/* 
 * Copyright (c) 2008 Stiftung Deutsches Elektronen-Synchrotron, 
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. 
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED 
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE 
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR 
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. 
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, 
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS 
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY 
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
 package org.csstudio.sds.ui.internal.properties.propertydescriptors;

import org.csstudio.sds.model.PropertyTypesEnum;
import org.csstudio.sds.ui.internal.properties.DoubleArrayCellEditor;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.swt.widgets.Composite;

/**
 * Descriptor for a property that has a value which should be edited with a
 * double cell editor.
 * 
 * @author Alexander Will
 * @version $Revision: 1.1 $
 * 
 */
public final class DoubleArrayPropertyDescriptor extends TextPropertyDescriptor {

	/**
	 * Standard constructor.
	 * 
	 * @param id
	 *            the id of the property
	 * @param displayName
	 *            the name to display for the property
	 * @param category
	 *            the category
	 */
	public DoubleArrayPropertyDescriptor(final Object id, final String displayName, PropertyTypesEnum type, final
			String category) {
		super(id, displayName, type, category);
		
		this.setLabelProvider(new DoubleArrayLabelProvider());
	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	public CellEditor createPropertyEditor(final Composite parent) {
		CellEditor editor = new DoubleArrayCellEditor(parent);
		if (getValidator() != null) {
			editor.setValidator(getValidator());
		}
		return editor;
	}
	
	/**
	 * A label provider for a double[] value.
	 * 
	 * @author Kai Meyer
	 * 
	 */
	private final class DoubleArrayLabelProvider extends LabelProvider {
		/**
		 * {@inheritDoc}
		 */
		@Override
		public String getText(final Object element) {
			if (element instanceof double[]) {
				StringBuffer buffer = new StringBuffer();
				buffer.append("(");
				double[] array = (double[]) element;
				if (array.length>0) {
					buffer.append(array[0]);
					for (int i=1;i<array.length;i++) {
						buffer.append("; ");
						buffer.append(array[i]);
					}
				}
				buffer.append(")");
				return buffer.toString();
			} else {
				return element.toString();
			}
		}
	}
}