query多选下拉框插件 jquery-multiselect(修改)
其实网上关于该控件的使用教程已经很多了，其中
query多选下拉框插件 jquery-multiselect
Jquery多选下拉列表插件jquery multiselect功能介绍及使用
这2个的介绍已经比较详细了，尤其是第二个有扩展MyValues函数，只是扩展有些bug，这里我在提出一些我的扩展，我们应该把multiValues属性定义在options里面，让每个multiselect控件都有自己的multiValues属性。我这里还需要一个获取text的方法。有关Myvalues和Mytexts的函数如下：
MyValues: function () {
return this.options.multiValues;
},
MyTexts: function () {
return this.buttonlabel.html();
},
默认的mytexts会有html编码效果，比如我的text是111&AAAA，我希望返回的呈现的text就是真是的值而不是111&AAA；要实现这个功能需要需要修改_setButtonValue函数
_setButtonValue: function (value) {
// this.buttonlabel.text(value);
this.buttonlabel.html(value);
},
在多选框弹出层关闭的时候我们要实现一些自己ajax请求，于是乎我们需要一个close函数，函数定义在options属性里面 WinClose: null,实现在close方法里面
if (this.options.WinClose) {
this.options.WinClose(this);
}
客户端的控件效果默认是没有固定高度，这里我们需要加一个固定高度给button
<button type="button" style=" height: 24px; overflow: hidden" >
最后的调用代码是：
$("select[id*='ListBox']").multiselect({
noneSelectedText: "==请选择==",
checkAllText: "全选",
uncheckAllText: '全不选',
selectedList: 5,
WinClose: function (val) {
alert("Values:" + val.MyValues() + " Texts:" + val.MyTexts());
}
});
实现的效果如下：
当我们关闭弹出层时会调用我们的Winclose函数
修改后的整个js如下：
/* jshint forin:true, noarg:true, noempty:true, eqeqeq:true, boss:true, undef:true, curly:true, browser:true, jquery:true */ /* * jQuery MultiSelect UI Widget 1.14pre * Copyright (c) 2012 Eric Hynds * * http://www.erichynds.com/jquery/jquery-ui-multiselect-widget/ * * Depends: * - jQuery 1.4.2+ * - jQuery UI 1.8 widget factory * * Optional: * - jQuery UI effects * - jQuery UI position utility * * Dual licensed under the MIT and GPL licenses: * http://www.opensource.org/licenses/mit-license.php * http://www.gnu.org/licenses/gpl.html * */ (function ($, undefined) { var multiselectID = 0; var $doc = $(document); $.widget("ech.multiselect", { // default options options: { multiValues: "", header: true, height: 175, minWidth: 225, classes: '', checkAllText: 'Check all', uncheckAllText: 'Uncheck all', noneSelectedText: 'Select options', selectedText: '# selected', selectedList: 0, show: null, hide: null, autoOpen: false, multiple: true, position: {}, WinClose: null, appendTo: "body" }, _create: function () { var el = this.element.hide(); var o = this.options; this.speed = $.fx.speeds._default; // default speed for effects this._isOpen = false; // assume no // create a unique namespace for events that the widget // factory cannot unbind automatically. Use eventNamespace if on // jQuery UI 1.9+, and otherwise fallback to a custom string. this._namespaceID = this.eventNamespace || ('multiselect' + multiselectID); var button = (this.button = $('<button type="button" style=" height: 24px; overflow: hidden" ><span class="ui-icon ui-icon-triangle-1-s"></span></button>')) .addClass('ui-multiselect ui-widget ui-state-default ui-corner-all') .addClass(o.classes) .attr({ 'title': el.attr('title'), 'aria-haspopup': true, 'tabIndex': el.attr('tabIndex') }) .insertAfter(el), buttonlabel = (this.buttonlabel = $('<span />')) .html(o.noneSelectedText) .appendTo(button), menu = (this.menu = $('<div />')) .addClass('ui-multiselect-menu ui-widget ui-widget-content ui-corner-all') .addClass(o.classes) .appendTo($(o.appendTo)), header = (this.header = $('<div />')) .addClass('ui-widget-header ui-corner-all ui-multiselect-header ui-helper-clearfix') .appendTo(menu), headerLinkContainer = (this.headerLinkContainer = $('<ul />')) .addClass('ui-helper-reset') .html(function () { if (o.header === true) { 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>'; } else if (typeof o.header === "string") { return '<li>' + o.header + '</li>'; } else { return ''; } }) .append('<li class="ui-multiselect-close"><a href="#" class="ui-multiselect-close"><span class="ui-icon ui-icon-circle-close"></span></a></li>') .appendTo(header), checkboxContainer = (this.checkboxContainer = $('<ul />')) .addClass('ui-multiselect-checkboxes ui-helper-reset') .appendTo(menu); // perform event bindings this._bindEvents(); // build menu this.refresh(true); // some addl. logic for single selects if (!o.multiple) { menu.addClass('ui-multiselect-single'); } // bump unique ID multiselectID++; }, _init: function () { if (this.options.header === false) { this.header.hide(); } if (!this.options.multiple) { this.headerLinkContainer.find('.ui-multiselect-all, .ui-multiselect-none').hide(); } if (this.options.autoOpen) { this.open(); } if (this.element.is(':disabled')) { this.disable(); } }, refresh: function (init) { var el = this.element; var o = this.options; var menu = this.menu; var checkboxContainer = this.checkboxContainer; var optgroups = []; var html = ""; var id = el.attr('id') || multiselectID++; // unique ID for the label & option tags // build items el.find('option').each(function (i) { var $this = $(this); var parent = this.parentNode; var description = this.innerHTML; var title = this.title; var value = this.value; var inputID = 'ui-multiselect-' + (this.id || id + '-option-' + i); var isDisabled = this.disabled; var isSelected = this.selected; var labelClasses = ['ui-corner-all']; var liClasses = (isDisabled ? 