[aaltat]

Summary

Adds Blur selector, the counterpart of Focus, for pages that run validation or formatting only after a field loses focus.

Blur (Browser/keywords/interaction.py)
  presenter_mode(selector)
  rpc Blur(Request.ElementSelector)
    interaction.blur
      findLocator(selector, strict)
      locator.blur()

Fill Text    id=email    not-an-email
Blur    id=email
Get Text    css=.validation-error    ==    Please enter a valid email address

• Why a keyword: the need is generally useful, though it comes up rarely. It adds no new capability. Contrary to the issue, Evaluate JavaScript selector (e) => e.blur() already goes through findLocator with strict mode, so the case for Blur is that users should not need JavaScript for this.
• No timeout argument: same as Focus; element interaction keywords use the library timeout.
• Required selector: Blur css=:focus covers the focused element in the main frame, outside shadow DOM; the docstring lists the limits.
• Element without focus: the keyword passes and fires no blur event, as native blur() does. This is documented in the docstring.

Fixes #5102

Evidence

• Before: Blur does not exist.
  After: inv atest --suite focus: 8 tests, 8 passed. Six are new, in atest/test/02_Content_Keywords/focus.robot:

Blur Removes Focus From Element              Focus, Blur            -> contains defocused
Blur Fires Blur Event                        Focus, Blur            -> event log has blur
Blur On Element Without Focus Does Nothing   Blur                   -> event log has no blur
Blur On Element Without Focus Keeps Focus On Other Element  Focus other, Blur -> other stays focused
Blur Element Which Has Focus                 Focus, Blur css=:focus -> contains defocused
Blur With Strict                             Blur //input           -> strict mode violation; non-strict blurs first match

inv utest (1542 passed, 2 skipped), inv utest-node (328 passed) and inv lint also pass locally. The full acceptance suite was not run locally.

Merge Danger

Door: two-way until released, then one-way

After release, removing or renaming the keyword needs a deprecation cycle and breaks user translations.

Blast Radius: additive

Existing keywords do not change. Each translation gains one untranslated keyword.

🤖 Generated with Claude Code

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud