4-04-2011

Short Description: Qt4 Port of the Plot Marker Manager Dialog / Q3ListView
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 6.1

... including internal behavioral fixes and fixes to integration with the
client dialog (the Plot Dialog).

SEE SCREENSHOT: 
  http://cadswes2.colorado.edu/~philw/2011/Qt4Port/April/MarkerMgrDlg/

-------------------------
Q3GUI/MarkerMgrDlg.hpp
Q3GUI/MarkerMgrDlg.cpp
Q3GUI/MarkerMgrWidgets.ui
-------------------------

Ported widget:
  Q3ListView --> QTreeWidget: _listView
 
Added QTreeWidget Item subclass:
  MarkerMgrDlg::TwItem : public QTreeWidgetItem
  ... needed for proper sorting by Maker Key (number).

Cleanup of distinction between initialization and updating.  In particular
'rebuildList' was added, broken out from 'initWidgets'.

Cleanup of selection and scroll behaviors after adding markers. Also,
more reliable coding of button-enabling -- not dependent on side effects
from other widget change handling, with new method: sensitizeWidgets().

------------------
Q3GUI/SlotPlot.cpp
------------------

In method SlotPlot::loadPlotInfo(), if the Marker Manager dialog for this
SlotPlot is shown, then update that dialog with the list of Markers from
the newly loaded PlotInfo. (This is done simply by calling MarkerMgrDlg::
setPlot (SlotPlot*).

In method SlotPlot::spawnMarkerMgrDlg() -- similar enhancement (see above)
in case the dialog is shown again from the Plot Dialog (i.e. if the Marker
Manager dialog is already shown).

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