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bootstrap-multiselect.js
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/**
* Bootstrap Multiselect (http://davidstutz.de/bootstrap-multiselect/)
*
* Apache License, Version 2.0:
* Copyright (c) 2012 - 2022 David Stutz
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a
* copy of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* BSD 3-Clause License:
* Copyright (c) 2012 - 2022 David Stutz
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of David Stutz nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
(function (root, factory) {
// check to see if 'knockout' AMD module is specified if using requirejs
if (typeof define === 'function' && define.amd &&
typeof require === 'function' && typeof require.specified === 'function' && require.specified('knockout')) {
// AMD. Register as an anonymous module.
define(['jquery', 'knockout'], factory);
} else {
// Browser globals
factory(root.jQuery, root.ko);
}
})(this, function ($, ko) {
"use strict";// jshint ;_;
if (typeof ko !== 'undefined' && ko.bindingHandlers && !ko.bindingHandlers.multiselect) {
ko.bindingHandlers.multiselect = {
after: ['options', 'value', 'selectedOptions', 'enable', 'disable'],
init: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
var $element = $(element);
var config = ko.toJS(valueAccessor());
$element.multiselect(config);
if (allBindings.has('options')) {
var options = allBindings.get('options');
if (ko.isObservable(options)) {
ko.computed({
read: function () {
options();
setTimeout(function () {
var ms = $element.data('multiselect');
if (ms)
ms.updateOriginalOptions();//Not sure how beneficial this is.
$element.multiselect('rebuild');
}, 1);
},
disposeWhenNodeIsRemoved: element
});
}
}
//value and selectedOptions are two-way, so these will be triggered even by our own actions.
//It needs some way to tell if they are triggered because of us or because of outside change.
//It doesn't loop but it's a waste of processing.
if (allBindings.has('value')) {
var value = allBindings.get('value');
if (ko.isObservable(value)) {
ko.computed({
read: function () {
value();
setTimeout(function () {
$element.multiselect('refresh');
}, 1);
},
disposeWhenNodeIsRemoved: element
}).extend({ rateLimit: 100, notifyWhenChangesStop: true });
}
}
//Switched from arrayChange subscription to general subscription using 'refresh'.
//Not sure performance is any better using 'select' and 'deselect'.
if (allBindings.has('selectedOptions')) {
var selectedOptions = allBindings.get('selectedOptions');
if (ko.isObservable(selectedOptions)) {
ko.computed({
read: function () {
selectedOptions();
setTimeout(function () {
$element.multiselect('refresh');
}, 1);
},
disposeWhenNodeIsRemoved: element
}).extend({ rateLimit: 100, notifyWhenChangesStop: true });
}
}
var setEnabled = function (enable) {
setTimeout(function () {
if (enable)
$element.multiselect('enable');
else
$element.multiselect('disable');
});
};
if (allBindings.has('enable')) {
var enable = allBindings.get('enable');
if (ko.isObservable(enable)) {
ko.computed({
read: function () {
setEnabled(enable());
},
disposeWhenNodeIsRemoved: element
}).extend({ rateLimit: 100, notifyWhenChangesStop: true });
} else {
setEnabled(enable);
}
}
if (allBindings.has('disable')) {
var disable = allBindings.get('disable');
if (ko.isObservable(disable)) {
ko.computed({
read: function () {
setEnabled(!disable());
},
disposeWhenNodeIsRemoved: element
}).extend({ rateLimit: 100, notifyWhenChangesStop: true });
} else {
setEnabled(!disable);
}
}
ko.utils.domNodeDisposal.addDisposeCallback(element, function () {
$element.multiselect('destroy');
});
},
update: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
var $element = $(element);
var config = ko.toJS(valueAccessor());
$element.multiselect('setOptions', config);
$element.multiselect('rebuild');
}
};
}
function forEach(array, callback) {
for (var index = 0; index < array.length; ++index) {
callback(array[index], index);
}
}
var multiselectCount = 0;
/**
* Constructor to create a new multiselect using the given select.
*
* @param {jQuery} select
* @param {Object} options
* @returns {Multiselect}
*/
function Multiselect(select, options) {
this.$select = $(select);
this.options = this.mergeOptions($.extend({}, options, this.$select.data()));
// Placeholder via data attributes
if (this.$select.attr("data-placeholder")) {
this.options.nonSelectedText = this.$select.data("placeholder");
}
// Initialization.
