Package org.gnome.gtk

Class MenuButton

java.lang.Object

io.github.jwharm.javagi.base.ProxyInstance

org.gnome.gobject.TypeInstance

org.gnome.gobject.GObject

org.gnome.gobject.InitiallyUnowned

org.gnome.gtk.Widget

org.gnome.gtk.MenuButton

All Implemented Interfaces:

Proxy, Accessible, Buildable, ConstraintTarget

@Generated("io.github.jwharm.JavaGI")
public class MenuButton
extends Widget
implements Accessible, Buildable, ConstraintTarget

The GtkMenuButton widget is used to display a popup when clicked.

This popup can be provided either as a GtkPopover or as an abstract GMenuModel.

The GtkMenuButton widget can show either an icon (set with the Gtk.MenuButton:icon-name property) or a label (set with the Gtk.MenuButton:label property). If neither is explicitly set, a Image is automatically created, using an arrow image oriented according to Gtk.MenuButton:direction or the generic “open-menu-symbolic” icon if the direction is not set.

The positioning of the popup is determined by the Gtk.MenuButton:direction property of the menu button.

For menus, the Gtk.Widget:halign and Gtk.Widget:valign properties of the menu are also taken into account. For example, when the direction is ArrowType.DOWN and the horizontal alignment is Align.START, the menu will be positioned below the button, with the starting edge (depending on the text direction) of the menu aligned with the starting edge of the button. If there is not enough space below the button, the menu is popped up above the button instead. If the alignment would move part of the menu offscreen, it is “pushed in”.

| | start | center | end | | - | --- | --- | --- | | down | | | | | up | | | | | left | | | | | right | | | |

CSS nodes

 menubutton
 ╰── button.toggle
     ╰── <content>
          ╰── [arrow]
 

GtkMenuButton has a single CSS node with name menubutton which contains a button node with a .toggle style class.

If the button contains an icon, it will have the .image-button style class, if it contains text, it will have .text-button style class. If an arrow is visible in addition to an icon, text or a custom child, it will also have .arrow-button style class.

Inside the toggle button content, there is an arrow node for the indicator, which will carry one of the .none, .up, .down, .left or .right style classes to indicate the direction that the menu will appear in. The CSS is expected to provide a suitable image for each of these cases using the -gtk-icon-source property.

Optionally, the menubutton node can carry the .circular style class to request a round appearance.

Accessibility
GtkMenuButton uses the AccessibleRole.BUTTON role.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	MenuButton.ActivateCallback	Functional interface declaration of the ActivateCallback callback.
static class	MenuButton.Builder<B extends MenuButton.Builder<B>>	Inner class implementing a builder pattern to construct a GObject with properties.

Nested classes/interfaces inherited from class org.gnome.gtk.Widget

Widget.DestroyCallback, Widget.DirectionChangedCallback, Widget.HideCallback, Widget.KeynavFailedCallback, Widget.MapCallback, Widget.MnemonicActivateCallback, Widget.MoveFocusCallback, Widget.QueryTooltipCallback, Widget.RealizeCallback, Widget.ShowCallback, Widget.StateFlagsChangedCallback, Widget.UnmapCallback, Widget.UnrealizeCallback, Widget.WidgetClass, Widget.WidgetImpl

Nested classes/interfaces inherited from class org.gnome.gobject.InitiallyUnowned

InitiallyUnowned.InitiallyUnownedClass

Nested classes/interfaces inherited from class org.gnome.gobject.GObject

GObject.NotifyCallback, GObject.ObjectClass

Nested classes/interfaces inherited from interface org.gnome.gtk.Accessible

Accessible.AccessibleImpl, Accessible.AccessibleInterface

Nested classes/interfaces inherited from interface org.gnome.gtk.Buildable

Buildable.BuildableIface, Buildable.BuildableImpl

Nested classes/interfaces inherited from interface org.gnome.gtk.ConstraintTarget

ConstraintTarget.ConstraintTargetImpl, ConstraintTarget.ConstraintTargetInterface

Constructor Summary

Constructors

Constructor	Description
MenuButton()	Creates a new GtkMenuButton widget with downwards-pointing arrow as the only child.
MenuButton(MemorySegment address)	Create a MenuButton proxy instance for the provided memory address.

