/**
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* menu - jQuery EasyUI
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*
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* Copyright (c) 2009-2013 www.jeasyui.com. All rights reserved.
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*
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* Licensed under the GPL or commercial licenses
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* To use it on other terms please contact us: info@jeasyui.com
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* http://www.gnu.org/licenses/gpl.txt
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* http://www.jeasyui.com/license_commercial.php
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*/
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(function($){
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/**
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* initialize the target menu, the function can be invoked only once
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*/
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function init(target){
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$(target).appendTo('body');
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$(target).addClass('menu-top'); // the top menu
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$(document).unbind('.menu').bind('mousedown.menu', function(e){
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var allMenu = $('body>div.menu:visible');
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var m = $(e.target).closest('div.menu', allMenu);
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if (m.length){return}
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$('body>div.menu-top:visible').menu('hide');
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});
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var menus = splitMenu($(target));
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for(var i=0; i<menus.length; i++){
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createMenu(menus[i]);
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}
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function splitMenu(menu){
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var menus = [];
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menu.addClass('menu');
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menus.push(menu);
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if (!menu.hasClass('menu-content')){
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menu.children('div').each(function(){
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var submenu = $(this).children('div');
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if (submenu.length){
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submenu.insertAfter(target);
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this.submenu = submenu; // point to the sub menu
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var mm = splitMenu(submenu);
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menus = menus.concat(mm);
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}
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});
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}
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return menus;
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}
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function createMenu(menu){
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var width = $.parser.parseOptions(menu[0], ['width']).width;
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if (menu.hasClass('menu-content')){
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menu[0].originalWidth = width || menu._outerWidth();
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} else {
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menu[0].originalWidth = width || 0;
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menu.children('div').each(function(){
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var item = $(this);
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var itemOpts = $.extend({}, $.parser.parseOptions(this,['name','iconCls','href',{separator:'boolean'}]), {
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disabled: (item.attr('disabled') ? true : undefined)
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});
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if (itemOpts.separator){
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item.addClass('menu-sep');
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}
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if (!item.hasClass('menu-sep')){
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item[0].itemName = itemOpts.name || '';
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item[0].itemHref = itemOpts.href || '';
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var text = item.addClass('menu-item').html();
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item.empty().append($('<div class="menu-text"></div>').html(text));
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if (itemOpts.iconCls){
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$('<div class="menu-icon"></div>').addClass(itemOpts.iconCls).appendTo(item);
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}
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if (itemOpts.disabled){
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setDisabled(target, item[0], true);
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}
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if (item[0].submenu){
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$('<div class="menu-rightarrow"></div>').appendTo(item); // has sub menu
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}
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bindMenuItemEvent(target, item);
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}
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});
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$('<div class="menu-line"></div>').prependTo(menu);
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}
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setMenuWidth(target, menu);
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menu.hide();
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bindMenuEvent(target, menu);
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}
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}
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function setMenuWidth(target, menu){
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var opts = $.data(target, 'menu').options;
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// var d = menu.css('display');
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var style = menu.attr('style');
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menu.css({
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display: 'block',
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left:-10000,
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height: 'auto',
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overflow: 'hidden'
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});
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// menu.find('div.menu-item')._outerHeight(22);
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var width = 0;
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menu.find('div.menu-text').each(function(){
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if (width < $(this)._outerWidth()){
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width = $(this)._outerWidth();
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}
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$(this).closest('div.menu-item')._outerHeight($(this)._outerHeight()+2);
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});
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width += 65;
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menu._outerWidth(Math.max((menu[0].originalWidth || 0), width, opts.minWidth));
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menu.children('div.menu-line')._outerHeight(menu.outerHeight());
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// menu.css('display', d);
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menu.attr('style', style);
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}
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/**
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* bind menu event
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*/
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function bindMenuEvent(target, menu){
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var state = $.data(target, 'menu');
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menu.unbind('.menu').bind('mouseenter.menu', function(){
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if (state.timer){
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clearTimeout(state.timer);
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state.timer = null;
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}
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}).bind('mouseleave.menu', function(){
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if (state.options.hideOnUnhover){
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state.timer = setTimeout(function(){
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hideAll(target);
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}, 100);
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}
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});
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}
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/**
