/******************************************************************************
* Copyright (c) 2014 Oracle
* 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:
* Konstantin Komissarchik - initial implementation and ongoing maintenance
******************************************************************************/
package org.eclipse.sapphire.ui.forms.swt.internal;
import static org.eclipse.sapphire.ui.forms.swt.GridLayoutUtil.gdfill;
import static org.eclipse.sapphire.ui.forms.swt.GridLayoutUtil.gdhfill;
import static org.eclipse.sapphire.ui.forms.swt.GridLayoutUtil.gdhindent;
import static org.eclipse.sapphire.ui.forms.swt.GridLayoutUtil.gdhspan;
import static org.eclipse.sapphire.ui.forms.swt.GridLayoutUtil.glayout;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.sapphire.Event;
import org.eclipse.sapphire.Listener;
import org.eclipse.sapphire.ui.Presentation;
import org.eclipse.sapphire.ui.SapphirePart.ImageChangedEvent;
import org.eclipse.sapphire.ui.SapphirePart.LabelChangedEvent;
import org.eclipse.sapphire.ui.forms.FormComponentPart;
import org.eclipse.sapphire.ui.forms.TabGroupPagePart;
import org.eclipse.sapphire.ui.forms.TabGroupPart;
import org.eclipse.sapphire.ui.forms.swt.FormComponentPresentation;
import org.eclipse.sapphire.ui.forms.swt.SwtPresentation;
import org.eclipse.sapphire.util.ListFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
/**
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public final class TabGroupPresentation extends FormComponentPresentation
{
private List<Presentation> pages;
public TabGroupPresentation( final FormComponentPart part, final SwtPresentation parent, final Composite composite )
{
super( part, parent, composite );
}
@Override
public TabGroupPart part()
{
return (TabGroupPart) super.part();
}
@Override
public void render()
{
final TabGroupPart part = part();
final ListFactory<Presentation> pagesListFactory = ListFactory.start();
final TabFolder tabFolderControl = new TabFolder( composite(), SWT.TOP );
tabFolderControl.setLayoutData( gdhindent( gdhspan( ( part.getScaleVertically() ? gdfill() : gdhfill() ), 2 ), 9 ) );
register( tabFolderControl );
for( final TabGroupPagePart page : part.pages() )
{
final Composite tabControl = new Composite( tabFolderControl, SWT.NONE );
tabControl.setLayout( glayout( 2, 1, 10, 10, 10 ) );
final TabItem tab = new TabItem( tabFolderControl, SWT.NONE );
tab.setText( page.getLabel() );
tab.setControl( tabControl );
final Map<ImageDescriptor,Image> images = new HashMap<ImageDescriptor,Image>();
refreshTabImage( tab, page, images );
final Listener tabPartListener = new Listener()
{
@Override
public void handle( final Event event )
{
if( event instanceof LabelChangedEvent )
{
tab.setText( page.getLabel() );
}
else if( event instanceof ImageChangedEvent )
{
refreshTabImage( tab, page, images );
}
}
};
page.attach( tabPartListener );
tab.addDisposeListener
(
new DisposeListener()
{
public void widgetDisposed( final DisposeEvent event )
{
page.detach( tabPartListener );
for( Image image : images.values() )
{
image.dispose();
}
}
}
);
final Presentation presentation = page.createPresentation( this, tabControl );
pagesListFactory.add( presentation );
presentation.render();
}
tabFolderControl.setSelection( part.pages().indexOf( part.selection() ) );
tabFolderControl.addSelectionListener
(
new SelectionAdapter()
{
@Override
public void widgetSelected( final SelectionEvent event )
{
final int tabGroupPageIndex = tabFolderControl.getSelectionIndex();
part.select( part.pages().get( tabGroupPageIndex ) );
}
}
);
this.pages = pagesListFactory.result();
}
private static void refreshTabImage( final TabItem tab, final TabGroupPagePart tabPart, final Map<ImageDescriptor,Image> images )
{
Image image = null;
final ImageDescriptor imageDescriptor = tabPart.getImage();
if( imageDescriptor != null )
{
image = images.get( imageDescriptor );
if( image == null )
{
image = imageDescriptor.createImage();
images.put( imageDescriptor, image );
}
}
tab.setImage( image );
}
@Override
public void dispose()
{
super.dispose();
if( this.pages != null )
{
for( final Presentation page : this.pages )
{
page.dispose();
}
this.pages = null;
}
}
}