Add thread menu item "create Filter from message"

[RealRaven2000]

Since Thunderbird 115 the context menu item "quickFilters: create filter from message" is missing. It would be helpful to get it back for direct access of this feature (rather than going through the toolbar menu).

[RealRaven2000]

Here is a first version that supports creating filters from the context menu. At first it was a little tricky as it generated multiple assistant dialogs (if multiple windows are open), but I think I managed to filter out the wrong messages.

quickFilters-wx-6.1pre15.zip

To install, download the zip file and drag into Thunderbird Add-ons Manager.

[RealRaven2000]

There were quite a few problems with retrieving the currently selected messages (using legacy methods), So I decided to rewrite the part of the code that determines these mails so that it is based on the API. Took quite a few tries but I think I managed this. So the selected mails are either one email that is right-clicked outside of the currently viewed mails (see picture below) or all currently viewed mails if the user clicks within those highlighted emails:

Here is the latest prerelease: quickFilters-wx-6.2pre64.zip

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To test the version above, download the zip file, drag the file into Thunderbird Add-ons Manager, do not extract contents or it won't install.

[RealRaven2000]

implemented in 6.2 - Published 13/08/2023