Suggest predicate-based formatter in [FilteringTextInputFormatter] docs for whole string matching #107848
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string predicates in its documentation. - Fixes flutter#78100
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goderbauer
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Jul 26, 2022
| /// preserve the existing [TextEditingValue.selection] to values it would now | ||
| /// fall at with the removed characters. | ||
| /// A [FilteringTextInputFormatter] also tries to preserve the existing | ||
| /// [TextEditingValue.selection] and [TextEditingValue.composing], and adjusts |
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nit: maybe add a "region" after "[TextEditingValue.composing]" to make this read better?
| /// them accordingly if text within either of these ranges is replaced. | ||
| /// | ||
| /// This formatter is typically used to match potentially recurring [Pattern]s | ||
| /// in the new [TextEditingValue], and it never completely rejects the new |
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maybe break this sentence up a little. It's super long with the two "and"s.
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@goderbauer rephrased some of the new docs could you take a look again? |
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Jul 27, 2022
| /// [TextEditingValue] and falls back to the current [TextEditingValue] when the | ||
| /// given [filterPattern] fails to match. Consider using a different | ||
| /// [TextInputFormatter] such as: | ||
| /// `TextInputFormatter.withFunction((oldValue, newValue) => regExp.hasMatch(newValue.text) ? newValue : oldValue)`. |
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could you wrap this in a ```dart section to get nicer code formatting in docs?
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| /// fall at with the removed characters. | ||
| /// A [FilteringTextInputFormatter] also tries to preserve the existing | ||
| /// [TextEditingValue.selection] and the [TextEditingValue.composing] region, | ||
| /// adjusting them accordingly if text within either of these ranges is replaced. |
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Nit: Is it also possible that that text before these ranges is replaced and they need to be updated? Not sure but just being pedantic.
| /// for accepting/rejecting new input based on a predicate on the full string. | ||
| /// As an example, [FilteringTextInputFormatter] typically shouldn't be used | ||
| /// with [RegExp]s that contain positional matchers (`^` or `$`) since these | ||
| /// patterns are usually meant for matching the whole string. |
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This is much more clear to me and I feel like I know what to do in both situations thanks to the examples 👍
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…tter] docs for whole string matching (flutter/flutter#107848)
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…tter] docs for whole string matching (flutter/flutter#107848)
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…cs for whole string matching (flutter#107848)
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Explains when not to use a
FilteringTextInputFormatter.Pre-launch Checklist
///).If you need help, consider asking for advice on the #hackers-new channel on Discord.