/*
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This file is part of Ext JS 4.2
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Copyright (c) 2011-2013 Sencha Inc
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Contact: http://www.sencha.com/contact
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GNU General Public License Usage
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This file may be used under the terms of the GNU General Public License version 3.0 as
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published by the Free Software Foundation and appearing in the file LICENSE included in the
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packaging of this file.
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Please review the following information to ensure the GNU General Public License version 3.0
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requirements will be met: http://www.gnu.org/copyleft/gpl.html.
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If you are unsure which license is appropriate for your use, please contact the sales department
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at http://www.sencha.com/contact.
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Build date: 2013-05-16 14:36:50 (f9be68accb407158ba2b1be2c226a6ce1f649314)
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*/
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/**
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* @private
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*/
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Ext.define('Ext.menu.KeyNav', {
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extend: 'Ext.util.KeyNav',
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requires: ['Ext.FocusManager'],
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constructor: function(config) {
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var me = this;
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me.menu = config.target;
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me.callParent([Ext.apply({
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down: me.down,
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enter: me.enter,
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esc: me.escape,
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left: me.left,
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right: me.right,
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space: me.enter,
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tab: me.tab,
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up: me.up
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}, config)]);
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},
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down: function(e) {
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var me = this,
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fi = me.menu.focusedItem;
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if (fi && e.getKey() == Ext.EventObject.DOWN && me.isWhitelisted(fi)) {
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return true;
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}
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me.focusNextItem(1);
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},
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enter: function(e) {
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var menu = this.menu,
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focused = menu.focusedItem;
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if (menu.activeItem) {
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menu.onClick(e);
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} else if (focused && focused.isFormField) {
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// prevent stopEvent being called
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return true;
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}
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},
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escape: function(e) {
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Ext.menu.Manager.hideAll();
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},
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focusNextItem: function(step) {
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var menu = this.menu,
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items = menu.items,
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focusedItem = menu.focusedItem,
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startIdx = focusedItem ? items.indexOf(focusedItem) : -1,
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idx = startIdx + step,
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len = items.length,
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count = 0,
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item;
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// Limit the count, since we might not be able to find something to focus
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while (count < len && idx !== startIdx) {
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if (idx < 0) {
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idx = len - 1;
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} else if (idx >= len) {
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idx = 0;
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}
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item = items.getAt(idx);
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if (menu.canActivateItem(item)) {
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menu.setActiveItem(item);
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break;
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}
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idx += step;
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++count;
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}
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},
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isWhitelisted: function(item) {
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return Ext.FocusManager.isWhitelisted(item);
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},
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left: function(e) {
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var menu = this.menu,
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fi = menu.focusedItem;
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if (fi && this.isWhitelisted(fi)) {
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return true;
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}
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menu.hide();
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if (menu.parentMenu) {
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menu.parentMenu.focus();
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}
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},
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right: function(e) {
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var menu = this.menu,
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fi = menu.focusedItem,
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ai = menu.activeItem,
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am;
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if (fi && this.isWhitelisted(fi)) {
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return true;
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}
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if (ai) {
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am = menu.activeItem.menu;
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if (am) {
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ai.expandMenu(0);
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am.setActiveItem(am.child(':focusable'));
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}
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}
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},
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tab: function(e) {
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var me = this;
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if (e.shiftKey) {
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me.up(e);
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} else {
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me.down(e);
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}
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},
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up: function(e) {
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var me = this,
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fi = me.menu.focusedItem;
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if (fi && e.getKey() == Ext.EventObject.UP && me.isWhitelisted(fi)) {
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return true;
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}
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me.focusNextItem(-1);
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}
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});
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