Method Summary

Modifier and Type	Method	Description
protected MenuButton	asParent()	Returns this instance as if it were its parent type.
static MenuButton.Builder<? extends MenuButton.Builder>	builder()	A MenuButton.Builder object constructs a MenuButton with the specified properties.
void	emitActivate()	Emits the "activate" signal.
boolean	getActive()	Returns whether the menu button is active.
boolean	getAlwaysShowArrow()	Gets whether to show a dropdown arrow even when using an icon or a custom child.
ArrowType	getArrowDirection()	Returns the direction the popup will be pointing at when popped up.
boolean	getCanShrink()	Retrieves whether the button can be smaller than the natural size of its contents.
Widget	getChild()	Gets the child widget of this MenuButton.
boolean	getHasFrame()	Returns whether the button has a frame.
String	getIconName()	Gets the name of the icon shown in the button.
String	getLabel()	Gets the label shown in the button
MenuModel	getMenuModel()	Returns the GMenuModel used to generate the popup.
Popover	getPopover()	Returns the GtkPopover that pops out of the button.
boolean	getPrimary()	Returns whether the menu button acts as a primary menu.
static Type	getType()	Get the GType of the MenuButton class
boolean	getUseUnderline()	Returns whether an embedded underline in the text indicates a mnemonic.
SignalConnection<MenuButton.ActivateCallback>	onActivate(MenuButton.ActivateCallback handler)	Emitted to when the menu button is activated.
void	popdown()	Dismiss the menu.
void	popup()	Pop up the menu.
void	setActive(boolean active)	Sets whether the menu button is active.
void	setAlwaysShowArrow(boolean alwaysShowArrow)	Sets whether to show a dropdown arrow even when using an icon or a custom child.
void	setCanShrink(boolean canShrink)	Sets whether the button size can be smaller than the natural size of its contents.
void	setChild(@Nullable Widget child)	Sets the child widget of this MenuButton.
void	setCreatePopupFunc(@Nullable MenuButtonCreatePopupFunc func)	Sets func to be called when a popup is about to be shown.
void	setDirection(ArrowType direction)	Sets the direction in which the popup will be popped up.
void	setHasFrame(boolean hasFrame)	Sets the style of the button.
void	setIconName(String iconName)	Sets the name of an icon to show inside the menu button.
void	setLabel(String label)	Sets the label to show inside the menu button.
void	setMenuModel(@Nullable MenuModel menuModel)	Sets the GMenuModel from which the popup will be constructed.
void	setPopover(@Nullable Widget popover)	Sets the GtkPopover that will be popped up when the this MenuButton is clicked.
void	setPrimary(boolean primary)	Sets whether menu button acts as a primary menu.
void	setUseUnderline(boolean useUnderline)	If true, an underline in the text indicates a mnemonic.

