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 var sanity_check_done = false;
   6
   7 /* add method to remove element from array */
   8
   9 Array.prototype.remove = function(s) {
  10         for (var i=0; i < this.length; i++) {
  11                 if (s == this[i]) this.splice(i, 1);
  12         }
  13 }
  14
  15 /* create console.log if it doesn't exist */
  16
  17 if (!window.console) console = {};
  18 console.log = console.log || function(msg) { debug(msg); };
  19 console.warn = console.warn || function(msg) { debug(msg); };
  20 console.error = console.error || function(msg) { debug(msg); };
  21
  22 function exception_error(location, e, ext_info) {
  23         var msg = format_exception_error(location, e);
  24
  25         if (!ext_info) ext_info = false;
  26
  27         disableHotkeys();
  28
  29         try {
  30
  31                 var ebc = $("xebContent");
  32
  33                 if (ebc) {
  34
  35                         Element.show("dialog_overlay");
  36                         Element.show("errorBoxShadow");
  37
  38                         if (ext_info) {
  39                                 if (ext_info.responseText) {
  40                                         ext_info = ext_info.responseText;
  41                                 }
  42                         }
  43
  44                         ebc.innerHTML =
  45                                 "<div><b>Error message:</b></div>" +
  46                                 "<pre>" + msg + "</pre>";
  47
  48                         if (ext_info) {
  49                                 ebc.innerHTML += "<div><b>Additional information:</b></div>" +
  50                                 "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  51                         }
  52
  53                         ebc.innerHTML += "<div><b>Stack trace:</b></div>" +
  54                                 "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  55
  56                 } else {
  57                         alert(msg);
  58                 }
  59
  60         } catch (e) {
  61                 alert(msg);
  62
  63         }
  64
  65 }
  66
  67 function format_exception_error(location, e) {
  68         var msg;
  69
  70         if (e.fileName) {
  71                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  72
  73                 msg = "Exception: " + e.name + ", " + e.message +
  74                         "\nFunction: " + location + "()" +
  75                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  76
  77         } else if (e.description) {
  78                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  79         } else {
  80                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  81         }
  82
  83         console.error("EXCEPTION: " + msg);
  84
  85         return msg;
  86 }
  87
  88
  89 function disableHotkeys() {
  90         hotkeys_enabled = false;
  91 }
  92
  93 function enableHotkeys() {
  94         hotkeys_enabled = true;
  95 }
  96
  97 function param_escape(arg) {
  98         if (typeof encodeURIComponent != 'undefined')
  99                 return encodeURIComponent(arg);
 100         else
 101                 return escape(arg);
 102 }
 103
 104 function param_unescape(arg) {
 105         if (typeof decodeURIComponent != 'undefined')
 106                 return decodeURIComponent(arg);
 107         else
 108                 return unescape(arg);
 109 }
 110
 111 function delay(gap) {
 112         var then,now;
 113         then=new Date().getTime();
 114         now=then;
 115         while((now-then)<gap) {
 116                 now=new Date().getTime();
 117         }
 118 }
 119
 120 var notify_hide_timerid = false;
 121
 122 function hide_notify() {
 123         var n = $("notify");
 124         if (n) {
 125                 n.style.display = "none";
 126         }
 127 }
 128
 129 function notify_silent_next() {
 130         notify_silent = true;
 131 }
 132
 133 function notify_real(msg, no_hide, n_type) {
 134
 135         if (notify_silent) {
 136                 notify_silent = false;
 137                 return;
 138         }
 139
 140         var n = $("notify");
 141         var nb = $("notify_body");
 142
 143         if (!n || !nb) return;
 144
 145         if (notify_hide_timerid) {
 146                 window.clearTimeout(notify_hide_timerid);
 147         }
 148
 149         if (msg == "") {
 150                 if (n.style.display == "block") {
 151                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 152                 }
 153                 return;
 154         } else {
 155                 n.style.display = "block";
 156         }
 157
 158         /* types:
 159
 160                 1 - generic
 161                 2 - progress
 162                 3 - error
 163                 4 - info
 164
 165         */
 166
 167         if (typeof __ != 'undefined') {
 168                 msg = __(msg);
 169         }
 170
 171         if (n_type == 1) {
 172                 n.className = "notify";
 173         } else if (n_type == 2) {
 174                 n.className = "notifyProgress";
 175                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 176         } else if (n_type == 3) {
 177                 n.className = "notifyError";
 178                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 179         } else if (n_type == 4) {
 180                 n.className = "notifyInfo";
 181                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 182         }
 183
 184 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 185
 186         nb.innerHTML = msg;
 187
 188         if (!no_hide) {
 189                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 190         }
 191 }
 192
 193 function notify(msg, no_hide) {
 194         notify_real(msg, no_hide, 1);
 195 }
 196
 197 function notify_progress(msg, no_hide) {
 198         notify_real(msg, no_hide, 2);
 199 }
 200
 201 function notify_error(msg, no_hide) {
 202         notify_real(msg, no_hide, 3);
 203
 204 }
 205
 206 function notify_info(msg, no_hide) {
 207         notify_real(msg, no_hide, 4);
 208 }
 209
 210 function printLockingError() {
 211         notify_info("Please wait until operation finishes.");
 212 }
 213
 214 function cleanSelected(element) {
 215         var content = $(element);
 216
 217         for (i = 0; i < content.rows.length; i++) {
 218                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 219         }
 220 }
 221
 222 function getVisibleUnreadHeadlines() {
 223         var content = $("headlinesList");
 224
 225         var rows = new Array();
 226
 227         if (!content) return rows;
 228
 229         for (i = 0; i < content.rows.length; i++) {
 230                 var row_id = content.rows[i].id.replace("RROW-", "");
 231                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 232                                 rows.push(row_id);
 233                 }
 234         }
 235         return rows;
 236 }
 237
 238 function getVisibleHeadlineIds() {
 239
 240         var content = $("headlinesList");
 241
 242         var rows = new Array();
 243
 244         if (!content) return rows;
 245
 246         for (i = 0; i < content.rows.length; i++) {
 247                 var row_id = content.rows[i].id.replace("RROW-", "");
 248                 if (row_id.length > 0) {
 249                                 rows.push(row_id);
 250                 }
 251         }
 252         return rows;
 253 }
 254
 255 function getFirstVisibleHeadlineId() {
 256         if (isCdmMode()) {
 257                 var rows = cdmGetVisibleArticles();
 258                 return rows[0];
 259         } else {
 260                 var rows = getVisibleHeadlineIds();
 261                 return rows[0];
 262         }
 263 }
 264
 265 function getLastVisibleHeadlineId() {
 266         if (isCdmMode()) {
 267                 var rows = cdmGetVisibleArticles();
 268                 return rows[rows.length-1];
 269         } else {
 270                 var rows = getVisibleHeadlineIds();
 271                 return rows[rows.length-1];
 272         }
 273 }
 274
 275 function markHeadline(id) {
 276         var row = $("RROW-" + id);
 277         if (row) {
 278                 var is_active = false;
 279
 280                 if (row.className.match("Active")) {
 281                         is_active = true;
 282                 }
 283                 row.className = row.className.replace("Selected", "");
 284                 row.className = row.className.replace("Active", "");
 285                 row.className = row.className.replace("Insensitive", "");
 286
 287                 if (is_active) {
 288                         row.className = row.className = "Active";
 289                 }
 290
 291                 var check = $("RCHK-" + id);
 292
 293                 if (check) {
 294                         check.checked = true;
 295                 }
 296
 297                 row.className = row.className + "Selected";
 298
 299         }
 300 }
 301
 302 function getFeedIds() {
 303         var content = $("feedsList");
 304
 305         var rows = new Array();
 306
 307         for (i = 0; i < content.rows.length; i++) {
 308                 var id = content.rows[i].id.replace("FEEDR-", "");
 309                 if (id.length > 0) {
 310                         rows.push(id);
 311                 }
 312         }
 313
 314         return rows;
 315 }
 316
 317 function setCookie(name, value, lifetime, path, domain, secure) {
 318
 319         var d = false;
 320
 321         if (lifetime) {
 322                 d = new Date();
 323                 d.setTime(d.getTime() + (lifetime * 1000));
 324         }
 325
 326         console.log("setCookie: " + name + " => " + value + ": " + d);
 327
 328         int_setCookie(name, value, d, path, domain, secure);
 329
 330 }
 331
 332 function int_setCookie(name, value, expires, path, domain, secure) {
 333         document.cookie= name + "=" + escape(value) +
