Module javafx.controls

Package javafx.scene.control

Class Menu

java.lang.Object

javafx.scene.control.MenuItem

javafx.scene.control.Menu

All Implemented Interfaces:

Styleable, EventTarget

@DefaultProperty("items")
public class Menu
extends MenuItem

A popup menu of actionable items which is displayed to the user only upon request. When a menu is visible, in most use cases, the user can select one menu item before the menu goes back to its hidden state. This means the menu is a good place to put important functionality that does not necessarily need to be visible at all times to the user.

Menus are typically placed in a MenuBar, or as a submenu of another Menu. If the intention is to offer a context menu when the user right-clicks in a certain area of their user interface, then this is the wrong control to use. This is because when Menu is added to the scenegraph, it has a visual representation that will result in it appearing on screen. Instead, ContextMenu should be used in this circumstance.

Creating a Menu and inserting it into a MenuBar is easy, as shown below:

 Menu menu1 = new Menu("File");
 MenuBar menuBar = new MenuBar(menu1);

A Menu is a subclass of MenuItem which means that it can be inserted into a Menu's items ObservableList, resulting in a submenu being created:

 MenuItem menu12 = new MenuItem("Open");
 menu1.getItems().add(menu12);

The items ObservableList allows for any MenuItem type to be inserted, including its subclasses Menu, MenuItem, RadioMenuItem, CheckMenuItem, CustomMenuItem and SeparatorMenuItem. In order to insert an arbitrary Node to a Menu, a CustomMenuItem can be used. One exception to this general rule is that SeparatorMenuItem could be used for inserting a separator.

Since:

JavaFX 2.0

See Also:

MenuBar, MenuItem

Property Summary

Properties

Type	Property	Description
ObjectProperty<EventHandler<Event>>	onHidden	Called just after the ContextMenu has been hidden.
ObjectProperty<EventHandler<Event>>	onHiding	Called just prior to the ContextMenu being hidden.
ObjectProperty<EventHandler<Event>>	onShowing	Called just prior to the ContextMenu being shown, even if the menu has no items to show.
ObjectProperty<EventHandler<Event>>	onShown	Called just after the ContextMenu is shown.
ReadOnlyBooleanProperty	showing	Indicates whether the ContextMenu is currently visible.

Properties declared in class javafx.scene.control.MenuItem

accelerator, disable, graphic, id, mnemonicParsing, onAction, onMenuValidation, parentMenu, parentPopup, style, text, visible

Field Summary

Fields

Modifier and Type	Field	Description
static EventType<Event>	ON_HIDDEN	Called when the contextMenu for this menu is hidden.
static EventType<Event>	ON_HIDING	Called when the contextMenu for this menu will be hidden.
static EventType<Event>	ON_SHOWING	Called when the contextMenu for this menu will be shown.
static EventType<Event>	ON_SHOWN	Called when the contextMenu for this menu shows.

Fields declared in class javafx.scene.control.MenuItem

MENU_VALIDATION_EVENT

Constructor Summary

Constructors

Constructor	Description
Menu()	Constructs a Menu with an empty string for its display text.
Menu(String text)	Constructs a Menu and sets the display text with the specified text.
Menu(String text, Node graphic)	Constructs a Menu and sets the display text with the specified text and sets the graphic Node to the given node.
Menu(String text, Node graphic, MenuItem... items)	Constructs a Menu and sets the display text with the specified text, the graphic Node to the given node, and inserts the given items into the items list.

