Link to issue number:

Partially fixes #3293.

Summary of the issue:

When using f8 (extend selection) or shift+f8 (reduce selection) in Word, the selection changes are not reported.

Description of user facing changes

When using f8 (extend selection) or shift+f8 (reduce selection) in Word, the selection changes will now be reported.
If the selection is extended / reduced at both ends, two consecutive selection update messages are reported, as done for control+a (select all).

Description of development approach

In WordDocument.initOverlayClass, bind script_caret_changeSelection to f8 and shift+f8, as already done for other gestures such as alt+shift+home or alt+shift+pageDown.

Testing strategy:

Manual test of f8 and shift+f8 in Word and Outlook, with and without UIA.
Test made on Windows 10, Word 2016 (Microsoft® Word 2016 MSO (Version 2410 Build 16.0.18129.20158) 32 bits).

Known issues with pull request:

This PR only reports selection change when f8/shift+f8 is pressed.

Though this PR does not fix the following issues:

• "extend selection" mode" enabled or disabled upon first press on F8 or when pressing escape is not reported.
• While in "extend selection mode", pressing left/right arrows reports the first character of the selection, what is unuseful, before reporting the selection change;

Since these issues were pre-existing to this PR, my opinion is that this PR is already an improvement of the "extend selection mode" usage with respect to what was occurring before.

Code Review Checklist:

• Documentation:
  • Change log entry
  • User Documentation
  • Developer / Technical Documentation
  • Context sensitive help for GUI changes
• Testing:
  • Unit tests
  • System (end to end) tests
  • Manual testing
• UX of all users considered:
  • Speech
  • Braille
  • Low Vision
  • Different web browsers
  • Localization in other languages / culture than English
• API is compatible with existing add-ons.
• Security precautions taken.

@coderabbitai summary