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| Viewing file: Select action/file-type: /**
* bootstrap-multiselect.js
* https://github.com/davidstutz/bootstrap-multiselect
*
* Copyright 2012 - 2014 David Stutz
*
* Dual licensed under the BSD-3-Clause and the Apache License, Version 2.0.
*/
!function($) {
"use strict";// jshint ;_;
if (typeof ko !== 'undefined' && ko.bindingHandlers && !ko.bindingHandlers.multiselect) {
ko.bindingHandlers.multiselect = {
init: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
var listOfSelectedItems = allBindingsAccessor().selectedOptions,
config = ko.utils.unwrapObservable(valueAccessor());
$(element).multiselect(config);
if (isObservableArray(listOfSelectedItems)) {
// Subscribe to the selectedOptions: ko.observableArray
listOfSelectedItems.subscribe(function (changes) {
var addedArray = [], deletedArray = [];
changes.forEach(function (change) {
switch (change.status) {
case 'added':
addedArray.push(change.value);
break;
case 'deleted':
deletedArray.push(change.value);
break;
}
});
if (addedArray.length > 0) {
$(element).multiselect('select', addedArray);
};
if (deletedArray.length > 0) {
$(element).multiselect('deselect', deletedArray);
};
}, null, "arrayChange");
}
},
update: function (element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {
var listOfItems = allBindingsAccessor().options,
ms = $(element).data('multiselect'),
config = ko.utils.unwrapObservable(valueAccessor());
if (isObservableArray(listOfItems)) {
// Subscribe to the options: ko.observableArray incase it changes later
listOfItems.subscribe(function (theArray) {
$(element).multiselect('rebuild');
});
}
if (!ms) {
$(element).multiselect(config);
}
else {
ms.updateOriginalOptions();
}
}
};
}
function isObservableArray(obj) {
return ko.isObservable(obj) && !(obj.destroyAll === undefined);
}
/**
* Constructor to create a new multiselect using the given select.
*
* @param {jQuery} select
* @param {Object} options
* @returns {Multiselect}
*/
function Multiselect(select, options) {
this.options = this.mergeOptions(options);
this.$select = $(select);
// Initialization.
// We have to clone to create a new reference.
this.originalOptions = this.$select.clone()[0].options;
this.query = '';
this.searchTimeout = null;
this.options.multiple = this.$select.attr('multiple') === "multiple";
this.options.onChange = $.proxy(this.options.onChange, this);
this.options.onDropdownShow = $.proxy(this.options.onDropdownShow, this);
this.options.onDropdownHide = $.proxy(this.options.onDropdownHide, this);
// Build select all if enabled.
this.buildContainer();
this.buildButton();
this.buildSelectAll();
this.buildDropdown();
this.buildDropdownOptions();
this.buildFilter();
this.updateButtonText();
this.updateSelectAll();
this.$select.hide().after(this.$container);
};
Multiselect.prototype = {
defaults: {
/**
* Default text function will either print 'None selected' in case no
* option is selected or a list of the selected options up to a length of 3 selected options.
*
* @param {jQuery} options
* @param {jQuery} select
* @returns {String}
*/
buttonText: function(options, select) {
if (options.length === 0) {
return this.nonSelectedText + ' <b class="caret"></b>';
}
else {
if (options.length > this.numberDisplayed) {
return options.length + ' ' + this.nSelectedText + ' <b class="caret"></b>';
}
else {
var selected = '';
options.each(function() {
var label = ($(this).attr('label') !== undefined) ? $(this).attr('label') : $(this).html();
selected += label + ', ';
});
return selected.substr(0, selected.length - 2) + ' <b class="caret"></b>';
}
}
},
/**
* 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 = '';
options.each(function () {
selected += $(this).text() + ', ';
});
return selected.substr(0, selected.length - 2);
}
},
/**
* Create a label.
*
* @param {jQuery} element
* @returns {String}
*/
label: function(element){
return $(element).attr('label') || $(element).html();
},
/**
* Triggered on change of the multiselect.
* Not triggered when selecting/deselecting options manually.
*
* @param {jQuery} option
* @param {Boolean} checked
*/
onChange : function(option, checked) {
},
/**
* Triggered when the dropdown is shown.
