offline.js

   1 var SCHEMA_VERSION = 5;
   2
   3 var offline_mode = false;
   4 var store = false;
   5 var localServer = false;
   6 var db = false;
   7
   8 function view_offline(id, feed_id) {
   9         try {
  10
  11                 enableHotkeys();
  12                 showArticleInHeadlines(id);
  13
  14                 db.execute("UPDATE articles SET unread = 0 WHERE id = ?", [id]);
  15
  16                 var rs = db.execute("SELECT * FROM articles WHERE id = ?", [id]);
  17
  18                 if (rs.isValidRow()) {
  19
  20                         var tmp = "<div class=\"postReply\">";
  21
  22                         tmp += "<div class=\"postHeader\" onmouseover=\"enable_resize(true)\" "+
  23                                 "onmouseout=\"enable_resize(false)\">";
  24
  25                         tmp += "<div class=\"postDate\">"+rs.fieldByName("updated")+"</div>";
  26
  27                         if (rs.fieldByName("link") != "") {
  28                                 tmp += "<div clear='both'><a target=\"_blank\" "+
  29                                         "href=\"" + rs.fieldByName("link") + "\">" +
  30                                         rs.fieldByName("title") + "</a></div>";
  31                         } else {
  32                                 tmp += "<div clear='both'>" + rs.fieldByName("title") + "</div>";
  33                         }
  34
  35 /*                      tmp += "<div style='float : right'> "+
  36                                 "<img src='images/tag.png' class='tagsPic' alt='Tags' title='Tags'>";
  37                         tmp += rs.fieldByName("tags");
  38                         tmp += "</div>"; */
  39
  40                         tmp += "<div clear='both'>"+
  41                                 "<a target=\"_blank\" "+
  42                                         "href=\"" + rs.fieldByName("comments") + "\">" +
  43                                         __("comments") + "</a></div>";
  44
  45                         tmp += "</div>";
  46
  47                         tmp += "<div class=\"postContent\">"
  48                         tmp += rs.fieldByName("content");
  49                         tmp += "</div>";
  50
  51                         tmp += "</div>";
  52
  53                         render_article(tmp);
  54                         update_local_feedlist_counters();
  55                 }
  56
  57                 rs.close();
  58
  59                 return false;
  60
  61         } catch (e) {
  62                 exception_error("view_offline", e);
  63         }
  64 }
  65
  66 function viewfeed_offline(feed_id, subop, is_cat, subop_param, skip_history, offset) {
  67         try {
  68                 notify('');
  69
  70                 if (!offset) offset = 0;
  71
  72                 if (offset > 0) {
  73                         _feed_cur_page = parseInt(offset);
  74                         if (_infscroll_request_sent) {
  75                                 return;
  76                         }
  77                 } else {
  78                         _feed_cur_page = 0;
  79                         _infscroll_disable = 0;
  80                 }
  81
  82                 if (getActiveFeedId() != feed_id) {
  83                         _feed_cur_page = 0;
  84                         active_post_id = 0;
  85                         _infscroll_disable = 0;
  86                 }
  87
  88                 loading_set_progress(100);
  89
  90                 clean_feed_selections();
  91
  92                 setActiveFeedId(feed_id, is_cat);
  93
  94                 if (!is_cat) {
  95                         var feedr = document.getElementById("FEEDR-" + feed_id);
  96                         if (feedr && !feedr.className.match("Selected")) {
  97                                 feedr.className = feedr.className + "Selected";
  98                         }
  99                 } else {
 100                         var feedr = document.getElementById("FCAT-" + feed_id);
 101                         if (feedr && !feedr.className.match("Selected")) {
 102                                 feedr.className = feedr.className + "Selected";
 103                         }
 104                 }
 105
 106                 disableContainerChildren("headlinesToolbar", false);
 107                 Form.enable("main_toolbar_form");
 108
 109                 var f = document.getElementById("headlines-frame");
 110                 try {
 111                         if (reply.offset == 0) {
 112                                 debug("resetting headlines scrollTop");
 113                                 f.scrollTop = 0;
 114                         }
 115                 } catch (e) { };
 116
 117
 118                 var tmp = "";
 119
 120                 rs = db.execute("SELECT title FROM feeds WHERE id = ?", [feed_id]);
 121
 122                 if (rs.isValidRow() || feed_id == -1 || feed_id == -4) {
 123
 124                         feed_title = rs.field(0);
 125
 126                         if (feed_id == -1) {
 127                                 feed_title = __("Starred articles");
 128                         }
 129
 130                         if (feed_id == -4) {
 131                                 feed_title = __("All articles");
 132                         }
 133
 134                         if (offset == 0) {
 135                                 tmp += "<div id=\"headlinesContainer\">";
 136
 137                                 tmp += "<div class=\"headlinesSubToolbar\">";
 138                                 tmp += "<div id=\"subtoolbar_ftitle\">";
 139                                 tmp += feed_title;
