functions.js

   1 var hotkeys_enabled = true;
   2 var debug_mode_enabled = false;
   3 var xmlhttp_rpc = Ajax.getTransport();
   4
   5 /* add method to remove element from array */
   6
   7 Array.prototype.remove = function(s) {
   8         for (var i=0; i < this.length; i++) {
   9                 if (s == this[i]) this.splice(i, 1);
  10         }
  11 }
  12
  13 function browser_has_opacity() {
  14         return navigator.userAgent.match("Gecko") != null ||
  15                 navigator.userAgent.match("Opera") != null;
  16 }
  17
  18 function is_msie() {
  19         return navigator.userAgent.match("MSIE");
  20 }
  21
  22 function is_opera() {
  23         return navigator.userAgent.match("Opera");
  24 }
  25
  26 function is_khtml() {
  27         return navigator.userAgent.match("KHTML");
  28 }
  29
  30 function is_safari() {
  31         return navigator.userAgent.match("Safari");
  32 }
  33
  34 function exception_error(location, e, silent) {
  35         var msg;
  36
  37         if (e.fileName) {
  38                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  39
  40                 msg = "Exception: " + e.name + ", " + e.message +
  41                         "\nFunction: " + location + "()" +
  42                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  43
  44         } else {
  45                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  46         }
  47
  48         debug("<b>EXCEPTION: " + msg + "</b>");
  49
  50         if (!silent) {
  51                 alert(msg);
  52         }
  53 }
  54
  55 function disableHotkeys() {
  56         hotkeys_enabled = false;
  57 }
  58
  59 function enableHotkeys() {
  60         hotkeys_enabled = true;
  61 }
  62
  63 function xmlhttp_ready(obj) {
  64         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  65 }
  66
  67 function open_article_callback(transport) {
  68         try {
  69
  70                 if (transport.responseXML) {
  71
  72                         var link = transport.responseXML.getElementsByTagName("link")[0];
  73                         var id = transport.responseXML.getElementsByTagName("id")[0];
  74
  75                         debug("open_article_callback, received link: " + link);
  76
  77                         if (link) {
  78                                 debug("link url: " + link.firstChild.nodeValue);
  79
  80                                 window.open(link.firstChild.nodeValue, "_blank");
  81
  82                                 if (id) {
  83                                         id = id.firstChild.nodeValue;
  84                                         if (!document.getElementById("headlinesList")) {
  85                                                 window.setTimeout("toggleUnread(" + id + ", 0)", 100);
  86                                         }
  87                                 }
  88                         } else {
  89                                 notify_error("Can't open article: received invalid article link");
  90                         }
  91                 } else {
  92                         notify_error("Can't open article: received invalid XML");
  93                 }
  94
  95         } catch (e) {
  96                 exception_error("open_article_callback", e);
  97         }
  98 }
  99
 100 function param_escape(arg) {
 101         if (typeof encodeURIComponent != 'undefined')
 102                 return encodeURIComponent(arg);
 103         else
 104                 return escape(arg);
 105 }
 106
 107 function param_unescape(arg) {
 108         if (typeof decodeURIComponent != 'undefined')
 109                 return decodeURIComponent(arg);
 110         else
 111                 return unescape(arg);
 112 }
 113
 114 function delay(gap) {
 115         var then,now;
 116         then=new Date().getTime();
 117         now=then;
 118         while((now-then)<gap) {
 119                 now=new Date().getTime();
 120         }
 121 }
 122
 123 var notify_hide_timerid = false;
 124
 125 function hide_notify() {
 126         var n = document.getElementById("notify");
 127         if (n) {
 128                 n.style.display = "none";
 129         }
 130 }
 131
 132 function notify_real(msg, no_hide, n_type) {
 133
 134         var n = document.getElementById("notify");
 135         var nb = document.getElementById("notify_body");
 136
 137         if (!n || !nb) return;
 138
 139         if (notify_hide_timerid) {
 140                 window.clearTimeout(notify_hide_timerid);
 141         }
 142
 143         if (msg == "") {
 144                 if (n.style.display == "block") {
 145                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 146                 }
 147                 return;
 148         } else {
 149                 n.style.display = "block";
 150         }
 151
 152         /* types:
 153
 154                 1 - generic
 155                 2 - progress
 156                 3 - error
 157                 4 - info
 158
 159         */
 160
 161         if (typeof __ != 'undefined') {
 162                 msg = __(msg);
 163         }
 164
 165         if (n_type == 1) {
 166                 n.className = "notify";
 167         } else if (n_type == 2) {
 168                 n.className = "notifyProgress";
 169                 msg = "<img src='images/indicator_white.gif'> " + msg;
 170         } else if (n_type == 3) {
 171                 n.className = "notifyError";
 172                 msg = "<img src='images/sign_excl.gif'> " + msg;
 173         } else if (n_type == 4) {
 174                 n.className = "notifyInfo";
 175                 msg = "<img src='images/sign_info.gif'> " + msg;
 176         }
 177
 178 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 179
 180         nb.innerHTML = msg;
 181
 182         if (!no_hide) {
 183                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 184         }
 185 }
 186
 187 function notify(msg, no_hide) {
 188         notify_real(msg, no_hide, 1);
 189 }
 190
 191 function notify_progress(msg, no_hide) {
 192         notify_real(msg, no_hide, 2);
 193 }
 194
 195 function notify_error(msg, no_hide) {
 196         notify_real(msg, no_hide, 3);
 197
 198 }
 199
 200 function notify_info(msg, no_hide) {
 201         notify_real(msg, no_hide, 4);
 202 }
 203
 204 function printLockingError() {
 205         notify_info("Please wait until operation finishes.");
 206 }
 207
 208 function hotkey_handler(e) {
 209
 210         try {
 211
 212                 var keycode;
 213                 var shift_key = false;
 214
 215                 try {
 216                         shift_key = e.shiftKey;
 217                 } catch (e) {
 218
 219                 }
 220
 221                 if (!hotkeys_enabled) {
 222                         debug("hotkeys disabled");
 223                         return;
 224                 }
 225
 226                 if (window.event) {
 227                         keycode = window.event.keyCode;
 228                 } else if (e) {
 229                         keycode = e.which;
 230                 }
 231
 232                 if (keycode == 82) { // r
 233                         return scheduleFeedUpdate(true);
 234                 }
 235
 236                 if (keycode == 83) { // s
 237                         return displayDlg("search", getActiveFeedId());
 238                 }
 239
 240                 if (keycode == 85) { // u
 241                         if (getActiveFeedId()) {
 242                                 return viewfeed(getActiveFeedId(), "ForceUpdate");
 243                         }
 244                 }
 245
 246                 if (keycode == 65) { // a
 247                         return toggleDispRead();
 248                 }
 249
 250                 var feedlist = document.getElementById('feedList');
 251
 252                 if (keycode == 74) { // j
 253                         var feed = getActiveFeedId();
 254                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 255                         if (new_feed) viewfeed(new_feed, '');
 256                 }
 257
 258                 if (keycode == 75) { // k
 259                         var feed = getActiveFeedId();
 260                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 261                         if (new_feed) viewfeed(new_feed, '');
 262                 }
 263
 264                 if (shift_key && (keycode == 78 || keycode == 40)) { // shift - n, down
