### Eclipse Workspace Patch 1.0
#P org.eclipse.mylyn.commons.identity
Index: src/org/eclipse/mylyn/commons/identity/gravatar/GravatarCallbackAdapter.java
===================================================================
RCS file: src/org/eclipse/mylyn/commons/identity/gravatar/GravatarCallbackAdapter.java
diff -N src/org/eclipse/mylyn/commons/identity/gravatar/GravatarCallbackAdapter.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ src/org/eclipse/mylyn/commons/identity/gravatar/GravatarCallbackAdapter.java	1 Jan 1970 00:00:00 -0000
@@ -0,0 +1,34 @@
+/*******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  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:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.mylyn.commons.identity.gravatar;
+
+/**
+ * Base implementation of {@link IGravatarCallback}
+ * 
+ * @author Kevin Sawicki (kevin@github.com)
+ */
+public abstract class GravatarCallbackAdapter implements IGravatarCallback {
+
+	/**
+	 * @see org.eclipse.mylyn.commons.identity.gravatar.IGravatarCallback#loaded(org.eclipse.mylyn.commons.identity.gravatar.Gravatar)
+	 */
+	public void loaded(Gravatar avatar) {
+		// Does nothing sub-clsases should override
+	}
+
+	/**
+	 * @see org.eclipse.mylyn.commons.identity.gravatar.IGravatarCallback#error(java.lang.Exception)
+	 */
+	public void error(Exception exception) {
+		// Does nothing sub-clsases should override
+	}
+
+}
Index: src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarCallback.java
===================================================================
RCS file: src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarCallback.java
diff -N src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarCallback.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarCallback.java	1 Jan 1970 00:00:00 -0000
@@ -0,0 +1,35 @@
+/*******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  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:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.mylyn.commons.identity.gravatar;
+
+/**
+ * Callback interface for when gravatar loading completes or fails.
+ * 
+ * @author Kevin Sawicki (kevin@github.com)
+ */
+public interface IGravatarCallback {
+
+	/**
+	 * Gravatar loaded successfully
+	 * 
+	 * @param avatar
+	 */
+	void loaded(Gravatar avatar);
+
+	/**
+	 * Gravatar loading failed
+	 * 
+	 * @param exception
+	 */
+	void error(Exception exception);
+
+}
Index: src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarHashProvider.java
===================================================================
RCS file: src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarHashProvider.java
diff -N src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarHashProvider.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarHashProvider.java	1 Jan 1970 00:00:00 -0000
@@ -0,0 +1,28 @@
+/*******************************************************************************
+ *  Copyright (c) 2011 GitHub Inc.
+ *  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:
+ *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.mylyn.commons.identity.gravatar;
+
+/**
+ * Interface for providing a gravatar hash.
+ * 
+ * @author Kevin Sawicki (kevin@github.com)
+ */
+public interface IGravatarHashProvider {
+
+	/**
+	 * Get hash for gravatar lookup
+	 * 
+	 * @return gravatar hash
+	 */
+	String getGravatarHash();
+
+}
Index: src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarStore.java
===================================================================
RCS file: src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarStore.java
diff -N src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarStore.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ src/org/eclipse/mylyn/commons/identity/gravatar/IGravatarStore.java	1 Jan 1970 00:00:00 -0000
@@ -0,0 +1,104 @@
+/*******************************************************************************
+ *  Copyright (c) 2011 Kevin Sawicki
+ *  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
+ *  
+ *******************************************************************************/
+package org.eclipse.mylyn.commons.identity.gravatar;
+
+import java.io.IOException;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+
+/**
+ * Gravatar store interface.
+ * 
+ * @author Kevin Sawicki (kevin@github.com)
+ */
+public interface IGravatarStore {
+
+	/**
+	 * Does this store contain a gravatar for the specified hash?
+	 * 
+	 * @param hash
+	 * @return true if store contains avatar, false otherwise
+	 */
+	boolean containsGravatar(String hash);
+
+	/**
+	 * Refresh all gravatars currently in the store
+	 * 
+	 * @param monitor
+	 * @return this store
+	 */
+	IGravatarStore refresh(IProgressMonitor monitor);
+
+	/**
+	 * Schedule refresh of gravatars asynchronously
+	 * 
+	 * @return this store
+	 */
+	IGravatarStore scheduleRefresh();
+
+	/**
+	 * Get last refresh time of store
+	 * 
+	 * @return local refresh time
+	 */
+	long getRefreshTime();
+
+	/**
+	 * Load gravatar by hash asynchronously
+	 * 
+	 * @param hash
+	 * @param callback
+	 * @return this store
+	 */
+	IGravatarStore loadGravatarByHash(String hash, IGravatarCallback callback);
+
+	/**
+	 * Load latest gravatar by specified hash
+	 * 
+	 * @param hash
+	 * @return avatar or null if load fails
+	 * @throws IOException
+	 */
+	Gravatar loadGravatarByHash(String hash) throws IOException;
+
+	/**
+	 * Load gravatar by e-mail address asynchronously
+	 * 
+	 * @param email
+	 * @param callback
+	 * @return this store
+	 */
+	IGravatarStore loadGravatarByEmail(String email, IGravatarCallback callback);
+
+	/**
+	 * Load latest gravatar for specified e-mail address
+	 * 
+	 * @param email
+	 * @return gravatar or null if load fails
+	 * @throws IOException
+	 */
+	Gravatar loadGravatarByEmail(String email) throws IOException;
+
+	/**
+	 * Get cached gravatar by hash
+	 * 
+	 * @param hash
+	 * @return gravatar or null if not in cache
+	 */
+	Gravatar getGravatarByHash(String hash);
+
+	/**
+	 * Get cached gravatar by e-mail address
+	 * 
+	 * @param email
+	 * @return gravatar or null if not in cache
+	 */
+	Gravatar getGravatarByEmail(String email);
+
+}