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/**
* Bootstrap Multiselect (http://davidstutz.de/bootstrap-multiselect/)
*
* Apache License, Version 2.0:
* Copyright (c) 2012 - 2018 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 - 2018 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);
$element.multiselect('rebuild');
}
};
}
function forEach(array, callback) {
for (var index = 0; index < array.length; ++index) {
callback(array[index], index);
}
}
/**
* Constructor to create a new multiselect using the given select.
*
* @param {jQuery} select
* @param {Object} options
* @returns {Multiselect}
*/
function Multiselect(select, options) {
this.$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.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 = $.proxy(this.options.onFiltering, this);
// Build select all if enabled.
this.buildContainer();
this.buildButton();
this.buildDropdown();
this.buildReset();
this.buildSelectAll();
this.buildDropdownOptions();
this.buildFilter();
this.updateButtonText();
this.updateSelectAll(true);
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
this.options.wasDisabled = this.$select.prop('disabled');
if (this.options.disableIfEmpty && $('option', this.$select).length <= 0) {
this.disable();
}
this.$select.wrap('<span class="multiselect-native-select" />').after(this.$container);
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(options, select) {
if (this.disabledText.length > 0
&& (select.prop('disabled') || (options.length == 0 && this.disableIfEmpty))) {
return this.disabledText;
}
else if (options.length === 0) {
return this.nonSelectedText;
}
else if (this.allSelectedText
&& options.length === $('option', $(select)).length
&& $('option', $(select)).length !== 1
&& this.multiple) {
if (this.selectAllNumber) {
return this.allSelectedText + ' (' + options.length + ')';
}
else {
return this.allSelectedText;
}
}
else if (this.numberDisplayed != 0 && options.length > this.numberDisplayed) {
return options.length + ' ' + this.nSelectedText;
}
else {
var selected = '';
var delimiter = this.delimiterText;
options.each(function() {
var label = ($(this).attr('label') !== undefined) ? $(this).attr('label') : $(this).text();
selected += label + delimiter;
});
return selected.substr(0, selected.length - this.delimiterText.length);
}
},
/**
* Updates the title of the button similar to the buttonText function.
*
* @param {jQuery} options
* @param {jQuery} select
* @returns {@exp;selected@call;substr}
*/
buttonTitle: function(options, select) {
if (options.length === 0) {
return this.nonSelectedText;
}
else {
var selected = '';
var delimiter = this.delimiterText;
options.each(function () {
var label = ($(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() {
},
/**
* Triggered on deselect all.
*/
onDeselectAll: function() {
},
/**
* 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: 'btn btn-default',
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: false,
includeSelectAllOption: false,
includeSelectAllIfMoreThan: 0,
selectAllText: ' Select all',
selectAllValue: 'multiselect-all',
selectAllName: false,
selectAllNumber: true,
selectAllJustVisible: true,
enableFiltering: false,
enableCaseInsensitiveFiltering: 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',
numberDisplayed: 3,
disableIfEmpty: false,
disabledText: '',
delimiterText: ', ',
includeResetOption: false,
includeResetDivider: false,
resetText: 'Reset',
templates: {
button: '<button type="button" class="multiselect dropdown-toggle" data-toggle="dropdown"><span class="multiselect-selected-text"></span> <b class="caret"></b></button>',
ul: '<ul class="multiselect-container dropdown-menu"></ul>',
filter: '<li class="multiselect-item multiselect-filter"><div class="input-group"><span class="input-group-addon"><i class="glyphicon glyphicon-search"></i></span><input class="form-control multiselect-search" type="text" /></div></li>',
filterClearBtn: '<span class="input-group-btn"><button class="btn btn-default multiselect-clear-filter" type="button"><i class="glyphicon glyphicon-remove-circle"></i></button></span>',
li: '<li><a tabindex="0"><label></label></a></li>',
divider: '<li class="multiselect-item divider"></li>',
liGroup: '<li class="multiselect-item multiselect-group"><label></label></li>',
resetButton: '<li class="multiselect-reset text-center"><div class="input-group"><a class="btn btn-default btn-block"></a></div></li>'
}
},
constructor: Multiselect,
/**
* Builds the container of the multiselect.
