- don't show crash reporter multiple times for the "same" exception
- at least until the user restart the program (there is no persistence)
- this is a ~replacement for the removed "Never show crash reporter" option
- in case there e.g. a thread with timer spamming an exception erroneously,
this ensures we only offer to send the crash report once (per process lifecycle)
When clicking the "close_button" button (labelled "Not Now"), the whole app state got bugged:
none of the existing windows (e.g. ElectrumWindow) could get focus anymore.
The signature of PushButton.clicked is:
`void QAbstractButton::clicked(bool checked = false)`
https://doc.qt.io/qt-6/qabstractbutton.html#clicked
and pyqt is probably doing some polymorphism, dynamically deciding if the qt slot wants the "checked" arg or not.
The extremely weird part is that the bug is triggered on clicking "close_button" (probably pyqt is passing "checked" to self.close)
but instead of the current commit, the following diff, touching a completely different button, would also "fix" the issue:
```
diff --git a/electrum/gui/qt/exception_window.py b/electrum/gui/qt/exception_window.py
index eceab89de6..e0162e5827 100644
--- a/electrum/gui/qt/exception_window.py
+++ b/electrum/gui/qt/exception_window.py
@@ -67,7 +67,7 @@ class Exception_Window(BaseCrashReporter, QWidget, MessageBoxMixin, Logger):
self._report_contents_dlg = None # type: Optional[ReportContentsDialog]
collapse_info = QPushButton(_("Show report contents"))
- collapse_info.clicked.connect(self.show_report_contents_dlg)
+ collapse_info.clicked.connect(lambda: self.show_report_contents_dlg())
main_box.addWidget(collapse_info)
```
No idea why.
- the msg_box did not allow neither vertical nor horizontal scrolling
- long lines were not word-wrapped, but were effectively truncated
- long reports could only be inspected if the user somehow selected
the full text and pasted it into a text editor
- new dialog allows vertical and horizontal scrolling
- we could maybe word-wrap instead of horizontal scrolling,
but this is already a strict improvement for long reports
If some dialogs are open while an exception was raised the input of
Exception_Window is blocked and the user cannot click the button to
submit the issue report. Only if the other dialog is closed
Exception_Window starts responding. By setting the modality of
`Exception_Windows` to `ApplicationModal` the `Exception_Window` will
get the 'highest priority' and accepts input even if other dialogs are
open.
A new config API is introduced, and ~all of the codebase is adapted to it.
The old API is kept but mainly only for dynamic usage where its extra flexibility is needed.
Using examples, the old config API looked this:
```
>>> config.get("request_expiry", 86400)
604800
>>> config.set_key("request_expiry", 86400)
>>>
```
The new config API instead:
```
>>> config.WALLET_PAYREQ_EXPIRY_SECONDS
604800
>>> config.WALLET_PAYREQ_EXPIRY_SECONDS = 86400
>>>
```
The old API operated on arbitrary string keys, the new one uses
a static ~enum-like list of variables.
With the new API:
- there is a single centralised list of config variables, as opposed to
these being scattered all over
- no more duplication of default values (in the getters)
- there is now some (minimal for now) type-validation/conversion for
the config values
closes https://github.com/spesmilo/electrum/pull/5640
closes https://github.com/spesmilo/electrum/pull/5649
Note: there is yet a third API added here, for certain niche/abstract use-cases,
where we need a reference to the config variable itself.
It should only be used when needed:
```
>>> var = config.cv.WALLET_PAYREQ_EXPIRY_SECONDS
>>> var
<ConfigVarWithConfig key='request_expiry'>
>>> var.get()
604800
>>> var.set(3600)
>>> var.get_default_value()
86400
>>> var.is_set()
True
>>> var.is_modifiable()
True
```
If the user had `config.get("show_crash_reporter")==False`, they would
never get to see excs collected via `send_exception_to_crash_reporter(exc)`.
E.g.:
```
E | gui.qt.ElectrumGui | error loading wallet (or creating window for it)
Traceback (most recent call last):
File "/opt/electrum/electrum/gui/qt/__init__.py", line 433, in main
if not self.start_new_window(path, self.config.get('url'), app_is_starting=True):
File "/opt/electrum/electrum/gui/qt/__init__.py", line 307, in wrapper
return func(self, *args, **kwargs)
File "/opt/electrum/electrum/gui/qt/__init__.py", line 332, in start_new_window
wallet = self._start_wizard_to_select_or_create_wallet(path)
File "/opt/electrum/electrum/gui/qt/__init__.py", line 377, in _start_wizard_to_select_or_create_wallet
db = WalletDB(storage.read(), manual_upgrades=False)
File "/opt/electrum/electrum/wallet_db.py", line 73, in __init__
self.load_data(raw)
File "/opt/electrum/electrum/wallet_db.py", line 104, in load_data
self._after_upgrade_tasks()
File "/opt/electrum/electrum/wallet_db.py", line 202, in _after_upgrade_tasks
self._load_transactions()
File "/opt/electrum/electrum/util.py", line 439, in <lambda>
return lambda *args, **kw_args: do_profile(args, kw_args)
File "/opt/electrum/electrum/util.py", line 435, in do_profile
o = func(*args, **kw_args)
File "/opt/electrum/electrum/wallet_db.py", line 1310, in _load_transactions
self.data = StoredDict(self.data, self, [])
File "/opt/electrum/electrum/json_db.py", line 79, in __init__
self.__setitem__(k, v)
File "/opt/electrum/electrum/json_db.py", line 44, in wrapper
return func(self, *args, **kwargs)
File "/opt/electrum/electrum/json_db.py", line 97, in __setitem__
v = self.db._convert_dict(self.path, key, v)
File "/opt/electrum/electrum/wallet_db.py", line 1361, in _convert_dict
v = dict((k, SwapData(**x)) for k, x in v.items())
```
Previously if there was a chain of exceptions, we were only
sending the traceback for the final exception.
E.g.
try:
raise ExcOne("asdasd")
except ExcOne() as e:
raise ExcTwo("qweqwe") from e
^ we would lose all info about ExcOne, including potentially many lines of trace
related: https://github.com/spesmilo/electrum/issues/7390
```
20210706T091826.513398Z | ERROR | __main__ | daemon.run_gui errored
Traceback (most recent call last):
File "run_electrum", line 407, in handle_cmd
File "electrum\daemon.py", line 584, in run_gui
File "electrum\gui\qt\__init__.py", line 414, in main
File "electrum\gui\qt\__init__.py", line 291, in wrapper
File "electrum\gui\qt\__init__.py", line 316, in start_new_window
File "electrum\gui\qt\__init__.py", line 361, in _start_wizard_to_select_or_create_wallet
File "electrum\wallet_db.py", line 73, in __init__
File "electrum\wallet_db.py", line 106, in load_data
File "electrum\util.py", line 412, in <lambda>
File "electrum\util.py", line 408, in do_profile
File "electrum\wallet_db.py", line 175, in upgrade
File "electrum\wallet_db.py", line 540, in _convert_version_24
ValueError: too many values to unpack (expected 2)
```
related #4905
related Electron-Cash/Electron-Cash@6a3d76b0ab
conceptually did not really make sense that the Exception_Hook kept a reference
to an ~arbitrary main window (preventing gc)