// We have to clone to create a new reference.
this.originalOptions = this.$select.clone()[0].options;
this.query = '';
this.searchTimeout = null;
this.lastToggledInput = null;
this.multiselectId = this.generateUniqueId() + '_' + multiselectCount;
this.internalIdCount = 0;
this.options.multiple = this.$select.attr('multiple') === "multiple";
this.options.onChange = $.proxy(this.options.onChange, this);
this.options.onSelectAll = $.proxy(this.options.onSelectAll, this);
this.options.onDeselectAll = $.proxy(this.options.onDeselectAll, this);
this.options.onDropdownShow = $.proxy(this.options.onDropdownShow, this);
this.options.onDropdownHide = $.proxy(this.options.onDropdownHide, this);
this.options.onDropdownShown = $.proxy(this.options.onDropdownShown, this);
this.options.onDropdownHidden = $.proxy(this.options.onDropdownHidden, this);
this.options.onInitialized = $.proxy(this.options.onInitialized, this);
this.options.onFiltering = $.proxy(this.options.onFiltering, this);
// Build select all if enabled.
this.buildContainer();
this.buildButton();
this.buildDropdown();
this.buildReset();
this.buildSelectAll();
this.buildDropdownOptions();
this.buildFilter();
this.buildButtons();
this.updateButtonText();
this.updateSelectAll(true);
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
this.options.wasDisabled = this.$select.prop('disabled');
if (this.options.disableIfEmpty && $('option', this.$select).length <= 0 && !this.options.wasDisabled) {
this.disable(true);
}
this.$select.wrap('<span class="multiselect-native-select" />').after(this.$container);
this.$select.prop('tabindex', '-1');
if (this.options.widthSynchronizationMode !== 'never') {
this.synchronizeButtonAndPopupWidth();
}
this.$select.data('multiselect', this);
this.options.onInitialized(this.$select, this.$container);
}
Multiselect.prototype = {
defaults: {
/**
* Default text function will either print 'None selected' in case no
* option is selected or a list of the selected options up to a length
* of 3 selected options.
*
* @param {jQuery} options
* @param {jQuery} select
* @returns {String}
*/
buttonText: function (selectedOptions, select) {
if (this.disabledText.length > 0 && select.prop('disabled')) {
return this.disabledText;
}
else if (selectedOptions.length === 0) {
return this.nonSelectedText;
}
else if (this.allSelectedText
&& selectedOptions.length === $('option', $(select)).length
&& $('option', $(select)).length !== 1
&& this.multiple) {
if (this.selectAllNumber) {
return this.allSelectedText + ' (' + selectedOptions.length + ')';
}
else {
return this.allSelectedText;
}
}
else if (this.numberDisplayed != 0 && selectedOptions.length > this.numberDisplayed) {
return selectedOptions.length + ' ' + this.nSelectedText;
}
else {
var selected = '';
var delimiter = this.delimiterText;
selectedOptions.each(function () {
var label = ($(this).attr('label') !== undefined) ? $(this).attr('label') : $(this).text();
selected += label + delimiter;
});
return selected.substr(0, selected.length - this.delimiterText.length);
}
},
/**
* Updates the title of the button similar to the buttonText function.
*
* @param {jQuery} options
* @param {jQuery} select
* @returns {@exp;selected@call;substr}
*/
buttonTitle: function (options, select) {
if (options.length === 0) {
return this.nonSelectedText;
}
else {
var selected = '';
var delimiter = this.delimiterText;
options.each(function () {
var label = ($(this).attr('label') !== undefined) ? $(this).attr('label') : $(this).text();
selected += label + delimiter;
});
return selected.substr(0, selected.length - this.delimiterText.length);
}
},
checkboxName: function (option) {
return false; // no checkbox name
},
/**
* Create a label.
*
* @param {jQuery} element
* @returns {String}
*/
optionLabel: function (element) {
return $(element).attr('label') || $(element).text();
},
/**
* Create a class.
*
* @param {jQuery} element
* @returns {String}
*/
optionClass: function (element) {
return $(element).attr('class') || '';
},
/**
* Triggered on change of the multiselect.
*
* Not triggered when selecting/deselecting options manually.
*
* @param {jQuery} option
* @param {Boolean} checked
*/
onChange: function (option, checked) {
},
/**
* Triggered when the dropdown is shown.
*
* @param {jQuery} event
*/
onDropdownShow: function (event) {
},
/**
* Triggered when the dropdown is hidden.
*
* @param {jQuery} event
*/
onDropdownHide: function (event) {
},
/**
* Triggered after the dropdown is shown.
