/* jshint forin:true, noarg:true, noempty:true, eqeqeq:true, boss:true, undef:true, curly:true, browser:true, jquery:true */
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/*
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* jQuery MultiSelect UI Widget 1.14pre
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* Copyright (c) 2012 Eric Hynds
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*
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* http://www.erichynds.com/jquery/jquery-ui-multiselect-widget/
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*
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* Depends:
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* - jQuery 1.4.2+
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* - jQuery UI 1.8 widget factory
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*
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* Optional:
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* - jQuery UI effects
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* - jQuery UI position utility
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*
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* Dual licensed under the MIT and GPL licenses:
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* http://www.opensource.org/licenses/mit-license.php
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* http://www.gnu.org/licenses/gpl.html
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*
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*/
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(function($, undefined) {
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var multiselectID = 0;
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var $doc = $(document);
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$.widget("ech.multiselect", {
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// default options
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options: {
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header: true,
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height: 175,
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minWidth: 225,
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classes: '',
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checkAllText: 'Check all',
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uncheckAllText: 'Uncheck all',
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noneSelectedText: 'Select options',
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selectedText: '# selected',
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selectedList: 0,
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show: null,
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hide: null,
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autoOpen: false,
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multiple: true,
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position: {}
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},
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_create: function() {
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var el = this.element.hide();
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var o = this.options;
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this.speed = $.fx.speeds._default; // default speed for effects
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this._isOpen = false; // assume no
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// create a unique namespace for events that the widget
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// factory cannot unbind automatically. Use eventNamespace if on
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// jQuery UI 1.9+, and otherwise fallback to a custom string.
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this._namespaceID = this.eventNamespace || ('multiselect' + multiselectID);
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var button = (this.button = $('<button type="button"><span class="ui-icon ui-icon-triangle-1-s"></span></button>'))
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.addClass('ui-multiselect ui-widget ui-state-default ui-corner-all')
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.addClass(o.classes)
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.attr({ 'title':el.attr('title'), 'aria-haspopup':true, 'tabIndex':el.attr('tabIndex') })
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.insertAfter(el),
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buttonlabel = (this.buttonlabel = $('<span />'))
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.html(o.noneSelectedText)
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.appendTo(button),
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menu = (this.menu = $('<div />'))
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.addClass('ui-multiselect-menu ui-widget ui-widget-content ui-corner-all')
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.addClass(o.classes)
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.appendTo(document.body),
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header = (this.header = $('<div />'))
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.addClass('ui-widget-header ui-corner-all ui-multiselect-header ui-helper-clearfix')
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.appendTo(menu),
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headerLinkContainer = (this.headerLinkContainer = $('<ul />'))
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.addClass('ui-helper-reset')
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.html(function() {
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if(o.header === true) {
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return '<li><a class="ui-multiselect-all" href="#"><span class="ui-icon ui-icon-check"></span><span>' + o.checkAllText + '</span></a></li><li><a class="ui-multiselect-none" href="#"><span class="ui-icon ui-icon-closethick"></span><span>' + o.uncheckAllText + '</span></a></li>';
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} else if(typeof o.header === "string") {
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return '<li>' + o.header + '</li>';
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} else {
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return '';
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}
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})
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.append('<li class="ui-multiselect-close"><a href="#" class="ui-multiselect-close"><span class="ui-icon ui-icon-circle-close"></span></a></li>')
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.appendTo(header),
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checkboxContainer = (this.checkboxContainer = $('<ul />'))
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.addClass('ui-multiselect-checkboxes ui-helper-reset')
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.appendTo(menu);
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// perform event bindings
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this._bindEvents();
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// build menu
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this.refresh(true);
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// some addl. logic for single selects
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if(!o.multiple) {
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menu.addClass('ui-multiselect-single');
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}
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// bump unique ID
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multiselectID++;
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},
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_init: function() {
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if(this.options.header === false) {
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this.header.hide();
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}
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if(!this.options.multiple) {
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this.headerLinkContainer.find('.ui-multiselect-all, .ui-multiselect-none').hide();
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}
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if(this.options.autoOpen) {
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this.open();
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}
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if(this.element.is(':disabled')) {
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this.disable();
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}
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},
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refresh: function(init) {
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var el = this.element;
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var o = this.options;
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var menu = this.menu;
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var checkboxContainer = this.checkboxContainer;
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var optgroups = [];
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var html = "";
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var id = el.attr('id') || multiselectID++; // unique ID for the label & option tags
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// build items
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el.find('option').each(function(i) {
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var $this = $(this);
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var parent = this.parentNode;
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var title = this.innerHTML;
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var description = this.title;
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var value = this.value;
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var inputID = 'ui-multiselect-' + (this.id || id + '-option-' + i);
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var isDisabled = this.disabled;
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var isSelected = this.selected;
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var labelClasses = [ 'ui-corner-all' ];
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var liClasses = (isDisabled ? 'ui-multiselect-disabled ' : ' ') + this.className;
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var optLabel;
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// is this an optgroup?
