functions.js

   1 var hotkeys_enabled = true;
   2
   3 var xmlhttp_rpc = Ajax.getTransport();
   4
   5 function browser_has_opacity() {
   6         return navigator.userAgent.match("Gecko") != null ||
   7                 navigator.userAgent.match("Opera") != null;
   8 }
   9
  10 function 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                 if (browser_has_opacity()) {
  93                         if (notify_opacity >= 0) {
  94                                 notify_opacity = notify_opacity - 0.1;
  95                                 n.style.opacity = notify_opacity;
  96                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  97                         } else {
  98                                 n.style.display = "none";
  99                                 n.style.opacity = 1;
 100                         }
 101                 } else {
 102                         n.style.display = "none";
 103                 }
 104         }
 105 }
 106
 107 function notify_real(msg, doc, no_hide, is_err) {
 108
 109         var n = doc.getElementById("notify");
 110         var nb = doc.getElementById("notify_body");
 111
 112         if (!n || !nb) return;
 113
 114         if (notify_hide_timerid) {
 115                 window.clearTimeout(notify_hide_timerid);
 116         }
 117
 118         notify_last_doc = doc;
 119         notify_opacity = 1;
 120
 121         if (msg == "") {
 122                 if (n.style.display == "block") {
 123                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 124                 }
 125                 return;
 126         } else {
 127                 n.style.display = "block";
 128         }
 129
 130         if (is_err) {
 131                 n.style.backgroundColor = "#ffcccc";
 132                 n.style.color = "black";
 133                 n.style.borderColor = "#ff0000";
 134         } else {
 135                 n.style.backgroundColor = "#fff7d5";
 136                 n.style.borderColor = "#d7c47a";
 137                 n.style.color = "black";
 138         }
 139
 140         nb.innerHTML = msg;
 141
 142         if (!no_hide) {
 143                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 144         }
 145 }
 146
 147 function p_notify(msg, no_hide, is_err) {
 148         notify_real(msg, parent.document, no_hide, is_err);
 149 }
 150
 151 function notify(msg, no_hide, is_err) {
 152         notify_real(msg, document, no_hide, is_err);
 153 }
 154
 155 function printLockingError() {
 156         notify("Please wait until operation finishes");}
 157
 158 function hotkey_handler(e) {
 159
 160         try {
 161
 162                 var keycode;
 163
 164                 if (!hotkeys_enabled) return;
 165
 166                 if (window.event) {
 167                         keycode = window.event.keyCode;
 168                 } else if (e) {
 169                         keycode = e.which;
 170                 }
 171
 172                 var m_ctx = getMainContext();
 173                 var f_ctx = getFeedsContext();
 174                 var h_ctx = getHeadlinesContext();
 175
 176                 if (keycode == 82) { // r
 177                         return m_ctx.scheduleFeedUpdate(true);
 178                 }
 179
 180                 if (keycode == 83) { // r
 181                         return m_ctx.displayDlg("search", getActiveFeedId());
 182                 }
 183
 184                 if (keycode == 85) { // u
 185                         if (getActiveFeedId()) {
 186                                 return f_ctx.viewfeed(getActiveFeedId(), "ForceUpdate");
 187                         }
 188                 }
 189
 190                 if (keycode == 65) { // a
 191                         return m_ctx.toggleDispRead();
 192                 }
 193
 194                 var f_doc = m_ctx.frames["feeds-frame"].document;
 195                 var feedlist = f_doc.getElementById('feedList');
 196
 197                 if (keycode == 74) { // j
 198                         var feed = getActiveFeedId();
 199                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 200                         if (new_feed) viewfeed(new_feed, '');
 201                 }
 202
 203                 if (keycode == 75) { // k
 204                         var feed = getActiveFeedId();
 205                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 206                         if (new_feed) viewfeed(new_feed, '');
 207                 }
 208
 209                 if (keycode == 78 || keycode == 40) { // n, down
 210                         if (typeof h_ctx.moveToPost != 'undefined') {
 211                                 return h_ctx.moveToPost('next');
 212                         }
 213                 }
 214
 215                 if (keycode == 80 || keycode == 38) { // p, up
 216                         if (typeof h_ctx.moveToPost != 'undefined') {
 217                                 return h_ctx.moveToPost('prev');
 218                         }
 219                 }
 220
 221                 if (typeof localHotkeyHandler != 'undefined') {
 222                         try {
 223                                 localHotkeyHandler(keycode);
 224                         } catch (e) {
 225                                 exception_error("hotkey_handler, local:", e);
 226                         }
 227                 }
 228         } catch (e) {
 229                 exception_error("hotkey_handler", e);
 230         }
 231 }
 232
 233 function cleanSelectedList(element) {
 234         var content = document.getElementById(element);
 235
 236         if (!document.getElementById("feedCatHolder")) {
 237                 for (i = 0; i < content.childNodes.length; i++) {
 238                         var child = content.childNodes[i];
 239                         try {
 240                                 child.className = child.className.replace("Selected", "");
 241                         } catch (e) {
 242                                 //
 243                         }
 244                 }
 245         } else {
 246                 for (i = 0; i < content.childNodes.length; i++) {
