/******************************************************************************
* 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;
import org.eclipse.sapphire.LoggingService;
import org.eclipse.sapphire.Sapphire;
import org.eclipse.sapphire.Value;
import org.eclipse.sapphire.modeling.EditFailedException;
import org.eclipse.sapphire.ui.DelayedTasksExecutor;
import org.eclipse.sapphire.ui.forms.FormComponentPart;
import org.eclipse.swt.widgets.Composite;
/**
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public abstract class ValuePropertyEditorPresentation extends PropertyEditorPresentation
{
private final ModifyPropertyValueTask modifyPropertyTask;
protected boolean updatingModel;
protected boolean updatingEditor;
public ValuePropertyEditorPresentation( final FormComponentPart part, final SwtPresentation parent, final Composite composite )
{
super( part, parent, composite );
this.modifyPropertyTask = new ModifyPropertyValueTask();
}
@Override
public Value<?> property()
{
return (Value<?>) super.property();
}
protected final void setPropertyValue( final String value )
{
setPropertyValue( value, true );
}
protected final void setPropertyValue( final String value, final boolean async )
{
if( async )
{
this.modifyPropertyTask.setValue( value );
DelayedTasksExecutor.schedule( this.modifyPropertyTask );
}
else
{
boolean rollback = false;
this.updatingModel = true;
try
{
try
{
property().write( value, true );
}
catch( Exception e )
{
final EditFailedException editFailedException = EditFailedException.findAsCause( e );
if( editFailedException != null )
{
rollback = true;
}
else
{
Sapphire.service( LoggingService.class ).log( e );
}
}
}
finally
{
this.updatingModel = false;
}
if( rollback )
{
handlePropertyChangedEvent();
}
}
}
private final class ModifyPropertyValueTask extends DelayedTasksExecutor.Task
{
private String value = null;
public synchronized String getValue()
{
return this.value;
}
public synchronized void setValue( final String value )
{
this.value = value;
}
public int getPriority()
{
return 100;
}
public void run()
{
setPropertyValue( getValue(), false );
}
};
}