functions.js

   1 var hotkeys_enabled = true;
   2
   3 var xmlhttp_rpc = Ajax.getTransport();
   4
   5 function browser_has_opacity() {
   6         return navigator.userAgent.match("Gecko") != null ||
   7                 navigator.userAgent.match("Opera") != null;
   8 }
   9
  10 function exception_error(location, e, silent) {
  11         var msg;
  12
  13         if (e.fileName) {
  14                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  15
  16                 msg = "Exception: " + e.name + ", " + e.message +
  17                         "\nFunction: " + location + "()" +
  18                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  19
  20         } else {
  21                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  22         }
  23
  24         debug("<b>EXCEPTION: " + msg + "</b>");
  25
  26         if (!silent) {
  27                 alert(msg);
  28         }
  29 }
  30
  31 function disableHotkeys() {
  32         hotkeys_enabled = false;
  33 }
  34
  35 function enableHotkeys() {
  36         hotkeys_enabled = true;
  37 }
  38
  39 function xmlhttp_ready(obj) {
  40         return obj.readyState == 4 || obj.readyState == 0 || !obj.readyState;
  41 }
  42
  43 function notify_callback() {
  44         var container = document.getElementById('notify');
  45         if (xmlhttp.readyState == 4) {
  46                 container.innerHTML=xmlhttp.responseText;
  47         }
  48 }
  49
  50 function rpc_notify_callback() {
  51         var container = document.getElementById('notify');
  52         if (xmlhttp_rpc.readyState == 4) {
  53                 container.innerHTML=xmlhttp_rpc.responseText;
  54         }
  55 }
  56
  57 function param_escape(arg) {
  58         if (typeof encodeURIComponent != 'undefined')
  59                 return encodeURIComponent(arg);
  60         else
  61                 return escape(arg);
  62 }
  63
  64 function param_unescape(arg) {
  65         if (typeof decodeURIComponent != 'undefined')
  66                 return decodeURIComponent(arg);
  67         else
  68                 return unescape(arg);
  69 }
  70
  71 function delay(gap) {
  72         var then,now;
  73         then=new Date().getTime();
  74         now=then;
  75         while((now-then)<gap) {
  76                 now=new Date().getTime();
  77         }
  78 }
  79
  80 var notify_hide_timerid = false;
  81 var notify_last_doc = false;
  82
  83 var notify_effect = false;
  84
  85 function hide_notify() {
  86         if (notify_last_doc) {
  87                 var n = notify_last_doc.getElementById("notify");
  88                 if (browser_has_opacity()) {
  89                         if (notify_opacity >= 0) {
  90                                 notify_opacity = notify_opacity - 0.1;
  91                                 n.style.opacity = notify_opacity;
  92                                 notify_hide_timerid = window.setTimeout("hide_notify()", 20);
  93                         } else {
  94                                 n.style.display = "none";
  95                                 n.style.opacity = 1;
  96                         }
  97                 } else {
  98                         n.style.display = "none";
  99                 }
 100         }
 101 }
 102
 103 function notify_real(msg, doc, no_hide, is_err) {
 104
 105         var n = doc.getElementById("notify");
 106         var nb = doc.getElementById("notify_body");
 107
 108         if (!n || !nb) return;
 109
 110         if (notify_hide_timerid) {
 111                 window.clearTimeout(notify_hide_timerid);
 112         }
 113
 114         notify_last_doc = doc;
 115         notify_opacity = 1;
 116
 117         if (msg == "") {
 118                 if (n.style.display == "block") {
 119                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 120                 }
 121                 return;
 122         } else {
 123                 n.style.display = "block";
 124         }
 125
 126         if (is_err) {
 127                 n.style.backgroundColor = "#ffcccc";
 128                 n.style.color = "black";
 129                 n.style.borderColor = "#ff0000";
 130         } else {
 131                 n.style.backgroundColor = "#fff7d5";
 132                 n.style.borderColor = "#d7c47a";
 133                 n.style.color = "black";
 134         }
 135
 136         nb.innerHTML = msg;
 137
 138         if (!no_hide) {
 139                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 140         }
 141 }
 142
 143 function p_notify(msg, no_hide, is_err) {
 144         notify_real(msg, parent.document, no_hide, is_err);
 145 }
 146
 147 function notify(msg, no_hide, is_err) {
 148         notify_real(msg, document, no_hide, is_err);
 149 }
 150
 151 function printLockingError() {
 152         notify("Please wait until operation finishes");}
 153
 154 var seq = "";
 155
 156 function hotkey_handler(e) {
 157
 158         try {
 159
 160                 var keycode;
 161
 162                 if (!hotkeys_enabled) return;
 163
 164                 if (window.event) {
 165                         keycode = window.event.keyCode;
 166                 } else if (e) {
 167                         keycode = e.which;
 168                 }
 169
 170                 if (keycode == 13 || keycode == 27) {
 171                         seq = "";
 172                 } else {
 173                         seq = seq + "" + keycode;
 174                 }
 175
 176                 var m_ctx = getMainContext();
 177                 var f_ctx = getFeedsContext();
 178                 var h_ctx = getHeadlinesContext();
 179
 180                 if (keycode == 82) { // r
