1 files changed, 49 insertions, 0 deletions
diff --git a/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderContext.java b/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderContext.java
new file mode 100644
index 0000000..e8c157c
--- /dev/null
+++ b/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderContext.java
@@ -0,0 +1,49 @@
+package at.gv.egiz.pdfas.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);
+   }
+}