 334                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 335                 ((path) ? "; path=" + path : "") +
 336                 ((domain) ? "; domain=" + domain : "") +
 337                 ((secure) ? "; secure" : "");
 338 }
 339
 340 function delCookie(name, path, domain) {
 341         if (getCookie(name)) {
 342                 document.cookie = name + "=" +
 343                 ((path) ? ";path=" + path : "") +
 344                 ((domain) ? ";domain=" + domain : "" ) +
 345                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 346         }
 347 }
 348
 349
 350 function getCookie(name) {
 351
 352         var dc = document.cookie;
 353         var prefix = name + "=";
 354         var begin = dc.indexOf("; " + prefix);
 355         if (begin == -1) {
 356             begin = dc.indexOf(prefix);
 357             if (begin != 0) return null;
 358         }
 359         else {
 360             begin += 2;
 361         }
 362         var end = document.cookie.indexOf(";", begin);
 363         if (end == -1) {
 364             end = dc.length;
 365         }
 366         return unescape(dc.substring(begin + prefix.length, end));
 367 }
 368
 369 function gotoPreferences() {
 370         document.location.href = "prefs.php";
 371 }
 372
 373 function gotoMain() {
 374         document.location.href = "tt-rss.php";
 375 }
 376
 377 function gotoExportOpml() {
 378         document.location.href = "opml.php?op=Export";
 379 }
 380
 381 function parse_counters(reply, scheduled_call) {
 382         try {
 383
 384                 var feeds_found = 0;
 385
 386                 var elems = JSON.parse(reply.firstChild.nodeValue);
 387
 388                 for (var l = 0; l < elems.length; l++) {
 389
 390                         var id = elems[l].id
 391                         var kind = elems[l].kind;
 392                         var ctr = parseInt(elems[l].counter)
 393                         var error = elems[l].error;
 394                         var has_img = elems[l].has_img;
 395                         var updated = elems[l].updated;
 396                         var title = elems[l].title;
 397                         var xmsg = elems[l].xmsg;
 398
 399                         if (id == "global-unread") {
 400
 401                                 if (ctr > global_unread) {
 402                                         offlineDownloadStart(1);
 403                                 }
 404
 405                                 global_unread = ctr;
 406                                 updateTitle();
 407                                 continue;
 408                         }
 409
 410                         if (id == "subscribed-feeds") {
 411                                 feeds_found = ctr;
 412                                 continue;
 413                         }
 414
 415                         if (kind && kind == "cat") {
 416                                 var catctr = $("FCATCTR-" + id);
 417                                 if (catctr) {
 418                                         catctr.innerHTML = "(" + ctr + ")";
 419                                         if (ctr > 0) {
 420                                                 catctr.className = "catCtrHasUnread";
 421                                         } else {
 422                                                 catctr.className = "catCtrNoUnread";
 423                                         }
 424                                 }
 425                                 continue;
 426                         }
 427
 428                         var feedctr = $("FEEDCTR-" + id);
 429                         var feedu = $("FEEDU-" + id);
 430                         var feedr = $("FEEDR-" + id);
 431                         var feed_img = $("FIMG-" + id);
 432                         var feedlink = $("FEEDL-" + id);
 433                         var feedupd = $("FLUPD-" + id);
 434
 435                         if (updated && feedlink) {
 436                                 if (error) {
 437                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 438                                 } else {
 439                                         feedlink.title = "Updated: " + updated;
 440                                 }
 441                         }
 442
 443                         if (feedupd) {
 444                                 if (!updated) updated = "";
 445
 446                                 if (error) {
 447                                         if (xmsg) {
 448                                                 feedupd.innerHTML = updated + " " + xmsg + " (Error)";
 449                                         } else {
 450                                                 feedupd.innerHTML = updated + " (Error)";
 451                                         }
 452                                 } else {
 453                                         if (xmsg) {
 454                                                 feedupd.innerHTML = updated + " " + xmsg;
 455                                         } else {
 456                                                 feedupd.innerHTML = updated;
 457                                         }
 458                                 }
 459                         }
 460
 461                         if (has_img && feed_img) {
 462                                 if (!feed_img.src.match(id + ".ico")) {
 463                                         feed_img.src = getInitParam("icons_url") + "/" + id + ".ico";
 464                                 }
 465                         }
 466
 467                         if (feedlink && title) {
 468                                 feedlink.innerHTML = title;
 469                         }
 470
 471                         if (feedctr && feedu && feedr) {
 472
 473                                 if (parseInt(ctr) > 0 &&
 474                                                 parseInt(feedu.innerHTML) < parseInt(ctr) &&
 475                                                 id == getActiveFeedId() && scheduled_call) {
 476
 477                                         displayNewContentPrompt(id);
 478                                 }
 479
 480                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 481
 482                                 feedu.innerHTML = ctr;
 483
 484                                 if (error) {
 485                                         feedr.className = feedr.className.replace("feed", "error");
 486                                 } else if (id > 0) {
 487                                         feedr.className = feedr.className.replace("error", "feed");
 488                                 }
 489
 490                                 if (ctr > 0) {
 491                                         feedctr.className = "feedCtrHasUnread";
 492                                         if (!feedr.className.match("Unread")) {
 493                                                 var is_selected = feedr.className.match("Selected");
 494
 495                                                 feedr.className = feedr.className.replace("Selected", "");
 496                                                 feedr.className = feedr.className.replace("Unread", "");
 497
 498                                                 feedr.className = feedr.className + "Unread";
 499
 500                                                 if (is_selected) {
 501                                                         feedr.className = feedr.className + "Selected";
 502                                                 }
 503
 504                                         }
 505
 506                                         if (row_needs_hl &&
 507                                                         !getInitParam("theme_options").match('no_highlights')) {
 508                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 509                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 510
 511                                                 cache_invalidate("F:" + id);
 512                                         }
 513                                 } else {
 514                                         feedctr.className = "feedCtrNoUnread";
 515                                         feedr.className = feedr.className.replace("Unread", "");
 516                                 }
 517                         }
 518                 }
 519
 520                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 521
 522                 var feeds_stored = number_of_feeds;
 523
 524                 console.log("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 525
 526                 if (feeds_stored != feeds_found) {
 527                         number_of_feeds = feeds_found;
 528
 529                         if (feeds_stored != 0 && feeds_found != 0) {
 530                                 console.log("Subscribed feed number changed, refreshing feedlist");
 531                                 setTimeout('updateFeedList(false, false)', 50);
 532                         }
 533                 } else {
 534 /*                      var fl = $("feeds-frame").innerHTML;
 535                         if (fl) {
 536                                 cache_invalidate("FEEDLIST");
 537                                 cache_inject("FEEDLIST", fl, getInitParam("num_feeds"));
 538                         } */
 539                 }
 540
 541         } catch (e) {
 542                 exception_error("parse_counters", e);
 543         }
 544 }
 545
 546 function parse_counters_reply(transport, scheduled_call) {
 547
 548         if (!transport.responseXML) {
 549                 notify_error("Backend did not return valid XML", true);
 550                 return;
 551         }
 552
 553         var reply = transport.responseXML.firstChild;
 554
 555         if (!reply) {
 556                 notify_error("Backend did not return expected XML object", true);
 557                 updateTitle("");
 558                 return;
 559         }
 560