Methods inherited from class org.gnome.gtk.Widget

actionSetEnabled, activateActionIfExists, activateDefault, activateWidget, addController, addCssClass, addMnemonicLabel, addTickCallback, allocate, childFocus, computeBounds, computeExpand, computeExpand, computePoint, computeTransform, contains, createPangoContext, createPangoLayout, cssChanged, directionChanged, disposeTemplate, dragCheckThreshold, emitDestroy, emitDirectionChanged, emitHide, emitKeynavFailed, emitMap, emitMnemonicActivate, emitMoveFocus, emitQueryTooltip, emitRealize, emitShow, emitStateFlagsChanged, emitUnmap, emitUnrealize, errorBell, focus, getAllocatedBaseline, getAllocatedHeight, getAllocatedWidth, getAllocation, getAncestor, getBaseline, getCanFocus, getCanTarget, getChildVisible, getClipboard, getColor, getCssClasses, getCssName, getCursor, getDefaultDirection, getDirection, getDisplay, getFirstChild, getFocusable, getFocusChild, getFocusOnClick, getFontMap, getFontOptions, getFrameClock, getHalign, getHasTooltip, getHeight, getHexpand, getHexpandSet, getLastChild, getLayoutManager, getMapped, getMarginBottom, getMarginEnd, getMarginStart, getMarginTop, getMemoryLayout, getName, getNative, getNextSibling, getOpacity, getOverflow, getPangoContext, getParent, getPreferredSize, getPrevSibling, getPrimaryClipboard, getRealized, getReceivesDefault, getRequestMode, getRoot, getScaleFactor, getSensitive, getSettings, getSize, getSizeRequest, getStateFlags, getStyleContext, getTemplateChild, getTooltipMarkup, getTooltipText, getValign, getVexpand, getVexpandSet, getVisible, getWidth, grabFocus, hasCssClass, hasDefault, hasFocus, hasVisibleFocus, hide, inDestruction, initTemplate, insertActionGroup, insertAfter, insertBefore, isAncestor, isDrawable, isFocus, isSensitive, isVisible, keynavFailed, listMnemonicLabels, map, measure, mnemonicActivate, moveFocus, observeChildren, observeControllers, onDestroy, onDirectionChanged, onHide, onKeynavFailed, onMap, onMnemonicActivate, onMoveFocus, onQueryTooltip, onRealize, onShow, onStateFlagsChanged, onUnmap, onUnrealize, pick, pick, queryTooltip, queueAllocate, queueDraw, queueResize, realize, removeController, removeCssClass, removeMnemonicLabel, removeTickCallback, root, setCanFocus, setCanTarget, setChildVisible, setCssClasses, setCursor, setCursorFromName, setDefaultDirection, setDirection, setFocusable, setFocusChild, setFocusOnClick, setFontMap, setFontOptions, setHalign, setHasTooltip, setHexpand, setHexpandSet, setLayoutManager, setMarginBottom, setMarginEnd, setMarginStart, setMarginTop, setName, setOpacity, setOverflow, setParent, setReceivesDefault, setSensitive, setSizeRequest, setStateFlags, setStateFlags, setTooltipMarkup, setTooltipText, setValign, setVexpand, setVexpandSet, setVisible, shouldLayout, show, sizeAllocate, sizeAllocate, snapshot, snapshotChild, stateFlagsChanged, systemSettingChanged, translateCoordinates, triggerTooltipQuery, unmap, unparent, unrealize, unroot, unsetStateFlags, unsetStateFlags

Methods inherited from class org.gnome.gobject.GObject

addToggleRef, addWeakPointer, bindProperty, bindProperty, bindProperty, bindPropertyFull, bindPropertyFull, bindPropertyWithClosures, bindPropertyWithClosures, compatControl, connect, connect, connect, constructed, disconnect, dispatchPropertiesChanged, dispose, dupData, dupQdata, emit, emitNotify, finalize_, forceFloating, freezeNotify, get, getData, getProperty, getProperty, getProperty, getQdata, getv, interfaceFindProperty, interfaceInstallProperty, interfaceListProperties, isFloating, newInstance, newInstance, newv, notify, notify, notifyByPspec, onNotify, ref, refSink, removeToggleRef, removeWeakPointer, replaceData, replaceQdata, runDispose, set, setData, setDataFull, setProperty, setProperty, setProperty, setQdata, setQdataFull, setv, stealData, stealQdata, takeRef, thawNotify, unref, watchClosure, weakRef, weakUnref, withProperties

Methods inherited from class org.gnome.gobject.TypeInstance

callParent, callParent, getPrivate, readGClass, writeGClass

Methods inherited from class io.github.jwharm.javagi.base.ProxyInstance

equals, handle, hashCode

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.gnome.gtk.Accessible

announce, getAccessibleParent, getAccessibleRole, getAtContext, getBounds, getFirstAccessibleChild, getNextAccessibleSibling, getPlatformState, resetProperty, resetRelation, resetState, setAccessibleParent, updateNextAccessibleSibling, updateProperty, updateRelation, updateState

Methods inherited from interface org.gnome.gtk.Buildable

getBuildableId

Methods inherited from interface io.github.jwharm.javagi.base.Proxy

handle

Constructor Details

MenuButton

public MenuButton(MemorySegment address)

Create a MenuButton proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

MenuButton

public MenuButton()

Creates a new GtkMenuButton widget with downwards-pointing arrow as the only child.

