Package org.objectstyle.wolips.eomodeler.editors.attributes

Source Code of org.objectstyle.wolips.eomodeler.editors.attributes.EOAttributesCellModifier

/*
* ====================================================================
*
* The ObjectStyle Group Software License, Version 1.0
*
* Copyright (c) 2006 The ObjectStyle Group and individual authors of the
* software. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowlegement: "This product includes software
* developed by the ObjectStyle Group (http://objectstyle.org/)." Alternately,
* this acknowlegement may appear in the software itself, if and wherever such
* third-party acknowlegements normally appear.
*
* 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse or
* promote products derived from this software without prior written permission.
* For written permission, please contact andrus@objectstyle.org.
*
* 5. Products derived from this software may not be called "ObjectStyle" nor
* may "ObjectStyle" appear in their names without prior written permission of
* the ObjectStyle Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* OBJECTSTYLE GROUP OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals on
* behalf of the ObjectStyle Group. For more information on the ObjectStyle
* Group, please see <http://objectstyle.org/>.
*/
package org.objectstyle.wolips.eomodeler.editors.attributes;

import java.util.LinkedList;
import java.util.List;

import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.TableViewer;
import org.objectstyle.wolips.baseforuiplugins.utils.KeyComboBoxCellEditor;
import org.objectstyle.wolips.eomodeler.Messages;
import org.objectstyle.wolips.eomodeler.core.model.AbstractEOArgument;
import org.objectstyle.wolips.eomodeler.core.model.EOAttribute;
import org.objectstyle.wolips.eomodeler.core.model.EOEntity;
import org.objectstyle.wolips.eomodeler.utils.TablePropertyCellModifier;
import org.objectstyle.wolips.eomodeler.utils.TableUtils;

public class EOAttributesCellModifier extends TablePropertyCellModifier {
  private static final String NO_PROTOYPE_VALUE = Messages.getString("EOAttributesCellModifier.noPrototype");

  private CellEditor[] myCellEditors;

  private List<String> myPrototypeNames;

  public EOAttributesCellModifier(TableViewer _attributesTableViewer, CellEditor[] _cellEditors) {
    super(_attributesTableViewer);
    myCellEditors = _cellEditors;
  }

  protected boolean _canModify(Object _element, String _property) {
    boolean canModify = true;
    // EOAttribute attribute = (EOAttribute) _element;
    // if (attribute.isInherited()) {
    // canModify = false;
    // }
    if (EOAttribute.PROTOTYPE.equals(_property)) {
      EOEntity entity = (EOEntity) getTableViewer().getInput();
      myPrototypeNames = new LinkedList<String>(entity.getModel().getPrototypeAttributeNames());
      myPrototypeNames.add(0, EOAttributesCellModifier.NO_PROTOYPE_VALUE);
      String[] prototypeNames = myPrototypeNames.toArray(new String[myPrototypeNames.size()]);
      int columnNumber = TableUtils.getColumnNumberForTablePropertyNamed(EOAttribute.class.getName(), _property);
      if (columnNumber != -1) {
        KeyComboBoxCellEditor cellEditor = (KeyComboBoxCellEditor) myCellEditors[columnNumber];
        cellEditor.setItems(prototypeNames);
      }
    }
    return canModify;
  }

  public Object getValue(Object _element, String _property) {
    EOAttribute attribute = (EOAttribute) _element;
    Object value = null;
    if (EOAttribute.PROTOTYPE.equals(_property)) {
      EOAttribute prototype = attribute.getPrototype();
      String prototypeName;
      if (prototype == null) {
        prototypeName = EOAttributesCellModifier.NO_PROTOYPE_VALUE;
      } else {
        prototypeName = prototype.getName();
      }
      value = new Integer(myPrototypeNames.indexOf(prototypeName));
    } else if (AbstractEOArgument.ALLOWS_NULL.equals(_property) || EOAttribute.CLASS_PROPERTY.equals(_property) || EOAttribute.CLIENT_CLASS_PROPERTY.equals(_property) || EOAttribute.INDEXED.equals(_property) || EOAttribute.PRIMARY_KEY.equals(_property) || EOAttribute.READ_ONLY.equals(_property) || EOAttribute.USED_FOR_LOCKING.equals(_property)) {
      value = super.getValue(_element, _property);
      if (value == null && !attribute.getEntity().isPrototype()) {
        value = Boolean.FALSE;
      }
    } else {
      value = super.getValue(_element, _property);
    }
    return value;
  }

  protected boolean _modify(Object _element, String _property, Object _value) throws Throwable {
    boolean modified = false;
    EOAttribute attribute = (EOAttribute) _element;
    if (EOAttribute.PROTOTYPE.equals(_property)) {
      Integer prototypeIndex = (Integer) _value;
      int prototypeIndexInt = prototypeIndex.intValue();
      String prototypeName = (prototypeIndexInt == -1) ? null : (String) myPrototypeNames.get(prototypeIndexInt);
      if (EOAttributesCellModifier.NO_PROTOYPE_VALUE.equals(prototypeName)) {
        attribute.setPrototype(null, true);
      } else {
        EOAttribute prototype = attribute.getEntity().getModel().getPrototypeAttributeNamed(prototypeName);
        attribute.setPrototype(prototype, true);
      }
      modified = true;
    }
    return modified;
  }
}
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