functions.js

   1 var hotkeys_enabled = true;
   2 var notify_silent = false;
   3 var last_progress_point = 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 function tSR(sender, row) {
 310         return toggleSelectRow(sender, row);
 311 }
 312
 313 function toggleSelectRow(sender, row) {
 314
 315         if (!row) row = sender.parentNode.parentNode;
 316
 317         if (sender.checked && !row.hasClassName('Selected'))
 318                 row.addClassName('Selected');
 319         else
 320                 row.removeClassName('Selected');
 321 }
 322
 323 function checkboxToggleElement(elem, id) {
 324         if (elem.checked) {
 325                 Effect.Appear(id, {duration : 0.5});
 326         } else {
 327                 Effect.Fade(id, {duration : 0.5});
 328         }
 329 }
 330
 331 function dropboxSelect(e, v) {
 332         for (i = 0; i < e.length; i++) {
 333                 if (e[i].value == v) {
 334                         e.selectedIndex = i;
 335                         break;
 336                 }
 337         }
 338 }
 339
 340 // originally stolen from http://www.11tmr.com/11tmr.nsf/d6plinks/MWHE-695L9Z
 341 // bugfixed just a little bit :-)
 342 function getURLParam(strParamName){
 343   var strReturn = "";
 344   var strHref = window.location.href;
 345
 346   if (strHref.indexOf("#") == strHref.length-1) {
 347                 strHref = strHref.substring(0, strHref.length-1);
 348   }
 349
 350   if ( strHref.indexOf("?") > -1 ){
 351     var strQueryString = strHref.substr(strHref.indexOf("?"));
 352     var aQueryString = strQueryString.split("&");
 353     for ( var iParam = 0; iParam < aQueryString.length; iParam++ ){
 354       if (aQueryString[iParam].indexOf(strParamName + "=") > -1 ){
 355         var aParam = aQueryString[iParam].split("=");
 356         strReturn = aParam[1];
 357         break;
 358       }
 359     }
 360   }
 361   return strReturn;
 362 }
 363
 364 function leading_zero(p) {
 365         var s = String(p);
 366         if (s.length == 1) s = "0" + s;
 367         return s;
 368 }
 369
 370 function make_timestamp() {
 371         var d = new Date();
 372
 373         return leading_zero(d.getHours()) + ":" + leading_zero(d.getMinutes()) +
 374                         ":" + leading_zero(d.getSeconds());
 375 }
 376
 377
 378 function closeErrorBox() {
 379
 380         if (Element.visible("errorBoxShadow")) {
 381                 Element.hide("dialog_overlay");
 382                 Element.hide("errorBoxShadow");
 383
 384                 enableHotkeys();
 385         }
 386
 387         return false;
 388 }
 389
 390 function closeInfoBox(cleanup) {
 391         try {
 392                 enableHotkeys();
 393
 394                 dialog = dijit.byId("infoBox");
 395
 396                 if (dialog)     dialog.hide();
 397
 398         } catch (e) {
 399                 //exception_error("closeInfoBox", e);
 400         }
 401         return false;
 402 }
 403
 404
 405 function displayDlg(id, param, callback) {
 406
 407         notify_progress("Loading, please wait...", true);
 408
 409         var query = "?op=dlg&id=" +
 410                 param_escape(id) + "&param=" + param_escape(param);
 411
 412         new Ajax.Request("backend.php", {
 413                 parameters: query,
 414                 onComplete: function (transport) {
 415                         infobox_callback2(transport);
 416                         if (callback) callback(transport);
 417                 } });
 418
 419         return false;
 420 }
 421
 422 function infobox_submit_callback2(transport) {
 423         closeInfoBox();
 424
 425         try {
 426                 // called from prefs, reload tab
 427                 if (typeof active_tab != 'undefined' && active_tab) {
 428                         selectTab(active_tab, false);
 429                 }
 430         } catch (e) { }
 431
 432         if (transport.responseText) {
 433                 notify_info(transport.responseText);
 434         }
 435 }
 436
 437 function infobox_callback2(transport) {
 438         try {
 439                 var dialog = false;
 440
 441                 if (dijit.byId("infoBox")) {
 442                         dialog = dijit.byId("infoBox");
 443                 }
 444
 445                 //console.log("infobox_callback2");
 446                 notify('');
 447
 448                 var content;
 449                 var dtitle = "Dialog";
 450
 451                 if (transport.responseXML) {
 452                         var dlg = transport.responseXML.getElementsByTagName("dlg")[0];
 453
 454                         var title = transport.responseXML.getElementsByTagName("title")[0];
 455                         if (title)
 456                                 title = title.firstChild.nodeValue;
 457
 458                         var content = transport.responseXML.getElementsByTagName("content")[0];
 459
 460                         content = content.firstChild.nodeValue;
 461
 462                 } else {
 463                         content = transport.responseText;
 464                 }
 465
 466                 if (!dialog) {
 467                         dialog = new dijit.Dialog({
 468                                 title: title,
 469                                 id: 'infoBox',
 470                                 style: "width: 600px",
 471                                 onCancel: function() {
 472                                         return true;
 473                                 },
 474                                 onExecute: function() {
 475                                         return true;
 476                                 },
 477                                 onClose: function() {
 478                                         return true;
 479                                         },
 480                                 content: content});
 481                 } else {
 482                         dialog.attr('title', title);
 483                         dialog.attr('content', content);
