Package at.bestsolution.efxclipse.runtime.databinding.internal

Source Code of at.bestsolution.efxclipse.runtime.databinding.internal.AnonymousFXBeanValueProperty

/*******************************************************************************
* Copyright (c) 2008, 2009 Matthew Hall and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
*     Matthew Hall - initial API and implementation (bug 247997)
*     Matthew Hall - bugs 264307, 264619
******************************************************************************/

package at.bestsolution.efxclipse.runtime.databinding.internal;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.core.databinding.observable.masterdetail.MasterDetailObservables;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.property.value.DelegatingValueProperty;
import org.eclipse.core.databinding.property.value.IValueProperty;

import at.bestsolution.efxclipse.runtime.databinding.JFXBeanProperties;

/**
* @since 3.3
*
*/
public class AnonymousFXBeanValueProperty extends DelegatingValueProperty {
  private final String propertyName;

  private Map<Class<?>,IValueProperty> delegates;

  /**
   * @param propertyName
   * @param valueType
   */
  public AnonymousFXBeanValueProperty(String propertyName, Class<?> valueType) {
    super(valueType);
    this.propertyName = propertyName;
    this.delegates = new HashMap<Class<?>,IValueProperty>();
  }

  protected IValueProperty doGetDelegate(Object source) {
    return getClassDelegate(source.getClass());
  }

  private IValueProperty getClassDelegate(Class<?> beanClass) {
    if (delegates.containsKey(beanClass))
      return delegates.get(beanClass);

    IValueProperty delegate;
    try {
      delegate = JFXBeanProperties.value(beanClass, propertyName,
          (Class<?>) getValueType());
    } catch (IllegalArgumentException noSuchProperty) {
      delegate = null;
    }
    delegates.put(beanClass, delegate);
    return delegate;
  }

  public IObservableValue observeDetail(IObservableValue master) {
    Object valueType = getValueType();
    if (valueType == null)
      valueType = inferValueType(master.getValueType());
    return MasterDetailObservables.detailValue(master, valueFactory(master
        .getRealm()), valueType);
  }

  private Object inferValueType(Object masterObservableValueType) {
    if (masterObservableValueType instanceof Class) {
      return getClassDelegate((Class<?>) masterObservableValueType)
          .getValueType();
    }
    return null;
  }

  public String toString() {
    String s = "?." + propertyName; //$NON-NLS-1$
    Class<?> valueType = (Class<?>) getValueType();
    if (valueType != null)
      s += "<" + FXBeanPropertyHelper.shortClassName(valueType) + ">"; //$NON-NLS-1$//$NON-NLS-2$
    return s;
  }
}
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