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if(parent.tagName === 'OPTGROUP') {
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optLabel = parent.getAttribute('label');
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// has this optgroup been added already?
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if($.inArray(optLabel, optgroups) === -1) {
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html += '<li class="ui-multiselect-optgroup-label ' + parent.className + '"><a href="#">' + optLabel + '</a></li>';
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optgroups.push(optLabel);
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}
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}
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if(isDisabled) {
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labelClasses.push('ui-state-disabled');
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}
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// browsers automatically select the first option
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// by default with single selects
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if(isSelected && !o.multiple) {
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labelClasses.push('ui-state-active');
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}
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html += '<li class="' + liClasses + '">';
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// create the label
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html += '<label for="' + inputID + '" title="' + description + '" class="' + labelClasses.join(' ') + '">';
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html += '<input id="' + inputID + '" name="multiselect_' + id + '" type="' + (o.multiple ? "checkbox" : "radio") + '" value="' + value + '" title="' + title + '"';
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// pre-selected?
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if(isSelected) {
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html += ' checked="checked"';
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html += ' aria-selected="true"';
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}
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// disabled?
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if(isDisabled) {
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html += ' disabled="disabled"';
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html += ' aria-disabled="true"';
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}
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// add the title and close everything off
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html += ' /><span>' + title + '</span></label></li>';
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});
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// insert into the DOM
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checkboxContainer.html(html);
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// cache some moar useful elements
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this.labels = menu.find('label');
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this.inputs = this.labels.children('input');
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// set widths
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this._setButtonWidth();
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this._setMenuWidth();
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// remember default value
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this.button[0].defaultValue = this.update();
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// broadcast refresh event; useful for widgets
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if(!init) {
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this._trigger('refresh');
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}
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},
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// updates the button text. call refresh() to rebuild
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update: function() {
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var o = this.options;
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var $inputs = this.inputs;
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var $checked = $inputs.filter(':checked');
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var numChecked = $checked.length;
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var value;
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if(numChecked === 0) {
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value = o.noneSelectedText;
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} else {
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if($.isFunction(o.selectedText)) {
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value = o.selectedText.call(this, numChecked, $inputs.length, $checked.get());
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} else if(/\d/.test(o.selectedList) && o.selectedList > 0 && numChecked <= o.selectedList) {
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value = $checked.map(function() { return $(this).next().html(); }).get().join(', ');
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} else {
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value = o.selectedText.replace('#', numChecked).replace('#', $inputs.length);
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}
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}
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this._setButtonValue(value);
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return value;
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},
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// this exists as a separate method so that the developer
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// can easily override it.
