functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var loading_progress = 0;
   4 var sanity_check_done = false;
   5
   6 /* add method to remove element from array */
   7
   8 Array.prototype.remove = function(s) {
   9         for (var i=0; i < this.length; i++) {
  10                 if (s == this[i]) this.splice(i, 1);
  11         }
  12 }
  13
  14 /* create console.log if it doesn't exist */
  15
  16 if (!window.console) console = {};
  17 console.log = console.log || function(msg) { };
  18 console.warn = console.warn || function(msg) { };
  19 console.error = console.error || function(msg) { };
  20
  21 function exception_error(location, e, ext_info) {
  22         var msg = format_exception_error(location, e);
  23
  24         if (!ext_info) ext_info = false;
  25
  26         try {
  27
  28                 if (ext_info) {
  29                         if (ext_info.responseText) {
  30                                 ext_info = ext_info.responseText;
  31                         }
  32                 }
  33
  34                 var content = "<div class=\"fatalError\">" +
  35                         "<pre>" + msg + "</pre>";
  36
  37                 if (ext_info) {
  38                         content += "<div><b>Additional information:</b></div>" +
  39                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
  40                 }
  41
  42                 content += "<div><b>Stack trace:</b></div>" +
  43                         "<textarea readonly=\"1\">" + e.stack + "</textarea>";
  44
  45 //              content += "<div style='text-align : center'>" +
  46 //                      "<button onclick=\"closeInfoBox()\">" +
  47 //                      "Close this window" + "</button></div>";
  48
  49                 content += "</div>";
  50
  51                 // TODO: add code to automatically report errors to tt-rss.org
  52
  53                 var dialog = new dijit.Dialog({
  54                         title: "Unhandled exception",
  55                         style: "width: 600px",
  56                         content: content});
  57
  58                 dialog.show();
  59
  60         } catch (e) {
  61                 alert(msg);
  62         }
  63
  64 }
  65
  66 function format_exception_error(location, e) {
  67         var msg;
  68
  69         if (e.fileName) {
  70                 var base_fname = e.fileName.substring(e.fileName.lastIndexOf("/") + 1);
  71
  72                 msg = "Exception: " + e.name + ", " + e.message +
  73                         "\nFunction: " + location + "()" +
  74                         "\nLocation: " + base_fname + ":" + e.lineNumber;
  75
  76         } else if (e.description) {
  77                 msg = "Exception: " + e.description + "\nFunction: " + location + "()";
  78         } else {
  79                 msg = "Exception: " + e + "\nFunction: " + location + "()";
  80         }
  81
  82         console.error("EXCEPTION: " + msg);
  83
  84         return msg;
  85 }
  86
  87
  88 function disableHotkeys() {
  89         hotkeys_enabled = false;
  90 }
  91
  92 function enableHotkeys() {
  93         hotkeys_enabled = true;
  94 }
  95
  96 function param_escape(arg) {
  97         if (typeof encodeURIComponent != 'undefined')
  98                 return encodeURIComponent(arg);
  99         else
 100                 return escape(arg);
 101 }
 102
 103 function param_unescape(arg) {
 104         if (typeof decodeURIComponent != 'undefined')
 105                 return decodeURIComponent(arg);
 106         else
 107                 return unescape(arg);
 108 }
 109
 110 var notify_hide_timerid = false;
 111
 112 function hide_notify() {
 113         var n = $("notify");
 114         if (n) {
 115                 n.style.display = "none";
 116         }
 117 }
 118
 119 function notify_silent_next() {
 120         notify_silent = true;
 121 }
 122
 123 function notify_real(msg, no_hide, n_type) {
 124
 125         if (notify_silent) {
 126                 notify_silent = false;
 127                 return;
 128         }
 129
 130         var n = $("notify");
 131         var nb = $("notify_body");
 132
 133         if (!n || !nb) return;
 134
 135         if (notify_hide_timerid) {
 136                 window.clearTimeout(notify_hide_timerid);
 137         }
 138
 139         if (msg == "") {
 140                 if (n.style.display == "block") {
 141                         notify_hide_timerid = window.setTimeout("hide_notify()", 0);
 142                 }
 143                 return;
 144         } else {
 145                 n.style.display = "block";
 146         }
 147
 148         /* types:
 149
 150                 1 - generic
 151                 2 - progress
 152                 3 - error
 153                 4 - info
 154
 155         */
 156
 157         if (typeof __ != 'undefined') {
 158                 msg = __(msg);
 159         }
 160
 161         if (n_type == 1) {
 162                 n.className = "notify";
 163         } else if (n_type == 2) {
 164                 n.className = "notifyProgress";
 165                 msg = "<img src='"+getInitParam("sign_progress")+"'> " + msg;
 166         } else if (n_type == 3) {
 167                 n.className = "notifyError";
 168                 msg = "<img src='"+getInitParam("sign_excl")+"'> " + msg;
 169         } else if (n_type == 4) {
 170                 n.className = "notifyInfo";
 171                 msg = "<img src='"+getInitParam("sign_info")+"'> " + msg;
 172         }
 173
 174 //      msg = "<img src='images/live_com_loading.gif'> " + msg;
 175
 176         nb.innerHTML = msg;
 177
 178         if (!no_hide) {
 179                 notify_hide_timerid = window.setTimeout("hide_notify()", 3000);
 180         }
 181 }
 182
 183 function notify(msg, no_hide) {
 184         notify_real(msg, no_hide, 1);
 185 }
 186
 187 function notify_progress(msg, no_hide) {
 188         notify_real(msg, no_hide, 2);
 189 }
 190
 191 function notify_error(msg, no_hide) {
 192         notify_real(msg, no_hide, 3);
 193
 194 }
 195
 196 function notify_info(msg, no_hide) {
 197         notify_real(msg, no_hide, 4);
 198 }
 199
 200 function setCookie(name, value, lifetime, path, domain, secure) {
 201
 202         var d = false;
 203
 204         if (lifetime) {
 205                 d = new Date();
 206                 d.setTime(d.getTime() + (lifetime * 1000));
 207         }
 208
 209         console.log("setCookie: " + name + " => " + value + ": " + d);
 210
 211         int_setCookie(name, value, d, path, domain, secure);
 212
 213 }
 214
 215 function int_setCookie(name, value, expires, path, domain, secure) {
 216         document.cookie= name + "=" + escape(value) +
 217                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
 218                 ((path) ? "; path=" + path : "") +
 219                 ((domain) ? "; domain=" + domain : "") +
 220                 ((secure) ? "; secure" : "");
 221 }
 222
 223 function delCookie(name, path, domain) {
 224         if (getCookie(name)) {
 225                 document.cookie = name + "=" +
 226                 ((path) ? ";path=" + path : "") +
 227                 ((domain) ? ";domain=" + domain : "" ) +
 228                 ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
 229         }
 230 }
 231
 232
 233 function getCookie(name) {
 234
 235         var dc = document.cookie;
 236         var prefix = name + "=";
 237         var begin = dc.indexOf("; " + prefix);
 238         if (begin == -1) {
 239             begin = dc.indexOf(prefix);
 240             if (begin != 0) return null;
 241         }
 242         else {
 243             begin += 2;
 244         }
 245         var end = document.cookie.indexOf(";", begin);