 484                 }
 485
 486                 dialog.show();
 487
 488                 notify("");
 489         } catch (e) {
 490                 exception_error("infobox_callback2", e);
 491         }
 492 }
 493
 494 function createFilter() {
 495
 496         try {
 497
 498                 var form = document.forms['filter_add_form'];
 499                 var reg_exp = form.reg_exp.value;
 500
 501                 if (reg_exp == "") {
 502                         alert(__("Can't add filter: nothing to match on."));
 503                         return false;
 504                 }
 505
 506                 var query = "?op=rpc&subop=verifyRegexp&reg_exp=" + param_escape(reg_exp);
 507
 508                 notify_progress("Verifying regular expression...");
 509
 510                 new Ajax.Request("backend.php", {
 511                                 parameters: query,
 512                                 onComplete: function(transport) {
 513                                         handle_rpc_reply(transport);
 514
 515                                         var response = transport.responseXML;
 516
 517                                         if (response) {
 518                                                 var s = response.getElementsByTagName("status")[0].firstChild.nodeValue;
 519
 520                                                 notify('');
 521
 522                                                 if (s == "INVALID") {
 523                                                         alert("Match regular expression seems to be invalid.");
 524                                                         return;
 525                                                 } else {
 526
 527                                                         var query = Form.serialize("filter_add_form");
 528
 529                                                         // we can be called from some other tab in Prefs
 530                                                         if (typeof active_tab != 'undefined' && active_tab) {
 531                                                                 active_tab = "filterConfig";
 532                                                         }
 533
 534                                                         new Ajax.Request("backend.php?" + query, {
 535                                                                 onComplete: function (transport) {
 536                                                                         infobox_submit_callback2(transport);
 537                                                                 } });
 538
 539                                                         return true;
 540                                                 }
 541                                         }
 542
 543                         } });
 544
 545         } catch (e) {
 546                 exception_error("createFilter", e);
 547         }
 548 }
 549
 550 function isValidURL(s) {
 551         return s.match("http://") != null || s.match("https://") != null || s.match("feed://") != null;
 552 }
 553
 554 function subscribeToFeed() {
 555
 556         try {
 557
 558         var form = document.forms['feed_add_form'];
 559         var feed_url = form.feed_url.value;
 560
 561         if (feed_url == "") {
 562                 alert(__("Can't subscribe: no feed URL given."));
 563                 return false;
 564         }
 565
 566         notify_progress(__("Subscribing to feed..."), true);
 567
 568         var query = Form.serialize("feed_add_form");
 569
 570         console.log("subscribe q: " + query);
 571
 572         Form.disable("feed_add_form");
 573
 574         new Ajax.Request("backend.php", {
 575                 parameters: query,
 576                 onComplete: function(transport) {
 577                         try {
 578
 579                                 if (!transport.responseXML) {
 580                                         console.log(transport.responseText);
 581                                         alert(__("Server error while trying to subscribe to specified feed."));
 582                                         return;
 583                                 }
 584
 585                                 var result = transport.responseXML.getElementsByTagName('result')[0];
 586                                 var rc = parseInt(result.getAttribute('code'));
 587
 588                                 Form.enable("feed_add_form");
 589
 590                                 notify('');
 591
 592                                 switch (rc) {
 593                                 case 1:
 594                                         closeInfoBox();
 595                                         notify_info(__("Subscribed to %s").replace("%s", feed_url));
 596
 597                                         if (inPreferences()) {
 598                                                 updateFeedList();
 599                                         } else {
 600                                                 setTimeout('updateFeedList(false, false)', 50);
 601                                         }
 602                                         break;
 603                                 case 2:
 604                                         alert(__("Specified URL seems to be invalid."));
 605                                         break;
 606                                 case 3:
 607                                         alert(__("Specified URL doesn't seem to contain any feeds."));
 608                                         break;
 609                                 case 4:
 610                                         new Ajax.Request("backend.php", {
 611                                                 parameters: 'op=rpc&subop=extractfeedurls&url=' + encodeURIComponent(feed_url),
 612                                                 onComplete: function(transport) {
 613                                                         var result = transport.responseXML.getElementsByTagName('urls')[0];