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* bind menu item event
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*/
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function bindMenuItemEvent(target, item){
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if (!item.hasClass('menu-item')){return}
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item.unbind('.menu');
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item.bind('click.menu', function(){
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if ($(this).hasClass('menu-item-disabled')){
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return;
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}
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// only the sub menu clicked can hide all menus
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if (!this.submenu){
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hideAll(target);
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var href = $(this).attr('href');
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if (href){
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location.href = href;
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}
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}
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var item = $(target).menu('getItem', this);
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$.data(target, 'menu').options.onClick.call(target, item);
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}).bind('mouseenter.menu', function(e){
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// hide other menu
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item.siblings().each(function(){
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if (this.submenu){
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hideMenu(this.submenu);
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}
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$(this).removeClass('menu-active');
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});
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// show this menu
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item.addClass('menu-active');
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if ($(this).hasClass('menu-item-disabled')){
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item.addClass('menu-active-disabled');
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return;
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}
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var submenu = item[0].submenu;
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if (submenu){
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$(target).menu('show', {
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menu: submenu,
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parent: item
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});
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}
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}).bind('mouseleave.menu', function(e){
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item.removeClass('menu-active menu-active-disabled');
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var submenu = item[0].submenu;
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if (submenu){
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if (e.pageX>=parseInt(submenu.css('left'))){
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item.addClass('menu-active');
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} else {
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hideMenu(submenu);
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}
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} else {
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item.removeClass('menu-active');
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}
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});
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}
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/**
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* hide top menu and it's all sub menus
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*/
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function hideAll(target){
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var state = $.data(target, 'menu');
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if (state){
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if ($(target).is(':visible')){
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hideMenu($(target));
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state.options.onHide.call(target);
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}
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}
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return false;
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}
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/**
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* show the menu, the 'param' object has one or more properties:
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* left: the left position to display
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* top: the top position to display
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* menu: the menu to display, if not defined, the 'target menu' is used
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* parent: the parent menu item to align to
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* alignTo: the element object to align to
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*/
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function showMenu(target, param){
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var left,top;
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param = param || {};
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var menu = $(param.menu || target);
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if (menu.hasClass('menu-top')){
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var opts = $.data(target, 'menu').options;
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$.extend(opts, param);
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left = opts.left;
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top = opts.top;
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if (opts.alignTo){
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var at = $(opts.alignTo);
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left = at.offset().left;
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top = at.offset().top + at._outerHeight();
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}
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// if (param.left != undefined){left = param.left}
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// if (param.top != undefined){top = param.top}
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if (left + menu.outerWidth() > $(window)._outerWidth() + $(document)._scrollLeft()){
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left = $(window)._outerWidth() + $(document).scrollLeft() - menu.outerWidth() - 5;
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}
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if (top + menu.outerHeight() > $(window)._outerHeight() + $(document).scrollTop()){
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// top -= menu.outerHeight();
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top = $(window)._outerHeight() + $(document).scrollTop() - menu.outerHeight() - 5;
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}
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} else {
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var parent = param.parent; // the parent menu item
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left = parent.offset().left + parent.outerWidth() - 2;
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if (left + menu.outerWidth() + 5 > $(window)._outerWidth() + $(document).scrollLeft()){
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left = parent.offset().left - menu.outerWidth() + 2;
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}
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var top = parent.offset().top - 3;
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if (top + menu.outerHeight() > $(window)._outerHeight() + $(document).scrollTop()){
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top = $(window)._outerHeight() + $(document).scrollTop() - menu.outerHeight() - 5;
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}
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}
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menu.css({left:left,top:top});
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menu.show(0, function(){
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if (!menu[0].shadow){
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menu[0].shadow = $('<div class="menu-shadow"></div>').insertAfter(menu);
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}
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menu[0].shadow.css({
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display:'block',
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zIndex:$.fn.menu.defaults.zIndex++,
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left:menu.css('left'),
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top:menu.css('top'),
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width:menu.outerWidth(),
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height:menu.outerHeight()
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});
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menu.css('z-index', $.fn.menu.defaults.zIndex++);