 246         if (end == -1) {
 247             end = dc.length;
 248         }
 249         return unescape(dc.substring(begin + prefix.length, end));
 250 }
 251
 252 function gotoPreferences() {
 253         document.location.href = "prefs.php";
 254 }
 255
 256 function gotoMain() {
 257         document.location.href = "tt-rss.php";
 258 }
 259
 260 function gotoExportOpml() {
 261         document.location.href = "opml.php?op=Export";
 262 }
 263
 264
 265 /** * @(#)isNumeric.js * * Copyright (c) 2000 by Sundar Dorai-Raj
 266   * * @author Sundar Dorai-Raj
 267   * * Email: sdoraira@vt.edu
 268   * * This program is free software; you can redistribute it and/or
 269   * * modify it under the terms of the GNU General Public License
 270   * * as published by the Free Software Foundation; either version 2
 271   * * of the License, or (at your option) any later version,
 272   * * provided that any use properly credits the author.
 273   * * This program is distributed in the hope that it will be useful,
 274   * * but WITHOUT ANY WARRANTY; without even the implied warranty of
 275   * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 276   * * GNU General Public License for more details at http://www.gnu.org * * */
 277
 278   var numbers=".0123456789";
 279   function isNumeric(x) {
 280     // is x a String or a character?
 281     if(x.length>1) {
 282       // remove negative sign
 283       x=Math.abs(x)+"";
 284       for(j=0;j<x.length;j++) {
 285         // call isNumeric recursively for each character
 286         number=isNumeric(x.substring(j,j+1));
 287         if(!number) return number;
 288       }
 289       return number;
 290     }
 291     else {
 292       // if x is number return true
 293       if(numbers.indexOf(x)>=0) return true;
 294       return false;
 295     }
 296   }
 297
 298
 299 function toggleSelectRowById(sender, id) {
 300         var row = $(id);
 301         return toggleSelectRow(sender, row);
 302 }
 303
 304 function toggleSelectListRow(sender) {
 305         var row = sender.parentNode;
 306         return toggleSelectRow(sender, row);
 307 }
 308
 309 /* this is for dijit Checkbox */
 310 function toggleSelectListRow2(sender) {
 311         var row = sender.domNode.parentNode;
 312         return toggleSelectRow(sender, row);
 313 }
 314
 315 function tSR(sender, row) {
 316         return toggleSelectRow(sender, row);
 317 }
 318
 319 /* this is for dijit Checkbox */
 320 function toggleSelectRow2(sender, row) {
 321
 322         if (!row) row = sender.domNode.parentNode.parentNode;
 323
 324         if (sender.checked && !row.hasClassName('Selected'))
 325                 row.addClassName('Selected');
 326         else
 327                 row.removeClassName('Selected');
 328 }
 329
 330
 331 function toggleSelectRow(sender, row) {
 332
 333         if (!row) row = sender.parentNode.parentNode;
 334
 335         if (sender.checked && !row.hasClassName('Selected'))
 336                 row.addClassName('Selected');
 337         else
 338                 row.removeClassName('Selected');
 339 }
 340
 341 function checkboxToggleElement(elem, id) {
 342         if (elem.checked) {
 343                 Effect.Appear(id, {duration : 0.5});
 344         } else {
 345                 Effect.Fade(id, {duration : 0.5});
 346         }
 347 }
 348
 349 function dropboxSelect(e, v) {
 350         for (i = 0; i < e.length; i++) {
 351                 if (e[i].value == v) {
 352                         e.selectedIndex = i;
 353                         break;
 354                 }
 355         }
 356 }
 357
 358 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 359 // bugfixed just a little bit :-)
 360 function getURLParam(strParamName){
 361   var strReturn = "";
 362   var strHref = window.location.href;
 363
 364   if (strHref.indexOf("#") == strHref.length-1) {
 365                 strHref = strHref.substring(0, strHref.length-1);
 366   }
 367
 368   if ( strHref.indexOf("?") > -1 ){
 369     var strQueryString = strHref.substr(strHref.indexOf("?"));
 370     var aQueryString = strQueryString.split("&");
 371     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 372       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 373         var aParam = aQueryString[iParam].split("=");
 374         strReturn = aParam[1];
 375         break;
 376       }
 377     }
 378   }
 379   return strReturn;
 380 }
 381
 382 function leading_zero(p) {
 383         var s = String(p);
 384         if (s.length == 1) s = "0" + s;
 385         return s;
 386 }
 387
 388 function make_timestamp() {
 389         var d = new Date();
 390
 391         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
 392                         ":" + leading_zero(d.getSeconds());
 393 }
 394
 395
 396 function closeErrorBox() {
 397
 398         if (Element.visible("errorBoxShadow")) {
 399                 Element.hide("dialog_overlay");
 400                 Element.hide("errorBoxShadow");
 401
 402                 enableHotkeys();
 403         }
 404
 405         return false;
 406 }
 407
 408 function closeInfoBox(cleanup) {
 409         try {
 410                 enableHotkeys();
 411
 412                 dialog = dijit.byId("infoBox");
 413
 414                 if (dialog)     dialog.hide();
 415
 416         } catch (e) {
 417                 //exception_error("closeInfoBox", e);
 418         }
 419         return false;
 420 }
 421
 422
 423 function displayDlg(id, param, callback) {
 424
 425         notify_progress("Loading, please wait...", true);
 426
 427         var query = "?op=dlg&id=" +
 428                 param_escape(id) + "&param=" + param_escape(param);
 429
 430         new Ajax.Request("backend.php", {
 431                 parameters: query,
 432                 onComplete: function (transport) {
 433                         infobox_callback2(transport);
 434                         if (callback) callback(transport);
 435                 } });
 436
 437         return false;
 438 }
 439
 440 function infobox_submit_callback2(transport) {
 441         closeInfoBox();
 442
 443         try {
 444                 // called from prefs, reload tab
 445                 if (typeof active_tab != 'undefined' && active_tab) {
 446                         selectTab(active_tab, false);
 447                 }
 448         } catch (e) { }
 449
 450         if (transport.responseText) {
 451                 notify_info(transport.responseText);
 452         }
 453 }
 454
 455 function infobox_callback2(transport) {
 456         try {
 457                 var dialog = false;
 458
 459                 if (dijit.byId("infoBox")) {
 460                         dialog = dijit.byId("infoBox");
 461                 }
 462
 463                 //console.log("infobox_callback2");
 464                 notify('');
 465
 466                 var content;
 467                 var dtitle = "Dialog";
 468
 469                 if (transport.responseXML) {
 470                         var dlg = transport.responseXML.getElementsByTagName("dlg")[0];
 471
 472                         var title = transport.responseXML.getElementsByTagName("title")[0];
 473                         if (title)
 474                                 title = title.firstChild.nodeValue;
 475
 476                         var content = transport.responseXML.getElementsByTagName("content")[0];
 477
 478                         content = content.firstChild.nodeValue;
 479
 480                 } else {
 481                         content = transport.responseText;
 482                 }
 483
 484                 if (!dialog) {
 485                         dialog = new dijit.Dialog({
 486                                 title: title,