*
* @param {jQuery} event
*/
onDropdownShow: function(event) {
},
/**
* Triggered when the dropdown is hidden.
*
* @param {jQuery} event
*/
onDropdownHide: function(event) {
},
buttonClass: 'btn btn-default',
dropRight: false,
selectedClass: 'active',
buttonWidth: 'auto',
buttonContainer: '<div class="btn-group" />',
// Maximum height of the dropdown menu.
// If maximum height is exceeded a scrollbar will be displayed.
maxHeight: false,
checkboxName: 'multiselect',
includeSelectAllOption: false,
includeSelectAllIfMoreThan: 0,
selectAllText: ' Select all',
selectAllValue: 'multiselect-all',
enableFiltering: false,
enableCaseInsensitiveFiltering: false,
filterPlaceholder: 'Search',
// possible options: 'text', 'value', 'both'
filterBehavior: 'text',
preventInputChangeEvent: false,
nonSelectedText: 'None selected',
nSelectedText: 'selected',
numberDisplayed: 3,
templates: {
button: '<button type="button" class="multiselect dropdown-toggle" data-toggle="dropdown"></button>',
ul: '<ul class="multiselect-container dropdown-menu"></ul>',
filter: '<div class="input-group"><span class="input-group-addon"><i class="glyphicon glyphicon-search"></i></span><input class="form-control multiselect-search" type="text"></div>',
li: '<li><a href="javascript:void(0);"><label></label></a></li>',
divider: '<li class="divider"></li>',
liGroup: '<li><label class="multiselect-group"></label></li>'
}
},
constructor: Multiselect,
/**
* Builds the container of the multiselect.
*/
buildContainer: function() {
this.$container = $(this.options.buttonContainer);
this.$container.on('show.bs.dropdown', this.options.onDropdownShow);
this.$container.on('hide.bs.dropdown', this.options.onDropdownHide);
},
/**
* Builds the button of the multiselect.
*/
buildButton: function() {
this.$button = $(this.options.templates.button).addClass(this.options.buttonClass);
// Adopt active state.
if (this.$select.prop('disabled')) {
this.disable();
}
else {
this.enable();
}
// Manually add button width if set.
if (this.options.buttonWidth && this.options.buttonWidth !== 'auto') {
this.$button.css({
'width' : this.options.buttonWidth
});
}
// Keep the tab index from the select.
var tabindex = this.$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.$ul.css({
'max-height': this.options.maxHeight + 'px',
'overflow-y': 'auto',
'overflow-x': 'hidden'
});
}
this.$container.append(this.$ul);
},
/**
* Build the dropdown options and binds all nessecary events.
* Uses createDivider and createOptionValue to create the necessary options.
*/
buildDropdownOptions: function() {
this.$select.children().each($.proxy(function(index, element) {
// Support optgroups and options without a group simultaneously.
var tag = $(element).prop('tagName')
.toLowerCase();
if (tag === 'optgroup') {
this.createOptgroup(element);
}
else if (tag === 'option') {
if ($(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.
$('li input', this.$ul).on('change', $.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.parents('li')
.addClass(this.options.selectedClass);
}
else {
$target.parents('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) {
var values = [];
// Select the visible checkboxes except the "select-all" and possible divider.
var availableInputs = $('li input[value!="' + this.options.selectAllValue + '"][data-role!="divider"]', this.$ul).filter(':visible');
for (var i = 0, j = availableInputs.length; i < j; i++) {
values.push(availableInputs[i].value);
}
if (checked) {
this.select(values);
}
else {
this.deselect(values);
}
}
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).parents('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.parents("a").css("outline", "");
}
}
else {
// Unselect option.
$option.prop('selected', false);
}
this.$select.change();
this.options.onChange($option, checked);
this.updateButtonText();
this.updateSelectAll();
if(this.options.preventInputChangeEvent) {
return false;
}
}, this));
$('li a', this.$ul).on('touchstart click', function(event) {
event.stopPropagation();
var $target = $(event.target);
if (event.shiftKey) {
var checked = $target.prop('checked') || false;
if (checked) {
var prev = $target.parents('li:last')
.siblings('li[class="active"]:first');
var currentIdx = $target.parents('li')
.index();
var prevIdx = prev.index();
if (currentIdx > prevIdx) {
$target.parents("li:last").prevUntil(prev).each(
function() {
$(this).find("input:first").prop("checked", true)
.trigger("change");
}
);
}
else {
$target.parents("li:last").nextUntil(prev).each(
function() {
$(this).find("input:first").prop("checked", true)
.trigger("change");
}
);
}
}
}
$target.blur();
});
// Keyboard support.
