IComponentAssignedModel (Wicket Core 9.7.0 API)

Type Parameters:

T - The model data type

All Superinterfaces:

org.apache.wicket.util.io.IClusterable, IDetachable, IModel<T>, Serializable

All Known Implementing Classes:

ComponentDetachableModel, ComponentModel, ComponentPropertyModel, ResourceModel, StringResourceModel
```
public interface IComponentAssignedModel<T>
extends IModel<T>
```
Models that wish to substitute themselves with a wrapper when they are bound to a component (either through IModel parameter in a constructor or via a call to Component.setDefaultModel(IModel)) should implement this interface. One reason for a model to want to do this is if it needs to be aware of the component it is bound to. The algorithm wicket employs is similar to this:
```
 void Component.setModel(IModel model) 
 {
     if (model instanceof IComponentAssignedModel) 
     {
        this.model = ((IComponentAssignedModel)model).wrapOnAssignment(this);
     } 
     else 
     {
        this.model = model;
     }
 }
 
```
For an example see ResourceModel
Author:

jcompagner, Igor Vaynberg (ivaynberg)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`IWrapModel<T>`	`wrapOnAssignment(Component component)`	This method is called when the component gets its model assigned.

Methods inherited from interface org.apache.wicket.model.IModel
combineWith, detach, filter, flatMap, getObject, isPresent, map, orElse, orElseGet, setObject

- Method Detail
  - wrapOnAssignment
```
IWrapModel<T> wrapOnAssignment(Component component)
```
    This method is called when the component gets its model assigned. WARNING: Because the model can be assigned in the constructor of component this method can also be called with a 'this' of a component that is not fully constructed yet.
    
    Parameters:
    
    component -
    
    Returns:
    
    The WrapModel that wraps this model