 140                                 tmp += "</div>";
 141
 142                                 var sel_all_link;
 143                                 var sel_unread_link;
 144                                 var sel_none_link;
 145                                 var sel_inv_link;
 146
 147                                 if (document.getElementById("content-frame")) {
 148                                         sel_all_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, '', true)";
 149                                         sel_unread_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', true, 'Unread', true)";
 150                                         sel_none_link = "javascript:selectTableRowsByIdPrefix('headlinesList', 'RROW-', 'RCHK-', false)";
 151                                         sel_inv_link = "javascript:invertHeadlineSelection()";
 152                                 } else {
 153                                         sel_all_link = "javascript:cdmSelectArticles('all')";
 154                                         sel_unread_link = "javascript:cdmSelectArticles('unread')";
 155                                         sel_none_link = "javascript:cdmSelectArticles('none')";
 156                                         sel_inv_link = "javascript:invertHeadlineSelection()";
 157                                 }
 158
 159                                 tmp += __('Select:')+
 160                                         " <a href=\""+sel_all_link+"\">"+__('All')+"</a>, "+
 161                                         "<a href=\""+sel_unread_link+"\">"+__('Unread')+"</a>, "+
 162                                         "<a href=\""+sel_inv_link+"\">"+__('Invert')+"</a>, "+
 163                                         "<a href=\""+sel_none_link+"\">"+__('None')+"</a>";
 164
 165                                 tmp += "&nbsp;&nbsp;";
 166
 167                                 tmp += "</div>";
 168
 169                                 tmp += "<div id=\"headlinesInnerContainer\" onscroll=\"headlines_scroll_handler()\">";
 170                                 if (document.getElementById("content-frame")) {
 171                                         tmp += "<table class=\"headlinesList\" id=\"headlinesList\" cellspacing=\"0\">";
 172                                 }
 173
 174                         }
 175
 176                         var limit = 30;
 177
 178                         var toolbar_form = document.forms["main_toolbar_form"];
 179
 180                         var limit = toolbar_form.limit[toolbar_form.limit.selectedIndex].value;
 181                         var view_mode = toolbar_form.view_mode[toolbar_form.view_mode.selectedIndex].value;
 182
 183                         var limit_qpart = "";
 184                         var strategy_qpart = "";
 185                         var mode_qpart = "";
 186                         var offset_qpart = "";
 187
 188                         if (limit != 0) {
 189                                 limit_qpart = "LIMIT " + limit;
 190                         }
 191
 192                         if (view_mode == "all_articles") {
 193                                 mode_qpart = "1";
 194                         } else if (view_mode == "adaptive") {
 195                                 if (get_local_feed_unread(feed_id) > 0) {
 196                                         mode_qpart = "unread = 1";
 197                                 } else {
 198                                         mode_qpart = "1";
 199                                 }
 200                         } else if (view_mode == "marked") {
 201                                 mode_qpart = "marked = 1";
 202                         } else if (view_mode == "unread") {
 203                                 mode_qpart = "unread = 1";
 204                         } else {
 205                                 mode_qpart = "1";
 206                         }
 207
 208                         if (feed_id > 0) {
 209                                 strategy_qpart = "feed_id = " + feed_id;
 210                         } else if (feed_id == -1) {
 211                                 strategy_qpart = "marked = 1";
 212                         } else if (feed_id == -4) {
 213                                 strategy_qpart = "1";
 214                         }
 215
 216                         if (offset > 0) {
 217                                 offset_qpart = "OFFSET " + (offset*30);
 218                         } else {
 219                                 offset_qpart = "";
 220                         }
 221
 222                         var query = "SELECT *,feeds.title AS feed_title "+
 223                                 "FROM articles,feeds WHERE " +
 224                                 "feed_id = feeds.id AND " +
 225                                 strategy_qpart +
 226                                 " AND " + mode_qpart +
 227                                 " ORDER BY updated DESC "+
 228                                 limit_qpart + " " +
 229                                 offset_qpart;
 230
 231                         var rs = db.execute(query);
 232
 233                         var line_num = offset*30;
 234
 235                         var real_feed_id = feed_id;
 236
 237                         while (rs.isValidRow()) {
 238
 239                                 var id = rs.fieldByName("id");
 240                                 var feed_id = rs.fieldByName("feed_id");
 241
 242                                 var entry_feed_title = false;
 243
 244                                 if (real_feed_id < 0) {