 614                                                         var feeds = JSON.parse(result.firstChild.nodeValue);
 615                                                         var select = document.getElementById("faad_feeds_container_select");
 616
 617                                                         while (select.hasChildNodes()) {
 618                                                                 select.removeChild(elem.firstChild);
 619                                                         }
 620                                                         var count = 0;
 621                                                         for (var feedUrl in feeds) {
 622                                                                 select.insert(new Option(feeds[feedUrl], feedUrl, false));
 623                                                                 count++;
 624                                                         }
 625                                                         if (count > 5) count = 5;
 626                                                         select.size = count;
 627
 628                                                         Effect.Appear('fadd_feeds_container', {duration : 0.5});
 629                                                 }
 630                                         });
 631                                         break;
 632                                 case 5:
 633                                         alert(__("Couldn't download the specified URL."));
 634                                         break;
 635                                 case 0:
 636                                         alert(__("You are already subscribed to this feed."));
 637                                         break;
 638                                 }
 639
 640                         } catch (e) {
 641                                 exception_error("subscribeToFeed", e);
 642                         }
 643
 644                 } });
 645
 646         } catch (e) {
 647                 exception_error("subscribeToFeed", e);
 648         }
 649
 650         return false;
 651 }
 652
 653 function filterCR(e, f)
 654 {
 655      var key;
 656
 657      if(window.event)
 658           key = window.event.keyCode;     //IE
 659      else
 660           key = e.which;     //firefox
 661
 662         if (key == 13) {
 663                 if (typeof f != 'undefined') {
 664                         f();
 665                         return false;
 666                 } else {
 667                         return false;
 668                 }
 669         } else {
 670                 return true;
 671         }
 672 }
 673
 674 function getInitParam(key) {
 675         return init_params[key];
 676 }
 677
 678 function setInitParam(key, value) {
 679         init_params[key] = value;
 680 }
 681
 682 function fatalError(code, msg, ext_info) {
 683         try {
 684
 685                 if (!ext_info) ext_info = "N/A";
 686
 687                 if (code == 6) {
 688                         window.location.href = "tt-rss.php";
 689                 } else if (code == 5) {
 690                         window.location.href = "db-updater.php";
 691                 } else {
 692
 693                         if (msg == "") msg = "Unknown error";
 694
 695                         var ebc = $("xebContent");
 696
 697                         if (ebc) {
 698
 699                                 Element.show("dialog_overlay");
 700                                 Element.show("errorBoxShadow");
 701                                 Element.hide("xebBtn");
 702
 703                                 if (ext_info) {
 704                                         if (ext_info.responseText) {
 705                                                 ext_info = ext_info.responseText;
 706                                         }
 707                                 }
 708
 709                                 ebc.innerHTML =
 710                                         "<div><b>Error message:</b></div>" +
 711                                         "<pre>" + msg + "</pre>" +
 712                                         "<div><b>Additional information:</b></div>" +
 713                                         "<textarea readonly=\"1\">" + ext_info + "</textarea>";
 714                         }
 715                 }
 716
 717         } catch (e) {
 718                 exception_error("fatalError", e);
 719         }
 720 }
 721
 722 function filterDlgCheckType(sender) {
 723
 724         try {
 725
 726                 var ftype = sender[sender.selectedIndex].value;
 727
 728                 var form = document.forms["filter_add_form"];
 729
 730                 if (!form) {
 731                         form = document.forms["filter_edit_form"];
 732                 }
 733
 734                 if (!form) {
 735                         console.log("filterDlgCheckType: can't find form!");
 736                         return;
 737                 }
 738
 739                 // if selected filter type is 5 (Date) enable the modifier dropbox
 740                 if (ftype == 5) {
 741                         Element.show("filter_dlg_date_mod_box");
 742                         Element.show("filter_dlg_date_chk_box");
 743                 } else {
 744                         Element.hide("filter_dlg_date_mod_box");
 745                         Element.hide("filter_dlg_date_chk_box");
 746
 747                 }
 748
 749         } catch (e) {
 750                 exception_error("filterDlgCheckType", e);
 751         }
 752
 753 }
 754
 755 function filterDlgCheckAction(sender) {
 756
 757         try {
 758
 759                 var action = sender[sender.selectedIndex].value;
 760
 761                 var form = document.forms["filter_add_form"];
 762
 763                 if (!form) {
 764                         form = document.forms["filter_edit_form"];
 765                 }
 766
 767                 if (!form) {
