functions.js

   1 var hotkeys_enabled = true;
   2 var debug_mode_enabled = false;
   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 is_opera() {
  11         return navigator.userAgent.match("Opera");
  12 }
  13
  14 function is_khtml() {
  15         return navigator.userAgent.match("KHTML");
  16 }
  17
  18 function is_safari() {
  19         return navigator.userAgent.match("Safari");
  20 }
  21
  22 function exception_error(location, e, silent) {
  23         var msg;
  24
  25         if (e.fileName) {
  26                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  27
  28                 msg = "Exception: " + e.name + ", " + e.message +
  29                         "\nFunction: " + location + "()" +
  30                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  31
  32         } else {
  33                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  34         }
  35
  36         debug("<b>EXCEPTION: " + msg + "</b>");
  37
  38         if (!silent) {
  39                 alert(msg);
  40         }
  41 }
  42
  43 function disableHotkeys() {
  44         hotkeys_enabled = false;
  45 }
  46
  47 function enableHotkeys() {
  48         hotkeys_enabled = true;
  49 }
  50
  51 function xmlhttp_ready(obj) {
  52         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  53 }
  54
  55 function notify_callback() {
  56         var container = document.getElementById('notify');
  57         if (xmlhttp.readyState == 4) {
  58                 container.innerHTML=xmlhttp.responseText;
  59         }
  60 }
  61
  62 function rpc_notify_callback() {
  63         var container = document.getElementById('notify');
  64         if (xmlhttp_rpc.readyState == 4) {
  65                 container.innerHTML=xmlhttp_rpc.responseText;
  66         }
  67 }
  68
  69 function param_escape(arg) {
  70         if (typeof encodeURIComponent != 'undefined')
  71                 return encodeURIComponent(arg);
  72         else
  73                 return escape(arg);
  74 }
  75
  76 function param_unescape(arg) {
  77         if (typeof decodeURIComponent != 'undefined')
  78                 return decodeURIComponent(arg);
  79         else
  80                 return unescape(arg);
  81 }
  82
  83 function delay(gap) {
  84         var then,now;
  85         then=new Date().getTime();
  86         now=then;
  87         while((now-then)<gap) {
  88                 now=new Date().getTime();
  89         }
  90 }
  91
  92 var notify_hide_timerid = false;
  93 var notify_last_doc = false;
  94
  95 var notify_effect = false;
  96
  97 function hide_notify() {
  98         if (notify_last_doc) {
  99                 var n = notify_last_doc.getElementById("notify");
 100                 n.style.display = "none";
 101
 102 /*              if (browser_has_opacity()) {
 103                         if (notify_opacity >= 0) {
 104                                 notify_opacity = notify_opacity - 0.1;
 105                                 n.style.opacity = notify_opacity;
 106                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
 107                         } else {
 108                                 n.style.display = "none";
 109                                 n.style.opacity = 1;
 110                         }
 111                 } else {
 112                         n.style.display = "none";
 113                 } */
 114         }
 115 }
 116
 117 function notify_real(msg, doc, no_hide, is_err) {
 118
 119         var n = doc.getElementById("notify");
 120         var nb = doc.getElementById("notify_body");
 121
 122         if (!n || !nb) return;
 123
 124         if (notify_hide_timerid) {
 125                 window.clearTimeout(notify_hide_timerid);
 126         }
 127
 128         notify_last_doc = doc;
 129         notify_opacity = 1;
 130
 131         if (msg == "") {
 132                 if (n.style.display == "block") {
 133                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 134                 }
 135                 return;
 136         } else {
 137                 n.style.display = "block";
 138         }
 139
 140         if (is_err) {
 141                 n.className = "notifyError";
 142 //              n.style.backgroundColor = "#ffcccc";
 143 //              n.style.color = "black";
 144 //              n.style.borderColor = "#ff0000";
 145         } else {
 146                 n.className = "notify";
 147 //              n.style.backgroundColor = "#fff7d5";
 148 //              n.style.borderColor = "#d7c47a";
 149 //              n.style.color = "black";
 150         }
 151
 152 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 153
 154         nb.innerHTML = msg;
 155
 156         if (!no_hide) {
 157                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 158         }
 159 }
 160
 161 function p_notify(msg, no_hide, is_err) {
 162         notify_real(msg, document, no_hide, is_err);
 163 }
 164
 165 function notify(msg, no_hide, is_err) {
 166         notify_real(msg, document, no_hide, is_err);
 167 }
 168
 169 function printLockingError() {
 170         notify("Please wait until operation finishes");}
 171
 172 function hotkey_handler(e) {
 173
 174         try {
 175
 176                 var keycode;
 177                 var shift_key = false;
 178
 179                 try {
 180                         shift_key = e.shiftKey;
 181                 } catch (e) {
 182
 183                 }
 184
 185                 if (!hotkeys_enabled) return;
 186
 187                 if (window.event) {
 188                         keycode = window.event.keyCode;
 189                 } else if (e) {
 190                         keycode = e.which;
 191                 }
 192
 193                 if (keycode == 82) { // r
 194                         return scheduleFeedUpdate(true);
 195                 }
 196
 197                 if (keycode == 83) { // s
 198                         return displayDlg("search", getActiveFeedId());
 199                 }
 200
 201                 if (keycode == 85) { // u
 202                         if (getActiveFeedId()) {
 203                                 return viewfeed(getActiveFeedId(), "ForceUpdate");
 204                         }
 205                 }
 206
 207                 if (keycode == 65) { // a
 208                         return toggleDispRead();
 209                 }
 210
 211                 var feedlist = document.getElementById('feedList');
 212
 213                 if (keycode == 74) { // j
 214                         var feed = getActiveFeedId();
 215                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 216                         if (new_feed) viewfeed(new_feed, '');
 217                 }
 218
 219                 if (keycode == 75) { // k
 220                         var feed = getActiveFeedId();
 221                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 222                         if (new_feed) viewfeed(new_feed, '');
 223                 }
 224
 225                 if (!is_safari() && (keycode == 78 || keycode == 40)) { // n, down
 226                         if (typeof moveToPost != 'undefined') {
 227                                 return moveToPost('next');
 228                         }
 229                 }
 230
 231                 if (!is_safari() && (keycode == 80 || keycode == 38)) { // p, up
 232                         if (typeof moveToPost != 'undefined') {
 233                                 return moveToPost('prev');
 234                         }
 235                 }
 236
 237                 if (keycode == 68 && shift_key) { // d
 238                         if (!debug_mode_enabled) {
 239                                 document.getElementById('debug_output').style.display = 'block';
 240                                 debug('debug mode activated');
 241                         } else {
 242                                 document.getElementById('debug_output').style.display = 'none';
 243                         }
 244
 245                         debug_mode_enabled = !debug_mode_enabled;
 246                 }
 247
 248                 if (keycode == 190 && shift_key) { // >
 249                         viewFeedGoPage(1);
 250                 }
 251
 252                 if (keycode == 188 && shift_key) { // <
 253                         viewFeedGoPage(-1);
 254                 }
 255
 256                 if (keycode == 191 && shift_key) { // ?