 245                                         entry_feed_title = rs.fieldByName("feed_title");
 246                                 }
 247
 248                                 var marked_pic;
 249
 250                                 var row_class = (line_num % 2) ? "even" : "odd";
 251
 252                                 if (rs.fieldByName("unread") == "1") {
 253                                         row_class += "Unread";
 254                                 }
 255
 256                                 if (rs.fieldByName("marked") == "1") {
 257                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 258                                                 "src=\"images/mark_set.png\" class=\"markedPic\""+
 259                                                 "alt=\"Unstar article\" onclick='javascript:tMark("+id+")'>";
 260                                 } else {
 261                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 262                                                 "src=\"images/mark_unset.png\" class=\"markedPic\""+
 263                                                 "alt=\"Star article\" onclick='javascript:tMark("+id+")'>";
 264                                 }
 265
 266                                 var mouseover_attrs = "onmouseover='postMouseIn($id)' "+
 267                                         "onmouseout='postMouseOut($id)'";
 268
 269                                 var content_preview = truncate_string(strip_tags(rs.fieldByName("content")),
 270                                                 100);
 271
 272                                 if (document.getElementById("content-frame")) {
 273
 274                                         tmp += "<tr class='"+row_class+"' id='RROW-"+id+"' "+mouseover_attrs+">";
 275
 276                                         tmp += "<td class='hlUpdPic'> </td>";
 277
 278                                         tmp += "<td class='hlSelectRow'>"+
 279                                                 "<input type=\"checkbox\" onclick=\"tSR(this)\" id=\"RCHK-"+id+"\"></td>";
 280
 281                                         tmp += "<td class='hlMarkedPic'>"+marked_pic+"</td>";
 282
 283                                         tmp += "<td onclick='view("+id+","+feed_id+")' "+
 284                                                 "class='hlContent' valign='middle'>";
 285
 286                                         tmp += "<a target=\"_blank\" id=\"RTITLE-"+id+"\" href=\"" +
 287                                                 rs.fieldByName("link") + "\"" +
 288                                                 "onclick=\"return view("+id+","+feed_id+");\">"+
 289                                                 rs.fieldByName("title");
 290
 291                                         tmp += "<span class=\"contentPreview\"> - "+content_preview+"</span>";
 292
 293                                         tmp += "</a>";
 294
 295                                         if (entry_feed_title) {
 296                                                 tmp += " <span class=\"hlFeed\">"+
 297                                                         "(<a href='javascript:viewfeed("+feed_id+
 298                                                         ")'>"+entry_feed_title+"</a>)</span>";
 299                                         }
 300
 301                                         tmp += "</td>";
 302
 303                                         tmp += "<td class=\"hlUpdated\" onclick='view("+id+","+feed_id+")'>"+
 304                                                 "<nobr>"+rs.fieldByName("updated").substring(0,16)+
 305                                                 "</nobr></td>";
 306
 307                                         tmp += "</tr>";
 308                                 } else {
 309
 310                                         var add_class = "";
 311
 312                                         if (rs.fieldByName("unread") == "1") {
 313                                                 add_class = "Unread";
 314                                         }
 315
 316                                         tmp += "<div class=\"cdmArticle"+add_class+"\" id=\"RROW-"+id+"\" "+
 317                                                 mouseover_attrs+"'>";
 318
 319                                         feed_icon_img = "<img class=\"tinyFeedIcon\" src=\""+
 320                                                 getInitParam("icons_url")+"/"+feed_id+".ico\" alt=\"\">";
 321                                         cdm_feed_icon = "<span style=\"cursor : pointer\" "+
 322                                                 "onclick=\"viewfeed("+feed_id+")\">"+feed_icon_img+"</span>";
 323
 324                                         tmp += "<div class=\"cdmHeader\">";
 325                                         tmp += "<div class=\"articleUpdated\">"+
 326                                                 rs.fieldByName("updated").substring(0,16)+
 327                                                 " "+cdm_feed_icon+"</div>";
 328
 329                                         tmp += "<span id=\"RTITLE-"+id+"\" class=\"titleWrap\">"+
 330                                                 "<a class=\"title\" onclick=\"javascript:toggleUnread("+id+", 0)\""+
 331                                                 "target=\"_blank\" href=\""+rs.fieldByName("link")+
 332                                                 "\">"+rs.fieldByName("title")+"</a>";
 333
 334                                         if (entry_feed_title) {
 335                                                 tmp += "&nbsp;(<a href='javascript:viewfeed("+feed_id+