*/
buildContainer: function() {
this.$container = $(this.options.buttonContainer);
this.$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,
'overflow' : 'hidden',
'text-overflow' : 'ellipsis'
});
this.$container.css({
'width': this.options.buttonWidth
});
}
// Keep the tab index from the select.
var tabindex = this.$select.attr('tabindex');
if (tabindex) {
this.$button.attr('tabindex', tabindex);
}
this.$container.prepend(this.$button);
},
/**
* Builds the ul representing the dropdown menu.
*/
buildDropdown: function() {
// Build ul.
this.$ul = $(this.options.templates.ul);
if (this.options.dropRight) {
this.$ul.addClass('pull-right');
}
// 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.$ul.css({
'max-height': this.options.maxHeight + 'px',
'overflow-y': 'auto',
'overflow-x': 'hidden'
});
}
if (this.options.dropUp) {
var height = Math.min(this.options.maxHeight, $('option[data-role!="divider"]', this.$select).length*26 + $('option[data-role="divider"]', this.$select).length*19 + (this.options.includeSelectAllOption ? 26 : 0) + (this.options.enableFiltering || this.options.enableCaseInsensitiveFiltering ? 44 : 0));
var moveCalc = height + 34;
this.$ul.css({
'max-height': height + 'px',
'overflow-y': 'auto',
'overflow-x': 'hidden',
'margin-top': "-" + moveCalc + 'px'
});
}
this.$container.append(this.$ul);
},
/**
* Build the dropdown options and binds all necessary events.
*
* Uses createDivider and createOptionValue to create the necessary options.
*/
buildDropdownOptions: function() {
this.$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);
}
}
// Other illegal tags will be ignored.
}, this));
// Bind the change event on the dropdown elements.
$(this.$ul).off('change', 'li:not(.multiselect-group) input[type="checkbox"], li:not(.multiselect-group) input[type="radio"]');
$(this.$ul).on('change', 'li:not(.multiselect-group) input[type="checkbox"], li: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('li')
.addClass(this.options.selectedClass);
}
else {
$target.closest('li')
.removeClass(this.options.selectedClass);
}
}
// Get the corresponding option.
var value = $target.val();
var $option = this.getOptionByValue(value);
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('li').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("a").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));
$('li a', this.$ul).on('mousedown', function(e) {
if (e.shiftKey) {
// Prevent selecting text by Shift+click
return false;
}
});
$(this.$ul).on('touchstart click', 'li a', $.proxy(function(event) {
event.stopPropagation();
var $target = $(event.target);
if (event.shiftKey && this.options.multiple) {
if($target.is("label")){ // Handles checkbox selection manually (see https://github.com/davidstutz/bootstrap-multiselect/issues/431)
event.preventDefault();
$target = $target.find("input");
$target.prop("checked", !$target.prop("checked"));
}
var checked = $target.prop('checked') || false;
if (this.lastToggledInput !== null && this.lastToggledInput !== $target) { // Make sure we actually have a range
var from = this.$ul.find("li:visible").index($target.parents("li"));
var to = this.$ul.find("li:visible").index(this.lastToggledInput.parents("li"));
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.$ul.find("li").not(".multiselect-filter-hidden").slice(from, to).find("input");
range.prop('checked', checked);
if (this.options.selectedClass) {
range.closest('li')
.toggleClass(this.options.selectedClass, checked);
}
for (var i = 0, j = range.length; i < j; i++) {
var $checkbox = $(range[i]);
var $option = this.getOptionByValue($checkbox.val());
$option.prop('selected', checked);
}
}
// Trigger the select "change" event
$target.trigger("change");
}
// Remembers last clicked option
if($target.is("input") && !$target.closest("li").is(".multiselect-item")){
this.lastToggledInput = $target;
}
$target.blur();
}, this));
// Keyboard support.
