When hovering over an item in the tree views of the Database Structure tab
or DB Schema pane, show a tooltip with the contents of that field.
See issue #139.
Add an option to the preferences dialog (by default disabled) which,
when activated, removes all line breaks from the Schema column in the
Database Structure tab and the DB Schema pane. Especially if there are
many tables this might make things clearer.
In the Database Structure tab of the main window and the DB Schema
pane, show more information in the field nodes of the tree view. This
commit puts the field definition in the Schema column which has been
unsused until now. It also changes the icon of the field row when the
field is a primary key. This hopefully makes the Schema view a bit more
useful, especially in the pane.
Keep all the table and field information in a sqlb::Table object (which
itself is stored in DBBrowserObject) rather than storing field
information in DBBrowserObject and sqlb::Table objects at the same time.
Make it possible to drop database objects (i.e. SQL code) on the tree
view in the Database Structure tab. This is far from being perfect as of
now but enables you to drag and drop entire objects between databases.
Use a custom model for the tree view in the "Database Structure" tab in
the main window, i.e. change from a QTreeWidget to a QTreeView and do
all the item management stuff manually. This might add some code and
complexity but also offers some more flexibility for us.
