offline.js

   1 var SCHEMA_VERSION = 3;
   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 * FROM articles WHERE " +
 223                                 strategy_qpart +
 224                                 " AND " + mode_qpart +
 225                                 " ORDER BY updated DESC "+
 226                                 limit_qpart + " " +
 227                                 offset_qpart;
 228
 229                         var rs = db.execute(query);
 230
 231                         var line_num = offset*30;
 232
 233                         while (rs.isValidRow()) {
 234
 235                                 var id = rs.fieldByName("id");
 236                                 var feed_id = rs.fieldByName("feed_id");
 237
 238                                 var marked_pic;
 239
 240                                 var row_class = (line_num % 2) ? "even" : "odd";
 241
 242                                 if (rs.fieldByName("unread") == "1") {
 243                                         row_class += "Unread";
 244                                 }
 245
 246                                 if (rs.fieldByName("marked") == "1") {
 247                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 248                                                 "src=\"images/mark_set.png\" class=\"markedPic\""+
 249                                                 "alt=\"Unstar article\" onclick='javascript:tMark("+id+")'>";
 250                                 } else {
 251                                         marked_pic = "<img id=\"FMPIC-"+id+"\" "+
 252                                                 "src=\"images/mark_unset.png\" class=\"markedPic\""+
 253                                                 "alt=\"Star article\" onclick='javascript:tMark("+id+")'>";
 254                                 }
 255
 256                                 var mouseover_attrs = "onmouseover='postMouseIn($id)' "+
 257                                         "onmouseout='postMouseOut($id)'";
 258
 259                                 var content_preview = truncate_string(strip_tags(rs.fieldByName("content")),
 260                                                 100);
 261
 262                                 if (document.getElementById("content-frame")) {
 263
 264                                         tmp += "<tr class='"+row_class+"' id='RROW-"+id+"' "+mouseover_attrs+">";
 265
 266                                         tmp += "<td class='hlUpdPic'> </td>";
 267
 268                                         tmp += "<td class='hlSelectRow'>"+
 269                                                 "<input type=\"checkbox\" onclick=\"tSR(this)\" id=\"RCHK-"+id+"\"></td>";
 270
 271                                         tmp += "<td class='hlMarkedPic'>"+marked_pic+"</td>";
 272
 273                                         tmp += "<td onclick='view("+id+","+feed_id+")' "+
 274                                                 "class='hlContent' valign='middle'>";
 275
 276                                         tmp += "<a target=\"_blank\" id=\"RTITLE-$id\" href=\"" +
 277                                                 rs.fieldByName("link") + "\"" +
 278                                                 "onclick=\"return view("+id+","+feed_id+");\">"+
 279                                                 rs.fieldByName("title");
 280
 281                                         tmp += "<span class=\"contentPreview\"> - "+content_preview+"</span>";
 282
 283                                         tmp += "</a>";
 284
 285                                         tmp += "</td>";
 286
 287                                         tmp += "<td class=\"hlUpdated\" onclick='view("+id+","+feed_id+")'>"+
 288                                                 "<nobr>"+rs.fieldByName("updated").substring(0,16)+"</nobr></td>";
 289
 290                                         tmp += "</tr>";
 291                                 } else {
 292
 293                                         var add_class = "";
 294
 295                                         if (rs.fieldByName("unread") == "1") {
 296                                                 add_class = "Unread";
 297                                         }
 298
 299                                         tmp += "<div class=\"cdmArticle"+add_class+"\" id=\"RROW-"+id+"\" "+
 300                                                 mouseover_attrs+"'>";
 301
 302                                         tmp += "<div class=\"cdmHeader\">";
 303                                         tmp += "<div class=\"articleUpdated\">"+
 304                                                 rs.fieldByName("updated").substring(0,16)+"</div>";
 305
 306                                         tmp += "<span id=\"RTITLE-"+id+"\" class=\"titleWrap\">"+
 307                                                 "<a class=\"title\" onclick=\"javascript:toggleUnread("+id+", 0)\""+
 308                                                 "target=\"_blank\" href=\""+rs.fieldByName("link")+
 309                                                 "\">"+rs.fieldByName("title")+"</a>";
 310                                         tmp += "</span></div>";
 311
 312                                         tmp += "<div class=\"cdmContent\" onclick=\"cdmClicked("+id+")\""+
 313                                                 "id=\"CICD-"+id+"\">";
 314                                         tmp += rs.fieldByName("content");
 315                                         tmp += "<br clear='both'>"
 316                                         tmp += "</div>";
 317
 318                                         tmp += "<div class=\"cdmFooter\"><span class='s0'>";
 319                                         tmp += __("Select:")+
 320                                                 " <input type=\"checkbox\" "+