'ui-multiselect-disabled ' : ' ') + this.className; var optLabel; // is this an optgroup? if (parent.tagName === 'OPTGROUP') { optLabel = parent.getAttribute('label'); // has this optgroup been added already? if ($.inArray(optLabel, optgroups) === -1) { html += '<li class="ui-multiselect-optgroup-label ' + parent.className + '"><a href="#">' + optLabel + '</a></li>'; optgroups.push(optLabel); } } if (isDisabled) { labelClasses.push('ui-state-disabled'); } // browsers automatically select the first option // by default with single selects if (isSelected && !o.multiple) { labelClasses.push('ui-state-active'); } html += '<li class="' + liClasses + '">'; // create the label html += '<label for="' + inputID + '" title="' + title + '" class="' + labelClasses.join(' ') + '">'; html += '<input id="' + inputID + '" name="multiselect_' + id + '" type="' + (o.multiple ? "checkbox" : "radio") + '" value="' + value + '" title="' + title + '"'; // pre-selected? if (isSelected) { html += ' checked="checked"'; html += ' aria-selected="true"'; } // disabled? if (isDisabled) { html += ' disabled="disabled"'; html += ' aria-disabled="true"'; } // add the title and close everything off html += ' /><span>' + description + '</span></label></li>'; }); // insert into the DOM checkboxContainer.html(html); // cache some moar useful elements this.labels = menu.find('label'); this.inputs = this.labels.children('input'); // set widths this._setButtonWidth(); this._setMenuWidth(); // remember default value this.button[0].defaultValue = this.update(); // broadcast refresh event; useful for widgets if (!init) { this._trigger('refresh'); } }, MyValues: function () { return this.options.multiValues; }, MyTexts: function () { return this.buttonlabel.html(); }, // updates the button text. call refresh() to rebuild update: function () { var o = this.options; var $inputs = this.inputs; var $checked = $inputs.filter(':checked'); var numChecked = $checked.length; var value; if (numChecked === 0) { value = o.noneSelectedText; } else { if ($.isFunction(o.selectedText)) { value = o.selectedText.call(this, numChecked, $inputs.length, $checked.get()); } else if (/\d/.test(o.selectedList) && o.selectedList > 0 && numChecked <= o.selectedList) { value = $checked.map(function () { return $(this).next().html(); }).get().join(', '); } else { value = o.selectedText.replace('#', numChecked).replace('#', $inputs.length); } this.options.multiValues = $checked.map(function () { return $(this).val(); }).get().join(', '); } this._setButtonValue(value); return value; }, // this exists as a separate method so that the developer // can easily override it. _setButtonValue: function (value) { // this.buttonlabel.text(value); this.buttonlabel.html(value); }, // binds events _bindEvents: function () { var self = this; var button = this.button; function clickHandler() { self[self._isOpen ? 'close' : 'open'](); return false; } // webkit doesn't like it when you click on the span :( button .find('span') .bind('click.multiselect', clickHandler); // button events button.bind({ click: clickHandler, keypress: function (e) { switch (e.which) { case 27: // esc case 38: // up case 37: // left self.close(); break; case 39: // right case 40: // down self.open(); break; } }, mouseenter: function () { if (!button.hasClass('ui-state-disabled')) { $(this).addClass('ui-state-hover'); } }, mouseleave: function () { $(this).removeClass('ui-state-hover'); }, focus: function () { if (!button.hasClass('ui-state-disabled')) { $(this).addClass('ui-state-focus'); } }, blur: function () { $(this).removeClass('ui-state-focus'); } }); // header links this.header.delegate('a', 'click.multiselect', function (e) { // close link if ($(this).hasClass('ui-multiselect-close')) { self.close(); // check all / uncheck all } else { self[$(this).hasClass('ui-multiselect-all') ? 