Use Inheritence for shared Forum and Blog Sharing Code

briar-android/src/org/briarproject/android/sharing/SharingStatusBlogActivity.java

@@ -0,0 +1,37 @@
+package org.briarproject.android.sharing;
+
+import org.briarproject.android.ActivityComponent;
+import org.briarproject.api.blogs.BlogSharingManager;
+import org.briarproject.api.contact.Contact;
+import org.briarproject.api.db.DbException;
+
+import java.util.Collection;
+
+import javax.inject.Inject;
+
+public class SharingStatusBlogActivity extends SharingStatusActivity {
+
+	// Fields that are accessed from background threads must be volatile
+	@Inject
+	protected volatile BlogSharingManager blogSharingManager;
+
+	@Override
+	public void injectActivity(ActivityComponent component) {
+		component.inject(this);
+	}
+
+	/**
+	 * This must only be called from the DbThread
+	 */
+	protected Collection<Contact> getSharedWith() throws DbException {
+		return blogSharingManager.getSharedWith(getGroupId());
+	}
+
+	/**
+	 * This must only be called from the DbThread
+	 */
+	protected Collection<Contact> getSharedBy() throws DbException {
+		return blogSharingManager.getSharedBy(getGroupId());
+	}
+
+}