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                         cache_invalidate("FEEDLIST");
 583                         cache_inject("FEEDLIST",
 584                                 document.getElementById("feedList").innerHTML,
 585                                 getInitParam("num_feeds"));
 586                 }
 587
 588         } catch (e) {
 589                 exception_error("parse_counters", e);
 590         }
 591 }
 592
 593 function parse_counters_reply(transport, scheduled_call) {
 594
 595         if (!transport.responseXML) {
 596                 notify_error("Backend did not return valid XML", true);
 597                 return;
 598         }
 599
 600         var reply = transport.responseXML.firstChild;
 601
 602         if (!reply) {
 603                 notify_error("Backend did not return expected XML object", true);
 604                 updateTitle("");
 605                 return;
 606         }
 607
 608         if (!transport_error_check(transport)) return;
 609
 610         var counters = reply.getElementsByTagName("counters")[0];
 611
 612         parse_counters(counters, scheduled_call);
 613
 614         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 615
 616         parse_runtime_info(runtime_info);
 617
 618         if (feedsSortByUnread()) {
 619                 resort_feedlist();
 620         }
 621
 622         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 623
 624 }
 625
 626 function all_counters_callback2(transport, async_call) {
 627         try {
 628                 if (async_call) async_counters_work = true;
 629
 630                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 631                 parse_counters_reply(transport);
 632                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 633
 634         } catch (e) {
 635                 exception_error("all_counters_callback2", e, transport);
 636         }
 637 }
 638
 639 function get_feed_unread(id) {
 640         try {
 641                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 642         } catch (e) {
 643                 return -1;
 644         }
 645 }
 646
 647 function get_cat_unread(id) {
 648         try {
 649                 var ctr = document.getElementById("FCATCTR-" + id).innerHTML;
 650                 ctr = ctr.replace("(", "");
 651                 ctr = ctr.replace(")", "");
 652                 return parseInt(ctr);
 653         } catch (e) {
 654                 return -1;
 655         }
 656 }
 657
 658 function get_feed_entry_unread(elem) {
 659
 660         var id = elem.id.replace("FEEDR-", "");
 661
 662         if (id <= 0) {
 663                 return -1;
 664         }
 665
 666         try {
 667                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 668         } catch (e) {
 669                 return -1;
 670         }
 671 }
 672
 673 function get_feed_entry_name(elem) {
 674         var id = elem.id.replace("FEEDR-", "");
 675         return getFeedName(id);
 676 }
 677
 678
 679 function resort_category(node) {
 680
 681         try {
 682
 683                 debug("resort_category: " + node);
 684
 685                 var by_unread = feedsSortByUnread();
 686
 687                 var list = node.getElementsByTagName("LI");
 688
 689                 for (i = 0; i < list.length; i++) {
 690
 691                         for (j = i+1; j < list.length; j++) {
 692
 693                                 var tmp_val = get_feed_entry_unread(list[i]);
 694                                 var cur_val = get_feed_entry_unread(list[j]);
 695
 696                                 var tmp_name = get_feed_entry_name(list[i]);
 697                                 var cur_name = get_feed_entry_name(list[j]);
 698
 699                                 if ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name))) {
 700                                         tempnode_i = list[i].cloneNode(true);
 701                                         tempnode_j = list[j].cloneNode(true);
 702                                         node.replaceChild(tempnode_i, list[j]);
 703                                         node.replaceChild(tempnode_j, list[i]);
 704                                 }
 705                         }
 706                 }
 707
 708         } catch (e) {
 709                 exception_error("resort_category", e);
 710         }
 711
 712 }
 713
 714 function resort_feedlist() {
 715         debug("resort_feedlist");
 716
 717         if (document.getElementById("FCATLIST--1")) {
 718
 719                 var lists = document.getElementsByTagName("UL");
 720
 721                 for (var i = 0; i < lists.length; i++) {
 722                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 723                                 resort_category(lists[i]);
 724                         }
 725                 }
 726
 727         } else {
 728                 resort_category(document.getElementById("feedList"));
 729         }
 730 }
 731
 732 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 733   * * @author Sundar Dorai-Raj
 734   * * Email: sdoraira@vt.edu
 735   * * This program is free software; you can redistribute it and/or
 736   * * modify it under the terms of the GNU General Public License
 737   * * as published by the Free Software Foundation; either version 2
 738   * * of the License, or (at your option) any later version,
 739   * * provided that any use properly credits the author.
 740   * * This program is distributed in the hope that it will be useful,
 741   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 742   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 743   * * GNU General Public License for more details at http://www.gnu.org * * */
 744
 745   var numbers=".0123456789";
 746   function isNumeric(x) {
 747     // is x a String or a character?