 257                         viewFeedGoPage(0);
 258                 }
 259
 260                 if (keycode == 69 && shift_key) {
 261                         return editFeedDlg(getActiveFeedId());
 262                 }
 263
 264                 if (keycode == 67) { // c
 265                         if (getActiveFeedId()) {
 266                                 return catchupCurrentFeed();
 267                         }
 268                 }
 269
 270                 if (keycode == 90) { // z
 271                         if (getActiveFeedId()) {
 272                                 return catchupPage();
 273                         }
 274                 }
 275
 276                 if (typeof localHotkeyHandler != 'undefined') {
 277                         try {
 278                                 return localHotkeyHandler(e);
 279                         } catch (e) {
 280                                 exception_error("hotkey_handler, local:", e);
 281                         }
 282                 }
 283
 284                 debug("KP=" + keycode);
 285         } catch (e) {
 286                 exception_error("hotkey_handler", e);
 287         }
 288 }
 289
 290 function cleanSelectedList(element) {
 291         var content = document.getElementById(element);
 292
 293         if (!document.getElementById("feedCatHolder")) {
 294                 for (i = 0; i < content.childNodes.length; i++) {
 295                         var child = content.childNodes[i];
 296                         try {
 297                                 child.className = child.className.replace("Selected", "");
 298                         } catch (e) {
 299                                 //
 300                         }
 301                 }
 302         } else {
 303                 for (i = 0; i < content.childNodes.length; i++) {
 304                         var child = content.childNodes[i];
 305                         if (child.id == "feedCatHolder") {
 306                                 debug(child.id);
 307                                 var fcat = child.lastChild;
 308                                 for (j = 0; j < fcat.childNodes.length; j++) {
 309                                         var feed = fcat.childNodes[j];
 310                                         feed.className = feed.className.replace("Selected", "");
 311                                 }
 312                         }
 313                 }
 314         }
 315 }
 316
 317
 318 function cleanSelected(element) {
 319         var content = document.getElementById(element);
 320
 321         for (i = 0; i < content.rows.length; i++) {
 322                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 323         }
 324 }
 325
 326 function getVisibleUnreadHeadlines() {
 327         var content = document.getElementById("headlinesList");
 328
 329         var rows = new Array();
 330
 331         for (i = 0; i < content.rows.length; i++) {
 332                 var row_id = content.rows[i].id.replace("RROW-", "");
 333                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 334                                 rows.push(row_id);
 335                 }
 336         }
 337         return rows;
 338 }
 339
 340 function getVisibleHeadlineIds() {
 341
 342         var content = document.getElementById("headlinesList");
 343
 344         var rows = new Array();
 345
 346         for (i = 0; i < content.rows.length; i++) {
 347                 var row_id = content.rows[i].id.replace("RROW-", "");
 348                 if (row_id.length > 0) {
 349                                 rows.push(row_id);
 350                 }
 351         }
 352         return rows;
 353 }
 354
 355 function getFirstVisibleHeadlineId() {
 356         var rows = getVisibleHeadlineIds();
 357         return rows[0];
 358 }
 359
 360 function getLastVisibleHeadlineId() {
 361         var rows = getVisibleHeadlineIds();
 362         return rows[rows.length-1];
 363 }
 364
 365 function markHeadline(id) {
 366         var row = document.getElementById("RROW-" + id);
 367         if (row) {
 368                 var is_active = false;
 369
 370                 if (row.className.match("Active")) {
 371                         is_active = true;
 372                 }
 373                 row.className = row.className.replace("Selected", "");
 374                 row.className = row.className.replace("Active", "");
 375                 row.className = row.className.replace("Insensitive", "");
 376
 377                 if (is_active) {
 378                         row.className = row.className = "Active";
 379                 }
 380
 381                 var check = document.getElementById("RCHK-" + id);
 382
 383                 if (check) {
 384                         check.checked = true;
 385                 }
 386
 387                 row.className = row.className + "Selected";
 388
 389         }
 390 }
 391
 392 function getFeedIds() {
 393         var content = document.getElementById("feedsList");
 394
 395         var rows = new Array();
 396
 397         for (i = 0; i < content.rows.length; i++) {
 398                 var id = content.rows[i].id.replace("FEEDR-", "");
 399                 if (id.length > 0) {
 400                         rows.push(id);
 401                 }
 402         }
 403
 404         return rows;
 405 }
 406
 407 function setCookie(name, value, lifetime, path, domain, secure) {
 408
 409         var d = false;
 410
 411         if (lifetime) {
 412                 d = new Date();
 413                 d.setTime(lifetime * 1000);
 414         }
 415
 416         int_setCookie(name, value, d, path, domain, secure);
 417
 418 }
 419
 420 function int_setCookie(name, value, expires, path, domain, secure) {
 421         document.cookie= name + "=" + escape(value) +
 422                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 423                 ((path) ? "; path=" + path : "") +
 424                 ((domain) ? "; domain=" + domain : "") +
 425                 ((secure) ? "; secure" : "");
 426 }
 427
 428 function delCookie(name, path, domain) {
 429         if (getCookie(name)) {
 430                 document.cookie = name + "=" +
 431                 ((path) ? ";path=" + path : "") +
 432                 ((domain) ? ";domain=" + domain : "" ) +
 433                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 434         }
 435 }
 436
 437
 438 function getCookie(name) {
 439
 440         var dc = document.cookie;
 441         var prefix = name + "=";
 442         var begin = dc.indexOf("; " + prefix);
 443         if (begin == -1) {
 444             begin = dc.indexOf(prefix);
 445             if (begin != 0) return null;
 446         }
 447         else {
 448             begin += 2;
 449         }
 450         var end = document.cookie.indexOf(";", begin);
 451         if (end == -1) {
 452             end = dc.length;
 453         }
 454         return unescape(dc.substring(begin + prefix.length, end));
 455 }
 456
 457 function disableContainerChildren(id, disable, doc) {
 458
 459         if (!doc) doc = document;
 460
 461         var container = doc.getElementById(id);
 462
 463         if (!container) {
 464                 //alert("disableContainerChildren: element " + id + " not found");
 465                 return;
 466         }
 467
 468         for (var i = 0; i < container.childNodes.length; i++) {
 469                 var child = container.childNodes[i];
 470
 471                 try {
 472                         child.disabled = disable;
