Struct fidl_fuchsia_ui_input::TextSelection

pub struct TextSelection {
    pub base: i64,
    pub extent: i64,
    pub affinity: TextAffinity,
}

A range of text that represents a selection. Although strings in FIDL’s wire format are UTF-8 encoded, these indices are measured in UTF-16 code units for legacy reasons. These text input APIs will eventually be replaced by fuchsia.ui.text, which uses code points instead.

Text selection is always directional. Direction should be determined by comparing base and extent.

Fields

base: i64

The offset at which the selection originates, as measured in UTF-16 code units.

Might be larger than, smaller than, or equal to extent.

extent: i64

The offset at which the selection terminates, as measured in UTF-16 code units.

When the user uses the arrow keys to adjust the selection, this is the value that changes. Similarly, if the current theme paints a caret on one side of the selection, this is the location at which to paint the caret.

Might be larger than, smaller than, or equal to base.

affinity: TextAffinity

If the text range is collapsed and has more than one visual location (e.g., occurs at a line break), which of the two locations to use when painting the caret.

Trait Implementations

impl Autonull for TextSelection

fn naturally_nullable(_context: &Context) -> bool

Returns true if the type is naturally able to be nullable.

impl Clone for TextSelection

fn clone(&self) -> TextSelection

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TextSelection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Decodable for TextSelection

fn new_empty() -> Self

Creates a new value of this type with an “empty” representation.

fn decode(&mut self, decoder: &mut Decoder<'_>, offset: usize) -> Result<()>

Decodes an object of this type from the decoder’s buffers into self. Callers must ensure that offset is a multiple of Layout::inline_align, and that decoder.buf has room for reading Layout::inline_size bytes at offset.

impl Encodable for TextSelection

fn encode( &mut self, encoder: &mut Encoder<'_, '_>, offset: usize, recursion_depth: usize ) -> Result<()>

Encode the object into the buffer. Any handles stored in the object are swapped for Handle::INVALID. Callers must ensure that offset is a multiple of Layout::inline_align, and that encoder.buf has room for writing Layout::inline_size bytes at offset.

impl Hash for TextSelection

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Layout for TextSelection

fn inline_align(context: &Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(context: &Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for the type’s alignment. Must be a multiple of inline_align.

fn supports_simple_copy() -> boolwhere Self: Sized,

Returns true iff the type can be encoded or decoded via simple copy.

impl Ord for TextSelection

fn cmp(&self, other: &TextSelection) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<TextSelection> for TextSelection

fn eq(&self, other: &TextSelection) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<TextSelection> for TextSelection

fn partial_cmp(&self, other: &TextSelection) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for TextSelection

impl Eq for TextSelection

impl Persistable for TextSelection

impl StructuralEq for TextSelection

impl StructuralPartialEq for TextSelection

impl TopLevel for TextSelection