this.$container.on('keydown', $.proxy(function(event) {
if ($('input[type="text"]', this.$container).is(':focus')) {
return;
}
if ((event.keyCode === 9 || event.keyCode === 27)
&& this.$container.hasClass('open')) {
// Close on tab or escape.
this.$button.click();
}
else {
var $items = $(this.$container).find("li:not(.divider):visible a");
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"));
$checkbox.change();
}
event.stopPropagation();
event.preventDefault();
}
}, this));
},
/**
* Create an option using the given select option.
*
* @param {jQuery} element
*/
createOptionValue: function(element) {
if ($(element).is(':selected')) {
$(element).prop('selected', true);
}
// Support the label attribute on options.
var label = this.options.label(element);
var value = $(element).val();
var inputType = this.options.multiple ? "checkbox" : "radio";
var $li = $(this.options.templates.li);
$('label', $li).addClass(inputType);
$('label', $li).append('<input type="' + inputType + '" name="' + this.options.checkboxName + '" />');
var selected = $(element).prop('selected') || false;
var $checkbox = $('input', $li);
$checkbox.val(value);
if (value === this.options.selectAllValue) {
$checkbox.parent().parent()
.addClass('multiselect-all');
}
$('label', $li).append(" " + label);
this.$ul.append($li);
if ($(element).is(':disabled')) {
$checkbox.attr('disabled', 'disabled')
.prop('disabled', true)
.parents('li')
.addClass('disabled');
}
$checkbox.prop('checked', selected);
if (selected && this.options.selectedClass) {
$checkbox.parents('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 groupName = $(group).prop('label');
// Add a header for the group.
var $li = $(this.options.templates.liGroup);
$('label', $li).text(groupName);
this.$ul.append($li);
if ($(group).is(':disabled')) {
$li.addClass('disabled');
}
// Add the options of the group.
$('option', group).each($.proxy(function(index, element) {
this.createOptionValue(element);
}, this));
},
/**
* Build the selct all.
* Checks if a select all ahs already been created.
*/
buildSelectAll: function() {
var alreadyHasSelectAll = this.hasSelectAll();
if (!alreadyHasSelectAll && this.options.includeSelectAllOption && this.options.multiple
&& $('option[data-role!="divider"]', this.$select).length > this.options.includeSelectAllIfMoreThan) {
// Check whether to add a divider after the select all.
if (this.options.includeSelectAllDivider) {
this.$select.prepend('<option value="" disabled="disabled" data-role="divider">');
}
this.$select.prepend('<option value="' + this.options.selectAllValue + '">' + this.options.selectAllText + '</option>');
}
},
/**
* 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);
this.$ul.prepend(this.$filter);
this.$filter.val(this.query).on('click', function(event) {
event.stopPropagation();
}).on('input keydown', $.proxy(function(event) {
// This is useful to catch "keydown" events after the browser has updated the control.
clearTimeout(this.searchTimeout);
this.searchTimeout = this.asyncFunction($.proxy(function() {
if (this.query !== event.target.value) {
this.query = event.target.value;
$.each($('li', this.$ul), $.proxy(function(index, element) {
var value = $('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.toLowerCase().indexOf(this.query.toLowerCase()) > -1) {
showElement = true;
}
else if (filterCandidate.indexOf(this.query) > -1) {
showElement = true;
}
if (showElement) {
$(element).show();
}
else {
$(element).hide();
}
}
}, this));
}
// TODO: check whether select all option needs to be updated.
}, this), 300, this);
}, this));
}
}
},
/**
* Unbinds the whole plugin.
*/
destroy: function() {
this.$container.remove();
this.$select.show();
this.$select.data('multiselect', null);
},
/**
* Refreshs the multiselect based on the selected options of the select.
