Implement MappingTreeWidget

This is a rather large commit. It implements MappingTreeWidget using
MappingTreeModel unsurprisingly this uncovered some exciting bugs.

Fixes the following bugs in MappingTreeModel:
* use insertRows() and removeRows() when addings children, because
dataChanged() won't do it.
* don't use a prepared QSqlQuery when fetching children recursively.
This won't work because the query is still active when we invoke
ourselves again. Put the query on the stack instead
* Keep the model sorted.

Also add an entry for a MappingTreeEditor to the File-Menu.

1 files changed, 1 insertions, 1 deletions

diff --git a/mappingtreemodel.h b/mappingtreemodel.h
index a18ce57..451ab83 100644
--- a/mappingtreemodel.h
+++ b/mappingtreemodel.h
@@ -52,10 +52,10 @@ class MappingTreeModel : public SmTreeModel {
         };
         void getMappingTypes();
         void getChildrenRecursive(SmTreeItem *item);
+        int lowerBound(SmTreeItem *item, const QVariant &value, int column = 0) const;
         QSqlDatabase mDb;
         QSqlQuery *mTypesQ;
         QSqlQuery *mTypeParentsQ;
-        QSqlQuery *mChildrenQ;
         QSqlQuery *mUpdateTypeQ;
         QSqlQuery *mUpdateChildQ;
         QSqlQuery *mAddMappingTypeQ;