 181                         return m_ctx.scheduleFeedUpdate(true);
 182                 }
 183
 184                 if (keycode == 83) { // r
 185                         return m_ctx.displayDlg("search", getActiveFeedId());
 186                 }
 187
 188                 if (keycode == 85) { // u
 189                         if (getActiveFeedId()) {
 190                                 return f_ctx.viewfeed(getActiveFeedId(), 0, "ForceUpdate");
 191                         }
 192                 }
 193
 194                 if (keycode == 65) { // a
 195                         return m_ctx.toggleDispRead();
 196                 }
 197
 198                 var f_doc = m_ctx.frames["feeds-frame"].document;
 199                 var feedlist = f_doc.getElementById('feedList');
 200
 201                 if (keycode == 74) { // j
 202                         var feed = getActiveFeedId();
 203                         var new_feed = getRelativeFeedId(feedlist, feed, 'prev');
 204                         if (new_feed) viewfeed(new_feed, 0, '');
 205                 }
 206
 207                 if (keycode == 75) { // k
 208                         var feed = getActiveFeedId();
 209                         var new_feed = getRelativeFeedId(feedlist, feed, 'next');
 210                         if (new_feed) viewfeed(new_feed, 0, '');
 211                 }
 212
 213                 if (keycode == 78 || keycode == 40) { // n, down
 214                         return h_ctx.moveToPost('next');
 215                 }
 216
 217                 if (keycode == 80 || keycode == 38) { // p, up
 218                         return h_ctx.moveToPost('prev');
 219                 }
 220
 221                 if (document.getElementById("piggie")) {
 222
 223                         if (seq.match("807371717369")) {
 224                                 seq = "";
 225                                 localPiggieFunction(true);
 226                         } else {
 227                                 localPiggieFunction(false);
 228                         }
 229                 }
 230
 231                 if (typeof localHotkeyHandler != 'undefined') {
 232                         try {
 233                                 localHotkeyHandler(keycode);
 234                         } catch (e) {
 235                                 exception_error("hotkey_handler, local:", e);
 236                         }
 237                 }
 238         } catch (e) {
 239                 exception_error("hotkey_handler", e);
 240         }
 241 }
 242
 243 function cleanSelectedList(element) {
 244         var content = document.getElementById(element);
 245
 246         if (!document.getElementById("feedCatHolder")) {
 247                 for (i = 0; i < content.childNodes.length; i++) {
 248                         var child = content.childNodes[i];
 249                         try {
 250                                 child.className = child.className.replace("Selected", "");
 251                         } catch (e) {
 252                                 //
 253                         }
 254                 }
 255         } else {
 256                 for (i = 0; i < content.childNodes.length; i++) {
 257                         var child = content.childNodes[i];
 258                         if (child.id == "feedCatHolder") {
 259                                 parent.debug(child.id);
 260                                 var fcat = child.lastChild;
 261                                 for (j = 0; j < fcat.childNodes.length; j++) {
 262                                         var feed = fcat.childNodes[j];
 263                                         feed.className = feed.className.replace("Selected", "");
 264                                 }
 265                         }
 266                 }
 267         }
 268 }
 269
 270
 271 function cleanSelected(element) {
 272         var content = document.getElementById(element);
 273
 274         for (i = 0; i < content.rows.length; i++) {
 275                 content.rows[i].className = content.rows[i].className.replace("Selected", "");
 276         }
 277 }
 278
 279 function getVisibleUnreadHeadlines() {
 280         var content = document.getElementById("headlinesList");
 281
 282         var rows = new Array();
 283
 284         for (i = 0; i < content.rows.length; i++) {
 285                 var row_id = content.rows[i].id.replace("RROW-", "");
 286                 if (row_id.length > 0 && content.rows[i].className.match("Unread")) {
 287                                 rows.push(row_id);
 288                 }
 289         }
 290         return rows;
 291 }
 292
 293 function getVisibleHeadlineIds() {
 294
 295         var content = document.getElementById("headlinesList");
 296
 297         var rows = new Array();
 298
 299         for (i = 0; i < content.rows.length; i++) {
 300                 var row_id = content.rows[i].id.replace("RROW-", "");
 301                 if (row_id.length > 0) {
 302                                 rows.push(row_id);
 303                 }
 304         }
 305         return rows;
 306 }
 307
 308 function getFirstVisibleHeadlineId() {
 309         var rows = getVisibleHeadlineIds();
 310         return rows[0];
 311 }
 312
 313 function getLastVisibleHeadlineId() {
 314         var rows = getVisibleHeadlineIds();
 315         return rows[rows.length-1];
 316 }
 317
 318 function markHeadline(id) {
 319         var row = document.getElementById("RROW-" + id);
 320         if (row) {
 321                 var is_active = false;
 322
 323                 if (row.className.match("Active")) {
 324                         is_active = true;
 325                 }
