Foremost a fix for SmTreeModel

Not working again, but I eventually have to commit the changes. Fixes to
SmTreeModel:

* Fix SmTreeModel::index(). The previous comment was quite valid. I'm
surprised that it worked at all. I have no clue why to return an invalid
QModelIndex if the column isn't 0. Now an index with any valid column
number can be created.

* Fix SmTreeModel::parent(). Again, why shouldn't we create a parent
index with a column other than 0? No idea...

* Fix SmTreeModel::headerData(). Add some sanity checks.

* Fix SmTreeModel::findRecursive(). Well, what is there to say. It never
worked for models with a depth > 1, but obviously it didn't really
matter until now. To make it work I had to change SmTreeItem as well.
SmTreeItem::next() returns the next valid parent/sibling, or 0 if there
isn't one.

There may be some fallout from these changes, but they're yet to be
seen.

Changes to PictureView:
* fix selecting an item according to the new datasbase layout
* same goes for editing items. If an update actually works has to be
checked.

Overall, it's an intermediate commit that should have been a sane series
of commits. Can't be changed now...

1 files changed, 2 insertions, 1 deletions

diff --git a/smtreemodel.h b/smtreemodel.h
index 515f7b3..7037e4c 100644
--- a/smtreemodel.h
+++ b/smtreemodel.h
@@ -37,11 +37,12 @@ class SmTreeModel : public QAbstractItemModel {
 		virtual QVariant data(const QModelIndex &index, int role) const;
 		virtual bool setData(const QModelIndex &index, const QVariant &value, int role);
 		virtual QModelIndex find(const QVariant &value, int column = 0, const QModelIndex &parent = QModelIndex()) const;
-		virtual QModelIndex findRecursive(const QVariant &value, int column = 0, const QModelIndex &parent = QModelIndex()) const;
+        virtual QModelIndex findRecursive(const QVariant &value, int column, const QModelIndex &start) const;
 
 		// root + parent item
 		bool setRoot(SmTreeItem *rootItem);
 		SmTreeItem *root() const { return mRootItem; }
+        QModelIndex rootIndex() const;
 		SmTreeItem *parentItem(const QModelIndex &child) const;
         void reparent(const QModelIndex &idx, const QModelIndex &newParent, bool sorted = false);