 247                         var child = content.childNodes[i];
 248                         if (child.id == "feedCatHolder") {
 249                                 parent.debug(child.id);
 250                                 var fcat = child.lastChild;
 251                                 for (j = 0; j < fcat.childNodes.length; j++) {
 252                                         var feed = fcat.childNodes[j];
 253                                         feed.className = feed.className.replace("Selected", "");
 254                                 }
 255                         }
 256                 }
 257         }
 258 }
 259
 260
 261 function cleanSelected(element) {
 262         var content = document.getElementById(element);
 263
 264         for (i = 0; i < content.rows.length; i++) {
 265                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 266         }
 267 }
 268
 269 function getVisibleUnreadHeadlines() {
 270         var content = document.getElementById("headlinesList");
 271
 272         var rows = new Array();
 273
 274         for (i = 0; i < content.rows.length; i++) {
 275                 var row_id = content.rows[i].id.replace("RROW-", "");
 276                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 277                                 rows.push(row_id);
 278                 }
 279         }
 280         return rows;
 281 }
 282
 283 function getVisibleHeadlineIds() {
 284
 285         var content = document.getElementById("headlinesList");
 286
 287         var rows = new Array();
 288
 289         for (i = 0; i < content.rows.length; i++) {
 290                 var row_id = content.rows[i].id.replace("RROW-", "");
 291                 if (row_id.length > 0) {
 292                                 rows.push(row_id);
 293                 }
 294         }
 295         return rows;
 296 }
 297
 298 function getFirstVisibleHeadlineId() {
 299         var rows = getVisibleHeadlineIds();
 300         return rows[0];
 301 }
 302
 303 function getLastVisibleHeadlineId() {
 304         var rows = getVisibleHeadlineIds();
 305         return rows[rows.length-1];
 306 }
 307
 308 function markHeadline(id) {
 309         var row = document.getElementById("RROW-" + id);
 310         if (row) {
 311                 var is_active = false;
 312
 313                 if (row.className.match("Active")) {
 314                         is_active = true;
 315                 }
 316                 row.className = row.className.replace("Selected", "");
 317                 row.className = row.className.replace("Active", "");
 318                 row.className = row.className.replace("Insensitive", "");
 319
 320                 if (is_active) {
 321                         row.className = row.className = "Active";
 322                 }
 323
 324                 var check = document.getElementById("RCHK-" + id);
 325
 326                 if (check) {
 327                         check.checked = true;
 328                 }
 329
 330                 row.className = row.className + "Selected";
 331
 332         }
 333 }
 334
 335 function getFeedIds() {
 336         var content = document.getElementById("feedsList");
 337
 338         var rows = new Array();
 339
 340         for (i = 0; i < content.rows.length; i++) {
 341                 var id = content.rows[i].id.replace("FEEDR-", "");
 342                 if (id.length > 0) {
 343                         rows.push(id);
 344                 }
 345         }
 346
 347         return rows;
 348 }
 349
 350 function setCookie(name, value, lifetime, path, domain, secure) {
 351
 352         var d = false;
 353
 354         if (lifetime) {
 355                 d = new Date();
 356                 d.setTime(lifetime * 1000);
 357         }
 358
 359         int_setCookie(name, value, d, path, domain, secure);
 360
 361 }
 362
 363 function int_setCookie(name, value, expires, path, domain, secure) {
 364         document.cookie= name + "=" + escape(value) +
 365                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 366                 ((path) ? "; path=" + path : "") +
 367                 ((domain) ? "; domain=" + domain : "") +
 368                 ((secure) ? "; secure" : "");
 369 }
 370
 371 function delCookie(name, path, domain) {
 372         if (getCookie(name)) {
 373                 document.cookie = name + "=" +
 374                 ((path) ? ";path=" + path : "") +
 375                 ((domain) ? ";domain=" + domain : "" ) +
 376                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 377         }
 378 }
 379
 380
 381 function getCookie(name) {
 382
 383         var dc = document.cookie;
 384         var prefix = name + "=";
 385         var begin = dc.indexOf("; " + prefix);
 386         if (begin == -1) {
 387             begin = dc.indexOf(prefix);
 388             if (begin != 0) return null;
 389         }
 390         else {
 391             begin += 2;
 392         }
 393         var end = document.cookie.indexOf(";", begin);
 394         if (end == -1) {
 395             end = dc.length;
 396         }
 397         return unescape(dc.substring(begin + prefix.length, end));
 398 }
 399
 400 function disableContainerChildren(id, disable, doc) {
 401
 402         if (!doc) doc = document;
 403
 404         var container = doc.getElementById(id);
 405
 406         if (!container) {
 407                 //alert("disableContainerChildren: element " + id + " not found");
 408                 return;
 409         }
 410
 411         for (var i = 0; i < container.childNodes.length; i++) {
 412                 var child = container.childNodes[i];
 413
 414                 try {
 415                         child.disabled = disable;
 416                 } catch (E) {
 417
 418                 }
 419
 420                 if (disable) {
 421                         if (child.className && child.className.match("button")) {
 422                                 child.className = "disabledButton";
 423                         }
 424                 } else {
 425                         if (child.className && child.className.match("disabledButton")) {
 426                                 child.className = "button";
 427                         }
