/******************************************************************************
* 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.samples.contacts.internal;
import org.eclipse.sapphire.DisposeEvent;
import org.eclipse.sapphire.FilteredListener;
import org.eclipse.sapphire.Listener;
import org.eclipse.sapphire.Property;
import org.eclipse.sapphire.PropertyContentEvent;
import org.eclipse.sapphire.Value;
import org.eclipse.sapphire.samples.contacts.Contact;
import org.eclipse.sapphire.samples.contacts.ContactRepository;
import org.eclipse.sapphire.ui.Presentation;
import org.eclipse.sapphire.ui.SapphireAction;
import org.eclipse.sapphire.ui.SapphireActionHandler;
import org.eclipse.sapphire.ui.def.ActionHandlerDef;
import org.eclipse.sapphire.ui.forms.PropertyEditorPart;
/**
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public final class CreateContactActionHandler extends SapphireActionHandler
{
private Property property;
@Override
public void init( final SapphireAction action,
final ActionHandlerDef def )
{
super.init( action, def );
this.property = ( (PropertyEditorPart) getPart() ).property();
final Listener listener = new FilteredListener<PropertyContentEvent>()
{
@Override
protected void handleTypedEvent( final PropertyContentEvent event )
{
refreshEnablementState();
}
};
this.property.element().nearest( ContactRepository.class ).attach( listener, "Contacts/Name" );
this.property.attach( listener );
refreshEnablementState();
attach
(
new FilteredListener<DisposeEvent>()
{
@Override
protected void handleTypedEvent( final DisposeEvent event )
{
CreateContactActionHandler.this.property.element().nearest( ContactRepository.class ).detach( listener, "Contacts/Name" );
CreateContactActionHandler.this.property.detach( listener );
}
}
);
}
private void refreshEnablementState()
{
final String name = ( (Value<?>) this.property ).text();
final ContactRepository cdb = this.property.element().nearest( ContactRepository.class );
boolean enabled;
if( name == null )
{
enabled = false;
}
else
{
enabled = true;
for( Contact contact : cdb.getContacts() )
{
if( name.equals( contact.getName().text() ) )
{
enabled = false;
break;
}
}
}
setEnabled( enabled );
}
@Override
protected Object run( final Presentation context )
{
final String name = ( (Value<?>) this.property ).text();
final ContactRepository cdb = this.property.element().nearest( ContactRepository.class );
final Contact newContact = cdb.getContacts().insert();
newContact.setName( name );
return null;
}
}