MutualExclusionPolicyModelGroup (Guise Framework 0.4.0 API)

java.lang.Object
- io.guise.framework.model.AbstractModelGroup<ValueModel<V>>
- - io.guise.framework.model.ValuePolicyModelGroup<java.lang.Boolean>
  - - io.guise.framework.model.MutualExclusionPolicyModelGroup

All Implemented Interfaces:

com.globalmentor.beans.GenericPropertyChangeListener<java.lang.Boolean>, ModelGroup<ValueModel<java.lang.Boolean>>, java.beans.PropertyChangeListener, java.util.EventListener
```
public final class MutualExclusionPolicyModelGroup
extends ValuePolicyModelGroup<java.lang.Boolean>
```
A group that ensures that only one boolean model in the group is set to true at the same time.
This class is declared final because it represents a particular defined semantics, no more and no less. This allows controllers to make assumptions about models with only this listener, and offload mutual exclusion to client that have this capability built in.

The current implementation will only update the selected model for models that are already a part of the group.

Author:

Garret Wilson.

Constructor Summary

Constructors
Constructor	Description
`MutualExclusionPolicyModelGroup()`	Default constructor.
`MutualExclusionPolicyModelGroup(ValueModel<java.lang.Boolean>... models)`	Model constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ValueModel<java.lang.Boolean>`	`getSelectedModel()`
`void`	`propertyChange(com.globalmentor.beans.GenericPropertyChangeEvent<java.lang.Boolean> propertyChangeEvent)`

Methods inherited from class io.guise.framework.model.ValuePolicyModelGroup
addImpl, propertyChange, removeImpl

Methods inherited from class io.guise.framework.model.AbstractModelGroup
add, contains, getModelSet, remove

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - MutualExclusionPolicyModelGroup
```
public MutualExclusionPolicyModelGroup()
```
    Default constructor. Provided to prevent array of generic types warning.
  - MutualExclusionPolicyModelGroup
```
public MutualExclusionPolicyModelGroup(ValueModel<java.lang.Boolean>... models)
```
    Model constructor.
    
    Parameters:
    
    models - Zero or more models with which to initially place in the group.
    
    Throws:
    
    java.lang.NullPointerException - if one of the models is null.
- Method Detail
  - getSelectedModel
```
public ValueModel<java.lang.Boolean> getSelectedModel()
```
    Returns:
    
    The currently selected model.
  - propertyChange
```
public void propertyChange(com.globalmentor.beans.GenericPropertyChangeEvent<java.lang.Boolean> propertyChangeEvent)
```