 428                 }
 429         }
 430
 431 }
 432
 433 function gotoPreferences() {
 434         document.location.href = "prefs.php";
 435 }
 436
 437 function gotoMain() {
 438         document.location.href = "tt-rss.php";
 439 }
 440
 441 function gotoExportOpml() {
 442         document.location.href = "opml.php?op=Export";
 443 }
 444
 445 function getActiveFeedId() {
 446 //      return getCookie("ttrss_vf_actfeed");
 447         try {
 448                 debug("gAFID: " + getMainContext().active_feed_id);
 449                 return getMainContext().active_feed_id;
 450         } catch (e) {
 451                 exception_error("getActiveFeedId", e);
 452         }
 453 }
 454
 455 function activeFeedIsCat() {
 456         return getMainContext().active_feed_is_cat;
 457 }
 458
 459 function setActiveFeedId(id) {
 460 //      return setCookie("ttrss_vf_actfeed", id);
 461         try {
 462                 debug("sAFID(" + id + ")");
 463                 getMainContext().active_feed_id = id;
 464         } catch (e) {
 465                 exception_error("setActiveFeedId", e);
 466         }
 467 }
 468
 469 function parse_counters(reply, scheduled_call) {
 470         try {
 471                 var f_document = getFeedsContext().document;
 472                 var title_obj = getMainContext();
 473
 474                 var feeds_found = 0;
 475
 476                 if (reply.firstChild && reply.firstChild.firstChild) {
 477                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 478                         reply = reply.firstChild;
 479                 }
 480
 481                 debug("F_DOC: " + f_document + ", T_OBJ: " + title_obj);
 482
 483                 for (var l = 0; l < reply.childNodes.length; l++) {
 484                         if (!reply.childNodes[l] ||
 485                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 486                                 // where did this come from?
 487                                 continue;
 488                         }
 489
 490                         var id = reply.childNodes[l].getAttribute("id");
 491                         var t = reply.childNodes[l].getAttribute("type");
 492                         var ctr = reply.childNodes[l].getAttribute("counter");
 493                         var error = reply.childNodes[l].getAttribute("error");
 494                         var has_img = reply.childNodes[l].getAttribute("hi");
 495                         var updated = reply.childNodes[l].getAttribute("updated");
 496
 497                         if (id == "global-unread") {
 498                                 title_obj.global_unread = ctr;
 499                                 title_obj.updateTitle();
 500                                 continue;
 501                         }
 502
 503                         if (id == "subscribed-feeds") {
 504                                 feeds_found = ctr;
 505                                 continue;
 506                         }
 507
 508                         if (t == "category") {
 509                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 510                                 if (catctr) {
 511                                         catctr.innerHTML = "(" + ctr + " unread)";
 512                                 }
 513                                 continue;
 514                         }
 515
 516                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 517                         var feedu = f_document.getElementById("FEEDU-" + id);
 518                         var feedr = f_document.getElementById("FEEDR-" + id);
 519                         var feed_img = f_document.getElementById("FIMG-" + id);
 520                         var feedlink = f_document.getElementById("FEEDL-" + id);
 521                         var feedupd = f_document.getElementById("FLUPD-" + id);
 522
 523                         if (updated && feedlink) {
 524                                 if (error) {
 525                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 526                                 } else {
 527                                         feedlink.title = "Updated: " + updated;
 528                                 }
 529                         }
 530
 531                         if (updated && feedupd) {
 532                                 if (error) {
 533                                         feedupd.innerHTML = updated + " (Error)";
 534                                 } else {
 535                                         feedupd.innerHTML = updated;
 536                                 }
 537                         }
 538
 539                         if (feedctr && feedu && feedr) {
 540
 541                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 542                                         var hf = title_obj.parent.frames["headlines-frame"];
 543                                         hf.location.reload(true);
 544                                 }
 545
 546                                 feedu.innerHTML = ctr;
 547
 548                                 if (error) {
 549                                         feedr.className = feedr.className.replace("feed", "error");
 550                                 } else if (id > 0) {
 551                                         feedr.className = feedr.className.replace("error", "feed");
 552                                 }
 553
 554                                 if (ctr > 0) {
 555                                         feedctr.className = "odd";
 556                                         if (!feedr.className.match("Unread")) {
 557                                                 var is_selected = feedr.className.match("Selected");
 558
 559                                                 feedr.className = feedr.className.replace("Selected", "");
 560                                                 feedr.className = feedr.className.replace("Unread", "");
 561
 562                                                 feedr.className = feedr.className + "Unread";
 563
 564                                                 if (is_selected) {