 265                         return catchupRelativeToArticle(1);
 266                 }
 267
 268                 if (shift_key && (keycode == 80 || keycode == 38)) { // shift - p, up
 269                         return catchupRelativeToArticle(0);
 270                 }
 271
 272                 if (keycode == 78 || keycode == 40) { // n, down
 273                         if (typeof moveToPost != 'undefined') {
 274                                 return moveToPost('next');
 275                         }
 276                 }
 277
 278                 if (keycode == 80 || keycode == 38) { // p, up
 279                         if (typeof moveToPost != 'undefined') {
 280                                 return moveToPost('prev');
 281                         }
 282                 }
 283
 284                 if (keycode == 68 && shift_key) { // d
 285                         if (!debug_mode_enabled) {
 286                                 document.getElementById('debug_output').style.display = 'block';
 287                                 debug('debug mode activated');
 288                         } else {
 289                                 document.getElementById('debug_output').style.display = 'none';
 290                         }
 291
 292                         debug_mode_enabled = !debug_mode_enabled;
 293                 }
 294
 295                 if (keycode == 190 && shift_key) { // >
 296                         viewFeedGoPage(1);
 297                 }
 298
 299                 if (keycode == 188 && shift_key) { // <
 300                         viewFeedGoPage(-1);
 301                 }
 302
 303                 if (keycode == 191 && shift_key) { // ?
 304                         viewFeedGoPage(0);
 305                 }
 306
 307                 if (keycode == 69 && shift_key) { // e
 308                         return editFeedDlg(getActiveFeedId());
 309                 }
 310
 311                 if (keycode == 70 && shift_key) { // f
 312                         if (getActiveFeedId()) {
 313                                 return catchupCurrentFeed();
 314                         }
 315                 }
 316
 317                 if (keycode == 80 && shift_key) { // p
 318                         if (getActiveFeedId()) {
 319                                 return catchupPage();
 320                         }
 321                 }
 322
 323                 if (keycode == 86) { // v
 324                         if (getActiveArticleId()) {
 325                                 openArticleInNewWindow(getActiveArticleId());
 326                         }
 327                 }
 328
 329                 if (keycode == 84) { // t
 330
 331                         var id = getActiveArticleId();
 332
 333                         if (id) {
 334
 335                                 var cb = document.getElementById("RCHK-" + id);
 336
 337                                 if (cb) {
 338                                         cb.checked = !cb.checked;
 339                                         toggleSelectRowById(cb, "RROW-" + id);
 340                                 }
 341                         }
 342                 }
 343
 344                 if (keycode == 67) { // c
 345                         var id = getActiveArticleId();
 346
 347                         if (id) {
 348                                 toggleUnread(id, 0);
 349                         }
 350                 }
 351
 352                 if (keycode == 67 && shift_key) { // c
 353                         if (typeof collapse_feedlist != 'undefined') {
 354                                 return collapse_feedlist();
 355                         }
 356                 }
 357
 358                 if (keycode == 81 && shift_key) { // shift + q
 359                         if (typeof catchupAllFeeds != 'undefined') {
 360                                 return catchupAllFeeds();
 361                         }
 362                 }
 363
 364                 if (keycode == 73 && shift_key) { // shift + i
 365                         if (document.getElementById("subtoolbar_search")) {
 366                                 if (Element.visible("subtoolbar_search")) {
 367                                         Element.hide("subtoolbar_search");
 368                                         Element.show("subtoolbar_ftitle");
 369                                         setTimeout("Element.focus('subtoolbar_search_box')", 100);
 370                                 } else {
 371                                         Element.show("subtoolbar_search");
 372                                         Element.hide("subtoolbar_ftitle");
 373                                 }
 374                         }
 375                 }
 376
 377                 if (typeof localHotkeyHandler != 'undefined') {
 378                         try {
 379                                 return localHotkeyHandler(e);
 380                         } catch (e) {
 381                                 exception_error("hotkey_handler, local:", e);
 382                         }
 383                 }
 384
 385                 debug("KP=" + keycode);
 386         } catch (e) {
 387                 exception_error("hotkey_handler", e);
 388         }
 389 }
 390
 391 function cleanSelectedList(element) {
 392         var content = document.getElementById(element);
 393
 394         if (!document.getElementById("feedCatHolder")) {
 395                 for (i = 0; i < content.childNodes.length; i++) {
 396                         var child = content.childNodes[i];
 397                         try {
 398                                 child.className = child.className.replace("Selected", "");
 399                         } catch (e) {
 400                                 //
 401                         }
 402                 }
 403         } else {
 404                 for (i = 0; i < content.childNodes.length; i++) {
 405                         var child = content.childNodes[i];
 406                         if (child.id == "feedCatHolder") {
 407                                 debug(child.id);
 408                                 var fcat = child.lastChild;
 409                                 for (j = 0; j < fcat.childNodes.length; j++) {
 410                                         var feed = fcat.childNodes[j];
 411                                         feed.className = feed.className.replace("Selected", "");
 412                                 }
 413                         }
 414                 }
 415         }
 416 }
 417
 418
 419 function cleanSelected(element) {
 420         var content = document.getElementById(element);
 421
 422         for (i = 0; i < content.rows.length; i++) {
 423                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 424         }
 425 }
 426
 427 function getVisibleUnreadHeadlines() {
 428         var content = document.getElementById("headlinesList");
 429
 430         var rows = new Array();
 431
 432         for (i = 0; i < content.rows.length; i++) {
 433                 var row_id = content.rows[i].id.replace("RROW-", "");
 434                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 435                                 rows.push(row_id);
 436                 }
 437         }
 438         return rows;
 439 }
 440
 441 function getVisibleHeadlineIds() {
 442
 443         var content = document.getElementById("headlinesList");
 444
 445         var rows = new Array();
 446
 447         for (i = 0; i < content.rows.length; i++) {
 448                 var row_id = content.rows[i].id.replace("RROW-", "");
 449                 if (row_id.length > 0) {
 450                                 rows.push(row_id);
 451                 }
 452         }
 453         return rows;
 454 }
 455
 456 function getFirstVisibleHeadlineId() {
 457         var rows = getVisibleHeadlineIds();
 458         return rows[0];
 459 }
 460
 461 function getLastVisibleHeadlineId() {
 462         var rows = getVisibleHeadlineIds();
 463         return rows[rows.length-1];
 464 }
 465
 466 function markHeadline(id) {
 467         var row = document.getElementById("RROW-" + id);
 468         if (row) {
 469                 var is_active = false;
 470
 471                 if (row.className.match("Active")) {
 472                         is_active = true;
 473                 }
 474                 row.className = row.className.replace("Selected", "");