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_setButtonValue: function(value) {
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this.buttonlabel.text(value);
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},
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// binds events
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_bindEvents: function() {
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var self = this;
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var button = this.button;
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function clickHandler() {
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self[ self._isOpen ? 'close' : 'open' ]();
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return false;
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}
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// webkit doesn't like it when you click on the span :(
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button
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.find('span')
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.bind('click.multiselect', clickHandler);
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// button events
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button.bind({
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click: clickHandler,
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keypress: function(e) {
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switch(e.which) {
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case 27: // esc
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case 38: // up
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case 37: // left
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self.close();
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break;
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case 39: // right
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case 40: // down
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self.open();
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break;
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}
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},
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mouseenter: function() {
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if(!button.hasClass('ui-state-disabled')) {
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$(this).addClass('ui-state-hover');
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}
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},
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mouseleave: function() {
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$(this).removeClass('ui-state-hover');
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},
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focus: function() {
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if(!button.hasClass('ui-state-disabled')) {
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$(this).addClass('ui-state-focus');
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}
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},
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blur: function() {
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$(this).removeClass('ui-state-focus');
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}
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});
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// header links
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this.header.delegate('a', 'click.multiselect', function(e) {
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// close link
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if($(this).hasClass('ui-multiselect-close')) {
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self.close();
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// check all / uncheck all
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} else {
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self[$(this).hasClass('ui-multiselect-all') ? 'checkAll' : 'uncheckAll']();
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}
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e.preventDefault();
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});
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// optgroup label toggle support
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this.menu.delegate('li.ui-multiselect-optgroup-label a', 'click.multiselect', function(e) {
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e.preventDefault();
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var $this = $(this);
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var $inputs = $this.parent().nextUntil('li.ui-multiselect-optgroup-label').find('input:visible:not(:disabled)');
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var nodes = $inputs.get();
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var label = $this.parent().text();
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// trigger event and bail if the return is false
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if(self._trigger('beforeoptgrouptoggle', e, { inputs:nodes, label:label }) === false) {
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return;
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}
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// toggle inputs
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self._toggleChecked(
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$inputs.filter(':checked').length !== $inputs.length,
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$inputs
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);
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self._trigger('optgrouptoggle', e, {
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inputs: nodes,
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label: label,
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checked: nodes[0].checked
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});
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})
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.delegate('label', 'mouseenter.multiselect', function() {
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if(!$(this).hasClass('ui-state-disabled')) {
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self.labels.removeClass('ui-state-hover');
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$(this).addClass('ui-state-hover').find('input').focus();
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}
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})
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.delegate('label', 'keydown.multiselect', function(e) {
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e.preventDefault();
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switch(e.which) {
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case 9: // tab
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case 27: // esc
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self.close();
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break;
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case 38: // up
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case 40: // down
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case 37: // left
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case 39: // right
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self._traverse(e.which, this);
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break;
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case 13: // enter
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$(this).find('input')[0].click();
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break;
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}
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})
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.delegate('input[type="checkbox"], input[type="radio"]', 'click.multiselect', function(e) {
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var $this = $(this);
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var val = this.value;
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var checked = this.checked;
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var tags = self.element.find('option');
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// bail if this input is disabled or the event is cancelled
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if(this.disabled || self._trigger('click', e, { value: val, text: this.title, checked: checked }) === false) {
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e.preventDefault();
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return;
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}
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// make sure the input has focus. otherwise, the esc key
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// won't close the menu after clicking an item.
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$this.focus();
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// toggle aria state
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$this.attr('aria-selected', checked);
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// change state on the original option tags
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tags.each(function() {
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if(this.value === val) {
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this.selected = checked;
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} else if(!self.options.multiple) {
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this.selected = false;
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}
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});
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// some additional single select-specific logic
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if(!self.options.multiple) {
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self.labels.removeClass('ui-state-active');
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$this.closest('label').toggleClass('ui-state-active', checked);
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// close menu
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self.close();
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}
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// fire change on the select box
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self.element.trigger("change");
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// setTimeout is to fix multiselect issue #14 and #47. caused by jQuery issue #3827
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// http://bugs.jquery.com/ticket/3827
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setTimeout($.proxy(self.update, self), 10);
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});
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// close each widget when clicking on any other element/anywhere else on the page
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$doc.bind('mousedown.' + this._namespaceID, function(event) {
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var target = event.target;
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if(self._isOpen
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&& !$.contains(self.menu[0], target)
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&& !$.contains(self.button[0], target)
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&& target !== self.button[0]
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&& target !== self.menu[0])
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{
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self.close();
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}
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});
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// deal with form resets. the problem here is that buttons aren't
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// restored to their defaultValue prop on form reset, and the reset
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// handler fires before the form is actually reset. delaying it a bit
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// gives the form inputs time to clear.