 473                 } catch (E) {
 474
 475                 }
 476
 477                 if (disable) {
 478                         if (child.className && child.className.match("button")) {
 479                                 child.className = "disabledButton";
 480                         }
 481                 } else {
 482                         if (child.className && child.className.match("disabledButton")) {
 483                                 child.className = "button";
 484                         }
 485                 }
 486         }
 487
 488 }
 489
 490 function gotoPreferences() {
 491         document.location.href = "prefs.php";
 492 }
 493
 494 function gotoMain() {
 495         document.location.href = "tt-rss.php";
 496 }
 497
 498 function gotoExportOpml() {
 499         document.location.href = "opml.php?op=Export";
 500 }
 501
 502 function getActiveFeedId() {
 503 //      return getCookie("ttrss_vf_actfeed");
 504         try {
 505                 debug("gAFID: " + active_feed_id);
 506                 return active_feed_id;
 507         } catch (e) {
 508                 exception_error("getActiveFeedId", e);
 509         }
 510 }
 511
 512 function activeFeedIsCat() {
 513         return active_feed_is_cat;
 514 }
 515
 516 function setActiveFeedId(id) {
 517 //      return setCookie("ttrss_vf_actfeed", id);
 518         try {
 519                 debug("sAFID(" + id + ")");
 520                 active_feed_id = id;
 521         } catch (e) {
 522                 exception_error("setActiveFeedId", e);
 523         }
 524 }
 525
 526 function parse_counters(reply, scheduled_call) {
 527         try {
 528
 529                 var feeds_found = 0;
 530
 531                 if (reply.firstChild && reply.firstChild.firstChild) {
 532                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 533                         reply = reply.firstChild;
 534                 }
 535
 536                 for (var l = 0; l < reply.childNodes.length; l++) {
 537                         if (!reply.childNodes[l] ||
 538                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 539                                 // where did this come from?
 540                                 continue;
 541                         }
 542
 543                         var id = reply.childNodes[l].getAttribute("id");
 544                         var t = reply.childNodes[l].getAttribute("type");
 545                         var ctr = reply.childNodes[l].getAttribute("counter");
 546                         var error = reply.childNodes[l].getAttribute("error");
 547                         var has_img = reply.childNodes[l].getAttribute("hi");
 548                         var updated = reply.childNodes[l].getAttribute("updated");
 549
 550                         if (id == "global-unread") {
 551                                 global_unread = ctr;
 552                                 updateTitle();
 553                                 continue;
 554                         }
 555
 556                         if (id == "subscribed-feeds") {
 557                                 feeds_found = ctr;
 558                                 continue;
 559                         }
 560
 561                         if (t == "category") {
 562                                 var catctr = document.getElementById("FCATCTR-" + id);
 563                                 if (catctr) {
 564                                         catctr.innerHTML = "(" + ctr + ")";
 565                                         if (ctr > 0) {
 566                                                 catctr.className = "catCtrHasUnread";
 567                                         } else {
 568                                                 catctr.className = "catCtrNoUnread";
 569                                         }
 570                                 }
 571                                 continue;
 572                         }
 573
 574                         var feedctr = document.getElementById("FEEDCTR-" + id);
 575                         var feedu = document.getElementById("FEEDU-" + id);
 576                         var feedr = document.getElementById("FEEDR-" + id);
 577                         var feed_img = document.getElementById("FIMG-" + id);
 578                         var feedlink = document.getElementById("FEEDL-" + id);
 579                         var feedupd = document.getElementById("FLUPD-" + id);
 580
 581                         if (updated && feedlink) {
 582                                 if (error) {
 583                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 584                                 } else {
 585                                         feedlink.title = "Updated: " + updated;
 586                                 }
 587                         }
 588
 589                         if (updated && feedupd) {
 590                                 if (error) {
 591                                         feedupd.innerHTML = updated + " (Error)";
 592                                 } else {
 593                                         feedupd.innerHTML = updated;
 594                                 }
 595                         }
 596
 597                         if (feedctr && feedu && feedr) {
 598
 599                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 600                                         viewCurrentFeed();
 601                                 }
 602
 603                                 feedu.innerHTML = ctr;
 604
 605                                 if (error) {
 606                                         feedr.className = feedr.className.replace("feed", "error");
 607                                 } else if (id > 0) {
 608                                         feedr.className = feedr.className.replace("error", "feed");
 609                                 }
 610
 611                                 if (ctr > 0) {
 612                                         feedctr.className = "odd";
 613                                         if (!feedr.className.match("Unread")) {
 614                                                 var is_selected = feedr.className.match("Selected");
 615
 616                                                 feedr.className = feedr.className.replace("Selected", "");
 617                                                 feedr.className = feedr.className.replace("Unread", "");
 618
 619                                                 feedr.className = feedr.className + "Unread";
 620
 621                                                 if (is_selected) {
 622                                                         feedr.className = feedr.className + "Selected";
 623                                                 }
 624
 625                                         }
 626                                 } else {
 627                                         feedctr.className = "invisible";
 628                                         feedr.className = feedr.className.replace("Unread", "");
 629                                 }
 630                         }
 631                 }
 632
 633                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 634
 635                 var feeds_stored = number_of_feeds;
 636
 637                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 638
 639                 if (feeds_stored != feeds_found) {
 640                         number_of_feeds = feeds_found;
 641
