         Element.hide("dialog_overlay");
1301                         Element.hide("infoBoxShadow");
1302
1303                         if (cleanup) $("infoBoxShadow").innerHTML = "&nbsp;";
1304                 }
1305         } catch (e) {
1306                 exception_error("closeInfoBox", e);
1307         }
1308
1309         return false;
1310 }
1311
1312
1313 function displayDlg(id, param) {
1314
1315         notify_progress("Loading, please wait...", true);
1316
1317         disableHotkeys();
1318
1319         var query = "backend.php?op=dlg&id=" +
1320                 param_escape(id) + "&param=" + param_escape(param);
1321
1322         new Ajax.Request(query, {
1323                 onComplete: function (transport) {
1324                         infobox_callback2(transport);
1325                 } });
1326
1327         return false;
1328 }
1329
1330 function infobox_submit_callback2(transport) {
1331         closeInfoBox();
1332
1333         try {
1334                 // called from prefs, reload tab
1335                 if (typeof active_tab != 'undefined' && active_tab) {
1336                         selectTab(active_tab, false);
1337                 }
1338         } catch (e) { }
1339
1340         if (transport.responseText) {
1341                 notify_info(transport.responseText);
1342         }
1343 }
1344
1345 function infobox_callback2(transport) {
1346         try {
1347
1348                 debug("infobox_callback2");
1349
1350                 var box = $('infoBox');
1351
1352                 if (box) {
1353
1354                         if (!getInitParam("infobox_disable_overlay")) {
1355                                 Element.show("dialog_overlay");
1356                         }
1357
1358                         box.innerHTML=transport.responseText;
1359                         Element.show("infoBoxShadow");
1360                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1361
1362
1363                 }
1364
1365                 /* FIXME this needs to be moved out somewhere */
1366
1367                 if ($("tags_choices")) {
1368                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1369                                 "backend.php?op=rpc&subop=completeTags",
1370                                 { tokens: ',', paramName: "search" });
1371                 }
1372
1373                 disableHotkeys();
1374
1375                 notify("");
1376         } catch (e) {
1377                 exception_error("infobox_callback2", e);
1378         }
1379 }
1380
1381 function createFilter() {
1382
1383         try {
1384
1385                 var form = document.forms['filter_add_form'];
1386                 var reg_exp = form.reg_exp.value;
1387
1388                 if (reg_exp == "") {
1389                         alert(__("Can't add filter: nothing to match on."));
1390                         return false;
1391                 }
1392
1393                 var query = Form.serialize("filter_add_form");
1394
1395                 // we can be called from some other tab in Prefs
1396                 if (typeof active_tab != 'undefined' && active_tab) {
1397                         active_tab = "filterConfig";
1398                 }
1399
1400                 new Ajax.Request("backend.php?" + query, {
1401                         onComplete: function (transport) {
1402                                 infobox_submit_callback2(transport);
1403                         } });
1404
1405                 return true;
1406
1407         } catch (e) {
1408                 exception_error("createFilter", e);
1409         }
1410 }
1411
1412 function toggleSubmitNotEmpty(e, submit_id) {
1413         try {
1414                 $(submit_id).disabled = (e.value == "")
1415         } catch (e) {
1416                 exception_error("toggleSubmitNotEmpty", e);
1417         }
1418 }
1419
1420 function isValidURL(s) {
1421         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1422 }
1423
1424 function subscribeToFeed() {
1425
1426         var form = document.forms['feed_add_form'];
1427         var feed_url = form.feed_url.value;
1428
1429         if (feed_url == "") {
1430                 alert(__("Can't subscribe: no feed URL given."));
1431                 return false;
1432         }
1433
1434         notify_progress(__("Subscribing to feed..."), true);
1435
1436         closeInfoBox();
1437
1438         var feeds_doc = document;
1439
1440 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1441
1442         var query = Form.serialize("feed_add_form");
1443
1444         debug("subscribe q: " + query);
1445
1446         new Ajax.Request("backend.php", {
1447                 parameters: query,
1448                 onComplete: function(transport) {
1449                         dlg_frefresh_callback(transport);
1450                 } });
1451
1452         return false;
1453 }
1454
1455 function filterCR(e, f)
1456 {
1457      var key;
1458
1459      if(window.event)
1460           key = window.event.keyCode;     //IE
1461      else
1462           key = e.which;     //firefox
1463
1464         if (key == 13) {
1465                 if (typeof f != 'undefined') {
1466                         f();
1467                         return false;
1468                 } else {
1469                         return false;
1470                 }
1471         } else {
1472                 return true;
1473         }
1474 }
1475
