ZK Developer's Reference/MVVM/Syntax/ViewModel/@AfterCompose

since 6.0.2

Syntax

@AfterCompose

@AfterCompose(superclass=true)

Description

Target: method, class

Purpose: Marker annotation to identify a life cycle method which will be invoked in doAfterCompose() of BindComposer.

At most one @AfterCompose-annotated method is allowed in a ViewModel class. If you set annotation element superclass to true, the ViewModel's parent class's @AfterCompose-annotated method will be invoked first then child's, and this logic repeats on super class. If a class has no method with @AfterCompose, no method will be called (including the super class's). .

For example, in a class hierarchy: A(has @AfterCompose) <- B(has @AfterCompose) <- C(no @AfterCompose) <- D (has @AfterCompose, superclass=true). D is the last child class.

• When BindComposer start to handle D while in doAfterCompose(), it will call D's @AfterCompose method.
• When BindComposer reaches C, no method will be called.
• When BindComposer reaches B , it will call As' then B's.
• When BindComposer reaches A, it will call A's.

We also can use parameter related annotation on AfterCompose method's parameters just as what we can do in @Init, please refer to subsections of ZK Developer's Reference/MVVM/Syntax/ViewModel/Parameters.

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Example

public class FooViewModel{
	@AfterCompose
	public void doFoo(){
		//do while AfterCompose
	}
}

public class BarViewModel extends FooViewModel{
	@AfterCompose(superclass=true)
	public void afterComposeBar(){
		//AfterCompose method of super class FooViewModel will be called first.
	}
}

@AfterCompose(superclass=true)
public class ChildViewModel extends BarViewModel{

}

Version History

Version	Date	Content
6.0.2	June 2012	The @AfterCompose was introduced.