tdf#116074: Don't block on sending email interactively

When sending e-mail using a MAPI mail client that doesn't recognize
MAPI_DIALOG_MODELESS flag, and doesn't return from MAPISendMail until
message compose dialog is closed (like MS Outlook 2010 and older),
waiting for the senddoc process blocks UI, which is unexpected and
prevents users from copying stuff from documents to the mail body.

Waiting for senddoc process completion is used for two things:
1. To serialize sending multiple mails (e.g., using mailmerge);
2. To show error in case when it failed.

This patch allows to avoid blocking the UI in case when compose UI is
requested - i.e., user interaction with the mail client is expected,
and serialization is not required. In this case, the senddoc process
will show the error message itself -> no need for main application to
wait for its return. The error message now includes actual error code.

To avoid cases when closing main program would remove temporary
attachment files before they were used by mail client, they are
copied to base temporary directory (instead of default session
temporary directory that gets deleted upon program shutdown).
senddoc cleans up its temporaries itself.

The temporary attachment files are copied to files with ASCII-only
filenames, and their original filenames are passed to mail clients
using MAPI. This allows to avoid cases when the filenames contain
characters outside of current Windows codepage, and the mail client
does not support Unicode MAPI, thus receiving wrong filename and
erroring out from the send.

Change-Id: I4a517bd7a797e76e4c0b7ea48bb1a7b652741a81
Reviewed-on: https://gerrit.libreoffice.org/50826
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/sfx2/strings.hrc b/include/sfx2/strings.hrc
index 4e8346b209a5..e5532815f63e 100644
--- a/include/sfx2/strings.hrc
+++ b/include/sfx2/strings.hrc
@@ -234,6 +234,9 @@
 #define STR_PRINT_NEWORISIZE                    NC_("STR_PRINT_NEWORISIZE", "The page size and orientation have been modified.\nWould you like to save the new settings in the\nactive document?")
 #define STR_CANT_CLOSE                          NC_("STR_CANT_CLOSE", "The document cannot be closed because a\n print job is being carried out.")
 #define STR_ERROR_SEND_MAIL                     NC_("STR_ERROR_SEND_MAIL", "An error occurred in sending the message. Possible errors could be a missing user account or a defective setup.\nPlease check the %PRODUCTNAME settings or your e-mail program settings.")
+// Error codes look like "MAPI_E_FAILURE" or "1234"
+#define STR_ERROR_SEND_MAIL_CODE                NC_("STR_ERROR_SEND_MAIL_CODE", "An error occurred in sending the message. Possible errors could be a missing user account or a defective setup.\n\nError code is $1")
+#define STR_ERROR_SEND_MAIL_HEADER              NC_("STR_ERROR_SEND_MAIL_HEADER", "Error sending mail")
 #define STR_QUERY_OPENASTEMPLATE                NC_("STR_QUERY_OPENASTEMPLATE", "This document cannot be edited, possibly due to missing access rights. Do you want to edit a copy of the document?")
 #define STR_QUERY_OPENASTEMPLATE_ALLOW_IGNORE   NC_("STR_QUERY_OPENASTEMPLATE_ALLOW_IGNORE", "This document cannot be edited, because it is locked in another session. Do you want to edit a copy of the document?\n\nYou can also try to ignore the lock and open the file for editing.")
 #define STR_QUERY_OPENASTEMPLATE_OPENCOPY_BTN   NC_("STR_QUERY_OPENASTEMPLATE_OPENCOPY_BTN", "Open ~Copy")