offline.js

   1 var SCHEMA_VERSION = 10;
   2
   3 var offline_mode = false;
   4 var store = false;
   5 var localServer = false;
   6 var db = false;
   7 var articles_synced = 0;
   8 var sync_in_progress = false;
   9
  10 function view_offline(id, feed_id) {
  11         try {
  12
  13                 enableHotkeys();
  14                 showArticleInHeadlines(id);
  15
  16                 db.execute("UPDATE articles SET unread = 0 WHERE id = ?", [id]);
  17
  18                 var rs = db.execute("SELECT * FROM articles WHERE id = ?", [id]);
  19
  20                 if (rs.isValidRow()) {
  21
  22                         var tmp = "<div class=\"postReply\">";
  23
  24                         tmp += "<div class=\"postHeader\" onmouseover=\"enable_resize(true)\" "+
  25                                 "onmouseout=\"enable_resize(false)\">";
  26
  27                         tmp += "<div class=\"postDate\">"+rs.fieldByName("updated")+"</div>";
  28
  29                         if (rs.fieldByName("link") != "") {
  30                                 tmp += "<div clear='both'><a target=\"_blank\" "+
  31                                         "href=\"" + rs.fieldByName("link") + "\">" +
  32                                         rs.fieldByName("title") + "</a></div>";
  33                         } else {
  34                                 tmp += "<div clear='both'>" + rs.fieldByName("title") + "</div>";
  35                         }
  36
  37 /*                      tmp += "<div style='float : right'> "+
  38                                 "<img src='images/tag.png' class='tagsPic' alt='Tags' title='Tags'>";
  39                         tmp += rs.fieldByName("tags");
  40                         tmp += "</div>"; */
  41
  42 /*                      tmp += "<div clear='both'>"+
  43                                 "<a target=\"_blank\" "+
  44                                         "href=\"" + rs.fieldByName("comments") + "\">" +
  45                                         __("comments") + "</a></div>"; */
  46
  47                         tmp += "</div>";
  48
  49                         tmp += "<div class=\"postContent\">"
  50                         tmp += rs.fieldByName("content");
  51                         tmp += "</div>";
  52
  53                         tmp += "</div>";
  54
  55                         render_article(tmp);
  56                         update_local_feedlist_counters();
  57                 }
  58
  59                 rs.close();
  60
  61                 return false;
  62
  63         } catch (e) {
  64                 exception_error("view_offline", e);
  65         }
  66 }
  67
  68 function viewfeed_offline(feed_id, subop, is_cat, subop_param, skip_history, offset) {
  69         try {
  70                 notify('');
  71
  72                 if (!offset) offset = 0;
  73
  74                 if (offset > 0) {
  75                         _feed_cur_page = parseInt(offset);
  76                         if (_infscroll_request_sent) {
  77                                 return;
  78                         }
  79                 } else {
  80                         _feed_cur_page = 0;
  81                         _infscroll_disable = 0;
  82                 }
  83
  84                 if (getActiveFeedId() != feed_id) {
  85                         _feed_cur_page = 0;
  86                         active_post_id = 0;
  87                         _infscroll_disable = 0;
  88                 }
  89
  90                 loading_set_progress(100);
  91
  92                 clean_feed_selections();
  93
  94                 setActiveFeedId(feed_id, is_cat);
  95
  96                 if (!is_cat) {
  97                         var feedr = $("FEEDR-" + feed_id);
  98                         if (feedr && !feedr.className.match("Selected")) {
  99                                 feedr.className = feedr.className + "Selected";
 100                         }
 101                 } else {
 102                         var feedr = $("FCAT-" + feed_id);
 103                         if (feedr && !feedr.className.match("Selected")) {
 104                                 feedr.className = feedr.className + "Selected";
 105                         }
 106                 }
 107
 108                 if (subop == "MarkAllRead") {
 109                         catchup_local_feed(feed_id, is_cat);
 110                 }
 111
 112                 disableContainerChildren("headlinesToolbar", false);
 113                 Form.enable("main_toolbar_form");
 114
 115                 var f = $("headlines-frame");
 116                 try {
 117                         if (reply.offset == 0) {
 118                                 debug("resetting headlines scrollTop");
 119                                 f.scrollTop = 0;
 120                         }
 121                 } catch (e) { };
 122
 123
 124                 var tmp = "";
 125                 var feed_title = "";
 126
 127                 if (is_cat) {
 128                         feed_title = get_local_category_title(feed_id);
 129                 } else {
 130                         feed_title = get_local_feed_title(feed_id);
 131                 }
 132
 133                 if (feed_title) {
 134
 135                         if (offset == 0) {
 136                                 tmp += "<div id=\"headlinesContainer\">";
 137
 138                                 tmp += "<div class=\"headlinesSubToolbar\">";
 139                                 tmp += "<div id=\"subtoolbar_ftitle\">";
 140                                 tmp += feed_title;
 141                                 tmp += "</div>";
 142
 143                                 var sel_all_link;
 144                                 var sel_unread_link;
 145                                 var sel_none_link;
 146                                 var sel_inv_link;
 147
 148                                 if ($("content-frame")) {
 149                                         sel_all_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, '', true)";
 150                                         sel_unread_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true)";
 151                                         sel_none_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false)";
 152                                         sel_inv_link = "javascript:invertHeadlineSelection()";
 153                                 } else {
 154                                         sel_all_link = "javascript:cdmSelectArticles('all')";
 155                                         sel_unread_link = "javascript:cdmSelectArticles('unread')";
 156                                         sel_none_link = "javascript:cdmSelectArticles('none')";
 157                                         sel_inv_link = "javascript:invertHeadlineSelection()";
 158                                 }
 159
 160                                 tmp += __('Select:')+
 161                                         " <a href=\""+sel_all_link+"\">"+__('All')+"</a>, "+
 162                                         "<a href=\""+sel_unread_link+"\">"+__('Unread')+"</a>, "+
 163                                         "<a href=\""+sel_inv_link+"\">"+__('Invert')+"</a>, "+
 164                                         "<a href=\""+sel_none_link+"\">"+__('None')+"</a>";
 165
 166                                 tmp += "&nbsp;&nbsp;";
 167
 168                                 tmp += "</div>";
 169
 170                                 tmp += "<div id=\"headlinesInnerContainer\" onscroll=\"headlines_scroll_handler()\">";
 171                                 if ($("content-frame")) {
 172                                         tmp += "<table class=\"headlinesList\" id=\"headlinesList\" cellspacing=\"0\">";
 173                                 }
 174
 175                         }
 176
 177                         var limit = 30;
 178
 179                         var toolbar_form = document.forms["main_toolbar_form"];
 180
 181                         var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex].value;
 182                         var view_mode = toolbar_form.view_mode[toolbar_form.view_mode.selectedIndex].value;
 183
 184                         var limit_qpart = "";
 185                         var strategy_qpart = "";
 186                         var mode_qpart = "";
 187                         var offset_qpart = "";
 188
 189                         if (limit != 0) {
 190                                 limit_qpart = "LIMIT " + limit;
 191                         }