 565                                                         feedr.className = feedr.className + "Selected";
 566                                                 }
 567
 568                                         }
 569                                 } else {
 570                                         feedctr.className = "invisible";
 571                                         feedr.className = feedr.className.replace("Unread", "");
 572                                 }
 573                         }
 574                 }
 575
 576                 hideOrShowFeeds(getFeedsContext().document,
 577                         getInitParam("hide_read_feeds") == 1);
 578
 579                 var feeds_stored = getMainContext().number_of_feeds;
 580
 581                 debug("Feed counters, C: " + feeds_found + ", S:" + feeds_stored);
 582
 583                 if (feeds_stored != feeds_found) {
 584                         getMainContext().number_of_feeds = feeds_found;
 585
 586                         if (feeds_stored != 0) {
 587                                 debug("Subscribed feed number changed, refreshing feedlist");
 588                                 updateFeedList();
 589                         }
 590                 }
 591
 592         } catch (e) {
 593                 exception_error("parse_counters", e);
 594         }
 595 }
 596
 597 function all_counters_callback() {
 598         if (xmlhttp_rpc.readyState == 4) {
 599                 try {
 600                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 601                                 debug("[all_counters_callback] backend did not return valid XML");
 602                                 return;
 603                         }
 604
 605                         debug("in all_counters_callback");
 606
 607                         var reply = xmlhttp_rpc.responseXML.firstChild;
 608
 609                         var counters = reply.firstChild;
 610
 611                         parse_counters(counters);
 612
 613                         var runtime = counters.nextSibling;
 614
 615                         if (runtime) {
 616                                 getMainContext().parse_runtime_info(runtime);
 617                         }
 618
 619                         if (getInitParam("feeds_sort_by_unread") == 1) {
 620                                 resort_feedlist();
 621                         }
 622
 623                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 624
 625                 } catch (e) {
 626                         exception_error("all_counters_callback", e);
 627                 }
 628         }
 629 }
 630
 631 function get_feed_entry_unread(doc, elem) {
 632
 633         var id = elem.id.replace("FEEDR-", "");
 634
 635         if (id <= 0) {
 636                 return -1;
 637         }
 638
 639         try {
 640                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 641         } catch (e) {
 642                 return -1;
 643         }
 644 }
 645
 646 function resort_category(doc, node) {
 647         debug("resort_category: " + node);
 648
 649         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 650                 for (i = 0; i < node.childNodes.length; i++) {
 651                         if (node.childNodes[i].nodeName != "LI") { continue; }
 652
 653                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 654                                 continue;
 655                         }
 656
 657                         for (j = i+1; j < node.childNodes.length; j++) {
 658                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 659
 660                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 661                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 662
 663                                 if (cur_val > tmp_val) {
 664                                         tempnode_i = node.childNodes[i].cloneNode(true);
 665                                         tempnode_j = node.childNodes[j].cloneNode(true);
 666                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 667                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 668                                 }
 669                         }
 670
 671                 }
 672         }
 673
 674 }
 675
 676 function resort_feedlist() {
 677         debug("resort_feedlist");
 678
 679         var fd = getFeedsContext().document;
 680
 681         if (fd.getElementById("feedCatHolder")) {
 682
 683                 var feeds = fd.getElementById("feedList");
 684                 var child = feeds.firstChild;
 685
 686                 while (child) {
 687
 688                         if (child.id == "feedCatHolder") {
 689                                 resort_category(fd, child.firstChild);
 690                         }
 691
 692                         child = child.nextSibling;
 693                 }
 694
 695         } else {
 696                 resort_category(fd, fd.getElementById("feedList"));
 697         }
 698 }
 699
 700 function update_all_counters(feed) {
 701         if (xmlhttp_ready(xmlhttp_rpc)) {
 702                 var query = "backend.php?op=rpc&subop=getAllCounters";
 703
 704                 if (feed > 0) {
 705                         query = query + "&aid=" + feed;
 706                 }
 707
 708                 xmlhttp_rpc.open("GET", query, true);
 709                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 710                 xmlhttp_rpc.send(null);
 711         }
 712 }
 713
 714 function popupHelp(tid) {
 715         var w = window.open("backend.php?op=help&tid=" + tid,
 716                 "Popup Help",
 717                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 718 }
 719
 720 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 721   * * @author Sundar Dorai-Raj
 722   * * Email: sdoraira@vt.edu
 723   * * This program is free software; you can redistribute it and/or
 724   * * modify it under the terms of the GNU General Public License
 725   * * as published by the Free Software Foundation; either version 2
 726   * * of the License, or (at your option) any later version,
 727   * * provided that any use properly credits the author.