 748     if(x.length>1) {
 749       // remove negative sign
 750       x=Math.abs(x)+"";
 751       for(j=0;j<x.length;j++) {
 752         // call isNumeric recursively for each character
 753         number=isNumeric(x.substring(j,j+1));
 754         if(!number) return number;
 755       }
 756       return number;
 757     }
 758     else {
 759       // if x is number return true
 760       if(numbers.indexOf(x)>=0) return true;
 761       return false;
 762     }
 763   }
 764
 765
 766 function hideOrShowFeeds(hide) {
 767
 768         try {
 769
 770         debug("hideOrShowFeeds: " + hide);
 771
 772         if (document.getElementById("FCATLIST--1")) {
 773
 774                 var lists = document.getElementsByTagName("UL");
 775
 776                 for (var i = 0; i < lists.length; i++) {
 777                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 778
 779                                 var id = lists[i].id.replace("FCATLIST-", "");
 780                                 hideOrShowFeedsCategory(id, hide);
 781                         }
 782                 }
 783
 784         } else {
 785                 hideOrShowFeedsCategory(null, hide);
 786         }
 787
 788         } catch (e) {
 789                 exception_error("hideOrShowFeeds", e);
 790         }
 791 }
 792
 793 function hideOrShowFeedsCategory(id, hide) {
 794
 795         try {
 796
 797                 var node = null;
 798                 var cat_node = null;
 799
 800                 if (id) {
 801                         node = document.getElementById("FCATLIST-" + id);
 802                         cat_node = document.getElementById("FCAT-" + id);
 803                 } else {
 804                         node = document.getElementById("feedList"); // no categories
 805                 }
 806
 807         //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 808
 809                 var cat_unread = 0;
 810
 811                 if (!node) {
 812                         debug("hideOrShowFeeds: passed node is null, aborting");
 813                         return;
 814                 }
 815
 816         //      debug("cat: " + node.id);
 817
 818                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 819                         for (i = 0; i < node.childNodes.length; i++) {
 820                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 821
 822                                 if (node.childNodes[i].style != undefined) {
 823
 824                                         var has_unread = (node.childNodes[i].className != "feed" &&
 825                                                 node.childNodes[i].className != "label" &&
 826                                                 !(!getInitParam("hide_read_shows_special") &&
 827                                                         node.childNodes[i].className == "virt") &&
 828                                                 node.childNodes[i].className != "error" &&
 829                                                 node.childNodes[i].className != "tag");
 830
 831         //                              debug(node.childNodes[i].id + " --> " + has_unread);
 832
 833                                         if (hide && !has_unread) {
 834                                                 //node.childNodes[i].style.display = "none";
 835                                                 var id = node.childNodes[i].id;
 836                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 837                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 838                                         }
 839
 840                                         if (!hide) {
 841                                                 node.childNodes[i].style.display = "list-item";
 842                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 843                                         }
 844
 845                                         if (has_unread) {
 846                                                 node.childNodes[i].style.display = "list-item";
 847                                                 cat_unread++;
 848                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 849                                                 //Effect.Highlight(node.childNodes[i]);
 850                                         }
 851                                 }
 852                         }
 853                 }
 854
 855         //      debug("end cat: " + node.id + " unread " + cat_unread);
 856
 857                 if (cat_unread == 0) {
 858                         if (cat_node.style == undefined) {
 859                                 debug("ERROR: supplied cat_node " + cat_node +
 860                                         " has no styles. WTF?");
 861                                 return;
 862                         }
 863                         if (hide) {
 864                                 //cat_node.style.display = "none";
 865                                 Effect.Fade(cat_node, {duration : 0.3,
 866                                         queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 867                         } else {
 868                                 cat_node.style.display = "list-item";
 869                         }
 870                 } else {
 871                         try {
 872                                 cat_node.style.display = "list-item";
 873                         } catch (e) {
 874                                 debug(e);
 875                         }
 876                 }
 877
 878 //      debug("unread for category: " + cat_unread);
 879
 880         } catch (e) {
 881                 exception_error("hideOrShowFeedsCategory", e);
 882         }
 883 }
 884
 885 function selectTableRow(r, do_select) {
 886         r.className = r.className.replace("Selected", "");
 887
 888         if (do_select) {
 889                 r.className = r.className + "Selected";
 890         }
 891 }
 892
 893 function selectTableRowById(elem_id, check_id, do_select) {
 894
 895         try {
 896
 897                 var row = document.getElementById(elem_id);
 898
 899                 if (row) {
 900                         selectTableRow(row, do_select);
 901                 }
 902
 903                 var check = document.getElementById(check_id);
 904
 905                 if (check) {
 906                         check.checked = do_select;
 907                 }
 908         } catch (e) {
 909                 exception_error("selectTableRowById", e);
 910         }
 911 }
 912
 913 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 914         classcheck, reset_others) {
 915
 916         var content = document.getElementById(content_id);
 917
 918         if (!content) {
 919                 alert("[selectTableRows] Element " + content_id + " not found.");
 920                 return;
 921         }
 922
 923         for (i = 0; i < content.rows.length; i++) {
 924                 if (Element.visible(content.rows[i])) {
 925                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 926