 192
 193                         if (view_mode == "all_articles") {
 194                                 mode_qpart = "1";
 195                         } else if (view_mode == "adaptive") {
 196                                 if (is_cat && get_local_category_unread(feed_id) ||
 197                                         get_local_feed_unread(feed_id) > 0) {
 198                                                 mode_qpart = "unread = 1";
 199                                 } else {
 200                                         mode_qpart = "1";
 201                                 }
 202
 203                         } else if (view_mode == "marked") {
 204                                 mode_qpart = "marked = 1";
 205                         } else if (view_mode == "unread") {
 206                                 mode_qpart = "unread = 1";
 207                         } else {
 208                                 mode_qpart = "1";
 209                         }
 210
 211                         var ext_tables_qpart = "";
 212
 213                         if (is_cat) {
 214                                 if (feed_id >= 0) {
 215                                         strategy_qpart = "cat_id = " + feed_id;
 216                                 } else if (feed_id == -2) {
 217                                         strategy_qpart = "article_labels.id = articles.id";
 218                                         ext_tables_qpart = ",article_labels";
 219                                 }
 220                         } else if (feed_id > 0) {
 221                                 strategy_qpart = "feed_id = " + feed_id;
 222                         } else if (feed_id == -1) {
 223                                 strategy_qpart = "marked = 1";
 224                         } else if (feed_id == -4) {
 225                                 strategy_qpart = "1";
 226                         } else if (feed_id < -10) {
 227                                 var label_id = -11 - feed_id;
 228                                 strategy_qpart = "article_labels.id = articles.id AND label_id = " + label_id;
 229                                 ext_tables_qpart = ",article_labels";
 230                         }
 231
 232                         if (offset > 0) {
 233                                 offset_qpart = "OFFSET " + (offset*30);
 234                         } else {
 235                                 offset_qpart = "";
 236                         }
 237
 238                         var query = "SELECT *,feeds.title AS feed_title "+
 239                                 "FROM articles,feeds,categories"+ext_tables_qpart+" "+
 240                                 "WHERE " +
 241                                 "cat_id = categories.id AND " +
 242                                 "feed_id = feeds.id AND " +
 243                                 strategy_qpart +
 244                                 " AND " + mode_qpart +
 245                                 " ORDER BY updated DESC "+
 246                                 limit_qpart + " " +
 247                                 offset_qpart;
 248
 249                         var rs = db.execute(query);
 250
 251                         var line_num = offset*30;
 252
 253                         var real_feed_id = feed_id;
 254
 255                         while (rs.isValidRow()) {
 256
 257                                 var id = rs.fieldByName("id");
 258                                 var feed_id = rs.fieldByName("feed_id");
 259
 260                                 var entry_feed_title = false;
 261
 262                                 if (real_feed_id < 0 || is_cat) {
 263                                         entry_feed_title = rs.fieldByName("feed_title");
 264                                 }
 265
 266                                 var marked_pic;
 267
 268                                 var row_class = (line_num % 2) ? "even" : "odd";
 269
 270                                 if (rs.fieldByName("unread") == "1") {
 271                                         row_class += "Unread";
 272                                 }
 273
 274                                 var labels = get_local_article_labels(id);
 275
 276                                 var labels_str = "<span id=\"HLLCTR-"+id+"\">";
 277                                 labels_str += format_article_labels(labels, id);
 278                                 labels_str += "</span>";
 279
 280                                 if (rs.fieldByName("marked") == "1") {
 281                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 282                                                 "src=\"images/mark_set.png\" class=\"markedPic\""+
 283                                                 "alt=\"Unstar article\" onclick='javascript:tMark("+id+")'>";
 284                                 } else {
 285                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 286                                                 "src=\"images/mark_unset.png\" class=\"markedPic\""+
 287                                                 "alt=\"Star article\" onclick='javascript:tMark("+id+")'>";
 288                                 }
 289
 290                                 var mouseover_attrs = "onmouseover='postMouseIn($id)' "+
 291                                         "onmouseout='postMouseOut($id)'";
 292
 293                                 var content_preview = truncate_string(strip_tags(rs.fieldByName("content")),
 294                                                 100);
 295
 296                                 if ($("content-frame")) {
 297
 298                                         tmp += "<tr class='"+row_class+"' id='RROW-"+id+"' "+mouseover_attrs+">";
 299
 300                                         tmp += "<td class='hlUpdPic'> </td>";
 301
 302                                         tmp += "<td class='hlSelectRow'>"+
 303                                                 "<input type=\"checkbox\" onclick=\"tSR(this)\" id=\"RCHK-"+id+"\"></td>";
 304
 305                                         tmp += "<td class='hlMarkedPic'>"+marked_pic+"</td>";
 306
 307                                         tmp += "<td onclick='view("+id+","+feed_id+")' "+
 308                                                 "class='hlContent' valign='middle'>";
 309
 310                                         tmp += "<a target=\"_blank\" id=\"RTITLE-"+id+"\" href=\"" +
 311                                                 rs.fieldByName("link") + "\"" +
 312                                                 "onclick=\"return view("+id+","+feed_id+");\">"+
 313                                                 rs.fieldByName("title");
 314
 315                                         tmp += "<span class=\"contentPreview\"> - "+content_preview+"</span>";
 316
 317                                         tmp += "</a>";
 318
 319                                         tmp += labels_str;
 320
 321                                         if (entry_feed_title) {
 322                                                 tmp += " <span class=\"hlFeed\">"+
 323                                                         "(<a href='javascript:viewfeed("+feed_id+
 324                                                         ")'>"+entry_feed_title+"</a>)</span>";
 325                                         }
 326
 327                                         tmp += "</td>";
 328
 329                                         tmp += "<td class=\"hlUpdated\" onclick='view("+id+","+feed_id+")'>"+
 330                                                 "<nobr>"+rs.fieldByName("updated").substring(0,16)+
 331                                                 "</nobr></td>";
 332
 333                                         tmp += "</tr>";
 334                                 } else {
 335
 336                                         var add_class = "";
 337
 338                                         if (rs.fieldByName("unread") == "1") {
 339                                                 add_class = "Unread";
 340                                         }
 341
 342                                         tmp += "<div class=\"cdmArticle"+add_class+"\" id=\"RROW-"+id+"\" "+
 343                                                 mouseover_attrs+"'>";
 344
 345                                         feed_icon_img = "<img class=\"tinyFeedIcon\" src=\""+
 346                                                 getInitParam("icons_url")+"/"+feed_id+".ico\" alt=\"\">";