 475                 row.className = row.className.replace("Active", "");
 476                 row.className = row.className.replace("Insensitive", "");
 477
 478                 if (is_active) {
 479                         row.className = row.className = "Active";
 480                 }
 481
 482                 var check = document.getElementById("RCHK-" + id);
 483
 484                 if (check) {
 485                         check.checked = true;
 486                 }
 487
 488                 row.className = row.className + "Selected";
 489
 490         }
 491 }
 492
 493 function getFeedIds() {
 494         var content = document.getElementById("feedsList");
 495
 496         var rows = new Array();
 497
 498         for (i = 0; i < content.rows.length; i++) {
 499                 var id = content.rows[i].id.replace("FEEDR-", "");
 500                 if (id.length > 0) {
 501                         rows.push(id);
 502                 }
 503         }
 504
 505         return rows;
 506 }
 507
 508 function setCookie(name, value, lifetime, path, domain, secure) {
 509
 510         var d = false;
 511
 512         if (lifetime) {
 513                 d = new Date();
 514                 d.setTime(d.getTime() + (lifetime * 1000));
 515         }
 516
 517         debug("setCookie: " + name + " => " + value + ": " + d);
 518
 519         int_setCookie(name, value, d, path, domain, secure);
 520
 521 }
 522
 523 function int_setCookie(name, value, expires, path, domain, secure) {
 524         document.cookie= name + "=" + escape(value) +
 525                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 526                 ((path) ? "; path=" + path : "") +
 527                 ((domain) ? "; domain=" + domain : "") +
 528                 ((secure) ? "; secure" : "");
 529 }
 530
 531 function delCookie(name, path, domain) {
 532         if (getCookie(name)) {
 533                 document.cookie = name + "=" +
 534                 ((path) ? ";path=" + path : "") +
 535                 ((domain) ? ";domain=" + domain : "" ) +
 536                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 537         }
 538 }
 539
 540
 541 function getCookie(name) {
 542
 543         var dc = document.cookie;
 544         var prefix = name + "=";
 545         var begin = dc.indexOf("; " + prefix);
 546         if (begin == -1) {
 547             begin = dc.indexOf(prefix);
 548             if (begin != 0) return null;
 549         }
 550         else {
 551             begin += 2;
 552         }
 553         var end = document.cookie.indexOf(";", begin);
 554         if (end == -1) {
 555             end = dc.length;
 556         }
 557         return unescape(dc.substring(begin + prefix.length, end));
 558 }
 559
 560 function disableContainerChildren(id, disable, doc) {
 561
 562         if (!doc) doc = document;
 563
 564         var container = doc.getElementById(id);
 565
 566         if (!container) {
 567                 //alert("disableContainerChildren: element " + id + " not found");
 568                 return;
 569         }
 570
 571         for (var i = 0; i < container.childNodes.length; i++) {
 572                 var child = container.childNodes[i];
 573
 574                 try {
 575                         child.disabled = disable;
 576                 } catch (E) {
 577
 578                 }
 579
 580                 if (disable) {
 581                         if (child.className && child.className.match("button")) {
 582                                 child.className = "disabledButton";
 583                         }
 584                 } else {
 585                         if (child.className && child.className.match("disabledButton")) {
 586                                 child.className = "button";
 587                         }
 588                 }
 589         }
 590
 591 }
 592
 593 function gotoPreferences() {
 594         document.location.href = "prefs.php";
 595 }
 596
 597 function gotoMain() {
 598         document.location.href = "tt-rss.php";
 599 }
 600
 601 function gotoExportOpml() {
 602         document.location.href = "opml.php?op=Export";
 603 }
 604
 605 function getActiveFeedId() {
 606 //      return getCookie("ttrss_vf_actfeed");
 607         try {
 608                 debug("gAFID: " + active_feed_id);
 609                 return active_feed_id;
 610         } catch (e) {
 611                 exception_error("getActiveFeedId", e);
 612         }
 613 }
 614
 615 function activeFeedIsCat() {
 616         return active_feed_is_cat;
 617 }
 618
 619 function setActiveFeedId(id) {
 620 //      return setCookie("ttrss_vf_actfeed", id);
 621         try {
 622                 debug("sAFID(" + id + ")");
 623                 active_feed_id = id;
 624         } catch (e) {
 625                 exception_error("setActiveFeedId", e);
 626         }
 627 }
 628
 629 function parse_counters(reply, scheduled_call) {
 630         try {
 631
 632                 var feeds_found = 0;
 633
 634                 var elems = reply.getElementsByTagName("counter");
 635
 636                 for (var l = 0; l < elems.length; l++) {
 637
 638                         var id = elems[l].getAttribute("id");
 639                         var t = elems[l].getAttribute("type");
 640                         var ctr = elems[l].getAttribute("counter");
 641                         var error = elems[l].getAttribute("error");
 642                         var has_img = elems[l].getAttribute("hi");
 643                         var updated = elems[l].getAttribute("updated");
 644                         var title = elems[l].getAttribute("title");
 645
 646                         if (id == "global-unread") {
 647                                 global_unread = ctr;
 648                                 updateTitle();
 649                                 continue;
 650                         }
 651
 652                         if (id == "subscribed-feeds") {
 653                                 feeds_found = ctr;
 654                                 continue;
 655                         }
 656
 657                         if (t == "category") {
 658                                 var catctr = document.getElementById("FCATCTR-" + id);
 659                                 if (catctr) {
 660                                         catctr.innerHTML = "(" + ctr + ")";
 661                                         if (ctr > 0) {
 662                                                 catctr.className = "catCtrHasUnread";
 663                                         } else {
 664                                                 catctr.className = "catCtrNoUnread";
 665                                         }
 666                                 }
 667                                 continue;
 668                         }
 669
 670                         var feedctr = document.getElementById("FEEDCTR-" + id);
 671                         var feedu = document.getElementById("FEEDU-" + id);
 672                         var feedr = document.getElementById("FEEDR-" + id);
 673                         var feed_img = document.getElementById("FIMG-" + id);
 674                         var feedlink = document.getElementById("FEEDL-" + id);
 675                         var feedupd = document.getElementById("FLUPD-" + id);
 676
 677                         if (updated && feedlink) {
 678                                 if (error) {
 679                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 680                                 } else {
 681                                         feedlink.title = "Updated: " + updated;
 682                                 }
 683                         }
 684
 685                         if (updated && feedupd) {
 686                                 if (error) {
 687                                         feedupd.innerHTML = updated + " (Error)";
 688                                 } else {
 689                                         feedupd.innerHTML = updated;
 690                                 }
 691                         }
 692
 693                         if (has_img && feed_img && !is_msie()) {
 694                                 if (!feed_img.src.match(id + ".ico")) {
 695                                         feed_img.src = getInitParam("icons_location") + "/" + id + ".ico";
 696                                 }
 697                         }
 698
 699                         if (feedlink && title) {