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if (menu.hasClass('menu-top')){
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$.data(menu[0], 'menu').options.onShow.call(menu[0]);
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}
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});
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}
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function hideMenu(menu){
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if (!menu) return;
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hideit(menu);
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menu.find('div.menu-item').each(function(){
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if (this.submenu){
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hideMenu(this.submenu);
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}
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$(this).removeClass('menu-active');
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});
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function hideit(m){
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m.stop(true,true);
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if (m[0].shadow){
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m[0].shadow.hide();
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}
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m.hide();
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}
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}
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function findItem(target, text){
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var result = null;
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var tmp = $('<div></div>');
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function find(menu){
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menu.children('div.menu-item').each(function(){
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var item = $(target).menu('getItem', this);
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var s = tmp.empty().html(item.text).text();
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if (text == $.trim(s)) {
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result = item;
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} else if (this.submenu && !result){
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find(this.submenu);
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}
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});
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}
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find($(target));
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tmp.remove();
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return result;
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}
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function setDisabled(target, itemEl, disabled){
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var t = $(itemEl);
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if (!t.hasClass('menu-item')){return}
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if (disabled){
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t.addClass('menu-item-disabled');
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if (itemEl.onclick){
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itemEl.onclick1 = itemEl.onclick;
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itemEl.onclick = null;
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}
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} else {
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t.removeClass('menu-item-disabled');
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if (itemEl.onclick1){
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itemEl.onclick = itemEl.onclick1;
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itemEl.onclick1 = null;
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}
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}
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}
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function appendItem(target, param){
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var menu = $(target);
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if (param.parent){
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if (!param.parent.submenu){
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var submenu = $('<div class="menu"><div class="menu-line"></div></div>').appendTo('body');
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submenu.hide();
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param.parent.submenu = submenu;
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$('<div class="menu-rightarrow"></div>').appendTo(param.parent);
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}
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menu = param.parent.submenu;
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}
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if (param.separator){
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var item = $('<div class="menu-sep"></div>').appendTo(menu);
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} else {
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var item = $('<div class="menu-item"></div>').appendTo(menu);
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$('<div class="menu-text"></div>').html(param.text).appendTo(item);
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}
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if (param.iconCls) $('<div class="menu-icon"></div>').addClass(param.iconCls).appendTo(item);
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if (param.id) item.attr('id', param.id);
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if (param.name){item[0].itemName = param.name}
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if (param.href){item[0].itemHref = param.href}
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if (param.onclick){
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if (typeof param.onclick == 'string'){
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item.attr('onclick', param.onclick);
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} else {
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item[0].onclick = eval(param.onclick);
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}
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}
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if (param.handler){item[0].onclick = eval(param.handler)}
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if (param.disabled){setDisabled(target, item[0], true)}
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bindMenuItemEvent(target, item);
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bindMenuEvent(target, menu);
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setMenuWidth(target, menu);
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}
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function removeItem(target, itemEl){
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function removeit(el){
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if (el.submenu){
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el.submenu.children('div.menu-item').each(function(){
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removeit(this);
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});
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var shadow = el.submenu[0].shadow;
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if (shadow) shadow.remove();
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el.submenu.remove();
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}
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$(el).remove();
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}
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removeit(itemEl);
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}
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function destroyMenu(target){
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$(target).children('div.menu-item').each(function(){
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removeItem(target, this);
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});
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if (target.shadow) target.shadow.remove();
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$(target).remove();
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}
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$.fn.menu = function(options, param){
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if (typeof options == 'string'){
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return $.fn.menu.methods[options](this, param);
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}
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options = options || {};
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return this.each(function(){
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var state = $.data(this, 'menu');
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if (state){
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$.extend(state.options, options);
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} else {
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state = $.data(this, 'menu', {
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options: $.extend({}, $.fn.menu.defaults, $.fn.menu.parseOptions(this), options)
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});
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init(this);
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}
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$(this).css({
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left: state.options.left,