 642                         if (feeds_stored != 0) {
 643                                 debug("Subscribed feed number changed, refreshing feedlist");
 644                                 setTimeout('updateFeedList(false, false)', 50);
 645                         }
 646                 }
 647
 648         } catch (e) {
 649                 exception_error("parse_counters", e);
 650         }
 651 }
 652
 653 function parse_counters_reply(xmlhttp, scheduled_call) {
 654
 655         if (!xmlhttp.responseXML) {
 656                 notify("refetch_callback: backend did not return valid XML", true, true);
 657                 return;
 658         }
 659
 660         var reply = xmlhttp.responseXML.firstChild;
 661
 662         if (!reply) {
 663                 notify("refetch_callback: backend did not return expected XML object", true, true);
 664                 updateTitle("");
 665                 return;
 666         }
 667
 668         var error_code = false;
 669         var error_msg = false;
 670
 671         if (reply.firstChild) {
 672                 error_code = reply.firstChild.getAttribute("error-code");
 673                 error_msg = reply.firstChild.getAttribute("error-msg");
 674         }
 675
 676         if (!error_code) {
 677                 error_code = reply.getAttribute("error-code");
 678                 error_msg = reply.getAttribute("error-msg");
 679         }
 680
 681         if (error_code && error_code != 0) {
 682                 debug("refetch_callback: got error code " + error_code);
 683                 return fatalError(error_code, error_msg);
 684         }
 685
 686         var counters = reply.firstChild;
 687
 688         parse_counters(counters, scheduled_call);
 689
 690         var runtime_info = counters.nextSibling;
 691
 692         parse_runtime_info(runtime_info);
 693
 694         if (getInitParam("feeds_sort_by_unread") == 1) {
 695                         resort_feedlist();
 696         }
 697
 698         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 699
 700 }
 701
 702 function all_counters_callback() {
 703         if (xmlhttp_rpc.readyState == 4) {
 704                 try {
 705 /*                      if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 706                                 debug("[all_counters_callback] backend did not return valid XML");
 707                                 return;
 708                         }
 709
 710                         debug("in all_counters_callback : " + xmlhttp_rpc.responseXML);
 711
 712                         var reply = xmlhttp_rpc.responseXML.firstChild;
 713
 714                         var counters = reply.firstChild;
 715
 716                         parse_counters(counters);
 717
 718                         var runtime = counters.nextSibling;
 719
 720                         if (runtime) {
 721                                 parse_runtime_info(runtime);
 722                         }
 723
 724                         if (getInitParam("feeds_sort_by_unread") == 1) {
 725                                 resort_feedlist();
 726                         }
 727
 728                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1); */
 729
 730                         debug("in all_counters_callback");
 731
 732                         parse_counters_reply(xmlhttp_rpc);
 733
 734                 } catch (e) {
 735                         exception_error("all_counters_callback", e);
 736                 }
 737         }
 738 }
 739
 740 function get_feed_entry_unread(doc, elem) {
 741
 742         var id = elem.id.replace("FEEDR-", "");
 743
 744         if (id <= 0) {
 745                 return -1;
 746         }
 747
 748         try {
 749                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 750         } catch (e) {
 751                 return -1;
 752         }
 753 }
 754
 755 function resort_category(doc, node) {
 756         debug("resort_category: " + node);
 757
 758         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 759                 for (i = 0; i < node.childNodes.length; i++) {
 760                         if (node.childNodes[i].nodeName != "LI") { continue; }
 761
 762                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 763                                 continue;
 764                         }
 765
 766                         for (j = i+1; j < node.childNodes.length; j++) {
 767                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 768
 769                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 770                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 771
 772                                 if (cur_val > tmp_val) {
 773                                         tempnode_i = node.childNodes[i].cloneNode(true);
 774                                         tempnode_j = node.childNodes[j].cloneNode(true);
 775                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 776                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 777                                 }
 778                         }
 779
 780                 }
 781         }
 782
 783 }
 784
 785 function resort_feedlist() {
 786         debug("resort_feedlist");
 787
 788         var fd = document;
 789
 790         if (fd.getElementById("feedCatHolder")) {
 791
 792                 var feeds = fd.getElementById("feedList");
 793                 var child = feeds.firstChild;
 794
 795                 while (child) {
 796
 797                         if (child.id == "feedCatHolder") {
 798                                 resort_category(fd, child.firstChild);
 799                         }
 800
 801                         child = child.nextSibling;
 802                 }
 803
 804         } else {
 805                 resort_category(fd, fd.getElementById("feedList"));
 806         }
 807 }
 808
 809 function update_all_counters(feed) {
 810         if (xmlhttp_ready(xmlhttp_rpc)) {
 811                 var query = "backend.php?op=rpc&subop=getAllCounters";
 812
 813                 if (feed > 0) {
 814                         query = query + "&aid=" + feed;
 815                 }
 816
 817                 if (tagsAreDisplayed()) {
 818                         query = query + "&omode=lt";
 819                 } else {
 820                         query = query + "&omode=flc";
 821                 }
 822
 823                 debug("update_all_counters QUERY: " + query);
 824
 825                 var date = new Date();
 826                 var timestamp = Math.round(date.getTime() / 1000);
 827                 query = query + "&ts=" + timestamp
 828
 829                 xmlhttp_rpc.open("GET", query, true);
 830                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 831                 xmlhttp_rpc.send(null);
 832         }
 833 }
 834
 835 function popupHelp(tid) {
 836         var w = window.open("backend.php?op=help&tid=" + tid,
 837                 "Popup Help",
 838                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 839 }
 840
 841 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 842   * * @author Sundar Dorai-Raj
 843   * * Email: sdoraira@vt.edu
 844   * * This program is free software; you can redistribute it and/or
 845   * * modify it under the terms of the GNU General Public License
 846   * * as published by the Free Software Foundation; either version 2
 847   * * of the License, or (at your option) any later version,
 848   * * provided that any use properly credits the author.