 347                                         cdm_feed_icon = "<span style=\"cursor : pointer\" "+
 348                                                 "onclick=\"viewfeed("+feed_id+")\">"+feed_icon_img+"</span>";
 349
 350                                         tmp += "<div class=\"cdmHeader\">";
 351                                         tmp += "<div class=\"articleUpdated\">"+
 352                                                 rs.fieldByName("updated").substring(0,16)+
 353                                                 " "+cdm_feed_icon+"</div>";
 354
 355                                         tmp += "<span id=\"RTITLE-"+id+"\" class=\"titleWrap\">"+
 356                                                 "<a class=\"title\" onclick=\"javascript:toggleUnread("+id+", 0)\""+
 357                                                 "target=\"_blank\" href=\""+rs.fieldByName("link")+
 358                                                 "\">"+rs.fieldByName("title")+"</a>";
 359
 360                                         tmp += labels_str;
 361
 362                                         if (entry_feed_title) {
 363                                                 tmp += "&nbsp;(<a href='javascript:viewfeed("+feed_id+
 364                                                         ")'>"+entry_feed_title+"</a>)";
 365                                         }
 366
 367                                         tmp += "</span></div>";
 368
 369                                         tmp += "<div class=\"cdmContent\" onclick=\"cdmClicked("+id+")\""+
 370                                                 "id=\"CICD-"+id+"\">";
 371                                         tmp += rs.fieldByName("content");
 372                                         tmp += "<br clear='both'>"
 373                                         tmp += "</div>";
 374
 375                                         tmp += "<div class=\"cdmFooter\"><span class='s0'>";
 376                                         tmp += __("Select:")+
 377                                                 " <input type=\"checkbox\" "+
 378                                                 "onclick=\"toggleSelectRowById(this, 'RROW-"+id+"')\" "+
 379                                                 "class=\"feedCheckBox\" id=\"RCHK-"+id+"\">";
 380
 381                                         tmp += "</span><span class='s1'>"+marked_pic+"</span> ";
 382
 383 /*                                      tmp += "<span class='s1'>"+
 384                                                 "<img class='tagsPic' src='images/tag.png' alt='Tags' title='Tags'>"+
 385                                                 "<span id=\"ATSTR-"+id+"\">"+rs.fieldByName("tags")+"</span>"+
 386                                                 "</span>"; */
 387
 388                                         tmp += "<span class='s2'>Toggle: <a class=\"cdmToggleLink\""+
 389                                                 "href=\"javascript:toggleUnread("+id+")\">"+
 390                                                 "Unread</a></span>";
 391                                         tmp += "</div>";
 392
 393                                         tmp += "</div>";
 394                                 }
 395
 396                                 rs.next();
 397                                 line_num++;
 398                         }
 399
 400                         if (line_num - offset*30 < 30) {
 401                                 _infscroll_disable = 1;
 402                         }
 403
 404                         rs.close();
 405
 406                         if (offset == 0) {
 407                                 tmp += "</table>";
 408
 409                                 if (line_num - offset*30 == 0) {
 410                                         tmp += "<div class='whiteBox'>" +
 411                                                 __("No articles found to display.") +
 412                                                 "</div>";
 413                                 }
 414                                 tmp += "</div></div>";
 415                         }
 416
 417                         if (offset == 0) {
 418                                 var container = $("headlines-frame");
 419                                 container.innerHTML = tmp;
 420                         } else {
 421                                 var ids = getSelectedArticleIds2();
 422
 423                                 var container = $("headlinesList");
 424                                 container.innerHTML = container.innerHTML + tmp;
 425
 426                                 for (var i = 0; i < ids.length; i++) {
 427                                         markHeadline(ids[i]);
 428                                 }
 429                         }
 430                 }
 431
 432                 remove_splash();
 433
 434                 _infscroll_request_sent = 0;
 435
 436         } catch (e) {
 437                 exception_error("viewfeed_offline", e);
 438         }
 439 }
 440
 441 function render_offline_feedlist() {
 442         try {
 443                 var cats_enabled = getInitParam("enable_feed_cats") == "1";
 444
 445                 var tmp = "<ul class=\"feedList\" id=\"feedList\">";
 446
 447                 var unread = get_local_feed_unread(-4);
 448
 449                 global_unread = unread;
 450                 updateTitle();
 451
 452                 if (cats_enabled) {
 453                         tmp += printCategoryHeader(-1, is_local_cat_collapsed(-1), false);
 454                 }
 455
 456                 tmp += printFeedEntry(-4, __("All articles"), "feed", unread,
 457                         "images/tag.png");
 458
 459                 var unread = get_local_feed_unread(-1);
 460
 461                 tmp += printFeedEntry(-1, __("Starred articles"), "feed", unread,
 462                         "images/mark_set.png");
 463
 464                 if (cats_enabled) {
 465                         tmp += "</ul></li>";
 466                 } else {
 467                         tmp += "<li><hr/></li>";
 468                 }
 469
 470                 if (cats_enabled) {
 471                         tmp += printCategoryHeader(-2, is_local_cat_collapsed(-2), false);
 472                 }
 473
 474                 var rs = db.execute("SELECT id,caption "+
 475                         "FROM labels "+
 476                         "ORDER BY caption");
 477
 478                 while (rs.isValidRow()) {
 479                         var id = -11 - parseInt(rs.field(0));
 480                         var caption = rs.field(1);
 481                         var unread = get_local_feed_unread(id);
 482
 483                         tmp += printFeedEntry(id, caption, "feed", unread,
 484                                 "images/label.png");
 485
 486                         rs.next();
 487                 }
 488
 489                 rs.close();
 490
 491                 if (cats_enabled) {
 492                         tmp += "</ul></li>";
 493                 } else {
 494                         tmp += "<li><hr/></li>";
 495                 }
 496
 497 /*              var rs = db.execute("SELECT feeds.id,feeds.title,has_icon,COUNT(articles.id) "+
 498                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 499                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 500                         "ORDER BY feeds.title"); */
 501
 502                 var order_by = "feeds.title";
 503
 504                 if (cats_enabled) order_by = "categories.title," + order_by;
 505
 506                 var rs = db.execute("SELECT "+
 507                         "feeds.id,feeds.title,has_icon,cat_id,collapsed "+
 508                         "FROM feeds,categories WHERE cat_id = categories.id "+
 509                         "ORDER BY "+order_by);
 510
 511                 var tmp_cat_id = -1;
 512
 513                 while (rs.isValidRow()) {
 514
 515                         var id = rs.field(0);
 516                         var title = rs.field(1);
 517                         var has_icon = rs.field(2);
 518                         var unread = get_local_feed_unread(id);
 519                         var cat_id = rs.field(3);
 520                         var cat_hidden = rs.field(4);
 521
 522                         if (cat_id != tmp_cat_id && cats_enabled) {
 523                                 if (tmp_cat_id != -1) {
 524                                         tmp += "</ul></li>";
 525                                 }
