/*******************************************************************************
 * Copyright (c) 2008, 2009 Innoopract Informationssysteme GmbH.
 * 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:
 *     Innoopract Informationssysteme GmbH - initial API and implementation
 *     EclipseSource - ongoing development
 ******************************************************************************/
package org.eclipse.swt.internal.widgets.datetimekit;

import java.io.IOException;

import org.eclipse.rwt.lifecycle.AbstractWidgetLCA;
import org.eclipse.rwt.lifecycle.JSWriter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.DateTime;
import org.eclipse.swt.widgets.Widget;

public final class DateTimeLCA extends AbstractWidgetLCA {

  private static final AbstractDateTimeLCADelegate DATE_LCA
    = new DateTimeDateLCA();
  private static final AbstractDateTimeLCADelegate TIME_LCA
    = new DateTimeTimeLCA();
  private static final AbstractDateTimeLCADelegate CALENDAR_LCA
    = new DateTimeCalendarLCA();

  public void preserveValues( final Widget widget ) {
    getDelegate( widget ).preserveValues( ( DateTime )widget );
  }

  public void readData( final Widget widget ) {
    getDelegate( widget ).readData( ( DateTime )widget );
  }

  public void renderInitialization( final Widget widget ) throws IOException {
    getDelegate( widget ).renderInitialization( ( DateTime )widget );
  }

  public void renderChanges( final Widget widget ) throws IOException {
    getDelegate( widget ).renderChanges( ( DateTime )widget );
  }

  public void renderDispose( final Widget widget ) throws IOException {
    JSWriter writer = JSWriter.getWriterFor( widget );
    writer.dispose();
  }

  private static AbstractDateTimeLCADelegate getDelegate( final Widget widget )
  {
    AbstractDateTimeLCADelegate result;
    if( ( widget.getStyle() & SWT.DATE ) != 0 ) {
      result = DATE_LCA;
    } else if( ( widget.getStyle() & SWT.TIME ) != 0 ) {
      result = TIME_LCA;
    } else {
      result = CALENDAR_LCA;
    }
    return result;
  }
}