 849   * * This program is distributed in the hope that it will be useful,
 850   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 851   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 852   * * GNU General Public License for more details at http://www.gnu.org * * */
 853
 854   var numbers=".0123456789";
 855   function isNumeric(x) {
 856     // is x a String or a character?
 857     if(x.length>1) {
 858       // remove negative sign
 859       x=Math.abs(x)+"";
 860       for(j=0;j<x.length;j++) {
 861         // call isNumeric recursively for each character
 862         number=isNumeric(x.substring(j,j+1));
 863         if(!number) return number;
 864       }
 865       return number;
 866     }
 867     else {
 868       // if x is number return true
 869       if(numbers.indexOf(x)>=0) return true;
 870       return false;
 871     }
 872   }
 873
 874
 875 function hideOrShowFeeds(doc, hide) {
 876
 877         debug("hideOrShowFeeds: " + doc + ", " + hide);
 878
 879         var fd = document;
 880
 881         var list = fd.getElementById("feedList");
 882
 883         if (fd.getElementById("feedCatHolder")) {
 884
 885                 var feeds = fd.getElementById("feedList");
 886                 var child = feeds.firstChild;
 887
 888                 while (child) {
 889
 890                         if (child.id == "feedCatHolder") {
 891                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 892                         }
 893
 894                         child = child.nextSibling;
 895                 }
 896
 897         } else {
 898                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 899         }
 900 }
 901
 902 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 903
 904 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 905
 906         var cat_unread = 0;
 907
 908         if (!node) {
 909                 debug("hideOrShowFeeds: passed node is null, aborting");
 910                 return;
 911         }
 912
 913         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 914                 for (i = 0; i < node.childNodes.length; i++) {
 915                         if (node.childNodes[i].nodeName != "LI") { continue; }
 916
 917                         if (node.childNodes[i].style != undefined) {
 918
 919                                 var has_unread = (node.childNodes[i].className != "feed");
 920
 921         //                      debug(node.childNodes[i].id + " --> " + has_unread);
 922
 923                                 if (hide && !has_unread) {
 924                                         node.childNodes[i].style.display = "none";
 925                                 }
 926
 927                                 if (!hide) {
 928                                         node.childNodes[i].style.display = "list-item";
 929                                 }
 930
 931                                 if (has_unread) {
 932                                         node.childNodes[i].style.display = "list-item";
 933                                         cat_unread++;
 934                                 }
 935                         }
 936                 }
 937         }
 938
 939         if (cat_unread == 0) {
 940                 if (cat_node.style == undefined) {
 941                         debug("ERROR: supplied cat_node " + cat_node +
 942                                 " has no styles. WTF?");
 943                         return;
 944                 }
 945                 if (hide) {
 946                         cat_node.style.display = "none";
 947                 } else {
 948                         cat_node.style.display = "list-item";
 949                 }
 950         } else {
 951                 try {
 952                         cat_node.style.display = "list-item";
 953                 } catch (e) {
 954                         debug(e);
 955                 }
 956         }
 957
 958 //      debug("unread for category: " + cat_unread);
 959 }
 960
 961 function selectTableRow(r, do_select) {
 962         r.className = r.className.replace("Selected", "");
 963
 964         if (do_select) {
 965                 r.className = r.className + "Selected";
 966         }
 967 }
 968
 969 function selectTableRowById(elem_id, check_id, do_select) {
 970
 971         try {
 972
 973                 var row = document.getElementById(elem_id);
 974
 975                 if (row) {
 976                         selectTableRow(row, do_select);
 977                 }
 978
 979                 var check = document.getElementById(check_id);
 980
 981                 if (check) {
 982                         check.checked = do_select;
 983                 }
 984         } catch (e) {
 985                 exception_error("selectTableRowById", e);
 986         }
 987 }
 988
 989 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 990         classcheck, reset_others) {
 991
 992         var content = document.getElementById(content_id);
 993
 994         if (!content) {
 995                 alert("[selectTableRows] Element " + content_id + " not found.");
 996                 return;
 997         }
 998
 999         for (i = 0; i < content.rows.length; i++) {
1000                 if (!classcheck || content.rows[i].className.match(classcheck)) {
1001
1002                         if (content.rows[i].id.match(prefix)) {
1003                                 selectTableRow(content.rows[i], do_select);
1004
1005                                 var row_id = content.rows[i].id.replace(prefix, "");
1006                                 var check = document.getElementById(check_prefix + row_id);
1007
1008                                 if (check) {
1009                                         check.checked = do_select;
1010                                 }
1011                         } else if (reset_others) {
1012                                 selectTableRow(content.rows[i], false);
1013
1014                                 var row_id = content.rows[i].id.replace(prefix, "");
1015                                 var check = document.getElementById(check_prefix + row_id);
1016
1017                                 if (check) {
1018                                         check.checked = false;
1019                                 }
1020
1021                         }
1022                 } else if (reset_others) {
1023                         selectTableRow(content.rows[i], false);
1024
1025                         var row_id = content.rows[i].id.replace(prefix, "");
1026                         var check = document.getElementById(check_prefix + row_id);
1027
1028                         if (check) {
1029                                 check.checked = false;
1030                         }
1031
1032                 }
1033         }
1034 }
1035
