The most obvious way is to use try...except blocks.
if vr_splitter:
vr_splitter.deleteLater()
would become:
try:
vr_splitter.deleteLater()
except:
pass
Presumably this would not prevent unhooking the vr object from Leo's event
syste,
On Saturday, July 20, 2024 at 11:50:44 AM UTC-4 Edward K. Ream wrote:
> On Sat, Jul 20, 2024 at 9:36 AM Jacob Peck wrote:
>
> > can't you [do something general :-)]
>
> I usually approach tricky tasks by writing specific code first.
>
> Here is a prototype undoer for the "quadrants" layout. It's in a separate
> node for prototyping:
>
> h = c.hash()
> pc = g.app.pluginsController
> gui = g.app.gui
> vr_splitter = gui.find_widget_by_name(c, 'vr-body-splitter')
> vr3_splitter = gui.find_widget_by_name(c, 'vr3-body-splitter')
> body_frame = gui.find_widget_by_name(c, 'bodyFrame')
> parent = (
> vr_splitter.parent() if vr_splitter
> else vr3_splitter.parent() if vr3_splitter
> else None
> )
> if vr_splitter:
> vr_splitter.deleteLater()
> if vr3_splitter:
> vr3_splitter.deleteLater()
> if parent:
> parent.addWidget(body_frame)
> parent.setSizes([100_000] * len(parent.sizes()))
>
> Notice that there may be *two* body splitters, now *each with its own
> separate name*.
>
> This works, as far as the gui goes, but deleting the splitters causes
> repeated crashes both the VR and VR3 plugins:
>
> Traceback (most recent call last):
> File "C:\Repos\leo-editor\leo\core\leoPlugins.py", line 348, in
> callTagHandler
> result = handler(tag, keywords)
> File "C:\Repos\leo-editor\leo\plugins\viewrendered.py", line 363, in
> onClose
> vr.deleteLater()
> RuntimeError: wrapped C/C++ object of type ViewRenderedController has been
> deleted
>
> Traceback (most recent call last):
> File "C:\Repos\leo-editor\leo\core\leoPlugins.py", line 348, in
> callTagHandler
> result = handler(tag, keywords)
> ^^^^^^^^^^^^^^^^^^^^^^
> File "C:\Repos\leo-editor\leo\plugins\viewrendered3.py", line 1475, in
> onClose
> vr3.deleteLater()
> RuntimeError: wrapped C/C++ object of type ViewRenderedController3 has
> been deleted
> ...
>
> These crashes aren't too surprising, but fixing them is another matter :-)
>
> *Summary*
>
> My usual method is to generalize *after* I know all the details for a
> *particular* task. YMMV.
>
> Edward
>
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