Delayed loading of IMAP message parts.

	* camel-types.h: typedef CamelMessageInfo and
	CamelMessageContentInfo here

	* camel-folder-summary.h: Add a "size" field to
	CamelMessageContentInfo.

	* camel-folder-summary.c (camel_folder_summary_content_info_new,
	camel_folder_summary_content_info_free): Renamed and made
	non-static for providers that construct their own content info.
	(content_info_load, content_info_save): load/save size

	* camel-data-wrapper.c (camel_data_wrapper_is_offline): New
	function to return if a data wrapper's contents are "offline". (So
	that, for example, we don't make thumbnails of images that haven't
	been loaded off the IMAP server yet.) Defaults to FALSE.

	* providers/imap/camel-imap-folder.c (camel_imap_folder_selected):
	Fix a bug in re-selecting a folder when messages have been
	expunged from it by another client in the meantime.
	(imap_get_message): Rewrite. If the message is larger than a
	certain size, just create a skeleton message containing
	CamelImapWrappers that will read parts as needed. This way, large
	attachments only need to be downloaded if the user looks at them,
	and multipart/alternative alternatives that aren't used will never
	be downloaded at all.
	(imap_update_summary): Rewrite this a bunch too to make the
	parsing more robust.

	* providers/imap/camel-imap-summary.c
	(CAMEL_IMAP_SUMMARY_VERSION): bump.
	(camel_imap_summary_new): Set build_content to TRUE.
	(content_info_load, content_info_save): Only save/load the content
	for messages that have it. (The content info gets created as a
	side effect of imap_get_message.)

	* providers/imap/camel-imap-utils.c (imap_parse_body): New routine
	(and helpers) to parse an IMAP 'body' FETCH response and fill in a
	CamelMessageContentInfo from it.

	* providers/imap/Makefile.am (libcamelimap_la_SOURCES,
	libcamelimap_la_HEADERS): add camel-imap-wrapper.

svn path=/trunk/; revision=7557

1 files changed, 8 insertions, 4 deletions

diff --git a/camel/camel-folder-summary.h b/camel/camel-folder-summary.h
index 989268c187..4d07951d4b 100644
--- a/camel/camel-folder-summary.h
+++ b/camel/camel-folder-summary.h
@@ -37,7 +37,7 @@ typedef struct _CamelFolderSummaryClass CamelFolderSummaryClass;
 
 /* A tree of message content info structures
    describe the content structure of the message (if it has any) */
-typedef struct _CamelMessageContentInfo {
+struct _CamelMessageContentInfo {
 	struct _CamelMessageContentInfo *next;
 
 	struct _CamelMessageContentInfo *childs;
@@ -47,7 +47,8 @@ typedef struct _CamelMessageContentInfo {
 	char *id;
 	char *description;
 	char *encoding;
-} CamelMessageContentInfo;
+	guint32 size;
+};
 
 /* system flag bits */
 enum _CamelMessageFlags {
@@ -107,7 +108,7 @@ enum {
 #endif
 
 /* information about a given object */
-typedef struct {
+struct _CamelMessageInfo {
 	/* public fields */
 #ifdef DOESTRV
 	struct _EStrv *strings;		/* all strings packed into a single compact array */
@@ -134,7 +135,7 @@ typedef struct {
 
 	/* tree of content description - NULL if it is not available */
 	CamelMessageContentInfo *content;
-} CamelMessageInfo;
+};
 
 enum _CamelFolderSummaryFlags {
 	CAMEL_SUMMARY_DIRTY = 1<<0,
@@ -232,6 +233,9 @@ CamelMessageInfo *camel_folder_summary_info_new_from_message(CamelFolderSummary
 void camel_folder_summary_info_ref(CamelFolderSummary *, CamelMessageInfo *);
 void camel_folder_summary_info_free(CamelFolderSummary *, CamelMessageInfo *);
 
+CamelMessageContentInfo *camel_folder_summary_content_info_new(CamelFolderSummary *s);
+void camel_folder_summary_content_info_free(CamelFolderSummary *s, CamelMessageContentInfo *ci);
+
 /* removes a summary item, doesn't fix content offsets */
 void camel_folder_summary_remove(CamelFolderSummary *s, CamelMessageInfo *info);
 void camel_folder_summary_remove_uid(CamelFolderSummary *s, const char *uid);