 768                         console.log("filterDlgCheckAction: can't find form!");
 769                         return;
 770                 }
 771
 772                 var action_param = $("filter_dlg_param_box");
 773
 774                 if (!action_param) {
 775                         console.log("filterDlgCheckAction: can't find action param box!");
 776                         return;
 777                 }
 778
 779                 // if selected action supports parameters, enable params field
 780                 if (action == 4 || action == 6 || action == 7) {
 781                         Element.show(action_param);
 782                         if (action != 7) {
 783                                 Element.show(form.action_param);
 784                                 Element.hide(form.action_param_label);
 785                         } else {
 786                                 Element.show(form.action_param_label);
 787                                 Element.hide(form.action_param);
 788                         }
 789                 } else {
 790                         Element.hide(action_param);
 791                 }
 792
 793         } catch (e) {
 794                 exception_error("filterDlgCheckAction", e);
 795         }
 796
 797 }
 798
 799 function filterDlgCheckDate() {
 800         try {
 801                 var form = document.forms["filter_add_form"];
 802
 803                 if (!form) {
 804                         form = document.forms["filter_edit_form"];
 805                 }
 806
 807                 if (!form) {
 808                         console.log("filterDlgCheckAction: can't find form!");
 809                         return;
 810                 }
 811
 812                 var reg_exp = form.reg_exp.value;
 813
 814                 var query = "?op=rpc&subop=checkDate&date=" + reg_exp;
 815
 816                 new Ajax.Request("backend.php", {
 817                         parameters: query,
 818                         onComplete: function(transport) {
 819
 820                                 var form = document.forms["filter_add_form"];
 821
 822                                 if (!form) {
 823                                         form = document.forms["filter_edit_form"];
 824                                 }
 825
 826                                 if (transport.responseXML) {
 827                                         var result = transport.responseXML.getElementsByTagName("result")[0];
 828
 829                                         if (result && result.firstChild) {
 830                                                 if (result.firstChild.nodeValue == "1") {
 831
 832                                                         new Effect.Highlight(form.reg_exp, {startcolor : '#00ff00'});
 833
 834                                                         return;
 835                                                 }
 836                                         }
 837                                 }
 838
 839                                 new Effect.Highlight(form.reg_exp, {startcolor : '#ff0000'});
 840
 841                         } });
 842
 843
 844         } catch (e) {
 845                 exception_error("filterDlgCheckDate", e);
 846         }
 847 }
 848
 849 function explainError(code) {
 850         return displayDlg("explainError", code);
 851 }
 852
 853 function displayHelpInfobox(topic_id) {
 854
 855         var url = "backend.php?op=help&tid=" + param_escape(topic_id);
 856
 857         var w = window.open(url, "ttrss_help",
 858                 "status=0,toolbar=0,location=0,width=450,height=500,scrollbars=1,menubar=0");
 859
 860 }
 861
 862 function loading_set_progress(p) {
 863         try {
 864                 if (p < last_progress_point || !Element.visible("overlay")) return;
 865
 866                 console.log("loading_set_progress : " + p + " (" + last_progress_point + ")");
 867
 868                 var o = $("l_progress_i");
 869
 870 //              o.style.width = (p * 2) + "px";
 871
 872                 new Effect.Scale(o, p, {
 873                         scaleY : false,
 874                         scaleFrom : last_progress_point,
 875                         scaleMode: { originalWidth : 200 },
 876                         queue: { position: 'end', scope: 'LSP-Q', limit: 3 } });
 877
 878                 last_progress_point = p;
 879
 880         } catch (e) {
 881                 exception_error("loading_set_progress", e);
 882         }
 883 }
 884
 885 function remove_splash() {
 886         if (Element.visible("overlay")) {
 887                 console.log("about to remove splash, OMG!");
 888                 Element.hide("overlay");
 889                 console.log("removed splash!");
 890         }
 891 }
 892
 893 function getSelectedFeedsFromBrowser() {
 894
 895         var list = $$("#browseFeedList li[id*=FBROW]");
 896
 897         var selected = new Array();
 898
 899         list.each(function(child) {
 900                 var id = child.id.replace("FBROW-", "");
 901                 var cb = $("FBCHK-" + id);
 902
 903                 if (cb.checked) {
 904                         selected.push(id);
 905                 }
 906         });
 907
 908         return selected;
 909 }
 910
 911 function updateFeedBrowser() {
 912         try {
 913
 914                 var query = Form.serialize("feed_browser");
 915
 916                 Element.show('feed_browser_spinner');
 917
 918                 new Ajax.Request("backend.php", {
 919                         parameters: query,
 920                         onComplete: function(transport) {
 921                                 notify('');
 922
 923                                 Element.hide('feed_browser_spinner');
 924
 925                                 var c = $("browseFeedList");
 926                                 var r = transport.responseXML.getElementsByTagName("content")[0];
 927                                 var nr = transport.responseXML.getElementsByTagName("num-results")[0];
