Fix Mappings in PictureViewer2

Another fix for the new MappingTreeModel database layout: Make the
mappings display correctly when showing an archived picture.

For performance reasons I had to make PicFilesModel global and put it
into a separate file.

Also clean up MappingTreeModel: remove comments and unused functions.

1 files changed, 4 insertions, 2 deletions

diff --git a/shemov.pro b/shemov.pro
index 846e533..adf6f6c 100644
--- a/shemov.pro
+++ b/shemov.pro
@@ -39,7 +39,8 @@ SOURCES = main.cpp \
     mappingtreewidget.cpp \
     newpicsdialog.cpp \
     pictureswidget.cpp \
-    pictureviewer2.cpp
+    pictureviewer2.cpp \
+    picfilesmodel.cpp
 HEADERS = \
     filesystemdirproxy.h \
     filesystemwidget.h \
@@ -74,6 +75,7 @@ HEADERS = \
     mappingtreewidget.h \
     newpicsdialog.h \
     pictureswidget.h \
-    pictureviewer2.h
+    pictureviewer2.h \
+    picfilesmodel.h
 LIBS += -lmagic -lXfixes -lX11
 RESOURCES = shemov.qrc