Implemented error handler

src/Spring.Social.Dropbox/Social/Dropbox/Api/DropboxApiError.cs

@@ -0,0 +1,92 @@
+#region License
+
+/*
+ * Copyright 2002-2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#endregion
+
+using System;
+
+namespace Spring.Social.Dropbox.Api
+{
+    /// <summary>
+    /// The <see cref="DropboxApiError"/> enumeration is used by the <see cref="DropboxApiException"/> class 
+    /// to indicate what kind of error caused the exception.
+    /// </summary>
+    /// <author>Bruno Baia</author>
+    public enum DropboxApiError
+    {
+        /// <summary>
+        /// Unknown.
+        /// </summary>
+        Unknown,
+
+        /// <summary>
+        /// Bad request parameter.
+        /// </summary>
+        BadParameter,
+
+        /// <summary>
+        /// Bad or expired OAuth token. 
+        /// </summary>
+        NotAuthorized,
+
+        /// <summary>
+        /// Invalid operation attempted.
+        /// </summary>
+        OperationNotPermitted,
+
+        /// <summary>
+        /// File or folder path not found.
+        /// </summary>
+        PathNotFound,
+
+        /// <summary>
+        /// Too many metadata entries to return.
+        /// </summary>
+        TooManyEntries,
+
+        /// <summary>
+        /// Chunked encoding not supported.
+        /// </summary>
+        ChunkedEncodingNotSupported,
+
+        /// <summary>
+        /// Thumbnail cannot be created for the input file.
+        /// </summary>
+        ThumbnailNotSupported,
+
+        /// <summary>
+        /// Internal server error.
+        /// </summary>
+        Server,
+
+        /// <summary>
+        /// Server is down or is being upgraded.
+        /// </summary>
+        ServerDown,
+
+        /// <summary>
+        /// Server is overloaded with request or the rate limit has been exceeded.
+        /// </summary>
+        ServerOverloadedOrRateLimitExceeded,
+
+        /// <summary>
+        /// User is over quota.
+        /// </summary>
+        StorageQuotaExceeded
+    }
+}

src/Spring.Social.Dropbox/Social/Dropbox/Api/DropboxApiException.cs

@@ -0,0 +1,112 @@
+#region License
+
+/*
+ * Copyright 2002-2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#endregion
+
+using System;
+using System.Runtime.Serialization;
+using System.Security.Permissions;
+
+namespace Spring.Social.Dropbox.Api
+{
+    /// <summary>
+    /// The exception that is thrown when a error occurs while consuming Dropbox REST API.
+    /// </summary>
+    /// <author>Bruno Baia</author>
+#if !SILVERLIGHT
+    [Serializable]
+#endif
+    public class DropboxApiException : SocialException
+    {
+        private DropboxApiError error;
+
+        /// <summary>
+        /// Gets the Dropbox error.
+        /// </summary>
+        public DropboxApiError Error
+        {
+            get { return this.error; }
+        }
+
+        /// <summary>
+        /// Creates a new instance of the <see cref="DropboxApiException"/> class.
+        /// </summary>
+        /// <param name="message">A message about the exception.</param>
+        /// <param name="error">The Dropbox error.</param>
+        public DropboxApiException(string message, DropboxApiError error)
+            : base(message)
+        {
+            this.error = error;
+        }
+
+        /// <summary>
+        /// Creates a new instance of the <see cref="DropboxApiException"/> class.
+        /// </summary>
+        /// <param name="message">A message about the exception.</param>
+        /// <param name="innerException">The inner exception that is the cause of the current exception.</param>
+        public DropboxApiException(string message, Exception innerException)
+            : base(message, innerException)
+        {
+            this.error = DropboxApiError.Unknown;
+        }
+
+#if !SILVERLIGHT && !CF_3_5
+        /// <summary>
+        /// Creates a new instance of the <see cref="DropboxApiException"/> class.
+        /// </summary>
+        /// <param name="info">
+        /// The <see cref="System.Runtime.Serialization.SerializationInfo"/>
+        /// that holds the serialized object data about the exception being thrown.
+        /// </param>
+        /// <param name="context">
+        /// The <see cref="System.Runtime.Serialization.StreamingContext"/>
+        /// that contains contextual information about the source or destination.
+        /// </param>
+        protected DropboxApiException(SerializationInfo info, StreamingContext context)
+            : base(info, context)
+        {
+            if (info != null)
+            {
+                this.error = (DropboxApiError)info.GetValue("Error", typeof(DropboxApiError));
+            }
+        }
+
+        /// <summary>
+        /// Populates the <see cref="System.Runtime.Serialization.SerializationInfo"/> with 
+        /// information about the exception.
+        /// </summary>
+        /// <param name="info">
+        /// The <see cref="System.Runtime.Serialization.SerializationInfo"/> that holds 
+        /// the serialized object data about the exception being thrown.
+        /// </param>
+        /// <param name="context">
+        /// The <see cref="System.Runtime.Serialization.StreamingContext"/> that contains contextual 
+        /// information about the source or destination.
+        /// </param>
+        [SecurityPermission(SecurityAction.Demand, SerializationFormatter = true)]
+        public override void GetObjectData(SerializationInfo info, StreamingContext context)
+        {
+            base.GetObjectData(info, context);
+            if (info != null)
+            {
+                info.AddValue("Error", this.error);
+            }
+        }
+#endif
+    }
+}