1036 function getSelectedTableRowIds(content_id, prefix) {
1037
1038         var content = document.getElementById(content_id);
1039
1040         if (!content) {
1041                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
1042                 return;
1043         }
1044
1045         var sel_rows = new Array();
1046
1047         for (i = 0; i < content.rows.length; i++) {
1048                 if (content.rows[i].id.match(prefix) &&
1049                                 content.rows[i].className.match("Selected")) {
1050
1051                         var row_id = content.rows[i].id.replace(prefix + "-", "");
1052                         sel_rows.push(row_id);
1053                 }
1054         }
1055
1056         return sel_rows;
1057
1058 }
1059
1060 function toggleSelectRowById(sender, id) {
1061         var row = document.getElementById(id);
1062
1063         if (sender.checked) {
1064                 if (!row.className.match("Selected")) {
1065                         row.className = row.className + "Selected";
1066                 }
1067         } else {
1068                 if (row.className.match("Selected")) {
1069                         row.className = row.className.replace("Selected", "");
1070                 }
1071         }
1072 }
1073
1074 function toggleSelectListRow(sender) {
1075         var parent_row = sender.parentNode;
1076
1077         if (sender.checked) {
1078                 if (!parent_row.className.match("Selected")) {
1079                         parent_row.className = parent_row.className + "Selected";
1080                 }
1081         } else {
1082                 if (parent_row.className.match("Selected")) {
1083                         parent_row.className = parent_row.className.replace("Selected", "");
1084                 }
1085         }
1086 }
1087
1088
1089 function toggleSelectRow(sender) {
1090         var parent_row = sender.parentNode.parentNode;
1091
1092         if (sender.checked) {
1093                 if (!parent_row.className.match("Selected")) {
1094                         parent_row.className = parent_row.className + "Selected";
1095                 }
1096         } else {
1097                 if (parent_row.className.match("Selected")) {
1098                         parent_row.className = parent_row.className.replace("Selected", "");
1099                 }
1100         }
1101 }
1102
1103 function openExternalUrl(url) {
1104         var w = window.open(url);
1105 }
1106
1107 function getRelativeFeedId(list, id, direction, unread_only) {
1108         if (!id) {
1109                 if (direction == "next") {
1110                         for (i = 0; i < list.childNodes.length; i++) {
1111                                 var child = list.childNodes[i];
1112                                 if (child.id && child.id == "feedCatHolder") {
1113                                         if (child.lastChild) {
1114                                                 var cr = getRelativeFeedId(child.firstChild, id, direction, unread_only);
1115                                                 if (cr) return cr;
1116                                         }
1117                                 } else if (child.id && child.id.match("FEEDR-")) {
1118                                         return child.id.replace('FEEDR-', '');
1119                                 }
1120                         }
1121                 }
1122
1123                 // FIXME select last feed doesn't work when only unread feeds are visible
1124
1125                 if (direction == "prev") {
1126                         for (i = list.childNodes.length-1; i >= 0; i--) {
1127                                 var child = list.childNodes[i];
1128                                 if (child.id == "feedCatHolder") {
1129                                         if (child.firstChild) {
1130                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
1131                                                 if (cr) return cr;
1132                                         }
1133                                 } else if (child.id.match("FEEDR-")) {
1134
1135                                         if (getInitParam("hide_read_feeds") == 1) {
1136                                                 if (child.className != "feed") {
1137                                                         alert(child.className);
1138                                                         return child.id.replace('FEEDR-', '');
1139                                                 }
1140                                         } else {
1141                                                         return child.id.replace('FEEDR-', '');
1142                                         }
1143                                 }
1144                         }
1145                 }
1146         } else {
1147
1148                 var feed = list.ownerDocument.getElementById("FEEDR-" + id);
1149
1150                 if (getInitParam("hide_read_feeds") == 1) {
1151                         unread_only = true;
1152                 }
1153
1154                 if (direction == "next") {
1155
1156                         var e = feed;
1157
1158                         while (e) {
1159
1160                                 if (e.nextSibling) {
1161
1162                                         e = e.nextSibling;
1163
1164                                 } else if (e.parentNode.parentNode.nextSibling) {
1165
1166                                         var this_cat = e.parentNode.parentNode;
1167
1168                                         e = false;
1169
1170                                         if (this_cat && this_cat.nextSibling) {
1171                                                 while (!e && this_cat.nextSibling) {
1172                                                         this_cat = this_cat.nextSibling;
1173                                                         if (this_cat.id == "feedCatHolder") {
1174                                                                 e = this_cat.firstChild.firstChild;
1175                                                         }
1176                                                 }
1177                                         }
1178
1179                                 } else {
1180                                         e = false;
1181                            }
1182
1183                                 if (e) {
1184                                         if (!unread_only || (unread_only && e.className != "feed" &&
1185                                                         e.className.match("feed")))     {
1186                                                 return e.id.replace("FEEDR-", "");
1187                                         }
1188                                 }
1189                         }
1190