 526                                 tmp += printCategoryHeader(cat_id, cat_hidden, true);
 527                                 tmp_cat_id = cat_id;
 528                         }
 529
 530                         var icon = "";
 531
 532                         if (has_icon) {
 533                                 icon = getInitParam("icons_url") + "/" + id + ".ico";
 534                         }
 535
 536                         var feed_icon = "";
 537
 538                         var row_class = "feed";
 539
 540                         if (unread > 0) {
 541                                 row_class += "Unread";
 542                                 fctr_class = "feedCtrHasUnread";
 543                         } else {
 544                                 fctr_class = "feedCtrNoUnread";
 545                         }
 546
 547                         tmp += printFeedEntry(id, title, "feed", unread, icon);
 548
 549                         rs.next();
 550                 }
 551
 552                 rs.close();
 553
 554                 if (cats_enabled) {
 555                         tmp += "</ul>";
 556                 }
 557
 558                 tmp += "</ul>";
 559
 560                 render_feedlist(tmp);
 561         } catch (e) {
 562                 exception_error("render_offline_feedlist", e);
 563         }
 564 }
 565
 566 function init_offline() {
 567         try {
 568                 offline_mode = true;
 569                 store.enabled = true;
 570
 571                 Element.hide("dispSwitchPrompt");
 572                 Element.hide("feedBrowserPrompt");
 573
 574                 Element.hide("topLinksOnline");
 575                 Element.show("topLinksOffline");
 576
 577                 var tb_form = $("main_toolbar_form");
 578                 Element.hide(tb_form.update);
 579
 580                 var chooser = $("quickMenuChooser");
 581                 chooser.disabled = true;
 582
 583                 var rs = db.execute("SELECT key, value FROM init_params");
 584
 585                 while (rs.isValidRow()) {
 586                         init_params[rs.field(0)] = rs.field(1);
 587                         rs.next();
 588                 }
 589
 590                 rs.close();
 591
 592                 var rs = db.execute("SELECT COUNT(*) FROM feeds");
 593
 594                 var num_feeds = 0;
 595
 596                 if (rs.isValidRow()) {
 597                         num_feeds = rs.field(0);
 598                 }
 599
 600                 rs.close();
 601
 602                 if (num_feeds == 0) {
 603                         remove_splash();
 604                         return fatalError(0,
 605                                 __("Data for offline browsing has not been downloaded yet."));
 606                 }
 607
 608                 render_offline_feedlist();
 609                 init_second_stage();
 610                 window.setTimeout("viewfeed(-4)", 50);
 611
 612         } catch (e) {
 613                 exception_error("init_offline", e);
 614         }
 615 }
 616
 617 function offline_download_parse(stage, transport) {
 618         try {
 619                 if (transport.responseXML) {
 620
 621                         var sync_ok = transport.responseXML.getElementsByTagName("sync-ok");
 622
 623                         if (sync_ok.length > 0) {
 624                                 for (var i = 0; i < sync_ok.length; i++) {
 625                                         var id = sync_ok[i].getAttribute("id");
 626                                         if (id) {
 627                                                 debug("synced offline info for id " + id);
 628                                                 db.execute("UPDATE articles SET modified = '' WHERE id = ?", [id]);
 629                                         }
 630                                 }
 631                         }
 632
 633                         if (stage == 0) {
 634
 635                                 var feeds = transport.responseXML.getElementsByTagName("feed");
 636
 637                                 if (feeds.length > 0) {
 638                                         db.execute("DELETE FROM feeds");
 639                                 }
 640
 641                                 for (var i = 0; i < feeds.length; i++) {
 642                                         var id = feeds[i].getAttribute("id");
 643                                         var has_icon = feeds[i].getAttribute("has_icon");
 644                                         var title = feeds[i].firstChild.nodeValue;
 645                                         var cat_id = feeds[i].getAttribute("cat_id");
 646
 647                                         db.execute("INSERT INTO feeds (id,title,has_icon,cat_id)"+
 648                                                 "VALUES (?,?,?,?)",
 649                                                 [id, title, has_icon, cat_id]);
 650                                 }
 651
 652                                 var cats = transport.responseXML.getElementsByTagName("category");
 653
 654                                 if (feeds.length > 0) {
 655                                         db.execute("DELETE FROM categories");
 656                                 }
 657
 658                                 for (var i = 0; i < cats.length; i++) {
 659                                         var id = cats[i].getAttribute("id");
 660                                         var collapsed = cats[i].getAttribute("collapsed");
 661                                         var title = cats[i].firstChild.nodeValue;
 662
 663                                         db.execute("INSERT INTO categories (id,title,collapsed)"+
 664                                                 "VALUES (?,?,?)",
 665                                                 [id, title, collapsed]);
 666                                 }
 667
 668                                 var labels = transport.responseXML.getElementsByTagName("label");
 669
 670                                 if (labels.length > 0) {
 671                                         db.execute("DELETE FROM labels");
 672                                 }
 673
 674                                 for (var i = 0; i < labels.length; i++) {
 675                                         var id = labels[i].getAttribute("id");
 676                                         var fg_color = labels[i].getAttribute("fg_color");
 677                                         var bg_color = labels[i].getAttribute("bg_color");
 678                                         var caption = labels[i].firstChild.nodeValue;
 679
 680                                         db.execute("INSERT INTO labels (id,caption,fg_color,bg_color)"+
 681                                                 "VALUES (?,?,?,?)",
 682                                                 [id, caption, fg_color, bg_color]);
 683                                 }
 684
 685                                 window.setTimeout("update_offline_data("+(stage+1)+")", 5*1000);
 686                         } else {
 687
 688                                 var articles = transport.responseXML.getElementsByTagName("article");
 689
 690                                 var limit = transport.responseXML.getElementsByTagName("limit")[0];
 691
 692                                 if (limit) {
 693                                         limit = limit.getAttribute("value");
 694                                 } else {
 695                                         limit = 0;
 696                                 }
 697
 698                                 var articles_found = 0;
 699
 700                                 for (var i = 0; i < articles.length; i++) {
 701                                         var a = eval("("+articles[i].firstChild.nodeValue+")");
 702                                         articles_found++;
 703                                         if (a) {
 704
 705                                                 db.execute("DELETE FROM articles WHERE id = ?", [a.id]);
 706
 707                                                 db.execute("INSERT INTO articles "+
 708                                                 "(id, feed_id, title, link, guid, updated, content, "+
 709                                                         "unread, marked, tags, comments) "+
 710                                                 "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
 711                                                         [a.id, a.feed_id, a.title, a.link, a.guid, a.updated,
