Upgrade to ExtJS 4.0.0 - Released 04/26/2011

[extjs.git] / src / menu / KeyNav.js

diff --git a/src/menu/KeyNav.js b/src/menu/KeyNav.js
new file mode 100644 (file)
index 0000000..62203fc
--- /dev/null
+++ b/src/menu/KeyNav.js
@@ -0,0 +1,130 @@
+/**
+ * @class Ext.menu.KeyNav
+ * @private
+ */
+Ext.define('Ext.menu.KeyNav', {
+    extend: 'Ext.util.KeyNav',
+
+    requires: ['Ext.FocusManager'],
+    
+    constructor: function(menu) {
+        var me = this;
+
+        me.menu = menu;
+        me.callParent([menu.el, {
+            down: me.down,
+            enter: me.enter,
+            esc: me.escape,
+            left: me.left,
+            right: me.right,
+            space: me.enter,
+            tab: me.tab,
+            up: me.up
+        }]);
+    },
+
+    down: function(e) {
+        var me = this,
+            fi = me.menu.focusedItem;
+
+        if (fi && e.getKey() == Ext.EventObject.DOWN && me.isWhitelisted(fi)) {
+            return true;
+        }
+        me.focusNextItem(1);
+    },
+
+    enter: function(e) {
+        var menu = this.menu;
+
+        if (menu.activeItem) {
+            menu.onClick(e);
+        }
+    },
+
+    escape: function(e) {
+        Ext.menu.Manager.hideAll();
+    },
+
+    focusNextItem: function(step) {
+        var menu = this.menu,
+            items = menu.items,
+            focusedItem = menu.focusedItem,
+            startIdx = focusedItem ? items.indexOf(focusedItem) : -1,
+            idx = startIdx + step;
+
+        while (idx != startIdx) {
+            if (idx < 0) {
+                idx = items.length - 1;
+            } else if (idx >= items.length) {
+                idx = 0;
+            }
+
+            var item = items.getAt(idx);
+            if (menu.canActivateItem(item)) {
+                menu.setActiveItem(item);
+                break;
+            }
+            idx += step;
+        }
+    },
+
+    isWhitelisted: function(item) {
+        return Ext.FocusManager.isWhitelisted(item);
+    },
+
+    left: function(e) {
+        var menu = this.menu,
+            fi = menu.focusedItem,
+            ai = menu.activeItem;
+
+        if (fi && this.isWhitelisted(fi)) {
+            return true;
+        }
+
+        menu.hide();
+        if (menu.parentMenu) {
+            menu.parentMenu.focus();
+        }
+    },
+
+    right: function(e) {
+        var menu = this.menu,
+            fi = menu.focusedItem,
+            ai = menu.activeItem,
+            am;
+
+        if (fi && this.isWhitelisted(fi)) {
+            return true;
+        }
+
+        if (ai) {
+            am = menu.activeItem.menu;
+            if (am) {
+                ai.expandMenu(0);
+                Ext.defer(function() {
+                    am.setActiveItem(am.items.getAt(0));
+                }, 25);
+            }
+        }
+    },
+
+    tab: function(e) {
+        var me = this;
+
+        if (e.shiftKey) {
+            me.up(e);
+        } else {
+            me.down(e);
+        }
+    },
+
+    up: function(e) {
+        var me = this,
+            fi = me.menu.focusedItem;
+
+        if (fi && e.getKey() == Ext.EventObject.UP && me.isWhitelisted(fi)) {
+            return true;
+        }
+        me.focusNextItem(-1);
+    }
+});
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