 927                                 if (content.rows[i].id.match(prefix)) {
 928                                         selectTableRow(content.rows[i], do_select);
 929
 930                                         var row_id = content.rows[i].id.replace(prefix, "");
 931                                         var check = document.getElementById(check_prefix + row_id);
 932
 933                                         if (check) {
 934                                                 check.checked = do_select;
 935                                         }
 936                                 } else if (reset_others) {
 937                                         selectTableRow(content.rows[i], false);
 938
 939                                         var row_id = content.rows[i].id.replace(prefix, "");
 940                                         var check = document.getElementById(check_prefix + row_id);
 941
 942                                         if (check) {
 943                                                 check.checked = false;
 944                                         }
 945
 946                                 }
 947                         } else if (reset_others) {
 948                                 selectTableRow(content.rows[i], false);
 949
 950                                 var row_id = content.rows[i].id.replace(prefix, "");
 951                                 var check = document.getElementById(check_prefix + row_id);
 952
 953                                 if (check) {
 954                                         check.checked = false;
 955                                 }
 956
 957                         }
 958                 }
 959         }
 960 }
 961
 962 function getSelectedTableRowIds(content_id, prefix) {
 963
 964         var content = document.getElementById(content_id);
 965
 966         if (!content) {
 967                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 968                 return;
 969         }
 970
 971         var sel_rows = new Array();
 972
 973         for (i = 0; i < content.rows.length; i++) {
 974                 if (content.rows[i].id.match(prefix) &&
 975                                 content.rows[i].className.match("Selected")) {
 976
 977                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 978                         sel_rows.push(row_id);
 979                 }
 980         }
 981
 982         return sel_rows;
 983
 984 }
 985
 986 function toggleSelectRowById(sender, id) {
 987         var row = document.getElementById(id);
 988
 989         if (sender.checked) {
 990                 if (!row.className.match("Selected")) {
 991                         row.className = row.className + "Selected";
 992                 }
 993         } else {
 994                 if (row.className.match("Selected")) {
 995                         row.className = row.className.replace("Selected", "");
 996                 }
 997         }
 998 }
 999
1000 function toggleSelectListRow(sender) {
1001         var parent_row = sender.parentNode;
1002
1003         if (sender.checked) {
1004                 if (!parent_row.className.match("Selected")) {
1005                         parent_row.className = parent_row.className + "Selected";
1006                 }
1007         } else {
1008                 if (parent_row.className.match("Selected")) {
1009                         parent_row.className = parent_row.className.replace("Selected", "");
1010                 }
1011         }
1012 }
1013
1014 function tSR(sender) {
1015         return toggleSelectRow(sender);
1016 }
1017
1018 function toggleSelectRow(sender) {
1019         var parent_row = sender.parentNode.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 getNextUnreadCat(id) {
1033         try {
1034                 var rows = document.getElementById("feedList").getElementsByTagName("LI");
1035                 var feeds = new Array();
1036
1037                 var unread_only = true;
1038                 var is_cat = true;
1039
1040                 for (var i = 0; i < rows.length; i++) {
1041                         if (rows[i].id.match("FCAT-")) {
1042                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1043
1044                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1045
1046                                         if (cat_id >= 0) {
1047                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1048                                                         feeds.push(cat_id);
1049                                                 }
1050                                         }
1051                                 }
1052                         }
1053                 }
1054
1055                 var idx = feeds.indexOf(id);
1056                 if (idx != -1 && idx < feeds.length) {
1057                         return feeds[idx+1];
1058                 } else {
1059                         return feeds.shift();
1060                 }
1061
1062         } catch (e) {
1063                 exception_error("getNextUnreadCat", e);
1064         }
1065 }
1066
1067 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1068         try {
1069
1070 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1071
1072                 var rows = document.getElementById("feedList").getElementsByTagName("LI");
1073                 var feeds = new Array();
1074
1075                 for (var i = 0; i < rows.length; i++) {
1076                         if (rows[i].id.match("FEEDR-")) {
1077
1078                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1079
1080                                         if (!unread_only ||
1081                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1082                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1083                                         }
1084                                 }
1085                         }
1086
1087                         if (rows[i].id.match("FCAT-")) {
1088                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1089
1090                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1091
1092                                         if (cat_id >= 0) {
1093                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1094                                                         feeds.push("CAT:"+cat_id);
1095                                                 }
1096                                         }
1097                                 }
1098                         }
1099                 }
1100
1101 //              alert(feeds.toString());
1102
1103                 if (!id) {
1104                         if (direction == "next") {
1105                                 return feeds.shift();
1106                         } else {
1107                                 return feeds.pop();
1108                         }
1109                 } else {
1110                         if (direction == "next") {
1111                                 if (is_cat) id = "CAT:" + id;