 700                                 feedlink.innerHTML = title;
 701                         }
 702
 703                         if (feedctr && feedu && feedr) {
 704
 705                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 706                                         viewCurrentFeed();
 707                                 }
 708
 709                                 var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 710
 711                                 feedu.innerHTML = ctr;
 712
 713                                 if (error) {
 714                                         feedr.className = feedr.className.replace("feed", "error");
 715                                 } else if (id > 0) {
 716                                         feedr.className = feedr.className.replace("error", "feed");
 717                                 }
 718
 719                                 if (ctr > 0) {
 720                                         feedctr.className = "odd";
 721                                         if (!feedr.className.match("Unread")) {
 722                                                 var is_selected = feedr.className.match("Selected");
 723
 724                                                 feedr.className = feedr.className.replace("Selected", "");
 725                                                 feedr.className = feedr.className.replace("Unread", "");
 726
 727                                                 feedr.className = feedr.className + "Unread";
 728
 729                                                 if (is_selected) {
 730                                                         feedr.className = feedr.className + "Selected";
 731                                                 }
 732
 733                                         }
 734
 735                                         if (row_needs_hl) {
 736                                                 new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 737                                                         queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 738                                         }
 739                                 } else {
 740                                         feedctr.className = "invisible";
 741                                         feedr.className = feedr.className.replace("Unread", "");
 742                                 }
 743                         }
 744                 }
 745
 746                 hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 747
 748                 var feeds_stored = number_of_feeds;
 749
 750                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 751
 752                 if (feeds_stored != feeds_found) {
 753                         number_of_feeds = feeds_found;
 754
 755                         if (feeds_stored != 0 && feeds_found != 0) {
 756                                 debug("Subscribed feed number changed, refreshing feedlist");
 757                                 setTimeout('updateFeedList(false, false)', 50);
 758                         }
 759                 }
 760
 761         } catch (e) {
 762                 exception_error("parse_counters", e);
 763         }
 764 }
 765
 766 function parse_counters_reply(transport, scheduled_call) {
 767
 768         if (!transport.responseXML) {
 769                 notify_error("Backend did not return valid XML", true);
 770                 return;
 771         }
 772
 773         var reply = transport.responseXML.firstChild;
 774
 775         if (!reply) {
 776                 notify_error("Backend did not return expected XML object", true);
 777                 updateTitle("");
 778                 return;
 779         }
 780
 781         var error_code = false;
 782         var error_msg = false;
 783
 784         if (reply.firstChild) {
 785                 error_code = reply.firstChild.getAttribute("error-code");
 786                 error_msg = reply.firstChild.getAttribute("error-msg");
 787         }
 788
 789         if (!error_code) {
 790                 error_code = reply.getAttribute("error-code");
 791                 error_msg = reply.getAttribute("error-msg");
 792         }
 793
 794         if (error_code && error_code != 0) {
 795                 debug("refetch_callback: got error code " + error_code);
 796                 return fatalError(error_code, error_msg);
 797         }
 798
 799         var counters = reply.getElementsByTagName("counters")[0];
 800
 801         parse_counters(counters, scheduled_call);
 802
 803         var runtime_info = reply.getElementsByTagName("runtime-info")[0];
 804
 805         parse_runtime_info(runtime_info);
 806
 807         if (getInitParam("feeds_sort_by_unread") == 1) {
 808                         resort_feedlist();
 809         }
 810
 811         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 812
 813 }
 814
 815 function all_counters_callback2(transport) {
 816         try {
 817                 debug("<b>all_counters_callback2 IN: " + transport + "</b>");
 818                 parse_counters_reply(transport);
 819                 debug("<b>all_counters_callback2 OUT: " + transport + "</b>");
 820
 821         } catch (e) {
 822                 exception_error("all_counters_callback2", e);
 823         }
 824 }
 825
 826 function get_feed_unread(id) {
 827         try {
 828                 return parseInt(document.getElementById("FEEDU-" + id).innerHTML);
 829         } catch (e) {
 830                 exception_error("get_feed_unread", e, true);
 831                 return -1;
 832         }
 833 }
 834
 835 function get_feed_entry_unread(doc, elem) {
 836
 837         var id = elem.id.replace("FEEDR-", "");
 838
 839         if (id <= 0) {
 840                 return -1;
 841         }
 842
 843         try {
 844                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 845         } catch (e) {
 846                 return -1;
 847         }
 848 }
 849
 850 function resort_category(doc, node) {
 851         debug("resort_category: " + node);
 852
 853         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 854                 for (i = 0; i < node.childNodes.length; i++) {
 855                         if (node.childNodes[i].nodeName != "LI") { continue; }
 856
 857                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 858                                 continue;
 859                         }
 860
 861                         for (j = i+1; j < node.childNodes.length; j++) {
 862                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 863
 864                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 865                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 866
 867                                 if (cur_val > tmp_val) {
 868                                         tempnode_i = node.childNodes[i].cloneNode(true);
 869                                         tempnode_j = node.childNodes[j].cloneNode(true);
 870                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 871                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 872                                 }
 873                         }
 874
 875                 }
 876         }
 877
 878 }
 879
 880 function resort_feedlist() {
 881         debug("resort_feedlist");
 882
 883         var fd = document;
 884
 885         if (fd.getElementById("feedCatHolder")) {
 886
 887                 var feeds = fd.getElementById("feedList");
 888                 var child = feeds.firstChild;
 889
 890                 while (child) {
 891
 892                         if (child.id == "feedCatHolder") {
 893                                 resort_category(fd, child.firstChild);
 894                         }
 895
 896                         child = child.nextSibling;
 897                 }
 898
 899         } else {
 900                 resort_category(fd, fd.getElementById("feedList"));
 901         }
 902 }
 903
 904 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 905   * * @author Sundar Dorai-Raj
 906   * * Email: sdoraira@vt.edu
 907   * * This program is free software; you can redistribute it and/or
 908   * * modify it under the terms of the GNU General Public License
 909   * * as published by the Free Software Foundation; either version 2
 910   * * of the License, or (at your option) any later version,
 911   * * provided that any use properly credits the author.