 561         if (!transport_error_check(transport)) return;
 562
 563         var counters = reply.getElementsByTagName("counters")[0];
 564
 565         if (counters)
 566                 parse_counters(counters, scheduled_call);
 567
 568         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 569
 570         if (runtime_info)
 571                 parse_runtime_info(runtime_info);
 572
 573         if (feedsSortByUnread()) {
 574                 resort_feedlist();
 575         }
 576
 577         hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 578
 579 }
 580
 581 function all_counters_callback2(transport, async_call) {
 582         try {
 583                 if (async_call) async_counters_work = true;
 584
 585                 if (offline_mode) return;
 586
 587                 console.log("<b>all_counters_callback2 IN: " + transport + "</b>");
 588                 parse_counters_reply(transport);
 589                 console.log("<b>all_counters_callback2 OUT: " + transport + "</b>");
 590
 591         } catch (e) {
 592                 exception_error("all_counters_callback2", e, transport);
 593         }
 594 }
 595
 596 function get_feed_unread(id) {
 597         try {
 598                 return parseInt($("FEEDU-" + id).innerHTML);
 599         } catch (e) {
 600                 return -1;
 601         }
 602 }
 603
 604 function get_cat_unread(id) {
 605         try {
 606                 var ctr = $("FCATCTR-" + id).innerHTML;
 607                 ctr = ctr.replace("(", "");
 608                 ctr = ctr.replace(")", "");
 609                 return parseInt(ctr);
 610         } catch (e) {
 611                 return -1;
 612         }
 613 }
 614
 615 function get_feed_entry_unread(elem) {
 616
 617         var id = elem.id.replace("FEEDR-", "");
 618
 619         if (id <= 0) {
 620                 return -1;
 621         }
 622
 623         try {
 624                 return parseInt($("FEEDU-" + id).innerHTML);
 625         } catch (e) {
 626                 return -1;
 627         }
 628 }
 629
 630 function get_feed_entry_name(elem) {
 631         var id = elem.id.replace("FEEDR-", "");
 632         return getFeedName(id);
 633 }
 634
 635
 636 function resort_category(node, cat_mode) {
 637
 638         try {
 639
 640                 console.log("resort_category: " + node + " CM=" + cat_mode);
 641
 642                 var by_unread = feedsSortByUnread();
 643
 644                 var list = node.getElementsByTagName("LI");
 645
 646                 for (i = 0; i < list.length; i++) {
 647
 648                         for (j = i+1; j < list.length; j++) {
 649
 650                                 var tmp_val = get_feed_entry_unread(list[i]);
 651                                 var cur_val = get_feed_entry_unread(list[j]);
 652
 653                                 var tmp_name = get_feed_entry_name(list[i]);
 654                                 var cur_name = get_feed_entry_name(list[j]);
 655
 656                                 var valid_pair = cat_mode || (list[i].id.match(/FEEDR-[0-9]/) &&
 657                                                 list[j].id.match(/FEEDR-[0-9]/));
 658
 659                                 if (valid_pair && ((by_unread && (cur_val > tmp_val)) || (!by_unread && (cur_name < tmp_name)))) {
 660                                         tempnode_i = list[i].cloneNode(true);
 661                                         tempnode_j = list[j].cloneNode(true);
 662                                         node.replaceChild(tempnode_i, list[j]);
 663                                         node.replaceChild(tempnode_j, list[i]);
 664                                 }
 665                         }
 666                 }
 667
 668         } catch (e) {
 669                 exception_error("resort_category", e);
 670         }
 671
 672 }
 673
 674 function resort_feedlist() {
 675         console.log("resort_feedlist");
 676
 677         if ($("FCATLIST--1")) {
 678
 679                 var lists = document.getElementsByTagName("UL");
 680
 681                 for (var i = 0; i < lists.length; i++) {
 682                         if (lists[i].id && lists[i].id.match("FCATLIST-")) {
 683                                 resort_category(lists[i], true);
 684                         }
 685                 }
 686
 687         } else {
 688                 resort_category($("feedList"), false);
 689         }
 690 }
 691
 692 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 693   * * @author Sundar Dorai-Raj
 694   * * Email: sdoraira@vt.edu
 695   * * This program is free software; you can redistribute it and/or
 696   * * modify it under the terms of the GNU General Public License
 697   * * as published by the Free Software Foundation; either version 2
 698   * * of the License, or (at your option) any later version,
 699   * * provided that any use properly credits the author.
 700   * * This program is distributed in the hope that it will be useful,
 701   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 702   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 703   * * GNU General Public License for more details at http://www.gnu.org * * */
 704
 705   var numbers=".0123456789";
 706   function isNumeric(x) {
 707     // is x a String or a character?
 708     if(x.length>1) {
 709       // remove negative sign
 710       x=Math.abs(x)+"";
 711       for(j=0;j<x.length;j++) {
 712         // call isNumeric recursively for each character
 713         number=isNumeric(x.substring(j,j+1));
 714         if(!number) return number;
 715       }
 716       return number;
 717     }
 718     else {
 719       // if x is number return true
 720       if(numbers.indexOf(x)>=0) return true;
 721       return false;
 722     }
 723   }
 724
 725
 726 function hideOrShowFeeds(hide) {
 727
 728         try {
 729
 730         console.log("hideOrShowFeeds: " + hide);
 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
 739                                 var id = lists[i].id.replace("FCATLIST-", "");
 740                                 hideOrShowFeedsCategory(id, hide);
 741                         }
 742                 }
 743
 744         } else {
 745                 hideOrShowFeedsCategory(null, hide);
 746         }
 747
 748         } catch (e) {
 749                 exception_error("hideOrShowFeeds", e);
 750         }
 751 }
 752
 753 function hideOrShowFeedsCategory(id, hide) {
 754
 755         try {
 756
 757                 var node = null;
 758                 var cat_node = null;
 759
 760                 if (id) {
 761                         node = $("FCATLIST-" + id);
 762                         cat_node = $("FCAT-" + id);
 763                 } else {
 764                         node = $("feedList"); // no categories
 765                 }
 766
 767         //      console.log("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 768
 769                 var cat_unread = 0;
 770
 771                 if (!node) {
 772                         console.log("hideOrShowFeeds: passed node is null, aborting");
 773                         return;
 774                 }
 775
 776         //      console.log("cat: " + node.id);
 777
 778                 if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 779                         for (i = 0; i < node.childNodes.length; i++) {
 780                                 if (node.childNodes[i].nodeName != "LI") { continue; }
 781
 782                                 if (node.childNodes[i].style != undefined) {
 783
 784                                         var has_unread = (node.childNodes[i].className != "feed" &&
 785                                                 node.childNodes[i].className != "label" &&
 786                                                 !(!getInitParam("hide_read_shows_special") &&
 787                                                         node.childNodes[i].className == "virt") &&
 788                                                 node.childNodes[i].className != "error" &&
 789                                                 node.childNodes[i].className != "tag");
 790
 791         //                              console.log(node.childNodes[i].id + " --> " + has_unread);
 792
 793                                         if (hide && !has_unread) {
 794                                                 //node.childNodes[i].style.display = "none";
 795                                                 var id = node.childNodes[i].id;
 796                                                 Effect.Fade(node.childNodes[i], {duration : 0.3,
 797                                                         queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 798                                         }
 799
 800                                         if (!hide) {
 801                                                 node.childNodes[i].style.display = "list-item";
 802                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 803                                         }
 804
 805                                         if (has_unread) {
 806                                                 node.childNodes[i].style.display = "list-item";
 807                                                 cat_unread++;
 808                                                 //Effect.Appear(node.childNodes[i], {duration : 0.3});
 809                                                 //Effect.Highlight(node.childNodes[i]);
 810                                         }
 811                                 }
 812                         }
 813                 }
 814
 815         //      console.log("end cat: " + node.id + " unread " + cat_unread);
 816
 817                 if (cat_node) {
 818
 819                         if (cat_unread == 0) {
 820                                 if (cat_node.style == undefined) {
 821                                         console.log("ERROR: supplied cat_node " + cat_node +
 822                                                 " has no styles. WTF?");
 823                                         return;
