Re: [GNUe-dev] GNUe & wxPython

[Michael Klatt]

At 05:13 PM 8/10/2004 -0500, you wrote:
> What problems are you seeing in GNUe Forms under 2.5? I was able to get most
> of the bugs out of that combination, or at least I thought I did.

It's possible this bug could be specific to the Windows platform.   I 
didn't get this error when using wxPythonGTK2-py2.3-2.5.1.5-1 rpm (built 
from src rpm) on Fedora Core 2.

Here's the output when trying to use gnue-forms with samples/intro/intro.gfd.

C:\GNUe\trunk\gnue-forms\samples\intro>"c:\program 
files\python\scripts\gnue-forms.bat" intro.gfd

C:\GNUe\trunk\gnue-forms\samples\intro>python "c:\Program 
Files\Python\Scripts\gnue-forms" intro.gfd
C:\Program Files\Python\lib\termios.py:7: DeprecationWarning: the TERMIOS 
module is deprecated; please use termios  DeprecationWarning)
DB000: Traceback (most recent call last):
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\uidrivers\wx\widgets\form\wrappers.py", 
line 154, in notebookTabHandler
DB000:     self.uiform._eventHandler('requestPAGE',event.GetSelection(), 
_form=self.form)
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\common\events\EventController.py", line 
111, in dispatchEvent
DB000:     handler(event)
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\GFInstance.py", line 581, in gotoPage
DB000:     self.dispatchEvent('gotoENTRY',object=event._form._currentEntry, 
_form=event._form)
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\common\events\EventController.py", line 
111, in dispatchEvent
DB000:     handler(event)
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\uidrivers\_base\UIdriver.py", 
line 320, in switchFocus
DB000:     self._uiFocusWidget.indexedFocus(object._visibleIndex)
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\uidrivers\wx\widgets\_base.py", 
line 99, in indexedFocus
DB000:     widget = self.widgets[index]
DB000: IndexError: list index out of range
DB000: Traceback (most recent call last):
DB000:   File "c:\Program Files\Python\Scripts\gnue-forms", line 34, in ?
DB000:     client.run ()
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\GFClient.py", line 171, in run
DB000:     instance.activate()
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\GFInstance.py", line 310, in activate
DB000:     self.activateForm('__main__')
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\GFInstance.py", line 330, in 
activateForm
DB000:     self.dispatchEvent ('gotoENTRY', object = form._currentEntry, 
_form = form)
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\common\events\EventController.py", line 
111, in dispatchEvent
DB000:     handler(event)
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\uidrivers\_base\UIdriver.py", 
line 317, in switchFocus
DB000:     self._uiFocusWidget.loseFocus()
DB000:   File "C:\Program 
Files\Python\Lib\site-packages\gnue\forms\uidrivers\wx\widgets\_base.py", 
line 111, in loseFocus
DB000:     widget.SetBackgroundColour(widget.__color)
DB000: AttributeError: 'TextCtrl' object has no attribute '_UIHelper__color'

I decided to try debugging the forms\uidrivers\wx\widgets\_base.py module 
and discovered that if I apply the following changes to _base.py then 
gnue-forms works just find for the intro.gfd.

$ diff -C 2 _base.py _base.py.new
*** _base.py    Tue Aug 10 17:33:58 2004
--- _base.py.new       Tue Aug 10 17:36:59 2004
***************
*** 97,100 ****
--- 97,104 ----

    def indexedFocus(self, index):
+     ### Added by MK
+     if not self.widgets:
+         return
+
      widget = self.widgets[index]
      widget.__focused = True
***************
*** 109,115 ****
      widget = self.widgets[self._uiDriver._uiFocusIndex]
      widget.__focused = False
!     widget.SetBackgroundColour(widget.__color)

    def setValue(self, value, index=0, enabled=1):
      # These must be here or dropdown style controls
      # will get events they shouldn't and break.
--- 113,129 ----
      widget = self.widgets[self._uiDriver._uiFocusIndex]
      widget.__focused = False
!
!     ### Added by MK
!     try:
!         widget.SetBackgroundColour(widget.__color)
!     except:
!         widget.__color = widget.GetBackgroundColour()
!         widget.SetBackgroundColour(widget.__color)

    def setValue(self, value, index=0, enabled=1):
+     ### Added by MK
+     if not self.widgets:
+         return
+
      # These must be here or dropdown style controls
      # will get events they shouldn't and break.
***************
*** 163,166 ****
--- 177,184 ----
        pass  # For label-style entries

+     ### Added by MK
+     except IndexError:
+       pass  # not sure why this works
+
    def setSelectedArea(self, selection1, selection2, index=0):
      try:


I'm not sure if these changes alter the programs behavior, but they make 
the error messages go away. :)

Michael Klatt