Short Description: Workspace SimObj List: Optimizations and Cleanup.
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 6.1

Workspace Object List: Performance Announcements, Documented Options 
and Added Comments.

Two performance enhancements:
 (1) Horizontal Scrollbar Geom Updates deferred with a QTimer.
 (2) Account Item conditional selectability managed with an item QSet.

Prepared and documented compile-time options -- SEE DETAILS BELOW.
 (1) TreeView ornamentation (Root Decoration) -- needs to be on.
 (2) Option to OPEN SimObj TreeItem when Accounting Workspace Account 
      graphics item selected -- currently disabled.

// TreeView ornamentation on top level items ("Root Decoration"). 
// Currently (RW 6.1, 1-2011), Root Decoration needs to be shown. The
// root decoration shows the control to open and close the display of 
// child (Account) items.  Without that decoration, the user needs to 
// DOUBLE CLICK to show and hide child items -- AND to see if there are 
// any (when the SimObj treeview is closed).  Note that double-clicking 
// on an item currently shows a dialog for the item (Open Object or Edit 
// Account dialog).
// 
static const bool SHOW_ROOT_DECORATION (true); // should be true; see note.

// Selecting an Account Graphics Item in the Accounting View CAN be used
// to force the Account's containing Object treeview item to be "expanded"
// to show the Account list item (and to show it as selected).  This 
// results in a lot of the Object treeviews to become open, so maybe isn't
// desirable.  The new "Hide Account Items" account item context menu 
// operation maybe helps mitigate that, but still, it's not clear that this
// feature is desirable.
//
static const bool WS_ACCT_SELECTION_OPENS_OBJ_TREE (false);

-----------------------------
Q3GUI/WorkspaceTreeWidget.hpp
Q3GUI/WorkspaceTreeWidget.cpp
-----------------------------

Added:
  QTimer* _updateScrollBarGeomTimer;
  QSet<AcctItem*> _selectEnabledAcctItems;

 public:
   // notifications from child items
   void objItemDeleted (ObjItem*);
   void acctItemDeleted (AcctItem*);
   void acctItemEnableSelect (AcctItem*, bool ena);

 private:
   void schedUpdateScrollBarGeom();
   void cancelUpdateScrollBarGeom();
 private slots:
   void updateScrollBarGeom_timeout();

-------------------
Q3GUI/Workspace.hpp
Q3GUI/Workspace.cpp
-------------------

Minor: simplification of the WorkspaceTreeWidget 'widgetResized' signal.

---------------------------
Q3GUI/WorkspaceListView.hpp
Q3GUI/WorkspaceListView.cpp
---------------------------

Preparation for removal from Build and CVS. (To avoid problems in
our incremental Solaris builds, modules need to be gradually removed).

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