*
* @param {jQuery} event
*/
onDropdownShown: function (event) {
},
/**
* Triggered after the dropdown is hidden.
*
* @param {jQuery} event
*/
onDropdownHidden: function (event) {
},
/**
* Triggered on select all.
*/
onSelectAll: function (selectedOptions) {
},
/**
* Triggered on deselect all.
*/
onDeselectAll: function (deselectedOptions) {
},
/**
* Triggered after initializing.
*
* @param {jQuery} $select
* @param {jQuery} $container
*/
onInitialized: function ($select, $container) {
},
/**
* Triggered on filtering.
*
* @param {jQuery} $filter
*/
onFiltering: function ($filter) {
},
enableHTML: false,
buttonClass: 'custom-select',
inheritClass: false,
buttonWidth: 'auto',
buttonContainer: '<div class="btn-group" />',
dropRight: false,
dropUp: false,
selectedClass: 'active',
// Maximum height of the dropdown menu.
// If maximum height is exceeded a scrollbar will be displayed.
maxHeight: null,
includeSelectAllOption: false,
includeSelectAllIfMoreThan: 0,
selectAllText: ' Select all',
selectAllValue: 'multiselect-all',
selectAllName: false,
selectAllNumber: true,
selectAllJustVisible: true,
enableFiltering: false,
enableCaseInsensitiveFiltering: false,
enableAccentInsensitiveFiltering: false,
enableFullValueFiltering: false,
enableClickableOptGroups: false,
enableCollapsibleOptGroups: false,
collapseOptGroupsByDefault: false,
filterPlaceholder: 'Search',
// possible options: 'text', 'value', 'both'
filterBehavior: 'text',
includeFilterClearBtn: true,
preventInputChangeEvent: false,
nonSelectedText: 'None selected',
nSelectedText: 'selected',
allSelectedText: 'All selected',
resetButtonText: 'Reset',
numberDisplayed: 3,
disableIfEmpty: false,
disabledText: '',
delimiterText: ', ',
includeResetOption: false,
includeResetDivider: false,
resetText: 'Reset',
indentGroupOptions: true,
// possible options: 'never', 'always', 'ifPopupIsSmaller', 'ifPopupIsWider'
widthSynchronizationMode: 'never',
// possible options: 'left', 'center', 'right'
buttonTextAlignment: 'center',
enableResetButton: false,
templates: {
button: '<button type="button" class="multiselect dropdown-toggle" data-toggle="dropdown"><span class="multiselect-selected-text"></span></button>',
popupContainer: '<div class="multiselect-container dropdown-menu"></div>',
filter: '<div class="multiselect-filter d-flex align-items-center"><i class="fas fa-sm fa-search text-muted"></i><input type="search" class="multiselect-search form-control" /></div>',
buttonGroup: '<div class="multiselect-buttons btn-group" style="display:flex;"></div>',
buttonGroupReset: '<button type="button" class="multiselect-reset btn btn-secondary btn-block"></button>',
option: '<button type="button" class="multiselect-option dropdown-item"></button>',
divider: '<div class="dropdown-divider"></div>',
optionGroup: '<button type="button" class="multiselect-group dropdown-item"></button>',
resetButton: '<div class="multiselect-reset text-center p-2"><button type="button" class="btn btn-sm btn-block btn-outline-secondary"></button></div>'
}
},
constructor: Multiselect,
/**
* Builds the container of the multiselect.
*/
buildContainer: function () {
this.$container = $(this.options.buttonContainer);
if (this.options.widthSynchronizationMode !== 'never') {
this.$container.on('show.bs.dropdown', $.proxy(function () {
// the width needs to be synchronized again in case the width of the button changed in between
this.synchronizeButtonAndPopupWidth();
this.options.onDropdownShow();
}, this));
}
else {
this.$container.on('show.bs.dropdown', this.options.onDropdownShow);
}
this.$container.on('hide.bs.dropdown', this.options.onDropdownHide);
this.$container.on('shown.bs.dropdown', this.options.onDropdownShown);
this.$container.on('hidden.bs.dropdown', this.options.onDropdownHidden);
},
/**
* Builds the button of the multiselect.
