public interface ComponentValueModel extends ValueModel, ComponentModel
The ComponentValueModel is similar to the Swing Action class. If you disable an Action, all buttons and menu items bound to that Action will be disabled. If you disable a ComponentValueModel, all components bound to that ComponentValueModel will be disabled. If you set the ComponentValueModel to invisible, the component bound to it will become invisible. If you set a ComponentValueModel to non-editable, the JTextComponents bound to it will become non-editable.
Since version 1.1, PresentationModels can vend ComponentValueModels
using #getComponentModel(String)
and
#getBufferedComponentModel(String)
. Multiple calls
to these factory methods return the same ComponentValueModel.
The BasicComponentFactory and the Bindings class check if the ValueModel provided to create/bind a Swing component is a ComponentValueModel. If so, the ComponentValueModel properties will be synchronized with the associated Swing component properties.
It is recommended to use ComponentValueModels only for those models that are bound to view components that require GUI state changes.
Example Code:
final class AlbumView { ... private void initComponents() { // No state modifications required for the name field. nameField = BasicComponentFactory.createTextField( presentationModel.getModel(Album.PROPERTY_NAME)); ... // Enablement shall change for the composer field composerField = BasicComponentFactory.createTextField( presentationModel.getComponentModel(Album.PROPERTY_COMPOSER)); ... } ... } public final class AlbumPresentationModel extends PresentationModel { ... private void updateComposerEnablement(boolean enabled) { getComponentModel(Album.PROPERTY_COMPOSER).setEnabled(enabled); } ... }
As of the Binding version 2.0 the ComponentValueModel feature is implemented for text components, radio buttons, check boxes, combo boxes, and lists. JColorChoosers bound using the Bindings class will ignore ComponentValueModel state.
PresentationModel.getComponentModel(String)
,
PresentationModel.getBufferedComponentModel(String)
,
Bindings
PROPERTY_VALUE
PROPERTY_EDITABLE, PROPERTY_ENABLED, PROPERTY_VISIBLE
addValueChangeListener, getValue, removeValueChangeListener, setValue
isEditable, isEnabled, isVisible, setEditable, setEnabled, setVisible
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