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java.lang.Objectcom.jgoodies.binding.beans.Model
com.jgoodies.binding.value.AbstractValueModel
com.jgoodies.binding.value.ComponentValueModel
public final class ComponentValueModel
A ValueModel that provides relevant GUI state in presentation models. It provides bound properties for the frequently used JComponent state enabled,visible and JTextComponent state editable. ComponentValueModels can be used to set these properties at the presentation model layer; any ComponentValueModel property change will be reflected by components bound to that ComponentValueModel.
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.PROPERTYNAME_NAME)); ... // Enablement shall change for the composer field composerField = BasicComponentFactory.createTextField( presentationModel.getComponentModel(Album.PROPERTYNAME_COMPOSER)); ... } ... } public final class AlbumPresentationModel extends PresentationModel { ... private void updateComposerEnablement(boolean enabled) { getComponentModel(Album.PROPERTYNAME_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)
,
BasicComponentFactory
,
Bindings
,
Serialized FormField Summary | |
---|---|
static String |
PROPERTYNAME_EDITABLE
The name of the property used to synchronize this model with the editable property of JTextComponents. |
static String |
PROPERTYNAME_ENABLED
The name of the property used to synchronize this model with the enabled property of JComponents. |
static String |
PROPERTYNAME_VISIBLE
The name of the property used to synchronize this model with the visible property of JComponents. |
Fields inherited from class com.jgoodies.binding.value.AbstractValueModel |
---|
PROPERTYNAME_VALUE |
Constructor Summary | |
---|---|
ComponentValueModel(ValueModel subject)
Constructs a ComponentValueModel for the given ValueModel. |
Method Summary | |
---|---|
Object |
getValue()
Returns this model's current subject value. |
boolean |
isEditable()
Returns if this model represents the editable or non-editable text component state. |
boolean |
isEnabled()
Returns if this model represents an enabled or disabled component state. |
boolean |
isVisible()
Returns if this model represents the visible or invisible component state. |
void |
setEditable(boolean b)
Sets this model state to editable or non-editable, which in turn will make all text components bound to this model editable or non-editable. |
void |
setEnabled(boolean b)
Enables or disabled this model, which in turn will enable or disable all Swing components bound to this model. |
void |
setValue(Object newValue)
Sets the given value as new subject value. |
void |
setVisible(boolean b)
Sets this model state to visible or invisible, which in turn will make all Swing components bound to this model visible or invisible. |
Methods inherited from class com.jgoodies.binding.value.AbstractValueModel |
---|
addValueChangeListener, booleanValue, doubleValue, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, floatValue, getString, intValue, longValue, removeValueChangeListener, setValue, setValue, setValue, setValue, setValue, toString |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
---|
public static final String PROPERTYNAME_ENABLED
public static final String PROPERTYNAME_VISIBLE
public static final String PROPERTYNAME_EDITABLE
Constructor Detail |
---|
public ComponentValueModel(ValueModel subject)
subject
- the underlying (or wrapped) ValueModelMethod Detail |
---|
public Object getValue()
public void setValue(Object newValue)
newValue
- the value to setpublic boolean isEnabled()
public void setEnabled(boolean b)
b
- true to enable, false to disable.public boolean isVisible()
public void setVisible(boolean b)
b
- true for visible, false for invisiblepublic boolean isEditable()
public void setEditable(boolean b)
b
- true for editable, false for non-editable
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