query多选下拉框插件 jquery-multiselect(改动)

版权声明:本文为博主原创文章。未经博主同意不得转载。 https://blog.csdn.net/dz45693/article/details/30969353

事实上网上关于该控件的使用教程已经非常多了。当中

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个的介绍已经比較具体了,尤其是第二个有扩展MyValues函数,仅仅是扩展有些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。让每一个multiselect控件都有自己的multiValues属性。

我这里还须要一个获取text的方法。有关Myvalues和Mytexts的函数例如以下:

   MyValues: function () {
            return this.options.multiValues;
        },
        MyTexts: function () {
            return this.buttonlabel.html();
        },

默认的mytexts会有html编码效果,比方我的text是111&AAAA,我希望返回的呈现的text就是真是的值而不是111&ampAAA;要实现这个功能须要须要改动_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,于是乎我们须要一个close函数,函数定义在options属性里面     WinClose: null,实如今close方法里面

   if (this.options.WinClose) {
                this.options.WinClose(this);
            }

client的控件效果默认是没有固定高度。这里我们须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());

                        }
                    });

实现的效果例如以下:

当我们关闭弹出层时会调用我们的Winclose函数

改动后的整个js例如以下:

/* 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


posted @ 2019-05-23 11:28  mqxnongmin  阅读(269)  评论(0编辑  收藏  举报