 824                                 }
 825                                 if (hide) {
 826                                         //cat_node.style.display = "none";
 827                                         Effect.Fade(cat_node, {duration : 0.3,
 828                                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
 829                                 } else {
 830                                         cat_node.style.display = "list-item";
 831                                 }
 832                         } else {
 833                                 try {
 834                                         cat_node.style.display = "list-item";
 835                                 } catch (e) {
 836                                         console.log(e);
 837                                 }
 838                         }
 839                 }
 840
 841 //      console.log("unread for category: " + cat_unread);
 842
 843         } catch (e) {
 844                 exception_error("hideOrShowFeedsCategory", e);
 845         }
 846 }
 847
 848 function selectTableRow(r, do_select) {
 849         r.className = r.className.replace("Selected", "");
 850
 851         if (do_select) {
 852                 r.className = r.className + "Selected";
 853         }
 854 }
 855
 856 function selectTableRowById(elem_id, check_id, do_select) {
 857
 858         try {
 859
 860                 var row = $(elem_id);
 861
 862                 if (row) {
 863                         selectTableRow(row, do_select);
 864                 }
 865
 866                 var check = $(check_id);
 867
 868                 if (check) {
 869                         check.checked = do_select;
 870                 }
 871         } catch (e) {
 872                 exception_error("selectTableRowById", e);
 873         }
 874 }
 875
 876 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 877         classcheck, reset_others) {
 878
 879         var content = $(content_id);
 880
 881         if (!content) {
 882                 console.log("[selectTableRows] Element " + content_id + " not found.");
 883                 return;
 884         }
 885
 886         for (i = 0; i < content.rows.length; i++) {
 887                 if (Element.visible(content.rows[i])) {
 888                         if (!classcheck || content.rows[i].className.match(classcheck)) {
 889
 890                                 if (content.rows[i].id.match(prefix)) {
 891                                         selectTableRow(content.rows[i], do_select);
 892
 893                                         var row_id = content.rows[i].id.replace(prefix, "");
 894                                         var check = $(check_prefix + row_id);
 895
 896                                         if (check) {
 897                                                 check.checked = do_select;
 898                                         }
 899                                 } else if (reset_others) {
 900                                         selectTableRow(content.rows[i], false);
 901
 902                                         var row_id = content.rows[i].id.replace(prefix, "");
 903                                         var check = $(check_prefix + row_id);
 904
 905                                         if (check) {
 906                                                 check.checked = false;
 907                                         }
 908
 909                                 }
 910                         } else if (reset_others) {
 911                                 selectTableRow(content.rows[i], false);
 912
 913                                 var row_id = content.rows[i].id.replace(prefix, "");
 914                                 var check = $(check_prefix + row_id);
 915
 916                                 if (check) {
 917                                         check.checked = false;
 918                                 }
 919
 920                         }
 921                 }
 922         }
 923 }
 924
 925 function getSelectedTableRowIds(content_id, prefix) {
 926
 927         var content = $(content_id);
 928
 929         if (!content) {
 930                 console.log("[getSelectedTableRowIds] Element " + content_id + " not found.");
 931                 return new Array();
 932         }
 933
 934         var sel_rows = new Array();
 935
 936         for (i = 0; i < content.rows.length; i++) {
 937                 if (content.rows[i].id.match(prefix) &&
 938                                 content.rows[i].className.match("Selected")) {
 939
 940                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 941                         sel_rows.push(row_id);
 942                 }
 943         }
 944
 945         return sel_rows;
 946
 947 }
 948
 949 function toggleSelectRowById(sender, id) {
 950         var row = $(id);
 951
 952         if (sender.checked) {
 953                 if (!row.className.match("Selected")) {
 954                         row.className = row.className + "Selected";
 955                 }
 956         } else {
 957                 if (row.className.match("Selected")) {
 958                         row.className = row.className.replace("Selected", "");
 959                 }
 960         }
 961 }
 962
 963 function toggleSelectListRow(sender) {
 964         var parent_row = sender.parentNode;
 965
 966         if (sender.checked) {
 967                 if (!parent_row.className.match("Selected")) {
 968                         parent_row.className = parent_row.className + "Selected";
 969                 }
 970         } else {
 971                 if (parent_row.className.match("Selected")) {
 972                         parent_row.className = parent_row.className.replace("Selected", "");
 973                 }
 974         }
 975 }
 976
 977 function tSR(sender) {
 978         return toggleSelectRow(sender);
 979 }
 980
 981 function toggleSelectRow(sender) {
 982         var parent_row = sender.parentNode.parentNode;
 983
 984         if (sender.checked) {
 985                 if (!parent_row.className.match("Selected")) {
 986                         parent_row.className = parent_row.className + "Selected";
 987                 }
 988         } else {
 989                 if (parent_row.className.match("Selected")) {
 990                         parent_row.className = parent_row.className.replace("Selected", "");
 991                 }
 992         }
 993 }
 994
 995 function getNextUnreadCat(id) {
 996         try {
 997                 var rows = $("feedList").getElementsByTagName("LI");
 998                 var feeds = new Array();
 999
1000                 var unread_only = true;
1001                 var is_cat = true;
1002
1003                 for (var i = 0; i < rows.length; i++) {
1004                         if (rows[i].id.match("FCAT-")) {
1005                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1006
1007                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1008
1009                                         if (cat_id >= 0) {
1010                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1011                                                         feeds.push(cat_id);
1012                                                 }
1013                                         }
1014                                 }
1015                         }
1016                 }
1017
1018                 var idx = feeds.indexOf(id);
1019                 if (idx != -1 && idx < feeds.length) {
1020                         return feeds[idx+1];
1021                 } else {
1022                         return feeds.shift();
1023                 }
1024
1025         } catch (e) {
1026                 exception_error("getNextUnreadCat", e);
1027         }
1028 }
1029
1030 function getRelativeFeedId2(id, is_cat, direction, unread_only) {
1031         try {
1032
1033 //              alert(id + " IC: " + is_cat + " D: " + direction + " U: " + unread_only);
1034
1035                 var rows = $("feedList").getElementsByTagName("LI");
1036                 var feeds = new Array();
1037
1038                 for (var i = 0; i < rows.length; i++) {
1039                         if (rows[i].id.match("FEEDR-")) {
1040
1041                                 if (rows[i].id == "FEEDR-" + id && !is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1042
1043                                         if (!unread_only ||
1044                                                         (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1045                                                 feeds.push(rows[i].id.replace("FEEDR-", ""));
1046                                         }
1047                                 }
1048                         }
1049
1050                         if (rows[i].id.match("FCAT-")) {
1051                                 if (rows[i].id == "FCAT-" + id && is_cat || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1052
1053                                         var cat_id = parseInt(rows[i].id.replace("FCAT-", ""));
1054
1055                                         if (cat_id >= 0) {
1056                                                 if (!unread_only || get_cat_unread(cat_id) > 0) {
1057                                                         feeds.push("CAT:"+cat_id);
1058                                                 }
1059                                         }
1060                                 }
1061                         }
1062                 }
1063
1064 //              alert(feeds.toString());
1065
1066                 if (!id) {
1067                         if (direction == "next") {
1068                                 return feeds.shift();
1069                         } else {
1070                                 return feeds.pop();
1071                         }
1072                 } else {
1073                         if (direction == "next") {
1074                                 if (is_cat) id = "CAT:" + id;
1075                                 var idx = feeds.indexOf(id);
