| /* |
| * 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.ldapbrowser.common.dnd; |
| |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.studio.ldapbrowser.common.BrowserCommonConstants; |
| import org.apache.directory.studio.ldapbrowser.core.BrowserCorePlugin; |
| import org.apache.directory.studio.ldapbrowser.core.model.IAttribute; |
| import org.apache.directory.studio.ldapbrowser.core.model.IBrowserConnection; |
| import org.apache.directory.studio.ldapbrowser.core.model.IEntry; |
| import org.apache.directory.studio.ldapbrowser.core.model.IValue; |
| import org.eclipse.swt.dnd.ByteArrayTransfer; |
| import org.eclipse.swt.dnd.Transfer; |
| import org.eclipse.swt.dnd.TransferData; |
| |
| |
| /** |
| * A {@link Transfer} that could be used to transfer {@link IValue} objects. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class ValuesTransfer extends ByteArrayTransfer |
| { |
| |
| /** The Constant TYPENAME. */ |
| private static final String TYPENAME = BrowserCommonConstants.DND_VALUES_TRANSFER; |
| |
| /** The Constant TYPEID. */ |
| private static final int TYPEID = registerType( TYPENAME ); |
| |
| /** The instance. */ |
| private static ValuesTransfer instance = new ValuesTransfer(); |
| |
| |
| /** |
| * Gets the instance. |
| * |
| * @return the instance |
| */ |
| public static ValuesTransfer getInstance() |
| { |
| return instance; |
| } |
| |
| |
| /** |
| * Creates a new instance of ValuesTransfer. |
| */ |
| private ValuesTransfer() |
| { |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| * |
| * This implementation only accepts {@link IValue} objects. |
| * It converts the id of the connection, the entry's Dn, the |
| * attribute description and the value to the platform specific |
| * representation. |
| */ |
| public void javaToNative( Object object, TransferData transferData ) |
| { |
| if ( !( object instanceof IValue[] ) ) |
| { |
| return; |
| } |
| |
| if ( isSupportedType( transferData ) ) |
| { |
| IValue[] values = ( IValue[] ) object; |
| try |
| { |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| DataOutputStream writeOut = new DataOutputStream( out ); |
| |
| for ( int i = 0; i < values.length; i++ ) |
| { |
| byte[] connectionId = values[i].getAttribute().getEntry().getBrowserConnection().getConnection() |
| .getId().getBytes( "UTF-8" ); //$NON-NLS-1$ |
| writeOut.writeInt( connectionId.length ); |
| writeOut.write( connectionId ); |
| byte[] dn = values[i].getAttribute().getEntry().getDn().getName().getBytes( "UTF-8" ); //$NON-NLS-1$ |
| writeOut.writeInt( dn.length ); |
| writeOut.write( dn ); |
| byte[] attributeName = values[i].getAttribute().getDescription().getBytes( "UTF-8" ); //$NON-NLS-1$ |
| writeOut.writeInt( attributeName.length ); |
| writeOut.write( attributeName ); |
| if ( values[i].isString() ) |
| { |
| byte[] value = values[i].getStringValue().getBytes( "UTF-8" ); //$NON-NLS-1$ |
| writeOut.writeBoolean( true ); |
| writeOut.writeInt( value.length ); |
| writeOut.write( value ); |
| } |
| else if ( values[i].isBinary() ) |
| { |
| byte[] value = values[i].getBinaryValue(); |
| writeOut.writeBoolean( false ); |
| writeOut.writeInt( value.length ); |
| writeOut.write( value ); |
| } |
| } |
| |
| byte[] buffer = out.toByteArray(); |
| writeOut.close(); |
| |
| super.javaToNative( buffer, transferData ); |
| |
| } |
| catch ( IOException e ) |
| { |
| } |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| * |
| * This implementation converts the platform specific representation |
| * to the connection name, entry Dn, attribute description and value and |
| * restores the {@link IValue} object. |
| */ |
| public Object nativeToJava( TransferData transferData ) |
| { |
| try |
| { |
| if ( isSupportedType( transferData ) ) |
| { |
| byte[] buffer = ( byte[] ) super.nativeToJava( transferData ); |
| if ( buffer == null ) |
| { |
| return null; |
| } |
| |
| List<IValue> valueList = new ArrayList<IValue>(); |
| try |
| { |
| ByteArrayInputStream in = new ByteArrayInputStream( buffer ); |
| DataInputStream readIn = new DataInputStream( in ); |
| |
| do |
| { |
| IBrowserConnection connection = null; |
| if ( readIn.available() > 1 ) |
| { |
| int size = readIn.readInt(); |
| byte[] connectionId = new byte[size]; |
| readIn.read( connectionId ); |
| connection = BrowserCorePlugin.getDefault().getConnectionManager() |
| .getBrowserConnectionById( new String( connectionId, "UTF-8" ) ); //$NON-NLS-1$ |
| } |
| |
| IEntry entry = null; |
| if ( readIn.available() > 1 && connection != null ) |
| { |
| int size = readIn.readInt(); |
| byte[] dn = new byte[size]; |
| readIn.read( dn ); |
| entry = connection.getEntryFromCache( new Dn( new String( dn, "UTF-8" ) ) ); //$NON-NLS-1$ |
| } |
| else |
| { |
| return null; |
| } |
| |
| IAttribute attribute = null; |
| if ( readIn.available() > 1 && entry != null ) |
| { |
| int size = readIn.readInt(); |
| byte[] attributeName = new byte[size]; |
| readIn.read( attributeName ); |
| attribute = entry.getAttribute( new String( attributeName, "UTF-8" ) ); //$NON-NLS-1$ |
| } |
| else |
| { |
| return null; |
| } |
| |
| IValue value = null; |
| if ( readIn.available() > 1 && attribute != null ) |
| { |
| boolean isString = readIn.readBoolean(); |
| int size = readIn.readInt(); |
| byte[] val = new byte[size]; |
| readIn.read( val ); |
| String test = new String( val, "UTF-8" ); //$NON-NLS-1$ |
| |
| IValue[] values = attribute.getValues(); |
| for ( int i = 0; i < values.length; i++ ) |
| { |
| if ( isString && values[i].isString() && test.equals( values[i].getStringValue() ) ) |
| { |
| value = values[i]; |
| break; |
| } |
| else if ( !isString && values[i].isBinary() |
| && test.equals( new String( values[i].getBinaryValue(), "UTF-8" ) ) ) //$NON-NLS-1$ |
| { |
| value = values[i]; |
| break; |
| } |
| } |
| } |
| else |
| { |
| return null; |
| } |
| |
| if ( value != null ) |
| { |
| valueList.add( value ); |
| } |
| } |
| while ( readIn.available() > 1 ); |
| |
| readIn.close(); |
| } |
| catch ( IOException ex ) |
| { |
| return null; |
| } |
| |
| return valueList.isEmpty() ? null : valueList.toArray( new IValue[valueList.size()] ); |
| } |
| |
| } |
| catch ( Exception e ) |
| { |
| e.printStackTrace(); |
| } |
| |
| return null; |
| |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| protected String[] getTypeNames() |
| { |
| return new String[] |
| { TYPENAME }; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| protected int[] getTypeIds() |
| { |
| return new int[] |
| { TYPEID }; |
| } |
| |
| } |