 326                 row.className = row.className.replace("Selected", "");
 327                 row.className = row.className.replace("Active", "");
 328                 row.className = row.className.replace("Insensitive", "");
 329
 330                 if (is_active) {
 331                         row.className = row.className = "Active";
 332                 }
 333
 334                 var check = document.getElementById("RCHK-" + id);
 335
 336                 if (check) {
 337                         check.checked = true;
 338                 }
 339
 340                 row.className = row.className + "Selected";
 341
 342         }
 343 }
 344
 345 function getFeedIds() {
 346         var content = document.getElementById("feedsList");
 347
 348         var rows = new Array();
 349
 350         for (i = 0; i < content.rows.length; i++) {
 351                 var id = content.rows[i].id.replace("FEEDR-", "");
 352                 if (id.length > 0) {
 353                         rows.push(id);
 354                 }
 355         }
 356
 357         return rows;
 358 }
 359
 360 function setCookie(name, value, lifetime, path, domain, secure) {
 361
 362         var d = false;
 363
 364         if (lifetime) {
 365                 d = new Date();
 366                 d.setTime(lifetime * 1000);
 367         }
 368
 369         int_setCookie(name, value, d, path, domain, secure);
 370
 371 }
 372
 373 function int_setCookie(name, value, expires, path, domain, secure) {
 374         document.cookie= name + "=" + escape(value) +
 375                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 376                 ((path) ? "; path=" + path : "") +
 377                 ((domain) ? "; domain=" + domain : "") +
 378                 ((secure) ? "; secure" : "");
 379 }
 380
 381 function delCookie(name, path, domain) {
 382         if (getCookie(name)) {
 383                 document.cookie = name + "=" +
 384                 ((path) ? ";path=" + path : "") +
 385                 ((domain) ? ";domain=" + domain : "" ) +
 386                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 387         }
 388 }
 389
 390
 391 function getCookie(name) {
 392
 393         var dc = document.cookie;
 394         var prefix = name + "=";
 395         var begin = dc.indexOf("; " + prefix);
 396         if (begin == -1) {
 397             begin = dc.indexOf(prefix);
 398             if (begin != 0) return null;
 399         }
 400         else {
 401             begin += 2;
 402         }
 403         var end = document.cookie.indexOf(";", begin);
 404         if (end == -1) {
 405             end = dc.length;
 406         }
 407         return unescape(dc.substring(begin + prefix.length, end));
 408 }
 409
 410 function disableContainerChildren(id, disable, doc) {
 411
 412         if (!doc) doc = document;
 413
 414         var container = doc.getElementById(id);
 415
 416         if (!container) {
 417                 //alert("disableContainerChildren: element " + id + " not found");
 418                 return;
 419         }
 420
 421         for (var i = 0; i < container.childNodes.length; i++) {
 422                 var child = container.childNodes[i];
 423
 424                 try {
 425                         child.disabled = disable;
 426                 } catch (E) {
 427
 428                 }
 429
 430                 if (disable) {
 431                         if (child.className && child.className.match("button")) {
 432                                 child.className = "disabledButton";
 433                         }
 434                 } else {
 435                         if (child.className && child.className.match("disabledButton")) {
 436                                 child.className = "button";
 437                         }
 438                 }
 439         }
 440
 441 }
 442
 443 function gotoPreferences() {
 444         document.location.href = "prefs.php";
 445 }
 446
 447 function gotoMain() {
 448         document.location.href = "tt-rss.php";
 449 }
 450
 451 function gotoExportOpml() {
 452         document.location.href = "opml.php?op=Export";
 453 }
 454
 455 function getActiveFeedId() {
 456 //      return getCookie("ttrss_vf_actfeed");
 457         try {
 458                 debug("gAFID: " + getMainContext().active_feed_id);
 459                 return getMainContext().active_feed_id;
 460         } catch (e) {
 461                 exception_error("getActiveFeedId", e);
 462         }
 463 }
 464
 465 function activeFeedIsCat() {
 466         return getMainContext().active_feed_is_cat;
 467 }
 468
 469 function setActiveFeedId(id) {
 470 //      return setCookie("ttrss_vf_actfeed", id);
 471         try {
 472                 getMainContext().active_feed_id = id;
 473         } catch (e) {
 474                 exception_error("setActiveFeedId", e);
 475         }
 476 }
 477
 478 function parse_counters(reply, scheduled_call) {
 479         try {
 480                 var f_document = getFeedsContext().document;
 481                 var title_obj = getMainContext();
 482
 483                 if (reply.firstChild && reply.firstChild.firstChild) {
 484                         debug("<b>wrong element passed to parse_counters, adjusting.</b>");
 485                         reply = reply.firstChild;
 486                 }
 487
 488                 debug("F_DOC: " + f_document + ", T_OBJ: " + title_obj);
 489
 490                 for (var l = 0; l < reply.childNodes.length; l++) {
 491                         if (!reply.childNodes[l] ||
 492                                 typeof(reply.childNodes[l].getAttribute) == "undefined") {
 493                                 // where did this come from?