1112                                 var idx = feeds.indexOf(id);
1113                                 if (idx != -1 && idx < feeds.length) {
1114                                         return feeds[idx+1];
1115                                 } else {
1116                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1117                                 }
1118                         } else {
1119                                 if (is_cat) id = "CAT:" + id;
1120                                 var idx = feeds.indexOf(id);
1121                                 if (idx > 0) {
1122                                         return feeds[idx-1];
1123                                 } else {
1124                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1125                                 }
1126                         }
1127
1128                 }
1129
1130         } catch (e) {
1131                 exception_error("getRelativeFeedId2", e);
1132         }
1133 }
1134
1135
1136 function getRelativeFeedId(list, id, direction, unread_only) {
1137         var rows = list.getElementsByTagName("LI");
1138         var feeds = new Array();
1139
1140         for (var i = 0; i < rows.length; i++) {
1141                 if (rows[i].id.match("FEEDR-")) {
1142
1143                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1144
1145                                 if (!unread_only ||
1146                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1147                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1148                                 }
1149                         }
1150                 }
1151         }
1152
1153         if (!id) {
1154                 if (direction == "next") {
1155                         return feeds.shift();
1156                 } else {
1157                         return feeds.pop();
1158                 }
1159         } else {
1160                 if (direction == "next") {
1161                         var idx = feeds.indexOf(id);
1162                         if (idx != -1 && idx < feeds.length) {
1163                                 return feeds[idx+1];
1164                         } else {
1165                                 return getRelativeFeedId(list, false, direction, unread_only);
1166                         }
1167                 } else {
1168                         var idx = feeds.indexOf(id);
1169                         if (idx > 0) {
1170                                 return feeds[idx-1];
1171                         } else {
1172                                 return getRelativeFeedId(list, false, direction, unread_only);
1173                         }
1174                 }
1175
1176         }
1177 }
1178
1179 function showBlockElement(id, h_id) {
1180         var elem = document.getElementById(id);
1181
1182         if (elem) {
1183                 elem.style.display = "block";
1184
1185                 if (h_id) {
1186                         elem = document.getElementById(h_id);
1187                         if (elem) {
1188                                 elem.style.display = "none";
1189                         }
1190                 }
1191         } else {
1192                 alert("[showBlockElement] can't find element with id " + id);
1193         }
1194 }
1195
1196 function appearBlockElement_afh(effect) {
1197
1198 }
1199
1200 function checkboxToggleElement(elem, id) {
1201         if (elem.checked) {
1202                 Effect.Appear(id, {duration : 0.5});
1203         } else {
1204                 Effect.Fade(id, {duration : 0.5});
1205         }
1206 }
1207
1208 function appearBlockElement(id, h_id) {
1209
1210         try {
1211                 if (h_id) {
1212                         Effect.Fade(h_id);
1213                 }
1214                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1215         } catch (e) {
1216                 exception_error("appearBlockElement", e);
1217         }
1218
1219 }
1220
1221 function hideParentElement(e) {
1222         e.parentNode.style.display = "none";
1223 }
1224
1225 function dropboxSelect(e, v) {
1226         for (i = 0; i < e.length; i++) {
1227                 if (e[i].value == v) {
1228                         e.selectedIndex = i;
1229                         break;
1230                 }
1231         }
1232 }
1233
1234 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1235 // bugfixed just a little bit :-)
1236 function getURLParam(strParamName){
1237   var strReturn = "";
1238   var strHref = window.location.href;
1239
1240   if (strHref.indexOf("#") == strHref.length-1) {
1241                 strHref = strHref.substring(0, strHref.length-1);
1242   }
1243
1244   if ( strHref.indexOf("?") > -1 ){
1245     var strQueryString = strHref.substr(strHref.indexOf("?"));
1246     var aQueryString = strQueryString.split("&");
1247     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1248       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1249         var aParam = aQueryString[iParam].split("=");
1250         strReturn = aParam[1];
1251         break;
1252       }
1253     }
1254   }
1255   return strReturn;
1256 }
1257
1258 function leading_zero(p) {
1259         var s = String(p);
1260         if (s.length == 1) s = "0" + s;
1261         return s;
1262 }
1263
1264 function closeErrorBox() {
1265
1266         if (Element.visible("errorBoxShadow")) {
1267                 Element.hide("dialog_overlay");
1268                 Element.hide("errorBoxShadow");
1269
1270                 enableHotkeys();
1271         }
1272
1273         return false;
1274 }
1275
1276 function closeInfoBox(cleanup) {
1277
1278         if (Element.visible("infoBoxShadow")) {
1279                 Element.hide("dialog_overlay");
1280
1281                 var shadow = document.getElementById('infoBoxShadow');
1282                 var box = document.getElementById('infoBoxShadow');
1283
1284                 Element.hide(shadow);
1285
1286                 if (cleanup) box.innerHTML = "&nbsp;";
1287
1288                 enableHotkeys();
1289         }
1290
1291         return false;
1292 }
1293
1294
1295 function displayDlg(id, param) {
1296
1297         notify_progress("Loading, please wait...", true);
1298
1299         disableHotkeys();
1300
1301         var query = "backend.php?op=dlg&id=" +
1302                 param_escape(id) + "&param=" + param_escape(param);
1303
1304         new Ajax.Request(query, {
1305                 onComplete: function (transport) {
1306                         infobox_callback2(transport);
1307                 } });
1308
1309         return false;
1310 }
1311
1312 function infobox_submit_callback2(transport) {
1313         closeInfoBox();
1314
1315         try {
1316                 // called from prefs, reload tab
1317                 if (typeof active_tab != 'undefined' && active_tab) {
1318                         selectTab(active_tab, false);
1319                 }
1320         } catch (e) { }
1321
1322         if (transport.responseText) {
1323                 notify_info(transport.responseText);
1324         }
1325 }
1326
