391 lines
11 KiB
JavaScript
391 lines
11 KiB
JavaScript
/**
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* @author zhixin wen <wenzhixin2010@gmail.com>
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* @version 1.0.5
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*
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* http://wenzhixin.net.cn/p/multiple-select/
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*/
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(function($) {
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'use strict';
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function MultipleSelect($el, options) {
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var that = this,
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elWidth = $el.width();
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this.$el = $el.hide();
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this.options = options;
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this.$parent = $('<div class="ms-parent"></div>');
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this.$choice = $('<button type="button" class="ms-choice"><span class="placeholder">' +
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options.placeholder + '</span><div></div></button>');
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this.$drop = $('<div class="ms-drop"></div>');
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this.$el.after(this.$parent);
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this.$parent.append(this.$choice);
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this.$parent.append(this.$drop);
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if (this.$el.prop('disabled')) {
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this.$choice.addClass('disabled');
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}
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this.$choice.css('width', elWidth + 'px');
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this.$drop.css({
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width: (options.width || elWidth) + 'px'
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});
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$('body').click(function(e) {
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if ($(e.target)[0] === that.$choice[0] ||
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$(e.target).parents('.ms-choice')[0] === that.$choice[0]) {
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return;
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}
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if (($(e.target)[0] === that.$drop[0] ||
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$(e.target).parents('.ms-drop')[0] !== that.$drop[0]) &&
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that.options.isopen) {
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that.close();
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}
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});
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if (this.options.isopen) {
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this.open();
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}
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}
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MultipleSelect.prototype = {
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constructor : MultipleSelect,
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init: function() {
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var that = this,
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html = [];
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if (this.options.filter) {
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html.push(
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'<div class="ms-search">',
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'<input type="text" autocomplete="off" autocorrect="off" autocapitilize="off" spellcheck="false">',
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'</div>'
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);
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}
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html.push('<ul>');
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if (this.options.selectAll) {
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html.push(
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'<li>',
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'<label>',
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'<input type="checkbox" name="selectAll" /> ',
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'[' + this.options.selectAllText + ']',
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'</label>',
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'</li>'
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);
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}
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$.each(this.$el.children(), function(i, elm) {
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html.push(that.optionToHtml(i, elm));
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});
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html.push('</ul>');
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this.$drop.html(html.join(''));
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this.$drop.find('ul').css('max-height', this.options.maxHeight + 'px');
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this.$drop.find('.multiple').css('width', this.options.multipleWidth + 'px');
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this.$searchInput = this.$drop.find('.ms-search input');
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this.$selectAll = this.$drop.find('input[name="selectAll"]');
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this.$selectGroups = this.$drop.find('input[name="selectGroup"]');
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this.$selectItems = this.$drop.find('input[name="selectItem"]:enabled');
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this.$disableItems = this.$drop.find('input[name="selectItem"]:disabled');
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this.events();
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this.update();
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},
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optionToHtml: function(i, elm, group, groupDisabled) {
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var that = this,
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$elm = $(elm),
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html = [],
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multiple = this.options.multiple,
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disabled;
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if ($elm.is('option')) {
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var value = $elm.val(),
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text = $elm.text(),
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selected = $elm.prop('selected');
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disabled = groupDisabled || $elm.prop('disabled');
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html.push(
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'<li' + (multiple ? ' class="multiple"' : '') + '>',
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'<label' + (disabled ? ' class="disabled"' : '') + '>',
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'<input type="checkbox" name="selectItem" value="' + value + '"' +
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(selected ? ' checked="checked"' : '') +
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(disabled ? ' disabled="disabled"' : '') +
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(group ? ' data-group="' + group + '"' : '') +
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'/> ',
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text,
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'</label>',
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'</li>'
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);
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} else if (!group && $elm.is('optgroup')) {
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var _group = 'group_' + i,
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label = $elm.attr('label');
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disabled = $elm.prop('disabled');
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html.push(
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'<li class="group">',
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'<label class="optgroup' + (disabled ? ' disabled' : '') + '" data-group="' + _group + '">',
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'<input type="checkbox" name="selectGroup"' + (disabled ? ' disabled="disabled"' : '') + ' /> ',
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label,
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'</label>',
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'</li>');
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$.each($elm.children(), function(i, elm) {
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html.push(that.optionToHtml(i, elm, _group, disabled));
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});
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}
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return html.join('');
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},
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events: function() {
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var that = this;
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this.$choice.off('click').on('click', function() {
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that[that.options.isopen ? 'close' : 'open']();
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});
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this.$parent.off('keydown').on('keydown', function(e) {
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switch (e.which) {
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case 27: // esc key
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that.close();
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that.$choice.focus();
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break;
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}
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});
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this.$searchInput.off('keyup').on('keyup', function() {
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that.filter();
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});
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this.$selectAll.off('click').on('click', function() {
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var checked = $(this).prop('checked'),
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$items = that.$selectItems.filter(':visible');
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if ($items.length === that.$selectItems.length) {
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that[checked ? 'checkAll' : 'uncheckAll']();
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} else { // when the filter option is true
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that.$selectGroups.prop('checked', checked);
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$items.prop('checked', checked);
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that.update();
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}
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});
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this.$selectGroups.off('click').on('click', function() {
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var group = $(this).parent().attr('data-group'),
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$items = that.$selectItems.filter(':visible'),
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$children = $items.filter('[data-group="' + group + '"]'),
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checked = $children.length !== $children.filter(':checked').length;
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$children.prop('checked', checked);
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that.updateSelectAll();
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that.update();
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that.options.onOptgroupClick({
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label: $(this).parent().text(),
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checked: checked,
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children: $children.get()
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});
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});
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this.$selectItems.off('click').on('click', function() {
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that.updateSelectAll();
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that.update();
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that.updateOptGroupSelect();
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that.options.onClick({
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label: $(this).parent().text(),
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value: $(this).val(),
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checked: $(this).prop('checked')
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});
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});
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},
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open: function() {
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if (this.$choice.hasClass('disabled')) {