 494                                 continue;
 495                         }
 496
 497                         var id = reply.childNodes[l].getAttribute("id");
 498                         var t = reply.childNodes[l].getAttribute("type");
 499                         var ctr = reply.childNodes[l].getAttribute("counter");
 500                         var error = reply.childNodes[l].getAttribute("error");
 501                         var has_img = reply.childNodes[l].getAttribute("hi");
 502                         var updated = reply.childNodes[l].getAttribute("updated");
 503
 504                         if (id == "global-unread") {
 505                                 title_obj.global_unread = ctr;
 506                                 title_obj.updateTitle();
 507                                 continue;
 508                         }
 509
 510                         if (t == "category") {
 511                                 var catctr = f_document.getElementById("FCATCTR-" + id);
 512                                 if (catctr) {
 513                                         catctr.innerHTML = "(" + ctr + " unread)";
 514                                 }
 515                                 continue;
 516                         }
 517
 518                         var feedctr = f_document.getElementById("FEEDCTR-" + id);
 519                         var feedu = f_document.getElementById("FEEDU-" + id);
 520                         var feedr = f_document.getElementById("FEEDR-" + id);
 521                         var feed_img = f_document.getElementById("FIMG-" + id);
 522                         var feedlink = f_document.getElementById("FEEDL-" + id);
 523                         var feedupd = f_document.getElementById("FLUPD-" + id);
 524
 525                         if (updated && feedlink) {
 526                                 if (error) {
 527                                         feedlink.title = "Error: " + error + " (" + updated + ")";
 528                                 } else {
 529                                         feedlink.title = "Updated: " + updated;
 530                                 }
 531                         }
 532
 533                         if (updated && feedupd) {
 534                                 if (error) {
 535                                         feedupd.innerHTML = updated + " (Error)";
 536                                 } else {
 537                                         feedupd.innerHTML = updated;
 538                                 }
 539                         }
 540
 541                         if (feedctr && feedu && feedr) {
 542
 543                                 if (feedu.innerHTML != ctr && id == getActiveFeedId() && scheduled_call) {
 544                                         var hf = title_obj.parent.frames["headlines-frame"];
 545                                         hf.location.reload(true);
 546                                 }
 547
 548                                 feedu.innerHTML = ctr;
 549
 550                                 if (error) {
 551                                         feedr.className = feedr.className.replace("feed", "error");
 552                                 } else if (id > 0) {
 553                                         feedr.className = feedr.className.replace("error", "feed");
 554                                 }
 555
 556                                 if (ctr > 0) {
 557                                         feedctr.className = "odd";
 558                                         if (!feedr.className.match("Unread")) {
 559                                                 var is_selected = feedr.className.match("Selected");
 560
 561                                                 feedr.className = feedr.className.replace("Selected", "");
 562                                                 feedr.className = feedr.className.replace("Unread", "");
 563
 564                                                 feedr.className = feedr.className + "Unread";
 565
 566                                                 if (is_selected) {
 567                                                         feedr.className = feedr.className + "Selected";
 568                                                 }
 569
 570                                         }
 571                                 } else {
 572                                         feedctr.className = "invisible";
 573                                         feedr.className = feedr.className.replace("Unread", "");
 574                                 }
 575                         }
 576                 }
 577         } catch (e) {
 578                 exception_error("parse_counters", e);
 579         }
 580 }
 581
 582 function all_counters_callback() {
 583         if (xmlhttp_rpc.readyState == 4) {
 584                 try {
 585                         if (!xmlhttp_rpc.responseXML || !xmlhttp_rpc.responseXML.firstChild) {
 586                                 debug("[all_counters_callback] backend did not return valid XML");
 587                                 return;
 588                         }
 589
 590                         debug("in all_counters_callback");
 591
 592                         var reply = xmlhttp_rpc.responseXML.firstChild;
 593
 594                         var counters = reply.firstChild;
 595
 596                         parse_counters(counters);
 597
 598                         var runtime = counters.nextSibling;
 599
 600                         if (runtime) {
 601                                 getMainContext().parse_runtime_info(runtime);
 602                         }
 603
 604                         if (getInitParam("feeds_sort_by_unread") == 1) {
 605                                 resort_feedlist();
 606                         }
 607
 608                         hideOrShowFeeds(document, getInitParam("hide_read_feeds") == 1);
 609
 610                 } catch (e) {
 611                         exception_error("all_counters_callback", e);
 612                 }
 613         }
 614 }
 615
 616 function get_feed_entry_unread(doc, elem) {
 617
 618         var id = elem.id.replace("FEEDR-", "");
 619
 620         if (id <= 0) {
 621                 return -1;
 622         }
 623
 624         try {
 625                 return parseInt(doc.getElementById("FEEDU-" + id).innerHTML);
 626         } catch (e) {
 627                 return -1;
 628         }
 629 }
 630
 631 function resort_category(doc, node) {
 632         debug("resort_category: " + node);
 633
 634         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 635                 for (i = 0; i < node.childNodes.length; i++) {
 636                         if (node.childNodes[i].nodeName != "LI") { continue; }
 637
 638                         if (get_feed_entry_unread(doc, node.childNodes[i]) < 0) {
 639                                 continue;
 640                         }
 641
 642                         for (j = i+1; j < node.childNodes.length; j++) {
 643                                 if (node.childNodes[j].nodeName != "LI") { continue; }
 644
 645                                 var tmp_val = get_feed_entry_unread(doc, node.childNodes[i]);
 646                                 var cur_val = get_feed_entry_unread(doc, node.childNodes[j]);
 647
 648                                 if (cur_val > tmp_val) {
 649                                         tempnode_i = node.childNodes[i].cloneNode(true);
 650                                         tempnode_j = node.childNodes[j].cloneNode(true);
 651                                         node.replaceChild(tempnode_i, node.childNodes[j]);
 652                                         node.replaceChild(tempnode_j, node.childNodes[i]);
 653                                 }
 654                         }
 655
 656                 }
 657         }
 658
 659 }
 660
 661 function resort_feedlist() {
 662         debug("resort_feedlist");
 663
 664         var fd = getFeedsContext().document;
 665
 666         if (fd.getElementById("feedCatHolder")) {
 667
 668                 var feeds = fd.getElementById("feedList");
 669                 var child = feeds.firstChild;
 670
 671                 while (child) {
 672
 673                         if (child.id == "feedCatHolder") {
 674                                 resort_category(fd, child.firstChild);
 675                         }
 676
 677                         child = child.nextSibling;
 678                 }
 679
 680         } else {
 681                 resort_category(fd, fd.getElementById("feedList"));
 682         }
 683 }
 684
 685 function update_all_counters(feed) {
 686         if (xmlhttp_ready(xmlhttp_rpc)) {
 687                 var query = "backend.php?op=rpc&subop=getAllCounters";
 688
 689                 if (feed > 0) {
 690                         query = query + "&aid=" + feed;
 691                 }
 692
 693                 xmlhttp_rpc.open("GET", query, true);
 694                 xmlhttp_rpc.onreadystatechange=all_counters_callback;
 695                 xmlhttp_rpc.send(null);
 696         }
 697 }
 698
 699 function popupHelp(tid) {
 700         var w = window.open("backend.php?op=help&tid=" + tid,
 701                 "Popup Help",
 702                 "menubar=no,location=no,resizable=yes,scrollbars=yes,status=no");
 703 }
 704
 705 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 706   * * @author Sundar Dorai-Raj
 707   * * Email: sdoraira@vt.edu
 708   * * This program is free software; you can redistribute it and/or
 709   * * modify it under the terms of the GNU General Public License
 710   * * as published by the Free Software Foundation; either version 2
 711   * * of the License, or (at your option) any later version,
 712   * * provided that any use properly credits the author.