 928                                 var mode = transport.responseXML.getElementsByTagName("mode")[0];
 929
 930                                 if (c && r) {
 931                                         c.innerHTML = r.firstChild.nodeValue;
 932                                 }
 933
 934                                 if (parseInt(mode.getAttribute("value")) == 2) {
 935                                         Element.show('feed_archive_remove');
 936                                 } else {
 937                                         Element.hide('feed_archive_remove');
 938                                 }
 939
 940                         } });
 941
 942         } catch (e) {
 943                 exception_error("updateFeedBrowser", e);
 944         }
 945
 946 }
 947
 948 function transport_error_check(transport) {
 949         try {
 950                 if (transport.responseXML) {
 951                         var error = transport.responseXML.getElementsByTagName("error")[0];
 952
 953                         if (error) {
 954                                 var code = error.getAttribute("error-code");
 955                                 var msg = error.getAttribute("error-msg");
 956                                 if (code != 0) {
 957                                         fatalError(code, msg);
 958                                         return false;
 959                                 }
 960                         }
 961                 }
 962         } catch (e) {
 963                 exception_error("check_for_error_xml", e);
 964         }
 965         return true;
 966 }
 967
 968 function strip_tags(s) {
 969         return s.replace(/<\/?[^>]+(>|$)/g, "");
 970 }
 971
 972 function truncate_string(s, length) {
 973         if (!length) length = 30;
 974         var tmp = s.substring(0, length);
 975         if (s.length > length) tmp += "&hellip;";
 976         return tmp;
 977 }
 978
 979 function hotkey_prefix_timeout() {
 980         try {
 981
 982                 var date = new Date();
 983                 var ts = Math.round(date.getTime() / 1000);
 984
 985                 if (hotkey_prefix_pressed && ts - hotkey_prefix_pressed >= 5) {
 986                         console.log("hotkey_prefix seems to be stuck, aborting");
 987                         hotkey_prefix_pressed = false;
 988                         hotkey_prefix = false;
 989                         Element.hide('cmdline');
 990                 }
 991
 992                 setTimeout("hotkey_prefix_timeout()", 1000);
 993
 994         } catch  (e) {
 995                 exception_error("hotkey_prefix_timeout", e);
 996         }
 997 }
 998
 999 function hideAuxDlg() {
1000         try {
1001                 Element.hide('auxDlg');
1002         } catch (e) {
1003                 exception_error("hideAuxDlg", e);
1004         }
1005 }
1006
1007 function feedBrowserSubscribe() {
1008         try {
1009
1010                 var selected = getSelectedFeedsFromBrowser();
1011
1012                 var mode = document.forms['feed_browser'].mode;
1013
1014                 mode = mode[mode.selectedIndex].value;
1015
1016                 if (selected.length > 0) {
1017                         closeInfoBox();
1018
1019                         notify_progress("Loading, please wait...", true);
1020
1021                         var query = "?op=rpc&subop=massSubscribe&ids="+
1022                                 param_escape(selected.toString()) + "&mode=" + param_escape(mode);
1023
1024                         new Ajax.Request("backend.php", {
1025                                 parameters: query,
1026                                 onComplete: function(transport) {
1027
1028                                         var nf = transport.responseXML.getElementsByTagName('num-feeds')[0];
1029                                         var nf_value = nf.getAttribute("value");
1030
1031                                         notify_info(__("Subscribed to %d feed(s).").replace("%d", nf_value));
1032
1033                                         if (inPreferences()) {
1034                                                 updateFeedList();
1035                                         } else {
1036                                                 setTimeout('updateFeedList(false, false)', 50);
1037                                         }
1038                                 } });
1039
1040                 } else {
1041                         alert(__("No feeds are selected."));
1042                 }
1043
1044         } catch (e) {
1045                 exception_error("feedBrowserSubscribe", e);
1046         }
1047 }
1048
1049 function feedArchiveRemove() {
1050         try {
1051
1052                 var selected = getSelectedFeedsFromBrowser();
1053
1054                 if (selected.length > 0) {
1055
1056                         var pr = __("Remove selected feeds from the archive? Feeds with stored articles will not be removed.");
1057
1058                         if (confirm(pr)) {
1059                                 Element.show('feed_browser_spinner');
1060
1061                                 var query = "?op=rpc&subop=remarchived&ids=" +
1062                                         param_escape(selected.toString());;
1063
1064                                 new Ajax.Request("backend.php", {
1065                                         parameters: query,
1066                                         onComplete: function(transport) {
1067                                                 updateFeedBrowser();
1068                                         } });
1069                         }
1070
1071                 } else {
1072                         alert(__("No feeds are selected."));
1073                 }
1074
1075         } catch (e) {
1076                 exception_error("feedArchiveRemove", e);
1077         }
1078 }
1079
1080 function uploadIconHandler(rc) {
1081         try {
1082                 switch (rc) {
1083                         case 0:
1084                                 notify_info("Upload complete.");
