1 files changed, 66 insertions, 0 deletions
diff --git a/plugins/org.eclipse.eef.ide/src/org/eclipse/eef/ide/internal/extensions/IItemRegistry.java b/plugins/org.eclipse.eef.ide/src/org/eclipse/eef/ide/internal/extensions/IItemRegistry.java
new file mode 100644
index 000000000..6f92d7cbe
--- /dev/null
+++ b/plugins/org.eclipse.eef.ide/src/org/eclipse/eef/ide/internal/extensions/IItemRegistry.java
@@ -0,0 +1,66 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Obeo.
+ * 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:
+ *    Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.eef.ide.internal.extensions;
+
+import java.util.List;
+
+/**
+ * The registry used to track the descriptors of the extensions.
+ *
+ * @author sbegaudeau
+ *
+ * @param <T>
+ *            The type of the Objects described
+ */
+public interface IItemRegistry<T> {
+	/**
+	 * Returns all the {@link IItemDescriptor} of the registry.
+	 *
+	 * @return The list of all the {@link IItemDescriptor} of the registry
+	 */
+	List<IItemDescriptor<T>> getItemDescriptors();
+
+	/**
+	 * Returns the {@link IItemDescriptor} with the given identifier.
+	 *
+	 * @param id
+	 *            The identifier
+	 * @return The {@link IItemDescriptor} with the given identifier or null if
+	 *         none could be found
+	 */
+	IItemDescriptor<T> getItemDescriptor(String id);
+
+	/**
+	 * Adds the given {@link IItemDescriptor} to the registry.
+	 *
+	 * @param descriptor
+	 *            The descriptior
+	 * @return The previous {@link IItemDescriptor} with the same identifier, or
+	 *         null if no registered {@link IItemDescriptor} had the same
+	 *         identifier
+	 */
+	IItemDescriptor<T> add(IItemDescriptor<T> descriptor);
+
+	/**
+	 * Removes the {@link IItemDescriptor} with the given identifier.
+	 *
+	 * @param id
+	 *            The identifier
+	 * @return The {@link IItemDescriptor} removed or null if no registered
+	 *         {@link IItemDescriptor} had an identifier matching the given one
+	 */
+	IItemDescriptor<T> remove(String id);
+
+	/**
+	 * Clears the registry.
+	 */
+	void clear();
+}