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90 lines
2.4 KiB
JavaScript

define([
"dojo/_base/declare", // declare
"dojo/keys", // keys.DOWN_ARROW
"./_MenuBase",
"dojo/text!./templates/MenuBar.html"
], function(declare, keys, _MenuBase, template){
// module:
// dijit/MenuBar
return declare("dijit.MenuBar", _MenuBase, {
// summary:
// A menu bar, listing menu choices horizontally, like the "File" menu in most desktop applications
templateString: template,
baseClass: "dijitMenuBar",
// By default open popups for MenuBar instantly
popupDelay: 0,
// _isMenuBar: [protected] Boolean
// This is a MenuBar widget, not a (vertical) Menu widget.
_isMenuBar: true,
// parameter to dijit.popup.open() about where to put popup (relative to this.domNode)
_orient: ["below"],
_moveToPopup: function(/*Event*/ evt){
// summary:
// This handles the down arrow key, opening a submenu if one exists.
// Unlike _MenuBase._moveToPopup(), will never move to the next item in the MenuBar.
// tags:
// private
if(this.focusedChild && this.focusedChild.popup && !this.focusedChild.disabled){
this.onItemClick(this.focusedChild, evt);
}
},
focusChild: function(item){
// Overload focusChild so that whenever a new item is focused and the menu is active, open its submenu immediately.
this.inherited(arguments);
if(this.activated && item.popup && !item.disabled){
this._openItemPopup(item, true);
}
},
_onChildDeselect: function(item){
// override _MenuBase._onChildDeselect() to close submenu immediately
if(this.currentPopupItem == item){
this.currentPopupItem = null;
item._closePopup(); // this calls onClose
}
this.inherited(arguments);
},
// Arrow key navigation
_onLeftArrow: function(){
this.focusPrev();
},
_onRightArrow: function(){
this.focusNext();
},
_onDownArrow: function(/*Event*/ evt){
this._moveToPopup(evt);
},
_onUpArrow: function(){
},
onItemClick: function(/*dijit/_WidgetBase*/ item, /*Event*/ evt){
// summary:
// Handle clicks on an item. Also called by _moveToPopup() due to a down-arrow key on the item.
// Cancels a dropdown if already open and click is either mouse or space/enter.
// Don't close dropdown due to down arrow.
// tags:
// private
if(item.popup && item.popup.isShowingNow && (!/^key/.test(evt.type) || evt.keyCode !== keys.DOWN_ARROW)){
item.focusNode.focus();
this._cleanUp(true);
}else{
this.inherited(arguments);
}
}
});
});