source: Dev/branches/rest-dojo-ui/client/dijit/MenuItem.js @ 274

define([
        "dojo/_base/declare", // declare
        "dojo/dom", // dom.setSelectable
        "dojo/dom-attr", // domAttr.set
        "dojo/dom-class", // domClass.toggle
        "dojo/_base/event", // event.stop
        "dojo/_base/kernel", // kernel.deprecated
        "dojo/_base/sniff", // has("ie")
        "./_Widget",
        "./_TemplatedMixin",
        "./_Contained",
        "./_CssStateMixin",
        "dojo/text!./templates/MenuItem.html"
], function(declare, dom, domAttr, domClass, event, kernel, has,
                        _Widget, _TemplatedMixin, _Contained, _CssStateMixin, template){

/*=====
        var _Widget = dijit._Widget;
        var _TemplatedMixin = dijit._TemplatedMixin;
        var _Contained = dijit._Contained;
        var _CssStateMixin = dijit._CssStateMixin;
=====*/

        // module:
        //              dijit/MenuItem
        // summary:
        //              A line item in a Menu Widget


        return declare("dijit.MenuItem",
                [_Widget, _TemplatedMixin, _Contained, _CssStateMixin],
                {
                // summary:
                //              A line item in a Menu Widget

                // Make 3 columns
                // icon, label, and expand arrow (BiDi-dependent) indicating sub-menu
                templateString: template,

                baseClass: "dijitMenuItem",

                // label: String
                //              Menu text
                label: '',
                _setLabelAttr: { node: "containerNode", type: "innerHTML" },

                // iconClass: String
                //              Class to apply to DOMNode to make it display an icon.
                iconClass: "dijitNoIcon",
                _setIconClassAttr: { node: "iconNode", type: "class" },

                // accelKey: String
                //              Text for the accelerator (shortcut) key combination.
                //              Note that although Menu can display accelerator keys there
                //              is no infrastructure to actually catch and execute these
                //              accelerators.
                accelKey: "",

                // disabled: Boolean
                //              If true, the menu item is disabled.
                //              If false, the menu item is enabled.
                disabled: false,

                _fillContent: function(/*DomNode*/ source){
                        // If button label is specified as srcNodeRef.innerHTML rather than
                        // this.params.label, handle it here.
                        if(source && !("label" in this.params)){
                                this.set('label', source.innerHTML);
                        }
                },

                buildRendering: function(){
                        this.inherited(arguments);
                        var label = this.id+"_text";
                        domAttr.set(this.containerNode, "id", label);
                        if(this.accelKeyNode){
                                domAttr.set(this.accelKeyNode, "id", this.id + "_accel");
                                label += " " + this.id + "_accel";
                        }
                        this.domNode.setAttribute("aria-labelledby", label);
                        dom.setSelectable(this.domNode, false);
                },

                _onHover: function(){
                        // summary:
                        //              Handler when mouse is moved onto menu item
                        // tags:
                        //              protected
                        this.getParent().onItemHover(this);
                },

                _onUnhover: function(){
                        // summary:
                        //              Handler when mouse is moved off of menu item,
                        //              possibly to a child menu, or maybe to a sibling
                        //              menuitem or somewhere else entirely.
                        // tags:
                        //              protected

                        // if we are unhovering the currently selected item
                        // then unselect it
                        this.getParent().onItemUnhover(this);

                        // When menu is hidden (collapsed) due to clicking a MenuItem and having it execute,
                        // FF and IE don't generate an onmouseout event for the MenuItem.
                        // So, help out _CssStateMixin in this case.
                        this._set("hovering", false);
                },

                _onClick: function(evt){
                        // summary:
                        //              Internal handler for click events on MenuItem.
                        // tags:
                        //              private
                        this.getParent().onItemClick(this, evt);
                        event.stop(evt);
                },

                onClick: function(/*Event*/){
                        // summary:
                        //              User defined function to handle clicks
                        // tags:
                        //              callback
                },

                focus: function(){
                        // summary:
                        //              Focus on this MenuItem
                        try{
                                if(has("ie") == 8){
                                        // needed for IE8 which won't scroll TR tags into view on focus yet calling scrollIntoView creates flicker (#10275)
                                        this.containerNode.focus();
                                }
                                this.focusNode.focus();
                        }catch(e){
                                // this throws on IE (at least) in some scenarios
                        }
                },

                _onFocus: function(){
                        // summary:
                        //              This is called by the focus manager when focus
                        //              goes to this MenuItem or a child menu.
                        // tags:
                        //              protected
                        this._setSelected(true);
                        this.getParent()._onItemFocus(this);

                        this.inherited(arguments);
                },

                _setSelected: function(selected){
                        // summary:
                        //              Indicate that this node is the currently selected one
                        // tags:
                        //              private

                        /***
                         * TODO: remove this method and calls to it, when _onBlur() is working for MenuItem.
                         * Currently _onBlur() gets called when focus is moved from the MenuItem to a child menu.
                         * That's not supposed to happen, but the problem is:
                         * In order to allow dijit.popup's getTopPopup() to work,a sub menu's popupParent
                         * points to the parent Menu, bypassing the parent MenuItem... thus the
                         * MenuItem is not in the chain of active widgets and gets a premature call to
                         * _onBlur()
                         */

                        domClass.toggle(this.domNode, "dijitMenuItemSelected", selected);
                },

                setLabel: function(/*String*/ content){
                        // summary:
                        //              Deprecated.   Use set('label', ...) instead.
                        // tags:
                        //              deprecated
                        kernel.deprecated("dijit.MenuItem.setLabel() is deprecated.  Use set('label', ...) instead.", "", "2.0");
                        this.set("label", content);
                },

                setDisabled: function(/*Boolean*/ disabled){
                        // summary:
                        //              Deprecated.   Use set('disabled', bool) instead.
                        // tags:
                        //              deprecated
                        kernel.deprecated("dijit.Menu.setDisabled() is deprecated.  Use set('disabled', bool) instead.", "", "2.0");
                        this.set('disabled', disabled);
                },
                _setDisabledAttr: function(/*Boolean*/ value){
                        // summary:
                        //              Hook for attr('disabled', ...) to work.
                        //              Enable or disable this menu item.

                        this.focusNode.setAttribute('aria-disabled', value ? 'true' : 'false');
                        this._set("disabled", value);
                },
                _setAccelKeyAttr: function(/*String*/ value){
                        // summary:
                        //              Hook for attr('accelKey', ...) to work.
                        //              Set accelKey on this menu item.

                        this.accelKeyNode.style.display=value?"":"none";
                        this.accelKeyNode.innerHTML=value;
                        //have to use colSpan to make it work in IE
                        domAttr.set(this.containerNode,'colSpan',value?"1":"2");

                        this._set("accelKey", value);
                }
        });
});