1085                                 if (inPreferences()) {
1086                                         updateFeedList();
1087                                 } else {
1088                                         setTimeout('updateFeedList(false, false)', 50);
1089                                 }
1090                                 break;
1091                         case 1:
1092                                 notify_error("Upload failed: icon is too big.");
1093                                 break;
1094                         case 2:
1095                                 notify_error("Upload failed.");
1096                                 break;
1097                 }
1098
1099         } catch (e) {
1100                 exception_error("uploadIconHandler", e);
1101         }
1102 }
1103
1104 function removeFeedIcon(id) {
1105
1106         try {
1107
1108                 if (confirm(__("Remove stored feed icon?"))) {
1109                         var query = "backend.php?op=pref-feeds&subop=removeicon&feed_id=" + param_escape(id);
1110
1111                         console.log(query);
1112
1113                         notify_progress("Removing feed icon...", true);
1114
1115                         new Ajax.Request("backend.php", {
1116                                 parameters: query,
1117                                 onComplete: function(transport) {
1118                                         notify_info("Feed icon removed.");
1119                                         if (inPreferences()) {
1120                                                 updateFeedList();
1121                                         } else {
1122                                                 setTimeout('updateFeedList(false, false)', 50);
1123                                         }
1124                                 } });
1125                 }
1126
1127                 return false;
1128         } catch (e) {
1129                 exception_error("uploadFeedIcon", e);
1130         }
1131 }
1132
1133 function uploadFeedIcon() {
1134
1135         try {
1136
1137                 var file = $("icon_file");
1138
1139                 if (file.value.length == 0) {
1140                         alert(__("Please select an image file to upload."));
1141                 } else {
1142                         if (confirm(__("Upload new icon for this feed?"))) {
1143                                 notify_progress("Uploading, please wait...", true);
1144                                 return true;
1145                         }
1146                 }
1147
1148                 return false;
1149
1150         } catch (e) {
1151                 exception_error("uploadFeedIcon", e);
1152         }
1153 }
1154
1155 function addLabel(select, callback) {
1156
1157         try {
1158
1159                 var caption = prompt(__("Please enter label caption:"), "");
1160
1161                 if (caption != undefined) {
1162
1163                         if (caption == "") {
1164                                 alert(__("Can't create label: missing caption."));
1165                                 return false;
1166                         }
1167
1168                         var query = "?op=pref-labels&subop=add&caption=" +
1169                                 param_escape(caption);
1170
1171                         if (select)
1172                                 query += "&output=select";
1173
1174                         notify_progress("Loading, please wait...", true);
1175
1176                         if (inPreferences() && !select) active_tab = "labelConfig";
1177
1178                         new Ajax.Request("backend.php", {
1179                                 parameters: query,
1180                                 onComplete: function(transport) {
1181                                         if (callback) {
1182                                                 callback(transport);
1183                                         } else if (inPreferences()) {
1184                                                 infobox_submit_callback2(transport);
1185                                         } else {
1186                                                 updateFeedList();
1187                                         }
1188                         } });
1189
1190                 }
1191
1192         } catch (e) {
1193                 exception_error("addLabel", e);
1194         }
1195 }
1196
1197 function quickAddFeed() {
1198         displayDlg('quickAddFeed', '',
1199            function () {$('feed_url').focus();});
1200 }
1201
1202 function quickAddFilter() {
1203         displayDlg('quickAddFilter', '',
1204            function () {document.forms['filter_add_form'].reg_exp.focus();});
1205 }
1206
1207 function unsubscribeFeed(feed_id, title) {
1208
1209         var msg = __("Unsubscribe from %s?").replace("%s", title);
1210
1211         if (title == undefined || confirm(msg)) {
1212                 notify_progress("Removing feed...");
1213
1214                 var query = "?op=pref-feeds&quiet=1&subop=remove&ids=" + feed_id;
1215
1216                 new Ajax.Request("backend.php", {
1217                         parameters: query,
1218                         onComplete: function(transport) {
1219
1220                                         closeInfoBox();
1221
1222                                         if (inPreferences()) {
1223                                                 updateFeedList();
1224                                         } else {
1225                                                 dlg_frefresh_callback(transport, feed_id);
1226                                         }
1227
1228                                 } });
1229         }
1230
1231         return false;
1232 }
1233
1234
1235 function backend_sanity_check_callback(transport) {
1236
1237         try {
1238
1239                 if (sanity_check_done) {
1240                         fatalError(11, "Sanity check request received twice. This can indicate "+
