Vala.Signal – vala – Vala Binding Reference

Description:

public class Signal : Symbol, Callable

Represents an object signal. Signals enable objects to provide notifications.

All known sub-classes:

Namespace: Vala

Package: vala

Content:

Properties:

public Block body { get; set; }

public Method default_handler { get; private set; }

Refers to the default signal handler, which is an anonymous function in the scope.

public Method emitter { get; private set; }

Refers to the public signal emitter method, which is an anonymous function in the scope.

public bool is_virtual { get; set; }

Specifies whether this signal has virtual method handler.

public DataType return_type { get; set; }

The return type of handlers of this signal.

Creation methods:

public Signal (string name, DataType return_type, SourceReference? source_reference = null, Comment? comment = null)

Creates a new signal.

Methods:

public override void accept (CodeVisitor visitor)

public override void accept_children (CodeVisitor visitor)

public void add_parameter (Parameter param)

Appends parameter to signal handler.

public override bool check (CodeContext context)

public Delegate get_delegate (DataType sender_type, CodeNode node_reference)

Returns generated delegate to be used for signal handlers.

public unowned List<Parameter> get_parameters ()

public override void replace_type (DataType old_type, DataType new_type)

Fields:

Inherited Members:

All known members inherited from interface Vala.Callable

Signal