Method Summary

Modifier and Type	Method	Description
ObservableList<MenuItem>	getItems()	The items to show within this menu.
EventHandler<Event>	getOnHidden()	Gets the value of the property onHidden.
EventHandler<Event>	getOnHiding()	Gets the value of the property onHiding.
EventHandler<Event>	getOnShowing()	Gets the value of the property onShowing.
EventHandler<Event>	getOnShown()	Gets the value of the property onShown.
void	hide()	Hides the ContextMenu if it was previously showing, and any showing submenus.
boolean	isShowing()	Gets the value of the property showing.
ObjectProperty<EventHandler<Event>>	onHiddenProperty()	Called just after the ContextMenu has been hidden.
ObjectProperty<EventHandler<Event>>	onHidingProperty()	Called just prior to the ContextMenu being hidden.
ObjectProperty<EventHandler<Event>>	onShowingProperty()	Called just prior to the ContextMenu being shown, even if the menu has no items to show.
ObjectProperty<EventHandler<Event>>	onShownProperty()	Called just after the ContextMenu is shown.
void	setOnHidden(EventHandler<Event> value)	Sets the value of the property onHidden.
void	setOnHiding(EventHandler<Event> value)	Sets the value of the property onHiding.
void	setOnShowing(EventHandler<Event> value)	Sets the value of the property onShowing.
void	setOnShown(EventHandler<Event> value)	Sets the value of the property onShown.
void	show()	If the Menu is not disabled and the ContextMenu is not already showing, then this will cause the ContextMenu to be shown.
ReadOnlyBooleanProperty	showingProperty()	Indicates whether the ContextMenu is currently visible.

Methods declared in class javafx.scene.control.MenuItem

acceleratorProperty, addEventHandler, buildEventDispatchChain, disableProperty, fire, getAccelerator, getCssMetaData, getGraphic, getId, getOnAction, getOnMenuValidation, getParentMenu, getParentPopup, getProperties, getPseudoClassStates, getStyle, getStyleableParent, getStyleClass, getText, getTypeSelector, getUserData, graphicProperty, idProperty, isDisable, isMnemonicParsing, isVisible, mnemonicParsingProperty, onActionProperty, onMenuValidationProperty, parentMenuProperty, parentPopupProperty, removeEventHandler, setAccelerator, setDisable, setGraphic, setId, setMnemonicParsing, setOnAction, setOnMenuValidation, setParentMenu, setParentPopup, setStyle, setText, setUserData, setVisible, styleProperty, textProperty, visibleProperty

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods declared in interface javafx.css.Styleable

getStyleableNode

Property Details

showing

public final ReadOnlyBooleanProperty showingProperty

Indicates whether the ContextMenu is currently visible.

Default value:

false

See Also:

isShowing()

onShowing

public final ObjectProperty<EventHandler<Event>> onShowingProperty

Called just prior to the ContextMenu being shown, even if the menu has no items to show. Note however that this won't be called if the menu does not have a valid anchor node.

See Also:

getOnShowing(), setOnShowing(EventHandler)

onShown

public final ObjectProperty<EventHandler<Event>> onShownProperty

Called just after the ContextMenu is shown.

See Also:

getOnShown(), setOnShown(EventHandler)

onHiding

public final ObjectProperty<EventHandler<Event>> onHidingProperty

Called just prior to the ContextMenu being hidden.

See Also:

getOnHiding(), setOnHiding(EventHandler)

onHidden

public final ObjectProperty<EventHandler<Event>> onHiddenProperty

Called just after the ContextMenu has been hidden.

See Also:

getOnHidden(), setOnHidden(EventHandler)

Field Details

ON_SHOWING

public static final EventType<Event> ON_SHOWING

Called when the contextMenu for this menu will be shown. However if the contextMenu is empty then this will not be called.

ON_SHOWN

public static final EventType<Event> ON_SHOWN

Called when the contextMenu for this menu shows. However if the contextMenu is empty then this will not be called.

ON_HIDING

public static final EventType<Event> ON_HIDING

Called when the contextMenu for this menu will be hidden. However if the contextMenu is empty then this will not be called.

ON_HIDDEN

public static final EventType<Event> ON_HIDDEN

Called when the contextMenu for this menu is hidden. However if the contextMenu is empty then this will not be called.

Constructor Details

Menu

public Menu()

Constructs a Menu with an empty string for its display text.