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$(this.element[0].form).bind('reset.multiselect', function() {
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setTimeout($.proxy(self.refresh, self), 10);
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});
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},
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// set button width
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_setButtonWidth: function() {
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var width = this.element.outerWidth();
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var o = this.options;
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if(/\d/.test(o.minWidth) && width < o.minWidth) {
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width = o.minWidth;
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}
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// set widths
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this.button.outerWidth(width);
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},
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// set menu width
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_setMenuWidth: function() {
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var m = this.menu;
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m.outerWidth(this.button.outerWidth());
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},
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// move up or down within the menu
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_traverse: function(which, start) {
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var $start = $(start);
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var moveToLast = which === 38 || which === 37;
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// select the first li that isn't an optgroup label / disabled
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$next = $start.parent()[moveToLast ? 'prevAll' : 'nextAll']('li:not(.ui-multiselect-disabled, .ui-multiselect-optgroup-label)')[ moveToLast ? 'last' : 'first']();
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// if at the first/last element
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if(!$next.length) {
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var $container = this.menu.find('ul').last();
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// move to the first/last
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this.menu.find('label')[ moveToLast ? 'last' : 'first' ]().trigger('mouseover');
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// set scroll position
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$container.scrollTop(moveToLast ? $container.height() : 0);
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} else {
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$next.find('label').trigger('mouseover');
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}
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},
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// This is an internal function to toggle the checked property and
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// other related attributes of a checkbox.
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//
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// The context of this function should be a checkbox; do not proxy it.
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_toggleState: function(prop, flag) {
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return function() {
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if(!this.disabled) {
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this[ prop ] = flag;
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}
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if(flag) {
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this.setAttribute('aria-selected', true);
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} else {
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this.removeAttribute('aria-selected');
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}
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};
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},
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_toggleChecked: function(flag, group) {
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var $inputs = (group && group.length) ? group : this.inputs;
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var self = this;
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// toggle state on inputs
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$inputs.each(this._toggleState('checked', flag));
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// give the first input focus
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$inputs.eq(0).focus();
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// update button text
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this.update();
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// gather an array of the values that actually changed
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var values = $inputs.map(function() {
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return this.value;
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}).get();
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// toggle state on original option tags
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this.element
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.find('option')
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.each(function() {
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if(!this.disabled && $.inArray(this.value, values) > -1) {
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self._toggleState('selected', flag).call(this);
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}
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});
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// trigger the change event on the select
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if($inputs.length) {
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this.element.trigger("change");
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}
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},
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_toggleDisabled: function(flag) {
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this.button.attr({ 'disabled':flag, 'aria-disabled':flag })[ flag ? 'addClass' : 'removeClass' ]('ui-state-disabled');
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var inputs = this.menu.find('input');
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var key = "ech-multiselect-disabled";
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if(flag) {
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// remember which elements this widget disabled (not pre-disabled)
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// elements, so that they can be restored if the widget is re-enabled.