this.$container.off('keydown.multiselect').on('keydown.multiselect', $.proxy(function(event) {
if ($('input[type="text"]', this.$container).is(':focus')) {
return;
}
if (event.keyCode === 9 && this.$container.hasClass('open')) {
this.$button.click();
}
else {
var $items = $(this.$container).find("li:not(.divider):not(.disabled) a").filter(":visible");
if (!$items.length) {
return;
}
var index = $items.index($items.filter(':focus'));
// Navigation up.
if (event.keyCode === 38 && index > 0) {
index--;
}
// Navigate down.
else if (event.keyCode === 40 && index < $items.length - 1) {
index++;
}
else if (!~index) {
index = 0;
}
var $current = $items.eq(index);
$current.focus();
if (event.keyCode === 32 || event.keyCode === 13) {
var $checkbox = $current.find('input');
$checkbox.prop("checked", !$checkbox.prop("checked"));
$checkbox.change();
}
event.stopPropagation();
event.preventDefault();
}
}, this));
if (this.options.enableClickableOptGroups && this.options.multiple) {
$("li.multiselect-group input", this.$ul).on("change", $.proxy(function(event) {
event.stopPropagation();
var $target = $(event.target);
var checked = $target.prop('checked') || false;
var $li = $(event.target).closest('li');
var $group = $li.nextUntil("li.multiselect-group")
.not('.multiselect-filter-hidden')
.not('.disabled');
var $inputs = $group.find("input");
var values = [];
var $options = [];
if (this.options.selectedClass) {
if (checked) {
$li.addClass(this.options.selectedClass);
}
else {
$li.removeClass(this.options.selectedClass);
}
}
$.each($inputs, $.proxy(function(index, input) {
var value = $(input).val();
var $option = this.getOptionByValue(value);
if (checked) {
$(input).prop('checked', true);
$(input).closest('li')
.addClass(this.options.selectedClass);
$option.prop('selected', true);
}
else {
$(input).prop('checked', false);
$(input).closest('li')
.removeClass(this.options.selectedClass);
$option.prop('selected', false);
}
$options.push(this.getOptionByValue(value));
}, this))
// Cannot use select or deselect here because it would call updateOptGroups again.
this.options.onChange($options, checked);
this.$select.change();
this.updateButtonText();
this.updateSelectAll();
}, this));
}
if (this.options.enableCollapsibleOptGroups && this.options.multiple) {
$("li.multiselect-group .caret-container", this.$ul).on("click", $.proxy(function(event) {
var $li = $(event.target).closest('li');
var $inputs = $li.nextUntil("li.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');
}
else {
$inputs.show()
.removeClass('multiselect-collapsible-hidden');
}
}, this));
$("li.multiselect-all", this.$ul).css('background', '#f3f3f3').css('border-bottom', '1px solid #eaeaea');
$("li.multiselect-all > a > label.checkbox", this.$ul).css('padding', '3px 20px 3px 35px');
$("li.multiselect-group > a > input", this.$ul).css('margin', '4px 0px 5px -20px');
}
},
/**
* Create an option using the given select option.
*
* @param {jQuery} element
*/
createOptionValue: function(element) {
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 $li = $(this.options.templates.li);
var $label = $('label', $li);
$label.addClass(inputType);
$label.attr("title", label);
$li.addClass(classes);
// Hide all children items when collapseOptGroupsByDefault is true
if (this.options.collapseOptGroupsByDefault && $(element).parent().prop("tagName").toLowerCase() === "optgroup") {
$li.addClass("multiselect-collapsible-hidden");
$li.hide();
}
if (this.options.enableHTML) {
$label.html(" " + label);
}
else {
$label.text(" " + label);
}
var $checkbox = $('<input/>').attr('type', inputType);
var name = this.options.checkboxName($element);
if (name) {
$checkbox.attr('name', name);
}
$label.prepend($checkbox);
var selected = $element.prop('selected') || false;
$checkbox.val(value);
if (value === this.options.selectAllValue) {
$li.addClass("multiselect-item multiselect-all");
$checkbox.parent().parent()
.addClass('multiselect-all');
}
$label.attr('title', $element.attr('title'));
this.$ul.append($li);
if ($element.is(':disabled')) {
$checkbox.attr('disabled', 'disabled')
.prop('disabled', true)
.closest('a')
.attr("tabindex", "-1")
.closest('li')
.addClass('disabled');
}
$checkbox.prop('checked', selected);
if (selected && this.options.selectedClass) {
$checkbox.closest('li')
.addClass(this.options.selectedClass);
}
},
/**
* Creates a divider using the given select option.