 912   * * This program is distributed in the hope that it will be useful,
 913   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 914   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 915   * * GNU General Public License for more details at http://www.gnu.org * * */
 916
 917   var numbers=".0123456789";
 918   function isNumeric(x) {
 919     // is x a String or a character?
 920     if(x.length>1) {
 921       // remove negative sign
 922       x=Math.abs(x)+"";
 923       for(j=0;j<x.length;j++) {
 924         // call isNumeric recursively for each character
 925         number=isNumeric(x.substring(j,j+1));
 926         if(!number) return number;
 927       }
 928       return number;
 929     }
 930     else {
 931       // if x is number return true
 932       if(numbers.indexOf(x)>=0) return true;
 933       return false;
 934     }
 935   }
 936
 937
 938 function hideOrShowFeeds(doc, hide) {
 939
 940         debug("hideOrShowFeeds: " + doc + ", " + hide);
 941
 942         var fd = document;
 943
 944         var list = fd.getElementById("feedList");
 945
 946         if (fd.getElementById("feedCatHolder")) {
 947
 948                 var feeds = fd.getElementById("feedList");
 949                 var child = feeds.firstChild;
 950
 951                 while (child) {
 952
 953                         if (child.id == "feedCatHolder") {
 954                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 955                         }
 956
 957                         child = child.nextSibling;
 958                 }
 959
 960         } else {
 961                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 962         }
 963 }
 964
 965 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 966
 967 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 968
 969         var cat_unread = 0;
 970
 971         if (!node) {
 972                 debug("hideOrShowFeeds: passed node is null, aborting");
 973                 return;
 974         }
 975
 976 //      debug("cat: " + node.id);
 977
 978         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 979                 for (i = 0; i < node.childNodes.length; i++) {
 980                         if (node.childNodes[i].nodeName != "LI") { continue; }
 981
 982                         if (node.childNodes[i].style != undefined) {
 983
 984                                 var has_unread = (node.childNodes[i].className != "feed" &&
 985                                         node.childNodes[i].className != "label" &&
 986                                         !(!getInitParam("hide_read_shows_special") &&
 987                                                 node.childNodes[i].className == "virt") &&
 988                                         node.childNodes[i].className != "error" &&
 989                                         node.childNodes[i].className != "tag");
 990
 991 //                              debug(node.childNodes[i].id + " --> " + has_unread);
 992
 993                                 if (hide && !has_unread) {
 994                                         //node.childNodes[i].style.display = "none";
 995                                         var id = node.childNodes[i].id;
 996                                         Effect.Fade(node.childNodes[i], {duration : 0.3,
 997                                                 queue: { position: 'end', scope: 'FFADE-' + id, limit: 1 }});
 998                                 }
 999
1000                                 if (!hide) {
1001                                         node.childNodes[i].style.display = "list-item";
1002                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
1003                                 }
1004
1005                                 if (has_unread) {
1006                                         node.childNodes[i].style.display = "list-item";
1007                                         cat_unread++;
1008                                         //Effect.Appear(node.childNodes[i], {duration : 0.3});
1009                                         //Effect.Highlight(node.childNodes[i]);
1010                                 }
1011                         }
1012                 }
1013         }
1014
1015 //      debug("end cat: " + node.id + " unread " + cat_unread);
1016
1017         if (cat_unread == 0) {
1018                 if (cat_node.style == undefined) {
1019                         debug("ERROR: supplied cat_node " + cat_node +
1020                                 " has no styles. WTF?");
1021                         return;
1022                 }
1023                 if (hide) {
1024                         //cat_node.style.display = "none";
1025                         Effect.Fade(cat_node, {duration : 0.3,
1026                                 queue: { position: 'end', scope: 'CFADE-' + node.id, limit: 1 }});
1027                 } else {
1028                         cat_node.style.display = "list-item";
1029                 }
1030         } else {
1031                 try {
1032                         cat_node.style.display = "list-item";
1033                 } catch (e) {
1034                         debug(e);
1035                 }
1036         }
1037
1038 //      debug("unread for category: " + cat_unread);
1039 }
1040
1041 function selectTableRow(r, do_select) {
1042         r.className = r.className.replace("Selected", "");
1043
1044         if (do_select) {
1045                 r.className = r.className + "Selected";
1046         }
1047 }
1048
1049 function selectTableRowById(elem_id, check_id, do_select) {
1050
1051         try {
1052
1053                 var row = document.getElementById(elem_id);
1054
1055                 if (row) {
1056                         selectTableRow(row, do_select);
1057                 }
1058
1059                 var check = document.getElementById(check_id);
1060
1061                 if (check) {
1062                         check.checked = do_select;
1063                 }
1064         } catch (e) {
1065                 exception_error("selectTableRowById", e);
1066         }
1067 }
1068
1069 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
1070         classcheck, reset_others) {
1071
1072         var content = document.getElementById(content_id);
1073
1074         if (!content) {
1075                 alert("[selectTableRows] Element " + content_id + " not found.");
1076                 return;
1077         }
1078
1079         for (i = 0; i < content.rows.length; i++) {
1080                 if (Element.visible(content.rows[i])) {
1081                         if (!classcheck || content.rows[i].className.match(classcheck)) {
1082
1083                                 if (content.rows[i].id.match(prefix)) {
1084                                         selectTableRow(content.rows[i], do_select);
1085
1086                                         var row_id = content.rows[i].id.replace(prefix, "");
1087                                         var check = document.getElementById(check_prefix + row_id);
1088
1089                                         if (check) {
1090                                                 check.checked = do_select;
1091                                         }
1092                                 } else if (reset_others) {
1093                                         selectTableRow(content.rows[i], false);
1094
1095                                         var row_id = content.rows[i].id.replace(prefix, "");
1096                                         var check = document.getElementById(check_prefix + row_id);
1097
1098                                         if (check) {
1099                                                 check.checked = false;
1100                                         }
