functions.js

   1 var hotkeys_enabled = true;
   2
   3 var xmlhttp_rpc = Ajax.getTransport();
   4
   5 function browser_has_opacity() {
   6         return navigator.userAgent.match("Gecko") != null ||
   7                 navigator.userAgent.match("Opera") != null;
   8 }
   9
  10 function exception_error(location, e, silent) {
  11         var msg;
  12
  13         if (e.fileName) {
  14                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  15
  16                 msg = "Exception: " + e.name + ", " + e.message +
  17                         "\nFunction: " + location + "()" +
  18                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  19
  20         } else {
  21                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  22         }
  23
  24         debug("<b>EXCEPTION: " + msg + "</b>");
  25
  26         if (!silent) {
  27                 alert(msg);
  28         }
  29 }
  30
  31 function disableHotkeys() {
  32         hotkeys_enabled = false;
  33 }
  34
  35 function enableHotkeys() {
  36         hotkeys_enabled = true;
  37 }
  38
  39 function xmlhttp_ready(obj) {
  40         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  41 }
  42
  43 function notify_callback() {
  44         var container = document.getElementById('notify');
  45         if (xmlhttp.readyState == 4) {
  46                 container.innerHTML=xmlhttp.responseText;
  47         }
  48 }
  49
  50 function rpc_notify_callback() {
  51         var container = document.getElementById('notify');
  52         if (xmlhttp_rpc.readyState == 4) {
  53                 container.innerHTML=xmlhttp_rpc.responseText;
  54         }
  55 }
  56
  57 function param_escape(arg) {
  58         if (typeof encodeURIComponent != 'undefined')
  59                 return encodeURIComponent(arg);
  60         else
  61                 return escape(arg);
  62 }
  63
  64 function param_unescape(arg) {
  65         if (typeof decodeURIComponent != 'undefined')
  66                 return decodeURIComponent(arg);
  67         else
  68                 return unescape(arg);
  69 }
  70
  71 function delay(gap) {
  72         var then,now;
  73         then=new Date().getTime();
  74         now=then;
  75         while((now-then)<gap) {
  76                 now=new Date().getTime();
  77         }
  78 }
  79
  80 var notify_hide_timerid = false;
  81 var notify_last_doc = false;
  82
  83 var notify_effect = false;
  84
  85 function hide_notify() {
  86         if (notify_last_doc) {
  87                 var n = notify_last_doc.getElementById("notify");
  88                 if (browser_has_opacity()) {
  89                         if (notify_opacity >= 0) {
  90                                 notify_opacity = notify_opacity - 0.1;
  91                                 n.style.opacity = notify_opacity;
  92                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  93                         } else {
  94                                 n.style.display = "none";
  95                                 n.style.opacity = 1;
  96                         }
  97                 } else {
  98                         n.style.display = "none";
  99                 }
 100         }
 101 }
 102
 103 function notify_real(msg, doc, no_hide, is_err) {
 104
 105         var n = doc.getElementById("notify");
 106         var nb = doc.getElementById("notify_body");
 107
 108         if (!n || !nb) return;
 109
 110         if (notify_hide_timerid) {
 111                 window.clearTimeout(notify_hide_timerid);
 112         }
 113
 114         notify_last_doc = doc;
 115         notify_opacity = 1;
 116
 117         if (msg == "") {
 118                 if (n.style.display == "block") {
 119                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 120                 }
 121                 return;
 122         } else {
 123                 n.style.display = "block";
 124         }
 125
 126         if (is_err) {
 127                 n.style.backgroundColor = "#ffcccc";
 128                 n.style.color = "black";
 129                 n.style.borderColor = "#ff0000";
 130         } else {
 131                 n.style.backgroundColor = "#fff7d5";
 132                 n.style.borderColor = "#d7c47a";
 133                 n.style.color = "black";
 134         }
 135
 136         nb.innerHTML = msg;
 137
 138         if (!no_hide) {
 139                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 140         }
 141 }
 142
 143 function p_notify(msg, no_hide, is_err) {
 144         notify_real(msg, parent.document, no_hide, is_err);
 145 }
 146
 147 function notify(msg, no_hide, is_err) {
 148         notify_real(msg, document, no_hide, is_err);
 149 }
 150
 151 function printLockingError() {
 152         notify("Please wait until operation finishes");}
 153
 154 var seq = "";
 155
 156 function hotkey_handler(e) {
 157
 158         try {
 159
 160                 var keycode;
 161
 162                 if (!hotkeys_enabled) return;
 163
 164                 if (window.event) {
 165                         keycode = window.event.keyCode;
 166                 } else if (e) {
 167                         keycode = e.which;
 168                 }
 169
 170                 if (keycode == 13 || keycode == 27) {
 171                         seq = "";
 172                 } else {
 173                         seq = seq + "" + keycode;
 174                 }
 175
 176                 var m_ctx = getMainContext();
 177                 var f_ctx = getFeedsContext();
 178                 var h_ctx = getHeadlinesContext();
