Module javafx.controls
Package javafx.scene.control

Class MenuItem

  • All Implemented Interfaces:
    Styleable, EventTarget
    Direct Known Subclasses:
    CheckMenuItem, CustomMenuItem, Menu, RadioMenuItem

    @IDProperty("id")
public class MenuItem
extends Object
implements EventTarget, Styleable

    MenuItem is intended to be used in conjunction with Menu to provide options to users. MenuItem serves as the base class for the bulk of JavaFX menus API. It has a display text property, as well as an optional graphic node that can be set on it. The accelerator property enables accessing the associated action in one keystroke. Also, as with the Button control, by using the setOnAction(javafx.event.EventHandler<javafx.event.ActionEvent>) method, you can have an instance of MenuItem perform any action you wish.

    Note: Whilst any size of graphic can be inserted into a MenuItem, the most commonly used size in most applications is 16x16 pixels. This is the recommended graphic dimension to use if you're using the default style provided by JavaFX.

    To create a MenuItem is simple: 

    
MenuItem menuItem = new MenuItem("Open");
menuItem.setOnAction(new EventHandler<ActionEvent>() {
    @Override public void handle(ActionEvent e) {
        System.out.println("Opening Database Connection...");
    }
});
menuItem.setGraphic(new ImageView(new Image("flower.png")));

    Refer to the Menu page to learn how to insert MenuItem into a menu instance. Briefly however, you can insert the MenuItem from the previous example into a Menu as such: 

    
final Menu menu = new Menu("File");
menu.getItems().add(menuItem);
    Since:
    JavaFX 2.0
    See Also:
    Menu

    • Field Detail

      • MENU_VALIDATION_EVENT

        public static final EventType<Event> MENU_VALIDATION_EVENT

        Called when a accelerator for the Menuitem is invoked

        Since:
        JavaFX 2.2

    • Constructor Detail

      • MenuItem

        public MenuItem​()
        Constructs a MenuItem with no display text.

      • MenuItem

        public MenuItem​(String text)
        Constructs a MenuItem and sets the display text with the specified text
        Parameters:
        text - the display text
        See Also:
        setText(java.lang.String)

    • Method Detail

      • setId

        public final void setId​(String value)
        Sets the value of the property id.
        Property description:
        The id of this MenuItem. This simple string identifier is useful for finding a specific MenuItem within the scene graph.

      • getId

        public final String getId​()
        Gets the value of the property id.
        Specified by:
        getId in interface Styleable
        Property description:
        The id of this MenuItem. This simple string identifier is useful for finding a specific MenuItem within the scene graph.
        Returns:
        the id of this Styleable

      • idProperty

        public final StringProperty idProperty​()
        The id of this MenuItem. This simple string identifier is useful for finding a specific MenuItem within the scene graph.
        See Also:
        getId(), setId(String)

      • setStyle

        public final void setStyle​(String value)
        Sets the value of the property style.
        Property description:
        A string representation of the CSS style associated with this specific MenuItem. This is analogous to the "style" attribute of an HTML element. Note that, like the HTML style attribute, this variable contains style properties and values and not the selector portion of a style rule.

      • getStyle

        public final String getStyle​()
        Gets the value of the property style.
        Specified by:
        getStyle in interface Styleable
        Property description:
        A string representation of the CSS style associated with this specific MenuItem. This is analogous to the "style" attribute of an HTML element. Note that, like the HTML style attribute, this variable contains style properties and values and not the selector portion of a style rule.
        Returns:
        a string representation of the CSS style associated with this specific Node

      • styleProperty

        public final StringProperty styleProperty​()
        A string representation of the CSS style associated with this specific MenuItem. This is analogous to the "style" attribute of an HTML element. Note that, like the HTML style attribute, this variable contains style properties and values and not the selector portion of a style rule.
        See Also:
        getStyle(), setStyle(String)

      • setParentMenu

        protected final void setParentMenu​(Menu value)
        Sets the value of the property parentMenu.
        Property description:
        This is the Menu in which this MenuItem exists. It is possible for an instance of this class to not have a parentMenu - this means that this instance is either:
        • Not yet associated with its parentMenu.
        • A 'root' Menu (i.e. it is a context menu, attached directly to a MenuBar, MenuButton, or any of the other controls that use Menu internally.

      • getParentMenu

        public final Menu getParentMenu​()
        Gets the value of the property parentMenu.
        Property description:
        This is the Menu in which this MenuItem exists. It is possible for an instance of this class to not have a parentMenu - this means that this instance is either:
        • Not yet associated with its parentMenu.
        • A 'root' Menu (i.e. it is a context menu, attached directly to a MenuBar, MenuButton, or any of the other controls that use Menu internally.

