Class: cWebMenuBar

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The Web Framework menu bar container

Hierarchy

cObject
---cWebObject
------cWebBaseUIObject
---------cWebBaseDEOServer
------------cWebBaseControl
---------------cWebMenuBar

Library: Web Application Class Library

Package: cWebMenuBar.pkg

Mixins: cWebBaseMenu_mixin

Description

The cWebMenuBar class is used as a wrapper for your web application's menu. The menu bar is designed to host and group your pull-down menus into a bar located in the command bar area of your web application.



A menu bar should be located inside your application's command bar object (see cWebCommandbar). A command bar will contain, at most, one menu bar object (cWebMenuBar) and any number of toolbars (cWebToolBar). Menu bars and toolbars are, in turn, constructed from nested menu item objects (cWebMenuItem).

Sample

Object oMenuBar is a cWebMenuBar

    Object oFileMenu is a cWebMenuItem
        Set psCaption to "File"
        
        Object oClearMenuItem is a cWebMenuClear
        End_Object  
        
        Object oSaveMenuItem is a cWebMenuSave
        End_Object  
        
        Object oDeleteMenuItem is a cWebMenuDelete
        End_Object  
        
        Object oLoginMenuItem is a cWebMenuItem
            Set psCaption to "Log In"
            Set pbBeginGroup to True

            Procedure OnClick
                Send RequestLogin to ghoWebSessionManager
            End_Procedure
        End_Object
    End_Object

    Object oViewMenu is a cWebMenuItem
        Set psCaption to "Views"
        
        Object oCustomerMenuItem is a cWebMenuItemLoadView
            Set psCaption to "Customer Maintenance"
            Set psLoadViewOnClick to "oCustomers"
        End_Object
        
        Object oOrderMenuItem is a cWebMenuItemLoadView
            Set psCaption to "Order Entry"
            Set psLoadViewOnClick to "oOrders"
        End_Object
    End_Object
    
    Object oThemesMenu is a cWebMenuItem
        Set psCaption to "Themes"

        Object oModernSky is a cWebMenuItem
            Set psCaption to "Modern Sky"
            
            Procedure OnClick 
                WebSet psTheme of oWebApp to "Vdf_Modern_Sky"
            End_Procedure
        End_Object
    End_Object
End_Object

The above sample demonstrates a menu bar (cWebMenuBar) containing three pull-down menus: "File", "View" and "Theme". Each pull-down menu object and the menu items it contains are implemented by nested menu item objects (cWebMenuItem).

In some cases special subclasses of cWebMenuItem are used, for example cWebMenuSave. These subclasses are pre-fabricated to perform a single task (in this case request the focused view to save a record).

Object Name

The Web Framework uniquely identifies each web object via a combination of the object hierarchy (object nesting), and object name. This means that web object names must be unique within their parent (i.e. each sibling web object must have a unique name).

Object Placement

Your cWebMenuBar object must be placed within a command bar object (cWebCommandBar).