 487                                 id: 'infoBox',
 488                                 style: "width: 600px",
 489                                 onCancel: function() {
 490                                         return true;
 491                                 },
 492                                 onExecute: function() {
 493                                         return true;
 494                                 },
 495                                 onClose: function() {
 496                                         return true;
 497                                         },
 498                                 content: content});
 499                 } else {
 500                         dialog.attr('title', title);
 501                         dialog.attr('content', content);
 502                 }
 503
 504                 dialog.show();
 505
 506                 notify("");
 507         } catch (e) {
 508                 exception_error("infobox_callback2", e);
 509         }
 510 }
 511
 512 function createFilter() {
 513
 514         try {
 515
 516                 var form = document.forms['filter_add_form'];
 517                 var reg_exp = form.reg_exp.value;
 518
 519                 if (reg_exp == "") {
 520                         alert(__("Can't add filter: nothing to match on."));
 521                         return false;
 522                 }
 523
 524                 var query = "?op=rpc&subop=verifyRegexp&reg_exp=" + param_escape(reg_exp);
 525
 526                 notify_progress("Verifying regular expression...");
 527
 528                 new Ajax.Request("backend.php", {
 529                                 parameters: query,
 530                                 onComplete: function(transport) {
 531                                         handle_rpc_reply(transport);
 532
 533                                         var response = transport.responseXML;
 534
 535                                         if (response) {
 536                                                 var s = response.getElementsByTagName("status")[0].firstChild.nodeValue;
 537
 538                                                 notify('');
 539
 540                                                 if (s == "INVALID") {
 541                                                         alert("Match regular expression seems to be invalid.");
 542                                                         return;
 543                                                 } else {
 544
 545                                                         var query = Form.serialize("filter_add_form");
 546
 547                                                         // we can be called from some other tab in Prefs
 548                                                         if (typeof active_tab != 'undefined' && active_tab) {
 549                                                                 active_tab = "filterConfig";
 550                                                         }
 551
 552                                                         new Ajax.Request("backend.php?" + query, {
 553                                                                 onComplete: function (transport) {
 554                                                                         infobox_submit_callback2(transport);
 555                                                                 } });
 556
 557                                                         return true;
 558                                                 }
 559                                         }
 560
 561                         } });
 562
 563         } catch (e) {
 564                 exception_error("createFilter", e);
 565         }
 566 }
 567
 568 function isValidURL(s) {
 569         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
 570 }
 571
 572 function subscribeToFeed() {
 573
 574         try {
 575
 576         var form = document.forms['feed_add_form'];
 577         var feed_url = form.feed_url.value;
 578
 579         if (feed_url == "") {
 580                 alert(__("Can't subscribe: no feed URL given."));
 581                 return false;
 582         }
 583
 584         notify_progress(__("Subscribing to feed..."), true);
 585
 586         var query = Form.serialize("feed_add_form");
 587
 588         console.log("subscribe q: " + query);
 589
 590         Form.disable("feed_add_form");
 591
 592         new Ajax.Request("backend.php", {
 593                 parameters: query,
 594                 onComplete: function(transport) {
 595                         try {
 596
 597                                 if (!transport.responseXML) {
 598                                         console.log(transport.responseText);
 599                                         alert(__("Server error while trying to subscribe to specified feed."));
 600                                         return;
 601                                 }
 602
 603                                 var result = transport.responseXML.getElementsByTagName('result')[0];
 604                                 var rc = parseInt(result.getAttribute('code'));
 605
 606                                 Form.enable("feed_add_form");
 607
 608                                 notify('');
 609
 610                                 switch (rc) {
 611                                 case 1:
 612                                         closeInfoBox();
 613                                         notify_info(__("Subscribed to %s").replace("%s", feed_url));
 614
 615                                         if (inPreferences()) {
 616                                                 updateFeedList();
 617                                         } else {
 618                                                 setTimeout('updateFeedList(false, false)', 50);
 619                                         }
 620                                         break;
 621                                 case 2:
 622                                         alert(__("Specified URL seems to be invalid."));
 623                                         break;
 624                                 case 3:
 625                                         alert(__("Specified URL doesn't seem to contain any feeds."));
 626                                         break;
 627                                 case 4:
 628                                         new Ajax.Request("backend.php", {
 629                                                 parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
 630                                                 onComplete: function(transport) {
 631                                                         var result = transport.responseXML.getElementsByTagName('urls')[0];
 632                                                         var feeds = JSON.parse(result.firstChild.nodeValue);
 633                                                         var select = document.getElementById("faad_feeds_container_select");
 634
 635                                                         while (select.hasChildNodes()) {
 636                                                                 select.removeChild(elem.firstChild);
 637                                                         }
 638                                                         var count = 0;
 639                                                         for (var feedUrl in feeds) {
 640                                                                 select.insert(new Option(feeds[feedUrl], feedUrl, false));
 641                                                                 count++;
 642                                                         }