 179
 180                 if (keycode == 82) { // r
 181                         return m_ctx.scheduleFeedUpdate(true);
 182                 }
 183
 184                 if (keycode == 83) { // r
 185                         return m_ctx.displayDlg("search", getActiveFeedId());
 186                 }
 187
 188                 if (keycode == 85) { // u
 189                         if (getActiveFeedId()) {
 190                                 return f_ctx.viewfeed(getActiveFeedId(), 0, "ForceUpdate");
 191                         }
 192                 }
 193
 194                 if (keycode == 65) { // a
 195                         return m_ctx.toggleDispRead();
 196                 }
 197
 198                 var f_doc = m_ctx.frames["feeds-frame"].document;
 199                 var feedlist = f_doc.getElementById('feedList');
 200
 201                 if (keycode == 74) { // j
 202                         var feed = getActiveFeedId();
 203                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 204                         if (new_feed) viewfeed(new_feed, 0, '');
 205                 }
 206
 207                 if (keycode == 75) { // k
 208                         var feed = getActiveFeedId();
 209                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 210                         if (new_feed) viewfeed(new_feed, 0, '');
 211                 }
 212
 213                 if (keycode == 78 || keycode == 40) { // n, down
 214                         return h_ctx.moveToPost('next');
 215                 }
 216
 217                 if (keycode == 80 || keycode == 38) { // p, up
 218                         return h_ctx.moveToPost('prev');
 219                 }
 220
 221                 if (document.getElementById("piggie")) {
 222
 223                         if (seq.match("807371717369")) {
 224                                 seq = "";
 225                                 localPiggieFunction(true);
 226                         } else {
 227                                 localPiggieFunction(false);
 228                         }
 229                 }
 230
 231                 if (typeof localHotkeyHandler != 'undefined') {
 232                         try {
 233                                 localHotkeyHandler(keycode);
 234                         } catch (e) {
 235                                 exception_error("hotkey_handler, local:", e);
 236                         }
 237                 }
 238         } catch (e) {
 239                 exception_error("hotkey_handler", e);
 240         }
 241 }
 242
 243 function cleanSelectedList(element) {
 244         var content = document.getElementById(element);
 245
 246         if (!document.getElementById("feedCatHolder")) {
 247                 for (i = 0; i < content.childNodes.length; i++) {
 248                         var child = content.childNodes[i];
 249                         try {
 250                                 child.className = child.className.replace("Selected", "");
 251                         } catch (e) {
 252                                 //
 253                         }
 254                 }
 255         } else {
 256                 for (i = 0; i < content.childNodes.length; i++) {
 257                         var child = content.childNodes[i];
 258                         if (child.id == "feedCatHolder") {
 259                                 parent.debug(child.id);
 260                                 var fcat = child.lastChild;
 261                                 for (j = 0; j < fcat.childNodes.length; j++) {
 262                                         var feed = fcat.childNodes[j];
 263                                         feed.className = feed.className.replace("Selected", "");
 264                                 }
 265                         }
 266                 }
 267         }
 268 }
 269
 270
 271 function cleanSelected(element) {
 272         var content = document.getElementById(element);
 273
 274         for (i = 0; i < content.rows.length; i++) {
 275                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 276         }
 277 }
 278
 279 function getVisibleUnreadHeadlines() {
 280         var content = document.getElementById("headlinesList");
 281
 282         var rows = new Array();
 283
 284         for (i = 0; i < content.rows.length; i++) {
 285                 var row_id = content.rows[i].id.replace("RROW-", "");
 286                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 287                                 rows.push(row_id);
 288                 }
 289         }
 290         return rows;
 291 }
 292
 293 function getVisibleHeadlineIds() {
 294
 295         var content = document.getElementById("headlinesList");
 296
 297         var rows = new Array();
 298
 299         for (i = 0; i < content.rows.length; i++) {
 300                 var row_id = content.rows[i].id.replace("RROW-", "");
 301                 if (row_id.length > 0) {
 302                                 rows.push(row_id);
 303                 }
 304         }
 305         return rows;
 306 }
 307
 308 function getFirstVisibleHeadlineId() {
 309         var rows = getVisibleHeadlineIds();
 310         return rows[0];
 311 }
 312
 313 function getLastVisibleHeadlineId() {
 314         var rows = getVisibleHeadlineIds();
 315         return rows[rows.length-1];
 316 }
 317
 318 function markHeadline(id) {
 319         var row = document.getElementById("RROW-" + id);
 320         if (row) {
 321                 var is_active = false;
 322
 323                 if (row.className.match("Active")) {