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top: state.options.top
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});
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});
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};
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$.fn.menu.methods = {
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options: function(jq){
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return $.data(jq[0], 'menu').options;
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},
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show: function(jq, pos){
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return jq.each(function(){
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showMenu(this, pos);
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});
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},
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hide: function(jq){
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return jq.each(function(){
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hideAll(this);
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});
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},
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destroy: function(jq){
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return jq.each(function(){
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destroyMenu(this);
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});
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},
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/**
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* set the menu item text
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* param: {
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* target: DOM object, indicate the menu item
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* text: string, the new text
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* }
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*/
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setText: function(jq, param){
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return jq.each(function(){
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$(param.target).children('div.menu-text').html(param.text);
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});
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},
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/**
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* set the menu icon class
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* param: {
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* target: DOM object, indicate the menu item
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* iconCls: the menu item icon class
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* }
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*/
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setIcon: function(jq, param){
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return jq.each(function(){
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var item = $(this).menu('getItem', param.target);
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if (item.iconCls){
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$(item.target).children('div.menu-icon').removeClass(item.iconCls).addClass(param.iconCls);
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} else {
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$('<div class="menu-icon"></div>').addClass(param.iconCls).appendTo(param.target);
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}
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});
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},
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/**
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* get the menu item data that contains the following property:
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* {
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* target: DOM object, the menu item
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* id: the menu id
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* text: the menu item text
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* iconCls: the icon class
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* href: a remote address to redirect to
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* onclick: a function to be called when the item is clicked
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* }
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*/
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getItem: function(jq, itemEl){
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var t = $(itemEl);
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var item = {
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target: itemEl,
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id: t.attr('id'),
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text: $.trim(t.children('div.menu-text').html()),
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disabled: t.hasClass('menu-item-disabled'),
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// href: t.attr('href'),
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// name: t.attr('name'),
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name: itemEl.itemName,
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href: itemEl.itemHref,
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onclick: itemEl.onclick
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}
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var icon = t.children('div.menu-icon');
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if (icon.length){
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var cc = [];
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var aa = icon.attr('class').split(' ');
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for(var i=0; i<aa.length; i++){
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if (aa[i] != 'menu-icon'){
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cc.push(aa[i]);
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}
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}
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item.iconCls = cc.join(' ');
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}
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return item;
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},
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findItem: function(jq, text){
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return findItem(jq[0], text);
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},
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/**
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* append menu item, the param contains following properties:
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* parent,id,text,iconCls,href,onclick
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* when parent property is assigned, append menu item to it
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*/
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appendItem: function(jq, param){
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return jq.each(function(){
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appendItem(this, param);
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});
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},
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removeItem: function(jq, itemEl){
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return jq.each(function(){
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removeItem(this, itemEl);
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});
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},
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enableItem: function(jq, itemEl){
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return jq.each(function(){
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setDisabled(this, itemEl, false);
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});
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},
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disableItem: function(jq, itemEl){
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return jq.each(function(){
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setDisabled(this, itemEl, true);
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});
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}
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};
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$.fn.menu.parseOptions = function(target){
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return $.extend({}, $.parser.parseOptions(target, ['left','top',{minWidth:'number',hideOnUnhover:'boolean'}]));
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};
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$.fn.menu.defaults = {
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zIndex:110000,
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left: 0,
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top: 0,
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minWidth: 120,
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hideOnUnhover: true, // Automatically hides the menu when mouse exits it
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onShow: function(){},
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onHide: function(){},
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onClick: function(item){}
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};
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})(jQuery);
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