 728   * * This program is distributed in the hope that it will be useful,
 729   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 730   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 731   * * GNU General Public License for more details at http://www.gnu.org * * */
 732
 733   var numbers=".0123456789";
 734   function isNumeric(x) {
 735     // is x a String or a character?
 736     if(x.length>1) {
 737       // remove negative sign
 738       x=Math.abs(x)+"";
 739       for(j=0;j<x.length;j++) {
 740         // call isNumeric recursively for each character
 741         number=isNumeric(x.substring(j,j+1));
 742         if(!number) return number;
 743       }
 744       return number;
 745     }
 746     else {
 747       // if x is number return true
 748       if(numbers.indexOf(x)>=0) return true;
 749       return false;
 750     }
 751   }
 752
 753
 754 function hideOrShowFeeds(doc, hide) {
 755
 756         debug("hideOrShowFeeds: " + doc + ", " + hide);
 757
 758         var fd = getFeedsContext().document;
 759
 760         var list = fd.getElementById("feedList");
 761
 762         if (fd.getElementById("feedCatHolder")) {
 763
 764                 var feeds = fd.getElementById("feedList");
 765                 var child = feeds.firstChild;
 766
 767                 while (child) {
 768
 769                         if (child.id == "feedCatHolder") {
 770                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 771                         }
 772
 773                         child = child.nextSibling;
 774                 }
 775
 776         } else {
 777                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 778         }
 779 }
 780
 781 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 782
 783 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 784
 785         var cat_unread = 0;
 786
 787         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 788                 for (i = 0; i < node.childNodes.length; i++) {
 789                         if (node.childNodes[i].nodeName != "LI") { continue; }
 790
 791                         if (node.childNodes[i].style != undefined) {
 792
 793                                 var has_unread = (node.childNodes[i].className != "feed");
 794
 795         //                      debug(node.childNodes[i].id + " --> " + has_unread);
 796
 797                                 if (hide && !has_unread) {
 798                                         node.childNodes[i].style.display = "none";
 799                                 }
 800
 801                                 if (!hide) {
 802                                         node.childNodes[i].style.display = "list-item";
 803                                 }
 804
 805                                 if (has_unread) {
 806                                         node.childNodes[i].style.display = "list-item";
 807                                         cat_unread++;
 808                                 }
 809                         }
 810                 }
 811         }
 812
 813         if (cat_unread == 0) {
 814                 if (cat_node.style == undefined) {
 815                         debug("ERROR: supplied cat_node " + cat_node +
 816                                 " has no styles. WTF?");
 817                         return;
 818                 }
 819                 if (hide) {
 820                         cat_node.style.display = "none";
 821                 } else {
 822                         cat_node.style.display = "list-item";
 823                 }
 824         } else {
 825                 try {
 826                         cat_node.style.display = "list-item";
 827                 } catch (e) {
 828                         debug(e);
 829                 }
 830         }
 831
 832 //      debug("unread for category: " + cat_unread);
 833 }
 834
 835 function selectTableRow(r, do_select) {
 836         r.className = r.className.replace("Selected", "");
 837
 838         if (do_select) {
 839                 r.className = r.className + "Selected";
 840         }
 841 }
 842
 843 function selectTableRowById(elem_id, check_id, do_select) {
 844
 845         try {
 846
 847                 var row = document.getElementById(elem_id);
 848
 849                 if (row) {
 850                         selectTableRow(row, do_select);
 851                 }
 852
 853                 var check = document.getElementById(check_id);
 854
 855                 if (check) {
 856                         check.checked = do_select;
 857                 }
 858         } catch (e) {
 859                 exception_error("selectTableRowById", e);
 860         }
 861 }
 862
 863 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 864         classcheck, reset_others) {
 865
 866         var content = document.getElementById(content_id);
 867
 868         if (!content) {
 869                 alert("[selectTableRows] Element " + content_id + " not found.");
 870                 return;
 871         }
 872
 873         for (i = 0; i < content.rows.length; i++) {
 874                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 875
 876                         if (content.rows[i].id.match(prefix)) {
 877                                 selectTableRow(content.rows[i], do_select);
 878
 879                                 var row_id = content.rows[i].id.replace(prefix, "");
 880                                 var check = document.getElementById(check_prefix + row_id);
 881
 882                                 if (check) {
 883                                         check.checked = do_select;
 884                                 }
 885                         } else if (reset_others) {
 886                                 selectTableRow(content.rows[i], false);
 887
 888                                 var row_id = content.rows[i].id.replace(prefix, "");
 889                                 var check = document.getElementById(check_prefix + row_id);
 890
 891                                 if (check) {
 892                                         check.checked = false;
 893                                 }
 894
 895                         }
 896                 } else if (reset_others) {
 897                         selectTableRow(content.rows[i], false);
 898
