57 lines
1.5 KiB
Racket
57 lines
1.5 KiB
Racket
#lang scribble/doc
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@(require "common.rkt")
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@definterface/title[menu-item<%> ()]{
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A @racket[menu-item<%>] object is an element within a @racket[menu%],
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@racket[popup-menu%], or @racket[menu-bar%]. Operations that affect
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the parent --- such as renaming the item, deleting the item, or
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adding a check beside the item --- are accomplished via the
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@racket[menu-item<%>] object.
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A menu item is either a @racket[separator-menu-item%] object (merely
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a separator), or a @racket[labelled-menu-item<%>] object; the latter
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is more specifically an instance of either @racket[menu-item%] (a
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plain menu item), @racket[checkable-menu-item%] (a checkable menu
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item), or @racket[menu%] (a submenu).
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@defmethod[(delete)
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void?]{
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Removes the item from its parent. If the menu item is already deleted,
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@method[menu-item<%> delete] has no effect.
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See also @method[menu-item<%> restore].
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}
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@defmethod[(get-parent)
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(or/c (is-a?/c menu%) (is-a?/c popup-menu%) (is-a?/c menu-bar%))]{
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Returns the menu, popup menu, or menu bar containing the item. The
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parent for a menu item is specified when the menu item is created,
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and it cannot be changed.
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}
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@defmethod[(is-deleted?)
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boolean?]{
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Returns @racket[#t] if the menu item is deleted from its parent,
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@racket[#f] otherwise.
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}
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@defmethod[(restore)
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void?]{
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Adds a deleted item back into its parent. The item is always restored
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to the end of the parent, regardless of its original position. If the
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item is not currently deleted, @method[menu-item<%> restore] has no
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effect.
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}}
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