 712                                                                 a.content, a.unread, a.marked, a.tags,
 713                                                                 a.comments]);
 714
 715                                                 if (a.labels.length > 0) {
 716                                                         for (var j = 0; j < a.labels.length; j++) {
 717                                                                 label_local_add_article(a.id, a.labels[j][0]);
 718                                                         }
 719                                                 }
 720
 721                                         }
 722                                 }
 723
 724                                 debug("downloaded articles: " + articles_found + " limit: " + limit);
 725
 726                                 articles_synced += articles_found;
 727
 728                                 var msg =__("Synchronizing (got %d articles)...").replace("%d", articles_synced);
 729
 730                                 $("offlineModeSyncMsg").innerHTML = msg;
 731
 732                                 var has_sync_data = has_local_sync_data();
 733
 734                                 if (articles_found >= limit || has_sync_data) {
 735                                         window.setTimeout("update_offline_data("+(stage+1)+")", 5*1000);
 736                                         debug("<b>update_offline_data: done " + stage + " HSD: " +
 737                                                 has_sync_data + "</b>");
 738                                 } else {
 739                                         window.setTimeout("update_offline_data(0)", 180*1000);
 740                                         debug("update_offline_data: finished");
 741
 742                                         var pic = $("offlineModePic");
 743
 744                                         if (pic) {
 745                                                 pic.src = "images/offline.png";
 746
 747                                                 var rs = db.execute("SELECT value FROM syncdata WHERE key = 'last_online'");
 748                                                 var last_sync = "";
 749
 750                                                 if (rs.isValidRow()) {
 751                                                         last_sync = rs.field(0).substring(0,16);
 752                                                 }
 753                                                 rs.close();
 754
 755                                                 var msg = __("Last sync: %s").replace("%s", last_sync);
 756
 757                                                 articles_synced = 0;
 758
 759                                                 $("offlineModeSyncMsg").innerHTML = msg;
 760                                         }
 761
 762                                         var hide_elems = $$("div.hideWhenSyncing");
 763
 764                                         for (var j = 0; j < hide_elems.length; j++) {
 765                                                 Element.show(hide_elems[j]);
 766                                         }
 767
 768                                         sync_in_progress = false;
 769
 770                                         db.execute("DELETE FROM articles WHERE "+
 771                                                 "updated < DATETIME('NOW', 'localtime', '-31 days')");
 772
 773                                 }
 774                         }
 775
 776                         update_local_sync_data();
 777
 778
 779 //                      notify('');
 780
 781                 }
 782         } catch (e) {
 783                 exception_error("offline_download_parse", e);
 784         }
 785 }
 786
 787 function update_offline_data(stage) {
 788         try {
 789
 790                 if (!stage) stage = 0;
 791
 792                 if (!db || offline_mode || getInitParam("offline_enabled") != "1") return;
 793
 794 //              notify_progress("Updating offline data... (" + stage +")", true);
 795
 796                 var query = "backend.php?op=rpc&subop=download";
 797
 798                 var rs = db.execute("SELECT MAX(id), MIN(id) FROM articles");
 799
 800                 if (rs.isValidRow() && rs.field(0)) {
 801                         var offline_dl_max_id = rs.field(0);
 802                         var offline_dl_min_id = rs.field(1);
 803
 804                         query = query + "&cidt=" + offline_dl_max_id;
 805                         query = query + "&cidb=" + offline_dl_min_id;
 806
 807                         stage = 1;
 808                 }
 809
 810                 rs.close();
 811
 812                 debug("update_offline_data: stage " + stage);
 813
 814                 query = query + "&stage=" + stage;
 815
 816                 var to_sync = prepare_local_sync_data();
 817
 818                 if (to_sync != "") {
 819                         to_sync = "?sync=" + param_escape(to_sync);
 820                 }
 821
 822                 debug(query + "/" + to_sync);
 823
 824                 var pic = $("offlineModePic");
 825
 826                 if (pic) {
 827                         pic.src = "images/offline-sync.gif";
 828                         if (articles_synced == 0) {
 829                                 $("offlineModeSyncMsg").innerHTML = __("Synchronizing...");
 830                         }
 831                 }
 832
 833                 var hide_elems = $$("div.hideWhenSyncing");
 834
 835                 for (var j = 0; j < hide_elems.length; j++) {
 836                         Element.hide(hide_elems[j]);
 837                 }
 838
 839                 sync_in_progress = true;
 840
 841                 new Ajax.Request(query, {
 842                         parameters: to_sync,
 843                         onComplete: function(transport) {
 844                                 offline_download_parse(stage, transport);
 845                         } });
 846
 847         } catch (e) {
 848                 exception_error("initiate_offline_download", e);
 849         }
 850 }
 851
 852 function set_feedlist_counter(id, ctr, is_cat) {
 853         try {
 854
 855                 var feedctr = $("FEEDCTR-" + id);
 856                 var feedu = $("FEEDU-" + id);
 857                 var feedr = $("FEEDR-" + id);
 858
 859                 if (is_cat) {
 860                         var catctr = $("FCATCTR-" + id);
 861                         if (catctr) {
 862                                 catctr.innerHTML = "(" + ctr + ")";
 863                                 if (ctr > 0) {
 864                                         catctr.className = "catCtrHasUnread";
 865                                 } else {
 866                                         catctr.className = "catCtrNoUnread";
 867                                 }
 868                         }
 869                 } else if (feedctr && feedu && feedr) {
 870
 871                         var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 872
 873                         feedu.innerHTML = ctr;
 874
 875                         if (ctr > 0) {
 876                                 feedctr.className = "feedCtrHasUnread";
 877                                 if (!feedr.className.match("Unread")) {
 878                                         var is_selected = feedr.className.match("Selected");
 879
 880                                         feedr.className = feedr.className.replace("Selected", "");
 881                                         feedr.className = feedr.className.replace("Unread", "");
 882
 883                                         feedr.className = feedr.className + "Unread";
 884
 885                                         if (is_selected) {
 886                                                 feedr.className = feedr.className + "Selected";
 887                                         }
 888
 889                                 }
 890
 891                                 if (row_needs_hl) {
 892                                         new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 893                                                 queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 894                                 }
 895                         } else {
 896                                 feedctr.className = "feedCtrNoUnread";
 897                                 feedr.className = feedr.className.replace("Unread", "");
 898                         }