1327 function infobox_callback2(transport) {
1328         try {
1329
1330                 debug("infobox_callback2");
1331
1332                 if (!getInitParam("infobox_disable_overlay")) {
1333                         Element.show("dialog_overlay");
1334                 }
1335
1336                 var box = document.getElementById('infoBox');
1337                 var shadow = document.getElementById('infoBoxShadow');
1338                 if (box) {
1339
1340                         box.innerHTML=transport.responseText;
1341                         if (shadow) {
1342                                 shadow.style.display = "block";
1343                         } else {
1344                                 box.style.display = "block";
1345                         }
1346                 }
1347
1348                 /* FIXME this needs to be moved out somewhere */
1349
1350                 if (document.getElementById("tags_choices")) {
1351                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1352                                 "backend.php?op=rpc&subop=completeTags",
1353                                 { tokens: ',', paramName: "search" });
1354                 }
1355
1356                 disableHotkeys();
1357
1358                 notify("");
1359         } catch (e) {
1360                 exception_error("infobox_callback2", e);
1361         }
1362 }
1363
1364 function createFilter() {
1365
1366         try {
1367
1368                 var form = document.forms['filter_add_form'];
1369                 var reg_exp = form.reg_exp.value;
1370
1371                 if (reg_exp == "") {
1372                         alert(__("Can't add filter: nothing to match on."));
1373                         return false;
1374                 }
1375
1376                 var query = Form.serialize("filter_add_form");
1377
1378                 // we can be called from some other tab in Prefs
1379                 if (typeof active_tab != 'undefined' && active_tab) {
1380                         active_tab = "filterConfig";
1381                 }
1382
1383                 new Ajax.Request("backend.php?" + query, {
1384                         onComplete: function (transport) {
1385                                 infobox_submit_callback2(transport);
1386                         } });
1387
1388                 return true;
1389
1390         } catch (e) {
1391                 exception_error("createFilter", e);
1392         }
1393 }
1394
1395 function toggleSubmitNotEmpty(e, submit_id) {
1396         try {
1397                 document.getElementById(submit_id).disabled = (e.value == "")
1398         } catch (e) {
1399                 exception_error("toggleSubmitNotEmpty", e);
1400         }
1401 }
1402
1403 function isValidURL(s) {
1404         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1405 }
1406
1407 function subscribeToFeed() {
1408
1409         var form = document.forms['feed_add_form'];
1410         var feed_url = form.feed_url.value;
1411
1412         if (feed_url == "") {
1413                 alert(__("Can't subscribe: no feed URL given."));
1414                 return false;
1415         }
1416
1417         notify_progress(__("Subscribing to feed..."), true);
1418
1419         closeInfoBox();
1420
1421         var feeds_doc = document;
1422
1423 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1424
1425         var query = Form.serialize("feed_add_form");
1426
1427         debug("subscribe q: " + query);
1428
1429         new Ajax.Request("backend.php", {
1430                 parameters: query,
1431                 onComplete: function(transport) {
1432                         dlg_frefresh_callback(transport);
1433                 } });
1434
1435         return false;
1436 }
1437
1438 function filterCR(e, f)
1439 {
1440      var key;
1441
1442      if(window.event)
1443           key = window.event.keyCode;     //IE
1444      else
1445           key = e.which;     //firefox
1446
1447         if (key == 13) {
1448                 if (typeof f != 'undefined') {
1449                         f();
1450                         return false;
1451                 } else {
1452                         return false;
1453                 }
1454         } else {
1455                 return true;
1456         }
1457 }
1458
1459 var debug_last_class = "even";
1460
1461 function debug(msg) {
1462
1463         if (debug_last_class == "even") {
1464                 debug_last_class = "odd";
1465         } else {
1466                 debug_last_class = "even";
1467         }
1468
1469         var c = document.getElementById('debug_output');
1470         if (c && Element.visible(c)) {
1471                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1472                         c.removeChild(c.lastChild);
1473                 }
1474
1475                 var d = new Date();
1476                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1477                         ":" + leading_zero(d.getSeconds());
1478                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1479                         msg + "</li>" + c.innerHTML;
1480         }
1481 }
1482
1483 function getInitParam(key) {
1484         return init_params[key];
1485 }
1486
1487 function storeInitParam(key, value) {
1488         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1489         init_params[key] = value;
1490 }
1491
1492 function fatalError(code, msg, ext_info) {
1493         try {
1494
1495                 if (code == 6) {
1496                         window.location.href = "tt-rss.php";
1497                 } else if (code == 5) {
1498                         window.location.href = "update.php";
1499                 } else {
1500
1501                         if (msg == "") msg = "Unknown error";
1502
1503                         var ebc = document.getElementById("xebContent");
1504
1505                         if (ebc) {
1506
1507                                 Element.show("dialog_overlay");
1508                                 Element.show("errorBoxShadow");
1509                                 Element.hide("xebBtn");
1510
1511                                 if (ext_info) {
1512                                         if (ext_info.responseText) {
1513                                                 ext_info = ext_info.responseText;
1514                                         }
1515                                 }
1516
1517                                 ebc.innerHTML =
1518                                         "<div><b>Error message:</b></div>" +
1519                                         "<pre>" + msg + "</pre>" +
1520                                         "<div><b>Additional information:</b></div>" +
1521                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1522                         }
1523                 }
1524
1525         } catch (e) {
1526                 exception_error("fatalError", e);
1527         }
1528 }
1529
1530 function getFeedName(id, is_cat) {
1531         var e;
1532
1533         if (is_cat) {
1534                 e = document.getElementById("FCATN-" + id);