*/
refresh: function() {
$('option', this.$select).each($.proxy(function(index, element) {
var $input = $('li input', this.$ul).filter(function() {
return $(this).val() === $(element).val();
});
if ($(element).is(':selected')) {
$input.prop('checked', true);
if (this.options.selectedClass) {
$input.parents('li')
.addClass(this.options.selectedClass);
}
}
else {
$input.prop('checked', false);
if (this.options.selectedClass) {
$input.parents('li')
.removeClass(this.options.selectedClass);
}
}
if ($(element).is(":disabled")) {
$input.attr('disabled', 'disabled')
.prop('disabled', true)
.parents('li')
.addClass('disabled');
}
else {
$input.prop('disabled', false)
.parents('li')
.removeClass('disabled');
}
}, this));
this.updateButtonText();
this.updateSelectAll();
},
/**
* Select all options of the given values.
*
* @param {Array} selectValues
*/
select: function(selectValues) {
if(!$.isArray(selectValues)) {
selectValues = [selectValues];
}
for (var i = 0; i < selectValues.length; i++) {
var value = selectValues[i];
var $option = this.getOptionByValue(value);
var $checkbox = this.getInputByValue(value);
if (this.options.selectedClass) {
$checkbox.parents('li')
.addClass(this.options.selectedClass);
}
$checkbox.prop('checked', true);
$option.prop('selected', true);
}
this.updateButtonText();
},
/**
* Clears all selected items
*
*/
clearSelection: function () {
var selected = this.getSelected();
if (selected.length) {
var arry = [];
for (var i = 0; i < selected.length; i = i + 1) {
arry.push(selected[i].value);
}
this.deselect(arry);
this.$select.change();
}
},
/**
* Deselects all options of the given values.
*
* @param {Array} deselectValues
*/
deselect: function(deselectValues) {
if(!$.isArray(deselectValues)) {
deselectValues = [deselectValues];
}
for (var i = 0; i < deselectValues.length; i++) {
var value = deselectValues[i];
var $option = this.getOptionByValue(value);
var $checkbox = this.getInputByValue(value);
if (this.options.selectedClass) {
$checkbox.parents('li')
.removeClass(this.options.selectedClass);
}
$checkbox.prop('checked', false);
$option.prop('selected', false);
}
this.updateButtonText();
},
/**
* Rebuild the plugin.
* Rebuilds the dropdown, the filter and the select all option.
*/
rebuild: function() {
this.$ul.html('');
// Remove select all option in select.
$('option[value="' + this.options.selectAllValue + '"]', this.$select).remove();
// Important to distinguish between radios and checkboxes.
this.options.multiple = this.$select.attr('multiple') === "multiple";
this.buildSelectAll();
this.buildDropdownOptions();
this.buildFilter();
this.updateButtonText();
this.updateSelectAll();
},
/**
* The provided data will be used to build the dropdown.
*
* @param {Array} dataprovider
*/
dataprovider: function(dataprovider) {
var optionDOM = "";
dataprovider.forEach(function (option) {
optionDOM += '<option value="' + option.value + '">' + option.label + '</option>';
});
this.$select.html(optionDOM);
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, options);
},
/**
* Checks whether a select all option is present.
*
* @returns {Boolean}
*/
hasSelectAll: function() {
return $('option[value="' + this.options.selectAllValue + '"]', this.$select).length > 0;
},
/**
* Updates the select all option based on the currently selected options.
*/
updateSelectAll: function() {
if (this.hasSelectAll()) {
var selected = this.getSelected();
if (selected.length === $('option:not([data-role=divider])', this.$select).length - 1) {
this.select(this.options.selectAllValue);
}
else {
this.deselect(this.options.selectAllValue);
}
}
},
/**
* 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.
$('button', this.$container).html(this.options.buttonText(options, this.$select));
// Now update the title attribute of the button.
$('button', this.$container).attr('title', this.options.buttonTitle(options, this.$select));
},
/**
* Get all selected options.
*
* @returns {jQUery}
*/
getSelected: function() {
return $('option[value!="' + this.options.selectAllValue + '"]:selected', this.$select).filter(function() {
return $(this).prop('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 = $('li input', this.$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);
}
};
$.fn.multiselect = function(option, parameter) {
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);
if (option === 'destroy') {
$(this).data('multiselect', false);
}
}
});
};
$.fn.multiselect.Constructor = Multiselect;
$(function() {
$("select[data-role=multiselect]").multiselect();
});
}(window.jQuery);
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