1476 var debug_last_class = "even";
1477
1478 function debug(msg) {
1479
1480         if (debug_last_class == "even") {
1481                 debug_last_class = "odd";
1482         } else {
1483                 debug_last_class = "even";
1484         }
1485
1486         var c = $('debug_output');
1487         if (c && Element.visible(c)) {
1488                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1489                         c.removeChild(c.lastChild);
1490                 }
1491
1492                 var d = new Date();
1493                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1494                         ":" + leading_zero(d.getSeconds());
1495                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1496                         msg + "</li>" + c.innerHTML;
1497         }
1498 }
1499
1500 function getInitParam(key) {
1501         return init_params[key];
1502 }
1503
1504 function storeInitParam(key, value) {
1505         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1506         init_params[key] = value;
1507 }
1508
1509 function fatalError(code, msg, ext_info) {
1510         try {
1511
1512                 if (!ext_info) ext_info = "N/A";
1513
1514                 if (code == 6) {
1515                         window.location.href = "tt-rss.php";
1516                 } else if (code == 5) {
1517                         window.location.href = "update.php";
1518                 } else {
1519
1520                         if (msg == "") msg = "Unknown error";
1521
1522                         var ebc = $("xebContent");
1523
1524                         if (ebc) {
1525
1526                                 Element.show("dialog_overlay");
1527                                 Element.show("errorBoxShadow");
1528                                 Element.hide("xebBtn");
1529
1530                                 if (ext_info) {
1531                                         if (ext_info.responseText) {
1532                                                 ext_info = ext_info.responseText;
1533                                         }
1534                                 }
1535
1536                                 ebc.innerHTML =
1537                                         "<div><b>Error message:</b></div>" +
1538                                         "<pre>" + msg + "</pre>" +
1539                                         "<div><b>Additional information:</b></div>" +
1540                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1541                         }
1542                 }
1543
1544         } catch (e) {
1545                 exception_error("fatalError", e);
1546         }
1547 }
1548
1549 function getFeedName(id, is_cat) {
1550         var e;
1551
1552         if (is_cat) {
1553                 e = $("FCATN-" + id);
1554         } else {
1555                 e = $("FEEDN-" + id);
1556         }
1557         if (e) {
1558                 return e.innerHTML.stripTags();
1559         } else {
1560                 return null;
1561         }
1562 }
1563
1564 function filterDlgCheckType(sender) {
1565
1566         try {
1567
1568                 var ftype = sender[sender.selectedIndex].value;
1569
1570                 var form = document.forms["filter_add_form"];
1571
1572                 if (!form) {
1573                         form = document.forms["filter_edit_form"];
1574                 }
1575
1576                 if (!form) {
1577                         debug("filterDlgCheckType: can't find form!");
1578                         return;
1579                 }
1580
1581                 // if selected filter type is 5 (Date) enable the modifier dropbox
1582                 if (ftype == 5) {
1583                         Element.show("filter_dlg_date_mod_box");
1584                         Element.show("filter_dlg_date_chk_box");
1585                 } else {
1586                         Element.hide("filter_dlg_date_mod_box");
1587                         Element.hide("filter_dlg_date_chk_box");
1588
1589                 }
1590
1591         } catch (e) {
1592                 exception_error("filterDlgCheckType", e);
1593         }
1594
1595 }
1596
1597 function filterDlgCheckAction(sender) {
1598
1599         try {
1600
1601                 var action = sender[sender.selectedIndex].value;
1602
1603                 var form = document.forms["filter_add_form"];
1604
1605                 if (!form) {
1606                         form = document.forms["filter_edit_form"];
1607                 }
1608
1609                 if (!form) {
1610                         debug("filterDlgCheckAction: can't find form!");
1611                         return;
1612                 }
1613
1614                 var action_param = $("filter_dlg_param_box");
1615
1616                 if (!action_param) {
1617                         debug("filterDlgCheckAction: can't find action param box!");
1618                         return;
1619                 }
1620
1621                 // if selected action supports parameters, enable params field
1622                 if (action == 4 || action == 6 || action == 7) {
1623                         Element.show(action_param);
1624                         if (action != 7) {
1625                                 Element.show(form.action_param);
1626                                 Element.hide(form.action_param_label);
1627                         } else {
