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Graphics.UI.Gtk.MenuComboToolbar.MenuShell

Portability | portable (depends on GHC)
Stability | provisional
Maintainer | gtk2hs-users@lists.sourceforge.net

Contents

Detail
Class Hierarchy
Types
Methods
Attributes
Signals

Description
A base class for menu objects
Synopsis

data MenuShell
class ContainerClass o => MenuShellClass o
castToMenuShell :: GObjectClass obj => obj -> MenuShell
toMenuShell :: MenuShellClass o => o -> MenuShell
menuShellAppend :: (MenuShellClass self, MenuItemClass child) => self -> child -> IO ()
menuShellPrepend :: (MenuShellClass self, MenuItemClass child) => self -> child -> IO ()
menuShellInsert :: (MenuShellClass self, MenuItemClass child) => self -> child -> Int -> IO ()
menuShellDeactivate :: MenuShellClass self => self -> IO ()
menuShellActivateItem :: (MenuShellClass self, MenuItemClass menuItem) => self -> menuItem -> Bool -> IO ()
menuShellSelectItem :: (MenuShellClass self, MenuItemClass menuItem) => self -> menuItem -> IO ()
menuShellDeselect :: MenuShellClass self => self -> IO ()
menuShellSelectFirst :: MenuShellClass self => self -> Bool -> IO ()
menuShellCancel :: MenuShellClass self => self -> IO ()
menuShellSetTakeFocus :: MenuShellClass self => self -> Bool -> IO ()
menuShellGetTakeFocus :: MenuShellClass self => self -> IO Bool
menuShellTakeFocus :: MenuShellClass self => Attr self Bool
onActivateCurrent :: MenuShellClass self => self -> (Bool -> IO ()) -> IO (ConnectId self)
afterActivateCurrent :: MenuShellClass self => self -> (Bool -> IO ()) -> IO (ConnectId self)
onCancel :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
afterCancel :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
onDeactivated :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
afterDeactivated :: MenuShellClass self => self -> IO () -> IO (ConnectId self)

data MenuDirectionType

= MenuDirParent
| MenuDirChild
| MenuDirNext
| MenuDirPrev

onMoveCurrent :: MenuShellClass self => self -> (MenuDirectionType -> IO ()) -> IO (ConnectId self)
afterMoveCurrent :: MenuShellClass self => self -> (MenuDirectionType -> IO ()) -> IO (ConnectId self)
onSelectionDone :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
afterSelectionDone :: MenuShellClass self => self -> IO () -> IO (ConnectId self)

Detail
A `MenuShell` is the abstract base class used to derive the `Menu` and `MenuBar` subclasses. A `MenuShell` is a container of `MenuItem` objects arranged in a list which can be navigated, selected, and activated by the user to perform application functions. A `MenuItem` can have a submenu associated with it, allowing for nested hierarchical menus.
Class Hierarchy

     |  GObject
     |   +----Object
     |         +----Widget
     |               +----Container
     |                     +----MenuShell
     |                           +----MenuBar
     |                           +----Menu

Types
data MenuShell

Instances

GObjectClass MenuShell
MenuShellClass MenuShell
ContainerClass MenuShell
WidgetClass MenuShell
ObjectClass MenuShell

class ContainerClass o => MenuShellClass o

Instances

MenuShellClass MenuBar
MenuShellClass Menu
MenuShellClass MenuShell

castToMenuShell :: GObjectClass obj => obj -> MenuShell
toMenuShell :: MenuShellClass o => o -> MenuShell
Methods
menuShellAppend

:: (MenuShellClass self, MenuItemClass child) |
=> self |
-> child | `child` - The `MenuItem` to add.
-> IO () |
Adds a new `MenuItem` to the end of the menu shell's item list.

menuShellPrepend

:: (MenuShellClass self, MenuItemClass child) |
=> self |
-> child | `child` - The `MenuItem` to add.
-> IO () |
Adds a new `MenuItem` to the beginning of the menu shell's item list.

menuShellInsert

:: (MenuShellClass self, MenuItemClass child) |
=> self |
-> child | `child` - The `MenuItem` to add.
-> Int | `position` - The position in the item list where `child` is added. Positions are numbered from 0 to n-1.
-> IO () |
Adds a new `MenuItem` to the menu shell's item list at the position indicated by `position`.

menuShellDeactivate :: MenuShellClass self => self -> IO ()
Deactivates the menu shell. Typically this results in the menu shell being erased from the screen.
menuShellActivateItem

