-
Notifications
You must be signed in to change notification settings - Fork 3
/
DeepLinkedStateLib.js
71 lines (50 loc) · 1.9 KB
/
DeepLinkedStateLib.js
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
'use strict';
var _ = require('lodash');
var DeepLinkedStateLib = {
getValueFromState: function(statePath, options) {
return DeepLinkedStateLib.getValueFromObject(statePath, options, this.state);
},
getValueFromObject: function(statePath, options, valueObject) {
options = options || {};
var value = valueObject;
var havePath = _.all(statePath, function(statePathPart) {
if (!_.isObject(value) || !value.hasOwnProperty(statePathPart)) {
return false;
}
value = value[statePathPart];
return true;
});
if (!havePath) {
value = null;
}
if (options.storeEmptyStringAsNull) {
if (value === null) {
value = '';
}
}
return value;
},
onChange: function(statePath, options, value) {
var partialState = DeepLinkedStateLib.updateValueObject(statePath, options, value, this.state);
this.setState(partialState);
},
updateValueObject: function(statePath, options, value, valueObject) {
options = options || {};
var statePathDepth = [].concat(statePath);
var statePathLast = statePathDepth.pop();
var partialState = _.pick(valueObject, statePathDepth[0]);
var stateSub = partialState;
_.each(statePathDepth, function(statePathPart) {
stateSub[statePathPart] = _.extend({}, stateSub[statePathPart]);
stateSub = stateSub[statePathPart];
});
if (options.storeEmptyStringAsNull) {
if (value === '') {
value = null;
}
}
stateSub[statePathLast] = value;
return partialState;
}
};
module.exports = DeepLinkedStateLib;