THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Provide serializable versions of java.util.function.(Supplier|Consumer|Function)
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java.util.function.Consumer and other classes are not serializable and this makes them unusable in stateful Wicket pages. For this reason Wicket provides org.apache.wicket.model.lambda.WicketSupplier, org.apache.wicket.model.lambda.WicketConsumer and org.apache.wicket.model.lambda.WicketFunction. Those interfaces should be used in method signatures where Java 8 lambdas or method references could be used. At the call site there is nothing specific to be done, i.e. just use lambdas and method references without any casting.
Provide IModel implementations which make use of Java 8 lambdas and method references
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Wicket provides three new implementations of IModel which use Java 8 consumers and suppliers, i.e. may be used with lambda or method references.
org.apache.wicket.model.lambda.LambdaModel.
Code Block language java title LambdaModel collapse true Person person = ...; IModel<String> personNameModel = new LambdaModel<>( () -> person.getName(), (name) -> person.setName(name));org.apache.wicket.model.lambda.SupplierModel. It is similar to org.apache.wicket.model.AbstractReadOnlyModel.
Code Block language java title SupplierModel collapse true Person person = ...; IModel<String> personNameModel = new SupplierModel<>(person::getName);org.apache.wicket.model.lambda.SupplierCachingModel. It is similar to org.apache.wicket.model.LoadableDetachableModel
Code Block language java title SupplierCachingModel collapse true Person person = ...; IModel<String> personNameModel = new SupplierCachingModel<>(person::getName);
IGenericComponent is a mixin/trait interface
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IGenericComponent uses Java 8 default methods to implement #setModel(IModel<T>), #getModel(), #setModelObject(T) and #getModelObject() by delegating to the respective get/setDefaultModel[Object] methods.
This way it could be easily used by any Component by just implementing it.
IModel is a @FunctionalInterface now
IModel provides default implementations of #detach() (do nothing) and #setObject(T) (throws UnsupportedOperationException), so it is possible to use it as a functional interface.
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new Link<String>("", () -> "abc") {
@Override
public void onClick()
{
// ...
}
};
Label label = new Label("id", person::getName); // the method reference is actually IModel<String> |
Dependency updates
All libraries on which Wicket modules depend are updated to their latest stable versions.
The most notable ones are:
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