 713   * * This program is distributed in the hope that it will be useful,
 714   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 715   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 716   * * GNU General Public License for more details at http://www.gnu.org * * */
 717
 718   var numbers=".0123456789";
 719   function isNumeric(x) {
 720     // is x a String or a character?
 721     if(x.length>1) {
 722       // remove negative sign
 723       x=Math.abs(x)+"";
 724       for(j=0;j<x.length;j++) {
 725         // call isNumeric recursively for each character
 726         number=isNumeric(x.substring(j,j+1));
 727         if(!number) return number;
 728       }
 729       return number;
 730     }
 731     else {
 732       // if x is number return true
 733       if(numbers.indexOf(x)>=0) return true;
 734       return false;
 735     }
 736   }
 737
 738
 739 function hideOrShowFeeds(doc, hide) {
 740
 741         var fd = getFeedsContext().document;
 742
 743         var list = fd.getElementById("feedList");
 744
 745         if (fd.getElementById("feedCatHolder")) {
 746
 747                 var feeds = fd.getElementById("feedList");
 748                 var child = feeds.firstChild;
 749
 750                 while (child) {
 751
 752                         if (child.id == "feedCatHolder") {
 753                                 hideOrShowFeedsCategory(fd, child.firstChild, hide, child.previousSibling);
 754                         }
 755
 756                         child = child.nextSibling;
 757                 }
 758
 759         } else {
 760                 hideOrShowFeedsCategory(fd, fd.getElementById("feedList"), hide);
 761         }
 762 }
 763
 764 function hideOrShowFeedsCategory(doc, node, hide, cat_node) {
 765
 766 //      debug("hideOrShowFeedsCategory: " + node + " (" + hide + ")");
 767
 768         var cat_unread = 0;
 769
 770         if (node.hasChildNodes() && node.firstChild.nextSibling != false) {
 771                 for (i = 0; i < node.childNodes.length; i++) {
 772                         if (node.childNodes[i].nodeName != "LI") { continue; }
 773
 774                         var has_unread = (node.childNodes[i].className != "feed");
 775
 776 //                      debug(node.childNodes[i].id + " --> " + has_unread);
 777
 778                         if (hide && !has_unread) {
 779                                 node.childNodes[i].style.display = "none";
 780                         }
 781
 782                         if (!hide) {
 783                                 node.childNodes[i].style.display = "list-item";
 784                         }
 785
 786                         if (has_unread) {
 787                                 cat_unread++;
 788                         }
 789
 790                 }
 791         }
 792
 793         if (cat_unread == 0) {
 794                 if (hide) {
 795                         cat_node.style.display = "none";
 796                 } else {
 797                         cat_node.style.display = "list-item";
 798                 }
 799         }
 800
 801 //      debug("unread for category: " + cat_unread);
 802 }
 803
 804 function selectTableRow(r, do_select) {
 805         r.className = r.className.replace("Selected", "");
 806
 807         if (do_select) {
 808                 r.className = r.className + "Selected";
 809         }
 810 }
 811
 812 function selectTableRowById(elem_id, check_id, do_select) {
 813
 814         try {
 815
 816                 var row = document.getElementById(elem_id);
 817
 818                 if (row) {
 819                         selectTableRow(row, do_select);
 820                 }
 821
 822                 var check = document.getElementById(check_id);
 823
 824                 if (check) {
 825                         check.checked = do_select;
 826                 }
 827         } catch (e) {
 828                 exception_error("selectTableRowById", e);
 829         }
 830 }
 831
 832 function selectTableRowsByIdPrefix(content_id, prefix, check_prefix, do_select,
 833         classcheck, reset_others) {
 834
 835         var content = document.getElementById(content_id);
 836
 837         if (!content) {
 838                 alert("[selectTableRows] Element " + content_id + " not found.");
 839                 return;
 840         }
 841
 842         for (i = 0; i < content.rows.length; i++) {
 843                 if (!classcheck || content.rows[i].className.match(classcheck)) {
 844
 845                         if (content.rows[i].id.match(prefix)) {
 846                                 selectTableRow(content.rows[i], do_select);
 847
 848                                 var row_id = content.rows[i].id.replace(prefix, "");
 849                                 var check = document.getElementById(check_prefix + row_id);
 850
 851                                 if (check) {
 852                                         check.checked = do_select;
 853                                 }
 854                         } else if (reset_others) {
 855                                 selectTableRow(content.rows[i], false);
 856
 857                                 var row_id = content.rows[i].id.replace(prefix, "");
 858                                 var check = document.getElementById(check_prefix + row_id);
 859
 860                                 if (check) {
 861                                         check.checked = false;
 862                                 }
 863
 864                         }
 865                 } else if (reset_others) {
 866                         selectTableRow(content.rows[i], false);
 867
 868                         var row_id = content.rows[i].id.replace(prefix, "");
 869                         var check = document.getElementById(check_prefix + row_id);
 870
 871                         if (check) {
 872                                 check.checked = false;
 873                         }
 874
 875                 }
 876         }
 877 }
 878
 879 function getSelectedTableRowIds(content_id, prefix) {
 880
 881         var content = document.getElementById(content_id);
 882