 643                                                         if (count > 5) count = 5;
 644                                                         select.size = count;
 645
 646                                                         Effect.Appear('fadd_feeds_container', {duration : 0.5});
 647                                                 }
 648                                         });
 649                                         break;
 650                                 case 5:
 651                                         alert(__("Couldn't download the specified URL."));
 652                                         break;
 653                                 case 0:
 654                                         alert(__("You are already subscribed to this feed."));
 655                                         break;
 656                                 }
 657
 658                         } catch (e) {
 659                                 exception_error("subscribeToFeed", e);
 660                         }
 661
 662                 } });
 663
 664         } catch (e) {
 665                 exception_error("subscribeToFeed", e);
 666         }
 667
 668         return false;
 669 }
 670
 671 function filterCR(e, f)
 672 {
 673      var key;
 674
 675      if(window.event)
 676           key = window.event.keyCode;     //IE
 677      else
 678           key = e.which;     //firefox
 679
 680         if (key == 13) {
 681                 if (typeof f != 'undefined') {
 682                         f();
 683                         return false;
 684                 } else {
 685                         return false;
 686                 }
 687         } else {
 688                 return true;
 689         }
 690 }
 691
 692 function getInitParam(key) {
 693         return init_params[key];
 694 }
 695
 696 function setInitParam(key, value) {
 697         init_params[key] = value;
 698 }
 699
 700 function fatalError(code, msg, ext_info) {
 701         try {
 702
 703                 if (!ext_info) ext_info = "N/A";
 704
 705                 if (code == 6) {
 706                         window.location.href = "tt-rss.php";
 707                 } else if (code == 5) {
 708                         window.location.href = "db-updater.php";
 709                 } else {
 710
 711                         if (msg == "") msg = "Unknown error";
 712
 713                         var ebc = $("xebContent");
 714
 715                         if (ebc) {
 716
 717                                 Element.show("dialog_overlay");
 718                                 Element.show("errorBoxShadow");
 719                                 Element.hide("xebBtn");
 720
 721                                 if (ext_info) {
 722                                         if (ext_info.responseText) {
 723                                                 ext_info = ext_info.responseText;
 724                                         }
 725                                 }
 726
 727                                 ebc.innerHTML =
 728                                         "<div><b>Error message:</b></div>" +
 729                                         "<pre>" + msg + "</pre>" +
 730                                         "<div><b>Additional information:</b></div>" +
 731                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
 732                         }
 733                 }
 734
 735         } catch (e) {
 736                 exception_error("fatalError", e);
 737         }
 738 }
 739
 740 function filterDlgCheckType(sender) {
 741
 742         try {
 743
 744                 var ftype = sender.value;
 745
 746                 // if selected filter type is 5 (Date) enable the modifier dropbox
 747                 if (ftype == 5) {
 748                         Element.show("filterDlg_dateModBox");
 749                         Element.show("filterDlg_dateChkBox");
 750                 } else {
 751                         Element.hide("filterDlg_dateModBox");
 752                         Element.hide("filterDlg_dateChkBox");
 753
 754                 }
 755
 756         } catch (e) {
 757                 exception_error("filterDlgCheckType", e);
 758         }
 759
 760 }
 761
 762 function filterDlgCheckAction(sender) {
 763
 764         try {
 765
 766                 var action = sender.value;
 767
 768                 var action_param = $("filterDlg_paramBox");
 769
 770                 if (!action_param) {
 771                         console.log("filterDlgCheckAction: can't find action param box!");
 772                         return;
 773                 }
 774
 775                 // if selected action supports parameters, enable params field
 776                 if (action == 4 || action == 6 || action == 7) {
 777                         new Effect.Appear(action_param, {duration : 0.5});
 778                         if (action != 7) {
 779                                 Element.show(dijit.byId("filterDlg_actionParam").domNode);
 780                                 Element.hide(dijit.byId("filterDlg_actionParamLabel").domNode);
 781                         } else {
 782                                 Element.show(dijit.byId("filterDlg_actionParamLabel").domNode);
 783                                 Element.hide(dijit.byId("filterDlg_actionParam").domNode);
 784                         }
 785                 } else {
 786                         Element.hide(action_param);
 787                 }
 788
 789         } catch (e) {
 790                 exception_error("filterDlgCheckAction", e);
 791         }
 792
 793 }
 794
 795 function filterDlgCheckDate() {
 796         try {
 797                 var dialog = dijit.byId("filterEditDlg");
 798
 799                 var reg_exp = dialog.attr('value').reg_exp;
 800
 801                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
 802
 803                 new Ajax.Request("backend.php", {
 804                         parameters: query,
 805                         onComplete: function(transport) {
 806
 807                                 if (transport.responseXML) {
 808                                         var result = transport.responseXML.getElementsByTagName("result")[0];
 809
 810                                         if (result && result.firstChild) {
 811                                                 if (result.firstChild.nodeValue == "1") {
 812                                                         alert(__("Date syntax appears to be correct."));
 813                                                         return;
 814                                                 }
 815                                         }
 816                                 }
 817
 818                                 alert(__("Date syntax is incorrect."));
 819
 820                         } });
 821
 822
 823         } catch (e) {
 824                 exception_error("filterDlgCheckDate", e);
 825         }
 826 }
 827
 828 function explainError(code) {
 829         return displayDlg("explainError", code);
 830 }
 831
 832 function displayHelpInfobox(topic_id) {
 833
 834         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
 835
 836         var w = window.open(url, "ttrss_help",
 837                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
 838
 839 }
 840
 841 function loading_set_progress(p) {
 842         try {
 843                 loading_progress += p;
 844
 845                 if (dijit.byId("loading_bar"))
 846                         dijit.byId("loading_bar").update({progress: loading_progress});
 847
 848                 if (loading_progress >= 90)
 849                         remove_splash();
 850
 851         } catch (e) {