1535         } else {
1536                 e = document.getElementById("FEEDN-" + id);
1537         }
1538         if (e) {
1539                 return e.innerHTML.stripTags();
1540         } else {
1541                 return null;
1542         }
1543 }
1544
1545 function filterDlgCheckType(sender) {
1546
1547         try {
1548
1549                 var ftype = sender[sender.selectedIndex].value;
1550
1551                 var form = document.forms["filter_add_form"];
1552
1553                 if (!form) {
1554                         form = document.forms["filter_edit_form"];
1555                 }
1556
1557                 if (!form) {
1558                         debug("filterDlgCheckType: can't find form!");
1559                         return;
1560                 }
1561
1562                 // if selected filter type is 5 (Date) enable the modifier dropbox
1563                 if (ftype == 5) {
1564                         Element.show("filter_dlg_date_mod_box");
1565                         Element.show("filter_dlg_date_chk_box");
1566                 } else {
1567                         Element.hide("filter_dlg_date_mod_box");
1568                         Element.hide("filter_dlg_date_chk_box");
1569
1570                 }
1571
1572         } catch (e) {
1573                 exception_error("filterDlgCheckType", e);
1574         }
1575
1576 }
1577
1578 function filterDlgCheckAction(sender) {
1579
1580         try {
1581
1582                 var action = sender[sender.selectedIndex].value;
1583
1584                 var form = document.forms["filter_add_form"];
1585
1586                 if (!form) {
1587                         form = document.forms["filter_edit_form"];
1588                 }
1589
1590                 if (!form) {
1591                         debug("filterDlgCheckAction: can't find form!");
1592                         return;
1593                 }
1594
1595                 var action_param = document.getElementById("filter_dlg_param_box");
1596
1597                 if (!action_param) {
1598                         debug("filterDlgCheckAction: can't find action param box!");
1599                         return;
1600                 }
1601
1602                 // if selected action supports parameters, enable params field
1603                 if (action == 4 || action == 6 || action == 7) {
1604                         Element.show(action_param);
1605                         if (action != 7) {
1606                                 Element.show(form.action_param);
1607                                 Element.hide(form.action_param_label);
1608                         } else {
1609                                 Element.show(form.action_param_label);
1610                                 Element.hide(form.action_param);
1611                         }
1612                 } else {
1613                         Element.hide(action_param);
1614                 }
1615
1616         } catch (e) {
1617                 exception_error("filterDlgCheckAction", e);
1618         }
1619
1620 }
1621
1622 function filterDlgCheckDate() {
1623         try {
1624                 var form = document.forms["filter_add_form"];
1625
1626                 if (!form) {
1627                         form = document.forms["filter_edit_form"];
1628                 }
1629
1630                 if (!form) {
1631                         debug("filterDlgCheckAction: can't find form!");
1632                         return;
1633                 }
1634
1635                 var reg_exp = form.reg_exp.value;
1636
1637                 var query = "backend.php?op=rpc&subop=checkDate&date=" + reg_exp;
1638
1639                 new Ajax.Request(query, {
1640                         onComplete: function(transport) {
1641
1642                                 var form = document.forms["filter_add_form"];
1643
1644                                 if (!form) {
1645                                         form = document.forms["filter_edit_form"];
1646                                 }
1647
1648                                 if (transport.responseXML) {
1649                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1650
1651                                         if (result && result.firstChild) {
1652                                                 if (result.firstChild.nodeValue == "1") {
1653
1654                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1655
1656                                                         return;
1657                                                 }
1658                                         }
1659                                 }
1660
1661                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1662
1663                         } });
1664
1665
1666         } catch (e) {
1667                 exception_error("filterDlgCheckDate", e);
1668         }
1669 }
1670
1671 function explainError(code) {
1672         return displayDlg("explainError", code);
1673 }
1674
1675 // this only searches loaded headlines list, not in CDM
1676 function getRelativePostIds(id, limit) {
1677
1678         if (!limit) limit = 3;
1679
1680         debug("getRelativePostIds: " + id + " limit=" + limit);
1681
1682         var ids = new Array();
1683         var container = document.getElementById("headlinesList");
1684
1685         if (container) {
1686                 var rows = container.rows;
1687
1688                 for (var i = 0; i < rows.length; i++) {
1689                         var r_id = rows[i].id.replace("RROW-", "");
1690
1691                         if (r_id == id) {
1692                                 for (var k = 1; k <= limit; k++) {
1693                                         var nid = false;
1694
1695                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1696                                         if (nid) ids.push(nid);
1697
1698                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1699                                         if (nid) ids.push(nid);
1700                                 }
1701
1702                                 return ids;
1703                         }
1704                 }
1705         }
1706
1707         return false;
1708 }
1709
1710 function openArticleInNewWindow(id) {
1711         try {
1712                 debug("openArticleInNewWindow: " + id);
1713
1714                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1715                 var wname = "ttrss_article_" + id;
1716
1717                 debug(query + " " + wname);
1718
1719                 var w = window.open("", wname);
1720
1721                 if (!w) notify_error("Failed to open window for the article");
1722
1723                 new Ajax.Request(query, {
1724                         onComplete: function(transport) {
1725                                 open_article_callback(transport);
1726                         } });
1727
1728
1729         } catch (e) {
1730                 exception_error("openArticleInNewWindow", e);
1731         }
1732 }
1733
1734 /* http://textsnippets.com/posts/show/835 */