1241                       "presence of Firebug or some other disrupting extension. "+
1242                                 "Please disable it and try again.");
1243                         return;
1244                 }
1245
1246                 if (!transport.responseXML) {
1247                         if (!store) {
1248                                 fatalError(3, "Sanity check: Received reply is not XML",
1249                                         transport.responseText);
1250                                 return;
1251                         }
1252                 }
1253
1254                 var reply = transport.responseXML.getElementsByTagName("error")[0];
1255
1256                 if (!reply) {
1257                         fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
1258                         return;
1259                 }
1260
1261                 var error_code = reply.getAttribute("error-code");
1262
1263                 if (error_code && error_code != 0) {
1264                         return fatalError(error_code, reply.getAttribute("error-msg"));
1265                 }
1266
1267                 console.log("sanity check ok");
1268
1269                 var params = transport.responseXML.getElementsByTagName("init-params")[0];
1270
1271                 if (params) {
1272                         console.log('reading init-params...');
1273
1274                         params = JSON.parse(params.firstChild.nodeValue);
1275
1276                         if (params) {
1277                                 for (k in params) {
1278                                         var v = params[k];
1279                                         console.log("IP: " + k + " => " + v);
1280                                 }
1281                         }
1282
1283                         init_params = params;
1284                 }
1285
1286                 sanity_check_done = true;
1287
1288                 init_second_stage();
1289
1290         } catch (e) {
1291                 exception_error("backend_sanity_check_callback", e, transport);
1292         }
1293 }
1294
1295 function has_local_storage() {
1296         return false;
1297 /*      try {
1298                 return 'localStorage' in window && window['localStorage'] != null;
1299         } catch (e) {
1300                 return false;
1301         } */
1302 }
1303
1304 function catSelectOnChange(elem) {
1305         try {
1306                 var value = elem[elem.selectedIndex].value;
1307                 var def = elem.getAttribute('default');
1308
1309                 if (value == "ADD_CAT") {
1310
1311                         if (def)
1312                                 dropboxSelect(elem, def);
1313                         else
1314                                 elem.selectedIndex = 0;
1315
1316                         quickAddCat(elem);
1317                 }
1318
1319         } catch (e) {
1320                 exception_error("catSelectOnChange", e);
1321         }
1322 }
1323
1324 function quickAddCat(elem) {
1325         try {
1326                 var cat = prompt(__("Please enter category title:"));
1327
1328                 if (cat) {
1329
1330                         var query = "?op=rpc&subop=quickAddCat&cat=" + param_escape(cat);
1331
1332                         notify_progress("Loading, please wait...", true);
1333
1334                         new Ajax.Request("backend.php", {
1335                                 parameters: query,
1336                                 onComplete: function (transport) {
1337                                         var response = transport.responseXML;
1338                                         var select = response.getElementsByTagName("select")[0];
1339                                         var options = select.getElementsByTagName("option");
1340
1341                                         dropbox_replace_options(elem, options);
1342
1343                                         notify('');
1344
1345                         } });
1346
1347                 }
1348
1349         } catch (e) {
1350                 exception_error("quickAddCat", e);
1351         }
1352 }
1353
1354 function genUrlChangeKey(feed, is_cat) {
1355
1356         try {
1357                 var ok = confirm(__("Generate new syndication address for this feed?"));
1358
1359                 if (ok) {
1360
1361                         notify_progress("Trying to change address...", true);
1362
1363                         var query = "?op=rpc&subop=regenFeedKey&id=" + param_escape(feed) +
1364                                 "&is_cat=" + param_escape(is_cat);
1365
1366                         new Ajax.Request("backend.php", {
1367                                 parameters: query,
1368                                 onComplete: function(transport) {
1369                                                 var new_link = transport.responseXML.getElementsByTagName("link")[0];
1370
1371                                                 var e = $('gen_feed_url');
1372
1373                                                 if (new_link) {
1374
1375                                                         new_link = new_link.firstChild.nodeValue;
1376
1377                                                         e.innerHTML = e.innerHTML.replace(/\&amp;key=.*$/,
1378                                                                 "&amp;key=" + new_link);
1379
1380                                                         e.href = e.href.replace(/\&amp;key=.*$/,
1381                                                                 "&amp;key=" + new_link);
1382
1383                                                         new Effect.Highlight(e);
1384
1385                                                         notify('');
1386
1387                                                 } else {
1388                                                         notify_error("Could not change feed URL.");
1389                                                 }
1390                                 } });
1391                 }
