A sintetic protected method could be created to invoke the
GWT.create(this.getClass()):
public class A{
// created by the compiler
protected void sintetic$create(){
GWT.create(A.class);
};
public void foo(){
// replaced by the compiler
sintetic$create();
}
}
public class B extends A{
// created by the compiler
protected void sintetic$create(){
GWT.create(B.class);
}
}
On Feb 16, 10:12 pm, Ray Cromwell <cromwell...@gmail.com> wrote:
> But this.getClass() can be a polymorphic call not know until runtime.
>
> public class A {
> public void foo() {
> GWT.create(this.getClass());
> }
>
> }
>
> public class B extends A{}
> public class C extends A{}
>
> A a0 = new A();
> A a1 = new B();
> A a2 = new C();
>
> a0.foo(); // create(A.class)
> a1.foo(); // create(B.class)
> a2.foo(); // create(C.class)
>
> You can easily arrange it such that there's no way to statically
> determine the type of 'this'
>
> -Ray
>
> On Tue, Feb 16, 2010 at 5:01 PM, Andrés Testi <andres.a.te...@gmail.com>
> wrote:
> > Done that this.getClass() is well known at compile time, could be a
> > great improvement to adding support for GWT.create(this.getClass()).
> > For example, Guice/GIN TypeLiteral<T> is not fully emulated in web
> > mode because it's impossible to determine WTH is the type parameter T
> > (not support for equals(), hashCode(), toString(), etc.) . With
> > GWT.create(this.getClass()), TypeLiteral emulation could be defined
> > as:
>
> > class TypeLiteral<T>{
>
> > private final TypeInfo<T> typeInfo = GWT.create(this.getClass());
>
> > protected TypeLiteral<T>(){}
>
> > public String toString(){
> > return typeInfo.toString();
> > }
> > ....
> > }
>
> > With such feature, the UiBinder boilerplate could be fixed:
>
> > class EasyUiBinder<U, O> implements UiBinder<U,O>{
> > private final UiBinder<U, O> impl = GWT.create(this.getClass());
>
> > protected EasyUiBinder(){}
>
> > public U createAndBindUi(O owner) {
> > return impl.createAndBindUi(owner);
> > }
> > }
>
> > UiBinder<Widget, EasyDemo> uiBinder = new EasyUiBinder<Widget,
> > EasyDemo>(){};
>
> > Are there technical limitations for support something like this?
>
> > - Andrés
>
> > --
> >http://groups.google.com/group/Google-Web-Toolkit-Contributors
- Andrés
--
http://groups.google.com/group/Google-Web-Toolkit-Contributors