 324                         is_active = true;
 325                 }
 326                 row.className = row.className.replace("Selected", "");
 327                 row.className = row.className.replace("Active", "");
 328                 row.className = row.className.replace("Insensitive", "");
 329
 330                 if (is_active) {
 331                         row.className = row.className = "Active";
 332                 }
 333
 334                 var check = document.getElementById("RCHK-" + id);
 335
 336                 if (check) {
 337                         check.checked = true;
 338                 }
 339
 340                 row.className = row.className + "Selected";
 341
 342         }
 343 }
 344
 345 function getFeedIds() {
 346         var content = document.getElementById("feedsList");
 347
 348         var rows = new Array();
 349
 350         for (i = 0; i < content.rows.length; i++) {
 351                 var id = content.rows[i].id.replace("FEEDR-", "");
 352                 if (id.length > 0) {
 353                         rows.push(id);
 354                 }
 355         }
 356
 357         return rows;
 358 }
 359
 360 function setCookie(name, value, lifetime, path, domain, secure) {
 361
 362         var d = false;
 363
 364         if (lifetime) {
 365                 d = new Date();
 366                 d.setTime(lifetime * 1000);
 367         }
 368
 369         int_setCookie(name, value, d, path, domain, secure);
 370
 371 }
 372
 373 function int_setCookie(name, value, expires, path, domain, secure) {
 374         document.cookie= name + "=" + escape(value) +
 375                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 376                 ((path) ? "; path=" + path : "") +
 377                 ((domain) ? "; domain=" + domain : "") +
 378                 ((secure) ? "; secure" : "");
 379 }
 380
 381 function delCookie(name, path, domain) {
 382         if (getCookie(name)) {
 383                 document.cookie = name + "=" +
 384                 ((path) ? ";path=" + path : "") +
 385                 ((domain) ? ";domain=" + domain : "" ) +
 386                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 387         }
 388 }
 389
 390
 391 function getCookie(name) {
 392
 393         var dc = document.cookie;
 394         var prefix = name + "=";
 395         var begin = dc.indexOf("; " + prefix);
 396         if (begin == -1) {
 397             begin = dc.indexOf(prefix);
 398             if (begin != 0) return null;
 399         }
 400         else {
 401             begin += 2;
 402         }
 403         var end = document.cookie.indexOf(";", begin);
 404         if (end == -1) {
 405             end = dc.length;
 406         }
 407         return unescape(dc.substring(begin + prefix.length, end));
 408 }
 409
 410 function disableContainerChildren(id, disable, doc) {
 411
 412         if (!doc) doc = document;
 413
 414         var container = doc.getElementById(id);
 415
 416         if (!container) {
 417                 //alert("disableContainerChildren: element " + id + " not found");
 418                 return;
 419         }
 420
 421         for (var i = 0; i < container.childNodes.length; i++) {
 422                 var child = container.childNodes[i];
 423
 424                 try {
 425                         child.disabled = disable;
 426                 } catch (E) {
 427
 428                 }
 429
 430                 if (disable) {
 431                         if (child.className && child.className.match("button")) {
 432                                 child.className = "disabledButton";
 433                         }
 434                 } else {
 435                         if (child.className && child.className.match("disabledButton")) {
 436                                 child.className = "button";
 437                         }
 438                 }
 439         }
 440
 441 }
 442
 443 function gotoPreferences() {
 444         document.location.href = "prefs.php";
 445 }
 446
 447 function gotoMain() {
 448         document.location.href = "tt-rss.php";
 449 }
 450
 451 function gotoExportOpml() {
 452         document.location.href = "opml.php?op=Export";
 453 }
 454
 455 function getActiveFeedId() {
 456 //      return getCookie("ttrss_vf_actfeed");
 457         try {
 458                 debug("gAFID: " + getMainContext().active_feed_id);
 459                 return getMainContext().active_feed_id;
 460         } catch (e) {
 461                 exception_error("getActiveFeedId", e);
 462         }
 463 }
 464
 465 function setActiveFeedId(id) {
 466 //      return setCookie("ttrss_vf_actfeed", id);
 467         try {
 468                 getMainContext().active_feed_id = id;
 469         } catch (e) {
 470                 exception_error("setActiveFeedId", e);
 471         }
 472 }
 473
 474 function parse_counters(reply, scheduled_call) {
 475         try {
 476                 var f_document = getFeedsContext().document;
 477                 var title_obj = getMainContext();
 478
 479                 if (reply.firstChild && reply.firstChild.firstChild) {
 480                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 481                         reply = reply.firstChild;
 482                 }
 483
 484                 debug("F_DOC: " + f_document + ", T_OBJ: " + title_obj);
 485
 486                 for (var l = 0; l < reply.childNodes.length; l++) {
 487                         if (!reply.childNodes[l] ||
 488                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 489                                 // where did this come from?
