Enum gtk4::InputPurpose

source ·
#[non_exhaustive]
pub enum InputPurpose {
    FreeForm,
    Alpha,
    Digits,
    Number,
    Phone,
    Url,
    Email,
    Name,
    Password,
    Pin,
    Terminal,
    // some variants omitted
}
Expand description

Describes primary purpose of the input widget.

This information is useful for on-screen keyboards and similar input methods to decide which keys should be presented to the user.

Note that the purpose is not meant to impose a totally strict rule about allowed characters, and does not replace input validation. It is fine for an on-screen keyboard to let the user override the character set restriction that is expressed by the purpose. The application is expected to validate the entry contents, even if it specified a purpose.

The difference between Digits and Number is that the former accepts only digits while the latter also some punctuation (like commas or points, plus, minus) and “e” or “E” as in 3.14E+000.

This enumeration may be extended in the future; input methods should interpret unknown values as “free form”.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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FreeForm

Allow any character

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Alpha

Allow only alphabetic characters

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Digits

Allow only digits

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Number

Edited field expects numbers

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Phone

Edited field expects phone number

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Url

Edited field expects URL

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Email

Edited field expects email address

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Name

Edited field expects the name of a person

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Password

Like FreeForm, but characters are hidden

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Pin

Like Digits, but characters are hidden

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Terminal

Allow any character, in addition to control codes

Trait Implementations§

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Auto Trait Implementations§

Blanket Implementations§

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