*
* @param {jQuery} element
*/
createDivider: function(element) {
var $divider = $(this.options.templates.divider);
this.$ul.append($divider);
},
/**
* Creates an optgroup.
*
* @param {jQuery} group
*/
createOptgroup: function(group) {
var label = $(group).attr("label");
var value = $(group).attr("value");
var $li = $('<li class="multiselect-item multiselect-group"><a href="javascript:void(0);"><label><b></b></label></a></li>');
var classes = this.options.optionClass(group);
$li.addClass(classes);
if (this.options.enableHTML) {
$('label b', $li).html(" " + label);
}
else {
$('label b', $li).text(" " + label);
}
if (this.options.enableCollapsibleOptGroups && this.options.multiple) {
$('a', $li).append('<span class="caret-container"><b class="caret"></b></span>');
}
if (this.options.enableClickableOptGroups && this.options.multiple) {
$('a label', $li).prepend('<input type="checkbox" value="' + value + '"/>');
}
if ($(group).is(':disabled')) {
$li.addClass('disabled');
}
this.$ul.append($li);
$("option", group).each($.proxy(function($, group) {
this.createOptionValue(group);
}, this))
},
/**
* Build the reset.
*
*/
buildReset: function() {
if (this.options.includeResetOption) {
// Check whether to add a divider after the reset.
if (this.options.includeResetDivider) {
this.$ul.prepend($(this.options.templates.divider));
}
var $resetButton = $(this.options.templates.resetButton);
if (this.options.enableHTML) {
$('a', $resetButton).html(this.options.resetText);
}
else {
$('a', $resetButton).text(this.options.resetText);
}
$('a', $resetButton).click($.proxy(function(){
this.clearSelection();
}, this));
this.$ul.prepend($resetButton);
}
},
/**
* Build the select all.
*
* Checks if a select all has already been created.
*/
buildSelectAll: function() {
if (typeof this.options.selectAllValue === 'number') {
this.options.selectAllValue = this.options.selectAllValue.toString();
}
var alreadyHasSelectAll = this.hasSelectAll();
if (!alreadyHasSelectAll && this.options.includeSelectAllOption && this.options.multiple
&& $('option', this.$select).length > this.options.includeSelectAllIfMoreThan) {
// Check whether to add a divider after the select all.
if (this.options.includeSelectAllDivider) {
this.$ul.prepend($(this.options.templates.divider));
}
var $li = $(this.options.templates.li);
$('label', $li).addClass("checkbox");
if (this.options.enableHTML) {
$('label', $li).html(" " + this.options.selectAllText);
}
else {
$('label', $li).text(" " + this.options.selectAllText);
}
if (this.options.selectAllName) {
$('label', $li).prepend('<input type="checkbox" name="' + this.options.selectAllName + '" />');
}
else {
$('label', $li).prepend('<input type="checkbox" />');
}
var $checkbox = $('input', $li);
$checkbox.val(this.options.selectAllValue);
$li.addClass("multiselect-item multiselect-all");
$checkbox.parent().parent()
.addClass('multiselect-all');
this.$ul.prepend($li);
$checkbox.prop('checked', false);
}
},
/**
* Builds the filter.
*/
buildFilter: function() {
// Build filter if filtering OR case insensitive filtering is enabled and the number of options exceeds (or equals) enableFilterLength.