 852                 exception_error("loading_set_progress", e);
 853         }
 854 }
 855
 856 function remove_splash() {
 857
 858         if (Element.visible("overlay")) {
 859                 console.log("about to remove splash, OMG!");
 860                 Element.hide("overlay");
 861                 console.log("removed splash!");
 862         }
 863 }
 864
 865 function getSelectedFeedsFromBrowser() {
 866
 867         var list = $$("#browseFeedList li[id*=FBROW]");
 868
 869         var selected = new Array();
 870
 871         list.each(function(child) {
 872                 var id = child.id.replace("FBROW-", "");
 873                 var cb = $("FBCHK-" + id);
 874
 875                 if (cb.checked) {
 876                         selected.push(id);
 877                 }
 878         });
 879
 880         return selected;
 881 }
 882
 883 function updateFeedBrowser() {
 884         try {
 885
 886                 var query = Form.serialize("feed_browser");
 887
 888                 Element.show('feed_browser_spinner');
 889
 890                 new Ajax.Request("backend.php", {
 891                         parameters: query,
 892                         onComplete: function(transport) {
 893                                 notify('');
 894
 895                                 Element.hide('feed_browser_spinner');
 896
 897                                 var c = $("browseFeedList");
 898                                 var r = transport.responseXML.getElementsByTagName("content")[0];
 899                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
 900                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
 901
 902                                 if (c && r) {
 903                                         c.innerHTML = r.firstChild.nodeValue;
 904                                 }
 905
 906                                 if (parseInt(mode.getAttribute("value")) == 2) {
 907                                         Element.show('feed_archive_remove');
 908                                 } else {
 909                                         Element.hide('feed_archive_remove');
 910                                 }
 911
 912                         } });
 913
 914         } catch (e) {
 915                 exception_error("updateFeedBrowser", e);
 916         }
 917
 918 }
 919
 920 function transport_error_check(transport) {
 921         try {
 922                 if (transport.responseXML) {
 923                         var error = transport.responseXML.getElementsByTagName("error")[0];
 924
 925                         if (error) {
 926                                 var code = error.getAttribute("error-code");
 927                                 var msg = error.getAttribute("error-msg");
 928                                 if (code != 0) {
 929                                         fatalError(code, msg);
 930                                         return false;
 931                                 }
 932                         }
 933                 }
 934         } catch (e) {
 935                 exception_error("check_for_error_xml", e);
 936         }
 937         return true;
 938 }
 939
 940 function strip_tags(s) {
 941         return s.replace(/<\/?[^>]+(>|$)/g, "");
 942 }
 943
 944 function truncate_string(s, length) {
 945         if (!length) length = 30;
 946         var tmp = s.substring(0, length);
 947         if (s.length > length) tmp += "&hellip;";
 948         return tmp;
 949 }
 950
 951 function hotkey_prefix_timeout() {
 952         try {
 953
 954                 var date = new Date();
 955                 var ts = Math.round(date.getTime() / 1000);
 956
 957                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
 958                         console.log("hotkey_prefix seems to be stuck, aborting");
 959                         hotkey_prefix_pressed = false;
 960                         hotkey_prefix = false;
 961                         Element.hide('cmdline');
 962                 }
 963
 964                 setTimeout("hotkey_prefix_timeout()", 1000);
 965
 966         } catch  (e) {
 967                 exception_error("hotkey_prefix_timeout", e);
 968         }
 969 }
 970
 971 function hideAuxDlg() {
 972         try {
 973                 Element.hide('auxDlg');
 974         } catch (e) {
 975                 exception_error("hideAuxDlg", e);
 976         }
 977 }
 978
 979 function feedBrowserSubscribe() {
 980         try {
 981
 982                 var selected = getSelectedFeedsFromBrowser();
 983
 984                 var mode = document.forms['feed_browser'].mode;
 985
 986                 mode = mode[mode.selectedIndex].value;
 987
 988                 if (selected.length > 0) {
 989                         closeInfoBox();
 990
 991                         notify_progress("Loading, please wait...", true);
 992
 993                         var query = "?op=rpc&subop=massSubscribe&ids="+
 994                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
 995
 996                         new Ajax.Request("backend.php", {
 997                                 parameters: query,
 998                                 onComplete: function(transport) {
 999
1000                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1001                                         var nf_value = nf.getAttribute("value");
1002
1003                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1004
1005                                         if (inPreferences()) {
1006                                                 updateFeedList();
1007                                         } else {
1008                                                 setTimeout('updateFeedList(false, false)', 50);
1009                                         }
1010                                 } });
1011
1012                 } else {
1013                         alert(__("No feeds are selected."));
1014                 }
1015
1016         } catch (e) {
1017                 exception_error("feedBrowserSubscribe", e);
1018         }
1019 }
1020
1021 function feedArchiveRemove() {
1022         try {
1023
1024                 var selected = getSelectedFeedsFromBrowser();
1025
1026                 if (selected.length > 0) {
1027
1028                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1029
1030                         if (confirm(pr)) {
1031                                 Element.show('feed_browser_spinner');
1032
1033                                 var query = "?op=rpc&subop=remarchived&ids=" +
1034                                         param_escape(selected.toString());;
1035
1036                                 new Ajax.Request("backend.php", {
1037                                         parameters: query,
1038                                         onComplete: function(transport) {
1039                                                 updateFeedBrowser();
1040                                         } });
1041                         }
1042
1043                 } else {
1044                         alert(__("No feeds are selected."));
1045                 }
1046
1047         } catch (e) {
1048                 exception_error("feedArchiveRemove", e);
1049         }
1050 }
1051
1052 function uploadIconHandler(rc) {
1053         try {
1054                 switch (rc) {
1055                         case 0:
1056                                 notify_info("Upload complete.");
1057                                 if (inPreferences()) {
1058                                         updateFeedList();
1059                                 } else {
1060                                         setTimeout('updateFeedList(false, false)', 50);
1061                                 }