 899                 }
 900
 901         } catch (e) {
 902                 exception_error("set_feedlist_counter", e);
 903         }
 904 }
 905
 906 function update_local_feedlist_counters() {
 907         try {
 908                 if (!offline_mode || !db) return;
 909
 910 /*              var rs = db.execute("SELECT feeds.id,COUNT(articles.id) "+
 911                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 912                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 913                         "ORDER BY feeds.title"); */
 914
 915                 var rs = db.execute("SELECT id FROM feeds "+
 916                         "ORDER BY title");
 917
 918                 while (rs.isValidRow()) {
 919                         var id = rs.field(0);
 920                         var ctr = get_local_feed_unread(id);
 921                         set_feedlist_counter(id, ctr, false);
 922                         rs.next();
 923                 }
 924
 925                 rs.close();
 926
 927                 var rs = db.execute("SELECT cat_id,SUM(unread) "+
 928                         "FROM articles, feeds WHERE feeds.id = feed_id GROUP BY cat_id");
 929
 930                 while (rs.isValidRow()) {
 931                         var id = rs.field(0);
 932                         var ctr = rs.field(1);
 933                         set_feedlist_counter(id, ctr, true);
 934                         rs.next();
 935                 }
 936
 937                 rs.close();
 938
 939                 set_feedlist_counter(-2, get_local_category_unread(-2), true);
 940
 941                 set_feedlist_counter(-4, get_local_feed_unread(-4));
 942                 set_feedlist_counter(-1, get_local_feed_unread(-1));
 943
 944                 var rs = db.execute("SELECT id FROM labels");
 945
 946                 while (rs.isValidRow()) {
 947                         var id = -11 - rs.field(0);
 948                         var ctr = get_local_feed_unread(id);
 949                         set_feedlist_counter(id, ctr, false);
 950                         rs.next();
 951                 }
 952
 953                 rs.close();
 954
 955                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 956
 957                 global_unread = get_local_feed_unread(-4);
 958                 updateTitle();
 959
 960         } catch (e) {
 961                 exception_error("update_local_feedlist_counters", e);
 962         }
 963 }
 964
 965 function get_local_feed_unread(id) {
 966         try {
 967                 var rs;
 968
 969                 if (id == -4) {
 970                         rs = db.execute("SELECT SUM(unread) FROM articles");
 971                 } else if (id == -1) {
 972                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE marked = 1");
 973                 } else if (id > 0) {
 974                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE feed_id = ?", [id]);
 975                 } else if (id < -10) {
 976                         var label_id = -11 - id;
 977                         rs = db.execute("SELECT SUM(unread) FROM articles,article_labels "+
 978                                 "WHERE article_labels.id = articles.id AND label_id = ?", [label_id]);
 979                 }
 980
 981                 var a = false;
 982
 983                 if (rs.isValidRow()) {
 984                         a = rs.field(0);
 985                 } else {
 986                         a = 0;
 987                 }
 988
 989                 rs.close();
 990
 991                 return a;
 992
 993         } catch (e) {
 994                 exception_error("get_local_feed_unread", e);
 995         }
 996 }
 997
 998 function enable_offline_reading() {
 999         try {
1000
1001                 if (db && getInitParam("offline_enabled") == "1") {
1002                         init_local_sync_data();
1003                         Element.show("offlineModePic");
1004                         offlineDownloadStart();
1005                 }
1006
1007         } catch (e) {
1008                 exception_error("enable_offline_reading", e);
1009         }
1010 }
1011
1012 function init_gears() {
1013         try {
1014
1015                 if (window.google && google.gears) {
1016                         localServer = google.gears.factory.create("beta.localserver");
1017                         store = localServer.createManagedStore("tt-rss");
1018                         store.manifestUrl = "manifest.json.php";
1019                         store.checkForUpdate();
1020                         store.enabled = false;
1021
1022                         db = google.gears.factory.create('beta.database');
1023                         db.open('tt-rss');
1024
1025                         db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
1026
1027                         var rs = db.execute("SELECT schema_version FROM version");
1028
1029                         var version = "";
1030
1031                         if (rs.isValidRow()) {
1032                                 version = rs.field(0);
1033                         }
1034
1035                         rs.close();
1036
1037                         if (version != SCHEMA_VERSION) {
1038                                 db.execute("DROP TABLE IF EXISTS init_params");
1039                                 db.execute("DROP TABLE IF EXISTS cache");
1040                                 db.execute("DROP TABLE IF EXISTS feeds");
1041                                 db.execute("DROP TABLE IF EXISTS categories");
1042                                 db.execute("DROP TABLE IF EXISTS labels");
1043                                 db.execute("DROP TABLE IF EXISTS article_labels");
1044                                 db.execute("DROP TABLE IF EXISTS articles");
1045                                 db.execute("DROP INDEX IF EXISTS article_labels_label_id_idx");
1046                                 db.execute("DROP INDEX IF EXISTS articles_unread_idx");
1047                                 db.execute("DROP INDEX IF EXISTS articles_feed_id_idx");
1048                                 db.execute("DROP INDEX IF EXISTS articles_id_idx");
1049                                 db.execute("DROP INDEX IF EXISTS article_labels_id_idx");
1050                                 db.execute("DROP TABLE IF EXISTS version");
1051                                 db.execute("DROP TRIGGER IF EXISTS articles_update_unread");
1052                                 db.execute("DROP TRIGGER IF EXISTS articles_update_marked");
1053                                 db.execute("DROP TRIGGER IF EXISTS articles_remove_labelrefs");
1054                                 db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
1055                                 db.execute("DROP TABLE IF EXISTS syncdata");
1056                                 db.execute("INSERT INTO version (schema_version) VALUES (?)",
1057                                         [SCHEMA_VERSION]);
1058                         }
1059
1060                         db.execute("CREATE TABLE IF NOT EXISTS init_params (key text, value text)");
1061
1062                         db.execute("CREATE TABLE IF NOT EXISTS cache (id integer, article text, param text, added text)");
1063                         db.execute("CREATE TABLE IF NOT EXISTS feeds (id integer, title text, has_icon integer, cat_id integer)");
1064                         db.execute("CREATE TABLE IF NOT EXISTS categories (id integer, title text, collapsed integer)");
1065                         db.execute("CREATE TABLE IF NOT EXISTS labels (id integer, caption text, fg_color text, bg_color text)");
1066                         db.execute("CREATE TABLE IF NOT EXISTS article_labels (id integer, label_id integer)");
1067                         db.execute("CREATE TABLE IF NOT EXISTS articles (id integer, feed_id integer, title text, link text, guid text, updated timestamp, content text, tags text, unread integer, marked integer, added text, modified timestamp, comments text)");
1068
1069                         db.execute("CREATE INDEX IF NOT EXISTS articles_unread_idx ON articles(unread)");
1070                         db.execute("CREATE INDEX IF NOT EXISTS article_labels_label_id_idx ON article_labels(label_id)");
1071                         db.execute("CREATE INDEX IF NOT EXISTS articles_feed_id_idx ON articles(feed_id)");
1072                         db.execute("CREATE INDEX IF NOT EXISTS articles_id_idx ON articles(id)");
1073                         db.execute("CREATE INDEX IF NOT EXISTS article_labels_id_idx ON article_labels(id)");