      • parentMenuProperty

        public final ReadOnlyObjectProperty<Menu> parentMenuProperty​()
        This is the Menu in which this MenuItem exists. It is possible for an instance of this class to not have a parentMenu - this means that this instance is either:
        • Not yet associated with its parentMenu.
        • A 'root' Menu (i.e. it is a context menu, attached directly to a MenuBar, MenuButton, or any of the other controls that use Menu internally.
        See Also:
        getParentMenu(), setParentMenu(Menu)

      • setParentPopup

        protected final void setParentPopup​(ContextMenu value)
        Sets the value of the property parentPopup.
        Property description:
        This is the ContextMenu in which this MenuItem exists.

      • getParentPopup

        public final ContextMenu getParentPopup​()
        Gets the value of the property parentPopup.
        Property description:
        This is the ContextMenu in which this MenuItem exists.

      • setText

        public final void setText​(String value)
        Sets the value of the property text.
        Property description:
        The text to display in the MenuItem.

      • getText

        public final String getText​()
        Gets the value of the property text.
        Property description:
        The text to display in the MenuItem.

      • setGraphic

        public final void setGraphic​(Node value)
        Sets the value of the property graphic.
        Property description:
        An optional graphic for the MenuItem. This will normally be an ImageView node, but there is no requirement for this to be the case.

      • getGraphic

        public final Node getGraphic​()
        Gets the value of the property graphic.
        Property description:
        An optional graphic for the MenuItem. This will normally be an ImageView node, but there is no requirement for this to be the case.

      • setOnAction

        public final void setOnAction​(EventHandler<ActionEvent> value)
        Sets the value of the property onAction.
        Property description:
        The action, which is invoked whenever the MenuItem is fired. This may be due to the user clicking on the button with the mouse, or by a touch event, or by a key press, or if the developer programatically invokes the fire() method.

      • getOnAction

        public final EventHandler<ActionEvent> getOnAction​()
        Gets the value of the property onAction.
        Property description:
        The action, which is invoked whenever the MenuItem is fired. This may be due to the user clicking on the button with the mouse, or by a touch event, or by a key press, or if the developer programatically invokes the fire() method.

      • setOnMenuValidation

        public final void setOnMenuValidation​(EventHandler<Event> value)
        Sets the value of the property onMenuValidation.
        Property description:
        The event handler that is associated with invocation of an accelerator for a MenuItem. This can happen when a key sequence for an accelerator is pressed. The event handler is also invoked when onShowing event handler is called.
        Since:
        JavaFX 2.2

      • getOnMenuValidation

        public final EventHandler<Event> getOnMenuValidation​()
        Gets the value of the property onMenuValidation.
        Property description:
        The event handler that is associated with invocation of an accelerator for a MenuItem. This can happen when a key sequence for an accelerator is pressed. The event handler is also invoked when onShowing event handler is called.
        Since:
        JavaFX 2.2

      • setDisable

        public final void setDisable​(boolean value)
        Sets the value of the property disable.
        Property description:
        Sets the individual disabled state of this MenuItem. Setting disable to true will cause this MenuItem to become disabled.

      • isDisable

        public final boolean isDisable​()
        Gets the value of the property disable.
        Property description:
        Sets the individual disabled state of this MenuItem. Setting disable to true will cause this MenuItem to become disabled.

      • disableProperty

        public final BooleanProperty disableProperty​()
        Sets the individual disabled state of this MenuItem. Setting disable to true will cause this MenuItem to become disabled.
        See Also:
        isDisable(), setDisable(boolean)

      • setVisible

        public final void setVisible​(boolean value)
        Sets the value of the property visible.
        Property description:
        Specifies whether this MenuItem should be rendered as part of the scene graph.

      • isVisible

        public final boolean isVisible​()
        Gets the value of the property visible.
        Property description:
        Specifies whether this MenuItem should be rendered as part of the scene graph.

      • setAccelerator

        public final void setAccelerator​(KeyCombination value)
        Sets the value of the property accelerator.
        Property description:
        The accelerator property enables accessing the associated action in one keystroke. It is a convenience offered to perform quickly a given action.

      • getAccelerator

        public final KeyCombination getAccelerator​()
        Gets the value of the property accelerator.
        Property description:
        The accelerator property enables accessing the associated action in one keystroke. It is a convenience offered to perform quickly a given action.

      • setMnemonicParsing

        public final void setMnemonicParsing​(boolean value)
        Sets the value of the property mnemonicParsing.
        Property description:
        MnemonicParsing property to enable/disable text parsing. If this is set to true, then the MenuItem text will be parsed to see if it contains the mnemonic parsing character '_'. When a mnemonic is detected the key combination will be determined based on the succeeding character, and the mnemonic added.

        The default value for MenuItem is true.

      • isMnemonicParsing

        public final boolean isMnemonicParsing​()
        Gets the value of the property mnemonicParsing.
        Property description:
        MnemonicParsing property to enable/disable text parsing. If this is set to true, then the MenuItem text will be parsed to see if it contains the mnemonic parsing character '_'. When a mnemonic is detected the key combination will be determined based on the succeeding character, and the mnemonic added.

        The default value for MenuItem is true.