1062                                 break;
1063                         case 1:
1064                                 notify_error("Upload failed: icon is too big.");
1065                                 break;
1066                         case 2:
1067                                 notify_error("Upload failed.");
1068                                 break;
1069                 }
1070
1071         } catch (e) {
1072                 exception_error("uploadIconHandler", e);
1073         }
1074 }
1075
1076 function removeFeedIcon(id) {
1077
1078         try {
1079
1080                 if (confirm(__("Remove stored feed icon?"))) {
1081                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
1082
1083                         console.log(query);
1084
1085                         notify_progress("Removing feed icon...", true);
1086
1087                         new Ajax.Request("backend.php", {
1088                                 parameters: query,
1089                                 onComplete: function(transport) {
1090                                         notify_info("Feed icon removed.");
1091                                         if (inPreferences()) {
1092                                                 updateFeedList();
1093                                         } else {
1094                                                 setTimeout('updateFeedList(false, false)', 50);
1095                                         }
1096                                 } });
1097                 }
1098
1099                 return false;
1100         } catch (e) {
1101                 exception_error("uploadFeedIcon", e);
1102         }
1103 }
1104
1105 function uploadFeedIcon() {
1106
1107         try {
1108
1109                 var file = $("icon_file");
1110
1111                 if (file.value.length == 0) {
1112                         alert(__("Please select an image file to upload."));
1113                 } else {
1114                         if (confirm(__("Upload new icon for this feed?"))) {
1115                                 notify_progress("Uploading, please wait...", true);
1116                                 return true;
1117                         }
1118                 }
1119
1120                 return false;
1121
1122         } catch (e) {
1123                 exception_error("uploadFeedIcon", e);
1124         }
1125 }
1126
1127 function addLabel(select, callback) {
1128
1129         try {
1130
1131                 var caption = prompt(__("Please enter label caption:"), "");
1132
1133                 if (caption != undefined) {
1134
1135                         if (caption == "") {
1136                                 alert(__("Can't create label: missing caption."));
1137                                 return false;
1138                         }
1139
1140                         var query = "?op=pref-labels&subop=add&caption=" +
1141                                 param_escape(caption);
1142
1143                         if (select)
1144                                 query += "&output=select";
1145
1146                         notify_progress("Loading, please wait...", true);
1147
1148                         if (inPreferences() && !select) active_tab = "labelConfig";
1149
1150                         new Ajax.Request("backend.php", {
1151                                 parameters: query,
1152                                 onComplete: function(transport) {
1153                                         if (callback) {
1154                                                 callback(transport);
1155                                         } else if (inPreferences()) {
1156                                                 infobox_submit_callback2(transport);
1157                                         } else {
1158                                                 updateFeedList();
1159                                         }
1160                         } });
1161
1162                 }
1163
1164         } catch (e) {
1165                 exception_error("addLabel", e);
1166         }
1167 }
1168
1169 function quickAddFeed() {
1170         displayDlg('quickAddFeed', '',
1171            function () {$('feed_url').focus();});
1172 }
1173
1174 function quickAddFilter() {
1175         try {
1176                 var query = "backend.php?op=dlg&id=quickAddFilter";
1177
1178                 if (dijit.byId("filterEditDlg"))
1179                         dijit.byId("filterEditDlg").destroyRecursive();
1180
1181                 dialog = new dijit.Dialog({
1182                         id: "filterEditDlg",
1183                         title: __("Create Filter"),
1184                         style: "width: 600px",
1185                         execute: function() {
1186                                 if (this.validate()) {
1187
1188                                         var query = "?op=rpc&subop=verifyRegexp&reg_exp=" +
1189                                                 param_escape(dialog.attr('value').reg_exp);
1190
1191                                         notify_progress("Verifying regular expression...");
1192
1193                                         new Ajax.Request("backend.php", {
1194                                                 parameters: query,
1195                                                 onComplete: function(transport) {
1196                                                         handle_rpc_reply(transport);
1197                                                         var response = transport.responseXML;
1198
1199                                                         if (response) {
1200                                                                 var s = response.getElementsByTagName("status")[0].firstChild.nodeValue;
1201
1202                                                                 notify('');
1203
1204                                                                 if (s == "INVALID") {
1205                                                                         alert("Match regular expression seems to be invalid.");
1206                                                                         return;
1207                                                                 } else {
1208                                                                         notify_progress("Saving data...", true);
1209
1210                                                                         console.log(dojo.objectToQuery(dialog.attr('value')));
1211
1212                                                                         new Ajax.Request("backend.php", {
1213                                                                                 parameters: dojo.objectToQuery(dialog.attr('value')),
1214                                                                                 onComplete: function(transport) {
1215                                                                                         dialog.hide();
1216                                                                                         notify_info(transport.responseText);
1217                                                                                         if (inPreferences()) {
1218                                                                                                 updateFilterList();
1219                                                                                         }
1220                                                                         }})
1221                                                                 }
1222                                                         }
1223                                         }});
1224                                 }