 899                         var row_id = content.rows[i].id.replace(prefix, "");
 900                         var check = document.getElementById(check_prefix + row_id);
 901
 902                         if (check) {
 903                                 check.checked = false;
 904                         }
 905
 906                 }
 907         }
 908 }
 909
 910 function getSelectedTableRowIds(content_id, prefix) {
 911
 912         var content = document.getElementById(content_id);
 913
 914         if (!content) {
 915                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 916                 return;
 917         }
 918
 919         var sel_rows = new Array();
 920
 921         for (i = 0; i < content.rows.length; i++) {
 922                 if (content.rows[i].id.match(prefix) &&
 923                                 content.rows[i].className.match("Selected")) {
 924
 925                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 926                         sel_rows.push(row_id);
 927                 }
 928         }
 929
 930         return sel_rows;
 931
 932 }
 933
 934 function toggleSelectRowById(sender, id) {
 935         var row = document.getElementById(id);
 936
 937         if (sender.checked) {
 938                 if (!row.className.match("Selected")) {
 939                         row.className = row.className + "Selected";
 940                 }
 941         } else {
 942                 if (row.className.match("Selected")) {
 943                         row.className = row.className.replace("Selected", "");
 944                 }
 945         }
 946 }
 947
 948 function toggleSelectListRow(sender) {
 949         var parent_row = sender.parentNode;
 950
 951         if (sender.checked) {
 952                 if (!parent_row.className.match("Selected")) {
 953                         parent_row.className = parent_row.className + "Selected";
 954                 }
 955         } else {
 956                 if (parent_row.className.match("Selected")) {
 957                         parent_row.className = parent_row.className.replace("Selected", "");
 958                 }
 959         }
 960 }
 961
 962
 963 function toggleSelectRow(sender) {
 964         var parent_row = sender.parentNode.parentNode;
 965
 966         if (sender.checked) {
 967                 if (!parent_row.className.match("Selected")) {
 968                         parent_row.className = parent_row.className + "Selected";
 969                 }
 970         } else {
 971                 if (parent_row.className.match("Selected")) {
 972                         parent_row.className = parent_row.className.replace("Selected", "");
 973                 }
 974         }
 975 }
 976
 977 function openExternalUrl(url) {
 978         var w = window.open(url);
 979 }
 980
 981 function getRelativeFeedId(list, id, direction, unread_only) {
 982         if (!id) {
 983                 if (direction == "next") {
 984                         for (i = 0; i < list.childNodes.length; i++) {
 985                                 var child = list.childNodes[i];
 986                                 if (child.id && child.id == "feedCatHolder") {
 987                                         if (child.lastChild) {
 988                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 989                                                 if (cr) return cr;
 990                                         }
 991                                 } else if (child.id && child.id.match("FEEDR-")) {
 992                                         return child.id.replace('FEEDR-', '');
 993                                 }
 994                         }
 995                 }
 996
 997                 // FIXME select last feed doesn't work when only unread feeds are visible
 998
 999                 if (direction == "prev") {
1000                         for (i = list.childNodes.length-1; i >= 0; i--) {
1001                                 var child = list.childNodes[i];
1002                                 if (child.id == "feedCatHolder") {
1003                                         if (child.firstChild) {
1004                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
1005                                                 if (cr) return cr;
1006                                         }
1007                                 } else if (child.id.match("FEEDR-")) {
1008
1009                                         if (getInitParam("hide_read_feeds") == 1) {
1010                                                 if (child.className != "feed") {
1011                                                         alert(child.className);
1012                                                         return child.id.replace('FEEDR-', '');
1013                                                 }
1014                                         } else {
1015                                                         return child.id.replace('FEEDR-', '');
1016                                         }
1017                                 }
1018                         }
1019                 }
1020         } else {
1021
1022                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
1023
1024                 if (getInitParam("hide_read_feeds") == 1) {
1025                         unread_only = true;
1026                 }
1027
1028                 if (direction == "next") {
1029
1030                         var e = feed;
1031
1032                         while (e) {
1033
1034                                 if (e.nextSibling) {
1035
1036                                         e = e.nextSibling;
1037
1038                                 } else if (e.parentNode.parentNode.nextSibling) {
1039
1040                                         var this_cat = e.parentNode.parentNode;
1041
1042                                         e = false;
1043
1044                                         if (this_cat && this_cat.nextSibling) {
1045                                                 while (!e && this_cat.nextSibling) {
1046                                                         this_cat = this_cat.nextSibling;
1047                                                         if (this_cat.id == "feedCatHolder") {
1048                                                                 e = this_cat.firstChild.firstChild;