*/
buildButton: function () {
this.$button = $(this.options.templates.button).addClass(this.options.buttonClass);
if (this.$select.attr('class') && this.options.inheritClass) {
this.$button.addClass(this.$select.attr('class'));
}
// Adopt active state.
if (this.$select.prop('disabled')) {
this.disable();
}
else {
this.enable();
}
// Manually add button width if set.
if (this.options.buttonWidth && this.options.buttonWidth !== 'auto') {
this.$button.css({
'width': '100%' //this.options.buttonWidth,
});
this.$container.css({
'width': this.options.buttonWidth
});
}
if (this.options.buttonTextAlignment) {
switch (this.options.buttonTextAlignment) {
case 'left':
this.$button.addClass('text-left');
break;
case 'center':
this.$button.addClass('text-center');
break;
case 'right':
this.$button.addClass('text-right');
break;
}
}
// Keep the tab index from the select.
var tabindex = this.$select.attr('tabindex');
if (tabindex) {
this.$button.attr('tabindex', tabindex);
}
this.$container.prepend(this.$button);
},
/**
* Builds the popup container representing the dropdown menu.
*/
buildDropdown: function () {
// Build popup container.
this.$popupContainer = $(this.options.templates.popupContainer);
if (this.options.dropRight) {
this.$container.addClass('dropright');
}
else if (this.options.dropUp) {
this.$container.addClass("dropup");
}
// Set max height of dropdown menu to activate auto scrollbar.
if (this.options.maxHeight) {
// TODO: Add a class for this option to move the css declarations.
this.$popupContainer.css({
'max-height': this.options.maxHeight + 'px',
'overflow-y': 'auto',
'overflow-x': 'hidden'
});
}
if (this.options.widthSynchronizationMode !== 'never') {
this.$popupContainer.css('overflow-x', 'hidden');
}
this.$popupContainer.on("touchstart click", function (e) {
e.stopPropagation();
});
this.$container.append(this.$popupContainer);
},
synchronizeButtonAndPopupWidth: function () {
if (!this.$popupContainer || this.options.widthSynchronizationMode === 'never') {
return;
}
var buttonWidth = this.$button.outerWidth();
switch (this.options.widthSynchronizationMode) {
case 'always':
this.$popupContainer.css('min-width', buttonWidth);
this.$popupContainer.css('max-width', buttonWidth);
break;
case 'ifPopupIsSmaller':
this.$popupContainer.css('min-width', buttonWidth);
break;
case 'ifPopupIsWider':
this.$popupContainer.css('max-width', buttonWidth);
break;
}
},
/**
* Build the dropdown options and binds all necessary events.
*
* Uses createDivider and createOptionValue to create the necessary options.
*/
buildDropdownOptions: function () {
this.$select.children().each($.proxy(function (index, element) {
var $element = $(element);
// Support optgroups and options without a group simultaneously.
var tag = $element.prop('tagName')
.toLowerCase();
if ($element.prop('value') === this.options.selectAllValue) {
return;
}
if (tag === 'optgroup') {
this.createOptgroup(element);
}
else if (tag === 'option') {
if ($element.data('role') === 'divider') {
this.createDivider();
}
else {
this.createOptionValue(element, false);
}
}
// Other illegal tags will be ignored.
}, this));
// Bind the change event on the dropdown elements.
$(this.$popupContainer).off('change', '> *:not(.multiselect-group) input[type="checkbox"], > *:not(.multiselect-group) input[type="radio"]');
$(this.$popupContainer).on('change', '> *:not(.multiselect-group) input[type="checkbox"], > *:not(.multiselect-group) input[type="radio"]', $.proxy(function (event) {
var $target = $(event.target);
var checked = $target.prop('checked') || false;
var isSelectAllOption = $target.val() === this.options.selectAllValue;
// Apply or unapply the configured selected class.
if (this.options.selectedClass) {
if (checked) {
$target.closest('.multiselect-option')
.addClass(this.options.selectedClass);
}
else {
$target.closest('.multiselect-option')
.removeClass(this.options.selectedClass);
}
}
// Get the corresponding option.
var id = $target.attr('id');
var $option = this.getOptionById(id);
var $optionsNotThis = $('option', this.$select).not($option);
var $checkboxesNotThis = $('input', this.$container).not($target);
if (isSelectAllOption) {
if (checked) {
this.selectAll(this.options.selectAllJustVisible, true);
}
else {
this.deselectAll(this.options.selectAllJustVisible, true);
}
}
else {
if (checked) {
$option.prop('selected', true);
if (this.options.multiple) {
// Simply select additional option.
