/*******************************************************************************
 * Copyright (c) 2009, 2012 EclipseSource and others.
 * 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:
 *    EclipseSource - initial API and implementation
 ******************************************************************************/
package org.eclipse.rap.internal.design.example.builder;

import org.eclipse.rap.internal.design.example.ILayoutSetConstants;
import org.eclipse.rap.internal.design.example.managers.CoolBarManager;
import org.eclipse.rap.rwt.RWT;
import org.eclipse.rap.ui.interactiondesign.layout.ElementBuilder;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;


public class CoolbarLayerBuilder extends ElementBuilder {

  private final Image bg;
  private final Image right;
  private final Image left;
  private Composite layer;

  public CoolbarLayerBuilder( Composite parent, String layoutSetId ) {
    super( parent, layoutSetId );
    bg = getImage( ILayoutSetConstants.OVERFLOW_BG);
    right = getImage( ILayoutSetConstants.OVERFLOW_RIGHT );
    left = getImage( ILayoutSetConstants.OVERFLOW_LEFT );
  }

  @Override
  public void addControl( Control control, Object layoutData ) {
  }

  @Override
  public void addControl( Control control, String positionId ) {
  }

  @Override
  public void addImage( Image image, Object layoutData ) {
  }

  @Override
  public void addImage( Image image, String positionId ) {
  }

  @Override
  public void build() {
    Composite parent = getParent();
    if( left != null ) {
      parent = getParent().getParent();
    }
    Composite layerParent = new Composite( parent, SWT.NONE );
    layerParent.setBackgroundMode( SWT.INHERIT_FORCE );
    layerParent.setData( RWT.CUSTOM_VARIANT, "compTrans" ); //$NON-NLS-1$
    layerParent.setLayout( new FormLayout() );
    FormData fdLayerParent = new FormData();
    layerParent.setLayoutData( fdLayerParent );
    fdLayerParent.top = new FormAttachment( 0, 32 );
    fdLayerParent.height = bg.getBounds().height;

    Label rightLabel = new Label( layerParent, SWT.NONE );
    rightLabel.setImage( right );
    FormData fdRightLabel = new FormData();
    rightLabel.setLayoutData( fdRightLabel );
    fdRightLabel.top = new FormAttachment( 0 );
    fdRightLabel.left = new FormAttachment( 100, - right.getBounds().width );
    fdRightLabel.height = right.getBounds().height;
    fdRightLabel.width = right.getBounds().width;

    layer = new Composite( layerParent, SWT.NONE );
    layer.setLayout( new FormLayout() );
    layer.setBackgroundImage( bg );
    FormData fdLayer = new FormData();
    layer.setLayoutData( fdLayer );
    fdLayer.top = new FormAttachment( 0 );
    fdLayer.right = new FormAttachment( rightLabel );
    fdLayer.height = bg.getBounds().height;

    if( left != null ) {
      Label leftLabel = new Label( layerParent, SWT.NONE );
      leftLabel.setImage( left );
      FormData fdLeftLabel = new FormData();
      leftLabel.setLayoutData( fdLeftLabel );
      fdLeftLabel.left = new FormAttachment( 0 );
      fdLeftLabel.top = new FormAttachment( 0 );
      fdLeftLabel.height = left.getBounds().height;
      fdLeftLabel.width = left.getBounds().width;
      fdLayer.left = new FormAttachment( leftLabel );
    } else {
      fdLayer.left = new FormAttachment( 0 );
    }

  }

  @Override
  public void dispose() {
  }

  @Override
  public Control getControl() {
    return layer;
  }

  @Override
  public Point getSize() {
    return layer.getSize();
  }

  @Override
  public Object getAdapter( final Class adapter ) {
    Object result = null;
    if( adapter == CoolBarManager.class ) {
      result = left;
    }
    return result;
  }
}