1049                                                         }
1050                                                 }
1051                                         }
1052
1053                                 } else {
1054                                         e = false;
1055                            }
1056
1057                                 if (e) {
1058                                         if (!unread_only || (unread_only && e.className != "feed" &&
1059                                                         e.className != "error"))        {
1060                                                 return e.id.replace("FEEDR-", "");
1061                                         }
1062                                 }
1063                         }
1064
1065                 } else if (direction == "prev") {
1066
1067                         var e = feed;
1068
1069                         while (e) {
1070
1071                                 if (e.previousSibling) {
1072
1073                                         e = e.previousSibling;
1074
1075                                 } else if (e.parentNode.parentNode.previousSibling) {
1076
1077                                         var this_cat = e.parentNode.parentNode;
1078
1079                                         e = false;
1080
1081                                         if (this_cat && this_cat.previousSibling) {
1082                                                 while (!e && this_cat.previousSibling) {
1083                                                         this_cat = this_cat.previousSibling;
1084                                                         if (this_cat.id == "feedCatHolder") {
1085                                                                 e = this_cat.firstChild.lastChild;
1086                                                         }
1087                                                 }
1088                                         }
1089
1090                                 } else {
1091                                         e = false;
1092                            }
1093
1094                                 if (e) {
1095                                         if (!unread_only || (unread_only && e.className != "feed" &&
1096                                                         e.className != "error"))        {
1097                                                 return e.id.replace("FEEDR-", "");
1098                                         }
1099                                 }
1100                         }
1101                 }
1102         }
1103 }
1104
1105 function showBlockElement(id) {
1106         var elem = document.getElementById(id);
1107
1108         if (elem) {
1109                 elem.style.display = "block";
1110         } else {
1111                 alert("[showBlockElement] can't find element with id " + id);
1112         }
1113 }
1114
1115 function hideParentElement(e) {
1116         e.parentNode.style.display = "none";
1117 }
1118
1119 function dropboxSelect(e, v) {
1120         for (i = 0; i < e.length; i++) {
1121                 if (e[i].value == v) {
1122                         e.selectedIndex = i;
1123                         break;
1124                 }
1125         }
1126 }
1127
1128 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1129 // bugfixed just a little bit :-)
1130 function getURLParam(strParamName){
1131   var strReturn = "";
1132   var strHref = window.location.href;
1133
1134   if (strHref.indexOf("#") == strHref.length-1) {
1135                 strHref = strHref.substring(0, strHref.length-1);
1136   }
1137
1138   if ( strHref.indexOf("?") > -1 ){
1139     var strQueryString = strHref.substr(strHref.indexOf("?"));
1140     var aQueryString = strQueryString.split("&");
1141     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1142       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1143         var aParam = aQueryString[iParam].split("=");
1144         strReturn = aParam[1];
1145         break;
1146       }
1147     }
1148   }
1149   return strReturn;
1150 }
1151
1152 function leading_zero(p) {
1153         var s = String(p);
1154         if (s.length == 1) s = "0" + s;
1155         return s;
1156 }
1157
1158 function closeInfoBox(cleanup) {
1159         var box = document.getElementById('infoBox');
1160         var shadow = document.getElementById('infoBoxShadow');
1161
1162         if (shadow) {
1163                 shadow.style.display = "none";
1164         } else if (box) {
1165                 box.style.display = "none";
1166         }
1167
1168         if (cleanup) box.innerHTML = "&nbsp;";
1169
1170         enableHotkeys();
1171
1172         return false;
1173 }
1174
1175
1176 function displayDlg(id, param) {
1177
1178         if (!xmlhttp_ready(xmlhttp)) {
1179                 printLockingError();
1180                 return
1181         }
1182
1183         notify("");
1184
1185         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1186                 param_escape(id) + "&param=" + param_escape(param), true);
1187         xmlhttp.onreadystatechange=infobox_callback;
1188         xmlhttp.send(null);
1189
1190         disableHotkeys();
1191
1192         return false;
1193 }
1194
1195 function infobox_submit_callback() {
1196         if (xmlhttp.readyState == 4) {
1197                 closeInfoBox();
1198
1199                 // called from prefs, reload tab
1200                 if (active_tab) {
1201                         selectTab(active_tab, false);
1202                 }
1203
1204                 notify(xmlhttp.responseText);
1205
1206         }
1207 }
1208
1209 function infobox_callback() {
1210         if (xmlhttp.readyState == 4) {
1211                 var box = document.getElementById('infoBox');
1212                 var shadow = document.getElementById('infoBoxShadow');
1213                 if (box) {
1214                         box.innerHTML=xmlhttp.responseText;
1215                         if (shadow) {
1216                                 shadow.style.display = "block";
1217                         } else {
1218                                 box.style.display = "block";
1219                         }
1220                 }
1221         }
1222 }
1223
1224 function qaddFilter() {
1225
1226         if (!xmlhttp_ready(xmlhttp)) {
1227                 printLockingError();
1228                 return
