In the previous discusion
(http://mail.gnome.org/archives/vala-list/2009-May/msg00069.html)
Yu Feng notice me to test old signal syntax (+=) with inheritted signal.
I wrote small testcase to reproduce this feature (vala 0.7.2).
Is this bug?
--
Харин Роман <[email protected]>
jabber://[email protected]
// valac testcase.vala
class BaseClassWithSignal : Object {
// test sygnal
public signal void stiven();
}
class InheritedClass : BaseClassWithSignal {
public void some_very_usefull_method() {
stdout.printf("** Usefull method\n");
}
}
class TestClass : Object {
private BaseClassWithSignal bc_obj;
private InheritedClass in_obj;
public TestClass() {
// instance of base class
bc_obj = new BaseClassWithSignal();
bc_obj.stiven.connect(on_base_sygnal);
// instance of inheritted class
in_obj = new InheritedClass();
// new sygnal syntax
// error: Argument 1: Cannot convert from `TestClass.on_inh_sygnal'
// to `BaseClassWithSignal.stiven'
in_obj.stiven.connect(on_inh_sygnal);
// old sygnal syntax, this compilable
//in_obj.stiven += on_inh_sygnal;
}
public void do_test() {
// test base class
stdout.printf("Emit sygnal BaseClassWithSignal\n");
bc_obj.stiven();
stdout.printf("Emit sygnal InheritedClass\n");
in_obj.stiven();
}
void on_base_sygnal(BaseClassWithSignal obj) {
stdout.printf(" >> handler BaseClassWithSignal\n");
}
void on_inh_sygnal(InheritedClass obj) {
stdout.printf(" >> handler InheritedClass\n");
obj.some_very_usefull_method();
}
}
static int main (string[] args) {
// base class
var testclass = new TestClass();
testclass.do_test();
return 0;
}
_______________________________________________
Vala-list mailing list
[email protected]
http://mail.gnome.org/mailman/listinfo/vala-list