1191                 } else if (direction == "prev") {
1192
1193                         var e = feed;
1194
1195                         while (e) {
1196
1197                                 if (e.previousSibling) {
1198
1199                                         e = e.previousSibling;
1200
1201                                 } else if (e.parentNode.parentNode.previousSibling) {
1202
1203                                         var this_cat = e.parentNode.parentNode;
1204
1205                                         e = false;
1206
1207                                         if (this_cat && this_cat.previousSibling) {
1208                                                 while (!e && this_cat.previousSibling) {
1209                                                         this_cat = this_cat.previousSibling;
1210                                                         if (this_cat.id == "feedCatHolder") {
1211                                                                 e = this_cat.firstChild.lastChild;
1212                                                         }
1213                                                 }
1214                                         }
1215
1216                                 } else {
1217                                         e = false;
1218                            }
1219
1220                                 if (e) {
1221                                         if (!unread_only || (unread_only && e.className != "feed" &&
1222                                                         e.className.match("feed")))     {
1223                                                 return e.id.replace("FEEDR-", "");
1224                                         }
1225                                 }
1226                         }
1227                 }
1228         }
1229 }
1230
1231 function showBlockElement(id) {
1232         var elem = document.getElementById(id);
1233
1234         if (elem) {
1235                 elem.style.display = "block";
1236         } else {
1237                 alert("[showBlockElement] can't find element with id " + id);
1238         }
1239 }
1240
1241 function hideParentElement(e) {
1242         e.parentNode.style.display = "none";
1243 }
1244
1245 function dropboxSelect(e, v) {
1246         for (i = 0; i < e.length; i++) {
1247                 if (e[i].value == v) {
1248                         e.selectedIndex = i;
1249                         break;
1250                 }
1251         }
1252 }
1253
1254 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1255 // bugfixed just a little bit :-)
1256 function getURLParam(strParamName){
1257   var strReturn = "";
1258   var strHref = window.location.href;
1259
1260   if (strHref.indexOf("#") == strHref.length-1) {
1261                 strHref = strHref.substring(0, strHref.length-1);
1262   }
1263
1264   if ( strHref.indexOf("?") > -1 ){
1265     var strQueryString = strHref.substr(strHref.indexOf("?"));
1266     var aQueryString = strQueryString.split("&");
1267     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1268       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1269         var aParam = aQueryString[iParam].split("=");
1270         strReturn = aParam[1];
1271         break;
1272       }
1273     }
1274   }
1275   return strReturn;
1276 }
1277
1278 function leading_zero(p) {
1279         var s = String(p);
1280         if (s.length == 1) s = "0" + s;
1281         return s;
1282 }
1283
1284 function closeInfoBox(cleanup) {
1285         var box = document.getElementById('infoBox');
1286         var shadow = document.getElementById('infoBoxShadow');
1287
1288         if (shadow) {
1289                 shadow.style.display = "none";
1290         } else if (box) {
1291                 box.style.display = "none";
1292         }
1293
1294         if (cleanup) box.innerHTML = "&nbsp;";
1295
1296         enableHotkeys();
1297
1298         return false;
1299 }
1300
1301
1302 function displayDlg(id, param) {
1303
1304         if (!xmlhttp_ready(xmlhttp)) {
1305                 printLockingError();
1306                 return
1307         }
1308
1309         notify("");
1310
1311         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1312                 param_escape(id) + "&param=" + param_escape(param), true);
1313         xmlhttp.onreadystatechange=infobox_callback;
1314         xmlhttp.send(null);
1315
1316         disableHotkeys();
1317
1318         return false;
1319 }
1320
1321 function infobox_submit_callback() {
1322         if (xmlhttp.readyState == 4) {
1323                 closeInfoBox();
1324
1325                 try {
1326                         // called from prefs, reload tab
1327                         if (active_tab) {
1328                                 selectTab(active_tab, false);
1329                         }
1330                 } catch (e) { }
1331
1332                 notify(xmlhttp.responseText);
1333
1334         }
1335 }
1336
1337 function infobox_callback() {
1338         if (xmlhttp.readyState == 4) {
1339                 var box = document.getElementById('infoBox');
1340                 var shadow = document.getElementById('infoBoxShadow');
1341                 if (box) {
1342                         box.innerHTML=xmlhttp.responseText;
1343                         if (shadow) {
1344                                 shadow.style.display = "block";
1345                         } else {
1346                                 box.style.display = "block";
1347                         }
1348                 }
1349                 notify("");
1350         }
1351 }
1352
1353 function qaddFilter() {
1354
1355         if (!xmlhttp_ready(xmlhttp)) {
1356                 printLockingError();
1357                 return
1358         }
1359
1360         var form = document.forms['filter_add_form'];
1361         var reg_exp = form.reg_exp.value;
1362
1363         if (reg_exp == "") {
1364                 alert("Can't add filter: nothing to match on.");
1365                 return false;
1366         }
1367
1368         var query = Form.serialize("filter_add_form");
1369
1370         xmlhttp.open("GET", "backend.php?" + query, true);
1371         xmlhttp.onreadystatechange=infobox_submit_callback;
1372         xmlhttp.send(null);
1373
1374         return true;
1375 }
1376
1377 function toggleSubmitNotEmpty(e, submit_id) {
1378         try {
1379                 document.getElementById(submit_id).disabled = (e.value == "")
1380         } catch (e) {
1381                 exception_error("toggleSubmitNotEmpty", e);
1382         }
1383 }
1384
1385 function isValidURL(s) {
1386         return s.match("http://") != null || s.match("https://") != null;
1387 }
1388
1389 function qafAdd() {
1390
1391         if (!xmlhttp_ready(xmlhttp)) {
1392                 printLockingError();
1393                 return