 321                                                 "onclick=\"toggleSelectRowById(this, 'RROW-"+id+"')\" "+
 322                                                 "class=\"feedCheckBox\" id=\"RCHK-"+id+"\">";
 323
 324                                         tmp += "</span><span class='s1'>"+marked_pic+"</span> ";
 325
 326                                         tmp += "<span class='s1'>"+
 327                                                 "<img class='tagsPic' src='images/tag.png' alt='Tags' title='Tags'>"+
 328                                                 "<span id=\"ATSTR-"+id+"\">"+rs.fieldByName("tags")+"</span>"+
 329                                                 "</span>";
 330
 331                                         tmp += "<span class='s2'>Toggle: <a class=\"cdmToggleLink\""+
 332                                                 "href=\"javascript:toggleUnread("+id+")\">"+
 333                                                 "Unread</a></span>";
 334                                         tmp += "</div>";
 335
 336                                         tmp += "</div>";
 337                                 }
 338
 339                                 rs.next();
 340                                 line_num++;
 341                         }
 342
 343                         if (line_num - offset*30 < 30) {
 344                                 _infscroll_disable = 1;
 345                         }
 346
 347                         rs.close();
 348
 349                         if (offset == 0) {
 350                                 tmp += "</table>";
 351                                 tmp += "</div></div>";
 352                         }
 353
 354                         if (offset == 0) {
 355                                 var container = document.getElementById("headlines-frame");
 356                                 container.innerHTML = tmp;
 357                         } else {
 358                                 var ids = getSelectedArticleIds2();
 359
 360                                 var container = document.getElementById("headlinesList");
 361                                 container.innerHTML = container.innerHTML + tmp;
 362
 363                                 for (var i = 0; i < ids.length; i++) {
 364                                         markHeadline(ids[i]);
 365                                 }
 366                         }
 367                 }
 368
 369                 remove_splash();
 370
 371                 _infscroll_request_sent = 0;
 372
 373         } catch (e) {
 374                 exception_error("viewfeed_offline", e);
 375         }
 376 }
 377
 378 function render_offline_feedlist() {
 379         try {
 380                 var tmp = "<ul class=\"feedList\" id=\"feedList\">";
 381
 382                 var unread = get_local_feed_unread(-4);
 383
 384                 global_unread = unread;
 385                 updateTitle();
 386
 387                 tmp += printFeedEntry(-4, __("All articles"), "feed", unread,
 388                         "images/tag.png");
 389
 390                 var unread = get_local_feed_unread(-1);
 391
 392                 tmp += printFeedEntry(-1, __("Starred articles"), "feed", unread,
 393                         "images/mark_set.png");
 394
 395                 tmp += "<li><hr/></li>";
 396
 397                 var rs = db.execute("SELECT feeds.id,feeds.title,has_icon,COUNT(articles.id) "+
 398                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 399                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 400                         "ORDER BY feeds.title");
 401
 402                 while (rs.isValidRow()) {
 403
 404                         var id = rs.field(0);
 405                         var title = rs.field(1);
 406                         var has_icon = rs.field(2);
 407                         var unread = rs.field(3);
 408
 409                         var icon = "";
 410
 411                         if (has_icon) {
 412                                 icon = "icons/" + id + ".ico";
 413                         }
 414
 415
 416                         var feed_icon = "";
 417
 418                         var row_class = "feed";
 419
 420                         if (unread > 0) {
 421                                 row_class += "Unread";
 422                                 fctr_class = "feedCtrHasUnread";
 423                         } else {
 424                                 fctr_class = "feedCtrNoUnread";
 425                         }
 426
 427                         tmp += printFeedEntry(id, title, "feed", unread, icon);
 428
 429                         rs.next();
 430                 }
 431
 432                 rs.close();
 433
 434                 tmp += "</ul>";
 435
 436                 render_feedlist(tmp);
 437         } catch (e) {
 438                 exception_error("render_offline_feedlist", e);
 439         }
 440 }
 441
 442 function init_offline() {
 443         try {
 444                 offline_mode = true;
 445
 446                 Element.hide("dispSwitchPrompt");
 447                 Element.hide("feedBrowserPrompt");
 448
 449                 var tb_form = document.getElementById("main_toolbar_form");
 450                 Element.hide(tb_form.update);
 451
 452                 var top_links = document.getElementById("topLinks");
 453                 top_links.innerHTML = __("Offline mode");
 454
 455                 var chooser = document.getElementById("quickMenuChooser");
 456                 chooser.disabled = true;
 457
 458                 var rs = db.execute("SELECT key, value FROM init_params");
 459
 460                 while (rs.isValidRow()) {
 461                         init_params[rs.field(0)] = rs.field(1);
 462                         rs.next();
 463                 }
 464
 465                 rs.close();
 466
 467                 render_offline_feedlist();
