bundles/org.eclipse.rap.rwt/src/org/eclipse/swt/internal/widgets/buttonkit/RadioButtonDelegateLCA.java

/*******************************************************************************
 * Copyright (c) 2002-2006 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
 ******************************************************************************/

package org.eclipse.swt.internal.widgets.buttonkit;

import java.io.IOException;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.internal.widgets.Props;
import org.eclipse.swt.lifecycle.*;
import org.eclipse.swt.widgets.Button;


final class RadioButtonDelegateLCA extends ButtonDelegateLCA {

  private static final String REGISTER_RADIO_BUTTON
    = "org.eclipse.swt.ButtonUtil.registerRadioButton";
  private static final String UNREGISTER_RADIO_BUTTON 
    = "org.eclipse.swt.ButtonUtil.unregisterRadioButton";
  private static final String WIDGET_SELECTED 
    = "org.eclipse.swt.ButtonUtil.radioSelected";
  
  private final JSListenerInfo JS_LISTENER_INFO 
    = new JSListenerInfo( JSConst.QX_EVENT_CHANGE_SELECTED, 
                          WIDGET_SELECTED, 
                          JSListenerType.STATE_AND_ACTION );
  
  void preserveValues( final Button button ) {
    ButtonLCAUtil.preserveValues( button );
  }

  void readData( final Button button ) {
    ButtonLCAUtil.readSelection( button );
    ControlLCAUtil.processSelection( button, null, true );
  }

  void renderInitialization( final Button button ) throws IOException {
    JSWriter writer = JSWriter.getWriterFor( button );
    writer.newWidget( "qx.ui.form.RadioButton" );
    Object[] args = new Object[] { button };
    writer.callStatic( REGISTER_RADIO_BUTTON, args );
    writer.set( JSConst.QX_FIELD_APPEARANCE, "radiobutton" );
    ControlLCAUtil.writeStyleFlags( button );
  }

  // TODO [rh] qooxdoo radioButton cannot display images, should we ignore
  //      setImage() calls when style is SWT.RADIO?
  void renderChanges( final Button button ) throws IOException {
    JSWriter writer = JSWriter.getWriterFor( button );
    // TODO [rh] the JSConst.JS_WIDGET_SELECTED does unnecessarily send
    // bounds of the widget that was clicked -> In the SelectionEvent
    // for Button the bounds are undefined
    writer.updateListener( "manager" ,
                           JS_LISTENER_INFO,
                           Props.SELECTION_LISTENERS,
                           SelectionEvent.hasListener( button ) );
    ControlLCAUtil.writeChanges( button );
    ButtonLCAUtil.writeSelection( button );
    ButtonLCAUtil.writeText( button );
    ButtonLCAUtil.writeAlignment( button );
  }

  void renderDispose( final Button button ) throws IOException {
    JSWriter writer = JSWriter.getWriterFor( button );
    writer.callStatic( UNREGISTER_RADIO_BUTTON, new Object[] { button } );
    writer.dispose();
  }
}