148 lines
4.3 KiB
JavaScript
148 lines
4.3 KiB
JavaScript
/**
|
|
* Checklist-model
|
|
* AngularJS directive for list of checkboxes
|
|
* https://github.com/vitalets/checklist-model
|
|
* License: MIT http://opensource.org/licenses/MIT
|
|
*/
|
|
|
|
angular.module('checklist-model', [])
|
|
.directive('checklistModel', ['$parse', '$compile', function($parse, $compile) {
|
|
// contains
|
|
function contains(arr, item, comparator) {
|
|
if (angular.isArray(arr)) {
|
|
for (var i = arr.length; i--;) {
|
|
if (comparator(arr[i], item)) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// add
|
|
function add(arr, item, comparator) {
|
|
arr = angular.isArray(arr) ? arr : [];
|
|
if(!contains(arr, item, comparator)) {
|
|
arr.push(item);
|
|
}
|
|
return arr;
|
|
}
|
|
|
|
// remove
|
|
function remove(arr, item, comparator) {
|
|
if (angular.isArray(arr)) {
|
|
for (var i = arr.length; i--;) {
|
|
if (comparator(arr[i], item)) {
|
|
arr.splice(i, 1);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return arr;
|
|
}
|
|
|
|
// http://stackoverflow.com/a/19228302/1458162
|
|
function postLinkFn(scope, elem, attrs) {
|
|
// exclude recursion, but still keep the model
|
|
var checklistModel = attrs.checklistModel;
|
|
attrs.$set("checklistModel", null);
|
|
// compile with `ng-model` pointing to `checked`
|
|
$compile(elem)(scope);
|
|
attrs.$set("checklistModel", checklistModel);
|
|
|
|
// getter / setter for original model
|
|
var getter = $parse(checklistModel);
|
|
var setter = getter.assign;
|
|
var checklistChange = $parse(attrs.checklistChange);
|
|
var checklistBeforeChange = $parse(attrs.checklistBeforeChange);
|
|
|
|
// value added to list
|
|
var value = attrs.checklistValue ? $parse(attrs.checklistValue)(scope.$parent) : attrs.value;
|
|
|
|
|
|
var comparator = angular.equals;
|
|
|
|
if (attrs.hasOwnProperty('checklistComparator')){
|
|
if (attrs.checklistComparator[0] == '.') {
|
|
var comparatorExpression = attrs.checklistComparator.substring(1);
|
|
comparator = function (a, b) {
|
|
return a[comparatorExpression] === b[comparatorExpression];
|
|
};
|
|
|
|
} else {
|
|
comparator = $parse(attrs.checklistComparator)(scope.$parent);
|
|
}
|
|
}
|
|
|
|
// watch UI checked change
|
|
scope.$watch(attrs.ngModel, function(newValue, oldValue) {
|
|
if (newValue === oldValue) {
|
|
return;
|
|
}
|
|
|
|
if (checklistBeforeChange && (checklistBeforeChange(scope) === false)) {
|
|
scope[attrs.ngModel] = contains(getter(scope.$parent), value, comparator);
|
|
return;
|
|
}
|
|
|
|
setValueInChecklistModel(value, newValue);
|
|
|
|
if (checklistChange) {
|
|
checklistChange(scope);
|
|
}
|
|
});
|
|
|
|
function setValueInChecklistModel(value, checked) {
|
|
var current = getter(scope.$parent);
|
|
if (angular.isFunction(setter)) {
|
|
if (checked === true) {
|
|
setter(scope.$parent, add(current, value, comparator));
|
|
} else {
|
|
setter(scope.$parent, remove(current, value, comparator));
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// declare one function to be used for both $watch functions
|
|
function setChecked(newArr, oldArr) {
|
|
if (checklistBeforeChange && (checklistBeforeChange(scope) === false)) {
|
|
setValueInChecklistModel(value, scope[attrs.ngModel]);
|
|
return;
|
|
}
|
|
scope[attrs.ngModel] = contains(newArr, value, comparator);
|
|
}
|
|
|
|
// watch original model change
|
|
// use the faster $watchCollection method if it's available
|
|
if (angular.isFunction(scope.$parent.$watchCollection)) {
|
|
scope.$parent.$watchCollection(checklistModel, setChecked);
|
|
} else {
|
|
scope.$parent.$watch(checklistModel, setChecked, true);
|
|
}
|
|
}
|
|
|
|
return {
|
|
restrict: 'A',
|
|
priority: 1000,
|
|
terminal: true,
|
|
scope: true,
|
|
compile: function(tElement, tAttrs) {
|
|
if ((tElement[0].tagName !== 'INPUT' || tAttrs.type !== 'checkbox') && (tElement[0].tagName !== 'MD-CHECKBOX') && (!tAttrs.btnCheckbox)) {
|
|
throw 'checklist-model should be applied to `input[type="checkbox"]` or `md-checkbox`.';
|
|
}
|
|
|
|
if (!tAttrs.checklistValue && !tAttrs.value) {
|
|
throw 'You should provide `value` or `checklist-value`.';
|
|
}
|
|
|
|
// by default ngModel is 'checked', so we set it if not specified
|
|
if (!tAttrs.ngModel) {
|
|
// local scope var storing individual checkbox model
|
|
tAttrs.$set("ngModel", "checked");
|
|
}
|
|
|
|
return postLinkFn;
|
|
}
|
|
};
|
|
}]); |