 490                                 continue;
 491                         }
 492
 493                         var id = reply.childNodes[l].getAttribute("id");
 494                         var t = reply.childNodes[l].getAttribute("type");
 495                         var ctr = reply.childNodes[l].getAttribute("counter");
 496                         var error = reply.childNodes[l].getAttribute("error");
 497                         var has_img = reply.childNodes[l].getAttribute("hi");
 498                         var updated = reply.childNodes[l].getAttribute("updated");
 499
 500                         if (id == "global-unread") {
 501                                 title_obj.global_unread = ctr;
 502                                 title_obj.updateTitle();
 503                                 continue;
 504                         }
 505
 506                         if (t == "category") {
 507                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 508                                 if (catctr) {
 509                                         catctr.innerHTML = "(" + ctr + " unread)";
 510                                 }
 511                                 continue;
 512                         }
 513
 514                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 515                         var feedu = f_document.getElementById("FEEDU-" + id);
 516                         var feedr = f_document.getElementById("FEEDR-" + id);
 517                         var feed_img = f_document.getElementById("FIMG-" + id);
 518                         var feedlink = f_document.getElementById("FEEDL-" + id);
 519                         var feedupd = f_document.getElementById("FLUPD-" + id);
 520
 521                         if (updated && feedlink) {
 522                                 if (error) {
 523                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 524                                 } else {
 525                                         feedlink.title = "Updated: " + updated;
 526                                 }
 527                         }
 528
 529                         if (updated && feedupd) {
 530                                 if (error) {
 531                                         feedupd.innerHTML = updated + " (Error)";
 532                                 } else {
 533                                         feedupd.innerHTML = updated;
 534                                 }
 535                         }
 536
 537                         if (feedctr && feedu && feedr) {
 538
 539                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 540                                         var hf = title_obj.parent.frames["headlines-frame"];
 541                                         hf.location.reload(true);
 542                                 }
 543
 544                                 feedu.innerHTML = ctr;
 545
 546                                 if (error) {
 547                                         feedr.className = feedr.className.replace("feed", "error");
 548                                 } else if (id > 0) {
 549                                         feedr.className = feedr.className.replace("error", "feed");
 550                                 }
 551
 552                                 if (ctr > 0) {
 553                                         feedctr.className = "odd";
 554                                         if (!feedr.className.match("Unread")) {
 555                                                 var is_selected = feedr.className.match("Selected");
 556
 557                                                 feedr.className = feedr.className.replace("Selected", "");
 558                                                 feedr.className = feedr.className.replace("Unread", "");
 559
 560                                                 feedr.className = feedr.className + "Unread";
 561
 562                                                 if (is_selected) {
 563                                                         feedr.className = feedr.className + "Selected";
 564                                                 }
 565
 566                                         }
 567                                 } else {
 568                                         feedctr.className = "invisible";
 569                                         feedr.className = feedr.className.replace("Unread", "");
 570                                 }
 571                         }
 572                 }
 573         } catch (e) {
 574                 exception_error("parse_counters", e);
 575         }
 576 }
 577
 578 function all_counters_callback() {
 579         if (xmlhttp_rpc.readyState == 4) {
 580                 try {
 581                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 582                                 debug("[all_counters_callback] backend did not return valid XML");
 583                                 return;
 584                         }
 585
 586                         debug("in all_counters_callback");
 587
 588                         var reply = xmlhttp_rpc.responseXML.firstChild;
 589
 590                         var counters = reply.firstChild;
 591
 592                         parse_counters(counters);
 593
 594                         var runtime = counters.nextSibling;
 595
 596                         if (runtime) {
 597                                 getMainContext().parse_runtime_info(runtime);
 598                         }
 599
 600                         if (getInitParam("feeds_sort_by_unread") == 1) {
 601                                 resort_feedlist();
 602                         }
 603
 604                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 605
 606                 } catch (e) {
 607                         exception_error("all_counters_callback", e);
 608                 }
 609         }
 610 }
 611
 612 function get_feed_entry_unread(doc, elem) {
 613
 614         var id = elem.id.replace("FEEDR-", "");
 615
 616         if (id <= 0) {
 617                 return -1;
 618         }
 619
 620         try {
 621                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 622         } catch (e) {
 623                 return -1;
 624         }
 625 }
 626
 627 function resort_category(doc, node) {
 628         debug("resort_category: " + node);
 629
 630         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 631                 for (i = 0; i < node.childNodes.length; i++) {
 632                         if (node.childNodes[i].nodeName != "LI") { continue; }
 633
 634                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 635                                 continue;
 636                         }
 637
 638                         for (j = i+1; j < node.childNodes.length; j++) {
 639                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 640
 641                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 642                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 643
 644                                 if (cur_val > tmp_val) {
 645                                         tempnode_i = node.childNodes[i].cloneNode(true);
 646                                         tempnode_j = node.childNodes[j].cloneNode(true);
 647                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 648                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 649                                 }
 650                         }
 651
 652                 }
 653         }
 654
 655 }
 656
 657 function resort_feedlist() {
 658         debug("resort_feedlist");
 659
 660         var fd = getFeedsContext().document;
 661
 662         if (fd.getElementById("feedCatHolder")) {
 663
 664                 var feeds = fd.getElementById("feedList");
 665                 var child = feeds.firstChild;
 666
 667                 while (child) {
 668
 669                         if (child.id == "feedCatHolder") {
 670                                 resort_category(fd, child.firstChild);
 671                         }
 672
 673                         child = child.nextSibling;
 674                 }
 675
 676         } else {
 677                 resort_category(fd, fd.getElementById("feedList"));
 678         }
 679 }
 680
 681 function update_all_counters(feed) {
 682         if (xmlhttp_ready(xmlhttp_rpc)) {
 683                 var query = "backend.php?op=rpc&subop=getAllCounters";
 684
 685                 if (feed > 0) {
 686                         query = query + "&aid=" + feed;
 687                 }
 688
 689                 xmlhttp_rpc.open("GET", query, true);
 690                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 691                 xmlhttp_rpc.send(null);
 692         }
 693 }
 694
 695 function popupHelp(tid) {
 696         var w = window.open("backend.php?op=help&tid=" + tid,
 697                 "Popup Help",
 698                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 699 }
 700
 701 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 702   * * @author Sundar Dorai-Raj
 703   * * Email: sdoraira@vt.edu
 704   * * This program is free software; you can redistribute it and/or
 705   * * modify it under the terms of the GNU General Public License
 706   * * as published by the Free Software Foundation; either version 2
 707   * * of the License, or (at your option) any later version,
 708   * * provided that any use properly credits the author.