1101
1102                                 }
1103                         } else if (reset_others) {
1104                                 selectTableRow(content.rows[i], false);
1105
1106                                 var row_id = content.rows[i].id.replace(prefix, "");
1107                                 var check = document.getElementById(check_prefix + row_id);
1108
1109                                 if (check) {
1110                                         check.checked = false;
1111                                 }
1112
1113                         }
1114                 }
1115         }
1116 }
1117
1118 function getSelectedTableRowIds(content_id, prefix) {
1119
1120         var content = document.getElementById(content_id);
1121
1122         if (!content) {
1123                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
1124                 return;
1125         }
1126
1127         var sel_rows = new Array();
1128
1129         for (i = 0; i < content.rows.length; i++) {
1130                 if (content.rows[i].id.match(prefix) &&
1131                                 content.rows[i].className.match("Selected")) {
1132
1133                         var row_id = content.rows[i].id.replace(prefix + "-", "");
1134                         sel_rows.push(row_id);
1135                 }
1136         }
1137
1138         return sel_rows;
1139
1140 }
1141
1142 function toggleSelectRowById(sender, id) {
1143         var row = document.getElementById(id);
1144
1145         if (sender.checked) {
1146                 if (!row.className.match("Selected")) {
1147                         row.className = row.className + "Selected";
1148                 }
1149         } else {
1150                 if (row.className.match("Selected")) {
1151                         row.className = row.className.replace("Selected", "");
1152                 }
1153         }
1154 }
1155
1156 function toggleSelectListRow(sender) {
1157         var parent_row = sender.parentNode;
1158
1159         if (sender.checked) {
1160                 if (!parent_row.className.match("Selected")) {
1161                         parent_row.className = parent_row.className + "Selected";
1162                 }
1163         } else {
1164                 if (parent_row.className.match("Selected")) {
1165                         parent_row.className = parent_row.className.replace("Selected", "");
1166                 }
1167         }
1168 }
1169
1170 function tSR(sender) {
1171         return toggleSelectRow(sender);
1172 }
1173
1174 function toggleSelectRow(sender) {
1175         var parent_row = sender.parentNode.parentNode;
1176
1177         if (sender.checked) {
1178                 if (!parent_row.className.match("Selected")) {
1179                         parent_row.className = parent_row.className + "Selected";
1180                 }
1181         } else {
1182                 if (parent_row.className.match("Selected")) {
1183                         parent_row.className = parent_row.className.replace("Selected", "");
1184                 }
1185         }
1186 }
1187
1188 function getRelativeFeedId(list, id, direction, unread_only) {
1189         var rows = list.getElementsByTagName("LI");
1190         var feeds = new Array();
1191
1192         for (var i = 0; i < rows.length; i++) {
1193                 if (rows[i].id.match("FEEDR-")) {
1194
1195                         if (rows[i].id == "FEEDR-" + id || (Element.visible(rows[i]) && Element.visible(rows[i].parentNode))) {
1196
1197                                 if (!unread_only ||
1198                                                 (rows[i].className.match("Unread") || rows[i].id == "FEEDR-" + id)) {
1199                                         feeds.push(rows[i].id.replace("FEEDR-", ""));
1200                                 }
1201                         }
1202                 }
1203         }
1204
1205         if (!id) {
1206                 if (direction == "next") {
1207                         return feeds.shift();
1208                 } else {
1209                         return feeds.pop();
1210                 }
1211         } else {
1212                 if (direction == "next") {
1213                         var idx = feeds.indexOf(id);
1214                         if (idx != -1 && idx < feeds.length) {
1215                                 return feeds[idx+1];
1216                         } else {
1217                                 return getRelativeFeedId(list, false, direction, unread_only);
1218                         }
1219                 } else {
1220                         var idx = feeds.indexOf(id);
1221                         if (idx > 0) {
1222                                 return feeds[idx-1];
1223                         } else {
1224                                 return getRelativeFeedId(list, false, direction, unread_only);
1225                         }
1226                 }
1227
1228         }
1229 }
1230
1231 function showBlockElement(id, h_id) {
1232         var elem = document.getElementById(id);
1233
1234         if (elem) {
1235                 elem.style.display = "block";
1236
1237                 if (h_id) {
1238                         elem = document.getElementById(h_id);
1239                         if (elem) {
1240                                 elem.style.display = "none";
1241                         }
1242                 }
1243         } else {
1244                 alert("[showBlockElement] can't find element with id " + id);
1245         }
1246 }
1247
1248 function appearBlockElement_afh(effect) {
1249
1250 }
1251
1252 function checkboxToggleElement(elem, id) {
1253         if (elem.checked) {
1254                 Effect.SlideDown(id, {duration : 0.5});
1255         } else {
1256                 Effect.SlideUp(id, {duration : 0.5});
1257         }
1258 }
1259
1260 function appearBlockElement(id, h_id) {
1261
1262         try {
1263                 if (h_id) {
1264                         Effect.Fade(h_id);
1265                 }
1266                 Effect.SlideDown(id, {duration : 1.0, afterFinish: appearBlockElement_afh});
1267         } catch (e) {
1268                 exception_error("appearBlockElement", e);
1269         }
1270
1271 }
1272
1273 function hideParentElement(e) {
1274         e.parentNode.style.display = "none";
1275 }
1276
1277 function dropboxSelect(e, v) {
1278         for (i = 0; i < e.length; i++) {
1279                 if (e[i].value == v) {
1280                         e.selectedIndex = i;
1281                         break;
1282                 }
1283         }
1284 }
1285
1286 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1287 // bugfixed just a little bit :-)
1288 function getURLParam(strParamName){
1289   var strReturn = "";
1290   var strHref = window.location.href;
1291
1292   if (strHref.indexOf("#") == strHref.length-1) {
1293                 strHref = strHref.substring(0, strHref.length-1);
1294   }
1295
1296   if ( strHref.indexOf("?") > -1 ){
1297     var strQueryString = strHref.substr(strHref.indexOf("?"));
1298     var aQueryString = strQueryString.split("&");
1299     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1300       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1301         var aParam = aQueryString[iParam].split("=");
1302         strReturn = aParam[1];
1303         break;
1304       }
1305     }
1306   }
1307   return strReturn;
1308 }
1309
1310 function leading_zero(p) {
1311         var s = String(p);
1312         if (s.length == 1) s = "0" + s;
1313         return s;
1314 }
1315
1316 function closeInfoBox(cleanup) {
1317
1318         if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1319                 var overlay = document.getElementById("dialog_overlay");
