Re: [matplotlib-devel] error handling cleanup

[Ted D. <ted...@jp...>]

John,
This sounds great!  Let me know if you need any help from us.

FYI: here is the fix for the Qt front end status bar not having an initial 
message (so it doesn't appear until a message is displayed).

In backend_qt.py, add this line to the ctor for NavigationToolbar2QT:

self.window.statusBar.message( " " )

so the ctor looks like this:
     def __init__( self, canvas, window ):
         self.window = window
         self.canvas = canvas

         qt.QToolBar.__init__( self, "Navigator2", window, qt.Qt.DockBottom )
         NavigationToolbar2.__init__( self, canvas )

         # If we don't do this, the status bar is hidden until needed.
         self.window.statusBar.message( " " )

Ted

At 07:40 AM 2/15/2005, John Hunter wrote:

>error_msg and verbose.report_error are banished.  In their place use
>exceptions and warnings.warn.  I ported all existing matplotlib
>frontend and backend code, but please check your respective backends
>and diff them against 0.72 to make sure you agree with what I did.
>
>I left error_msg_gtk, error_msg_wx and friends for internal backend
>use (they aren't imported or used in any other part of mpl code).
>Thus proper (in my view) uses like
>
>
>     agg = self.switch_backends(FigureCanvasAgg)
>     try: agg.print_figure(filename, dpi, facecolor, edgecolor, orientation)
>     except IOError, msg:
>         error_msg_gtk('Failed to save\nError message: %s'%(msg,), self)
>
>are still in the code base.
>
>Hope this removes one source of confusion.  If people think we need to
>layer some more sophisticated error handling on top of this, I'm open.
>But at least we are now starting from a clean slate with exceptions
>used consistently throughout.
>
>JDH
>
>
>
>
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