 709   * * This program is distributed in the hope that it will be useful,
 710   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 711   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 712   * * GNU General Public License for more details at http://www.gnu.org * * */
 713
 714   var numbers=".0123456789";
 715   function isNumeric(x) {
 716     // is x a String or a character?
 717     if(x.length>1) {
 718       // remove negative sign
 719       x=Math.abs(x)+"";
 720       for(j=0;j<x.length;j++) {
 721         // call isNumeric recursively for each character
 722         number=isNumeric(x.substring(j,j+1));
 723         if(!number) return number;
 724       }
 725       return number;
 726     }
 727     else {
 728       // if x is number return true
 729       if(numbers.indexOf(x)>=0) return true;
 730       return false;
 731     }
 732   }
 733
 734
 735 function hideOrShowFeeds(doc, hide) {
 736
 737         var fd = getFeedsContext().document;
 738
 739         var list = fd.getElementById("feedList");
 740
 741         if (fd.getElementById("feedCatHolder")) {
 742
 743                 var feeds = fd.getElementById("feedList");
 744                 var child = feeds.firstChild;
 745
 746                 while (child) {
 747
 748                         if (child.id == "feedCatHolder") {
 749                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 750                         }
 751
 752                         child = child.nextSibling;
 753                 }
 754
 755         } else {
 756                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 757         }
 758 }
 759
 760 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 761
 762 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 763
 764         var cat_unread = 0;
 765
 766         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 767                 for (i = 0; i < node.childNodes.length; i++) {
 768                         if (node.childNodes[i].nodeName != "LI") { continue; }
 769
 770                         var has_unread = (node.childNodes[i].className != "feed");
 771
 772 //                      debug(node.childNodes[i].id + " --> " + has_unread);
 773
 774                         if (hide && !has_unread) {
 775                                 node.childNodes[i].style.display = "none";
 776                         }
 777
 778                         if (!hide) {
 779                                 node.childNodes[i].style.display = "list-item";
 780                         }
 781
 782                         if (has_unread) {
 783                                 cat_unread++;
 784                         }
 785
 786                 }
 787         }
 788
 789         if (cat_unread == 0) {
 790                 if (hide) {
 791                         cat_node.style.display = "none";
 792                 } else {
 793                         cat_node.style.display = "list-item";
 794                 }
 795         }
 796
 797 //      debug("unread for category: " + cat_unread);
 798 }
 799
 800 function selectTableRow(r, do_select) {
 801         r.className = r.className.replace("Selected", "");
 802
 803         if (do_select) {
 804                 r.className = r.className + "Selected";
 805         }
 806 }
 807
 808 function selectTableRowById(elem_id, check_id, do_select) {
 809
 810         try {
 811
 812                 var row = document.getElementById(elem_id);
 813
 814                 if (row) {
 815                         selectTableRow(row, do_select);
 816                 }
 817
 818                 var check = document.getElementById(check_id);
 819
 820                 if (check) {
 821                         check.checked = do_select;
 822                 }
 823         } catch (e) {
 824                 exception_error("selectTableRowById", e);
 825         }
 826 }
 827
 828 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 829         classcheck, reset_others) {
 830
 831         var content = document.getElementById(content_id);
 832
 833         if (!content) {
 834                 alert("[selectTableRows] Element " + content_id + " not found.");
 835                 return;
 836         }
 837
 838         for (i = 0; i < content.rows.length; i++) {
 839                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 840
 841                         if (content.rows[i].id.match(prefix)) {
 842                                 selectTableRow(content.rows[i], do_select);
 843
 844                                 var row_id = content.rows[i].id.replace(prefix, "");
 845                                 var check = document.getElementById(check_prefix + row_id);
 846
 847                                 if (check) {
 848                                         check.checked = do_select;
 849                                 }
 850                         } else if (reset_others) {
 851                                 selectTableRow(content.rows[i], false);
 852
 853                                 var row_id = content.rows[i].id.replace(prefix, "");
 854                                 var check = document.getElementById(check_prefix + row_id);
 855
 856                                 if (check) {
 857                                         check.checked = false;
 858                                 }
 859
 860                         }
 861                 } else if (reset_others) {
 862                         selectTableRow(content.rows[i], false);
 863
 864                         var row_id = content.rows[i].id.replace(prefix, "");
 865                         var check = document.getElementById(check_prefix + row_id);
 866
 867                         if (check) {
 868                                 check.checked = false;
 869                         }
 870
 871                 }
 872         }
 873 }
 874
 875 function getSelectedTableRowIds(content_id, prefix) {
 876
 877         var content = document.getElementById(content_id);
 878
 879         if (!content) {