1628                                 Element.show(form.action_param_label);
1629                                 Element.hide(form.action_param);
1630                         }
1631                 } else {
1632                         Element.hide(action_param);
1633                 }
1634
1635         } catch (e) {
1636                 exception_error("filterDlgCheckAction", e);
1637         }
1638
1639 }
1640
1641 function filterDlgCheckDate() {
1642         try {
1643                 var form = document.forms["filter_add_form"];
1644
1645                 if (!form) {
1646                         form = document.forms["filter_edit_form"];
1647                 }
1648
1649                 if (!form) {
1650                         debug("filterDlgCheckAction: can't find form!");
1651                         return;
1652                 }
1653
1654                 var reg_exp = form.reg_exp.value;
1655
1656                 var query = "backend.php?op=rpc&subop=checkDate&date=" + reg_exp;
1657
1658                 new Ajax.Request(query, {
1659                         onComplete: function(transport) {
1660
1661                                 var form = document.forms["filter_add_form"];
1662
1663                                 if (!form) {
1664                                         form = document.forms["filter_edit_form"];
1665                                 }
1666
1667                                 if (transport.responseXML) {
1668                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1669
1670                                         if (result && result.firstChild) {
1671                                                 if (result.firstChild.nodeValue == "1") {
1672
1673                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1674
1675                                                         return;
1676                                                 }
1677                                         }
1678                                 }
1679
1680                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1681
1682                         } });
1683
1684
1685         } catch (e) {
1686                 exception_error("filterDlgCheckDate", e);
1687         }
1688 }
1689
1690 function explainError(code) {
1691         return displayDlg("explainError", code);
1692 }
1693
1694 // this only searches loaded headlines list, not in CDM
1695 function getRelativePostIds(id, limit) {
1696
1697         if (!limit) limit = 3;
1698
1699         debug("getRelativePostIds: " + id + " limit=" + limit);
1700
1701         var ids = new Array();
1702         var container = $("headlinesList");
1703
1704         if (container) {
1705                 var rows = container.rows;
1706
1707                 for (var i = 0; i < rows.length; i++) {
1708                         var r_id = rows[i].id.replace("RROW-", "");
1709
1710                         if (r_id == id) {
1711                                 for (var k = 1; k <= limit; k++) {
1712                                         var nid = false;
1713
1714                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1715                                         if (nid) ids.push(nid);
1716
1717                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1718                                         if (nid) ids.push(nid);
1719                                 }
1720
1721                                 return ids;
1722                         }
1723                 }
1724         }
1725
1726         return false;
1727 }
1728
1729 function openArticleInNewWindow(id) {
1730         try {
1731                 debug("openArticleInNewWindow: " + id);
1732
1733                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1734                 var wname = "ttrss_article_" + id;
1735
1736                 debug(query + " " + wname);
1737
1738                 var w = window.open("", wname);
1739
1740                 if (!w) notify_error("Failed to open window for the article");
1741
1742                 new Ajax.Request(query, {
1743                         onComplete: function(transport) {
1744                                 open_article_callback(transport);
1745                         } });
1746
1747
1748         } catch (e) {
1749                 exception_error("openArticleInNewWindow", e);
1750         }
1751 }
1752
1753 /* http://textsnippets.com/posts/show/835 */
1754
1755 Position.GetWindowSize = function(w) {
1756         w = w ? w : window;
1757         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1758         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1759         return [width, height]
1760 }
1761
1762 /* http://textsnippets.com/posts/show/836 */
1763
1764 Position.Center = function(element, parent) {
1765         var w, h, pw, ph;
1766         var d = Element.getDimensions(element);
1767         w = d.width;
1768         h = d.height;
1769         Position.prepare();
1770         if (!parent) {
1771                 var ws = Position.GetWindowSize();
1772                 pw = ws[0];
1773                 ph = ws[1];
1774         } else {
1775                 pw = parent.offsetWidth;
1776                 ph = parent.offsetHeight;
1777         }
1778         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1779         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1780 }
1781
1782
1783 function labeltest_callback(transport) {
