walnut_launchpad.html/js/lib/angular/multiselect-dropdown.js

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angular.module('ui.multiselect', [])
//from bootstrap-ui typeahead parser
.factory('optionParser', ['$parse', function ($parse) {
var TYPEAHEAD_REGEXP = /^\s*(.*?)(?:\s+as\s+(.*?))?\s+for\s+(?:([\$\w][\$\w\d]*))\s+in\s+(.*)$/;
return {
parse: function (input) {
var match = input.match(TYPEAHEAD_REGEXP), modelMapper, viewMapper, source;
if (!match) {
throw new Error(
"Expected typeahead specification in form of '_modelValue_ (as _label_)? for _item_ in _collection_'" +
" but got '" + input + "'.");
}
return {
itemName: match[3],
source: $parse(match[4]),
viewMapper: $parse(match[2] || match[1]),
modelMapper: $parse(match[1])
};
}
};
}])
.directive('multiselect', ['$parse', '$document', '$compile', 'optionParser',
function ($parse, $document, $compile, optionParser) {
return {
restrict: 'E',
require: 'ngModel',
link: function (originalScope, element, attrs, modelCtrl) {
var exp = attrs.options,
parsedResult = optionParser.parse(exp),
isMultiple = attrs.multiple ? true : false,
required = false,
scope = originalScope.$new(),
changeHandler = attrs.change || anguler.noop;
scope.items = [];
scope.header = 'Select';
scope.multiple = isMultiple;
scope.disabled = false;
originalScope.$on('$destroy', function () {
scope.$destroy();
});
var popUpEl = angular.element('<multiselect-popup></multiselect-popup>');
//required validator
if (attrs.required || attrs.ngRequired) {
required = true;
}
attrs.$observe('required', function(newVal) {
required = newVal;
});
//watch disabled state
scope.$watch(function () {
return $parse(attrs.disabled)(originalScope);
}, function (newVal) {
scope.disabled = newVal;
});
//watch single/multiple state for dynamically change single to multiple
scope.$watch(function () {
return $parse(attrs.multiple)(originalScope);
}, function (newVal) {
isMultiple = newVal || false;
});
//watch option changes for options that are populated dynamically
scope.$watch(function () {
return parsedResult.source(originalScope);
}, function (newVal) {
if (angular.isDefined(newVal))
parseModel();
});
//watch model change
scope.$watch(function () {
return modelCtrl.$modelValue;
}, function (newVal, oldVal) {
//when directive initialize, newVal usually undefined. Also, if model value already set in the controller
//for preselected list then we need to mark checked in our scope item. But we don't want to do this every time
//model changes. We need to do this only if it is done outside directive scope, from controller, for example.
if (angular.isDefined(newVal)) {
markChecked(newVal);
scope.$eval(changeHandler);
}
getHeaderText();
modelCtrl.$setValidity('required', scope.valid());
}, true);
function parseModel() {
scope.items.length = 0;
var model = parsedResult.source(originalScope);
for (var i = 0; i < model.length; i++) {
var local = {};
local[parsedResult.itemName] = model[i];
scope.items.push({
label: parsedResult.viewMapper(local),
model: model[i],
checked: false
});
}
}
parseModel();
element.append($compile(popUpEl)(scope));
function getHeaderText() {
var edit = "edit";
if (!modelCtrl.$modelValue || !modelCtrl.$modelValue.length) return scope.header = 'Can ' + edit;
if (isMultiple) {
edit = '';
var accessLevelArray = [];
modelCtrl.$modelValue.forEach(function(level) {
accessLevelArray.push(level.name);
});
scope.header = "Can " + accessLevelArray.join(', ');
} else {
var local = {};
local[parsedResult.itemName] = modelCtrl.$modelValue;
scope.header = parsedResult.viewMapper(local);
}
}
scope.valid = function validModel() {
if(!required) return true;
var value = modelCtrl.$modelValue;
return (angular.isArray(value) && value.length > 0) || (!angular.isArray(value) && value != null);
};
function selectSingle(item) {
if (item.checked) {
scope.uncheckAll();
} else {
scope.uncheckAll();
item.checked = !item.checked;
}
setModelValue(false);
}
function selectMultiple(item) {
item.checked = !item.checked;
setModelValue(true);
}
function setModelValue(isMultiple) {
var value;
if (isMultiple) {
value = [];
angular.forEach(scope.items, function (item) {
if (item.checked) value.push(item.model);
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});
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} else {
angular.forEach(scope.items, function (item) {
if (item.checked) {
value = item.model;
return false;
}
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});
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}
modelCtrl.$setViewValue(value);
}
function markChecked(newVal) {
if (!angular.isArray(newVal)) {
angular.forEach(scope.items, function (item) {
if (angular.equals(item.model, newVal)) {
item.checked = true;
return false;
}
});
} else {
angular.forEach(newVal, function (i) {
angular.forEach(scope.items, function (item) {
if (angular.equals(item.model, i)) {
item.checked = true;
}
});
});
}
}
scope.checkAll = function () {
if (!isMultiple) return;
angular.forEach(scope.items, function (item) {
item.checked = true;
});
setModelValue(true);
};
scope.uncheckAll = function () {
angular.forEach(scope.items, function (item) {
item.checked = false;
});
setModelValue(true);
};
scope.select = function (item) {
if (isMultiple === false) {
selectSingle(item);
scope.toggleSelect();
} else {
selectMultiple(item);
}
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};
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}
};
}])
.directive('multiselectPopup', ['$document', function ($document) {
return {
restrict: 'E',
scope: false,
replace: true,
templateUrl: 'templates/widgets/share-access-multiselect.html',
link: function (scope, element, attrs) {
scope.isVisible = false;
scope.toggleSelect = function () {
if (element.hasClass('open')) {
element.removeClass('open');
$document.unbind('click', clickHandler);
} else {
element.addClass('open');
scope.focus();
$document.bind('click', clickHandler);
}
};
function clickHandler(event) {
if (elementMatchesAnyInArray(event.target, element.find(event.target.tagName)))
return;
element.removeClass('open');
$document.unbind('click', clickHandler);
scope.$digest();
}
scope.focus = function focus(){
var searchBox = element.find('input')[0];
searchBox.focus();
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};
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var elementMatchesAnyInArray = function (element, elementArray) {
for (var i = 0; i < elementArray.length; i++)
if (element == elementArray[i])
return true;
return false;
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};
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}
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};
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}]);