EPUB export: allow setting custom metadata explicitly

If not set, fall back to the existing auto-find. The testcase now
asserts that the priority is:

- api
- if that is not set, then xmp
- if that is not set, then doc

(And at the end libepubgen itself has some defaults as well.)

Change-Id: Ie8fc646b81c4a287690fd2eeed43f4786b7938bf
Reviewed-on: https://gerrit.libreoffice.org/45552
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/writerperfect/source/writer/EPUBExportDialog.cxx b/writerperfect/source/writer/EPUBExportDialog.cxx
index 5c0eb9d1e930..da42954a5d02 100644
--- a/writerperfect/source/writer/EPUBExportDialog.cxx
+++ b/writerperfect/source/writer/EPUBExportDialog.cxx
@@ -125,7 +125,7 @@ IMPL_LINK_NOARG(EPUBExportDialog, CoverClickHdl, Button *, void)
 IMPL_LINK_NOARG(EPUBExportDialog, OKClickHdl, Button *, void)
 {
     if (!m_pCoverPath->GetText().isEmpty())
-        mrFilterData["EPUBCoverImage"] <<= m_pCoverPath->GetText();
+        mrFilterData["RVNGCoverImage"] <<= m_pCoverPath->GetText();
 
     EndDialog(RET_OK);
 }