1735
1736 Position.GetWindowSize = function(w) {
1737         w = w ? w : window;
1738         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1739         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1740         return [width, height]
1741 }
1742
1743 /* http://textsnippets.com/posts/show/836 */
1744
1745 Position.Center = function(element, parent) {
1746         var w, h, pw, ph;
1747         var d = Element.getDimensions(element);
1748         w = d.width;
1749         h = d.height;
1750         Position.prepare();
1751         if (!parent) {
1752                 var ws = Position.GetWindowSize();
1753                 pw = ws[0];
1754                 ph = ws[1];
1755         } else {
1756                 pw = parent.offsetWidth;
1757                 ph = parent.offsetHeight;
1758         }
1759         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1760         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1761 }
1762
1763
1764 function labeltest_callback(transport) {
1765         try {
1766                 var container = document.getElementById('label_test_result');
1767
1768                 container.innerHTML = transport.responseText;
1769                 if (!Element.visible(container)) {
1770                         Effect.SlideDown(container, { duration : 0.5 });
1771                 }
1772
1773                 notify("");
1774         } catch (e) {
1775                 exception_error("labeltest_callback", e);
1776         }
1777 }
1778
1779 function labelTest() {
1780
1781         try {
1782                 var container = document.getElementById('label_test_result');
1783
1784                 var form = document.forms['label_edit_form'];
1785
1786                 var sql_exp = form.sql_exp.value;
1787                 var description = form.description.value;
1788
1789                 notify_progress("Loading, please wait...");
1790
1791                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1792                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1793
1794                 new Ajax.Request(query, {
1795                         onComplete: function (transport) {
1796                                 labeltest_callback(transport);
1797                         } });
1798
1799                 return false;
1800
1801         } catch (e) {
1802                 exception_error("labelTest", e);
1803         }
1804 }
1805
1806 function isCdmMode() {
1807         return !document.getElementById("headlinesList");
1808 }
1809
1810 function getSelectedArticleIds2() {
1811         var rows = new Array();
1812         var cdm_mode = isCdmMode();
1813
1814         if (cdm_mode) {
1815                 rows = cdmGetSelectedArticles();
1816         } else {
1817                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1818         }
1819
1820         var ids = new Array();
1821
1822         for (var i = 0; i < rows.length; i++) {
1823                 var chk = document.getElementById("RCHK-" + rows[i]);
1824                 if (chk && chk.checked) {
1825                         ids.push(rows[i]);
1826                 }
1827         }
1828
1829         return ids;
1830 }
1831
1832 function displayHelpInfobox(topic_id) {
1833
1834         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1835
1836         var w = window.open(url, "ttrss_help",
1837                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1838
1839 }
1840
1841 function focus_element(id) {
1842         try {
1843                 var e = document.getElementById(id);
1844                 if (e) e.focus();
1845         } catch (e) {
1846                 exception_error("focus_element", e);
1847         }
1848         return false;
1849 }
1850
1851 function loading_set_progress(p) {
1852         try {
1853                 if (p < last_progress_point || !Element.visible("overlay")) return;
1854
1855                 debug("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1856
1857                 var o = document.getElementById("l_progress_i");
1858
1859 //              o.style.width = (p * 2) + "px";
1860
1861                 new Effect.Scale(o, p, {
1862                         scaleY : false,
1863                         scaleFrom : last_progress_point,
1864                         scaleMode: { originalWidth : 200 },
1865                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1866
1867                 last_progress_point = p;
1868
1869         } catch (e) {
1870                 exception_error("loading_set_progress", e);
1871         }
1872 }
1873
1874 function remove_splash() {
1875         if (Element.visible("overlay")) {
1876                 debug("about to remove splash, OMG!");
1877                 Element.hide("overlay");
1878                 debug("removed splash!");
1879         }
1880 }
1881
1882 function addLabelExample() {
1883         try {
1884                 var form = document.forms["label_edit_form"];
1885
1886                 var text = form.sql_exp;
1887                 var op = form.label_fields[form.label_fields.selectedIndex];
1888                 var p = form.label_fields_param;
1889
1890                 if (op) {
1891                         op = op.value;
1892
1893                         var tmp = "";
1894
1895                         if (text.value != "") {
1896                                 if (text.value.substring(text.value.length-3, 3).toUpperCase() != "AND") {
1897                                         tmp = " AND ";
1898                                 } else {
1899                                         tmp = " ";
1900                                 }
1901                         }
1902
1903                         if (op == "unread") {
1904                                 tmp = tmp + "unread = true";
1905                         }
1906
1907                         if (op == "updated") {
1908                                 tmp = tmp + "last_read is null and unread = false";
1909                         }
1910
1911                         if (op == "kw_title") {
1912                                 if (p.value == "") {
1913                                         alert("This action requires a parameter.");
1914                                         return false;
1915                                 }
1916                                 tmp = tmp + "ttrss_entries.title like '%"+p.value+"%'";
1917                         }
1918
1919                         if (op == "kw_content") {
1920                                 if (p.value == "") {
1921                                         alert("This action requires a parameter.");
1922                                         return false;
1923                                 }
1924
1925                                 tmp = tmp + "ttrss_entries.content like '%"+p.value+"%'";
1926                         }
1927
1928                         if (op == "scoreE") {
1929                                 if (isNaN(parseInt(p.value))) {
1930                                         alert("This action expects numeric parameter.");
1931                                         return false;