1394         }
1395
1396         var form = document.forms['feed_add_form'];
1397         var feed_url = form.feed_url.value;
1398
1399         if (feed_url == "") {
1400                 alert("Can't subscribe: no feed URL given.");
1401                 return false;
1402         }
1403
1404         notify("Adding feed...", true);
1405
1406         closeInfoBox();
1407
1408         var feeds_doc = document;
1409
1410 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1411
1412         var query = Form.serialize("feed_add_form");
1413
1414         xmlhttp.open("GET", "backend.php?" + query, true);
1415         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1416         xmlhttp.send(null);
1417
1418         return false;
1419 }
1420
1421 function filterCR(e, f)
1422 {
1423      var key;
1424
1425      if(window.event)
1426           key = window.event.keyCode;     //IE
1427      else
1428           key = e.which;     //firefox
1429
1430         if (key == 13) {
1431                 if (typeof f != 'undefined') {
1432                         f();
1433                         return false;
1434                 } else {
1435                         return false;
1436                 }
1437         } else {
1438                 return true;
1439         }
1440 }
1441
1442 function getMainContext() {
1443         return this.window;
1444 }
1445
1446 function getFeedsContext() {
1447         return this.window;
1448 }
1449
1450 function getContentContext() {
1451         return this.window;
1452 }
1453
1454 function getHeadlinesContext() {
1455         return this.window;
1456 }
1457
1458 var debug_last_class = "even";
1459
1460 function debug(msg) {
1461
1462         if (debug_last_class == "even") {
1463                 debug_last_class = "odd";
1464         } else {
1465                 debug_last_class = "even";
1466         }
1467
1468         var c = document.getElementById('debug_output');
1469         if (c && c.style.display == "block") {
1470                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1471                         c.removeChild(c.lastChild);
1472                 }
1473
1474                 var d = new Date();
1475                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1476                         ":" + leading_zero(d.getSeconds());
1477                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1478                         msg + "</li>" + c.innerHTML;
1479         }
1480 }
1481
1482 function getInitParam(key) {
1483         return getMainContext().init_params[key];
1484 }
1485
1486 function storeInitParam(key, value, is_client) {
1487         try {
1488                 if (!is_client) {
1489                         if (getMainContext().init_params[key] != value) {
1490                                 debug("storeInitParam: " + key + " => " + value);
1491                                 //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1492                                 //      param_escape(key) + "&value=" + param_escape(value));
1493                                 var f = getMainContext().document.getElementById("backReqBox");
1494                                 f.src = "backend.php?op=rpc&subop=storeParam&key=" +
1495                                         param_escape(key) + "&value=" + param_escape(value);
1496                         }
1497                 }
1498                 getMainContext().init_params[key] = value;
1499         } catch (e) {
1500                 exception_error("storeInitParam", e);
1501         }
1502 }
1503
1504 /*
1505 function storeInitParams(params, is_client) {
1506         try {
1507                 var s = "";
1508
1509                 for (k in params) {
1510                         if (getMainContext().init_params[k] != params[k]) {
1511                                 s += k + "=" + params[k] + ";";
1512                                 getMainContext().init_params[k] = params[k];
1513                         }
1514                 }
1515
1516                 debug("storeInitParams: " + s);
1517
1518                 if (!is_client) {
1519                         new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
1520                 }
1521         } catch (e) {
1522                 exception_error("storeInitParams", e);
1523         }
1524 }*/
1525
1526 function fatalError(code, message) {
1527         try {
1528
1529                 if (code != 6) {
1530
1531                         var fe = document.getElementById("fatal_error");
1532                         var fc = document.getElementById("fatal_error_msg");
1533
1534                         fc.innerHTML = "Code " + code + ": " + message;
1535
1536                         fe.style.display = "block";
1537                 } else {
1538                         window.location.href = "login.php?rt=none";
1539                 }
1540
1541         } catch (e) {
1542                 exception_error("fatalError", e);
1543         }
1544 }
1545
1546 function getFeedName(id, is_cat) {
1547         var d = getFeedsContext().document;
1548
1549         var e;
1550
1551         if (is_cat) {
1552                 e = d.getElementById("FCATN-" + id);
1553         } else {
1554                 e = d.getElementById("FEEDN-" + id);
1555         }
1556         if (e) {
1557                 return e.innerHTML.stripTags();
1558         } else {
1559                 return null;
1560         }
1561 }
1562
1563 function viewContentUrl(url) {
1564         getContentContext().location = url;
1565 }
1566
1567 function filterDlgCheckAction(sender) {
1568
1569         try {
1570
1571                 var action = sender[sender.selectedIndex].value;
1572
1573                 var form = document.forms["filter_add_form"];
1574
1575                 if (!form) {
1576                         form = document.forms["filter_edit_form"];
1577                 }
1578
1579                 if (!form) {
1580                         debug("filterDlgCheckAction: can't find form!");
1581                         return;
1582                 }
1583
1584                 var action_param = form.action_param;
1585
1586                 if (!action_param) {
1587                         debug("filterDlgCheckAction: can't find action param!");
1588                         return;
1589                 }
1590
1591                 // if selected action supports parameters, enable params field
1592                 if (action == 4) {
1593                         action_param.disabled = false;
1594                 } else {
1595                         action_param.disabled = true;
1596                 }
1597
1598         } catch (e) {
1599                 exception_error(e, "filterDlgCheckAction");
1600         }
1601
1602 }
1603
1604 function explainError(code) {
1605         return displayDlg("explainError", code);
1606 }