/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.studio.valueeditors;
import org.apache.directory.studio.ldapbrowser.core.model.IAttribute;
import org.apache.directory.studio.ldapbrowser.core.model.IValue;
import org.eclipse.osgi.util.NLS;
/**
* Abstract base class for value editors that handle binary values
* in a dialog.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public abstract class AbstractDialogBinaryValueEditor extends AbstractDialogValueEditor
{
/**
* Creates a new instance of AbstractDialogBinaryValueEditor.
*/
protected AbstractDialogBinaryValueEditor()
{
}
/**
* {@inheritDoc}
*
* This implementation of getDisplayValue just returns a note,
* that the value is binary and the size of the data.
*/
public String getDisplayValue( IValue value )
{
if ( showRawValues() )
{
return getPrintableString( value );
}
else
{
Object rawValue = getRawValue( value );
if ( rawValue == null )
{
return NULL;
}
else if ( rawValue instanceof byte[] )
{
byte[] data = ( byte[] ) rawValue;
return NLS.bind( Messages.getString( "AbstractDialogBinaryValueEditor.BinaryDateNBytes" ), //$NON-NLS-1$
data.length );
}
else
{
return Messages.getString( "AbstractDialogBinaryValueEditor.InvalidData" ); //$NON-NLS-1$
}
}
}
/**
* Helper method, returns a printable string if the value
* is binary.
*
* @param value the value
*
* @return the printable string
*/
public static String getPrintableString( IValue value )
{
if ( value == null )
{
return NULL; //$NON-NLS-1$
}
else if ( value.isBinary() )
{
byte[] data = value.getBinaryValue();
StringBuffer sb = new StringBuffer();
for ( int i = 0; ( data != null ) && ( i < data.length ) && ( i < 512 ); i++ )
{
if ( data[i] > 32 && data[i] < 127 )
sb.append( ( char ) data[i] );
else
sb.append( '.' );
}
return sb.toString();
}
else if ( value.isString() )
{
return value.getStringValue();
}
else
{
return NULL; //$NON-NLS-1$
}
}
/**
* {@inheritDoc}
*
* This implementation returns IValue.EMPTY_BINARY_VALUE if
* the attribute is binary.
*/
protected Object getEmptyRawValue( IAttribute attribute )
{
if ( attribute.isBinary() )
{
return IValue.EMPTY_BINARY_VALUE;
}
else
{
return null;
}
}
/**
* {@inheritDoc}
*
* This implementation returns the binary (byte[]) value
* of the given value.
*/
public Object getRawValue( IValue value )
{
if ( value == null )
{
return null;
}
else if ( value.isString() )
{
return value.getBinaryValue();
}
else if ( value.isBinary() )
{
return value.getBinaryValue();
}
else
{
return null;
}
}
/**
* {@inheritDoc}
*
* This implementation always return the binary value
* as byte[].
*/
public Object getStringOrBinaryValue( Object rawValue )
{
if ( rawValue instanceof byte[] )
{
return rawValue;
}
else
{
return null;
}
}
}