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Fix invalid selection handling in text plugins #19899
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The Windows, Linux, and GLFW embeddings (which all share a common code ancestry) pass TextInput.setEditingState selection base and extents straight through to the shared text model class. The model expects those values to be valid, but the framework sends -1/-1 for "invalid" selections, which happen for some empty text cases (e.g., TextFieldController.clear()). This translates those invalid selection values to an empty selection at the start of the string, as expected by the model. Fixes flutter/flutter#59140
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It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption to this rule, contact Hixie on the #hackers channel in Chat. Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. |
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@robert-ancell @chinmaygarde ping on this review. |
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Description
The Windows, Linux, and GLFW embeddings (which all share a common code
ancestry) pass TextInput.setEditingState selection base and extents
straight through to the shared text model class. The model expects those
values to be valid, but the framework sends -1/-1 for "invalid"
selections, which happen for some empty text cases (e.g.,
TextFieldController.clear()).
This translates those invalid selection values to an empty selection at
the start of the string, as expected by the model.
Related Issues
Fixes flutter/flutter#59140
Tests
I added the following tests: None; test frameworks don't yet exist for this layer of the desktop embeddings.
Checklist
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[x]). This will ensure a smooth and quick review process.Breaking Change
Did any tests fail when you ran them? Please read handling breaking changes.