propertysheet/src/org/eclipse/wb/internal/core/model/property/editor/EnumerationValuesPropertyEditor.java

/*******************************************************************************
 * Copyright (c) 2011 Google, Inc.
 * 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:
 *    Google, Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.wb.internal.core.model.property.editor;

import com.google.common.base.Objects;

import org.eclipse.wb.core.controls.CCombo3;
import org.eclipse.wb.internal.core.model.property.Property;

import java.beans.PropertyDescriptor;

/**
 * {@link PropertyEditor} for "enumerationValues" attribute of {@link PropertyDescriptor}.
 * <p>
 * See http://javadude.com/articles/javabeanattributes.html for attributes.
 *
 * @author scheglov_ke
 * @coverage core.model.property.editor
 */
public class EnumerationValuesPropertyEditor extends AbstractComboPropertyEditor
    implements
      IValueSourcePropertyEditor {
  private final String[] m_names;
  private final Object[] m_values;
  private final String[] m_sources;

  ////////////////////////////////////////////////////////////////////////////
  //
  // Constructor
  //
  ////////////////////////////////////////////////////////////////////////////
  public EnumerationValuesPropertyEditor(Object attributeValue) {
    Object[] enumElements = (Object[]) attributeValue;
    int items = enumElements.length / 3;
    m_names = new String[items];
    m_values = new Object[items];
    m_sources = new String[items];
    for (int i = 0; i < items; i++) {
      m_names[i] = (String) enumElements[3 * i + 0];
      m_values[i] = enumElements[3 * i + 1];
      m_sources[i] = (String) enumElements[3 * i + 2];
    }
  }

  ////////////////////////////////////////////////////////////////////////////
  //
  // TextDisplayPropertyEditor
  //
  ////////////////////////////////////////////////////////////////////////////
  @Override
  public String getText(Property property) throws Exception {
    Object value = property.getValue();
    // return name for value
    if (value != Property.UNKNOWN_VALUE) {
      for (int i = 0; i < m_values.length; i++) {
        if (Objects.equal(m_values[i], value)) {
          return m_names[i];
        }
      }
    }
    // unknown value
    return null;
  }

  ////////////////////////////////////////////////////////////////////////////
  //
  // IValueSourcePropertyEditor
  //
  ////////////////////////////////////////////////////////////////////////////
  @Override
public String getValueSource(Object value) throws Exception {
    if (value != Property.UNKNOWN_VALUE) {
      for (int i = 0; i < m_values.length; i++) {
        if (Objects.equal(m_values[i], value)) {
          return m_sources[i];
        }
      }
    }
    // unknown value
    return null;
  }

  ////////////////////////////////////////////////////////////////////////////
  //
  // IClipboardSourceProvider
  //
  ////////////////////////////////////////////////////////////////////////////
//  public String getClipboardSource(GenericProperty property) throws Exception {
//    Object value = property.getValue();
//    return getValueSource(value);
//  }

  ////////////////////////////////////////////////////////////////////////////
  //
  // Combo
  //
  ////////////////////////////////////////////////////////////////////////////
  @Override
  protected void addItems(Property property, CCombo3 combo) throws Exception {
    for (String title : m_names) {
      combo.add(title);
    }
  }

  @Override
  protected void selectItem(Property property, CCombo3 combo) throws Exception {
    combo.setText(getText(property));
  }

  @Override
  protected void toPropertyEx(Property property, CCombo3 combo, int index) throws Exception {
    Object value = m_values[index];
//    if (property instanceof GenericProperty) {
//      GenericProperty genericProperty = (GenericProperty) property;
//      String source = getValueSource(value);
//      genericProperty.setExpression(source, value);
//    } else {
      property.setValue(value);
//    }
  }
}