 336                                                         ")'>"+entry_feed_title+"</a>)";
 337                                         }
 338
 339                                         tmp += "</span></div>";
 340
 341                                         tmp += "<div class=\"cdmContent\" onclick=\"cdmClicked("+id+")\""+
 342                                                 "id=\"CICD-"+id+"\">";
 343                                         tmp += rs.fieldByName("content");
 344                                         tmp += "<br clear='both'>"
 345                                         tmp += "</div>";
 346
 347                                         tmp += "<div class=\"cdmFooter\"><span class='s0'>";
 348                                         tmp += __("Select:")+
 349                                                 " <input type=\"checkbox\" "+
 350                                                 "onclick=\"toggleSelectRowById(this, 'RROW-"+id+"')\" "+
 351                                                 "class=\"feedCheckBox\" id=\"RCHK-"+id+"\">";
 352
 353                                         tmp += "</span><span class='s1'>"+marked_pic+"</span> ";
 354
 355 /*                                      tmp += "<span class='s1'>"+
 356                                                 "<img class='tagsPic' src='images/tag.png' alt='Tags' title='Tags'>"+
 357                                                 "<span id=\"ATSTR-"+id+"\">"+rs.fieldByName("tags")+"</span>"+
 358                                                 "</span>"; */
 359
 360                                         tmp += "<span class='s2'>Toggle: <a class=\"cdmToggleLink\""+
 361                                                 "href=\"javascript:toggleUnread("+id+")\">"+
 362                                                 "Unread</a></span>";
 363                                         tmp += "</div>";
 364
 365                                         tmp += "</div>";
 366                                 }
 367
 368                                 rs.next();
 369                                 line_num++;
 370                         }
 371
 372                         if (line_num - offset*30 < 30) {
 373                                 _infscroll_disable = 1;
 374                         }
 375
 376                         rs.close();
 377
 378                         if (offset == 0) {
 379                                 tmp += "</table>";
 380
 381                                 if (line_num - offset*30 == 0) {
 382                                         tmp += "<div class='whiteBox'>" +
 383                                                 __("No articles found to display.") +
 384                                                 "</div>";
 385                                 }
 386                                 tmp += "</div></div>";
 387                         }
 388
 389                         if (offset == 0) {
 390                                 var container = document.getElementById("headlines-frame");
 391                                 container.innerHTML = tmp;
 392                         } else {
 393                                 var ids = getSelectedArticleIds2();
 394
 395                                 var container = document.getElementById("headlinesList");
 396                                 container.innerHTML = container.innerHTML + tmp;
 397
 398                                 for (var i = 0; i < ids.length; i++) {
 399                                         markHeadline(ids[i]);
 400                                 }
 401                         }
 402                 }
 403
 404                 remove_splash();
 405
 406                 _infscroll_request_sent = 0;
 407
 408         } catch (e) {
 409                 exception_error("viewfeed_offline", e);
 410         }
 411 }
 412
 413 function render_offline_feedlist() {
 414         try {
 415                 var cats_enabled = 1;
 416
 417                 var tmp = "<ul class=\"feedList\" id=\"feedList\">";
 418
 419                 var unread = get_local_feed_unread(-4);
 420
 421                 global_unread = unread;
 422                 updateTitle();
 423
 424                 if (cats_enabled) {
 425                         tmp += printCategoryHeader(-1, getCookie("ttrss_vf_vclps"), false);
 426                 }
 427
 428                 tmp += printFeedEntry(-4, __("All articles"), "feed", unread,
 429                         "images/tag.png");
 430
 431                 var unread = get_local_feed_unread(-1);
 432
 433                 tmp += printFeedEntry(-1, __("Starred articles"), "feed", unread,
 434                         "images/mark_set.png");
 435
 436                 if (cats_enabled) {
 437                         tmp += "</ul></li>";
 438                 } else {
 439                         tmp += "<li><hr/></li>";
 440                 }
 441
 442 /*              var rs = db.execute("SELECT feeds.id,feeds.title,has_icon,COUNT(articles.id) "+
 443                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 444                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 445                         "ORDER BY feeds.title"); */
 446
 447                 var order_by = "feeds.title";
 448
 449                 if (cats_enabled) order_by = "categories.title," + order_by;
 450
 451                 var rs = db.execute("SELECT "+
 452                         "feeds.id,feeds.title,has_icon,cat_id,collapsed "+
 453                         "FROM feeds,categories WHERE cat_id = categories.id "+
 454                         "ORDER BY "+order_by);
 455