$option.prop('selected', true);
}
else {
// Unselect all other options and corresponding checkboxes.
if (this.options.selectedClass) {
$($checkboxesNotThis).closest('.dropdown-item').removeClass(this.options.selectedClass);
}
$($checkboxesNotThis).prop('checked', false);
$optionsNotThis.prop('selected', false);
// It's a single selection, so close.
this.$button.click();
}
if (this.options.selectedClass === "active") {
$optionsNotThis.closest(".dropdown-item").css("outline", "");
}
}
else {
// Unselect option.
$option.prop('selected', false);
}
// To prevent select all from firing onChange: #575
this.options.onChange($option, checked);
// Do not update select all or optgroups on select all change!
this.updateSelectAll();
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
}
this.$select.change();
this.updateButtonText();
if (this.options.preventInputChangeEvent) {
return false;
}
}, this));
$('.multiselect-option', this.$popupContainer).off('mousedown');
$('.multiselect-option', this.$popupContainer).on('mousedown', function (e) {
if (e.shiftKey) {
// Prevent selecting text by Shift+click
return false;
}
});
$(this.$popupContainer).off('touchstart click', '.multiselect-option, .multiselect-all, .multiselect-group');
$(this.$popupContainer).on('touchstart click', '.multiselect-option, .multiselect-all, .multiselect-group', $.proxy(function (event) {
event.stopPropagation();
var $target = $(event.target);
if (event.shiftKey && this.options.multiple) {
if (!$target.is("input")) { // Handles checkbox selection manually (see https://github.com/davidstutz/bootstrap-multiselect/issues/431)
event.preventDefault();
$target = $target.closest(".multiselect-option").find("input");
$target.prop("checked", !$target.prop("checked"));
}
var checked = $target.prop('checked') || false;
if (this.lastToggledInput !== null && this.lastToggledInput !== $target) { // Make sure we actually have a range
var from = this.$popupContainer.find(".multiselect-option:visible").index($target.closest(".multiselect-option"));
var to = this.$popupContainer.find(".multiselect-option:visible").index(this.lastToggledInput.closest(".multiselect-option"));
if (from > to) { // Swap the indices
var tmp = to;
to = from;
from = tmp;
}
// Make sure we grab all elements since slice excludes the last index
++to;
// Change the checkboxes and underlying options
var range = this.$popupContainer.find(".multiselect-option:not(.multiselect-filter-hidden)").slice(from, to).find("input");
range.prop('checked', checked);
if (this.options.selectedClass) {
range.closest('.multiselect-option')
.toggleClass(this.options.selectedClass, checked);
}
for (var i = 0, j = range.length; i < j; i++) {
var $checkbox = $(range[i]);
var $option = this.getOptionById($checkbox.attr('id'));
$option.prop('selected', checked);
}
}
// Trigger the select "change" event
$target.trigger("change");
}
else if (!$target.is('input')) {
var $checkbox = $target.closest('.multiselect-option, .multiselect-all').find('.form-check-input');
if ($checkbox.length > 0) {
if (this.options.multiple || !$checkbox.prop('checked')) {
$checkbox.prop('checked', !$checkbox.prop('checked'));
$checkbox.change();
}
}
else if (this.options.enableClickableOptGroups && this.options.multiple && !$target.hasClass("caret-container")) {
var groupItem = $target;
if (!groupItem.hasClass("multiselect-group")) {
groupItem = $target.closest('.multiselect-group');
}
$checkbox = groupItem.find(".form-check-input");
if ($checkbox.length > 0) {
$checkbox.prop('checked', !$checkbox.prop('checked'));
$checkbox.change();
}
}
event.preventDefault();
}
// Remembers last clicked option
var $input = $target.closest(".multiselect-option").find("input[type='checkbox'], input[type='radio']");
if ($input.length > 0) {
this.lastToggledInput = $target;
}
else {
this.lastToggledInput = null;
}
$target.blur();
}, this));
//Keyboard support.