You can replace the child widget with another GtkWidget should you wish to.

Method Details

getType

public static Type getType()

Get the GType of the MenuButton class

Returns:

the GType

asParent

protected MenuButton asParent()

Returns this instance as if it were its parent type. This is mostly synonymous to the Java super keyword, but will set the native typeclass function pointers to the parent type. When overriding a native virtual method in Java, "chaining up" with super.methodName() doesn't work, because it invokes the overridden function pointer again. To chain up, call asParent().methodName(). This will call the native function pointer of this virtual method in the typeclass of the parent type.

Overrides:

asParent in class Widget

getActive

public boolean getActive()

Returns whether the menu button is active.

Returns:

TRUE if the button is active

getAlwaysShowArrow

public boolean getAlwaysShowArrow()

Gets whether to show a dropdown arrow even when using an icon or a custom child.

Returns:

whether to show a dropdown arrow even when using an icon or a custom child.

getCanShrink

public boolean getCanShrink()

Retrieves whether the button can be smaller than the natural size of its contents.

Returns:

true if the button can shrink, and false otherwise

getChild

public Widget getChild()

Gets the child widget of this MenuButton.

Returns:

the child widget of this MenuButton

getArrowDirection

public ArrowType getArrowDirection()

Returns the direction the popup will be pointing at when popped up.

Returns:

a GtkArrowType value

getHasFrame

public boolean getHasFrame()

Returns whether the button has a frame.

Returns:

true if the button has a frame

getIconName

public String getIconName()

Gets the name of the icon shown in the button.

Returns:

the name of the icon shown in the button

getLabel

public String getLabel()

Gets the label shown in the button

Returns:

the label shown in the button

getMenuModel

public MenuModel getMenuModel()

Returns the GMenuModel used to generate the popup.

Returns:

a GMenuModel

getPopover

public Popover getPopover()

Returns the GtkPopover that pops out of the button.

If the button is not using a GtkPopover, this function returns null.

Returns:

a GtkPopover or null

getPrimary

public boolean getPrimary()

Returns whether the menu button acts as a primary menu.

Returns:

true if the button is a primary menu

getUseUnderline

public boolean getUseUnderline()

Returns whether an embedded underline in the text indicates a mnemonic.

Returns:

true whether an embedded underline in the text indicates the mnemonic accelerator keys.

popdown

public void popdown()

Dismiss the menu.

popup

public void popup()

Pop up the menu.

setActive

public void setActive(boolean active)

Sets whether the menu button is active.

Parameters:

active - whether the menu button is active

setAlwaysShowArrow

public void setAlwaysShowArrow(boolean alwaysShowArrow)

Sets whether to show a dropdown arrow even when using an icon or a custom child.

Parameters:

alwaysShowArrow - whether to show a dropdown arrow even when using an icon or a custom child

setCanShrink

public void setCanShrink(boolean canShrink)

Sets whether the button size can be smaller than the natural size of its contents.

For text buttons, setting canShrink to true will ellipsize the label.

For icon buttons, this function has no effect.

Parameters:

canShrink - whether the button can shrink

setChild

public void setChild(@Nullable
 @Nullable Widget child)

Sets the child widget of this MenuButton.

Setting a child resets Gtk.MenuButton:label and Gtk.MenuButton:icon-name.

If Gtk.MenuButton:always-show-arrow is set to TRUE and Gtk.MenuButton:direction is not GTK_ARROW_NONE, a dropdown arrow will be shown next to the child.