1320                 if (overlay) {
1321                         overlay.style.display = "none";
1322                 }
1323         }
1324
1325         var box = document.getElementById('infoBox');
1326         var shadow = document.getElementById('infoBoxShadow');
1327
1328         if (shadow) {
1329                 shadow.style.display = "none";
1330         } else if (box) {
1331                 box.style.display = "none";
1332         }
1333
1334         if (cleanup) box.innerHTML = "&nbsp;";
1335
1336         enableHotkeys();
1337
1338         return false;
1339 }
1340
1341
1342 function displayDlg(id, param) {
1343
1344         notify_progress("Loading, please wait...", true);
1345
1346         disableHotkeys();
1347
1348         var query = "backend.php?op=dlg&id=" +
1349                 param_escape(id) + "&param=" + param_escape(param);
1350
1351         new Ajax.Request(query, {
1352                 onComplete: function (transport) {
1353                         infobox_callback2(transport);
1354                 } });
1355
1356         return false;
1357 }
1358
1359 function infobox_submit_callback2(transport) {
1360         closeInfoBox();
1361
1362         try {
1363                 // called from prefs, reload tab
1364                 if (active_tab) {
1365                         selectTab(active_tab, false);
1366                 }
1367         } catch (e) { }
1368
1369         if (transport.responseText) {
1370                 notify_info(transport.responseText);
1371         }
1372 }
1373
1374 function infobox_callback2(transport) {
1375         try {
1376
1377                 debug("infobox_callback2");
1378
1379                 if (!is_msie() && !getInitParam("infobox_disable_overlay")) {
1380                         var overlay = document.getElementById("dialog_overlay");
1381                         if (overlay) {
1382                                 overlay.style.display = "block";
1383                         }
1384                 }
1385
1386                 var box = document.getElementById('infoBox');
1387                 var shadow = document.getElementById('infoBoxShadow');
1388                 if (box) {
1389
1390 /*                              if (!is_safari()) {
1391                                 new Draggable(shadow);
1392                         } */
1393
1394                         box.innerHTML=transport.responseText;
1395                         if (shadow) {
1396                                 shadow.style.display = "block";
1397                         } else {
1398                                 box.style.display = "block";
1399                         }
1400                 }
1401
1402                 /* FIXME this needs to be moved out somewhere */
1403
1404                 if (document.getElementById("tags_choices")) {
1405                         new Ajax.Autocompleter('tags_str', 'tags_choices',
1406                                 "backend.php?op=rpc&subop=completeTags",
1407                                 { tokens: ',', paramName: "search" });
1408                 }
1409
1410                 notify("");
1411         } catch (e) {
1412                 exception_error("infobox_callback2", e);
1413         }
1414 }
1415
1416 function createFilter() {
1417
1418         var form = document.forms['filter_add_form'];
1419         var reg_exp = form.reg_exp.value;
1420
1421         if (reg_exp == "") {
1422                 alert(__("Can't add filter: nothing to match on."));
1423                 return false;
1424         }
1425
1426         var query = Form.serialize("filter_add_form");
1427
1428         new Ajax.Request("backend.php?" + query, {
1429                 onComplete: function (transport) {
1430                         infobox_submit_callback2(transport);
1431                 } });
1432
1433         return true;
1434 }
1435
1436 function toggleSubmitNotEmpty(e, submit_id) {
1437         try {
1438                 document.getElementById(submit_id).disabled = (e.value == "")
1439         } catch (e) {
1440                 exception_error("toggleSubmitNotEmpty", e);
1441         }
1442 }
1443
1444 function isValidURL(s) {
1445         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
1446 }
1447
1448 function subscribeToFeed() {
1449
1450         var form = document.forms['feed_add_form'];
1451         var feed_url = form.feed_url.value;
1452
1453         if (feed_url == "") {
1454                 alert(__("Can't subscribe: no feed URL given."));
1455                 return false;
1456         }
1457
1458         notify_progress(__("Subscribing to feed..."), true);
1459
1460         closeInfoBox();
1461
1462         var feeds_doc = document;
1463
1464 //      feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1465
1466         var query = Form.serialize("feed_add_form");
1467
1468         debug("subscribe q: " + query);
1469
1470         new Ajax.Request("backend.php", {
1471                 parameters: query,
1472                 onComplete: function(transport) {
1473                         dlg_frefresh_callback(transport);
1474                 } });
1475
1476         return false;
1477 }
1478
1479 function filterCR(e, f)
1480 {
1481      var key;
1482
1483      if(window.event)
1484           key = window.event.keyCode;     //IE
1485      else
1486           key = e.which;     //firefox
1487
1488         if (key == 13) {
1489                 if (typeof f != 'undefined') {
1490                         f();
1491                         return false;
1492                 } else {
1493                         return false;
1494                 }
1495         } else {
1496                 return true;
1497         }
1498 }
1499
1500 function getMainContext() {
1501         return this.window;
1502 }
1503
1504 function getFeedsContext() {
1505         return this.window;
1506 }
1507
1508 function getContentContext() {
1509         return this.window;
1510 }
1511
1512 function getHeadlinesContext() {
1513         return this.window;
1514 }
1515
1516 var debug_last_class = "even";
1517
1518 function debug(msg) {
1519
1520         if (debug_last_class == "even") {
1521                 debug_last_class = "odd";
1522         } else {
1523                 debug_last_class = "even";
1524         }
1525
1526         var c = document.getElementById('debug_output');
1527         if (c && c.style.display == "block") {
1528                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1529                         c.removeChild(c.lastChild);
1530                 }
1531
1532                 var d = new Date();
1533                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1534                         ":" + leading_zero(d.getSeconds());
1535                 c.innerHTML = "<li class=\"" + debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1536                         msg + "</li>" + c.innerHTML;
1537         }
1538 }
1539
1540 function getInitParam(key) {
1541         return init_params[key];
1542 }
1543
1544 function storeInitParam(key, value) {
1545         debug("<b>storeInitParam is OBSOLETE: " + key + " => " + value + "</b>");
1546         init_params[key] = value;
1547 }
1548
1549 function fatalError(code, message) {
1550         try {
1551
1552                 if (code == 6) {
1553                         window.location.href = "tt-rss.php";
1554                 } else if (code == 5) {
1555                         window.location.href = "update.php";
1556                 } else {
1557                         var fe = document.getElementById("fatal_error");
1558                         var fc = document.getElementById("fatal_error_msg");
1559
1560                         if (message == "") message = "Unknown error";
1561