 468                 init_second_stage();
 469                 remove_splash();
 470         } catch (e) {
 471                 exception_error("init_offline", e);
 472         }
 473 }
 474
 475 function offline_download_parse(stage, transport) {
 476         try {
 477                 if (transport.responseXML) {
 478
 479                         if (stage == 0) {
 480
 481                                 var feeds = transport.responseXML.getElementsByTagName("feed");
 482
 483                                 if (feeds.length > 0) {
 484                                         db.execute("DELETE FROM feeds");
 485                                 }
 486
 487                                 for (var i = 0; i < feeds.length; i++) {
 488                                         var id = feeds[i].getAttribute("id");
 489                                         var has_icon = feeds[i].getAttribute("has_icon");
 490                                         var title = feeds[i].firstChild.nodeValue;
 491
 492                                         db.execute("INSERT INTO feeds (id,title,has_icon)"+
 493                                                 "VALUES (?,?,?)",
 494                                                 [id, title, has_icon]);
 495                                 }
 496
 497                                 window.setTimeout("update_offline_data("+(stage+1)+")", 60*1000);
 498                         } else {
 499
 500                                 var articles = transport.responseXML.getElementsByTagName("article");
 501
 502                                 var articles_found = 0;
 503
 504                                 for (var i = 0; i < articles.length; i++) {
 505                                         var a = eval("("+articles[i].firstChild.nodeValue+")");
 506                                         articles_found++;
 507                                         if (a) {
 508
 509                                                 var date = new Date();
 510                                                 var ts = Math.round(date.getTime() / 1000);
 511
 512                                                 db.execute("DELETE FROM articles WHERE id = ?", [a.id]);
 513                                                 db.execute("INSERT INTO articles "+
 514                                                 "(id, feed_id, title, link, guid, updated, content, "+
 515                                                         "unread, marked, tags, added, comments) "+
 516                                                 "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
 517                                                         [a.id, a.feed_id, a.title, a.link, a.guid, a.updated,
 518                                                                 a.content, a.unread, a.marked, a.tags, ts,
 519                                                                 a.comments]);
 520
 521                                         }
 522                                 }
 523
 524                                 if (articles_found > 0) {
 525                                         window.setTimeout("update_offline_data("+(stage+1)+")", 60*1000);
 526                                 } else {
 527                                         window.setTimeout("update_offline_data(0)", 1800*1000);
 528
 529                                         var date = new Date();
 530                                         var ts = Math.round(date.getTime() / 1000);
 531
 532                                         db.execute("DELETE FROM articles WHERE added < ? - 2592000", [ts]);
 533
 534                                 }
 535                         }
 536
 537                 }
 538         } catch (e) {
 539                 exception_error("offline_download_parse", e);
 540         }
 541 }
 542
 543 function update_offline_data(stage) {
 544         try {
 545
 546                 if (!stage) stage = 0;
 547
 548                 debug("update_offline_data: stage " + stage);
 549
 550 //              notify_progress("Loading, please wait... (" + stage +")", true);
 551
 552                 var query = "backend.php?op=rpc&subop=download&stage=" + stage;
 553
 554                 var rs = db.execute("SELECT MAX(id), MIN(id) FROM articles");
 555
 556                 if (rs.isValidRow() && rs.field(0)) {
 557                         var offline_dl_max_id = rs.field(0);
 558                         var offline_dl_min_id = rs.field(1);
 559
 560                         query = query + "&cidt=" + offline_dl_max_id;
 561                         query = query + "&cidb=" + offline_dl_min_id;
 562                 }
 563
 564                 rs.close();
 565
 566                 new Ajax.Request(query, {
 567                         onComplete: function(transport) {
 568                                 offline_download_parse(stage, transport);
 569                                 debug("update_offline_data: done " + stage);
 570                         } });
 571
 572         } catch (e) {
 573                 exception_error("initiate_offline_download", e);
 574         }
 575 }
 576
 577 function set_feedlist_counter(id, ctr) {
 578         try {
 579
 580                 var feedctr = document.getElementById("FEEDCTR-" + id);
 581                 var feedu = document.getElementById("FEEDU-" + id);
 582                 var feedr = document.getElementById("FEEDR-" + id);
 583
 584                 if (feedctr && feedu && feedr) {
 585
 586                         var row_needs_hl = (ctr > 0 && ctr > parseInt(feedu.innerHTML));
 587
 588                         feedu.innerHTML = ctr;
 589
 590                         if (ctr > 0) {
 591                                 feedctr.className = "feedCtrHasUnread";
 592                                 if (!feedr.className.match("Unread")) {