 880                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 881                 return;
 882         }
 883
 884         var sel_rows = new Array();
 885
 886         for (i = 0; i < content.rows.length; i++) {
 887                 if (content.rows[i].id.match(prefix) &&
 888                                 content.rows[i].className.match("Selected")) {
 889
 890                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 891                         sel_rows.push(row_id);
 892                 }
 893         }
 894
 895         return sel_rows;
 896
 897 }
 898
 899 function toggleSelectRowById(sender, id) {
 900         var row = document.getElementById(id);
 901
 902         if (sender.checked) {
 903                 if (!row.className.match("Selected")) {
 904                         row.className = row.className + "Selected";
 905                 }
 906         } else {
 907                 if (row.className.match("Selected")) {
 908                         row.className = row.className.replace("Selected", "");
 909                 }
 910         }
 911 }
 912
 913 function toggleSelectListRow(sender) {
 914         var parent_row = sender.parentNode;
 915
 916         if (sender.checked) {
 917                 if (!parent_row.className.match("Selected")) {
 918                         parent_row.className = parent_row.className + "Selected";
 919                 }
 920         } else {
 921                 if (parent_row.className.match("Selected")) {
 922                         parent_row.className = parent_row.className.replace("Selected", "");
 923                 }
 924         }
 925 }
 926
 927
 928 function toggleSelectRow(sender) {
 929         var parent_row = sender.parentNode.parentNode;
 930
 931         if (sender.checked) {
 932                 if (!parent_row.className.match("Selected")) {
 933                         parent_row.className = parent_row.className + "Selected";
 934                 }
 935         } else {
 936                 if (parent_row.className.match("Selected")) {
 937                         parent_row.className = parent_row.className.replace("Selected", "");
 938                 }
 939         }
 940 }
 941
 942 function openExternalUrl(url) {
 943         var w = window.open(url);
 944 }
 945
 946 function getRelativeFeedId(list, id, direction, unread_only) {
 947         if (!id) {
 948                 if (direction == "next") {
 949                         for (i = 0; i < list.childNodes.length; i++) {
 950                                 var child = list.childNodes[i];
 951                                 if (child.id && child.id == "feedCatHolder") {
 952                                         if (child.lastChild) {
 953                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 954                                                 if (cr) return cr;
 955                                         }
 956                                 } else if (child.id && child.id.match("FEEDR-")) {
 957                                         return child.id.replace('FEEDR-', '');
 958                                 }
 959                         }
 960                 }
 961
 962                 // FIXME select last feed doesn't work when only unread feeds are visible
 963
 964                 if (direction == "prev") {
 965                         for (i = list.childNodes.length-1; i >= 0; i--) {
 966                                 var child = list.childNodes[i];
 967                                 if (child.id == "feedCatHolder") {
 968                                         if (child.firstChild) {
 969                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 970                                                 if (cr) return cr;
 971                                         }
 972                                 } else if (child.id.match("FEEDR-")) {
 973
 974                                         if (getInitParam("hide_read_feeds") == 1) {
 975                                                 if (child.className != "feed") {
 976                                                         alert(child.className);
 977                                                         return child.id.replace('FEEDR-', '');
 978                                                 }
 979                                         } else {
 980                                                         return child.id.replace('FEEDR-', '');
 981                                         }
 982                                 }
 983                         }
 984                 }
 985         } else {
 986
 987                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
 988
 989                 if (getInitParam("hide_read_feeds") == 1) {
 990                         unread_only = true;
 991                 }
 992
 993                 if (direction == "next") {
 994
 995                         var e = feed;
 996
 997                         while (e) {
 998
 999                                 if (e.nextSibling) {
1000
1001                                         e = e.nextSibling;
1002
1003                                 } else if (e.parentNode.parentNode.nextSibling) {
1004
1005                                         var this_cat = e.parentNode.parentNode;
1006
1007                                         e = false;
1008
1009                                         if (this_cat && this_cat.nextSibling) {
1010                                                 while (!e && this_cat.nextSibling) {
1011                                                         this_cat = this_cat.nextSibling;
1012                                                         if (this_cat.id == "feedCatHolder") {
1013                                                                 e = this_cat.firstChild.firstChild;
1014                                                         }
1015                                                 }
1016                                         }
1017
