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                 debug('History.init');
  11
  12                 self.viewStack = [];
  13                 //navigator.app.overrideBackbutton(); FIXME!!!
  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                 View.showBack(true);
  23                 debug('History.visit: ' + url);
  24                 View.enter(url, offset);
  25         };
  26
  27         self.goBack = function() {
  28                 if (self.viewStack.length > 0) {
  29                         var url = self.viewStack.pop();
  30                         debug('History.goBack: ' + url);
  31                         if (self.viewStack.length == 0)
  32                                 View.showBack(false);
  33                         View.enter(url);
  34                 }
  35                 else {
  36                         debug('History: exiting');
  37                         navigator.app.exitApp();
  38                 }
  39         };
  40
  41
  42         self.lastRead = function() {
  43                 var last_read = window.localStorage.getItem('History.last_ids');
  44                 try {
  45                         return last_read.split(';');
  46                 } catch (err) {
  47                         return [];
  48                 }
  49         };
  50
  51         self.addRead = function(id, offset) {
  52                 id = "" + id; // this should check if int
  53                 debug("History.addRead: " + id);
  54                 var last_read = self.lastRead();
  55                 var lastly = last_read.indexOf(id);
  56                 if (lastly != -1) {
  57                         last_read.splice(lastly, 1);
  58                 }
  59                 while (last_read.length >= 10) {
  60                         last_read.pop();
  61                 }
  62                 last_read.unshift(id);
  63                 window.localStorage.setItem('History.last_ids', last_read.join(';'));
  64         }
  65
  66
  67         self.bookmarks = function() {
  68                 var bookmarks = window.localStorage.getItem('History.bookmarks');
  69                 try {
  70                         return JSON.parse(bookmarks) || [];
  71                 } catch (err) {
  72                         return [];
  73                 }
  74         };
  75
  76         self.addBookmark = function(name) {
  77                 var id=(new Date).getTime();
  78                 debug("History.addBookmark: " + id);
  79
  80                 var bms = self.bookmarks();
  81                 bms.unshift({
  82                         id: id,
  83                         name: name,
  84                         title: View.currentTitle,
  85                         view: View.currentView,
  86                         par: View.currentPar,
  87                         offset: currentOffset()
  88                 });
  89                 window.localStorage.setItem('History.bookmarks', JSON.stringify(bms));
  90         }
  91
  92         self.deleteBookmark = function(id) {
  93                 debug("History.deleteBookmark: " + id);
  94                 var bms = self.bookmarks();
  95                 for (b in bms) {
  96                         if (bms[b].id == id) {
  97                                 bms.splice(b, 1);
  98                         }
  99                 }
 100                 window.localStorage.setItem('History.bookmarks', JSON.stringify(bms));
 101                 View.onBookmarkChange();
 102         }
 103 }