'checkAll' : 'uncheckAll'](); } e.preventDefault(); }); // optgroup label toggle support this.menu.delegate('li.ui-multiselect-optgroup-label a', 'click.multiselect', function (e) { e.preventDefault(); var $this = $(this); var $inputs = $this.parent().nextUntil('li.ui-multiselect-optgroup-label').find('input:visible:not(:disabled)'); var nodes = $inputs.get(); var label = $this.parent().text(); // trigger event and bail if the return is false if (self._trigger('beforeoptgrouptoggle', e, { inputs: nodes, label: label }) === false) { return; } // toggle inputs self._toggleChecked( $inputs.filter(':checked').length !== $inputs.length, $inputs ); self._trigger('optgrouptoggle', e, { inputs: nodes, label: label, checked: nodes[0].checked }); }) .delegate('label', 'mouseenter.multiselect', function () { if (!$(this).hasClass('ui-state-disabled')) { self.labels.removeClass('ui-state-hover'); $(this).addClass('ui-state-hover').find('input').focus(); } }) .delegate('label', 'keydown.multiselect', function (e) { e.preventDefault(); switch (e.which) { case 9: // tab case 27: // esc self.close(); break; case 38: // up case 40: // down case 37: // left case 39: // right self._traverse(e.which, this); break; case 13: // enter $(this).find('input')[0].click(); break; } }) .delegate('input[type="checkbox"], input[type="radio"]', 'click.multiselect', function (e) { var $this = $(this); var val = this.value; var checked = this.checked; var tags = self.element.find('option'); // bail if this input is disabled or the event is cancelled if (this.disabled || self._trigger('click', e, { value: val, text: this.title, checked: checked }) === false) { e.preventDefault(); return; } // make sure the input has focus. otherwise, the esc key // won't close the menu after clicking an item. $this.focus(); // toggle aria state $this.attr('aria-selected', checked); // change state on the original option tags tags.each(function () { if (this.value === val) { this.selected = checked; } else if (!self.options.multiple) { this.selected = false; } }); // some additional single select-specific logic if (!self.options.multiple) { self.labels.removeClass('ui-state-active'); $this.closest('label').toggleClass('ui-state-active', checked); // close menu self.close(); } // fire change on the select box self.element.trigger("change"); // setTimeout is to fix multiselect issue #14 and #47. caused by jQuery issue #3827 // http://bugs.jquery.com/ticket/3827 setTimeout($.proxy(self.update, self), 10); }); // close each widget when clicking on any other element/anywhere else on the page $doc.bind('mousedown.' + this._namespaceID, function (event) { var target = event.target; if (self._isOpen && target !== self.button[0] && target !== self.menu[0] && !$.contains(self.menu[0], target) && !$.contains(self.button[0], target) ) { self.close(); } }); // deal with form resets. the problem here is that buttons aren't // restored to their defaultValue prop on form reset, and the reset // handler fires before the form is actually reset. delaying it a bit // gives the form inputs time to clear. $(this.element[0].form).bind('reset.multiselect', function () { setTimeout($.proxy(self.refresh, self), 10); }); }, // set button width _setButtonWidth: function () { var width = this.element.outerWidth(); var o = this.options; if (/\d/.test(o.minWidth) && width < o.minWidth) { width = o.minWidth; } // set widths this.button.outerWidth(width); }, // set menu width _setMenuWidth: function () { var m = this.menu; m.outerWidth(this.button.outerWidth()); }, // move up or down within the menu _traverse: function (which, start) { var $start = $(start); var moveToLast = which === 38 || which === 37; // select the first li that isn't an optgroup label / disabled var $next = $start.parent()[moveToLast ? 'prevAll' : 'nextAll']('li:not(.ui-multiselect-disabled, .ui-multiselect-optgroup-label)').first(); // if at the first/last element if (!$next.length) { var $container = this.menu.find('ul').last(); // move to the first/last this.menu.find('label')[moveToLast ? 