1076                                 if (idx != -1 && idx < feeds.length) {
1077                                         return feeds[idx+1];
1078                                 } else {
1079                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1080                                 }
1081                         } else {
1082                                 if (is_cat) id = "CAT:" + id;
1083                                 var idx = feeds.indexOf(id);
1084                                 if (idx > 0) {
1085                                         return feeds[idx-1];
1086                                 } else {
1087                                         return getRelativeFeedId2(false, is_cat, direction, unread_only);
1088                                 }
1089                         }
1090
1091                 }
1092
1093         } catch (e) {
1094                 exception_error("getRelativeFeedId2", e);
1095         }
1096 }
1097
1098 function checkboxToggleElement(elem, id) {
1099         if (elem.checked) {
1100                 Effect.Appear(id, {duration : 0.5});
1101         } else {
1102                 Effect.Fade(id, {duration : 0.5});
1103         }
1104 }
1105
1106 function dropboxSelect(e, v) {
1107         for (i = 0; i < e.length; i++) {
1108                 if (e[i].value == v) {
1109                         e.selectedIndex = i;
1110                         break;
1111                 }
1112         }
1113 }
1114
1115 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1116 // bugfixed just a little bit :-)
1117 function getURLParam(strParamName){
1118   var strReturn = "";
1119   var strHref = window.location.href;
1120
1121   if (strHref.indexOf("#") == strHref.length-1) {
1122                 strHref = strHref.substring(0, strHref.length-1);
1123   }
1124
1125   if ( strHref.indexOf("?") > -1 ){
1126     var strQueryString = strHref.substr(strHref.indexOf("?"));
1127     var aQueryString = strQueryString.split("&");
1128     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1129       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1130         var aParam = aQueryString[iParam].split("=");
1131         strReturn = aParam[1];
1132         break;
1133       }
1134     }
1135   }
1136   return strReturn;
1137 }
1138
1139 function leading_zero(p) {
1140         var s = String(p);
1141         if (s.length == 1) s = "0" + s;
1142         return s;
1143 }
1144
1145 function make_timestamp() {
1146         var d = new Date();
1147
1148         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1149                         ":" + leading_zero(d.getSeconds());
1150 }
1151
1152
1153 function closeErrorBox() {
1154
1155         if (Element.visible("errorBoxShadow")) {
1156                 Element.hide("dialog_overlay");
1157                 Element.hide("errorBoxShadow");
1158
1159                 enableHotkeys();
1160         }
1161
1162         return false;
1163 }
1164
1165 function closeInfoBox(cleanup) {
1166
1167         try {
1168                 enableHotkeys();
1169
1170                 if (Element.visible("infoBoxShadow")) {
1171                         Element.hide("dialog_overlay");
1172                         Element.hide("infoBoxShadow");
1173
1174                         if (cleanup) $("infoBox").innerHTML = "&nbsp;";
1175                 }
1176         } catch (e) {
1177                 exception_error("closeInfoBox", e);
1178         }
1179
1180         return false;
1181 }
1182
1183
1184 function displayDlg(id, param, callback) {
1185
1186         notify_progress("Loading, please wait...", true);
1187
1188         disableHotkeys();
1189
1190         var query = "?op=dlg&id=" +
1191                 param_escape(id) + "&param=" + param_escape(param);
1192
1193         new Ajax.Request("backend.php", {
1194                 parameters: query,
1195                 onComplete: function (transport) {
1196                         infobox_callback2(transport);
1197                         if (callback) callback(transport);
1198                 } });
1199
1200         return false;
1201 }
1202
1203 function infobox_submit_callback2(transport) {
1204         closeInfoBox();
1205
1206         try {
1207                 // called from prefs, reload tab
1208                 if (typeof active_tab != 'undefined' && active_tab) {
1209                         selectTab(active_tab, false);
1210                 }
1211         } catch (e) { }
1212
1213         if (transport.responseText) {
1214                 notify_info(transport.responseText);
1215         }
1216 }
1217
1218 function infobox_callback2(transport) {
1219         try {
1220
1221                 console.log("infobox_callback2");
1222
1223                 var box = $('infoBox');
1224
1225                 if (box) {
1226
1227                         if (!getInitParam("infobox_disable_overlay")) {
1228                                 Element.show("dialog_overlay");
1229                         }
1230
1231                         box.innerHTML=transport.responseText;
1232                         Element.show("infoBoxShadow");
1233                         //Effect.SlideDown("infoBoxShadow", {duration : 1.0});
1234
1235
1236                 }
1237
1238                 disableHotkeys();
1239
1240                 notify("");
1241         } catch (e) {
1242                 exception_error("infobox_callback2", e);
1243         }
1244 }
1245
1246 function createFilter() {
1247
1248         try {
1249
1250                 var form = document.forms['filter_add_form'];
1251                 var reg_exp = form.reg_exp.value;
1252
1253                 if (reg_exp == "") {
1254                         alert(__("Can't add filter: nothing to match on."));
1255                         return false;
1256                 }
1257
1258                 var query = Form.serialize("filter_add_form");
1259
1260                 // we can be called from some other tab in Prefs
1261                 if (typeof active_tab != 'undefined' && active_tab) {
1262                         active_tab = "filterConfig";
1263                 }
1264
1265                 new Ajax.Request("backend.php?" + query, {
1266                         onComplete: function (transport) {
1267                                 infobox_submit_callback2(transport);
1268                         } });
1269
1270                 return true;
1271
1272         } catch (e) {
1273                 exception_error("createFilter", e);
1274         }
1275 }
1276
1277 function isValidURL(s) {
1278         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1279 }
1280
1281 function subscribeToFeed() {
1282
1283         try {
1284
1285         var form = document.forms['feed_add_form'];
1286         var feed_url = form.feed_url.value;
1287
1288         if (feed_url == "") {
1289                 alert(__("Can't subscribe: no feed URL given."));
1290                 return false;
1291         }
1292
1293         notify_progress(__("Subscribing to feed..."), true);
1294
1295         var query = Form.serialize("feed_add_form");
1296
1297         console.log("subscribe q: " + query);
1298
1299         Form.disable("feed_add_form");
1300
1301         new Ajax.Request("backend.php", {
1302                 parameters: query,
1303                 onComplete: function(transport) {
1304                         //dlg_frefresh_callback(transport);
1305
1306                         notify('');
1307
1308                         var result = transport.responseXML.getElementsByTagName('result')[0];
1309                         var rc = parseInt(result.getAttribute('code'));
1310
1311                         Form.enable("feed_add_form");
1312
1313                         switch (rc) {
1314                         case 1:
1315                                 closeInfoBox();
1316                                 notify_info(__("Subscribed to %s").replace("%s", feed_url));
1317
1318                                 if (inPreferences()) {
1319                                         updateFeedList();
1320                                 } else {
1321                                         setTimeout('updateFeedList(false, false)', 50);
1322                                 }
1323                                 break;
1324                         case 2:
1325                                 alert(__("Can't subscribe to the specified URL."));
1326                                 break;
1327                         case 0:
1328                                 alert(__("You are already subscribed to this feed."));
1329                                 break;
1330                         }
1331
1332                 } });
1333
1334         } catch (e) {
1335                 exception_error("subscribeToFeed", e);
1336         }
1337
1338         return false;
1339 }
1340
1341 function filterCR(e, f)
1342 {
1343      var key;
1344
1345      if(window.event)
1346           key = window.event.keyCode;     //IE
1347      else
1348           key = e.which;     //firefox
1349
1350         if (key == 13) {
1351                 if (typeof f != 'undefined') {
1352                         f();
1353                         return false;
1354                 } else {
1355                         return false;
1356                 }
1357         } else {
1358                 return true;
1359         }
1360 }
1361
1362 var debug_last_class = "even";
1363
1364 function debug(msg) {
1365
1366         if (debug_last_class == "even") {
1367                 debug_last_class = "odd";
1368         } else {
1369                 debug_last_class = "even";
1370         }
1371
1372         var c = $('debug_output');
1373         if (c && Element.visible(c)) {
1374                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1375                         c.removeChild(c.lastChild);
1376                 }
1377
1378                 var ts = make_timestamp();
1379                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1380                         msg + "</li>" + c.innerHTML;
1381         }
1382 }
1383
1384 function getInitParam(key) {
1385         return init_params[key];