 456                 var tmp_cat_id = -1;
 457
 458                 while (rs.isValidRow()) {
 459
 460                         var id = rs.field(0);
 461                         var title = rs.field(1);
 462                         var has_icon = rs.field(2);
 463                         var unread = get_local_feed_unread(id);
 464                         var cat_id = rs.field(3);
 465                         var cat_hidden = rs.field(4);
 466
 467                         if (cat_id != tmp_cat_id && cats_enabled) {
 468                                 if (tmp_cat_id != -1) {
 469                                         tmp += "</ul></li>";
 470                                 }
 471                                 tmp += printCategoryHeader(cat_id, cat_hidden, false);
 472                                 tmp_cat_id = cat_id;
 473                         }
 474
 475                         var icon = "";
 476
 477                         if (has_icon) {
 478                                 icon = "icons/" + id + ".ico";
 479                         }
 480
 481                         var feed_icon = "";
 482
 483                         var row_class = "feed";
 484
 485                         if (unread > 0) {
 486                                 row_class += "Unread";
 487                                 fctr_class = "feedCtrHasUnread";
 488                         } else {
 489                                 fctr_class = "feedCtrNoUnread";
 490                         }
 491
 492                         tmp += printFeedEntry(id, title, "feed", unread, icon);
 493
 494                         rs.next();
 495                 }
 496
 497                 rs.close();
 498
 499                 tmp += "</ul>";
 500
 501                 render_feedlist(tmp);
 502         } catch (e) {
 503                 exception_error("render_offline_feedlist", e);
 504         }
 505 }
 506
 507 function init_offline() {
 508         try {
 509                 offline_mode = true;
 510
 511                 Element.hide("dispSwitchPrompt");
 512                 Element.hide("feedBrowserPrompt");
 513
 514                 Element.hide("topLinksOnline");
 515                 Element.show("topLinksOffline");
 516
 517                 var tb_form = document.getElementById("main_toolbar_form");
 518                 Element.hide(tb_form.update);
 519
 520                 var chooser = document.getElementById("quickMenuChooser");
 521                 chooser.disabled = true;
 522
 523                 var rs = db.execute("SELECT key, value FROM init_params");
 524
 525                 while (rs.isValidRow()) {
 526                         init_params[rs.field(0)] = rs.field(1);
 527                         rs.next();
 528                 }
 529
 530                 rs.close();
 531
 532                 var rs = db.execute("SELECT COUNT(*) FROM feeds");
 533
 534                 var num_feeds = 0;
 535
 536                 if (rs.isValidRow()) {
 537                         num_feeds = rs.field(0);
 538                 }
 539
 540                 rs.close();
 541
 542                 if (num_feeds == 0) {
 543                         remove_splash();
 544                         return fatalError(0,
 545                                 __("Data for offline browsing has not been downloaded yet."));
 546                 }
 547
 548                 render_offline_feedlist();
 549                 init_second_stage();
 550                 window.setTimeout("viewfeed(-4)", 50);
 551
 552         } catch (e) {
 553                 exception_error("init_offline", e);
 554         }
 555 }
 556
 557 function offline_download_parse(stage, transport) {
 558         try {
 559                 if (transport.responseXML) {
 560
 561                         if (stage == 0) {
 562
 563                                 var feeds = transport.responseXML.getElementsByTagName("feed");
 564
 565                                 if (feeds.length > 0) {
 566                                         db.execute("DELETE FROM feeds");
 567                                 }
 568
 569                                 for (var i = 0; i < feeds.length; i++) {
 570                                         var id = feeds[i].getAttribute("id");
 571                                         var has_icon = feeds[i].getAttribute("has_icon");
 572                                         var title = feeds[i].firstChild.nodeValue;
 573                                         var cat_id = feeds[i].getAttribute("cat_id");
 574
 575                                         db.execute("INSERT INTO feeds (id,title,has_icon,cat_id)"+
 576                                                 "VALUES (?,?,?,?)",
 577                                                 [id, title, has_icon, cat_id]);
 578                                 }
 579
 580                                 var cats = transport.responseXML.getElementsByTagName("category");
 581
 582                                 if (feeds.length > 0) {
 583                                         db.execute("DELETE FROM categories");
 584                                 }
 585
 586                                 for (var i = 0; i < cats.length; i++) {
 587                                         var id = cats[i].getAttribute("id");
 588                                         var collapsed = cats[i].getAttribute("collapsed");
 589                                         var title = cats[i].firstChild.nodeValue;
 590
 591                                         db.execute("INSERT INTO categories (id,title,collapsed)"+
 592                                                 "VALUES (?,?,?)",
