Struct 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 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<(), Error>

Formats the value using the given formatter.

impl<D> Decode<TextSelection, D> for TextSelection

where D: ResourceDialect,

fn new_empty() -> TextSelection

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl<D> Encode<TextSelection, D> for &TextSelection

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl Hash for TextSelection

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

where __H: Hasher,

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 Ord for TextSelection

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for TextSelection

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd 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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl TypeMarker for TextSelection

type Owned = TextSelection

The owned Rust type which this FIDL type decodes into.

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 alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for TextSelection

type Borrowed<'a> = &'a TextSelection

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<TextSelection as TypeMarker>::Owned, ) -> <TextSelection as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Copy for TextSelection

impl Eq for TextSelection

impl Persistable for TextSelection

impl StructuralPartialEq for TextSelection