 883         if (!content) {
 884                 alert("[getSelectedTableRowIds] Element " + content_id + " not found.");
 885                 return;
 886         }
 887
 888         var sel_rows = new Array();
 889
 890         for (i = 0; i < content.rows.length; i++) {
 891                 if (content.rows[i].id.match(prefix) &&
 892                                 content.rows[i].className.match("Selected")) {
 893
 894                         var row_id = content.rows[i].id.replace(prefix + "-", "");
 895                         sel_rows.push(row_id);
 896                 }
 897         }
 898
 899         return sel_rows;
 900
 901 }
 902
 903 function toggleSelectRowById(sender, id) {
 904         var row = document.getElementById(id);
 905
 906         if (sender.checked) {
 907                 if (!row.className.match("Selected")) {
 908                         row.className = row.className + "Selected";
 909                 }
 910         } else {
 911                 if (row.className.match("Selected")) {
 912                         row.className = row.className.replace("Selected", "");
 913                 }
 914         }
 915 }
 916
 917 function toggleSelectListRow(sender) {
 918         var parent_row = sender.parentNode;
 919
 920         if (sender.checked) {
 921                 if (!parent_row.className.match("Selected")) {
 922                         parent_row.className = parent_row.className + "Selected";
 923                 }
 924         } else {
 925                 if (parent_row.className.match("Selected")) {
 926                         parent_row.className = parent_row.className.replace("Selected", "");
 927                 }
 928         }
 929 }
 930
 931
 932 function toggleSelectRow(sender) {
 933         var parent_row = sender.parentNode.parentNode;
 934
 935         if (sender.checked) {
 936                 if (!parent_row.className.match("Selected")) {
 937                         parent_row.className = parent_row.className + "Selected";
 938                 }
 939         } else {
 940                 if (parent_row.className.match("Selected")) {
 941                         parent_row.className = parent_row.className.replace("Selected", "");
 942                 }
 943         }
 944 }
 945
 946 function openExternalUrl(url) {
 947         var w = window.open(url);
 948 }
 949
 950 function getRelativeFeedId(list, id, direction, unread_only) {
 951         if (!id) {
 952                 if (direction == "next") {
 953                         for (i = 0; i < list.childNodes.length; i++) {
 954                                 var child = list.childNodes[i];
 955                                 if (child.id && child.id == "feedCatHolder") {
 956                                         if (child.lastChild) {
 957                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 958                                                 if (cr) return cr;
 959                                         }
 960                                 } else if (child.id && child.id.match("FEEDR-")) {
 961                                         return child.id.replace('FEEDR-', '');
 962                                 }
 963                         }
 964                 }
 965
 966                 // FIXME select last feed doesn't work when only unread feeds are visible
 967
 968                 if (direction == "prev") {
 969                         for (i = list.childNodes.length-1; i >= 0; i--) {
 970                                 var child = list.childNodes[i];
 971                                 if (child.id == "feedCatHolder") {
 972                                         if (child.firstChild) {
 973                                                 var cr = getRelativeFeedId(child.firstChild, id, direction);
 974                                                 if (cr) return cr;
 975                                         }
 976                                 } else if (child.id.match("FEEDR-")) {
 977
 978                                         if (getInitParam("hide_read_feeds") == 1) {
 979                                                 if (child.className != "feed") {
 980                                                         alert(child.className);
 981                                                         return child.id.replace('FEEDR-', '');
 982                                                 }
 983                                         } else {
 984                                                         return child.id.replace('FEEDR-', '');
 985                                         }
 986                                 }
 987                         }
 988                 }
 989         } else {
 990
 991                 var feed = list.ownerDocument.getElementById("FEEDR-" + getActiveFeedId());
 992
 993                 if (getInitParam("hide_read_feeds") == 1) {
 994                         unread_only = true;
 995                 }
 996
 997                 if (direction == "next") {
 998
 999                         var e = feed;
1000
1001                         while (e) {
1002
1003                                 if (e.nextSibling) {
1004
1005                                         e = e.nextSibling;
1006
1007                                 } else if (e.parentNode.parentNode.nextSibling) {
1008
1009                                         var this_cat = e.parentNode.parentNode;
1010
1011                                         e = false;
1012
1013                                         if (this_cat && this_cat.nextSibling) {
1014                                                 while (!e && this_cat.nextSibling) {
1015                                                         this_cat = this_cat.nextSibling;
1016                                                         if (this_cat.id == "feedCatHolder") {
1017                                                                 e = this_cat.firstChild.firstChild;
1018                                                         }
1019                                                 }
1020                                         }
1021