:: (MenuShellClass self, MenuItemClass menuItem) |
=> self |
-> menuItem | `menuItem` - The `MenuItem` to activate.
-> Bool | `forceDeactivate` - If `True`, force the deactivation of the menu shell after the menu item is activated.
-> IO () |
Activates the menu item within the menu shell. If the menu was deactivated and `forceDeactivate` is set, the previously deactivated menu is reactivated.

menuShellSelectItem

:: (MenuShellClass self, MenuItemClass menuItem) |
=> self |
-> menuItem | `menuItem` - The `MenuItem` to select.
-> IO () |
Selects the menu item from the menu shell.

menuShellDeselect :: MenuShellClass self => self -> IO ()
Deselects the currently selected item from the menu shell, if any.
menuShellSelectFirst

:: MenuShellClass self |
=> self |
-> Bool | `searchSensitive` - if `True`, search for the first selectable menu item, otherwise select nothing if the first item isn't sensitive. This should be `False` if the menu is being popped up initially.
-> IO () |

Select the first visible or selectable child of the menu shell; don't select tearoff items unless the only item is a tearoff item.

- Available since Gtk+ version 2.2

menuShellCancel :: MenuShellClass self => self -> IO ()

Cancels the selection within the menu shell.

- Available since Gtk+ version 2.4

menuShellSetTakeFocus

:: MenuShellClass self |
=> self |
-> Bool | `takeFocus` - `True` if the menu shell should take the keyboard focus on popup.
-> IO () |

If `takeFocus` is `True` (the default) the menu shell will take the keyboard focus so that it will receive all keyboard events which is needed to enable keyboard navigation in menus.

Setting `takeFocus` to `False` is useful only for special applications like virtual keyboard implementations which should not take keyboard focus.

The `takeFocus` state of a menu or menu bar is automatically propagated to submenus whenever a submenu is popped up, so you don't have to worry about recursively setting it for your entire menu hierarchy. Only when programmatically picking a submenu and popping it up manually, the `takeFocus` property of the submenu needs to be set explicitely.

Note that setting it to `False` has side-effects:

If the focus is in some other app, it keeps the focus and keynav in the menu doesn't work. Consequently, keynav on the menu will only work if the focus is on some toplevel owned by the onscreen keyboard.

To avoid confusing the user, menus with `takeFocus` set to `False` should not display mnemonics or accelerators, since it cannot be guaranteed that they will work.

- Available since Gtk+ version 2.8

menuShellGetTakeFocus

:: MenuShellClass self |
=> self |
-> IO Bool | returns `True` if the menu shell will take the keyboard focus on popup.

Returns `True` if the menu shell will take the keyboard focus on popup.

- Available since Gtk+ version 2.8

Attributes
menuShellTakeFocus :: MenuShellClass self => Attr self Bool
A boolean that determines whether the menu and its submenus grab the keyboard focus. See `menuShellSetTakeFocus` and `menuShellGetTakeFocus`. Default value: `True`
Signals
onActivateCurrent :: MenuShellClass self => self -> (Bool -> IO ()) -> IO (ConnectId self)
afterActivateCurrent :: MenuShellClass self => self -> (Bool -> IO ()) -> IO (ConnectId self)
This signal is called if an item is activated. The boolean flag `hide` is True whenever the menu will behidden after this action.
onCancel :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
afterCancel :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
This signal will be emitted when a selection is aborted and thus does not lead to an activation. This is in contrast to the `selection` done signal which is always emitted.
onDeactivated :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
afterDeactivated :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
This signal is sent whenever the menu shell is deactivated (hidden).
data MenuDirectionType

From where was a menu item entered?
Constructors

MenuDirParent |
MenuDirChild |
MenuDirNext |
MenuDirPrev |

Instances

Enum MenuDirectionType
Eq MenuDirectionType
Show MenuDirectionType

onMoveCurrent :: MenuShellClass self => self -> (MenuDirectionType -> IO ()) -> IO (ConnectId self)
afterMoveCurrent :: MenuShellClass self => self -> (MenuDirectionType -> IO ()) -> IO (ConnectId self)
This signal is emitted for each move the cursor makes.
onSelectionDone :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
afterSelectionDone :: MenuShellClass self => self -> IO () -> IO (ConnectId self)
This signal is emitted when the user finished using the menu. Note that this signal is emitted even if no menu item was activated.
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