Parameters:

child - the child widget

setCreatePopupFunc

public void setCreatePopupFunc(@Nullable
 @Nullable MenuButtonCreatePopupFunc func)

Sets func to be called when a popup is about to be shown.

func should use one of

• setPopover(org.gnome.gtk.Widget)
• setMenuModel(org.gnome.gio.MenuModel)

to set a popup for this MenuButton. If func is non-null, this MenuButton will always be sensitive.

Using this function will not reset the menu widget attached to this MenuButton. Instead, this can be done manually in func.

Parameters:

func - function to call when a popup is about to be shown, but none has been provided via other means, or null to reset to default behavior

setDirection

public void setDirection(ArrowType direction)

Sets the direction in which the popup will be popped up.

If the button is automatically populated with an arrow icon, its direction will be changed to match.

If the does not fit in the available space in the given direction, GTK will its best to keep it inside the screen and fully visible.

If you pass ArrowType.NONE for a direction, the popup will behave as if you passed ArrowType.DOWN (although you won’t see any arrows).

Parameters:

direction - a GtkArrowType

setHasFrame

public void setHasFrame(boolean hasFrame)

Sets the style of the button.

Parameters:

hasFrame - whether the button should have a visible frame

setIconName

public void setIconName(String iconName)

Sets the name of an icon to show inside the menu button.

Setting icon name resets Gtk.MenuButton:label and Gtk.MenuButton:child.

If Gtk.MenuButton:always-show-arrow is set to TRUE and Gtk.MenuButton:direction is not GTK_ARROW_NONE, a dropdown arrow will be shown next to the icon.

Parameters:

iconName - the icon name

setLabel

public void setLabel(String label)

Sets the label to show inside the menu button.

Setting a label resets Gtk.MenuButton:icon-name and Gtk.MenuButton:child.

If Gtk.MenuButton:direction is not GTK_ARROW_NONE, a dropdown arrow will be shown next to the label.

Parameters:

label - the label

setMenuModel

public void setMenuModel(@Nullable
 @Nullable MenuModel menuModel)

Sets the GMenuModel from which the popup will be constructed.

If menuModel is null, the button is disabled.

A Popover will be created from the menu model with PopoverMenu.fromModel(org.gnome.gio.MenuModel). Actions will be connected as documented for this function.

If Gtk.MenuButton:popover is already set, it will be dissociated from the this MenuButton, and the property is set to null.

Parameters:

menuModel - a GMenuModel, or null to unset and disable the button

setPopover

public void setPopover(@Nullable
 @Nullable Widget popover)

Sets the GtkPopover that will be popped up when the this MenuButton is clicked.

If popover is null, the button is disabled.

If Gtk.MenuButton:menu-model is set, the menu model is dissociated from the this MenuButton, and the property is set to null.

Parameters:

popover - a GtkPopover, or null to unset and disable the button

setPrimary

public void setPrimary(boolean primary)

Sets whether menu button acts as a primary menu.

Primary menus can be opened with the F10 key.

Parameters:

primary - whether the menubutton should act as a primary menu

setUseUnderline

public void setUseUnderline(boolean useUnderline)

If true, an underline in the text indicates a mnemonic.

Parameters:

useUnderline - true if underlines in the text indicate mnemonics

onActivate

public SignalConnection<MenuButton.ActivateCallback> onActivate(MenuButton.ActivateCallback handler)

Emitted to when the menu button is activated.

The ::activate signal on GtkMenuButton is an action signal and emitting it causes the button to pop up its menu.

Parameters:

handler - the signal handler

Returns:

a signal handler ID to keep track of the signal connection

See Also:

• MenuButton.ActivateCallback.run()

emitActivate

public void emitActivate()

Emits the "activate" signal. See onActivate(org.gnome.gtk.MenuButton.ActivateCallback).

builder

public static MenuButton.Builder<? extends MenuButton.Builder> builder()

A MenuButton.Builder object constructs a MenuButton with the specified properties. Use the various set...() methods to set properties, and finish construction with MenuButton.Builder.build().