1784         try {
1785                 var container = $('label_test_result');
1786
1787                 container.innerHTML = transport.responseText;
1788                 if (!Element.visible(container)) {
1789                         Effect.SlideDown(container, { duration : 0.5 });
1790                 }
1791
1792                 notify("");
1793         } catch (e) {
1794                 exception_error("labeltest_callback", e);
1795         }
1796 }
1797
1798 function labelTest() {
1799
1800         try {
1801                 var container = $('label_test_result');
1802
1803                 var form = document.forms['label_edit_form'];
1804
1805                 var sql_exp = form.sql_exp.value;
1806                 var description = form.description.value;
1807
1808                 notify_progress("Loading, please wait...");
1809
1810                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1811                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1812
1813                 new Ajax.Request(query, {
1814                         onComplete: function (transport) {
1815                                 labeltest_callback(transport);
1816                         } });
1817
1818                 return false;
1819
1820         } catch (e) {
1821                 exception_error("labelTest", e);
1822         }
1823 }
1824
1825 function isCdmMode() {
1826         return !$("headlinesList");
1827 }
1828
1829 function getSelectedArticleIds2() {
1830         var rows = new Array();
1831         var cdm_mode = isCdmMode();
1832
1833         if (cdm_mode) {
1834                 rows = cdmGetSelectedArticles();
1835         } else {
1836                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1837         }
1838
1839         var ids = new Array();
1840
1841         for (var i = 0; i < rows.length; i++) {
1842                 var chk = $("RCHK-" + rows[i]);
1843                 if (chk && chk.checked) {
1844                         ids.push(rows[i]);
1845                 }
1846         }
1847
1848         return ids;
1849 }
1850
1851 function displayHelpInfobox(topic_id) {
1852
1853         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1854
1855         var w = window.open(url, "ttrss_help",
1856                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1857
1858 }
1859
1860 function focus_element(id) {
1861         try {
1862                 var e = $(id);
1863                 if (e) e.focus();
1864         } catch (e) {
1865                 exception_error("focus_element", e);
1866         }
1867         return false;
1868 }
1869
1870 function loading_set_progress(p) {
1871         try {
1872                 if (p < last_progress_point || !Element.visible("overlay")) return;
1873
1874                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1875
1876                 var o = $("l_progress_i");
1877
1878 //              o.style.width = (p * 2) + "px";
1879
1880                 new Effect.Scale(o, p, {
1881                         scaleY : false,
1882                         scaleFrom : last_progress_point,
1883                         scaleMode: { originalWidth : 200 },
1884                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1885
1886                 last_progress_point = p;
1887
1888         } catch (e) {
1889                 exception_error("loading_set_progress", e);
1890         }
1891 }
1892
1893 function remove_splash() {
1894         if (Element.visible("overlay")) {
1895                 debug("about to remove splash, OMG!");
1896                 Element.hide("overlay");
1897                 debug("removed splash!");
1898         }
1899 }
1900
1901 function addLabelExample() {
1902         try {
1903                 var form = document.forms["label_edit_form"];
1904
1905                 var text = form.sql_exp;
1906                 var op = form.label_fields[form.label_fields.selectedIndex];
1907                 var p = form.label_fields_param;
1908
1909                 if (op) {
1910                         op = op.value;
1911
1912                         var tmp = "";
1913
1914                         if (text.value != "") {
1915                                 if (text.value.substring(text.value.length-3, 3).toUpperCase() != "AND") {
1916                                         tmp = " AND ";
1917                                 } else {
1918                                         tmp = " ";
1919                                 }
1920                         }
1921
1922                         if (op == "unread") {
1923                                 tmp = tmp + "unread = true";
1924                         }
1925
1926                         if (op == "updated") {
1927                                 tmp = tmp + "last_read is null and unread = false";
1928                         }
1929
1930                         if (op == "kw_title") {
1931                                 if (p.value == "") {
1932                                         alert("This action requires a parameter.");
1933                                         return false;
1934                                 }
1935                                 tmp = tmp + "ttrss_entries.title like '%"+p.value+"%'";
1936                         }
1937
1938                         if (op == "kw_content") {
1939                                 if (p.value == "") {
