ValueAccessor.java

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * 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 com.intellij.openapi.options.binding;

import com.intellij.ui.DocumentAdapter;

import javax.swing.*;
import javax.swing.event.DocumentEvent;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

/**
 * @author Dmitry Avdeev
 */
public abstract class ValueAccessor<V> {

  public abstract V getValue();
  public abstract void setValue(V value);
  public abstract Class<V> getType();

  public static ControlValueAccessor textFieldAccessor(final JTextField from) {
    return new ControlValueAccessor<String>() {
      public String getValue() {
        return from.getText();
      }

      public void setValue(String value) {
        from.setText(value);
      }

      public Class<String> getType() {
        return String.class;
      }

      public boolean isEnabled() {
        return from.isEnabled();
      }

      public void addChangeListener(final Runnable listener) {
        from.getDocument().addDocumentListener(new DocumentAdapter() {
          @Override
          protected void textChanged(DocumentEvent e) {
            listener.run();
          }
        });
      }
    };
  }

  public static ControlValueAccessor checkBoxAccessor(final JCheckBox from) {
    return new ControlValueAccessor<Boolean>() {

      public Boolean getValue() {
        return from.isSelected();
      }

      public void setValue(Boolean value) {
        from.setSelected(value.booleanValue());
      }

      public Class<Boolean> getType() {
        return Boolean.class;
      }

      public boolean isEnabled() {
        return from.isEnabled();
      }

      @Override
      public void addChangeListener(final Runnable listener) {
        from.addActionListener(new ActionListener() {
          public void actionPerformed(ActionEvent e) {
            listener.run();
          }
        });
      }
    };
  }

}