1022                                 } else {
1023                                         e = false;
1024                            }
1025
1026                                 if (e) {
1027                                         if (!unread_only || (unread_only && e.className != "feed" &&
1028                                                         e.className != "error"))        {
1029                                                 return e.id.replace("FEEDR-", "");
1030                                         }
1031                                 }
1032                         }
1033
1034                 } else if (direction == "prev") {
1035
1036                         var e = feed;
1037
1038                         while (e) {
1039
1040                                 if (e.previousSibling) {
1041
1042                                         e = e.previousSibling;
1043
1044                                 } else if (e.parentNode.parentNode.previousSibling) {
1045
1046                                         var this_cat = e.parentNode.parentNode;
1047
1048                                         e = false;
1049
1050                                         if (this_cat && this_cat.previousSibling) {
1051                                                 while (!e && this_cat.previousSibling) {
1052                                                         this_cat = this_cat.previousSibling;
1053                                                         if (this_cat.id == "feedCatHolder") {
1054                                                                 e = this_cat.firstChild.lastChild;
1055                                                         }
1056                                                 }
1057                                         }
1058
1059                                 } else {
1060                                         e = false;
1061                            }
1062
1063                                 if (e) {
1064                                         if (!unread_only || (unread_only && e.className != "feed" &&
1065                                                         e.className != "error"))        {
1066                                                 return e.id.replace("FEEDR-", "");
1067                                         }
1068                                 }
1069                         }
1070                 }
1071         }
1072 }
1073
1074 function showBlockElement(id) {
1075         var elem = document.getElementById(id);
1076
1077         if (elem) {
1078                 elem.style.display = "block";
1079         } else {
1080                 alert("[showBlockElement] can't find element with id " + id);
1081         }
1082 }
1083
1084 function hideParentElement(e) {
1085         e.parentNode.style.display = "none";
1086 }
1087
1088 function dropboxSelect(e, v) {
1089         for (i = 0; i < e.length; i++) {
1090                 if (e[i].value == v) {
1091                         e.selectedIndex = i;
1092                         break;
1093                 }
1094         }
1095 }
1096
1097 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
1098 // bugfixed just a little bit :-)
1099 function getURLParam(strParamName){
1100   var strReturn = "";
1101   var strHref = window.location.href;
1102
1103   if (strHref.indexOf("#") == strHref.length-1) {
1104                 strHref = strHref.substring(0, strHref.length-1);
1105   }
1106
1107   if ( strHref.indexOf("?") > -1 ){
1108     var strQueryString = strHref.substr(strHref.indexOf("?"));
1109     var aQueryString = strQueryString.split("&");
1110     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
1111       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
1112         var aParam = aQueryString[iParam].split("=");
1113         strReturn = aParam[1];
1114         break;
1115       }
1116     }
1117   }
1118   return strReturn;
1119 }
1120
1121 function leading_zero(p) {
1122         var s = String(p);
1123         if (s.length == 1) s = "0" + s;
1124         return s;
1125 }
1126
1127 function closeInfoBox(cleanup) {
1128         var box = document.getElementById('infoBox');
1129         var shadow = document.getElementById('infoBoxShadow');
1130
1131         if (shadow) {
1132                 shadow.style.display = "none";
1133         } else if (box) {
1134                 box.style.display = "none";
1135         }
1136
1137         if (cleanup) box.innerHTML = "&nbsp;";
1138
1139         enableHotkeys();
1140
1141         return false;
1142 }
1143
1144
1145 function displayDlg(id, param) {
1146
1147         if (!xmlhttp_ready(xmlhttp)) {
1148                 printLockingError();
1149                 return
1150         }
1151
1152         notify("");
1153
1154         xmlhttp.open("GET", "backend.php?op=dlg&id=" +
1155                 param_escape(id) + "&param=" + param_escape(param), true);
1156         xmlhttp.onreadystatechange=infobox_callback;
1157         xmlhttp.send(null);
1158
1159         disableHotkeys();
1160
1161         return false;
1162 }
1163
1164 function infobox_submit_callback() {
1165         if (xmlhttp.readyState == 4) {
1166                 closeInfoBox();
1167
1168                 // called from prefs, reload tab
1169                 if (active_tab) {
1170                         selectTab(active_tab, false);
1171                 }
1172
1173                 notify(xmlhttp.responseText);
1174
1175         }
1176 }
1177
1178 function infobox_callback() {
1179         if (xmlhttp.readyState == 4) {
1180                 var box = document.getElementById('infoBox');
1181                 var shadow = document.getElementById('infoBoxShadow');
1182                 if (box) {
1183                         box.innerHTML=xmlhttp.responseText;
1184                         if (shadow) {
1185                                 shadow.style.display = "block";
1186                         } else {
1187                                 box.style.display = "block";
1188                         }
1189                 }
1190         }
1191 }
1192
1193 function qaddFilter() {
1194
1195         if (!xmlhttp_ready(xmlhttp)) {
