Package org.gnome.gtk

Class ObjectExpression

java.lang.Object

org.javagi.base.ProxyInstance

org.gnome.gobject.TypeInstance

org.gnome.gtk.Expression

org.gnome.gtk.ObjectExpression

All Implemented Interfaces:

Proxy

@Generated("org.javagi.JavaGI")
public class ObjectExpression
extends Expression

A GObject value in a GtkExpression.

Nested Class Summary

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

Expression.Expression$Impl

Constructor Summary

Constructors

Constructor	Description
ObjectExpression(MemorySegment address)	Create a ObjectExpression proxy instance for the provided memory address.
ObjectExpression(GObject object)	Creates an expression evaluating to the given object with a weak reference.

Method Summary

Modifier and Type	Method	Description
protected ObjectExpression	asParent()	Returns this instance as if it were its parent type.
static MemoryLayout	getMemoryLayout()	The memory layout of the native struct.
@Nullable GObject	getObject()	Gets the object that the expression evaluates to.
static @Nullable Type	getType()	Get the GType of the ObjectExpression class

Methods inherited from class org.gnome.gtk.Expression

bind, evaluate, getValueType, isStatic, ref, unref, watch

Methods inherited from class org.gnome.gobject.TypeInstance

callParent, callParent, cast, getPrivate, readGClass, writeGClass

Methods inherited from class org.javagi.base.ProxyInstance

equals, handle, hashCode

Methods inherited from class java.lang.Object

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

Constructor Details

ObjectExpression

public ObjectExpression(MemorySegment address)

Create a ObjectExpression proxy instance for the provided memory address.

Parameters:

address - the memory address of the native object

ObjectExpression

public ObjectExpression(GObject object)

Creates an expression evaluating to the given object with a weak reference.

Once the object is disposed, it will fail to evaluate.

This expression is meant to break reference cycles.

If you want to keep a reference to object, use ConstantExpression(org.gnome.glib.Type, java.lang.Object...).

Parameters:

object - object to watch

Method Details

getType

public static @Nullable Type getType()

Get the GType of the ObjectExpression class

Returns:

the GType

getMemoryLayout

public static MemoryLayout getMemoryLayout()

The memory layout of the native struct.

Returns:

the memory layout

asParent

protected ObjectExpression 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 Expression

getObject

public @Nullable GObject getObject()

Gets the object that the expression evaluates to.

Returns:

the object, or NULL