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return;
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}
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this.options.isopen = true;
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this.$choice.find('>div').addClass('open');
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this.$drop.show();
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if (this.options.filter) {
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this.$searchInput.val('');
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this.filter();
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}
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this.options.onOpen();
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},
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close: function() {
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this.options.isopen = false;
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this.$choice.find('>div').removeClass('open');
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this.$drop.hide();
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this.options.onClose();
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},
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update: function() {
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var selects = this.getSelects('text'),
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$span = this.$choice.find('>span');
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if (selects.length) {
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$span.removeClass('placeholder').html(selects.join(', '));
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} else {
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$span.addClass('placeholder').html(this.options.placeholder);
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}
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// set selects to select
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this.$el.val(this.getSelects());
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},
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updateSelectAll: function() {
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var $items = this.$selectItems.filter(':visible');
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this.$selectAll.prop('checked', $items.length &&
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$items.length === $items.filter(':checked').length);
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},
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updateOptGroupSelect: function() {
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var $items = this.$selectItems.filter(':visible');
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$.each(this.$selectGroups, function(i, val) {
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var group = $(val).parent().attr('data-group'),
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$children = $items.filter('[data-group="' + group + '"]');
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$(val).prop('checked', $children.length &&
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$children.length === $children.filter(':checked').length);
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});
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},
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//value or text, default: 'value'
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getSelects: function(type) {
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var that = this,
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texts = [],
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values = [];
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this.$drop.find('input[name="selectItem"]:checked').each(function() {
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texts.push($(this).parent().text());
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values.push($(this).val());
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});
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if (type === 'text' && this.$selectGroups.length) {
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texts = [];
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this.$selectGroups.each(function() {
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var html = [],
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text = $.trim($(this).parent().text()),
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group = $(this).parent().data('group'),
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$children = that.$drop.find('[name="selectItem"][data-group="' + group + '"]'),
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$selected = $children.filter(':checked');
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if ($selected.length === 0) {
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return;
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}
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html.push('[');
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html.push(text);
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if ($children.length > $selected.length) {
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var list = [];
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$selected.each(function() {
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list.push($(this).parent().text());
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});
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html.push(': ' + list.join(', '));
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}
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html.push(']');
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texts.push(html.join(''));
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});
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}
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return type === 'text' ? texts : values;
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},
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setSelects: function(values) {
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var that = this;
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this.$selectItems.prop('checked', false);
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$.each(values, function(i, value) {
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that.$selectItems.filter('[value="' + value + '"]').prop('checked', true);
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});
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this.$selectAll.prop('checked', this.$selectItems.length ===
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this.$selectItems.filter(':checked').length);
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this.update();
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},
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enable: function() {
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this.$choice.removeClass('disabled');
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},
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disable: function() {
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this.$choice.addClass('disabled');
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},
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checkAll: function() {
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this.$selectItems.prop('checked', true);
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this.$selectGroups.prop('checked', true);
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this.$selectAll.prop('checked', true);
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this.update();
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this.options.onCheckAll();
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},
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uncheckAll: function() {
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this.$selectItems.prop('checked', false);
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this.$selectGroups.prop('checked', false);
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this.$selectAll.prop('checked', false);
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this.update();
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this.options.onUncheckAll();
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},
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refresh: function() {
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this.init();
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},
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filter: function() {
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var that = this,
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text = $.trim(this.$searchInput.val()).toLowerCase();
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if (text.length === 0) {
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this.$selectItems.parent().show();
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this.$disableItems.parent().show();
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this.$selectGroups.parent().show();
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} else {
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this.$selectItems.each(function() {
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var $parent = $(this).parent();
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$parent[$parent.text().toLowerCase().indexOf(text) < 0 ? 'hide' : 'show']();
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});
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this.$disableItems.parent().hide();
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this.$selectGroups.each(function() {
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var $parent = $(this).parent();
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var group = $parent.attr('data-group'),
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$items = that.$selectItems.filter(':visible');
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$parent[$items.filter('[data-group="' + group + '"]').length === 0 ? 'hide' : 'show']();
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});
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}
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this.updateOptGroupSelect();
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this.updateSelectAll();
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}
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};
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$.fn.multipleSelect = function() {
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var option = arguments[0],
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args = arguments,
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value,
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allowedMethods = ['getSelects', 'setSelects', 'enable', 'disable', 'checkAll', 'uncheckAll', 'refresh'];
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this.each(function() {
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var $this = $(this),
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data = $this.data('multipleSelect'),
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options = $.extend({}, $.fn.multipleSelect.defaults, typeof option === 'object' && option);
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if (!data) {
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data = new MultipleSelect($this, options);
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$this.data('multipleSelect', data);
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}
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if (typeof option === 'string') {
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if ($.inArray(option, allowedMethods) < 0) {
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throw "Unknown method: " + option;
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}
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value = data[option](args[1]);
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} else {
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data.init();
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}
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});
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return value ? value : this;
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};
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$.fn.multipleSelect.defaults = {
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isopen: false,
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placeholder: '',
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selectAll: true,
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selectAllText: 'Select all',
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multiple: false,
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multipleWidth: 80,
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filter: false,
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width: undefined,
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maxHeight: 250,
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onOpen: function() {return false;},
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onClose: function() {return false;},
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onCheckAll: function() {return false;},
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onUncheckAll: function() {return false;},
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onOptgroupClick: function() {return false;},
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onClick: function() {return false;}
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};
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})(jQuery);
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