 593                                         var is_selected = feedr.className.match("Selected");
 594
 595                                         feedr.className = feedr.className.replace("Selected", "");
 596                                         feedr.className = feedr.className.replace("Unread", "");
 597
 598                                         feedr.className = feedr.className + "Unread";
 599
 600                                         if (is_selected) {
 601                                                 feedr.className = feedr.className + "Selected";
 602                                         }
 603
 604                                 }
 605
 606                                 if (row_needs_hl) {
 607                                         new Effect.Highlight(feedr, {duration: 1, startcolor: "#fff7d5",
 608                                                 queue: { position:'end', scope: 'EFQ-' + id, limit: 1 } } );
 609                                 }
 610                         } else {
 611                                 feedctr.className = "feedCtrNoUnread";
 612                                 feedr.className = feedr.className.replace("Unread", "");
 613                         }
 614                 }
 615
 616         } catch (e) {
 617                 exception_error("set_feedlist_counter", e);
 618         }
 619 }
 620
 621 function update_local_feedlist_counters() {
 622         try {
 623                 if (!db) return;
 624
 625                 var rs = db.execute("SELECT feeds.id,COUNT(articles.id) "+
 626                         "FROM feeds LEFT JOIN articles ON (feed_id = feeds.id) "+
 627                         "WHERE unread = 1 OR unread IS NULL GROUP BY feeds.id "+
 628                         "ORDER BY feeds.title");
 629
 630                 while (rs.isValidRow()) {
 631                         var id = rs.field(0);
 632                         var ctr = rs.field(1);
 633
 634                         set_feedlist_counter(id, ctr);
 635
 636                         rs.next();
 637                 }
 638
 639                 rs.close();
 640
 641                 set_feedlist_counter(-4, get_local_feed_unread(-4));
 642                 set_feedlist_counter(-1, get_local_feed_unread(-1));
 643
 644                 hideOrShowFeeds(getInitParam("hide_read_feeds") == 1);
 645
 646                 global_unread = get_local_feed_unread(-4);
 647                 updateTitle();
 648
 649         } catch (e) {
 650                 exception_error("update_local_feedlist_counters", e);
 651         }
 652 }
 653
 654 function get_local_feed_unread(id) {
 655         try {
 656                 var rs;
 657
 658                 if (id == -4) {
 659                         rs = db.execute("SELECT SUM(unread) FROM articles");
 660                 } else if (id == -1) {
 661                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE marked = 1");
 662                 } else {
 663                         rs = db.execute("SELECT SUM(unread) FROM articles WHERE feed_id = ?", [id]);
 664                 }
 665
 666                 var a = false;
 667
 668                 if (rs.isValidRow()) {
 669                         a = rs.field(0);
 670                 } else {
 671                         a = 0;
 672                 }
 673
 674                 rs.close();
 675
 676                 return a;
 677
 678         } catch (e) {
 679                 exception_error("get_local_feed_unread", e);
 680         }
 681 }
 682
 683 function init_gears() {
 684         try {
 685
 686                 if (window.google && google.gears) {
 687                         localServer = google.gears.factory.create("beta.localserver");
 688                         store = localServer.createManagedStore("tt-rss");
 689                         db = google.gears.factory.create('beta.database');
 690                         db.open('tt-rss');
 691
 692                         db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
 693
 694                         var rs = db.execute("SELECT schema_version FROM version");
 695
 696                         var version = "";
 697
 698                         if (rs.isValidRow()) {
 699                                 version = rs.field(0);
 700                         }
 701
 702                         rs.close();
 703
 704                         if (version != SCHEMA_VERSION) {
 705                                 db.execute("DROP TABLE IF EXISTS init_params");
 706                                 db.execute("DROP TABLE IF EXISTS cache");
 707                                 db.execute("DROP TABLE IF EXISTS feeds");
 708                                 db.execute("DROP TABLE IF EXISTS articles");
 709                                 db.execute("DROP TABLE IF EXISTS version");
 710                                 db.execute("CREATE TABLE IF NOT EXISTS version (schema_version text)");
 711                                 db.execute("INSERT INTO version (schema_version) VALUES (?)",
 712                                         [SCHEMA_VERSION]);
 713                         }
 714
 715                         db.execute("CREATE TABLE IF NOT EXISTS init_params (key text, value text)");
 716
 717                         db.execute("CREATE TABLE IF NOT EXISTS cache (id text, article text, param text, added text)");
 718                         db.execute("CREATE TABLE IF NOT EXISTS feeds (id integer, title text, has_icon integer)");
 719                         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)");
 720
 721
 722                         db.execute("DELETE FROM cache WHERE id LIKE 'F:%' OR id LIKE 'C:%'");
 723
 724                         window.setTimeout("update_offline_data(0)", 100);
 725
 726                 }
 727
 728                 cache_expire();
 729
 730         } catch (e) {
 731                 exception_error("init_gears", e);
 732         }
 733 }
 734
 735