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