1940                                         alert("This action requires a parameter.");
1941                                         return false;
1942                                 }
1943
1944                                 tmp = tmp + "ttrss_entries.content like '%"+p.value+"%'";
1945                         }
1946
1947                         if (op == "scoreE") {
1948                                 if (isNaN(parseInt(p.value))) {
1949                                         alert("This action expects numeric parameter.");
1950                                         return false;
1951                                 }
1952                                 tmp = tmp + "score = " + p.value;
1953                         }
1954
1955                         if (op == "scoreG") {
1956                                 if (isNaN(parseInt(p.value))) {
1957                                         alert("This action expects numeric parameter.");
1958                                         return false;
1959                                 }
1960                                 tmp = tmp + "score > " + p.value;
1961                         }
1962
1963                         if (op == "scoreL") {
1964                                 if (isNaN(parseInt(p.value))) {
1965                                         alert("This action expects numeric parameter.");
1966                                         return false;
1967                                 }
1968                                 tmp = tmp + "score < " + p.value;
1969                         }
1970
1971                         if (op == "newerD") {
1972                                 if (isNaN(parseInt(p.value))) {
1973                                         alert("This action expects numeric parameter.");
1974                                         return false;
1975                                 }
1976                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" days'";
1977                         }
1978
1979                         if (op == "newerH") {
1980                                 if (isNaN(parseInt(p.value))) {
1981                                         alert("This action expects numeric parameter.");
1982                                         return false;
1983                                 }
1984
1985                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" hours'";
1986                         }
1987
1988                         text.value = text.value + tmp;
1989
1990                         p.value = "";
1991
1992                 }
1993
1994         } catch (e) {
1995                 exception_error("addLabelExample", e);
1996         }
1997
1998         return false;
1999 }
2000
2001 function labelFieldsCheck(elem) {
2002         try {
2003                 var op = elem[elem.selectedIndex].value;
2004
2005                 var p = document.forms["label_edit_form"].label_fields_param;
2006
2007                 if (op == "kw_title" || op == "kw_content" || op == "scoreL" ||
2008                                 op == "scoreG" ||       op == "scoreE" || op == "newerD" ||
2009                                 op == "newerH" ) {
2010                         Element.show(p);
2011                 } else {
2012                         Element.hide(p);
2013                 }
2014
2015         } catch (e) {
2016                 exception_error("labelFieldsCheck", e);
2017
2018         }
2019 }
2020
2021 function getSelectedFeedsFromBrowser() {
2022
2023         var list = $("browseFeedList");
2024         if (!list) list = $("browseBigFeedList");
2025
2026         var selected = new Array();
2027
2028         for (i = 0; i < list.childNodes.length; i++) {
2029                 var child = list.childNodes[i];
2030                 if (child.id && child.id.match("FBROW-")) {
2031                         var id = child.id.replace("FBROW-", "");
2032
2033                         var cb = $("FBCHK-" + id);
2034
2035                         if (cb.checked) {
2036                                 selected.push(id);
2037                         }
2038                 }
2039         }
2040
2041         return selected;
2042 }
2043
2044 function updateFeedBrowser() {
2045         try {
2046
2047                 var query = "backend.php?op=rpc&subop=feedBrowser";
2048
2049                 var search = $("feed_browser_search");
2050                 var limit = $("feed_browser_limit");
2051
2052                 if (limit) {
2053                         query = query + "&limit=" + limit[limit.selectedIndex].value;
2054                 }
2055
2056                 if (search) {
2057                         query = query + "&search=" + param_escape(search.value);
2058                 }
2059
2060                 //notify_progress("Loading, please wait...", true);
2061
2062                 Element.show('feed_browser_spinner');
2063
2064                 new Ajax.Request(query, {
2065                         onComplete: function(transport) {
2066                                 notify('');
2067
2068                                 Element.hide('feed_browser_spinner');
2069
2070                                 var c = $("browseFeedList");
2071                                 var r = transport.responseXML.getElementsByTagName("content")[0];
2072                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
2073                                 var sb = $("feed_browser_subscribe");
2074
