Package org.gnome.webkit

Interface WebView.ScriptDialogCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

WebView

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 WebView.ScriptDialogCallback
extends FunctionPointer

Functional interface declaration of the ScriptDialogCallback callback.

See Also:

• run(org.gnome.webkit.ScriptDialog)

Method Summary

Modifier and Type	Method	Description
boolean	run(ScriptDialog dialog)	Emitted when JavaScript code calls <function>window.alert</function>, <function>window.confirm</function> or <function>window.prompt</function>, or when <function>onbeforeunload</function> event is fired.
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 sourceWebView, MemorySegment dialog)	The upcall method is called from native code.

Method Details

run

boolean run(ScriptDialog dialog)

Emitted when JavaScript code calls <function>window.alert</function>, <function>window.confirm</function> or <function>window.prompt</function>, or when <function>onbeforeunload</function> event is fired. The dialog parameter should be used to build the dialog. If the signal is not handled a different dialog will be built and shown depending on the dialog type: <itemizedlist> <listitem><para> ScriptDialogType.ALERT: message dialog with a single Close button. </para></listitem> <listitem><para> ScriptDialogType.CONFIRM: message dialog with OK and Cancel buttons. </para></listitem> <listitem><para> ScriptDialogType.PROMPT: message dialog with OK and Cancel buttons and a text entry with the default text. </para></listitem> <listitem><para> ScriptDialogType.BEFORE_UNLOAD_CONFIRM: message dialog with Stay and Leave buttons. </para></listitem> </itemizedlist>

It is possible to handle the script dialog request asynchronously, by simply caling webkit_script_dialog_ref() on the dialog argument and calling webkit_script_dialog_close() when done. If the last reference is removed on a WebKitScriptDialog and the dialog has not been closed, webkit_script_dialog_close() will be called.

upcall

default int upcall(MemorySegment sourceWebView,
 MemorySegment dialog)

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