if (this.options.enableFiltering || this.options.enableCaseInsensitiveFiltering) {
var enableFilterLength = Math.max(this.options.enableFiltering, this.options.enableCaseInsensitiveFiltering);
if (this.$select.find('option').length >= enableFilterLength) {
this.$filter = $(this.options.templates.filter);
$('input', this.$filter).attr('placeholder', this.options.filterPlaceholder);
// Adds optional filter clear button
if(this.options.includeFilterClearBtn) {
var clearBtn = $(this.options.templates.filterClearBtn);
clearBtn.on('click', $.proxy(function(event){
clearTimeout(this.searchTimeout);
this.query = '';
this.$filter.find('.multiselect-search').val('');
$('li', this.$ul).show().removeClass('multiselect-filter-hidden');
this.updateSelectAll();
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
}, this));
this.$filter.find('.input-group').append(clearBtn);
}
this.$ul.prepend(this.$filter);
this.$filter.val(this.query).on('click', function(event) {
event.stopPropagation();
}).on('input keydown', $.proxy(function(event) {
// Cancel enter key default behaviour
if (event.which === 13) {
event.preventDefault();
}
// This is useful to catch "keydown" events after the browser has updated the control.
clearTimeout(this.searchTimeout);
this.searchTimeout = this.asyncFunction($.proxy(function() {
if (this.query !== event.target.value) {
this.query = event.target.value;
var currentGroup, currentGroupVisible;
$.each($('li', this.$ul), $.proxy(function(index, element) {
var value = $('input', element).length > 0 ? $('input', element).val() : "";
var text = $('label', element).text();
var filterCandidate = '';
if ((this.options.filterBehavior === 'text')) {
filterCandidate = text;
}
else if ((this.options.filterBehavior === 'value')) {
filterCandidate = value;
}
else if (this.options.filterBehavior === 'both') {
filterCandidate = text + '\n' + value;
}
if (value !== this.options.selectAllValue && text) {
// By default lets assume that element is not
// interesting for this search.
var showElement = false;
if (this.options.enableCaseInsensitiveFiltering) {
filterCandidate = filterCandidate.toLowerCase();
this.query = this.query.toLowerCase();
}
if (this.options.enableFullValueFiltering && this.options.filterBehavior !== 'both') {
var valueToMatch = filterCandidate.trim().substring(0, this.query.length);
if (this.query.indexOf(valueToMatch) > -1) {
showElement = true;
}
}
else if (filterCandidate.indexOf(this.query) > -1) {
showElement = true;
}
// Toggle current element (group or group item) according to showElement boolean.
if(!showElement){
$(element).css('display', 'none');
$(element).addClass('multiselect-filter-hidden');
}
if(showElement){
$(element).css('display', 'block');
$(element).removeClass('multiselect-filter-hidden');
}
// Differentiate groups and group items.
if ($(element).hasClass('multiselect-group')) {
// Remember group status.
currentGroup = element;
currentGroupVisible = showElement;
}
else {
// Show group name when at least one of its items is visible.
if (showElement) {
$(currentGroup).show()
.removeClass('multiselect-filter-hidden');
}
// Show all group items when group name satisfies filter.
if (!showElement && currentGroupVisible) {
$(element).show()
.removeClass('multiselect-filter-hidden');
}
}
}
}, this));
}
this.updateSelectAll();
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
this.options.onFiltering(event.target);
}, this), 300, this);
}, this));
}
}
},
/**
* Unbinds the whole plugin.
*/
destroy: function() {
this.$container.remove();
this.$select.show();
// reset original state
this.$select.prop('disabled', this.options.wasDisabled);
this.$select.data('multiselect', null);
},
/**
* Refreshs the multiselect based on the selected options of the select.
*/
refresh: function () {
var inputs = {};
$('li input', this.$ul).each(function() {
inputs[$(this).val()] = $(this);
});
$('option', this.$select).each($.proxy(function (index, element) {
var $elem = $(element);
var $input = inputs[$(element).val()];
if ($elem.is(':selected')) {
$input.prop('checked', true);
if (this.options.selectedClass) {
$input.closest('li')
.addClass(this.options.selectedClass);
}
}
else {
$input.prop('checked', false);
if (this.options.selectedClass) {
$input.closest('li')
.removeClass(this.options.selectedClass);
}
}
if ($elem.is(":disabled")) {
$input.attr('disabled', 'disabled')
.prop('disabled', true)
.closest('li')
.addClass('disabled');
}
else {
$input.prop('disabled', false)
.closest('li')
.removeClass('disabled');
}
}, this));
this.updateButtonText();
this.updateSelectAll();
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
},
/**
* Select all options of the given values.
