/*******************************************************************************
* Copyright 2014 by E-Government Innovation Center EGIZ, Graz, Austria
* PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
* joint initiative of the Federal Chancellery Austria and Graz University of
* Technology.
*
* Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
* the European Commission - subsequent versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
* http://www.osor.eu/eupl/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the Licence is distributed on an "AS IS" basis,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the Licence for the specific language governing permissions and
* limitations under the Licence.
*
* This product combines work with different licenses. See the "NOTICE" text
* file for details on the various modules and licenses.
* The "NOTICE" text file is part of the distribution. Any derivative works
* that you distribute must include a readable copy of the "NOTICE" text file.
******************************************************************************/
/**
* Copyright 2006 by Know-Center, Graz, Austria
* PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
* joint initiative of the Federal Chancellery Austria and Graz University of
* Technology.
*
* Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
* the European Commission - subsequent versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
* http://www.osor.eu/eupl/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the Licence is distributed on an "AS IS" basis,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the Licence for the specific language governing permissions and
* limitations under the Licence.
*
* This product combines work with different licenses. See the "NOTICE" text
* file for details on the various modules and licenses.
* The "NOTICE" text file is part of the distribution. Any derivative works
* that you distribute must include a readable copy of the "NOTICE" text file.
*/
package at.gv.egiz.pdfas.lib.impl.placeholder;
/**
* Store and retrieve {@link SignaturePlaceholderData} in/from a thread local context.
*
* @author exthex
*
*/
public class SignaturePlaceholderContext {
private ThreadLocal sigHolder = new ThreadLocal();
private static SignaturePlaceholderContext instance = new SignaturePlaceholderContext();
/**
* Constructor. Private because this is a singleton.
*/
private SignaturePlaceholderContext() {
}
/**
* Get the {@link SignaturePlaceholderData} which is currently bound to this thread.
* Might be null.
*
* @return
*/
public static SignaturePlaceholderData getSignaturePlaceholderData(){
return (SignaturePlaceholderData)instance.sigHolder.get();
}
/**
*
* @return true if there is currently a {@link SignaturePlaceholderData} bound to this thread, false otherwise.
*/
public static boolean isSignaturePlaceholderDataSet() {
return instance.sigHolder.get() != null;
}
/**
* Bind a {@link SignaturePlaceholderData} to this thread.
* If the given data is null, the context will be cleared.
*
* @param data if null, clears the ThreadLocal, else binds the data to the current thread.
*/
public static void setSignaturePlaceholderData(SignaturePlaceholderData data) {
instance.sigHolder.set(data);
}
}