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
|
/**
* Checklist-model
* AngularJS directive for list of checkboxes
*/
angular.module('checklist-model', [])
.directive('checklistModel', ['$parse', '$compile', function($parse, $compile) {
// contains
function contains(arr, item) {
if (angular.isArray(arr)) {
for (var i = 0; i < arr.length; i++) {
if (angular.equals(arr[i], item)) {
return true;
}
}
}
return false;
}
// add
function add(arr, item) {
arr = angular.isArray(arr) ? arr : [];
for (var i = 0; i < arr.length; i++) {
if (angular.equals(arr[i], item)) {
return arr;
}
}
arr.push(item);
return arr;
}
// remove
function remove(arr, item) {
if (angular.isArray(arr)) {
for (var i = 0; i < arr.length; i++) {
if (angular.equals(arr[i], item)) {
arr.splice(i, 1);
break;
}
}
}
return arr;
}
// http://stackoverflow.com/a/19228302/1458162
function postLinkFn(scope, elem, attrs) {
// compile with `ng-model` pointing to `checked`
$compile(elem)(scope);
// getter / setter for original model
var getter = $parse(attrs.checklistModel);
var setter = getter.assign;
// value added to list
var value = $parse(attrs.checklistValue)(scope.$parent);
// watch UI checked change
scope.$watch('checked', function(newValue, oldValue) {
if (newValue === oldValue) {
return;
}
var current = getter(scope.$parent);
if (newValue === true) {
setter(scope.$parent, add(current, value));
} else {
setter(scope.$parent, remove(current, value));
}
});
// watch original model change
scope.$parent.$watch(attrs.checklistModel, function(newArr, oldArr) {
scope.checked = contains(newArr, value);
}, true);
}
return {
restrict: 'A',
priority: 1000,
terminal: true,
scope: true,
compile: function(tElement, tAttrs) {
if (tElement[0].tagName !== 'INPUT' || tAttrs.type !== 'checkbox') {
throw 'checklist-model should be applied to `input[type="checkbox"]`.';
}
if (!tAttrs.checklistValue) {
throw 'You should provide `checklist-value`.';
}
// exclude recursion
tElement.removeAttr('checklist-model');
// local scope var storing individual checkbox model
tElement.attr('ng-model', 'checked');
return postLinkFn;
}
};
}]);
|
