GroupPropertySource.java

/*****************************************************************************
 *  Limpet - the Lightweight InforMation ProcEssing Toolkit
 *  http://limpet.info
 *
 *  (C) 2015-2016, Deep Blue C Technologies Ltd
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the Eclipse Public License v1.0
 *  (http://www.eclipse.org/legal/epl-v10.html)
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *****************************************************************************/
package info.limpet.ui.data_provider.data;

import info.limpet.IStoreGroup;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.ui.views.properties.IPropertyDescriptor;
import org.eclipse.ui.views.properties.IPropertySource;
import org.eclipse.ui.views.properties.PropertyDescriptor;
import org.eclipse.ui.views.properties.TextPropertyDescriptor;

/**
 * This class provides property sheet properties for ButtonElement.
 */
public class GroupPropertySource implements IPropertySource
{

  private static final String GROUP_NAME = "limpet.group.name";

  private IPropertyDescriptor[] propertyDescriptors;
  private final GroupWrapper _group;

  /**
   * Creates a new ButtonElementPropertySource.
   * 
   * @param operationWrapper
   *          the element whose properties this instance represents
   */
  public GroupPropertySource(final GroupWrapper operationWrapper)
  {
    _group = operationWrapper;
  }

  @Override
  public Object getEditableValue()
  {
    return _group;
  }

  /**
   * @see org.eclipse.ui.views.properties.IPropertySource#getPropertyDescriptors()
   */
  @Override
  public IPropertyDescriptor[] getPropertyDescriptors()
  {
    if (propertyDescriptors == null)
    {
      List<IPropertyDescriptor> list = new ArrayList<IPropertyDescriptor>();

      // Create a descriptor and set a category
      final PropertyDescriptor textDescriptor =
          new TextPropertyDescriptor(GROUP_NAME, "Name");
      textDescriptor.setCategory("Label");
      list.add(textDescriptor);

      propertyDescriptors =
          (IPropertyDescriptor[]) list.toArray(new IPropertyDescriptor[]
          {});
    }
    return propertyDescriptors;
  }

  @Override
  public Object getPropertyValue(final Object id)
  {
    final String prop = (String) id;

    if (prop.equals(GROUP_NAME))
    {
      return _group.getGroup().getName();
    }

    return null;
  }

  @Override
  public boolean isPropertySet(final Object id)
  {
    // TODO Auto-generated method stub
    return false;
  }

  @Override
  public void resetPropertyValue(final Object id)
  {
    // TODO Auto-generated method stub

  }

  @Override
  public void setPropertyValue(final Object prop, final Object value)
  {

    final IStoreGroup coll = _group.getGroup();

    if (prop.equals(GROUP_NAME))
    {
      coll.setName((String) value);
    }
  }

}