*
* If triggerOnChange is set to true, the on change event is triggered if
* and only if one value is passed.
*
* @param {Array} selectValues
* @param {Boolean} triggerOnChange
*/
select: function(selectValues, triggerOnChange) {
if(!$.isArray(selectValues)) {
selectValues = [selectValues];
}
for (var i = 0; i < selectValues.length; i++) {
var value = selectValues[i];
if (value === null || value === undefined) {
continue;
}
var $option = this.getOptionByValue(value);
var $checkbox = this.getInputByValue(value);
if($option === undefined || $checkbox === undefined) {
continue;
}
if (!this.options.multiple) {
this.deselectAll(false);
}
if (this.options.selectedClass) {
$checkbox.closest('li')
.addClass(this.options.selectedClass);
}
$checkbox.prop('checked', true);
$option.prop('selected', true);
if (triggerOnChange) {
this.options.onChange($option, true);
}
}
this.updateButtonText();
this.updateSelectAll();
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
},
/**
* Clears all selected items.
*/
clearSelection: function () {
this.deselectAll(false);
this.updateButtonText();
this.updateSelectAll();
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
},
/**
* Deselects all options of the given values.
*
* If triggerOnChange is set to true, the on change event is triggered, if
* and only if one value is passed.
*
* @param {Array} deselectValues
* @param {Boolean} triggerOnChange
*/
deselect: function(deselectValues, triggerOnChange) {
if(!$.isArray(deselectValues)) {
deselectValues = [deselectValues];
}
for (var i = 0; i < deselectValues.length; i++) {
var value = deselectValues[i];
if (value === null || value === undefined) {
continue;
}
var $option = this.getOptionByValue(value);
var $checkbox = this.getInputByValue(value);
if($option === undefined || $checkbox === undefined) {
continue;
}
if (this.options.selectedClass) {
$checkbox.closest('li')
.removeClass(this.options.selectedClass);
}
$checkbox.prop('checked', false);
$option.prop('selected', false);
if (triggerOnChange) {
this.options.onChange($option, false);
}
}
this.updateButtonText();
this.updateSelectAll();
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
},
/**
* Selects all enabled & visible options.
*
* If justVisible is true or not specified, only visible options are selected.
*
* @param {Boolean} justVisible
* @param {Boolean} triggerOnSelectAll
*/
selectAll: function (justVisible, triggerOnSelectAll) {
var justVisible = typeof justVisible === 'undefined' ? true : justVisible;
var allLis = $("li:not(.divider):not(.disabled):not(.multiselect-group)", this.$ul);
var visibleLis = $("li:not(.divider):not(.disabled):not(.multiselect-group):not(.multiselect-filter-hidden):not(.multiselect-collapisble-hidden)", this.$ul).filter(':visible');
if(justVisible) {
$('input:enabled' , visibleLis).prop('checked', true);
visibleLis.addClass(this.options.selectedClass);
$('input:enabled' , visibleLis).each($.proxy(function(index, element) {
var value = $(element).val();
var option = this.getOptionByValue(value);
$(option).prop('selected', true);
}, this));
}
else {
$('input:enabled' , allLis).prop('checked', true);
allLis.addClass(this.options.selectedClass);
$('input:enabled' , allLis).each($.proxy(function(index, element) {
var value = $(element).val();
var option = this.getOptionByValue(value);
$(option).prop('selected', true);
}, this));
}
$('li input[value="' + this.options.selectAllValue + '"]', this.$ul).prop('checked', true);
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
if (triggerOnSelectAll) {
this.options.onSelectAll();
}
},
/**
* Deselects all options.
*
* If justVisible is true or not specified, only visible options are deselected.
