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package org.eclipse.swt.tests.gtk.snippets;
/*******************************************************************************
* Copyright (c) 2004, 2018 Actuate Corporation.
* 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:
* Actuate Corporation - initial API and implementation
*******************************************************************************/
import org.eclipse.swt.dnd.ByteArrayTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.dnd.TransferData;
/**
*
*/
public class SimpleTextTransfer extends ByteArrayTransfer
{
private static final SimpleTextTransfer instance = new SimpleTextTransfer( );
private static final String TYPE_NAME = "simple-widget.text-transfer";//$NON-NLS-1$
private static final int TYPEID = registerType( TYPE_NAME );
private SimpleTextTransfer( )
{
}
public static SimpleTextTransfer getInstance( )
{
return instance;
}
@Override
protected int[] getTypeIds( )
{
return new int[]{
TYPEID
};
}
@Override
protected String[] getTypeNames( )
{
return new String[]{
TYPE_NAME
};
}
private boolean checkText( Object object )
{
return ( object != null && object instanceof String && ( (String) object ).length( ) > 0 );
}
@Override
protected boolean validate( Object object )
{
return checkText( object );
}
/**
* This implementation of <code>javaToNative</code> converts plain widget.text
* represented by a java <code>String</code> to a platform specific
* representation.
*
* @param object
* a java <code>String</code> containing widget.text
* @param transferData
* an empty <code>TransferData</code> object; this object will
* be filled in on return with the platform specific format of
* the data
*
* @see Transfer#javaToNative
*/
@Override
public void javaToNative( Object object, TransferData transferData )
{
if ( checkText( object ) && isSupportedType( transferData ) )
{
super.javaToNative( ( (String) object ).getBytes( ), transferData );
}
}
/**
* This implementation of <code>nativeToJava</code> converts a platform
* specific representation of plain widget.text to a java <code>String</code>.
*
* @param transferData
* the platform specific representation of the data to be
* converted
* @return a java <code>String</code> containing widget.text if the conversion
* was successful; otherwise null
*
* @see Transfer#nativeToJava
*/
@Override
public Object nativeToJava( TransferData transferData )
{
if ( !isSupportedType( transferData ) )
{
return null;
}
byte[] bytes = (byte[]) super.nativeToJava( transferData );
return new String( bytes );
}
}
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