2075                                 if (c && r) {
2076                                         c.innerHTML = r.firstChild.nodeValue;
2077                                 }
2078
2079                                 if (nr && sb) {
2080                                         if (nr.getAttribute("value") > 0) {
2081                                                 sb.disabled = false;
2082                                         } else {
2083                                                 sb.disabled = true;
2084                                         }
2085                                 }
2086
2087                         } });
2088
2089
2090         } catch (e) {
2091                 exception_error("updateFeedBrowser", e);
2092         }
2093 }
2094
2095 function browseFeeds(limit) {
2096
2097         try {
2098
2099                 var query = "backend.php?op=pref-feeds&subop=browse";
2100
2101                 notify_progress("Loading, please wait...", true);
2102
2103                 new Ajax.Request(query, {
2104                         onComplete: function(transport) {
2105                                 infobox_callback2(transport);
2106                         } });
2107
2108                 return false;
2109         } catch (e) {
2110                 exception_error("browseFeeds", e);
2111         }
2112 }
2113
2114 function transport_error_check(transport) {
2115         try {
2116                 if (transport.responseXML) {
2117                         var error = transport.responseXML.getElementsByTagName("error")[0];
2118
2119                         if (error) {
2120                                 var code = error.getAttribute("error-code");
2121                                 var msg = error.getAttribute("error-msg");
2122                                 if (code != 0) {
2123                                         fatalError(code, msg);
2124                                         return false;
2125                                 }
2126                         }
2127                 }
2128         } catch (e) {
2129                 exception_error("check_for_error_xml", e);
2130         }
2131         return true;
2132 }
2133
2134 function strip_tags(s) {
2135         return s.replace(/<\/?[^>]+(>|$)/g, "");
2136 }
2137
2138 function truncate_string(s, length) {
2139         if (!length) length = 30;
2140         var tmp = s.substring(0, length);
2141         if (s.length > length) tmp += "&hellip;";
2142         return tmp;
2143 }
2144
2145 /*
2146 function switchToFlash(e) {
2147         try {
2148                 var targ = e;
2149                 if (!e) var e = window.event;
2150                 if (e.target) targ = e.target;
2151                 else if (e.srcElement) targ = e.srcElement;
2152                 if (targ.nodeType == 3) // defeat Safari bug
2153                         targ = targ.parentNode;
2154
2155                 //targ is the link that was clicked
2156                 var audioTag=targ;
2157                 do {
2158                         audioTag=audioTag.previousSibling;
2159                 } while(audioTag && audioTag.nodeType != 1)
2160
2161                 var flashPlayer = audioTag.getElementsByTagName('span')[0];
2162                 targ.parentNode.insertBefore(flashPlayer,targ);
2163                 targ.parentNode.removeChild(targ);
2164                 audioTag.parentNode.removeChild(audioTag);
2165
2166                 return false;
2167         } catch (e) {
2168                 exception_error("switchToFlash", e);
2169         }
2170 }
2171
2172 function html5AudioOrFlash(type) {
2173         var audioTag = document.createElement('audio');
2174         if(! audioTag.canPlayType || audioTag.canPlayType(type) == "no" ||
2175                         audioTag.canPlayType(type) == ""){
2176                 if($('switchToFlashLink')){
2177                         switchToFlash($('switchToFlashLink'));
2178                 }
2179         }
2180 } */
2181
2182 function hotkey_prefix_timeout() {
2183         try {
2184
2185                 var date = new Date();
2186                 var ts = Math.round(date.getTime() / 1000);
2187
2188                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
2189                         debug("hotkey_prefix seems to be stuck, aborting");
2190                         hotkey_prefix_pressed = false;
2191                         hotkey_prefix = false;
2192                         Element.hide('cmdline');
2193                 }
2194
2195                 setTimeout("hotkey_prefix_timeout()", 1000);
2196
2197         } catch  (e) {
2198                 exception_error("hotkey_prefix_timeout", e);
2199         }
2200 }
2201
2202 function hideAuxDlg() {
2203         try {
2204                 Element.hide('auxDlg');
2205         } catch (e) {
2206                 exception_error("hideAuxDlg", e);
2207         }
2208 }
2209
2210 function displayNewContentPrompt(id) {
2211         try {
2212                 var msg = __("New articles in &laquo;%s&raquo;.") +
2213                         " <a href='#' onclick='viewfeed("+id+")'>" + __('Click to view') + "</a>.";
2214
2215                 msg = msg.replace("%s", getFeedName(id));
2216
2217                 $('auxDlg').innerHTML = msg;
2218
2219                 Element.show('auxDlg');
2220
2221         } catch (e) {
2222                 exception_error("displayNewContentPrompt", e);
2223         }
2224 }