1392         } catch (e) {
1393                 exception_error("genUrlChangeKey", e);
1394         }
1395         return false;
1396 }
1397
1398 function labelSelectOnChange(elem) {
1399         try {
1400                 var value = elem[elem.selectedIndex].value;
1401                 var def = elem.getAttribute('default');
1402
1403                 if (value == "ADD_LABEL") {
1404
1405                         if (def)
1406                                 dropboxSelect(elem, def);
1407                         else
1408                                 elem.selectedIndex = 0;
1409
1410                         addLabel(elem, function(transport) {
1411
1412                                         try {
1413
1414                                                 var response = transport.responseXML;
1415                                                 var select = response.getElementsByTagName("select")[0];
1416                                                 var options = select.getElementsByTagName("option");
1417
1418                                                 dropbox_replace_options(elem, options);
1419
1420                                                 notify('');
1421                                         } catch (e) {
1422                                                 exception_error("addLabel", e);
1423                                         }
1424                         });
1425                 }
1426
1427         } catch (e) {
1428                 exception_error("labelSelectOnChange", e);
1429         }
1430 }
1431
1432 function dropbox_replace_options(elem, options) {
1433
1434         try {
1435                 while (elem.hasChildNodes())
1436                         elem.removeChild(elem.firstChild);
1437
1438                 var sel_idx = -1;
1439
1440                 for (var i = 0; i < options.length; i++) {
1441                         var text = options[i].firstChild.nodeValue;
1442                         var value = options[i].getAttribute("value");
1443
1444                         if (value == undefined) value = text;
1445
1446                         var issel = options[i].getAttribute("selected") == "1";
1447
1448                         var option = new Option(text, value, issel);
1449
1450                         if (options[i].getAttribute("disabled"))
1451                                 option.setAttribute("disabled", true);
1452
1453                         elem.insert(option);
1454
1455                         if (issel) sel_idx = i;
1456                 }
1457
1458                 // Chrome doesn't seem to just select stuff when you pass new Option(x, y, true)
1459                 if (sel_idx >= 0) elem.selectedIndex = sel_idx;
1460
1461         } catch (e) {
1462                 exception_error("dropbox_replace_options", e);
1463         }
1464 }
1465
1466 // mode = all, none, invert
1467 function selectTableRows(id, mode) {
1468         try {
1469                 var rows = $(id).rows;
1470
1471                 for (var i = 0; i < rows.length; i++) {
1472                         var row = rows[i];
1473                         var cb = false;
1474
1475                         if (row.id && row.className) {
1476                                 var bare_id = row.id.replace(/^[A-Z]*?-/, "");
1477                                 var inputs = rows[i].getElementsByTagName("input");
1478
1479                                 for (var j = 0; j < inputs.length; j++) {
1480                                         var input = inputs[j];
1481
1482                                         if (input.getAttribute("type") == "checkbox" &&
1483                                                         input.id.match(bare_id)) {
1484
1485                                                 cb = input;
1486                                                 break;
1487                                         }
1488                                 }
1489
1490                                 if (cb) {
1491                                         var issel = row.hasClassName("Selected");
1492
1493                                         if (mode == "all" && !issel) {
1494                                                 row.addClassName("Selected");
1495                                                 cb.checked = true;
1496                                         } else if (mode == "none" && issel) {
1497                                                 row.removeClassName("Selected");
1498                                                 cb.checked = false;
1499                                         } else if (mode == "invert") {
1500
1501                                                 if (issel) {
1502                                                         row.removeClassName("Selected");
1503                                                         cb.checked = false;
1504                                                 } else {
1505                                                         row.addClassName("Selected");
1506                                                         cb.checked = true;
1507                                                 }
1508                                         }
1509                                 }
1510                         }
1511                 }
1512
1513         } catch (e) {
1514                 exception_error("selectTableRows", e);
1515
1516         }
1517 }
1518
1519 function getSelectedTableRowIds(id) {
1520         var rows = [];
1521
1522         try {
1523                 var elem_rows = $(id).rows;
1524
1525                 for (i = 0; i < elem_rows.length; i++) {
1526                         if (elem_rows[i].hasClassName("Selected")) {
1527                                 var bare_id = elem_rows[i].id.replace(/^[A-Z]*?-/, "");
1528                                 rows.push(bare_id);
1529                         }
1530                 }
1531
1532         } catch (e) {
1533                 exception_error("getSelectedTableRowIds", e);
1534         }
1535
1536         return rows;
1537 }
1538