1074
1075                         db.execute("CREATE TABLE IF NOT EXISTS syncdata (key integer, value text)");
1076
1077                         db.execute("DELETE FROM cache WHERE id LIKE 'F:%' OR id LIKE 'C:%'");
1078
1079                         db.execute("CREATE TRIGGER IF NOT EXISTS articles_update_unread "+
1080                                 "UPDATE OF unread ON articles "+
1081                                 "BEGIN "+
1082                                 "UPDATE articles SET modified = DATETIME('NOW', 'localtime') "+
1083                                 "WHERE id = OLD.id AND "+
1084                                 "OLD.unread != NEW.unread;"+
1085                                 "END;");
1086
1087                         db.execute("CREATE TRIGGER IF NOT EXISTS articles_update_marked "+
1088                                 "UPDATE OF marked ON articles "+
1089                                 "BEGIN "+
1090                                 "UPDATE articles SET modified = DATETIME('NOW', 'localtime') "+
1091                                 "WHERE id = OLD.id;"+
1092                                 "END;");
1093
1094                         db.execute("CREATE TRIGGER IF NOT EXISTS articles_remove_labelrefs "+
1095                                 "DELETE ON articles "+
1096                                 "BEGIN "+
1097                                 "DELETE FROM article_labels WHERE id = OLD.id; "+
1098                                 "END; ");
1099
1100                 }
1101
1102                 cache_expire();
1103
1104         } catch (e) {
1105                 exception_error("init_gears", e);
1106         }
1107 }
1108
1109 function gotoOffline() {
1110         window.location.href = "tt-rss.php?offline=1";
1111 }
1112
1113 function gotoOnline() {
1114         window.location.href = "tt-rss.php";
1115 }
1116
1117 function local_collapse_cat(id) {
1118         try {
1119                 if (db) {
1120                         db.execute("UPDATE categories SET collapsed = NOT collapsed WHERE id = ?",
1121                                 [id]);
1122                 }
1123         } catch (e) {
1124                 exception_error("local_collapse_cat", e);
1125         }
1126 }
1127
1128 function get_local_category_title(id) {
1129         try {
1130
1131                 var rs = db.execute("SELECT title FROM categories WHERE id = ?", [id]);
1132                 var tmp = "";
1133
1134                 if (rs.isValidRow()) {
1135                         tmp = rs.field(0);
1136                 }
1137
1138                 rs.close();
1139
1140                 return tmp;
1141
1142         } catch (e) {
1143                 exception_error("get_local_category_title", e);
1144         }
1145 }
1146
1147 function get_local_category_unread(id) {
1148         try {
1149                 var rs = false;
1150
1151                 if (id >= 0) {
1152                         rs = db.execute("SELECT SUM(unread) FROM articles, feeds "+
1153                                 "WHERE feeds.id = feed_id AND cat_id = ?", [id]);
1154                 } else if (id == -2) {
1155                         rs = db.execute("SELECT SUM(unread) FROM article_labels, articles "+
1156                                 "where article_labels.id = articles.id");
1157                 } else {
1158                         return 0;
1159                 }
1160
1161                 var tmp = 0;
1162
1163                 if (rs.isValidRow()) {
1164                         tmp = rs.field(0);
1165                 }
1166
1167                 rs.close();
1168
1169                 return tmp;
1170
1171         } catch (e) {
1172                 exception_error("get_local_category_unread", e);
1173         }
1174 }
1175
1176 function printCategoryHeader(cat_id, hidden, can_browse) {
1177         try {
1178                 if (hidden == undefined) hidden = false;
1179                 if (can_browse == undefined) can_browse = false;
1180
1181                         var tmp_category = get_local_category_title(cat_id);
1182                         var tmp = "";
1183
1184                         var cat_unread = get_local_category_unread(cat_id);
1185
1186                         var holder_style = "";
1187                         var ellipsis = "";
1188
1189                         if (hidden) {
1190                                 holder_style = "display:none;";
1191                                 ellipsis = "…";
1192                         }
1193
1194                         var catctr_class = (cat_unread > 0) ? "catCtrHasUnread" : "catCtrNoUnread";
1195
1196                         var browse_cat_link = "";
1197                         var inner_title_class = "catTitleNL";
1198
1199                         if (can_browse) {
1200                                 browse_cat_link = "onclick=\"javascript:viewCategory("+cat_id+")\"";
1201                                 inner_title_class = "catTitle";
1202                         }
1203
1204                         var cat_class = "feedCat";
1205
1206                         tmp += "<li class=\""+cat_class+"\" id=\"FCAT-"+cat_id+"\">"+
1207                                 "<img onclick=\"toggleCollapseCat("+cat_id+")\" class=\"catCollapse\""+
1208                                         " title=\""+__('Click to collapse category')+"\""+
1209                                         " src=\"images/cat-collapse.png\"><span class=\""+inner_title_class+"\" "+
1210                                         " id=\"FCATN-"+cat_id+"\" "+browse_cat_link+
1211                                 "\">"+tmp_category+"</span>";
1212
1213                         tmp += "<span id=\"FCAP-"+cat_id+"\">";
1214
1215                         tmp += " <span id=\"FCATCTR-"+cat_id+"\" "+
1216                                 "class=\""+catctr_class+"\">("+cat_unread+")</span> "+ellipsis;
1217
1218                         tmp += "</span>";
1219
1220                         tmp += "<ul class=\"feedCatList\" id=\"FCATLIST-"+cat_id+"\" "+
1221                                 "style='"+holder_style+"'>";
1222
1223                         return tmp;
1224         } catch (e) {
1225                 exception_error("printCategoryHeader", e);
1226         }
1227 }
1228
1229 function is_local_cat_collapsed(id) {
1230         try {
1231
1232                 var rs = db.execute("SELECT collapsed FROM categories WHERE id = ?", [id]);
1233                 var cat_hidden = 0;
1234
1235                 if (rs.isValidRow()) {
1236                         cat_hidden = rs.field(0);
1237                 }
1238
1239                 rs.close();
1240
1241                 return cat_hidden == "1";
1242
1243         } catch (e) {
1244                 exception_error("is_local_cat_collapsed", e);
1245         }
1246 }
1247
1248 function get_local_article_labels(id) {
1249         try {
1250                 var rs = db.execute("SELECT DISTINCT label_id,caption,fg_color,bg_color "+
1251                         "FROM labels, article_labels "+
1252                         "WHERE labels.id = label_id AND article_labels.id = ?", [id]);
1253
1254                 var tmp = new Array();
1255
1256                 while (rs.isValidRow()) {
1257                         var e = new Array();
1258
1259                         e[0] = rs.field(0);
1260                         e[1] = rs.field(1);
1261                         e[2] = rs.field(2);
1262                         e[3] = rs.field(3);
1263
1264                         tmp.push(e);
1265
1266                         rs.next();
1267                 }
1268
1269                 return tmp;
1270
1271         } catch (e) {
1272                 exception_error("get_local_article_labels", e);
1273         }
1274 }
1275
1276 function label_local_add_article(id, label_id) {
1277         try {
1278                 //debug("label_local_add_article " + id + " => " + label_id);
1279
1280                 var rs = db.execute("SELECT COUNT(id) FROM article_labels WHERE "+
1281                         "id = ? AND label_id = ?", [id, label_id]);
1282                 var check = rs.field(0);
1283
1284                 if (rs.isValidRow()) {
1285                         var check = rs.field(0);
1286                 }
1287                 rs.close();
1288
1289                 if (check == 0) {
1290                         db.execute("INSERT INTO article_labels (id, label_id) VALUES "+
1291                                 "(?,?)", [id, label_id]);
1292                 }
1293
1294         } catch (e) {
1295                 exception_error("label_local_add_article", e);
