Virtualize this.

	* camel-data-wrapper.c (camel_data_wrapper_is_offline): Virtualize
	this.

	* camel-medium.c (is_offline): A medium is offline if its content
	object is offline.

	* camel-multipart.c (is_offline): A multipart is offline if any of
	its subparts are offline.

5 files changed, 56 insertions, 6 deletions

diff --git a/camel/ChangeLog b/camel/ChangeLog
index ba7c9ecec..18bf3b6da 100644
--- a/camel/ChangeLog
+++ b/camel/ChangeLog
@@ -1,3 +1,14 @@
+2001-09-18  Dan Winship  <danw@ximian.com>
+
+	* camel-data-wrapper.c (camel_data_wrapper_is_offline): Virtualize
+	this.
+
+	* camel-medium.c (is_offline): A medium is offline if its content
+	object is offline.
+
+	* camel-multipart.c (is_offline): A multipart is offline if any of
+	its subparts are offline.
+
 2001-09-18  Jeffrey Stedfast  <fejj@ximian.com>
 
 	* camel-charset-map.c: Added korean charset conversion.
diff --git a/camel/camel-data-wrapper.c b/camel/camel-data-wrapper.c
index 3a618ead6..a549f6bed 100644
--- a/camel/camel-data-wrapper.c
+++ b/camel/camel-data-wrapper.c
@@ -48,6 +48,7 @@ static void set_mime_type (CamelDataWrapper *data_wrapper, const gchar *mime_typ
 static gchar *get_mime_type (CamelDataWrapper *data_wrapper);
 static CamelContentType *get_mime_type_field (CamelDataWrapper *data_wrapper);
 static void set_mime_type_field (CamelDataWrapper *data_wrapper, CamelContentType *mime_type);
+static gboolean is_offline (CamelDataWrapper *data_wrapper);
 
 static void
 camel_data_wrapper_class_init (CamelDataWrapperClass *camel_data_wrapper_class)
@@ -60,8 +61,8 @@ camel_data_wrapper_class_init (CamelDataWrapperClass *camel_data_wrapper_class)
 	camel_data_wrapper_class->get_mime_type = get_mime_type;
 	camel_data_wrapper_class->get_mime_type_field = get_mime_type_field;
 	camel_data_wrapper_class->set_mime_type_field = set_mime_type_field;
-
 	camel_data_wrapper_class->construct_from_stream = construct_from_stream;
+	camel_data_wrapper_class->is_offline = is_offline;
 }
 
 static void
@@ -280,6 +281,12 @@ camel_data_wrapper_set_mime_type_field (CamelDataWrapper *data_wrapper,
 }
 
 
+static gboolean
+is_offline (CamelDataWrapper *data_wrapper)
+{
+	return data_wrapper->offline;
+}
+
 /**
  * camel_data_wrapper_is_offline:
  * @data_wrapper: a data wrapper
@@ -291,5 +298,5 @@ camel_data_wrapper_set_mime_type_field (CamelDataWrapper *data_wrapper,
 gboolean
 camel_data_wrapper_is_offline (CamelDataWrapper *data_wrapper)
 {
-	return data_wrapper->offline;
+	return CDW_CLASS (data_wrapper)->is_offline (data_wrapper);
 }
diff --git a/camel/camel-data-wrapper.h b/camel/camel-data-wrapper.h
index 9d7b62dd0..2d1e44c1f 100644
--- a/camel/camel-data-wrapper.h
+++ b/camel/camel-data-wrapper.h
@@ -69,6 +69,9 @@ typedef struct {
 
 	int                 (*construct_from_stream)  (CamelDataWrapper *data_wrapper,
 						       CamelStream *);
+
+	gboolean            (*is_offline)             (CamelDataWrapper *data_wrapper);
+
 } CamelDataWrapperClass;
 
 /* Standard Camel function */
diff --git a/camel/camel-medium.c b/camel/camel-medium.c
index 818df6949..95480754a 100644
--- a/camel/camel-medium.c
+++ b/camel/camel-medium.c
@@ -40,6 +40,7 @@ static CamelDataWrapperClass *parent_class = NULL;
 /* Returns the class for a CamelMedium */
 #define CM_CLASS(so) CAMEL_MEDIUM_CLASS (CAMEL_OBJECT_GET_CLASS(so))
 
+static gboolean is_offline (CamelDataWrapper *data_wrapper);
 static void add_header (CamelMedium *medium, const gchar *header_name,
 			const void *header_value);
 static void set_header (CamelMedium *medium, const gchar *header_name, const void *header_value);
@@ -56,13 +57,14 @@ static void set_content_object (CamelMedium *medium,
 static void
 camel_medium_class_init (CamelMediumClass *camel_medium_class)
 {
-	/*
-	 * CamelDataWrapperClass *camel_data_wrapper_class =
-	 *	CAMEL_DATA_WRAPPER_CLASS (camel_medium_class);
-	 */
+	CamelDataWrapperClass *camel_data_wrapper_class =
+		CAMEL_DATA_WRAPPER_CLASS (camel_medium_class);
 
 	parent_class = CAMEL_DATA_WRAPPER_CLASS (camel_type_get_global_classfuncs (camel_data_wrapper_get_type ()));
 
+	/* virtual method overload */
+	camel_data_wrapper_class->is_offline = is_offline;
+
 	/* virtual method definition */
 	camel_medium_class->add_header = add_header;
 	camel_medium_class->set_header = set_header;
@@ -112,6 +114,13 @@ camel_medium_get_type (void)
 	return camel_medium_type;
 }
 
+static gboolean
+is_offline (CamelDataWrapper *data_wrapper)
+{
+	return parent_class->is_offline (data_wrapper) ||
+		camel_data_wrapper_is_offline (CAMEL_MEDIUM (data_wrapper)->content);
+}
+
 static void
 add_header (CamelMedium *medium, const gchar *header_name,
 	    const void *header_value)
diff --git a/camel/camel-multipart.c b/camel/camel-multipart.c
index 836297a1c..076ec3af7 100644
--- a/camel/camel-multipart.c
+++ b/camel/camel-multipart.c
@@ -44,6 +44,7 @@
 
 #define d(x)
 
+static gboolean              is_offline        (CamelDataWrapper *data_wrapper);
 static void                  add_part          (CamelMultipart *multipart,
 						CamelMimePart *part);
 static void                  add_part_at       (CamelMultipart *multipart,
@@ -94,6 +95,7 @@ camel_multipart_class_init (CamelMultipartClass *camel_multipart_class)
 
 	/* virtual method overload */
 	camel_data_wrapper_class->write_to_stream = write_to_stream;
+	camel_data_wrapper_class->is_offline = is_offline;
 }
 
 static void
@@ -414,6 +416,24 @@ camel_multipart_get_boundary (CamelMultipart *multipart)
 	return CMP_CLASS (multipart)->get_boundary (multipart);
 }
 
+static gboolean
+is_offline (CamelDataWrapper *data_wrapper)
+{
+	CamelMultipart *multipart = CAMEL_MULTIPART (data_wrapper);
+	GList *node;
+	CamelDataWrapper *part;
+
+	if (parent_class->is_offline (data_wrapper))
+		return TRUE;
+	for (node = multipart->parts; node; node = node->next) {
+		part = node->data;
+		if (camel_data_wrapper_is_offline (part))
+			return TRUE;
+	}
+
+	return FALSE;
+}
+
 /* this is MIME specific, doesn't belong here really */
 static int
 write_to_stream (CamelDataWrapper *data_wrapper, CamelStream *stream)