*
* @param {Boolean} justVisible
*/
deselectAll: function (justVisible, triggerOnDeselectAll) {
var justVisible = typeof justVisible === 'undefined' ? true : justVisible;
var allLis = $("li:not(.divider):not(.disabled):not(.multiselect-group)", this.$ul);
var visibleLis = $("li:not(.divider):not(.disabled):not(.multiselect-group):not(.multiselect-filter-hidden):not(.multiselect-collapisble-hidden)", this.$ul).filter(':visible');
if(justVisible) {
$('input[type="checkbox"]:enabled' , visibleLis).prop('checked', false);
visibleLis.removeClass(this.options.selectedClass);
$('input[type="checkbox"]:enabled' , visibleLis).each($.proxy(function(index, element) {
var value = $(element).val();
var option = this.getOptionByValue(value);
$(option).prop('selected', false);
}, this));
}
else {
$('input[type="checkbox"]:enabled' , allLis).prop('checked', false);
allLis.removeClass(this.options.selectedClass);
$('input[type="checkbox"]:enabled' , allLis).each($.proxy(function(index, element) {
var value = $(element).val();
var option = this.getOptionByValue(value);
$(option).prop('selected', false);
}, this));
}
$('li input[value="' + this.options.selectAllValue + '"]', this.$ul).prop('checked', false);
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
if (triggerOnDeselectAll) {
this.options.onDeselectAll();
}
},
/**
* Rebuild the plugin.
*
* Rebuilds the dropdown, the filter and the select all option.
*/
rebuild: function() {
this.$ul.html('');
// Important to distinguish between radios and checkboxes.
this.options.multiple = this.$select.attr('multiple') === "multiple";
this.buildSelectAll();
this.buildDropdownOptions();
this.buildFilter();
this.updateButtonText();
this.updateSelectAll(true);
if (this.options.enableClickableOptGroups && this.options.multiple) {
this.updateOptGroups();
}
if (this.options.disableIfEmpty && $('option', this.$select).length <= 0) {
this.disable();
}
else {
this.enable();
}
if (this.options.dropRight) {
this.$ul.addClass('pull-right');
}
},
/**
* The provided data will be used to build the dropdown.
*/
dataprovider: function(dataprovider) {
var groupCounter = 0;
var $select = this.$select.empty();
$.each(dataprovider, function (index, option) {
var $tag;
if ($.isArray(option.children)) { // create optiongroup tag
groupCounter++;
$tag = $('<optgroup/>').attr({
label: option.label || 'Group ' + groupCounter,
disabled: !!option.disabled,
value: option.value
});
forEach(option.children, function(subOption) { // add children option tags
var attributes = {
value: subOption.value,
label: subOption.label || subOption.value,
title: subOption.title,
selected: !!subOption.selected,
disabled: !!subOption.disabled
};
//Loop through attributes object and add key-value for each attribute
for (var key in subOption.attributes) {
attributes['data-' + key] = subOption.attributes[key];
}
//Append original attributes + new data attributes to option
$tag.append($('<option/>').attr(attributes));
});
}
else {
var attributes = {
'value': option.value,
'label': option.label || option.value,
'title': option.title,
'class': option['class'],
'selected': !!option['selected'],
'disabled': !!option['disabled']
};
//Loop through attributes object and add key-value for each attribute
for (var key in option.attributes) {
attributes['data-' + key] = option.attributes[key];
}
//Append original attributes + new data attributes to option
$tag = $('<option/>').attr(attributes);
$tag.text(option.label || option.value);
}
$select.append($tag);
});
this.rebuild();
},
/**
* Enable the multiselect.
*/
enable: function() {
this.$select.prop('disabled', false);
this.$button.prop('disabled', false)
.removeClass('disabled');
},
/**
* Disable the multiselect.
*/
disable: function() {
this.$select.prop('disabled', true);
this.$button.prop('disabled', true)
.addClass('disabled');
},
/**
* Set the options.
*
* @param {Array} options
*/
setOptions: function(options) {
this.options = this.mergeOptions(options);
},
/**
* Merges the given options with the default options.
*
* @param {Array} options
* @returns {Array}
*/
mergeOptions: function(options) {
return $.extend(true, {}, this.defaults, this.options, options);
},
/**
* Checks whether a select all checkbox is present.
*
* @returns {Boolean}
*/
hasSelectAll: function() {
return $('li.multiselect-all', this.$ul).length > 0;
},
/**
* Update opt groups.