      • mnemonicParsingProperty

        public final BooleanProperty mnemonicParsingProperty​()
        MnemonicParsing property to enable/disable text parsing. If this is set to true, then the MenuItem text will be parsed to see if it contains the mnemonic parsing character '_'. When a mnemonic is detected the key combination will be determined based on the succeeding character, and the mnemonic added.

        The default value for MenuItem is true.

        See Also:
        isMnemonicParsing(), setMnemonicParsing(boolean)

      • fire

        public void fire​()
        Fires a new ActionEvent.

      • addEventHandler

        public <E extends Event> void addEventHandler​(EventType<E> eventType,
                                              EventHandler<E> eventHandler)
        Registers an event handler to this MenuItem. The handler is called when the menu item receives an Event of the specified type during the bubbling phase of event delivery.
        Type Parameters:
        E - the specific event class of the handler
        Parameters:
        eventType - the type of the events to receive by the handler
        eventHandler - the handler to register
        Throws:
        NullPointerException - if the event type or handler is null

      • removeEventHandler

        public <E extends Event> void removeEventHandler​(EventType<E> eventType,
                                                 EventHandler<E> eventHandler)
        Unregisters a previously registered event handler from this MenuItem. One handler might have been registered for different event types, so the caller needs to specify the particular event type from which to unregister the handler.
        Type Parameters:
        E - the specific event class of the handler
        Parameters:
        eventType - the event type from which to unregister
        eventHandler - the handler to unregister
        Throws:
        NullPointerException - if the event type or handler is null

      • buildEventDispatchChain

        public EventDispatchChain buildEventDispatchChain​(EventDispatchChain tail)
        Construct an event dispatch chain for this target. The event dispatch chain contains event dispatchers which might be interested in processing of events targeted at this EventTarget. This event target is not automatically added to the chain, so if it wants to process events, it needs to add an EventDispatcher for itself to the chain.

        In the case the event target is part of some hierarchy, the chain for it is usually built from event dispatchers collected from the root of the hierarchy to the event target.

        The event dispatch chain is constructed by modifications to the provided initial event dispatch chain. The returned chain should have the initial chain at its end so the dispatchers should be prepended to the initial chain.

        The caller shouldn't assume that the initial chain remains unchanged nor that the returned value will reference a different chain.

        Specified by:
        buildEventDispatchChain in interface EventTarget
        Parameters:
        tail - the initial chain to build from
        Returns:
        the resulting event dispatch chain for this target

      • getUserData

        public Object getUserData​()
        Returns a previously set Object property, or null if no such property has been set using the setUserData(java.lang.Object) method.
        Returns:
        The Object that was previously set, or null if no property has been set or if null was set.

      • setUserData

        public void setUserData​(Object value)
        Convenience method for setting a single Object property that can be retrieved at a later date. This is functionally equivalent to calling the getProperties().put(Object key, Object value) method. This can later be retrieved by calling Node.getUserData().
        Parameters:
        value - The value to be stored - this can later be retrieved by calling Node.getUserData().

      • getProperties

        public ObservableMap<Object,Object> getProperties​()
        Returns an observable map of properties on this menu item for use primarily by application developers.
        Returns:
        an observable map of properties on this menu item for use primarily by application developers

      • getTypeSelector

        public String getTypeSelector​()
        The type of this Styleable that is to be used in selector matching. This is analogous to an "element" in HTML. (CSS Type Selector).
        Specified by:
        getTypeSelector in interface Styleable
        Returns:
        "MenuItem"
        Since:
        JavaFX 8.0

      • getStyleableParent

        public Styleable getStyleableParent​()
        Return the parent of this Styleable, or null if there is no parent.
        Specified by:
        getStyleableParent in interface Styleable
        Returns:
        getParentMenu(), or getParentPopup() if parentMenu is null
        Since:
        JavaFX 8.0

      • getPseudoClassStates

        public final ObservableSet<PseudoClass> getPseudoClassStates​()
        Return the pseudo-class state of this Styleable. CSS assumes this set is read-only.
        Specified by:
        getPseudoClassStates in interface Styleable
        Returns:
        the pseudo-class state
        Since:
        JavaFX 8.0

      • getCssMetaData

        public List<CssMetaData<? extends Styleable,?>> getCssMetaData​()
        Description copied from interface: Styleable
        The CssMetaData of this Styleable. This may be returned as an unmodifiable list.
        Specified by:
        getCssMetaData in interface Styleable
        Returns:
        the CssMetaData

      • getStyleableNode

        public Node getStyleableNode​()
        Returns the Node that represents this Styleable object. This method should be overridden in cases where the Styleable is not itself a Node, so that it may optionally return the relevant root node representation of itself. By default this method returns null, which can mean that either the Styleable itself is a Node, or if that is not the case, that the Styleable does not have a node representation available at the time of request.
        Specified by:
        getStyleableNode in interface Styleable
        Returns:
        the Node that represents this Styleable object

      • toString

        public String toString​()
        Description copied from class: Object
        Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

        The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of: 

         getClass().getName() + '@' + Integer.toHexString(hashCode())
        Overrides:
        toString in class Object
        Returns:
        a string representation of the object.