 593                                                 [id, title, collapsed]);
 594                                 }
 595
 596                                 window.setTimeout("update_offline_data("+(stage+1)+")", 10*1000);
 597                         } else {
 598
 599                                 var articles = transport.responseXML.getElementsByTagName("article");
 600
 601                                 var limit = transport.responseXML.getElementsByTagName("limit")[0];
 602
 603                                 if (limit) {
 604                                         limit = limit.getAttribute("value");
 605                                 } else {
 606                                         limit = 0;
 607                                 }
 608
 609                                 var articles_found = 0;
 610
 611                                 for (var i = 0; i < articles.length; i++) {
 612                                         var a = eval("("+articles[i].firstChild.nodeValue+")");
 613                                         articles_found++;
 614                                         if (a) {
 615
 616                                                 var date = new Date();
 617                                                 var ts = Math.round(date.getTime() / 1000);
 618
 619                                                 db.execute("DELETE FROM articles WHERE id = ?", [a.id]);
 620                                                 db.execute("INSERT INTO articles "+
 621                                                 "(id, feed_id, title, link, guid, updated, content, "+
 622                                                         "unread, marked, tags, added, comments) "+
 623                                                 "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
 624                                                         [a.id, a.feed_id, a.title, a.link, a.guid, a.updated,
 625                                                                 a.content, a.unread, a.marked, a.tags, ts,
 626                                                                 a.comments]);
 627
 628                                         }
 629                                 }
 630
 631                                 debug("downloaded articles: " + articles_found + " limit: " + limit);
 632
 633                                 if (articles_found >= limit) {
 634                                         window.setTimeout("update_offline_data("+(stage+1)+")", 10*1000);
 635                                         debug("update_offline_data: done " + stage);
 636                                 } else {
 637                                         window.setTimeout("update_offline_data(0)", 1800*1000);
 638                                         debug("update_offline_data: finished");
 639
 640                                         var date = new Date();
 641                                         var ts = Math.round(date.getTime() / 1000);
 642
 643                                         db.execute("DELETE FROM articles WHERE added < ? - 2592000", [ts]);
 644
 645                                 }
 646                         }
 647
 648 //                      notify('');
 649
 650                 }
 651         } catch (e) {
 652                 exception_error("offline_download_parse", e);
 653         }
 654 }
 655
 656 function update_offline_data(stage) {
 657         try {
 658
 659                 if (!stage) stage = 0;
 660                 if (offline_mode) return;
 661
 662                 debug("update_offline_data: stage " + stage);
 663
 664 //              notify_progress("Updating offline data... (" + stage +")", true);
 665
 666                 var query = "backend.php?op=rpc&subop=download&stage=" + stage;
 667
 668                 var rs = db.execute("SELECT MAX(id), MIN(id) FROM articles");
 669
 670                 if (rs.isValidRow() && rs.field(0)) {
 671                         var offline_dl_max_id = rs.field(0);
 672                         var offline_dl_min_id = rs.field(1);
 673
 674                         query = query + "&cidt=" + offline_dl_max_id;
 675                         query = query + "&cidb=" + offline_dl_min_id;
 676                 }
 677
 678                 rs.close();
 679
 680                 new Ajax.Request(query, {
 681                         onComplete: function(transport) {
 682                                 offline_download_parse(stage, transport);
 683                         } });
 684
 685         } catch (e) {
 686                 exception_error("initiate_offline_download", e);
 687         }
 688 }
 689
 690 function set_feedlist_counter(id, ctr, is_cat) {
 691         try {
 692
 693                 var feedctr = document.getElementById("FEEDCTR-" + id);
 694                 var feedu = document.getElementById("FEEDU-" + id);
 695                 var feedr = document.getElementById("FEEDR-" + id);
 696
 697                 if (is_cat) {
 698                         var catctr = document.getElementById("FCATCTR-" + id);
 699                         if (catctr) {
 700                                 catctr.innerHTML = "(" + ctr + ")";
 701                                 if (ctr > 0) {
 702                                         catctr.className = "catCtrHasUnread";
 703                                 } else {
 704                                         catctr.className = "catCtrNoUnread";
 705                                 }
 706                         }
 707                 } else if (feedctr && feedu && feedr) {
 708
 709                         var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 710