this.$container.off('keydown.multiselect').on('keydown.multiselect', $.proxy(function (event) {
var $items = $(this.$container).find(".multiselect-option:not(.disabled), .multiselect-group:not(.disabled), .multiselect-all").filter(":visible");
var index = $items.index($items.filter(':focus'));
var $search = $('.multiselect-search', this.$container);
// keyCode 9 == Tab
if (event.keyCode === 9 && this.$container.hasClass('show')) {
this.$button.click();
}
// keyCode 13 = Enter
else if (event.keyCode == 13) {
var $current = $items.eq(index);
setTimeout(function () {
$current.focus();
}, 1);
}
// keyCode 38 = Arrow Up
else if (event.keyCode == 38) {
if (index == 0 && !$search.is(':focus')) {
setTimeout(function () {
$search.focus();
}, 1);
}
}
// keyCode 40 = Arrow Down
else if (event.keyCode == 40) {
if ($search.is(':focus')) {
var $first = $items.eq(0);
setTimeout(function () {
$search.blur();
$first.focus();
}, 1);
}
else if (index == -1) {
setTimeout(function () {
$search.focus();
}, 1);
}
}
}, this));
if (this.options.enableClickableOptGroups && this.options.multiple) {
$(".multiselect-group input", this.$popupContainer).off("change");
$(".multiselect-group input", this.$popupContainer).on("change", $.proxy(function (event) {
event.stopPropagation();
var $target = $(event.target);
var checked = $target.prop('checked') || false;
var $item = $(event.target).closest('.dropdown-item');
var $group = $item.nextUntil(".multiselect-group")
.not('.multiselect-filter-hidden')
.not('.disabled');
var $inputs = $group.find("input");
var $options = [];
if (this.options.selectedClass) {
if (checked) {
$item.addClass(this.options.selectedClass);
}
else {
$item.removeClass(this.options.selectedClass);
}
}
$.each($inputs, $.proxy(function (index, input) {
var $input = $(input);
var id = $input.attr('id');
var $option = this.getOptionById(id);
if (checked) {
$input.prop('checked', true);
$input.closest('.dropdown-item')
.addClass(this.options.selectedClass);
$option.prop('selected', true);
}
else {
$input.prop('checked', false);
$input.closest('.dropdown-item')
.removeClass(this.options.selectedClass);
$option.prop('selected', false);
}
$options.push($option);
}, this))
// Cannot use select or deselect here because it would call updateOptGroups again.
this.options.onChange($options, checked);
this.$select.change();
this.updateButtonText();
this.updateSelectAll();
}, this));
}
if (this.options.enableCollapsibleOptGroups) {
let clickableSelector = this.options.enableClickableOptGroups
? ".multiselect-group .caret-container"
: ".multiselect-group";
$(clickableSelector, this.$popupContainer).off("click");
$(clickableSelector, this.$popupContainer).on("click", $.proxy(function (event) {
var $group = $(event.target).closest('.multiselect-group');
var $inputs = $group.nextUntil(".multiselect-group").not('.multiselect-filter-hidden');
var visible = true;
$inputs.each(function () {
visible = visible && !$(this).hasClass('multiselect-collapsible-hidden');
});
if (visible) {
$inputs.hide().addClass('multiselect-collapsible-hidden');
$group.get(0).classList.add("closed");
} else {
$inputs.show().removeClass('multiselect-collapsible-hidden');
$group.get(0).classList.remove("closed");
}
}, this));
}
},
/**
* Create a checkbox container with input and label based on given values
* @param {JQuery} $item
* @param {String} label
* @param {String} name
* @param {String} value
* @param {String} inputType
* @returns {JQuery}
*/
createCheckbox: function ($item, labelContent, name, value, title, inputType, internalId) {
var $wrapper = $('<span />');
$wrapper.addClass("form-check");
var $checkboxLabel = $('<label class="form-check-label" />');
if (this.options.enableHTML && $(labelContent).length > 0) {
$checkboxLabel.html(labelContent);
}
else {
$checkboxLabel.text(labelContent);
}
$wrapper.append($checkboxLabel);
var $checkbox = $('<input class="form-check-input"/>').attr('type', inputType);
$checkbox.val(value);
$wrapper.prepend($checkbox);
if (internalId) {
$checkbox.attr('id', internalId);
$checkboxLabel.attr('for', internalId);
}
if (name) {
$checkbox.attr('name', name);
}
$item.prepend($wrapper);
$item.attr("title", title || labelContent);
return $checkbox;
},
/**
* Create an option using the given select option.
*
* @param {jQuery} element
*/
createOptionValue: function (element, isGroupOption) {
var $element = $(element);
if ($element.is(':selected')) {
$element.prop('selected', true);
}
// Support the label attribute on options.
var label = this.options.optionLabel(element);
var classes = this.options.optionClass(element);
var value = $element.val();
var inputType = this.options.multiple ? "checkbox" : "radio";
var title = $element.attr('title');
var $option = $(this.options.templates.option);
$option.addClass(classes);
if (isGroupOption && this.options.indentGroupOptions) {