1018                                 } else {
1019                                         e = false;
1020                            }
1021
1022                                 if (e) {
1023                                         if (!unread_only || (unread_only && e.className != "feed" &&
1024                                                         e.className != "error"))        {
1025                                                 return e.id.replace("FEEDR-", "");
1026                                         }
1027                                 }
1028                         }
1029
1030                 } else if (direction == "prev") {
1031
1032                         var e = feed;
1033
1034                         while (e) {
1035
1036                                 if (e.previousSibling) {
1037
1038                                         e = e.previousSibling;
1039
1040                                 } else if (e.parentNode.parentNode.previousSibling) {
1041
1042                                         var this_cat = e.parentNode.parentNode;
1043
1044                                         e = false;
1045
1046                                         if (this_cat && this_cat.previousSibling) {
1047                                                 while (!e && this_cat.previousSibling) {
1048                                                         this_cat = this_cat.previousSibling;
1049                                                         if (this_cat.id == "feedCatHolder") {
1050                                                                 e = this_cat.firstChild.lastChild;
1051                                                         }
1052                                                 }
1053                                         }
1054
1055                                 } else {
1056                                         e = false;
1057                            }
1058
1059                                 if (e) {
1060                                         if (!unread_only || (unread_only && e.className != "feed" &&
1061                                                         e.className != "error"))        {
1062                                                 return e.id.replace("FEEDR-", "");
1063                                         }
1064                                 }
1065                         }
1066                 }
1067         }
1068 }
1069
1070 function showBlockElement(id) {
1071         var elem = document.getElementById(id);
1072
1073         if (elem) {
1074                 elem.style.display = "block";
1075         } else {
1076                 alert("[showBlockElement] can't find element with id " + id);
1077         }
1078 }
1079
1080 function hideParentElement(e) {
1081         e.parentNode.style.display = "none";
1082 }
1083
1084 function dropboxSelect(e, v) {
1085         for (i = 0; i < e.length; i++) {
1086                 if (e[i].value == v) {
1087                         e.selectedIndex = i;
1088                         break;
1089                 }
1090         }
1091 }
1092
1093 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1094 // bugfixed just a little bit :-)
1095 function getURLParam(strParamName){
1096   var strReturn = "";
1097   var strHref = window.location.href;
1098
1099   if (strHref.indexOf("#") == strHref.length-1) {
1100                 strHref = strHref.substring(0, strHref.length-1);
1101   }
1102
1103   if ( strHref.indexOf("?") > -1 ){
1104     var strQueryString = strHref.substr(strHref.indexOf("?"));
1105     var aQueryString = strQueryString.split("&");
1106     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1107       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1108         var aParam = aQueryString[iParam].split("=");
1109         strReturn = aParam[1];
1110         break;
1111       }
1112     }
1113   }
1114   return strReturn;
1115 }
1116
1117 function leading_zero(p) {
1118         var s = String(p);
1119         if (s.length == 1) s = "0" + s;
1120         return s;
1121 }
1122
1123 function closeInfoBox(cleanup) {
1124         var box = document.getElementById('infoBox');
1125         var shadow = document.getElementById('infoBoxShadow');
1126
1127         if (shadow) {
1128                 shadow.style.display = "none";
1129         } else if (box) {
1130                 box.style.display = "none";
1131         }
1132
1133         if (cleanup) box.innerHTML = "&nbsp;";
1134
1135         enableHotkeys();
1136
1137         return false;
1138 }
1139
1140
1141 function displayDlg(id, param) {
1142
1143         if (!xmlhttp_ready(xmlhttp)) {
1144                 printLockingError();
1145                 return
1146         }
1147
1148         notify("");
1149
1150         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1151                 param_escape(id) + "&param=" + param_escape(param), true);
1152         xmlhttp.onreadystatechange=infobox_callback;
1153         xmlhttp.send(null);
1154
1155         disableHotkeys();
1156
1157         return false;
1158 }
1159
1160 function infobox_submit_callback() {
1161         if (xmlhttp.readyState == 4) {
1162                 closeInfoBox();
1163
1164                 // called from prefs, reload tab
1165                 if (active_tab) {
1166                         selectTab(active_tab, false);
1167                 }
1168
1169                 notify(xmlhttp.responseText);
1170
1171         }
1172 }
1173
1174 function infobox_callback() {
1175         if (xmlhttp.readyState == 4) {
1176                 var box = document.getElementById('infoBox');
1177                 var shadow = document.getElementById('infoBoxShadow');
1178                 if (box) {
1179                         box.innerHTML=xmlhttp.responseText;
1180                         if (shadow) {
1181                                 shadow.style.display = "block";
1182                         } else {
1183                                 box.style.display = "block";
1184                         }
1185                 }