1932                                 }
1933                                 tmp = tmp + "score = " + p.value;
1934                         }
1935
1936                         if (op == "scoreG") {
1937                                 if (isNaN(parseInt(p.value))) {
1938                                         alert("This action expects numeric parameter.");
1939                                         return false;
1940                                 }
1941                                 tmp = tmp + "score > " + p.value;
1942                         }
1943
1944                         if (op == "scoreL") {
1945                                 if (isNaN(parseInt(p.value))) {
1946                                         alert("This action expects numeric parameter.");
1947                                         return false;
1948                                 }
1949                                 tmp = tmp + "score < " + p.value;
1950                         }
1951
1952                         if (op == "newerD") {
1953                                 if (isNaN(parseInt(p.value))) {
1954                                         alert("This action expects numeric parameter.");
1955                                         return false;
1956                                 }
1957                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" days'";
1958                         }
1959
1960                         if (op == "newerH") {
1961                                 if (isNaN(parseInt(p.value))) {
1962                                         alert("This action expects numeric parameter.");
1963                                         return false;
1964                                 }
1965
1966                                 tmp = tmp + "updated > NOW() - INTERVAL '"+parseInt(p.value)+" hours'";
1967                         }
1968
1969                         text.value = text.value + tmp;
1970
1971                         p.value = "";
1972
1973                 }
1974
1975         } catch (e) {
1976                 exception_error("addLabelExample", e);
1977         }
1978
1979         return false;
1980 }
1981
1982 function labelFieldsCheck(elem) {
1983         try {
1984                 var op = elem[elem.selectedIndex].value;
1985
1986                 var p = document.forms["label_edit_form"].label_fields_param;
1987
1988                 if (op == "kw_title" || op == "kw_content" || op == "scoreL" ||
1989                                 op == "scoreG" ||       op == "scoreE" || op == "newerD" ||
1990                                 op == "newerH" ) {
1991                         Element.show(p);
1992                 } else {
1993                         Element.hide(p);
1994                 }
1995
1996         } catch (e) {
1997                 exception_error("labelFieldsCheck", e);
1998
1999         }
2000 }
2001
2002 function getSelectedFeedsFromBrowser() {
2003
2004         var list = document.getElementById("browseFeedList");
2005         if (!list) list = document.getElementById("browseBigFeedList");
2006
2007         var selected = new Array();
2008
2009         for (i = 0; i < list.childNodes.length; i++) {
2010                 var child = list.childNodes[i];
2011                 if (child.id && child.id.match("FBROW-")) {
2012                         var id = child.id.replace("FBROW-", "");
2013
2014                         var cb = document.getElementById("FBCHK-" + id);
2015
2016                         if (cb.checked) {
2017                                 selected.push(id);
2018                         }
2019                 }
2020         }
2021
2022         return selected;
2023 }
2024
2025 function updateFeedBrowser() {
2026         try {
2027
2028                 var query = "backend.php?op=rpc&subop=feedBrowser";
2029
2030                 var search = document.getElementById("feed_browser_search");
2031                 var limit = document.getElementById("feed_browser_limit");
2032
2033                 if (limit) {
2034                         query = query + "&limit=" + limit[limit.selectedIndex].value;
2035                 }
2036
2037                 if (search) {
2038                         query = query + "&search=" + param_escape(search.value);
2039                 }
2040
2041                 notify_progress("Loading, please wait...", true);
2042
2043                 new Ajax.Request(query, {
2044                         onComplete: function(transport) {
2045                                 notify('');
2046
2047                                 var c = document.getElementById("browseFeedList");
2048                                 var r = transport.responseXML.getElementsByTagName("content")[0];
2049                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
2050                                 var sb = document.getElementById("feed_browser_subscribe");
2051
2052                                 if (c && r) {
2053                                         c.innerHTML = r.firstChild.nodeValue;
2054                                 }
2055
2056                                 if (nr && sb) {
2057                                         if (nr.getAttribute("value") > 0) {
2058                                                 sb.disabled = false;
2059                                         } else {
2060                                                 sb.disabled = true;
2061                                         }
2062                                 }
2063
2064                         } });
2065
2066
2067         } catch (e) {
2068                 exception_error("updateFeedBrowser", e);
2069         }
2070 }
2071
2072 function browseFeeds(limit) {
2073
2074         try {
2075
2076                 var query = "backend.php?op=pref-feeds&subop=browse";
2077
2078                 notify_progress("Loading, please wait...", true);
2079
2080                 new Ajax.Request(query, {
2081                         onComplete: function(transport) {
2082                                 infobox_callback2(transport);
2083                         } });
2084
2085                 return false;
2086         } catch (e) {
2087                 exception_error("browseFeeds", e);
2088         }
2089 }
2090
2091 function transport_error_check(transport) {
2092         try {
2093                 if (transport.responseXML) {
2094                         var error = transport.responseXML.getElementsByTagName("error")[0];
2095
2096                         if (error) {
2097                                 var code = error.getAttribute("error-code");
2098                                 var msg = error.getAttribute("error-msg");
2099                                 if (code != 0) {
2100                                         fatalError(code, msg);
2101                                         return false;
2102                                 }
2103                         }
2104                 }
2105         } catch (e) {
2106                 exception_error("check_for_error_xml", e);
2107         }
2108         return true;
2109 }
2110