1386 }
1387
1388 function setInitParam(key, value) {
1389         init_params[key] = value;
1390 }
1391
1392 function fatalError(code, msg, ext_info) {
1393         try {
1394
1395                 if (!ext_info) ext_info = "N/A";
1396
1397                 if (code == 6) {
1398                         window.location.href = "tt-rss.php";
1399                 } else if (code == 5) {
1400                         window.location.href = "update.php";
1401                 } else {
1402
1403                         if (msg == "") msg = "Unknown error";
1404
1405                         var ebc = $("xebContent");
1406
1407                         if (ebc) {
1408
1409                                 Element.show("dialog_overlay");
1410                                 Element.show("errorBoxShadow");
1411                                 Element.hide("xebBtn");
1412
1413                                 if (ext_info) {
1414                                         if (ext_info.responseText) {
1415                                                 ext_info = ext_info.responseText;
1416                                         }
1417                                 }
1418
1419                                 ebc.innerHTML =
1420                                         "<div><b>Error message:</b></div>" +
1421                                         "<pre>" + msg + "</pre>" +
1422                                         "<div><b>Additional information:</b></div>" +
1423                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
1424                         }
1425                 }
1426
1427         } catch (e) {
1428                 exception_error("fatalError", e);
1429         }
1430 }
1431
1432 function getFeedName(id, is_cat) {
1433         var e;
1434
1435         if (is_cat) {
1436                 e = $("FCATN-" + id);
1437         } else {
1438                 e = $("FEEDN-" + id);
1439         }
1440         if (e) {
1441                 return e.innerHTML.stripTags();
1442         } else {
1443                 return null;
1444         }
1445 }
1446
1447 function filterDlgCheckType(sender) {
1448
1449         try {
1450
1451                 var ftype = sender[sender.selectedIndex].value;
1452
1453                 var form = document.forms["filter_add_form"];
1454
1455                 if (!form) {
1456                         form = document.forms["filter_edit_form"];
1457                 }
1458
1459                 if (!form) {
1460                         console.log("filterDlgCheckType: can't find form!");
1461                         return;
1462                 }
1463
1464                 // if selected filter type is 5 (Date) enable the modifier dropbox
1465                 if (ftype == 5) {
1466                         Element.show("filter_dlg_date_mod_box");
1467                         Element.show("filter_dlg_date_chk_box");
1468                 } else {
1469                         Element.hide("filter_dlg_date_mod_box");
1470                         Element.hide("filter_dlg_date_chk_box");
1471
1472                 }
1473
1474         } catch (e) {
1475                 exception_error("filterDlgCheckType", e);
1476         }
1477
1478 }
1479
1480 function filterDlgCheckAction(sender) {
1481
1482         try {
1483
1484                 var action = sender[sender.selectedIndex].value;
1485
1486                 var form = document.forms["filter_add_form"];
1487
1488                 if (!form) {
1489                         form = document.forms["filter_edit_form"];
1490                 }
1491
1492                 if (!form) {
1493                         console.log("filterDlgCheckAction: can't find form!");
1494                         return;
1495                 }
1496
1497                 var action_param = $("filter_dlg_param_box");
1498
1499                 if (!action_param) {
1500                         console.log("filterDlgCheckAction: can't find action param box!");
1501                         return;
1502                 }
1503
1504                 // if selected action supports parameters, enable params field
1505                 if (action == 4 || action == 6 || action == 7) {
1506                         Element.show(action_param);
1507                         if (action != 7) {
1508                                 Element.show(form.action_param);
1509                                 Element.hide(form.action_param_label);
1510                         } else {
1511                                 Element.show(form.action_param_label);
1512                                 Element.hide(form.action_param);
1513                         }
1514                 } else {
1515                         Element.hide(action_param);
1516                 }
1517
1518         } catch (e) {
1519                 exception_error("filterDlgCheckAction", e);
1520         }
1521
1522 }
1523
1524 function filterDlgCheckDate() {
1525         try {
1526                 var form = document.forms["filter_add_form"];
1527
1528                 if (!form) {
1529                         form = document.forms["filter_edit_form"];
1530                 }
1531
1532                 if (!form) {
1533                         console.log("filterDlgCheckAction: can't find form!");
1534                         return;
1535                 }
1536
1537                 var reg_exp = form.reg_exp.value;
1538
1539                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
1540
1541                 new Ajax.Request("backend.php", {
1542                         parameters: query,
1543                         onComplete: function(transport) {
1544
1545                                 var form = document.forms["filter_add_form"];
1546
1547                                 if (!form) {
1548                                         form = document.forms["filter_edit_form"];
1549                                 }
1550
1551                                 if (transport.responseXML) {
1552                                         var result = transport.responseXML.getElementsByTagName("result")[0];
1553
1554                                         if (result && result.firstChild) {
1555                                                 if (result.firstChild.nodeValue == "1") {
1556
1557                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
1558
1559                                                         return;
1560                                                 }
1561                                         }
1562                                 }
1563
1564                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
1565
1566                         } });
1567
1568
1569         } catch (e) {
1570                 exception_error("filterDlgCheckDate", e);
1571         }
1572 }
1573
1574 function explainError(code) {
1575         return displayDlg("explainError", code);
1576 }
1577
1578 // this only searches loaded headlines list, not in CDM
1579 function getRelativePostIds(id, limit) {
1580
1581         if (!limit) limit = 3;
1582
1583         console.log("getRelativePostIds: " + id + " limit=" + limit);
1584
1585         var ids = new Array();
1586         var container = $("headlinesList");
1587
1588         if (container) {
1589                 var rows = container.rows;
1590
1591                 for (var i = 0; i < rows.length; i++) {
1592                         var r_id = rows[i].id.replace("RROW-", "");
1593
1594                         if (r_id == id) {
1595                                 for (var k = 1; k <= limit; k++) {
1596                                         var nid = false;
1597
1598                                         if (i > k-1) var nid = rows[i-k].id.replace("RROW-", "");
1599                                         if (nid) ids.push(nid);
1600
1601                                         if (i < rows.length-k) nid = rows[i+k].id.replace("RROW-", "");
1602                                         if (nid) ids.push(nid);
1603                                 }
1604
1605                                 return ids;
1606                         }
1607                 }
1608         }
1609
1610         return false;
1611 }
1612
1613 function openArticleInNewWindow(id) {
1614         try {
1615                 console.log("openArticleInNewWindow: " + id);
1616
1617                 var query = "?op=rpc&subop=getArticleLink&id=" + id;
1618                 var wname = "ttrss_article_" + id;
1619
1620                 console.log(query + " " + wname);
1621
1622                 var w = window.open("", wname);
1623
1624                 if (!w) notify_error("Failed to open window for the article");
1625
1626                 new Ajax.Request("backend.php", {
1627                         parameters: query,
1628                         onComplete: function(transport) {
1629
1630                                         var link = transport.responseXML.getElementsByTagName("link")[0];
1631                                         var id = transport.responseXML.getElementsByTagName("id")[0];
1632
1633                                         console.log("open_article received link: " + link);
1634
1635                                         if (link && id) {
1636
1637                                                 var wname = "ttrss_article_" + id.firstChild.nodeValue;
1638
1639                                                 console.log("link url: " + link.firstChild.nodeValue + ", wname " + wname);
1640
1641                                                 var w = window.open(link.firstChild.nodeValue, wname);
1642
1643                                                 if (!w) { notify_error("Failed to load article in new window"); }
1644
1645                                                 if (id) {
1646                                                         id = id.firstChild.nodeValue;
1647                                                         if (!$("headlinesList")) {
1648                                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
1649                                                         }
