added worker thread

diy-layout-creator --username bancika@gmail.com/DIYLC/src/org/diylc/common/ITask.java

@@ -0,0 +1,34 @@
+package org.diylc.common;
+
+/**
+ * Abstract layer between the app and platform worker thread implementation.
+ * 
+ * @author Branislav Stojkovic
+ * 
+ * @param <T>
+ */
+public interface ITask<T> {
+
+	/**
+	 * Runs in background thread.
+	 * 
+	 * @return
+	 * @throws Exception
+	 */
+	T doInBackground() throws Exception;
+
+	/**
+	 * Called if background thread fails.
+	 * 
+	 * @param e
+	 */
+	void failed(Exception e);
+
+	/**
+	 * Called if background thread is executed correctly, the result is passed
+	 * as a parameter.
+	 * 
+	 * @param result
+	 */
+	void complete(T result);
+}