*/
updateOptGroups: function() {
var $groups = $('li.multiselect-group', this.$ul)
var selectedClass = this.options.selectedClass;
$groups.each(function() {
var $options = $(this).nextUntil('li.multiselect-group')
.not('.multiselect-filter-hidden')
.not('.disabled');
var checked = true;
$options.each(function() {
var $input = $('input', this);
if (!$input.prop('checked')) {
checked = false;
}
});
if (selectedClass) {
if (checked) {
$(this).addClass(selectedClass);
}
else {
$(this).removeClass(selectedClass);
}
}
$('input', this).prop('checked', checked);
});
},
/**
* Updates the select all checkbox based on the currently displayed and selected checkboxes.
*/
updateSelectAll: function(notTriggerOnSelectAll) {
if (this.hasSelectAll()) {
var allBoxes = $("li:not(.multiselect-item):not(.multiselect-filter-hidden):not(.multiselect-group):not(.disabled) input:enabled", this.$ul);
var allBoxesLength = allBoxes.length;
var checkedBoxesLength = allBoxes.filter(":checked").length;
var selectAllLi = $("li.multiselect-all", this.$ul);
var selectAllInput = selectAllLi.find("input");
if (checkedBoxesLength > 0 && checkedBoxesLength === allBoxesLength) {
selectAllInput.prop("checked", true);
selectAllLi.addClass(this.options.selectedClass);
}
else {
selectAllInput.prop("checked", false);
selectAllLi.removeClass(this.options.selectedClass);
}
}
},
/**
* Update the button text and its title based on the currently selected options.
*/
updateButtonText: function() {
var options = this.getSelected();
// First update the displayed button text.
if (this.options.enableHTML) {
$('.multiselect .multiselect-selected-text', this.$container).html(this.options.buttonText(options, this.$select));
}
else {
$('.multiselect .multiselect-selected-text', this.$container).text(this.options.buttonText(options, this.$select));
}
// Now update the title attribute of the button.
$('.multiselect', this.$container).attr('title', this.options.buttonTitle(options, this.$select));
},
/**
* Get all selected options.
*
* @returns {jQUery}
*/
getSelected: function() {
return $('option', this.$select).filter(":selected");
},
/**
* Gets a select option by its value.
*
* @param {String} value
* @returns {jQuery}
*/
getOptionByValue: function (value) {
var options = $('option', this.$select);
var valueToCompare = value.toString();
for (var i = 0; i < options.length; i = i + 1) {
var option = options[i];
if (option.value === valueToCompare) {
return $(option);
}
}
},
/**
* Get the input (radio/checkbox) by its value.
*
* @param {String} value
* @returns {jQuery}
*/
getInputByValue: function (value) {
var checkboxes = $('li input:not(.multiselect-search)', this.$ul);
var valueToCompare = value.toString();
for (var i = 0; i < checkboxes.length; i = i + 1) {
var checkbox = checkboxes[i];
if (checkbox.value === valueToCompare) {
return $(checkbox);
}
}
},
/**
* Used for knockout integration.
*/
updateOriginalOptions: function() {
this.originalOptions = this.$select.clone()[0].options;
},
asyncFunction: function(callback, timeout, self) {
var args = Array.prototype.slice.call(arguments, 3);
return setTimeout(function() {
callback.apply(self || window, args);
}, timeout);
},
setAllSelectedText: function(allSelectedText) {
this.options.allSelectedText = allSelectedText;
this.updateButtonText();
}
};
$.fn.multiselect = function(option, parameter, extraOptions) {
return this.each(function() {
var data = $(this).data('multiselect');
var options = typeof option === 'object' && option;
// Initialize the multiselect.
if (!data) {
data = new Multiselect(this, options);
$(this).data('multiselect', data);
}
// Call multiselect method.
if (typeof option === 'string') {
data[option](parameter, extraOptions);
if (option === 'destroy') {
$(this).data('multiselect', false);
}
}
});
};
$.fn.multiselect.Constructor = Multiselect;
$(function() {
$("select[data-role=multiselect]").multiselect();
});
});
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