1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved.
// See License.txt for license information.
var UserStore;
function getPrefix() {
if (!UserStore) {
UserStore = require('./user_store.jsx');
}
return UserStore.getCurrentId() + '_';
}
// Also change model/utils.go ETAG_ROOT_VERSION
var BROWSER_STORE_VERSION = '.4';
module.exports = {
initialized: false,
initialize: function() {
var currentVersion = localStorage.getItem('local_storage_version');
if (currentVersion !== BROWSER_STORE_VERSION) {
this.clear();
localStorage.setItem('local_storage_version', BROWSER_STORE_VERSION);
}
this.initialized = true;
},
getItem: function(name, defaultValue) {
return this.getGlobalItem(getPrefix() + name, defaultValue);
},
setItem: function(name, value) {
this.setGlobalItem(getPrefix() + name, value);
},
removeItem: function(name) {
if (!this.initialized) {
this.initialize();
}
localStorage.removeItem(getPrefix() + name);
},
setGlobalItem: function(name, value) {
if (!this.initialized) {
this.initialize();
}
localStorage.setItem(name, JSON.stringify(value));
},
getGlobalItem: function(name, defaultValue) {
if (!this.initialized) {
this.initialize();
}
var result = null;
try {
result = JSON.parse(localStorage.getItem(name));
} catch (err) {}
if (result === null && typeof defaultValue !== 'undefined') {
result = defaultValue;
}
return result;
},
removeGlobalItem: function(name) {
if (!this.initialized) {
this.initialize();
}
localStorage.removeItem(name);
},
clear: function() {
localStorage.clear();
sessionStorage.clear();
},
/**
* Preforms the given action on each item that has the given prefix
* Signature for action is action(key, value)
*/
actionOnItemsWithPrefix: function(prefix, action) {
if (!this.initialized) {
this.initialize();
}
var globalPrefix = getPrefix();
var globalPrefixiLen = globalPrefix.length;
for (var key in localStorage) {
if (key.lastIndexOf(globalPrefix + prefix, 0) === 0) {
var userkey = key.substring(globalPrefixiLen);
action(userkey, this.getGlobalItem(key));
}
}
},
isLocalStorageSupported: function() {
try {
sessionStorage.setItem('testSession', '1');
sessionStorage.removeItem('testSession');
localStorage.setItem('testLocal', '1');
if (localStorage.getItem('testLocal') !== '1') {
return false;
}
localStorage.removeItem('testLocal', '1');
return true;
} catch (e) {
return false;
}
}
};
|