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inputs = inputs.filter(':enabled').data(key, true)
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} else {
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inputs = inputs.filter(function() {
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return $.data(this, key) === true;
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}).removeData(key);
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}
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inputs
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.attr({ 'disabled':flag, 'arial-disabled':flag })
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.parent()[ flag ? 'addClass' : 'removeClass' ]('ui-state-disabled');
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this.element.attr({
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'disabled':flag,
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'aria-disabled':flag
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});
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},
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// open the menu
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open: function(e) {
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var self = this;
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var button = this.button;
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var menu = this.menu;
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var speed = this.speed;
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var o = this.options;
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var args = [];
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// bail if the multiselectopen event returns false, this widget is disabled, or is already open
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if(this._trigger('beforeopen') === false || button.hasClass('ui-state-disabled') || this._isOpen) {
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return;
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}
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var $container = menu.find('ul').last();
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var effect = o.show;
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// figure out opening effects/speeds
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if($.isArray(o.show)) {
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effect = o.show[0];
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speed = o.show[1] || self.speed;
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}
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// if there's an effect, assume jQuery UI is in use
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// build the arguments to pass to show()
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if(effect) {
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args = [ effect, speed ];
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}
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// set the scroll of the checkbox container
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$container.scrollTop(0).height(o.height);
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// positon
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this.position();
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// show the menu, maybe with a speed/effect combo
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$.fn.show.apply(menu, args);
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// select the first not disabled option
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// triggering both mouseover and mouseover because 1.4.2+ has a bug where triggering mouseover
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// will actually trigger mouseenter. the mouseenter trigger is there for when it's eventually fixed
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this.labels.filter(':not(.ui-state-disabled)').eq(0).trigger('mouseover').trigger('mouseenter').find('input').trigger('focus');
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button.addClass('ui-state-active');
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this._isOpen = true;
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this._trigger('open');
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},
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// close the menu
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close: function() {
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if(this._trigger('beforeclose') === false) {
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return;
|
}
|
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var o = this.options;
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var effect = o.hide;
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var speed = this.speed;
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var args = [];
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// figure out opening effects/speeds
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if($.isArray(o.hide)) {
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effect = o.hide[0];
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speed = o.hide[1] || this.speed;
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}
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if(effect) {
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args = [ effect, speed ];
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}
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$.fn.hide.apply(this.menu, args);
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this.button.removeClass('ui-state-active').trigger('blur').trigger('mouseleave');
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this._isOpen = false;
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this._trigger('close');
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},
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enable: function() {
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this._toggleDisabled(false);
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},
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disable: function() {
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this._toggleDisabled(true);
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},
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checkAll: function(e) {
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this._toggleChecked(true);
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this._trigger('checkAll');
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},
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uncheckAll: function() {
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this._toggleChecked(false);
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this._trigger('uncheckAll');
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},
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getChecked: function() {
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return this.menu.find('input').filter(':checked');
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},
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destroy: function() {
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// remove classes + data
|
$.Widget.prototype.destroy.call(this);
|
|
// unbind events
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$doc.unbind(this._namespaceID);
|
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this.button.remove();
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this.menu.remove();
|
this.element.show();
|
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return this;
|
},
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isOpen: function() {
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return this._isOpen;
|
},
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widget: function() {
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return this.menu;
|
},
|
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getButton: function() {
|
return this.button;
|
},
|
|
position: function() {
|
var o = this.options;
|
|
// use the position utility if it exists and options are specifified
|
if($.ui.position && !$.isEmptyObject(o.position)) {
|
o.position.of = o.position.of || this.button;
|
|
this.menu
|
.show()
|
.position(o.position)
|
.hide();
|
|
// otherwise fallback to custom positioning
|
} else {
|
var pos = this.button.offset();
|
|
this.menu.css({
|
top: pos.top + this.button.outerHeight(),
|
left: pos.left
|
});
|
}
|
},
|
|
// react to option changes after initialization
|
_setOption: function(key, value) {
|
var menu = this.menu;
|
|
switch(key) {
|
case 'header':
|
menu.find('div.ui-multiselect-header')[value ? 'show' : 'hide']();
|
break;
|
case 'checkAllText':
|
menu.find('a.ui-multiselect-all span').eq(-1).text(value);
|
break;
|
case 'uncheckAllText':
|
menu.find('a.ui-multiselect-none span').eq(-1).text(value);
|
break;
|
case 'height':
|
menu.find('ul').last().height(parseInt(value, 10));
|
break;
|
case 'minWidth':
|
this.options[key] = parseInt(value, 10);
|
this._setButtonWidth();
|
this._setMenuWidth();
|
break;
|
case 'selectedText':
|
case 'selectedList':
|
case 'noneSelectedText':
|
this.options[key] = value; // these all needs to update immediately for the update() call
|
this.update();
|
break;
|
case 'classes':
|
menu.add(this.button).removeClass(this.options.classes).addClass(value);
|
break;
|
case 'multiple':
|
menu.toggleClass('ui-multiselect-single', !value);
|
this.options.multiple = value;
|
this.element[0].multiple = value;
|
this.refresh();
|
break;
|
case 'position':
|
this.position();
|
}
|
|
$.Widget.prototype._setOption.apply(this, arguments);
|
}
|
});
|
|
})(jQuery);
|