1225                         },
1226                         href: query});
1227
1228                 dialog.show();
1229         } catch (e) {
1230                 exception_error("quickAddFilter", e);
1231         }
1232 }
1233
1234 function unsubscribeFeed(feed_id, title) {
1235
1236         var msg = __("Unsubscribe from %s?").replace("%s", title);
1237
1238         if (title == undefined || confirm(msg)) {
1239                 notify_progress("Removing feed...");
1240
1241                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
1242
1243                 new Ajax.Request("backend.php", {
1244                         parameters: query,
1245                         onComplete: function(transport) {
1246
1247                                         closeInfoBox();
1248
1249                                         if (inPreferences()) {
1250                                                 updateFeedList();
1251                                         } else {
1252                                                 dlg_frefresh_callback(transport, feed_id);
1253                                         }
1254
1255                                 } });
1256         }
1257
1258         return false;
1259 }
1260
1261
1262 function backend_sanity_check_callback(transport) {
1263
1264         try {
1265
1266                 if (sanity_check_done) {
1267                         fatalError(11, "Sanity check request received twice. This can indicate "+
1268                       "presence of Firebug or some other disrupting extension. "+
1269                                 "Please disable it and try again.");
1270                         return;
1271                 }
1272
1273                 if (!transport.responseXML) {
1274                         if (!store) {
1275                                 fatalError(3, "Sanity check: Received reply is not XML",
1276                                         transport.responseText);
1277                                 return;
1278                         }
1279                 }
1280
1281                 var reply = transport.responseXML.getElementsByTagName("error")[0];
1282
1283                 if (!reply) {
1284                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
1285                         return;
1286                 }
1287
1288                 var error_code = reply.getAttribute("error-code");
1289
1290                 if (error_code && error_code != 0) {
1291                         return fatalError(error_code, reply.getAttribute("error-msg"));
1292                 }
1293
1294                 console.log("sanity check ok");
1295
1296                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
1297
1298                 if (params) {
1299                         console.log('reading init-params...');
1300
1301                         params = JSON.parse(params.firstChild.nodeValue);
1302
1303                         if (params) {
1304                                 for (k in params) {
1305                                         var v = params[k];
1306                                         console.log("IP: " + k + " => " + v);
1307                                 }
1308                         }
1309
1310                         init_params = params;
1311                 }
1312
1313                 sanity_check_done = true;
1314
1315                 init_second_stage();
1316
1317         } catch (e) {
1318                 exception_error("backend_sanity_check_callback", e, transport);
1319         }
1320 }
1321
1322 function has_local_storage() {
1323         return false;
1324 /*      try {
1325                 return 'localStorage' in window && window['localStorage'] != null;
1326         } catch (e) {
1327                 return false;
1328         } */
1329 }
1330
1331 function catSelectOnChange(elem) {
1332         try {
1333 /*              var value = elem[elem.selectedIndex].value;
1334                 var def = elem.getAttribute('default');
1335
1336                 if (value == "ADD_CAT") {
1337
1338                         if (def)
1339                                 dropboxSelect(elem, def);
1340                         else
1341                                 elem.selectedIndex = 0;
1342
1343                         quickAddCat(elem);
1344                 } */
1345
1346         } catch (e) {
1347                 exception_error("catSelectOnChange", e);
1348         }
1349 }
1350
1351 function quickAddCat(elem) {
1352         try {
1353                 var cat = prompt(__("Please enter category title:"));
1354
1355                 if (cat) {
1356
1357                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
1358
1359                         notify_progress("Loading, please wait...", true);
1360
1361                         new Ajax.Request("backend.php", {
1362                                 parameters: query,
1363                                 onComplete: function (transport) {
1364                                         var response = transport.responseXML;
1365                                         var select = response.getElementsByTagName("select")[0];
1366                                         var options = select.getElementsByTagName("option");
1367
1368                                         dropbox_replace_options(elem, options);
1369
1370                                         notify('');
1371
1372                         } });
1373
1374                 }
1375
1376         } catch (e) {
1377                 exception_error("quickAddCat", e);
1378         }
1379 }
1380
1381 function genUrlChangeKey(feed, is_cat) {
1382
1383         try {
1384                 var ok = confirm(__("Generate new syndication address for this feed?"));
1385
1386                 if (ok) {
1387
1388                         notify_progress("Trying to change address...", true);
1389
1390                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
1391                                 "&is_cat=" + param_escape(is_cat);
1392
1393                         new Ajax.Request("backend.php", {
1394                                 parameters: query,
1395                                 onComplete: function(transport) {
1396                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
1397
1398                                                 var e = $('gen_feed_url');
1399
1400                                                 if (new_link) {
1401
1402                                                         new_link = new_link.firstChild.nodeValue;
1403
1404                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
1405                                                                 "&amp;key=" + new_link);
1406
1407                                                         e.href = e.href.replace(/\&amp;key=.*$/,
1408                                                                 "&amp;key=" + new_link);
1409
1410                                                         new Effect.Highlight(e);
1411
1412                                                         notify('');
1413
1414                                                 } else {
1415                                                         notify_error("Could not change feed URL.");
1416                                                 }
1417                                 } });
1418                 }
1419         } catch (e) {
1420                 exception_error("genUrlChangeKey", e);
1421         }
1422         return false;
1423 }
1424
1425 function labelSelectOnChange(elem) {
1426         try {
1427 /*              var value = elem[elem.selectedIndex].value;
1428                 var def = elem.getAttribute('default');
1429
