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angular-multi-select.js
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angular-multi-select.js
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/*
Multiple-select directive for AngularJS
(c) 2014 Tyler Mendenhall (https://github.com/tmendenhall/angular-multi-select)
License: MIT
forked from
(c) 2013 Alec LaLonde (https://github.com/alalonde/angular-multi-select)
License: MIT
*/
(function(angular) {
'use strict';
angular.module('multi-select', ["template/multiSelect.html"])
.directive('multiSelect', ['$q', '$parse', '$filter',function($q, $parse, $filter) {
function appendSelected(entities) {
var newEntities = [];
angular.forEach(entities, function(entity) {
var appended = entity;
appended.selected = false;
newEntities.push(appended);
});
return newEntities;
}
return {
restrict: 'E',
require: 'ngModel',
scope: {
selectedLabel: "@",
availableLabel: "@",
available: "=",
model: "=ngModel",
config: "="
},
templateUrl: "template/multiSelect.html",
link: function(scope, elm, attrs, controllers) {
scope.selected = {
available: [],
current: []
};
/* Handles cases where scope data hasn't been initialized yet */
var dataLoading = function(scopeAttr) {
var loading = $q.defer();
if((scope[scopeAttr] && !scope[scopeAttr].hasOwnProperty('$promise')) ||
(scope[scopeAttr] && scope[scopeAttr].length > 0)) {
loading.resolve(scope[scopeAttr]);
} else {
scope.$watch(scopeAttr, function(newValue, oldValue) {
if(newValue && newValue.length > 0)
loading.resolve(newValue);
});
}
return loading.promise;
};
/* Filters out items in original that are also in toFilter. Compares by reference. */
function filterOut(original, toFilter) {
var filtered = [];
angular.forEach(original, function(entity) {
var match = false;
for(var i = 0; i < toFilter.length; i++) {
if(scope.renderItem(toFilter[i]) === scope.renderItem(entity)) {
match = true;
break;
}
}
if(!match) {
filtered.push(entity);
}
});
return filtered;
}
function removeMutallyExclusive(source,target){
var toRemove = [];
angular.forEach(source, function(item){
for (var x = 0; x < item.mx.length; x++){
// mx loop for the incoming element
var id = item.mx[x];
for (var z = 0; z < target.length; z++){
if (target[z].roleId === id){
toRemove.push(target[z]);
}
}
}
});
return toRemove;
}
function parseExpression(item, expr) {
var displayComponents = expr.match(/(.+)\s+as\s+(.+)/);
var ctx = {};
ctx[displayComponents[1]] = item;
return $parse(displayComponents[2])(ctx);
}
var requiredMin, inputModel;
function ensureMinSelected() {
if(requiredMin && scope.model) {
scope.numSelected = scope.model.length;
inputModel.$setValidity('min', scope.numSelected >= requiredMin);
}
}
// call as a result of either load promise being fulfilled
// as a watch on model
scope.refreshAvailable = function() {
scope.available = $filter('orderBy')(filterOut(scope.available, scope.model),'roleName');
scope.selected.available = $filter('orderBy')(appendSelected(scope.available),'roleName');
scope.selected.current = $filter('orderBy')(appendSelected(scope.model),'roleName');
};
scope.disableMXSelected = function(selectedElement){
var mx = selectedElement.mx;
angular.forEach(scope.selected.available, function(element){
// this function needs to be patched for old IE8 browsers
if (mx.indexOf(element.roleId) > -1 ){
element.selected = false;
}
});
};
scope.add = function() {
var listToAdd = scope.selected(scope.selected.available);
var mx = [];
if (scope.selected.current){ // handle empty case
mx = removeMutallyExclusive(listToAdd,scope.selected.current);
}
scope.available = $filter('orderBy')(scope.available.concat(mx),'roleName');
scope.model = filterOut(scope.model,mx);
scope.model = $filter('orderBy')(scope.model.concat(listToAdd),'roleName');
};
scope.remove = function() {
var selected = scope.selected(scope.selected.current);
scope.available = $filter('orderBy')(scope.available.concat(selected),'roleName');
scope.model = $filter('orderBy')(filterOut(scope.model, selected),'roleName');
};
scope.selected = function(list) {
var found = [];
angular.forEach(list, function(item) { if(item.selected === true) found.push(item); });
return found;
};
$q.all([dataLoading("model"), dataLoading("available")]).then(function(results) {
scope.refreshAvailable();
scope.$watch('model', scope.refreshAvailable);
});
scope.renderItem = function(item) {
return parseExpression(item, attrs.display);
};
scope.renderTitle = function(item) {
if(attrs.title) {
return parseExpression(item, attrs.title);
}
return "";
};
if(scope.config && angular.isDefined(scope.config.requiredMin)) {
var inputs = elm.find("input");
var validationInput = angular.element(inputs[inputs.length - 1]);
inputModel = validationInput.controller('ngModel');
}
scope.$watch('config.requiredMin', function(value) {
if(angular.isDefined(value)) {
requiredMin = parseInt(value, 10);
ensureMinSelected();
}
});
scope.$watch('model', function(selected) {
ensureMinSelected();
});
// keep an eye on this..
// it was added because the inital state was incorrect
// and refreshAvailable was not being called.
scope.$watch('available', function(availModel){
scope.selected.available = $filter('orderBy')(angular.copy(availModel),'roleName');
});
}
};
}]);
angular.module("template/multiSelect.html", []).run(["$templateCache", function($templateCache) {
$templateCache.put("template/multiSelect.html",
'<div class="multiSelect">' +
'<div class="select">' +
'<label class="control-label" for="multiSelectAvailable">{{ availableLabel }} ' +
'({{ available.length }})</label>' +
'<ul>' +
'<li ng-repeat="entity in available | orderBy:\'roleName\'">' +
'<label class="checkbox" title="{{ renderTitle(entity) }}">' +
'<input type="checkbox" ng-model="selected.available[$index].selected" ng-change="disableMXSelected(selected.available[$index])"> ' +
'{{ renderItem(entity) }}' +
'</label>' +
'</li>' +
'</ul>' +
'</div>' +
'<div class="select buttons">' +
'<button class="btn btn-primary mover right" ng-click="add()" title="Add selected" ' +
'ng-disabled="!selected(selected.available).length">' +
'<i class="glyphicon glyphicon-arrow-right"></i>' +
'</button>' +
'<button class="btn btn-primary mover left" ng-click="remove()" title="Remove selected" ' +
'ng-disabled="!selected(selected.current).length">' +
'<i class="glyphicon glyphicon-arrow-left"></i>' +
'</button>' +
'</div>' +
'<div class="select">' +
'<label class="control-label" for="multiSelectSelected">{{ selectedLabel }} ' +
'({{ model.length }})</label>' +
'<ul>' +
'<li ng-repeat="entity in model | orderBy:\'roleName\'">' +
'<label class="checkbox" title="{{ renderTitle(entity) }}">' +
'<input type="checkbox" ng-model="selected.current[$index].selected"> ' +
'{{ renderItem(entity) }}' +
'</label>' +
'</li>' +
'</ul>' +
'</div>' +
'<input type="hidden" name="numSelected" ng-model="numSelected"/> '+
'</div>');
}])
;
})(angular);