Package groovy.swing.model

Class ClosureModel

java.lang.Object

groovy.swing.model.ClosureModel

All Implemented Interfaces:

NestedValueModel, ValueModel

public class ClosureModel
extends Object
implements ValueModel, NestedValueModel

Represents a value model using a closure to extract the value from some source model and an optional write closure for updating the value.

Constructor Summary

Constructors

Constructor	Description
ClosureModel(ValueModel sourceModel, Closure readClosure)	Creates a read-only closure-backed model.
ClosureModel(ValueModel sourceModel, Closure readClosure, Closure writeClosure)	Creates a closure-backed model with explicit read and write closures.
ClosureModel(ValueModel sourceModel, Closure readClosure, Closure writeClosure, Class type)	Creates a closure-backed model with an explicit declared type.

Method Summary

Modifier and Type	Method	Description
ValueModel	getSourceModel()	Returns the model that supplies the source object consumed by the closures.
Class	getType()	Returns the declared value type for this derived model.
Object	getValue()	Evaluates the current source object through the read closure.
boolean	isEditable()	Indicates whether this model has a write closure.
void	setValue(Object value)	Applies the write closure to the current source object when the model is editable.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ClosureModel

public ClosureModel(ValueModel sourceModel,
 Closure readClosure)

Creates a read-only closure-backed model.

Parameters:

sourceModel - the model that supplies the source object

readClosure - the closure used to read the derived value

ClosureModel

public ClosureModel(ValueModel sourceModel,
 Closure readClosure,
 Closure writeClosure)

Creates a closure-backed model with explicit read and write closures.

Parameters:

sourceModel - the model that supplies the source object

readClosure - the closure used to read the derived value

writeClosure - the closure used to write back a new value, or null for read-only access

ClosureModel

public ClosureModel(ValueModel sourceModel,
 Closure readClosure,
 Closure writeClosure,
 Class type)

Creates a closure-backed model with an explicit declared type.

Parameters:

sourceModel - the model that supplies the source object

readClosure - the closure used to read the derived value

writeClosure - the closure used to write back a new value, or null for read-only access

type - the declared type of the derived value

Method Details

getSourceModel

public ValueModel getSourceModel()

Returns the model that supplies the source object consumed by the closures.

Specified by:

getSourceModel in interface NestedValueModel

Returns:

the nested source model

getValue

public Object getValue()

Evaluates the current source object through the read closure.

Specified by:

getValue in interface ValueModel

Returns:

the derived value, or null if the source model currently holds null

setValue

public void setValue(Object value)

Applies the write closure to the current source object when the model is editable.

Specified by:

setValue in interface ValueModel

Parameters:

value - the value to write

getType

public Class getType()

Returns the declared value type for this derived model.

Specified by:

getType in interface ValueModel

Returns:

the model type

isEditable

public boolean isEditable()

Indicates whether this model has a write closure.

Specified by:

isEditable in interface ValueModel

Returns:

true when a write closure is available