 711                         feedu.innerHTML = ctr;
 712
 713                         if (ctr > 0) {
 714                                 feedctr.className = "feedCtrHasUnread";
 715                                 if (!feedr.className.match("Unread")) {
 716                                         var is_selected = feedr.className.match("Selected");
 717
 718                                         feedr.className = feedr.className.replace("Selected", "");
 719                                         feedr.className = feedr.className.replace("Unread", "");
 720
 721                                         feedr.className = feedr.className + "Unread";
 722
 723                                         if (is_selected) {
 724                                                 feedr.className = feedr.className + "Selected";
 725                                         }
 726
 727                                 }
 728
 729                                 if (row_needs_hl) {
 730                                         new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 731                                                 queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 732                                 }
 733                         } else {
 734                                 feedctr.className = "feedCtrNoUnread";
 735                                 feedr.className = feedr.className.replace("Unread", "");
 736                         }
 737                 }
 738
 739         } catch (e) {
 740                 exception_error("set_feedlist_counter", e);
 741         }
 742 }
 743
 744 function update_local_feedlist_counters() {
 745         try {
 746                 if (!offline_mode) return;
 747
 748 /*              var rs = db.execute("SELECT feeds.id,COUNT(articles.id) "+
 749                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 750                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 751                         "ORDER BY feeds.title"); */
 752
 753                 var rs = db.execute("SELECT id FROM feeds "+
 754                         "ORDER BY title");
 755
 756                 while (rs.isValidRow()) {
 757                         var id = rs.field(0);
 758                         var ctr = get_local_feed_unread(id);
 759                         set_feedlist_counter(id, ctr, false);
 760                         rs.next();
 761                 }
 762
 763                 rs.close();
 764
 765                 var rs = db.execute("SELECT cat_id,SUM(unread) "+
 766                         "FROM articles, feeds WHERE feeds.id = feed_id GROUP BY cat_id");
 767
 768                 while (rs.isValidRow()) {
 769                         var id = rs.field(0);
 770                         var ctr = rs.field(1);
 771                         set_feedlist_counter(id, ctr, true);
 772                         rs.next();
 773                 }
 774
 775                 rs.close();
 776
 777                 set_feedlist_counter(-4, get_local_feed_unread(-4));
 778                 set_feedlist_counter(-1, get_local_feed_unread(-1));
 779
 780                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 781
 782                 global_unread = get_local_feed_unread(-4);
 783                 updateTitle();
 784
 785         } catch (e) {
 786                 exception_error("update_local_feedlist_counters", e);
 787         }
 788 }
 789
 790 function get_local_feed_unread(id) {
 791         try {
 792                 var rs;
 793
 794                 if (id == -4) {
 795                         rs = db.execute("SELECT SUM(unread) FROM articles");
 796                 } else if (id == -1) {
 797                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE marked = 1");
 798                 } else {
 799                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE feed_id = ?", [id]);
 800                 }
 801
 802                 var a = false;
 803
 804                 if (rs.isValidRow()) {
 805                         a = rs.field(0);
 806                 } else {
 807                         a = 0;
 808                 }
 809
 810                 rs.close();
 811
 812                 return a;
 813
 814         } catch (e) {
 815                 exception_error("get_local_feed_unread", e);
 816         }
 817 }
 818
 819 function init_gears() {
 820         try {
 821
 822                 if (window.google && google.gears) {
 823                         localServer = google.gears.factory.create("beta.localserver");
 824                         store = localServer.createManagedStore("tt-rss");
 825                         db = google.gears.factory.create('beta.database');
 826                         db.open('tt-rss');
 827
 828                         db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
 829
 830                         var rs = db.execute("SELECT schema_version FROM version");
 831
 832                         var version = "";
 833
 834                         if (rs.isValidRow()) {
 835                                 version = rs.field(0);
 836                         }
 837
 838                         rs.close();
 839
 840                         if (version != SCHEMA_VERSION) {
 841                                 db.execute("DROP TABLE IF EXISTS init_params");
 842                                 db.execute("DROP TABLE IF EXISTS cache");
 843                                 db.execute("DROP TABLE IF EXISTS feeds");
 844                                 db.execute("DROP TABLE IF EXISTS categories");
 845                                 db.execute("DROP TABLE IF EXISTS articles");