1196                 printLockingError();
1197                 return
1198         }
1199
1200         var query = Form.serialize("filter_add_form");
1201
1202         xmlhttp.open("GET", "backend.php?" + query, true);
1203         xmlhttp.onreadystatechange=infobox_submit_callback;
1204         xmlhttp.send(null);
1205
1206         return true;
1207 }
1208
1209 function toggleSubmitNotEmpty(e, submit_id) {
1210         try {
1211                 document.getElementById(submit_id).disabled = (e.value == "")
1212         } catch (e) {
1213                 exception_error("toggleSubmitNotEmpty", e);
1214         }
1215 }
1216
1217 function isValidURL(s) {
1218         return s.match("http://") != null || s.match("https://") != null;
1219 }
1220
1221 function qafAdd() {
1222
1223         if (!xmlhttp_ready(xmlhttp)) {
1224                 printLockingError();
1225                 return
1226         }
1227
1228         notify("Adding feed...");
1229
1230         closeInfoBox();
1231
1232         var feeds_doc = getFeedsContext().document;
1233
1234         feeds_doc.location.href = "backend.php?op=error&msg=Loading,%20please wait...";
1235
1236         var query = Form.serialize("feed_add_form");
1237
1238         xmlhttp.open("GET", "backend.php?" + query, true);
1239         xmlhttp.onreadystatechange=dlg_frefresh_callback;
1240         xmlhttp.send(null);
1241 }
1242
1243 function filterCR(e)
1244 {
1245      var key;
1246
1247      if(window.event)
1248           key = window.event.keyCode;     //IE
1249      else
1250           key = e.which;     //firefox
1251
1252      if(key == 13)
1253           return false;
1254      else
1255           return true;
1256 }
1257
1258 function getMainContext() {
1259         if (parent.window != window) {
1260                 return parent.window;
1261         } else {
1262                 return this.window;
1263         }
1264 }
1265
1266 function getFeedsContext() {
1267         try {
1268                 return getMainContext().frames["feeds-frame"];
1269         } catch (e) {
1270                 exception_error("getFeedsContext", e);
1271         }
1272 }
1273
1274
1275 function getHeadlinesContext() {
1276         try {
1277                 return getMainContext().frames["headlines-frame"];
1278         } catch (e) {
1279                 exception_error("getHeadlinesContext", e);
1280         }
1281 }
1282
1283 var debug_last_class = "even";
1284
1285 function debug(msg) {
1286         var ctx = getMainContext();
1287
1288         if (ctx.debug_last_class == "even") {
1289                 ctx.debug_last_class = "odd";
1290         } else {
1291                 ctx.debug_last_class = "even";
1292         }
1293
1294         var c = ctx.document.getElementById('debug_output');
1295         if (c && c.style.display == "block") {
1296                 while (c.lastChild != 'undefined' && c.childNodes.length > 100) {
1297                         c.removeChild(c.lastChild);
1298                 }
1299
1300                 var d = new Date();
1301                 var ts = leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
1302                         ":" + leading_zero(d.getSeconds());
1303                 c.innerHTML = "<li class=\"" + ctx.debug_last_class + "\"><span class=\"debugTS\">[" + ts + "]</span> " +
1304                         msg + "</li>" + c.innerHTML;
1305         }
1306 }
1307
1308 function getInitParam(key) {
1309         return getMainContext().init_params[key];
1310 }
1311
1312 function storeInitParam(key, value, is_client) {
1313         try {
1314                 if (!is_client) {
1315                         if (getMainContext().init_params[key] != value) {
1316                                 debug("storeInitParam: " + key + " => " + value);
1317                                 //new Ajax.Request("backend.php?op=rpc&subop=storeParam&key=" +
1318                                 //      param_escape(key) + "&value=" + param_escape(value));
1319                                 var f = getMainContext().document.getElementById("backReqBox");
1320                                 f.src = "backend.php?op=rpc&subop=storeParam&key=" +
1321                                         param_escape(key) + "&value=" + param_escape(value);
1322                         }
1323                 }
1324                 getMainContext().init_params[key] = value;
1325         } catch (e) {
1326                 exception_error("storeInitParam", e);
1327         }
1328 }
1329
1330 /*
1331 function storeInitParams(params, is_client) {
1332         try {
1333                 var s = "";
1334
1335                 for (k in params) {
1336                         if (getMainContext().init_params[k] != params[k]) {
1337                                 s += k + "=" + params[k] + ";";
1338                                 getMainContext().init_params[k] = params[k];
1339                         }
1340                 }
1341
1342                 debug("storeInitParams: " + s);
1343
1344                 if (!is_client) {
1345                         new Ajax.Request("backend.php?op=rpc&subop=storeParams&str=" + s);
1346                 }
1347         } catch (e) {
1348                 exception_error("storeInitParams", e);
1349         }
1350 }*/
1351
1352 function fatalError(code, message) {
1353         try {
1354                 var fe = document.getElementById("fatal_error");
1355                 var fc = document.getElementById("fatal_error_msg");
1356
1357                 fc.innerHTML = "Code " + code + ": " + message;
1358
1359                 fe.style.display = "block";
1360
1361         } catch (e) {
1362                 exception_error("fatalError", e);
1363         }
1364 }
1365
1366 function getFeedName(id, is_cat) {
1367         var d = getFeedsContext().document;
1368
1369         var e;
1370
1371         if (is_cat) {
1372                 e = d.getElementById("FCATN-" + id);
1373         } else {
1374                 e = d.getElementById("FEEDN-" + id);
1375         }
1376         if (e) {
1377                 return e.innerHTML.stripTags();
1378         } else {
1379                 return null;
1380         }
1381 }