Quite a bit of changes: added possibility to better detect _why_ upload failed. Tested all events, should fix #174

Javadoc still contains mention of ProgressEvent, that does not exist.

svn changeset:3934/svn branch:trunk

src/com/itmill/toolkit/ui/Upload.java

@@ -4,7 +4,6 @@
 
 package com.itmill.toolkit.ui;
 
-import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.lang.reflect.Method;
@@ -120,17 +119,16 @@ public class Upload extends AbstractComponent implements Component.Focusable {
         // Gets the output target stream
         final OutputStream out = receiver.receiveUpload(filename, type);
         if (out == null) {
-            fireUploadInterrupted(filename, type, 0);
+            fireNoOutputStream(filename, type, 0);
             endUpload();
-            throw new RuntimeException(
-                    "Error getting outputstream from upload receiver");
+            return;
         }
 
         final InputStream in = upload.getStream();
 
         if (null == in) {
             // No file, for instance non-existent filename in html upload
-            fireUploadInterrupted(filename, type, 0);
+            fireNoInputStream(filename, type, 0);
             endUpload();
             return;
         }
@@ -155,10 +153,10 @@ public class Upload extends AbstractComponent implements Component.Focusable {
             endUpload();
             requestRepaint();
 
-        } catch (final IOException e) {
+        } catch (final Exception e) {
 
             // Download interrupted
-            fireUploadInterrupted(filename, type, totalBytes);
+            fireUploadInterrupted(filename, type, totalBytes, e);
             endUpload();
         }
     }
@@ -359,18 +357,91 @@ public class Upload extends AbstractComponent implements Component.Focusable {
          */
         private static final long serialVersionUID = 3833746590157386293L;
 
+        private Exception reason = null;
+
+        /**
+         * 
+         * @param source
+         * @param filename
+         * @param MIMEType
+         * @param length
+         * @param exception
+         */
+        public FailedEvent(Upload source, String filename, String MIMEType,
+                long length, Exception reason) {
+            this(source, filename, MIMEType, length);
+            this.reason = reason;
+        }
+
         /**
          * 
          * @param source
          * @param filename
          * @param MIMEType
          * @param length
+         * @param exception
          */
         public FailedEvent(Upload source, String filename, String MIMEType,
                 long length) {
             super(source, filename, MIMEType, length);
         }
 
+        /**
+         * Gets the exception that caused the failure.
+         * 
+         * @return the exception that caused the failure, null if n/a
+         */
+        public Exception getReason() {
+            return reason;
+        }
+
+    }
+
+    /**
+     * FailedEvent that indicates that an output stream could not be obtained.
+     */
+    public class NoOutputStreamEvent extends FailedEvent {
+
+        /**
+         * Serial generated by eclipse.
+         */
+        private static final long serialVersionUID = 4745219890852396500L;
+
+        /**
+         * 
+         * @param source
+         * @param filename
+         * @param MIMEType
+         * @param length
+         */
+        public NoOutputStreamEvent(Upload source, String filename,
+                String MIMEType, long length) {
+            super(source, filename, MIMEType, length);
+        }
+    }
+
+    /**
+     * FailedEvent that indicates that an input stream could not be obtained.
+     */
+    public class NoInputStreamEvent extends FailedEvent {
+
+        /**
+         * Serial generated by eclipse.
+         */
+        private static final long serialVersionUID = -529960205445737170L;
+
+        /**
+         * 
+         * @param source
+         * @param filename
+         * @param MIMEType
+         * @param length
+         */
+        public NoInputStreamEvent(Upload source, String filename,
+                String MIMEType, long length) {
+            super(source, filename, MIMEType, length);
+        }
+
     }
 
     /**
@@ -554,7 +625,7 @@ public class Upload extends AbstractComponent implements Component.Focusable {
      *                the Listener to be removed.
      */
     public void removeListener(StartedListener listener) {
-        removeListener(FinishedEvent.class, listener, UPLOAD_STARTED_METHOD);
+        removeListener(StartedEvent.class, listener, UPLOAD_STARTED_METHOD);
     }
 
     /**
@@ -594,7 +665,7 @@ public class Upload extends AbstractComponent implements Component.Focusable {
      *                the Listener to be removed.
      */
     public void removeListener(FailedListener listener) {
-        removeListener(FinishedEvent.class, listener, UPLOAD_FAILED_METHOD);
+        removeListener(FailedEvent.class, listener, UPLOAD_FAILED_METHOD);
     }
 
     /**
@@ -629,7 +700,7 @@ public class Upload extends AbstractComponent implements Component.Focusable {
     }
 
     /**
-     * Emit upload received event.
+     * Emit upload finished event.
      * 
      * @param filename
      * @param MIMEType
@@ -641,7 +712,7 @@ public class Upload extends AbstractComponent implements Component.Focusable {
     }
 
     /**
-     * Emits the upload interrupted event.
+     * Emits the upload failed event.
      * 
      * @param filename
      * @param MIMEType
@@ -652,6 +723,23 @@ public class Upload extends AbstractComponent implements Component.Focusable {
         fireEvent(new Upload.FailedEvent(this, filename, MIMEType, length));
     }
 
+    protected void fireNoInputStream(String filename, String MIMEType,
+            long length) {
+        fireEvent(new Upload.NoInputStreamEvent(this, filename, MIMEType,
+                length));
+    }
+
+    protected void fireNoOutputStream(String filename, String MIMEType,
+            long length) {
+        fireEvent(new Upload.NoOutputStreamEvent(this, filename, MIMEType,
+                length));
+    }
+
+    protected void fireUploadInterrupted(String filename, String MIMEType,
+            long length, Exception e) {
+        fireEvent(new Upload.FailedEvent(this, filename, MIMEType, length, e));
+    }
+
     /**
      * Emits the upload success event.
      *