Since:

JavaFX 2.2

Menu

public Menu(String text)

Constructs a Menu and sets the display text with the specified text.

Parameters:

text - the text to display on the menu button

Menu

public Menu(String text,
 Node graphic)

Constructs a Menu and sets the display text with the specified text and sets the graphic Node to the given node.

Parameters:

text - the text to display on the menu button

graphic - the graphic to display on the menu button

Menu

public Menu(String text,
 Node graphic,
 MenuItem... items)

Constructs a Menu and sets the display text with the specified text, the graphic Node to the given node, and inserts the given items into the items list.

Parameters:

text - the text to display on the menu button

graphic - the graphic to display on the menu button

items - The items to display in the popup menu.

Since:

JavaFX 8u40

Method Details

isShowing

public final boolean isShowing()

Gets the value of the property showing.

Property description:

Indicates whether the ContextMenu is currently visible.

Default value:

false

showingProperty

public final ReadOnlyBooleanProperty showingProperty()

Indicates whether the ContextMenu is currently visible.

Default value:

false

See Also:

isShowing()

onShowingProperty

public final ObjectProperty<EventHandler<Event>> onShowingProperty()

Called just prior to the ContextMenu being shown, even if the menu has no items to show. Note however that this won't be called if the menu does not have a valid anchor node.

See Also:

getOnShowing(), setOnShowing(EventHandler)

setOnShowing

public final void setOnShowing(EventHandler<Event> value)

Sets the value of the property onShowing.

Property description:

Called just prior to the ContextMenu being shown, even if the menu has no items to show. Note however that this won't be called if the menu does not have a valid anchor node.

getOnShowing

public final EventHandler<Event> getOnShowing()

Gets the value of the property onShowing.

Property description:

Called just prior to the ContextMenu being shown, even if the menu has no items to show. Note however that this won't be called if the menu does not have a valid anchor node.

onShownProperty

public final ObjectProperty<EventHandler<Event>> onShownProperty()

Called just after the ContextMenu is shown.

See Also:

getOnShown(), setOnShown(EventHandler)

setOnShown

public final void setOnShown(EventHandler<Event> value)

Sets the value of the property onShown.

Property description:

Called just after the ContextMenu is shown.

getOnShown

public final EventHandler<Event> getOnShown()

Gets the value of the property onShown.

Property description:

Called just after the ContextMenu is shown.

onHidingProperty

public final ObjectProperty<EventHandler<Event>> onHidingProperty()

Called just prior to the ContextMenu being hidden.

See Also:

getOnHiding(), setOnHiding(EventHandler)

setOnHiding

public final void setOnHiding(EventHandler<Event> value)

Sets the value of the property onHiding.

Property description:

Called just prior to the ContextMenu being hidden.

getOnHiding

public final EventHandler<Event> getOnHiding()

Gets the value of the property onHiding.

Property description:

Called just prior to the ContextMenu being hidden.

onHiddenProperty

public final ObjectProperty<EventHandler<Event>> onHiddenProperty()

Called just after the ContextMenu has been hidden.

See Also:

getOnHidden(), setOnHidden(EventHandler)

setOnHidden

public final void setOnHidden(EventHandler<Event> value)

Sets the value of the property onHidden.

Property description:

Called just after the ContextMenu has been hidden.

getOnHidden

public final EventHandler<Event> getOnHidden()

Gets the value of the property onHidden.

Property description:

Called just after the ContextMenu has been hidden.

getItems

public final ObservableList<MenuItem> getItems()

The items to show within this menu. If this ObservableList is modified at runtime, the Menu will update as expected.

Returns:

the list of items

show

public void show()

If the Menu is not disabled and the ContextMenu is not already showing, then this will cause the ContextMenu to be shown.

hide

public void hide()

Hides the ContextMenu if it was previously showing, and any showing submenus. If this menu is not showing, then invoking this function has no effect.