1430                 if (value == "ADD_LABEL") {
1431
1432                         if (def)
1433                                 dropboxSelect(elem, def);
1434                         else
1435                                 elem.selectedIndex = 0;
1436
1437                         addLabel(elem, function(transport) {
1438
1439                                         try {
1440
1441                                                 var response = transport.responseXML;
1442                                                 var select = response.getElementsByTagName("select")[0];
1443                                                 var options = select.getElementsByTagName("option");
1444
1445                                                 dropbox_replace_options(elem, options);
1446
1447                                                 notify('');
1448                                         } catch (e) {
1449                                                 exception_error("addLabel", e);
1450                                         }
1451                         });
1452                 } */
1453
1454         } catch (e) {
1455                 exception_error("labelSelectOnChange", e);
1456         }
1457 }
1458
1459 function dropbox_replace_options(elem, options) {
1460
1461         try {
1462                 while (elem.hasChildNodes())
1463                         elem.removeChild(elem.firstChild);
1464
1465                 var sel_idx = -1;
1466
1467                 for (var i = 0; i < options.length; i++) {
1468                         var text = options[i].firstChild.nodeValue;
1469                         var value = options[i].getAttribute("value");
1470
1471                         if (value == undefined) value = text;
1472
1473                         var issel = options[i].getAttribute("selected") == "1";
1474
1475                         var option = new Option(text, value, issel);
1476
1477                         if (options[i].getAttribute("disabled"))
1478                                 option.setAttribute("disabled", true);
1479
1480                         elem.insert(option);
1481
1482                         if (issel) sel_idx = i;
1483                 }
1484
1485                 // Chrome doesn't seem to just select stuff when you pass new Option(x, y, true)
1486                 if (sel_idx >= 0) elem.selectedIndex = sel_idx;
1487
1488         } catch (e) {
1489                 exception_error("dropbox_replace_options", e);
1490         }
1491 }
1492
1493 // mode = all, none, invert
1494 function selectTableRows(id, mode) {
1495         try {
1496                 var rows = $(id).rows;
1497
1498                 for (var i = 0; i < rows.length; i++) {
1499                         var row = rows[i];
1500                         var cb = false;
1501
1502                         if (row.id && row.className) {
1503                                 var bare_id = row.id.replace(/^[A-Z]*?-/, "");
1504                                 var inputs = rows[i].getElementsByTagName("input");
1505
1506                                 for (var j = 0; j < inputs.length; j++) {
1507                                         var input = inputs[j];
1508
1509                                         if (input.getAttribute("type") == "checkbox" &&
1510                                                         input.id.match(bare_id)) {
1511
1512                                                 cb = input;
1513                                                 break;
1514                                         }
1515                                 }
1516
1517                                 if (cb) {
1518                                         var issel = row.hasClassName("Selected");
1519
1520                                         if (mode == "all" && !issel) {
1521                                                 row.addClassName("Selected");
1522                                                 cb.checked = true;
1523                                         } else if (mode == "none" && issel) {
1524                                                 row.removeClassName("Selected");
1525                                                 cb.checked = false;
1526                                         } else if (mode == "invert") {
1527
1528                                                 if (issel) {
1529                                                         row.removeClassName("Selected");
1530                                                         cb.checked = false;
1531                                                 } else {
1532                                                         row.addClassName("Selected");
1533                                                         cb.checked = true;
1534                                                 }
1535                                         }
1536                                 }
1537                         }
1538                 }
1539
1540         } catch (e) {
1541                 exception_error("selectTableRows", e);
1542
1543         }
1544 }
1545
1546 function getSelectedTableRowIds(id) {
1547         var rows = [];
1548
1549         try {
1550                 var elem_rows = $(id).rows;
1551
1552                 for (i = 0; i < elem_rows.length; i++) {
1553                         if (elem_rows[i].hasClassName("Selected")) {
1554                                 var bare_id = elem_rows[i].id.replace(/^[A-Z]*?-/, "");
1555                                 rows.push(bare_id);
1556                         }
1557                 }
1558
1559         } catch (e) {
1560                 exception_error("getSelectedTableRowIds", e);
1561         }
1562
1563         return rows;
1564 }
1565
1566 function editFeed(feed, event) {
1567
1568         try {
1569                 var query = "backend.php?op=pref-feeds&subop=editfeed&id=" +
1570                         param_escape(feed);
1571
1572                 console.log(query);
1573
1574                 if (dijit.byId("feedEditDlg"))
1575                         dijit.byId("feedEditDlg").destroyRecursive();
1576
1577                 dialog = new dijit.Dialog({
1578                         id: "feedEditDlg",
1579                         title: __("Edit Feed"),
1580                         style: "width: 600px",
1581                         execute: function() {
1582                                 if (this.validate()) {
1583                                         console.log(dojo.objectToQuery(this.attr('value')));
1584
1585                                         notify_progress("Saving data...", true);
1586
1587                                         new Ajax.Request("backend.php", {
1588                                                 parameters: dojo.objectToQuery(dialog.attr('value')),
1589                                                 onComplete: function(transport) {
1590                                                         dialog.hide();
1591                                                         if (inPreferences()) {
1592                                                                 updateFeedList();
1593                                                         } else {
1594                                                                 notify('');
1595                                                                 dlg_frefresh_callback(transport);
1596                                                         }
1597                                         }})
1598                                 }
1599                         },
1600                         href: query});
1601
1602                 dialog.show();
1603
1604         } catch (e) {
1605                 exception_error("editFeed", e);
1606         }
1607 }
1608
1609