Package org.gnome.adw

Interface TabView.ClosePageCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

TabView

Functional Interface:

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

@FunctionalInterface
public static interface TabView.ClosePageCallback
extends FunctionPointer

Functional interface declaration of the ClosePageCallback callback.

See Also:

• run(org.gnome.adw.TabPage)

Method Summary

Modifier and Type	Method	Description
boolean	run(TabPage page)	Emitted after TabView.closePage(org.gnome.adw.TabPage) has been called for page.
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 sourceTabView, MemorySegment page)	The upcall method is called from native code.

Method Details

run

boolean run(TabPage page)

Emitted after TabView.closePage(org.gnome.adw.TabPage) has been called for page.

The handler is expected to call TabView.closePageFinish(org.gnome.adw.TabPage, boolean) to confirm or reject the closing.

The default handler will immediately confirm closing for non-pinned pages, or reject it for pinned pages, equivalent to the following example:

static gboolean
 close_page_cb (AdwTabView *view,
                AdwTabPage *page,
                gpointer    user_data)
 {
   adw_tab_view_close_page_finish (view, page, !adw_tab_page_get_pinned (page));

   return GDK_EVENT_STOP;
 }
 

The TabView.closePageFinish(org.gnome.adw.TabPage, boolean) call doesn't have to happen inside the handler, so can be used to do asynchronous checks before confirming the closing.

A typical reason to connect to this signal is to show a confirmation dialog for closing a tab.

The signal handler should return GDK_EVENT_STOP to stop propagation or GDK_EVENT_CONTINUE to invoke the default handler.

upcall

default int upcall(MemorySegment sourceTabView,
 MemorySegment page)

The upcall method is called from native code. The parameters are marshaled and run(org.gnome.adw.TabPage) 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