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<pre class="prettyprint lang-js"><span id='Ext-menu-KeyNav'>/**
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</span> * @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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<span id='Ext-menu-KeyNav-method-constructor'> constructor: function(config) {
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</span> 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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<span id='Ext-menu-KeyNav-method-down'> down: function(e) {
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</span> 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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<span id='Ext-menu-KeyNav-method-enter'> enter: function(e) {
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</span> 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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<span id='Ext-menu-KeyNav-method-escape'> escape: function(e) {
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</span> Ext.menu.Manager.hideAll();
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},
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<span id='Ext-menu-KeyNav-method-focusNextItem'> focusNextItem: function(step) {
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</span> 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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<span id='Ext-menu-KeyNav-method-isWhitelisted'> isWhitelisted: function(item) {
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</span> return Ext.FocusManager.isWhitelisted(item);
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},
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<span id='Ext-menu-KeyNav-method-left'> left: function(e) {
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</span> 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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<span id='Ext-menu-KeyNav-method-right'> right: function(e) {
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</span> 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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<span id='Ext-menu-KeyNav-method-tab'> tab: function(e) {
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</span> 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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<span id='Ext-menu-KeyNav-method-up'> up: function(e) {
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</span> 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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});</pre>
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