1650                                                 }
1651                                         } else {
1652                                                 notify_error("Can't open article: received invalid article link");
1653                                         }
1654                                 } });
1655
1656         } catch (e) {
1657                 exception_error("openArticleInNewWindow", e);
1658         }
1659 }
1660
1661 /* http://textsnippets.com/posts/show/835 */
1662
1663 Position.GetWindowSize = function(w) {
1664         w = w ? w : window;
1665         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1666         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1667         return [width, height]
1668 }
1669
1670 /* http://textsnippets.com/posts/show/836 */
1671
1672 Position.Center = function(element, parent) {
1673         var w, h, pw, ph;
1674         var d = Element.getDimensions(element);
1675         w = d.width;
1676         h = d.height;
1677         Position.prepare();
1678         if (!parent) {
1679                 var ws = Position.GetWindowSize();
1680                 pw = ws[0];
1681                 ph = ws[1];
1682         } else {
1683                 pw = parent.offsetWidth;
1684                 ph = parent.offsetHeight;
1685         }
1686         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1687         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1688 }
1689
1690
1691 function isCdmMode() {
1692         return !$("headlinesList");
1693 }
1694
1695 function getSelectedArticleIds2() {
1696         var rows = new Array();
1697         var cdm_mode = isCdmMode();
1698
1699         if (cdm_mode) {
1700                 rows = cdmGetSelectedArticles();
1701         } else {
1702                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1703         }
1704
1705         var ids = new Array();
1706
1707         for (var i = 0; i < rows.length; i++) {
1708                 var chk = $("RCHK-" + rows[i]);
1709                 if (chk && chk.checked) {
1710                         ids.push(rows[i]);
1711                 }
1712         }
1713
1714         return ids;
1715 }
1716
1717 function displayHelpInfobox(topic_id) {
1718
1719         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1720
1721         var w = window.open(url, "ttrss_help",
1722                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1723
1724 }
1725
1726 function focus_element(id) {
1727         try {
1728                 var e = $(id);
1729                 if (e) e.focus();
1730         } catch (e) {
1731                 exception_error("focus_element", e);
1732         }
1733         return false;
1734 }
1735
1736 function loading_set_progress(p) {
1737         try {
1738                 if (p < last_progress_point || !Element.visible("overlay")) return;
1739
1740                 console.log("<b>loading_set_progress : " + p + " (" + last_progress_point + ")</b>");
1741
1742                 var o = $("l_progress_i");
1743
1744 //              o.style.width = (p * 2) + "px";
1745
1746                 new Effect.Scale(o, p, {
1747                         scaleY : false,
1748                         scaleFrom : last_progress_point,
1749                         scaleMode: { originalWidth : 200 },
1750                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
1751
1752                 last_progress_point = p;
1753
1754         } catch (e) {
1755                 exception_error("loading_set_progress", e);
1756         }
1757 }
1758
1759 function remove_splash() {
1760         if (Element.visible("overlay")) {
1761                 console.log("about to remove splash, OMG!");
1762                 Element.hide("overlay");
1763                 console.log("removed splash!");
1764         }
1765 }
1766
1767 function getSelectedFeedsFromBrowser() {
1768
1769         var list = $("browseFeedList");
1770
1771         var selected = new Array();
1772
1773         for (i = 0; i < list.childNodes.length; i++) {
1774                 var child = list.childNodes[i];
1775                 if (child.id && child.id.match("FBROW-")) {
1776                         var id = child.id.replace("FBROW-", "");
1777
1778                         var cb = $("FBCHK-" + id);
1779
1780                         if (cb.checked) {
1781                                 selected.push(id);
1782                         }
1783                 }
1784         }
1785
1786         return selected;
1787 }
1788
1789 function updateFeedBrowser() {
1790         try {
1791
1792                 var query = Form.serialize("feed_browser");
1793
1794                 Element.show('feed_browser_spinner');
1795
1796                 new Ajax.Request("backend.php", {
1797                         parameters: query,
1798                         onComplete: function(transport) {
1799                                 notify('');
1800
1801                                 Element.hide('feed_browser_spinner');
1802
1803                                 var c = $("browseFeedList");
1804                                 var r = transport.responseXML.getElementsByTagName("content")[0];
1805                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
1806                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
1807
1808                                 if (c && r) {
1809                                         c.innerHTML = r.firstChild.nodeValue;
1810                                 }
1811
1812                                 if (parseInt(mode.getAttribute("value")) == 2) {
1813                                         Element.show('feed_archive_remove');
1814                                 } else {
1815                                         Element.hide('feed_archive_remove');
1816                                 }
1817
1818                         } });
1819
1820         } catch (e) {
1821                 exception_error("updateFeedBrowser", e);
1822         }
1823
1824 }
1825
1826 function transport_error_check(transport) {
1827         try {
1828                 if (transport.responseXML) {
1829                         var error = transport.responseXML.getElementsByTagName("error")[0];
1830
1831                         if (error) {
1832                                 var code = error.getAttribute("error-code");
1833                                 var msg = error.getAttribute("error-msg");
1834                                 if (code != 0) {
1835                                         fatalError(code, msg);
1836                                         return false;
1837                                 }
1838                         }
1839                 }
1840         } catch (e) {
1841                 exception_error("check_for_error_xml", e);
1842         }
1843         return true;
1844 }
1845
1846 function strip_tags(s) {
1847         return s.replace(/<\/?[^>]+(>|$)/g, "");
1848 }
1849
1850 function truncate_string(s, length) {
1851         if (!length) length = 30;
1852         var tmp = s.substring(0, length);
1853         if (s.length > length) tmp += "&hellip;";
1854         return tmp;
1855 }
1856
1857 function hotkey_prefix_timeout() {
1858         try {
1859
1860                 var date = new Date();
1861                 var ts = Math.round(date.getTime() / 1000);
1862
1863                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
1864                         console.log("hotkey_prefix seems to be stuck, aborting");
1865                         hotkey_prefix_pressed = false;
1866                         hotkey_prefix = false;
1867                         Element.hide('cmdline');
1868                 }
1869
1870                 setTimeout("hotkey_prefix_timeout()", 1000);
1871
1872         } catch  (e) {
1873                 exception_error("hotkey_prefix_timeout", e);
1874         }
1875 }
1876
1877 function hideAuxDlg() {
1878         try {
1879                 Element.hide('auxDlg');
1880         } catch (e) {
1881                 exception_error("hideAuxDlg", e);
1882         }
1883 }
1884
1885 function displayNewContentPrompt(id) {
1886         try {
1887
1888                 var msg = "<a href='#' onclick='viewfeed("+id+")'>" +
1889                         __("New articles available in this feed (click to show)") + "</a>";
1890
1891                 msg = msg.replace("%s", getFeedName(id));
1892
1893                 $('auxDlg').innerHTML = msg;
1894
1895                 Element.show('auxDlg');
1896
1897         } catch (e) {
1898                 exception_error("displayNewContentPrompt", e);
1899         }
1900 }
1901
1902 function feedBrowserSubscribe() {
1903         try {
1904
1905                 var selected = getSelectedFeedsFromBrowser();
1906
1907                 var mode = document.forms['feed_browser'].mode;
1908
1909                 mode = mode[mode.selectedIndex].value;
1910
1911                 if (selected.length > 0) {
1912                         closeInfoBox();
1913
1914                         notify_progress("Loading, please wait...", true);
1915
1916                         var query = "?op=rpc&subop=massSubscribe&ids="+
1917                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1918
1919                         new Ajax.Request("backend.php", {
1920                                 parameters: query,
1921                                 onComplete: function(transport) {
1922
1923                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1924                                         var nf_value = nf.getAttribute("value");
1925
1926                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1927
1928                                         if (inPreferences()) {
1929                                                 updateFeedList();
1930                                         } else {
1931                                                 setTimeout('updateFeedList(false, false)', 50);
1932                                         }
1933                                 } });
1934
1935                 } else {
1936                         alert(__("No feeds are selected."));
