1 files changed, 38 insertions, 0 deletions
diff --git a/plugins/infra/core/org.eclipse.papyrus.infra.core/src/org/eclipse/papyrus/infra/core/editor/reload/IReloadContextProvider.java b/plugins/infra/core/org.eclipse.papyrus.infra.core/src/org/eclipse/papyrus/infra/core/editor/reload/IReloadContextProvider.java
new file mode 100644
index 00000000000..281c629e023
--- /dev/null
+++ b/plugins/infra/core/org.eclipse.papyrus.infra.core/src/org/eclipse/papyrus/infra/core/editor/reload/IReloadContextProvider.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2014 CEA and others.
+ * 
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *   Christian W. Damus (CEA) - Initial API and implementation
+ *
+ */
+package org.eclipse.papyrus.infra.core.editor.reload;
+
+
+/**
+ * An adapter protocol for objects that can provide {@code context}s to be included in the
+ * re-load state of dependent parts in an {@link EditorReloadEvent}, for the purpose of
+ * restoring the state of those objects after re-load has completed.
+ */
+public interface IReloadContextProvider {
+
+	/**
+	 * Creates an opaque token from which the receiver can be {@linkplain #restore(Object) restored} after the editor has reloaded.
+	 * 
+	 * @return an opaque editor re-load context, or {@code null} if none is needed on this occasion (for example because the receiver
+	 *         is in its default state)
+	 */
+	Object createReloadContext();
+
+	/**
+	 * Reloads the receiver's state from a token previously {@linkplain #createReloadContext() provided}.
+	 * 
+	 * @param reloadContext
+	 *        the opaque re-load context token
+	 */
+	void restore(Object reloadContext);
+}