assets/www/js/history.js

   1 /*
   2  * This file is part of WolneLektury-Mobile, licensed under GNU Affero GPLv3 or later.
   3  * Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4  */
   5
   6 var History = new function() {
   7         var self = this;
   8
   9         self.init = function(success, error) {
  10                 console.log('History.init');
  11
  12                 self.viewStack = [];
  13                 navigator.app.overrideBackbutton();
  14                 document.addEventListener("backbutton", History.goBack, true);
  15
  16                 success && success();
  17         };
  18
  19         self.visit = function(url, offset) {
  20                 offset = offset || 0;
  21                 self.viewStack.push(View.current);
  22                 console.log('History.visit: ' + url);
  23                 View.enter(url, offset);
  24         };
  25
  26         self.goBack = function() {
  27                 if (self.viewStack.length > 0) {
  28                         var url = self.viewStack.pop();
  29                         console.log('History.goBack: ' + url);
  30                         View.enter(url);
  31                 }
  32                 else {
  33                         console.log('History: exiting');
  34                         navigator.app.exitApp();
  35                 }
  36         };
  37
  38
  39         self.lastRead = function() {
  40                 var last_read = window.localStorage.getItem('History.last_ids');
  41                 try {
  42                         return last_read.split(';');
  43                 } catch (err) {
  44                         return [];
  45                 }
  46         };
  47
  48         self.addRead = function(id, offset) {
  49                 id = "" + id; // this should check if int
  50                 console.log("History.addRead: " + id);
  51                 var last_read = self.lastRead();
  52                 var lastly = last_read.indexOf(id);
  53                 if (lastly != -1) {
  54                         last_read.splice(lastly, 1);
  55                 }
  56                 while (last_read.length >= 10) {
  57                         last_read.pop();
  58                 }
  59                 last_read.unshift(id);
  60                 window.localStorage.setItem('History.last_ids', last_read.join(';'));
  61         }
  62
  63
  64         self.bookmarks = function() {
  65                 var bookmarks = window.localStorage.getItem('History.bookmarks');
  66                 try {
  67                         return JSON.parse(bookmarks) || [];
  68                 } catch (err) {
  69                         return [];
  70                 }
  71         };
  72
  73         self.addBookmark = function(name) {
  74                 var id=(new Date).getTime();
  75                 console.log("History.addBookmark: " + id);
  76
  77                 var bms = self.bookmarks();
  78                 bms.unshift({
  79                         id: id,
  80                         name: name,
  81                         title: View.currentTitle,
  82                         view: View.currentView,
  83                         par: View.currentPar,
  84                         offset: currentOffset()
  85                 });
  86                 window.localStorage.setItem('History.bookmarks', JSON.stringify(bms));
  87         }
  88
  89         self.deleteBookmark = function(id) {
  90                 console.log("History.deleteBookmark: " + id);
  91                 var bms = self.bookmarks();
  92                 for (b in bms) {
  93                         if (bms[b].id == id) {
  94                                 bms.splice(b, 1);
  95                         }
  96                 }
  97                 window.localStorage.setItem('History.bookmarks', JSON.stringify(bms));
  98                 View.onBookmarkChange();
  99         }
 100 }