1937                 }
1938
1939         } catch (e) {
1940                 exception_error("feedBrowserSubscribe", e);
1941         }
1942 }
1943
1944 function feedArchiveRemove() {
1945         try {
1946
1947                 var selected = getSelectedFeedsFromBrowser();
1948
1949                 if (selected.length > 0) {
1950
1951                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1952
1953                         if (confirm(pr)) {
1954                                 Element.show('feed_browser_spinner');
1955
1956                                 var query = "?op=rpc&subop=remarchived&ids=" +
1957                                         param_escape(selected.toString());;
1958
1959                                 new Ajax.Request("backend.php", {
1960                                         parameters: query,
1961                                         onComplete: function(transport) {
1962                                                 updateFeedBrowser();
1963                                         } });
1964                         }
1965
1966                 } else {
1967                         alert(__("No feeds are selected."));
1968                 }
1969
1970         } catch (e) {
1971                 exception_error("feedArchiveRemove", e);
1972         }
1973 }
1974
1975 function uploadIconHandler(rc) {
1976         try {
1977                 switch (rc) {
1978                         case 0:
1979                                 notify_info("Upload complete.");
1980                                 if (inPreferences()) {
1981                                         updateFeedList();
1982                                 } else {
1983                                         setTimeout('updateFeedList(false, false)', 50);
1984                                 }
1985                                 break;
1986                         case 1:
1987                                 notify_error("Upload failed: icon is too big.");
1988                                 break;
1989                         case 2:
1990                                 notify_error("Upload failed.");
1991                                 break;
1992                 }
1993
1994         } catch (e) {
1995                 exception_error("uploadIconHandler", e);
1996         }
1997 }
1998
1999 function removeFeedIcon(id) {
2000
2001         try {
2002
2003                 if (confirm(__("Remove stored feed icon?"))) {
2004                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
2005
2006                         console.log(query);
2007
2008                         notify_progress("Removing feed icon...", true);
2009
2010                         new Ajax.Request("backend.php", {
2011                                 parameters: query,
2012                                 onComplete: function(transport) {
2013                                         notify_info("Feed icon removed.");
2014                                         if (inPreferences()) {
2015                                                 updateFeedList();
2016                                         } else {
2017                                                 setTimeout('updateFeedList(false, false)', 50);
2018                                         }
2019                                 } });
2020                 }
2021
2022                 return false;
2023         } catch (e) {
2024                 exception_error("uploadFeedIcon", e);
2025         }
2026 }
2027
2028 function uploadFeedIcon() {
2029
2030         try {
2031
2032                 var file = $("icon_file");
2033
2034                 if (file.value.length == 0) {
2035                         alert(__("Please select an image file to upload."));
2036                 } else {
2037                         if (confirm(__("Upload new icon for this feed?"))) {
2038                                 notify_progress("Uploading, please wait...", true);
2039                                 return true;
2040                         }
2041                 }
2042
2043                 return false;
2044
2045         } catch (e) {
2046                 exception_error("uploadFeedIcon", e);
2047         }
2048 }
2049
2050 function addLabel() {
2051
2052         try {
2053
2054                 var caption = prompt(__("Please enter label caption:"), "");
2055
2056                 if (caption != undefined) {
2057
2058                         if (caption == "") {
2059                                 alert(__("Can't create label: missing caption."));
2060                                 return false;
2061                         }
2062
2063                         var query = "?op=pref-labels&subop=add&caption=" +
2064                                 param_escape(caption);
2065
2066                         notify_progress("Loading, please wait...", true);
2067
2068                         if (inPreferences()) active_tab = "labelConfig";
2069
2070                         new Ajax.Request("backend.php", {
2071                                 parameters: query,
2072                                 onComplete: function(transport) {
2073                                         if (inPreferences()) {
2074                                                 infobox_submit_callback2(transport);
2075                                         } else {
2076                                                 updateFeedList();
2077                                         }
2078                         } });
2079
2080                 }
2081
2082         } catch (e) {
2083                 exception_error("addLabel", e);
2084         }
2085 }
2086
2087 function quickAddFeed() {
2088         displayDlg('quickAddFeed', '',
2089            function () {$('feed_url').focus();});
2090 }
2091
2092 function quickAddFilter() {
2093         displayDlg('quickAddFilter', '',
2094            function () {document.forms['filter_add_form'].reg_exp.focus();});
2095 }
2096
2097 function unsubscribeFeed(feed_id, title) {
2098
2099         var msg = __("Unsubscribe from %s?").replace("%s", title);
2100
2101         if (title == undefined || confirm(msg)) {
2102                 notify_progress("Removing feed...");
2103
2104                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
2105
2106                 new Ajax.Request("backend.php", {
2107                         parameters: query,
2108                         onComplete: function(transport) {
2109
2110                                         closeInfoBox();
2111
2112                                         if (inPreferences()) {
2113                                                 updateFeedList();
2114                                         } else {
2115                                                 dlg_frefresh_callback(transport, feed_id);
2116                                         }
2117
2118                                 } });
2119         }
2120
2121         return false;
2122 }
2123
2124
2125 function backend_sanity_check_callback(transport) {
2126
2127         try {
2128
2129                 if (sanity_check_done) {
2130                         fatalError(11, "Sanity check request received twice. This can indicate "+
2131                       "presence of Firebug or some other disrupting extension. "+
2132                                 "Please disable it and try again.");
2133                         return;
2134                 }
2135
2136                 if (!transport.responseXML) {
2137                         if (!store) {
2138                                 fatalError(3, "Sanity check: Received reply is not XML",
2139                                         transport.responseText);
2140                                 return;
2141                         } else {
2142                                 init_offline();
2143                                 return;
2144                         }
2145                 }
2146
2147                 if (getURLParam("offline")) {
2148                         return init_offline();
2149                 }
2150
2151                 var reply = transport.responseXML.getElementsByTagName("error")[0];
2152
2153                 if (!reply) {
2154                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
2155                         return;
2156                 }
2157
2158                 var error_code = reply.getAttribute("error-code");
2159
2160                 if (error_code && error_code != 0) {
2161                         return fatalError(error_code, reply.getAttribute("error-msg"));
2162                 }
2163
2164                 console.log("sanity check ok");
2165
2166                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
2167
2168                 if (params) {
2169                         console.log('reading init-params...');
2170                         //var param = params.firstChild;
2171
2172                         params = JSON.parse(params.firstChild.nodeValue);
2173
2174                         if (params) {
2175                                 for (var i = 0; i < params.length; i++) {
2176
2177                                         var k = params[i].param;
2178                                         var v = params[i].value;
2179
2180                                         console.log(k + " => " + v);
2181                                         init_params[k] = v;
2182
2183                                         if (db) {
2184                                                 db.execute("DELETE FROM init_params WHERE key = ?", [k]);
2185                                                 db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
2186                                                         [k, v]);
2187                                         }
2188                                 }
2189                         }
2190                 }
2191
2192                 sanity_check_done = true;
2193
2194                 init_second_stage();
2195
2196         } catch (e) {
2197                 exception_error("backend_sanity_check_callback", e, transport);
2198         }
2199 }
2200
2201