CustomFilterFunc (java-gi API)

All Superinterfaces:: FunctionPointer

Functional Interface:: This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface @Generated("io.github.jwharm.JavaGI") public interface CustomFilterFunc extends FunctionPointer

Functional interface declaration of the CustomFilterFunc callback.

See Also:

Method Summary

Modifier and Type

Method

Description

boolean

run(GObject item)

User function that is called to determine if the item should be matched.

default MemorySegment

toCallback(Arena arena)

Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.

default int

upcall(MemorySegment item, MemorySegment userData)

The upcall method is called from native code.

Method Details
- run
  
  boolean run(GObject item)
  
  User function that is called to determine if the item should be matched.
  If the filter matches the item, this function must return true. If the item should be filtered out, false must be returned.
- upcall
  
  default int upcall(MemorySegment item, MemorySegment userData)
  
  The upcall method is called from native code. The parameters are marshaled and run(org.gnome.gobject.GObject) is executed.
- toCallback
  
  default MemorySegment toCallback(Arena arena)
  
  Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
  
  Specified by:
  
  toCallback in interface FunctionPointer
  
  Parameters:
  
  arena - the function pointer will be allocated in this arena
  
  Returns:
  
  the native function pointer