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/*
* Copyright (c) 2002-2013 JGoodies Software GmbH. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* o Neither the name of JGoodies Software GmbH nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jgoodies.binding.value;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import com.jgoodies.binding.PresentationModel;
import com.jgoodies.binding.adapter.BasicComponentFactory;
import com.jgoodies.binding.adapter.Bindings;
/**
* 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 {@code #getComponentModel(String)} and
* {@code #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.
*
* @author Karsten Lentzsch
* @version $Revision: 1.15 $
*
* @see PresentationModel#getComponentModel(String)
* @see PresentationModel#getBufferedComponentModel(String)
* @see BasicComponentFactory
* @see Bindings
*
* @since 2.4
*/
public final class DefaultComponentValueModel extends AbstractWrappedValueModel {
// Instance Creation ******************************************************
/**
* Constructs a DefaultComponentValueModel that wraps the given ValueModel
* and adds {@link ComponentModel} Properties.
*
* @param wrappee the underlying or wrapped ValueModel
*/
public DefaultComponentValueModel(ValueModel wrappee) {
super(wrappee);
}
// ValueModel Implementation **********************************************
/**
* Returns this model's current subject value.
*
* @return this model's current subject value.
*/
@Override
public Object getValue() {
return getWrappee().getValue();
}
/**
* Sets the given value as new subject value.
*
* @param newValue the value to set
*/
@Override
public void setValue(Object newValue) {
getWrappee().setValue(newValue);
}
// AbstractWrappedValueModel Behavior *************************************
@Override
protected PropertyChangeListener createValueChangeHandler() {
return new ValueChangeHandler();
}
// Event Handling *********************************************************
/**
* Forwards value changes in the wrappee to listeners of this wrapper.
*/
private final class ValueChangeHandler implements PropertyChangeListener {
@Override
public void propertyChange(PropertyChangeEvent evt) {
fireValueChange(evt.getOldValue(), evt.getNewValue(), true);
}
}
}