Application Closed even when Canceling in Confirmation Dialog about hakuneko HOT 2 CLOSED

This issue seems to be so simple, but in fact it is quite troublesome to solve for the current versions of electron for the following reasons:

• the bundled chromium browser does not allow to call confirm() within the onbeforeunload event
• trying to use the dialog provided by electron did also not work since this seems not to be shown modal and the application will just quit ignoring the dialog
• showing the dialog outside of the render process will work, but then the web-application has no control over the decision when to show a confirmation and when not

from hakuneko.

The implementation has been changed and the confirm() method has been replaced to call a synchronous confirmation dialog in the render thread instead of the chromium confirmation dialog.

However, the window still closes even when cancel the confirmation dialog (except when the develper console is open, then it works as expected)

This seems to be a bug in electron itself: electron/electron#9966

from hakuneko.