1562                         fc.innerHTML = "<img src='images/sign_excl.gif'> " + message + " (Code " + code + ")";
1563
1564                         fe.style.display = "block";
1565                 }
1566
1567         } catch (e) {
1568                 exception_error("fatalError", e);
1569         }
1570 }
1571
1572 function getFeedName(id, is_cat) {
1573         var d = getFeedsContext().document;
1574
1575         var e;
1576
1577         if (is_cat) {
1578                 e = d.getElementById("FCATN-" + id);
1579         } else {
1580                 e = d.getElementById("FEEDN-" + id);
1581         }
1582         if (e) {
1583                 return e.innerHTML.stripTags();
1584         } else {
1585                 return null;
1586         }
1587 }
1588
1589 function viewContentUrl(url) {
1590         getContentContext().location = url;
1591 }
1592
1593 function filterDlgCheckAction(sender) {
1594
1595         try {
1596
1597                 var action = sender[sender.selectedIndex].value;
1598
1599                 var form = document.forms["filter_add_form"];
1600
1601                 if (!form) {
1602                         form = document.forms["filter_edit_form"];
1603                 }
1604
1605                 if (!form) {
1606                         debug("filterDlgCheckAction: can't find form!");
1607                         return;
1608                 }
1609
1610                 var action_param = form.action_param;
1611
1612                 if (!action_param) {
1613                         debug("filterDlgCheckAction: can't find action param!");
1614                         return;
1615                 }
1616
1617                 // if selected action supports parameters, enable params field
1618                 if (action == 4 || action == 6) {
1619                         action_param.disabled = false;
1620                 } else {
1621                         action_param.disabled = true;
1622                 }
1623
1624         } catch (e) {
1625                 exception_error(e, "filterDlgCheckAction");
1626         }
1627
1628 }
1629
1630 function explainError(code) {
1631         return displayDlg("explainError", code);
1632 }
1633
1634 // this only searches loaded headlines list, not in CDM
1635 function getRelativePostIds(id) {
1636
1637         debug("getRelativePostIds: " + id);
1638
1639         var ids = new Array();
1640         var container = document.getElementById("headlinesList");
1641
1642         if (container) {
1643                 var rows = container.rows;
1644
1645                 for (var i = 0; i < rows.length; i++) {
1646                         var r_id = rows[i].id.replace("RROW-", "");
1647
1648                         if (r_id == id) {
1649                                 if (i > 0) ids.push(rows[i-1].id.replace("RROW-", ""));
1650                                 if (i > 1) ids.push(rows[i-2].id.replace("RROW-", ""));
1651                                 if (i > 2) ids.push(rows[i-3].id.replace("RROW-", ""));
1652
1653                                 if (i < rows.length-1) ids.push(rows[i+1].id.replace("RROW-", ""));
1654                                 if (i < rows.length-2) ids.push(rows[i+2].id.replace("RROW-", ""));
1655                                 if (i < rows.length-3) ids.push(rows[i+3].id.replace("RROW-", ""));
1656
1657                                 return ids;
1658                         }
1659                 }
1660         }
1661
1662         return false;
1663 }
1664
1665 function openArticleInNewWindow(id) {
1666         try {
1667                 debug("openArticleInNewWindow: " + id);
1668
1669                 var query = "backend.php?op=rpc&subop=getArticleLink&id=" + id;
1670
1671                 debug(query);
1672
1673                 new Ajax.Request(query, {
1674                         onComplete: function(transport) {
1675                                 open_article_callback(transport);
1676                         } });
1677
1678
1679         } catch (e) {
1680                 exception_error("openArticleInNewWindow", e);
1681         }
1682 }
1683
1684 /* http://textsnippets.com/posts/show/835 */
1685
1686 Position.GetWindowSize = function(w) {
1687         w = w ? w : window;
1688         var width = w.innerWidth || (w.document.documentElement.clientWidth || w.document.body.clientWidth);
1689         var height = w.innerHeight || (w.document.documentElement.clientHeight || w.document.body.clientHeight);
1690         return [width, height]
1691 }
1692
1693 /* http://textsnippets.com/posts/show/836 */
1694
1695 Position.Center = function(element, parent) {
1696         var w, h, pw, ph;
1697         var d = Element.getDimensions(element);
1698         w = d.width;
1699         h = d.height;
1700         Position.prepare();
1701         if (!parent) {
1702                 var ws = Position.GetWindowSize();
1703                 pw = ws[0];
1704                 ph = ws[1];
1705         } else {
1706                 pw = parent.offsetWidth;
1707                 ph = parent.offsetHeight;
1708         }
1709         element.style.top = (ph/2) - (h/2) -  Position.deltaY + "px";
1710         element.style.left = (pw/2) - (w/2) -  Position.deltaX + "px";
1711 }
1712
1713
1714 function labeltest_callback(transport) {
1715         try {
1716                 var container = document.getElementById('label_test_result');
1717
1718                 container.innerHTML = transport.responseText;
1719                 if (!Element.visible(container)) {
1720                         Effect.SlideDown(container, { duration : 0.5 });
1721                 }
1722
1723                 notify("");
1724         } catch (e) {
1725                 exception_error("labeltest_callback", e);
1726         }
1727 }
1728
1729 function labelTest() {
1730
1731         try {
1732                 var container = document.getElementById('label_test_result');
1733
1734                 var form = document.forms['label_edit_form'];
1735
1736                 var sql_exp = form.sql_exp.value;
1737                 var description = form.description.value;
1738
1739                 notify_progress("Loading, please wait...");
1740
1741                 var query = "backend.php?op=pref-labels&subop=test&expr=" +
1742                         param_escape(sql_exp) + "&descr=" + param_escape(description);
1743
1744                 new Ajax.Request(query, {
1745                         onComplete: function (transport) {
1746                                 labeltest_callback(transport);
1747                         } });
1748
1749                 return false;
1750
1751         } catch (e) {
1752                 exception_error("labelTest", e);
1753         }
1754 }
1755
1756 function isCdmMode() {
1757         return !document.getElementById("headlinesList");
1758 }
1759
1760 function getSelectedArticleIds2() {
1761         var rows = new Array();
1762         var cdm_mode = isCdmMode();
1763
1764         if (cdm_mode) {
1765                 rows = cdmGetSelectedArticles();
1766         } else {
1767                 rows = getSelectedTableRowIds("headlinesList", "RROW", "RCHK");
1768         }
1769
1770         var ids = new Array();
1771
1772         for (var i = 0; i < rows.length; i++) {
1773                 var chk = document.getElementById("RCHK-" + rows[i]);
1774                 if (chk && chk.checked) {
1775                         ids.push(rows[i]);
1776                 }
1777         }
1778
1779         return ids;
1780 }
1781
1782 function displayHelpInfobox(topic_id) {
1783
1784         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
1785
1786         var w = window.open(url, "ttrss_help",
1787                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
1788
1789         return false;
1790 }
1791
1792