'last' : 'first']().trigger('mouseover'); // set scroll position $container.scrollTop(moveToLast ? $container.height() : 0); } else { $next.find('label').trigger('mouseover'); } }, // This is an internal function to toggle the checked property and // other related attributes of a checkbox. // // The context of this function should be a checkbox; do not proxy it. _toggleState: function (prop, flag) { return function () { if (!this.disabled) { this[prop] = flag; } if (flag) { this.setAttribute('aria-selected', true); } else { this.removeAttribute('aria-selected'); } }; }, _toggleChecked: function (flag, group) { var $inputs = (group && group.length) ? group : this.inputs; var self = this; // toggle state on inputs $inputs.each(this._toggleState('checked', flag)); // give the first input focus $inputs.eq(0).focus(); // update button text this.update(); // gather an array of the values that actually changed var values = $inputs.map(function () { return this.value; }).get(); // toggle state on original option tags this.element .find('option') .each(function () { if (!this.disabled && $.inArray(this.value, values) > -1) { self._toggleState('selected', flag).call(this); } }); // trigger the change event on the select if ($inputs.length) { this.element.trigger("change"); } }, _toggleDisabled: function (flag) { this.button.attr({ 'disabled': flag, 'aria-disabled': flag })[flag ? 'addClass' : 'removeClass']('ui-state-disabled'); var inputs = this.menu.find('input'); var key = "ech-multiselect-disabled"; if (flag) { // remember which elements this widget disabled (not pre-disabled) // elements, so that they can be restored if the widget is re-enabled. inputs = inputs.filter(':enabled').data(key, true) } else { inputs = inputs.filter(function () { return $.data(this, key) === true; }).removeData(key); } inputs .attr({ 'disabled': flag, 'arial-disabled': flag }) .parent()[flag ? 'addClass' : 'removeClass']('ui-state-disabled'); this.element.attr({ 'disabled': flag, 'aria-disabled': flag }); }, // open the menu open: function (e) { var self = this; var button = this.button; var menu = this.menu; var speed = this.speed; var o = this.options; var args = []; // bail if the multiselectopen event returns false, this widget is disabled, or is already open if (this._trigger('beforeopen') === false || button.hasClass('ui-state-disabled') || this._isOpen) { return; } var $container = menu.find('ul').last(); var effect = o.show; // figure out opening effects/speeds if ($.isArray(o.show)) { effect = o.show[0]; speed = o.show[1] || self.speed; } // if there's an effect, assume jQuery UI is in use // build the arguments to pass to show() if (effect) { args = [effect, speed]; } // set the scroll of the checkbox container $container.scrollTop(0).height(o.height); // positon this.position(); // show the menu, maybe with a speed/effect combo $.fn.show.apply(menu, args); // select the first not disabled option // triggering both mouseover and mouseover because 1.4.2+ has a bug where triggering mouseover // will actually trigger mouseenter. the mouseenter trigger is there for when it's eventually fixed this.labels.filter(':not(.ui-state-disabled)').eq(0).trigger('mouseover').trigger('mouseenter').find('input').trigger('focus'); button.addClass('ui-state-active'); this._isOpen = true; this._trigger('open'); }, // close the menu close: function () { if (this._trigger('beforeclose') === false) { return; } var o = this.options; var effect = o.hide; var speed = this.speed; var args = []; // figure out opening effects/speeds if ($.isArray(o.hide)) { effect = o.hide[0]; speed = o.hide[1] || this.speed; } if (effect) { args = [effect, speed]; } $.fn.hide.apply(this.menu, args); this.button.removeClass('ui-state-active').trigger('blur').trigger('mouseleave'); this._isOpen = false; this._trigger('close'); if (this.options.WinClose) { this.options.WinClose(this); } }, enable: function () { this._toggleDisabled(false); }, disable: function () { this._toggleDisabled(true); }, checkAll: function (e) { this._toggleChecked(true); this._trigger('checkAll'); }, uncheckAll: function () { this._toggleChecked(false); this._trigger('uncheckAll'); }, getChecked: function () { return this.menu.find('input').filter(':checked'); }, destroy: function () { // remove classes + data $.Widget.prototype.destroy.call(this); // unbind events $doc.unbind(this._namespaceID); this.button.remove(); this.menu.remove(); this.element.show(); return this; }, isOpen: function () { return this._isOpen; }, widget: function () { return this.menu; }, getButton: function () { return this.button; }, position: function () { var o = this.options; // use the position utility if it exists and options are specifified if ($.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);
完整的demo下载地址