1229         }
1230
1231         var query = Form.serialize("filter_add_form");
1232
1233         xmlhttp.open("GET", "backend.php?" + query, true);
1234         xmlhttp.onreadystatechange=infobox_submit_callback;
1235         xmlhttp.send(null);
1236
1237         return true;
1238 }
1239
1240 function toggleSubmitNotEmpty(e, submit_id) {
1241         try {
1242                 document.getElementById(submit_id).disabled = (e.value == "")
1243         } catch (e) {
1244                 exception_error("toggleSubmitNotEmpty", e);
1245         }
1246 }
1247
1248 function isValidURL(s) {
1249         return s.match("http://") != null || s.match("https://") != null;
1250 }
1251
1252 function qafAdd() {
1253
1254         if (!xmlhttp_ready(xmlhttp)) {
1255                 printLockingError();
1256                 return
1257         }
1258
1259         notify("Adding feed...");
1260
1261         closeInfoBox();
1262
1263         var feeds_doc = getFeedsContext().document;
1264
1265         feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1266
1267         var query = Form.serialize("feed_add_form");
1268
1269         xmlhttp.open("GET", "backend.php?" + query, true);
1270         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1271         xmlhttp.send(null);
1272 }
1273
1274 function filterCR(e)
1275 {
1276      var key;
1277
1278      if(window.event)
1279           key = window.event.keyCode;     //IE
1280      else
1281           key = e.which;     //firefox
1282
1283      if(key == 13)
1284           return false;
1285      else
1286           return true;
1287 }
1288
1289 function getMainContext() {
1290         if (parent.window != window) {
1291                 return parent.window;
1292         } else {
1293                 return this.window;
1294         }
1295 }
1296
1297 function getFeedsContext() {
1298         try {
1299                 return getMainContext().frames["feeds-frame"];
1300         } catch (e) {
1301                 exception_error("getFeedsContext", e);
1302         }
1303 }
1304
1305 function getContentContext() {
1306         try {
1307                 return getMainContext().frames["content-frame"];
1308         } catch (e) {
1309                 exception_error("getContentContext", e);
1310         }
1311 }
1312
1313
1314 function getHeadlinesContext() {
1315         try {
1316                 return getMainContext().frames["headlines-frame"];
1317         } catch (e) {
1318                 exception_error("getHeadlinesContext", e);
1319         }
1320 }
1321
1322 var debug_last_class = "even";
1323
1324 function debug(msg) {
1325         var ctx = getMainContext();
1326
1327         if (ctx.debug_last_class == "even") {
1328                 ctx.debug_last_class = "odd";
1329         } else {
1330                 ctx.debug_last_class = "even";
1331         }
1332
1333         var c = ctx.document.getElementById('debug_output');
1334         if (c && c.style.display == "block") {
1335                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1336                         c.removeChild(c.lastChild);
1337                 }
1338
1339                 var d = new Date();
1340                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1341                         ":" + leading_zero(d.getSeconds());
1342                 c.innerHTML = "<li class=\"" + ctx.debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1343                         msg + "</li>" + c.innerHTML;
1344         }
1345 }
1346
1347 function getInitParam(key) {
1348         return getMainContext().init_params[key];
1349 }
1350
1351 function storeInitParam(key, value, is_client) {
1352         try {
1353                 if (!is_client) {
1354                         if (getMainContext().init_params[key] != value) {
1355                                 debug("storeInitParam: " + key + " => " + value);
1356                                 //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1357                                 //      param_escape(key) + "&value=" + param_escape(value));
1358                                 var f = getMainContext().document.getElementById("backReqBox");
1359                                 f.src = "backend.php?op=rpc&subop=storeParam&key=" +
1360                                         param_escape(key) + "&value=" + param_escape(value);
1361                         }
1362                 }
1363                 getMainContext().init_params[key] = value;
1364         } catch (e) {
1365                 exception_error("storeInitParam", e);
1366         }
1367 }
1368
1369 /*
1370 function storeInitParams(params, is_client) {
1371         try {
1372                 var s = "";
1373
1374                 for (k in params) {
1375                         if (getMainContext().init_params[k] != params[k]) {
1376                                 s += k + "=" + params[k] + ";";
1377                                 getMainContext().init_params[k] = params[k];
1378                         }
1379                 }
1380
1381                 debug("storeInitParams: " + s);
1382
1383                 if (!is_client) {
1384                         new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
1385                 }
1386         } catch (e) {
1387                 exception_error("storeInitParams", e);
1388         }
1389 }*/
1390
1391 function fatalError(code, message) {
1392         try {
1393                 var fe = document.getElementById("fatal_error");
1394                 var fc = document.getElementById("fatal_error_msg");
1395
1396                 fc.innerHTML = "Code " + code + ": " + message;
1397
1398                 fe.style.display = "block";
1399
1400         } catch (e) {
1401                 exception_error("fatalError", e);
1402         }
1403 }
1404
1405 function getFeedName(id, is_cat) {
1406         var d = getFeedsContext().document;
1407
1408         var e;
1409
1410         if (is_cat) {
1411                 e = d.getElementById("FCATN-" + id);
1412         } else {
1413                 e = d.getElementById("FEEDN-" + id);
1414         }
1415         if (e) {
1416                 return e.innerHTML.stripTags();
1417         } else {
1418                 return null;
1419         }
1420 }
1421
1422 function viewContentUrl(url) {
1423         getContentContext().location = url;
1424 }