Cleanup after an STC is closed

wxPython Users
1

Hello,

I am making Yet Another Text Editor, using wx.stc. I have a bunch of
editor windows inside an aui.Notebook, and I want to perform cleanup
when a tab is closed. I can detect a closing tab by hooking to
wx.EVT_AUINOTEBOOK_PAGE_CLOSE,
but it seems that there is no equivalent for the stc itself.

I would expect that handling EVT_CLOSE would do it, but it seems that
it's only fired for frames and dialogs.

Right now I have:

   def OnPageClose(self, event):
       ed = self._nb.GetPage(event.Selection)
       self.windows.remove(ed)
       ed.Close()
       event.Skip()

And in my stc subclass

   def Close(self):
       if self._buffer is not None:
           self.UnhookBuffer(self._buffer)

This works, but feels a bit dirty. I couldn't find any way of
detecting when the editor goes away so I can unhook from my listeners
then. I'm sure I'm missing something, this would surely be a common
thing.

Thanks very much,
Orestis Markou

···

--
orestis@orestis.gr
http://orestis.gr

2

Hello,

···

On Thu, Dec 11, 2008 at 12:59 PM, Orestis Markou orestis@orestis.gr wrote:

Hello,

I am making Yet Another Text Editor, using wx.stc. I have a bunch of

editor windows inside an aui.Notebook, and I want to perform cleanup

when a tab is closed. I can detect a closing tab by hooking to

wx.EVT_AUINOTEBOOK_PAGE_CLOSE,

but it seems that there is no equivalent for the stc itself.

I would expect that handling EVT_CLOSE would do it, but it seems that

it’s only fired for frames and dialogs.

Because you are not really closing anything, an object is being deleted.

EVT_WINDOW_DESTROY should work or override del.

Cody

3

Hm, if I try to access the editor after it's being closed, I get a
DeadObject exception, so I presume that something is destroyed. I
guess overriding __del__ makes sense in a general Python sense.

Thanks, I'll try that!

···

On Thu, Dec 11, 2008 at 7:10 PM, Cody Precord <codyprecord@gmail.com> wrote:

Hello,

On Thu, Dec 11, 2008 at 12:59 PM, Orestis Markou <orestis@orestis.gr> wrote:

Hello,

I am making Yet Another Text Editor, using wx.stc. I have a bunch of
editor windows inside an aui.Notebook, and I want to perform cleanup
when a tab is closed. I can detect a closing tab by hooking to
wx.EVT_AUINOTEBOOK_PAGE_CLOSE,
but it seems that there is no equivalent for the stc itself.

I would expect that handling EVT_CLOSE would do it, but it seems that
it's only fired for frames and dialogs.

Because you are not really closing anything, an object is being deleted.
EVT_WINDOW_DESTROY should work or override __del__.

Cody

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4

That worked very well, thanks!

···

--
orestis@orestis.gr

On 11 Dec 2008, at 19:10, Cody Precord wrote:

Hello,

On Thu, Dec 11, 2008 at 12:59 PM, Orestis Markou > <orestis@orestis.gr> wrote:
Hello,

I am making Yet Another Text Editor, using wx.stc. I have a bunch of
editor windows inside an aui.Notebook, and I want to perform cleanup
when a tab is closed. I can detect a closing tab by hooking to
wx.EVT_AUINOTEBOOK_PAGE_CLOSE,
but it seems that there is no equivalent for the stc itself.

I would expect that handling EVT_CLOSE would do it, but it seems that
it's only fired for frames and dialogs.

Because you are not really closing anything, an object is being deleted.

EVT_WINDOW_DESTROY should work or override __del__.

Cody

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