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Groovy example source code file (JListProperties.groovy)

This example Groovy source code file (JListProperties.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

abstractsyntheticbinding, bean, event, fullbinding, fullbinding, gui, javabean, jlist, jlistelementsbinding, jlistselectedelementbinding, jlistselectedelementbinding, listmodel, map, propertychangelistener, swing, targetbinding, targetbinding, triggerbinding, triggerbinding, util

The Groovy JListProperties.groovy source code

/*
 * Copyright 2007-2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package groovy.swing.binding;

import org.codehaus.groovy.binding.*;

import javax.swing.*;
import javax.swing.event.*;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.HashMap;
import java.util.Map;

/**
 * @author Andres Almiray
 * @since Groovy 1.7.5
 */
public class JListProperties {
    public static Map<String, TriggerBinding> getSyntheticProperties() {
        Map<String, TriggerBinding> result = new HashMap();

        // to match property name
        result.put(JList.class.getName() + "#selectedValue", new TriggerBinding() {
            public FullBinding createBinding(SourceBinding source, TargetBinding target) {
                return new JListSelectedElementBinding((PropertyBinding) source, target, "selectedValue");
            }
        });

        // to match JSR-295
        result.put(JList.class.getName() + "#selectedElement", new TriggerBinding() {
            public FullBinding createBinding(SourceBinding source, TargetBinding target) {
                return new JListSelectedElementBinding((PropertyBinding) source, target, "selectedElement");
            }
        });

        // to match property name
        result.put(JList.class.getName() + "#selectedValues", new TriggerBinding() {
            public FullBinding createBinding(SourceBinding source, TargetBinding target) {
                return new JListSelectedElementBinding((PropertyBinding) source, target, "selectedValues");
            }
        });

        // to match JSR-295
        result.put(JList.class.getName() + "#selectedElements", new TriggerBinding() {
            public FullBinding createBinding(SourceBinding source, TargetBinding target) {
                return new JListSelectedElementBinding((PropertyBinding) source, target, "selectedElements");
            }
        });

        result.put(JList.class.getName() + "#selectedIndex", new TriggerBinding() {
            public FullBinding createBinding(SourceBinding source, TargetBinding target) {
                return new JListSelectedElementBinding((PropertyBinding) source, target, "selectedIndex");
            }
        });

        result.put(JList.class.getName() + "#selectedIndices", new TriggerBinding() {
            public FullBinding createBinding(SourceBinding source, TargetBinding target) {
                return new JListSelectedElementBinding((PropertyBinding) source, target, "selectedIndices");
            }
        });

        // to match JSR-295
        result.put(JList.class.getName() + "#elements", new TriggerBinding() {
            public FullBinding createBinding(SourceBinding source, TargetBinding target) {
                return new JListElementsBinding((PropertyBinding) source, target);
            }
        });

        return result;
    }
}

class JListElementsBinding extends AbstractSyntheticBinding implements ListDataListener, PropertyChangeListener {
    JList boundList;

    public JListElementsBinding(PropertyBinding propertyBinding, TargetBinding target) {
        super(propertyBinding, target, JList.class, "elements");
    }

    protected void syntheticBind() {
        boundList = (JList) ((PropertyBinding)sourceBinding).getBean();
        boundList.addPropertyChangeListener("model", this);
        boundList.getModel().addListDataListener(this);
    }

    protected void syntheticUnbind() {
        boundList.removePropertyChangeListener("model", this);
        boundList.getModel().removeListDataListener(this);
    }

    public void propertyChange(PropertyChangeEvent event) {
        update();
        ((ListModel) event.getOldValue()).removeListDataListener(this);
        ((ListModel) event.getNewValue()).addListDataListener(this);
    }

    public void intervalAdded(ListDataEvent e) {
        update();
    }

    public void intervalRemoved(ListDataEvent e) {
        update();
    }

    public void contentsChanged(ListDataEvent e) {
        update();
    }
}

class JListSelectedElementBinding extends AbstractSyntheticBinding implements PropertyChangeListener, ListSelectionListener {
    JList boundList;

    protected JListSelectedElementBinding(PropertyBinding source, TargetBinding target, String propertyName) {
        super(source, target, JList.class, propertyName);
    }

    public synchronized void syntheticBind() {
        boundList = (JList) ((PropertyBinding)sourceBinding).getBean();
        boundList.addPropertyChangeListener("selectionModel", this);
        boundList.addListSelectionListener(this);
    }

    public synchronized void syntheticUnbind() {
        boundList.removePropertyChangeListener("selectionModel", this);
        boundList.removeListSelectionListener(this);
        boundList = null;
    }

    public void setTargetBinding(TargetBinding target) {
        super.setTargetBinding(target);
    }

    public void propertyChange(PropertyChangeEvent event) {
        update();
    }

    public void valueChanged(ListSelectionEvent e) {
        update();
    }
}

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