1296         }
1297 }
1298
1299 function get_local_feed_title(id) {
1300         try {
1301
1302                 var feed_title = "Unknown feed: " + id;
1303
1304                 if (id > 0) {
1305                         var rs = db.execute("SELECT title FROM feeds WHERE id = ?", [id]);
1306
1307                         if (rs.isValidRow()) {
1308                                 feed_title = rs.field(0);
1309                         }
1310
1311                         rs.close();
1312                 } else if (id == -1) {
1313                         feed_title = __("Starred articles");
1314                 } else if (id == -4) {
1315                         feed_title = __("All articles");
1316                 } else if (id < -10) {
1317
1318                         var label_id = -11 - id;
1319
1320                         var rs = db.execute("SELECT caption FROM labels WHERE id = ?", [label_id]);
1321
1322                         if (rs.isValidRow()) {
1323                                 feed_title = rs.field(0);
1324                         }
1325
1326                         rs.close();
1327                 }
1328
1329                 return feed_title;
1330
1331         } catch (e) {
1332                 exception_error("get_local_feed_title", e);
1333         }
1334 }
1335
1336 function format_article_labels(labels, id) {
1337         try {
1338
1339                 var labels_str = "";
1340
1341                 if (!labels) return "";
1342
1343                 for (var i = 0; i < labels.length; i++) {
1344                         var l = labels[i];
1345
1346                         labels_str += "<span class='hlLabelRef' "+
1347                                 "style='color : "+l[2]+"; background-color : "+l[3]+"'>"+l[1]+"</span>";
1348                 }
1349
1350                 return labels_str;
1351
1352         } catch (e) {
1353                 exception_error("format_article_labels", e);
1354         }
1355 }
1356
1357 function init_local_sync_data() {
1358         try {
1359
1360                 if (!db) return;
1361
1362                 var rs = db.execute("SELECT COUNT(*) FROM syncdata WHERE key = 'last_online'");
1363                 var has_last_online = 0;
1364
1365                 if (rs.isValidRow()) {
1366                         has_last_online = rs.field(0);
1367                 }
1368
1369                 rs.close();
1370
1371                 if (!has_last_online) {
1372                         db.execute("INSERT INTO syncdata (key, value) VALUES ('last_online', '')");
1373                 }
1374
1375         } catch (e) {
1376                 exception_error("init_local_sync_data", e);
1377
1378         }
1379 }
1380
1381 function has_local_sync_data() {
1382         try {
1383
1384                 var rs = db.execute("SELECT id FROM articles "+
1385                         "WHERE modified > (SELECT value FROM syncdata WHERE key = 'last_online') "+
1386                         "LIMIT 1");
1387
1388                 var tmp = 0;
1389
1390                 if (rs.isValidRow()) {
1391                         tmp = rs.field(0);
1392                 }
1393
1394                 rs.close();
1395
1396                 return tmp != 0;
1397
1398         } catch (e) {
1399                 exception_error("has_local_sync_data", e);
1400         }
1401 }
1402
1403 function prepare_local_sync_data() {
1404         try {
1405                 var rs = db.execute("SELECT value FROM syncdata WHERE key = 'last_online'");
1406
1407                 var last_online = "";
1408
1409                 if (rs.isValidRow()) {
1410                         last_online = rs.field(0);
1411                 }
1412
1413                 rs.close();
1414
1415                 var rs = db.execute("SELECT id,unread,marked FROM articles "+
1416                         "WHERE modified > ? LIMIT 200", [last_online]);
1417
1418                 var tmp = last_online + ";";
1419
1420                 var entries = 0;
1421
1422                 while (rs.isValidRow()) {
1423                         var e = new Array();
1424
1425                         tmp = tmp + rs.field(0) + "," + rs.field(1) + "," + rs.field(2) + ";";
1426                         entries++;
1427
1428                         rs.next();
1429                 }
1430
1431                 rs.close();
1432
1433                 if (entries > 0) {
1434                         return tmp;
1435                 } else {
1436                         return '';
1437                 }
1438
1439         } catch (e) {
1440                 exception_error("prepare_local_sync_data", e);
1441         }
1442 }
1443
1444 function update_local_sync_data() {
1445         try {
1446                 if (db && !offline_mode) {
1447
1448                         var rs = db.execute("SELECT id FROM articles "+
1449                                 "WHERE modified > (SELECT value FROM syncdata WHERE "+
1450                                         "key = 'last_online') LIMIT 1")
1451
1452                         var f_id = 0;
1453
1454                         if (rs.isValidRow()) {
1455                                 f_id = rs.field(0);
1456                         }
1457
1458                         rs.close();
1459
1460                         /* no pending articles to sync */
1461
1462                         if (f_id == 0) {
1463                                 db.execute("UPDATE syncdata SET value = DATETIME('NOW', 'localtime') "+
1464                                         "WHERE key = 'last_online'");
1465                         }
1466
1467                 }
1468         } catch (e) {
1469                 exception_error("update_local_sync_data", e);
1470         }
1471 }
1472
1473 function catchup_local_feed(id, is_cat) {
1474         try {
1475                 if (!db) return;
1476
1477                 if (!is_cat) {
1478                         if (id >= 0) {
1479                                 db.execute("UPDATE articles SET unread = 0 WHERE feed_id = ?", [id]);
1480                         } else if (id == -1) {
1481                                 db.execute("UPDATE articles SET unread = 0 WHERE marked = 1");
1482                         } else if (id == -4) {
1483                                 db.execute("UPDATE articles SET unread = 0");
1484                         } else if (id < -10) {
1485                                 var label_id = -11-id;
1486
1487                                 db.execute("UPDATE articles SET unread = 0 WHERE "+
1488                                         "(SELECT COUNT(*) FROM article_labels WHERE "+
1489                                         "article_labels.id = articles.id AND label_id = ?) > 0", [label_id]);
1490                         }
1491                 }
1492
1493                 update_local_feedlist_counters();
1494
1495         } catch (e) {
1496                 exception_error("catchup_local_feed", e);
1497         }
1498 }
1499
1500 function toggleOfflineModeInfo() {
1501         try {
1502                 var e = $('offlineModeDrop');
1503                 var p = $('offlineModePic');
1504
1505                 if (Element.visible(e)) {
1506                         Element.hide(e);
1507                 } else {
1508                         Element.show(e);
1509                 }
1510
1511         } catch (e) {
1512                 exception_error("toggleOfflineModeInfo", e);
1513         }
1514 }
1515
1516 function offlineDownloadStart() {
1517         try {
1518                 if (db && !sync_in_progress && getInitParam("offline_enabled") == "1") {
1519                         window.setTimeout("update_offline_data(0)", 100);
1520                 }
1521         } catch (e) {
1522                 exception_error("offlineDownloadStart", e);
1523         }
1524 }
1525
1526 function offlineClearData() {
1527         try {
1528                 if (db) {
1529
1530                         if (confirm(__("Remove offline data?"))) {
1531
1532                                 notify_progress("Removing offline data...");
1533
1534                                 db.execute("DELETE FROM articles");
1535                                 db.execute("DELETE FROM article_labels");
1536                                 db.execute("DELETE FROM labels");
1537                                 db.execute("DELETE FROM feeds");
1538
1539                                 notify_info("Offline data removed");
1540                         }
1541                 }
1542         } catch (e) {
1543                 exception_error("offlineClearData", e);
1544         }
1545 }