 846                                 db.execute("DROP TABLE IF EXISTS version");
 847                                 db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
 848                                 db.execute("INSERT INTO version (schema_version) VALUES (?)",
 849                                         [SCHEMA_VERSION]);
 850                         }
 851
 852                         db.execute("CREATE TABLE IF NOT EXISTS init_params (key text, value text)");
 853
 854                         db.execute("CREATE TABLE IF NOT EXISTS cache (id text, article text, param text, added text)");
 855                         db.execute("CREATE TABLE IF NOT EXISTS feeds (id integer, title text, has_icon integer, cat_id integer)");
 856                         db.execute("CREATE TABLE IF NOT EXISTS categories (id integer, title text, collapsed integer)");
 857                         db.execute("CREATE TABLE IF NOT EXISTS articles (id integer, feed_id integer, title text, link text, guid text, updated text, content text, tags text, unread text, marked text, added text, comments text)");
 858
 859                         db.execute("DELETE FROM cache WHERE id LIKE 'F:%' OR id LIKE 'C:%'");
 860
 861                         Element.show("restartOfflinePic");
 862
 863                 }
 864
 865                 cache_expire();
 866
 867         } catch (e) {
 868                 exception_error("init_gears", e);
 869         }
 870 }
 871
 872 function gotoOffline() {
 873         window.location.href = "tt-rss.php?offline=1";
 874 }
 875
 876 function gotoOnline() {
 877         window.location.href = "tt-rss.php";
 878 }
 879
 880 function local_collapse_cat(id) {
 881         try {
 882                 if (db) {
 883                         db.execute("UPDATE categories SET collapsed = NOT collapsed WHERE id = ?",
 884                                 [id]);
 885                 }
 886         } catch (e) {
 887                 exception_error("local_collapse_cat", e);
 888         }
 889 }
 890
 891 function get_local_category_title(id) {
 892         try {
 893                 var rs = db.execute("SELECT title FROM categories WHERE id = ?", [id]);
 894                 var tmp = "";
 895
 896                 if (rs.isValidRow()) {
 897                         tmp = rs.field(0);
 898                 }
 899
 900                 rs.close();
 901
 902                 return tmp;
 903
 904         } catch (e) {
 905                 exception_error("get_local_category_title", e);
 906         }
 907 }
 908
 909 function get_local_category_unread(id) {
 910         try {
 911                 var rs = db.execute("SELECT SUM(unread) FROM articles, feeds "+
 912                         "WHERE feeds.id = feed_id AND cat_id = ?",
 913                         [id]);
 914
 915                 var tmp = 0;
 916
 917                 if (rs.isValidRow()) {
 918                         tmp = rs.field(0);
 919                 }
 920
 921                 rs.close();
 922
 923                 return tmp;
 924
 925         } catch (e) {
 926                 exception_error("get_local_category_unread", e);
 927         }
 928 }
 929
 930 function printCategoryHeader(cat_id, hidden, can_browse) {
 931         try {
 932                 if (hidden == undefined) hidden = false;
 933                 if (can_browse == undefined) can_browse = false;
 934
 935                         var tmp_category = get_local_category_title(cat_id);
 936                         var tmp = "";
 937
 938                         var cat_unread = get_local_category_unread(cat_id);
 939
 940                         var holder_style = "";
 941                         var ellipsis = "";
 942
 943                         if (hidden) {
 944                                 holder_style = "display:none;";
 945                                 ellipsis = "…";
 946                         }
 947
 948                         var catctr_class = (cat_unread > 0) ? "catCtrHasUnread" : "catCtrNoUnread";
 949
 950                         var browse_cat_link = "";
 951                         var inner_title_class = "catTitleNL";
 952
 953                         if (can_browse) {
 954                                 browse_cat_link = "onclick=\"javascript:viewCategory($cat_id)\"";
 955                                 inner_title_class = "catTitle";
 956                         }
 957
 958                         var cat_class = "feedCat";
 959
 960                         tmp += "<li class=\""+cat_class+"\" id=\"FCAT-"+cat_id+"\">"+
 961                                 "<img onclick=\"toggleCollapseCat("+cat_id+")\" class=\"catCollapse\""+
 962                                         " title=\""+__('Click to collapse category')+"\""+
 963                                         " src=\"images/cat-collapse.png\"><span class=\""+inner_title_class+"\" "+
 964                                         " id=\"FCATN-"+cat_id+"\" "+browse_cat_link+
 965                                 "\">"+tmp_category+"</span>";
 966
 967                         tmp += "<span id=\"FCAP-"+cat_id+"\">";
 968
 969                         tmp += " <span id=\"FCATCTR-"+cat_id+"\" "+
 970                                 "class=\""+catctr_class+"\">("+cat_unread+")</span> "+ellipsis;
 971
 972                         tmp += "</span>";
 973
 974                         tmp += "<ul class=\"feedCatList\" id=\"FCATLIST-"+cat_id+"\" "+
 975                                 "style='"+holder_style+"'>";
 976
 977                         return tmp;
 978         } catch (e) {
 979                 exception_error("printCategoryHeader", e);
 980         }
 981 }
 982