1186         }
1187 }
1188
1189 function qaddFilter() {
1190
1191         if (!xmlhttp_ready(xmlhttp)) {
1192                 printLockingError();
1193                 return
1194         }
1195
1196         var query = Form.serialize("filter_add_form");
1197
1198         xmlhttp.open("GET", "backend.php?" + query, true);
1199         xmlhttp.onreadystatechange=infobox_submit_callback;
1200         xmlhttp.send(null);
1201
1202         return true;
1203 }
1204
1205 function toggleSubmitNotEmpty(e, submit_id) {
1206         try {
1207                 document.getElementById(submit_id).disabled = (e.value == "")
1208         } catch (e) {
1209                 exception_error("toggleSubmitNotEmpty", e);
1210         }
1211 }
1212
1213 function isValidURL(s) {
1214         return s.match("http://") != null || s.match("https://") != null;
1215 }
1216
1217 function qafAdd() {
1218
1219         if (!xmlhttp_ready(xmlhttp)) {
1220                 printLockingError();
1221                 return
1222         }
1223
1224         notify("Adding feed...");
1225
1226         closeInfoBox();
1227
1228         var feeds_doc = getFeedsContext().document;
1229
1230         feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1231
1232         var query = Form.serialize("feed_add_form");
1233
1234         xmlhttp.open("GET", "backend.php?" + query, true);
1235         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1236         xmlhttp.send(null);
1237 }
1238
1239 function filterCR(e)
1240 {
1241      var key;
1242
1243      if(window.event)
1244           key = window.event.keyCode;     //IE
1245      else
1246           key = e.which;     //firefox
1247
1248      if(key == 13)
1249           return false;
1250      else
1251           return true;
1252 }
1253
1254 function getMainContext() {
1255         if (parent.window != window) {
1256                 return parent.window;
1257         } else {
1258                 return this.window;
1259         }
1260 }
1261
1262 function getFeedsContext() {
1263         try {
1264                 return getMainContext().frames["feeds-frame"];
1265         } catch (e) {
1266                 exception_error("getFeedsContext", e);
1267         }
1268 }
1269
1270
1271 function getHeadlinesContext() {
1272         try {
1273                 return getMainContext().frames["headlines-frame"];
1274         } catch (e) {
1275                 exception_error("getHeadlinesContext", e);
1276         }
1277 }
1278
1279 var debug_last_class = "even";
1280
1281 function debug(msg) {
1282         var ctx = getMainContext();
1283
1284         if (ctx.debug_last_class == "even") {
1285                 ctx.debug_last_class = "odd";
1286         } else {
1287                 ctx.debug_last_class = "even";
1288         }
1289
1290         var c = ctx.document.getElementById('debug_output');
1291         if (c && c.style.display == "block") {
1292                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1293                         c.removeChild(c.lastChild);
1294                 }
1295
1296                 var d = new Date();
1297                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1298                         ":" + leading_zero(d.getSeconds());
1299                 c.innerHTML = "<li class=\"" + ctx.debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1300                         msg + "</li>" + c.innerHTML;
1301         }
1302 }
1303
1304 function getInitParam(key) {
1305         return getMainContext().init_params[key];
1306 }
1307
1308 function storeInitParam(key, value, is_client) {
1309         try {
1310                 if (!is_client) {
1311                         if (getMainContext().init_params[key] != value) {
1312                                 debug("storeInitParam: " + key + " => " + value);
1313                                 //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1314                                 //      param_escape(key) + "&value=" + param_escape(value));
1315                                 var f = getMainContext().document.getElementById("backReqBox");
1316                                 f.src = "backend.php?op=rpc&subop=storeParam&key=" +
1317                                         param_escape(key) + "&value=" + param_escape(value);
1318                         }
1319                 }
1320                 getMainContext().init_params[key] = value;
1321         } catch (e) {
1322                 exception_error("storeInitParam", e);
1323         }
1324 }
1325
1326 /*
1327 function storeInitParams(params, is_client) {
1328         try {
1329                 var s = "";
1330
1331                 for (k in params) {
1332                         if (getMainContext().init_params[k] != params[k]) {
1333                                 s += k + "=" + params[k] + ";";
1334                                 getMainContext().init_params[k] = params[k];
1335                         }
1336                 }
1337
1338                 debug("storeInitParams: " + s);
1339
1340                 if (!is_client) {
1341                         new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
1342                 }
1343         } catch (e) {
1344                 exception_error("storeInitParams", e);
1345         }
1346 }*/
1347
1348 function fatalError(code, message) {
1349         try {
1350                 var fe = document.getElementById("fatal_error");
1351                 var fc = document.getElementById("fatal_error_msg");
1352
1353                 fc.innerHTML = "Code " + code + ": " + message;
1354
1355                 fe.style.display = "block";
1356
1357         } catch (e) {
1358                 exception_error("fatalError", e);
1359         }
1360 }
1361
1362 function getFeedName(id) {
1363         var d = getFeedsContext().document;
1364         var e = d.getElementById("FEEDN-" + id);
1365         if (e) {
1366                 return e.innerHTML.stripTags();
1367         } else {
1368                 return null;
1369         }
1370 }