<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>Keyboard Navigation in Menu - jQuery EasyUI Demo</title>
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<link rel="stylesheet" type="text/css" href="../../themes/default/easyui.css">
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<link rel="stylesheet" type="text/css" href="../../themes/icon.css">
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<link rel="stylesheet" type="text/css" href="../demo.css">
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<script type="text/javascript" src="../../jquery.min.js"></script>
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<script type="text/javascript" src="../../jquery.easyui.min.js"></script>
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</head>
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<body>
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<h2>Keyboard Navigation in Menu</h2>
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<p>Press Alt+W to focus the menu. Once the menu get focus, you will be able to navigate menu using keyboard keys.</p>
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<div style="margin:20px 0;"></div>
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<div class="easyui-panel" title="Menu" style="width:150px;">
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<div id="mm-nav" data-options="inline:true" style="width:100%">
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<div onclick="javascript:alert('new')">New</div>
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<div>
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<span>Open</span>
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<div style="width:150px;">
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<div><b>Word</b></div>
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<div>Excel</div>
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<div>PowerPoint</div>
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<div>
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<span>M1</span>
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<div style="width:120px;">
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<div>sub1</div>
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<div>sub2</div>
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<div>
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<span>Sub</span>
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<div style="width:80px;">
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<div>sub21</div>
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<div>sub22</div>
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<div>sub23</div>
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</div>
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</div>
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<div>sub3</div>
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</div>
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</div>
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<div>
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<span>Window Demos</span>
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<div style="width:120px;">
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<div>Window</div>
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<div>Dialog</div>
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<div>EasyUI</div>
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</div>
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</div>
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</div>
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</div>
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<div data-options="iconCls:'icon-save'">Save</div>
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<div data-options="iconCls:'icon-print',disabled:true">Print</div>
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<div class="menu-sep"></div>
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<div>Exit</div>
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</div>
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</div>
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<script type="text/javascript">
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(function($){
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function getParentMenu(rootMenu, menu){
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return findParent(rootMenu);
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function findParent(pmenu){
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var p = undefined;
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$(pmenu).find('.menu-item').each(function(){
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if (!p && this.submenu){
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if ($(this.submenu)[0] == $(menu)[0]){
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p = pmenu;
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} else {
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p = findParent(this.submenu);
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}
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}
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});
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return p;
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}
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}
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function getParentItem(pmenu, menu){
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var item = undefined;
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$(pmenu).find('.menu-item').each(function(){
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if ($(this.submenu)[0] == $(menu)[0]){
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item = $(this);
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return false;
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}
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});
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return item;
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}
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$.extend($.fn.menu.methods, {
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enableNav: function(jq, rootMenu){
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var firstItemSelector = '.menu-item:not(.menu-item-disabled):first';
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var lastItemSelector = '.menu-item:not(.menu-item-disabled):last';
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return jq.each(function(){
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var menu = $(this);
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rootMenu = $(rootMenu).length ? $(rootMenu) : menu;
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menu.attr('tabindex','0').css('outline','none').unbind('.menunav').bind('keydown.menunav', function(e){
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var item = $(this).find('.menu-active');
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switch(e.keyCode){
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case 13: // enter
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item.trigger('click');
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break;
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case 27: // esc
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rootMenu.find('.menu-active').trigger('mouseleave');
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break;
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case 38: // up
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var prev = item.length ? item.prevAll(firstItemSelector) : menu.find(lastItemSelector);
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prev.trigger('mouseenter');
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return false;
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case 40: // down
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var next = item.length ? item.nextAll(firstItemSelector) : menu.find(firstItemSelector);
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next.trigger('mouseenter');
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return false;
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case 37: // left
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var pmenu = getParentMenu(rootMenu, menu);
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if (pmenu){
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item.trigger('mouseleave');
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var pitem = getParentItem(pmenu, menu);
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if (pitem){
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pitem.trigger('mouseenter');
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}
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pmenu.focus();
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}
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return false;
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case 39: // right
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if (item.length && item[0].submenu){
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$(item[0].submenu).menu('enableNav', rootMenu).find(firstItemSelector).trigger('mouseenter');
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$(item[0].submenu).focus();
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}
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return false;
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}
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});
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});
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}
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});
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})(jQuery);
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$(function(){
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$('#mm-nav').menu().menu('enableNav');
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$(document).keydown(function(e){
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if (e.altKey && e.keyCode == 87){
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$('#mm-nav').focus();
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}
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})
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})
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</script>
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</body>
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</html>
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