Trait druid::text::EditableText

pub trait EditableText: Sized {
    // Required methods
    fn cursor(&self, position: usize) -> Option<StringCursor<'_>>;
    fn edit(&mut self, range: Range<usize>, new: impl Into<String>);
    fn slice(&self, range: Range<usize>) -> Option<Cow<'_, str>>;
    fn len(&self) -> usize;
    fn prev_word_offset(&self, offset: usize) -> Option<usize>;
    fn next_word_offset(&self, offset: usize) -> Option<usize>;
    fn prev_grapheme_offset(&self, offset: usize) -> Option<usize>;
    fn next_grapheme_offset(&self, offset: usize) -> Option<usize>;
    fn prev_codepoint_offset(&self, offset: usize) -> Option<usize>;
    fn next_codepoint_offset(&self, offset: usize) -> Option<usize>;
    fn preceding_line_break(&self, offset: usize) -> usize;
    fn next_line_break(&self, offset: usize) -> usize;
    fn is_empty(&self) -> bool;
    fn from_str(s: &str) -> Self;
}

An EditableText trait.

Required Methods

fn cursor(&self, position: usize) -> Option<StringCursor<'_>>

Create a cursor with a reference to the text and a offset position.

Returns None if the position isn’t a codepoint boundary.

fn edit(&mut self, range: Range<usize>, new: impl Into<String>)

Replace range with new text. Can panic if supplied an invalid range.

fn slice(&self, range: Range<usize>) -> Option<Cow<'_, str>>

Get slice of text at range.

fn len(&self) -> usize

Get length of text (in bytes).

fn prev_word_offset(&self, offset: usize) -> Option<usize>

Get the previous word offset from the given offset, if it exists.

fn next_word_offset(&self, offset: usize) -> Option<usize>

Get the next word offset from the given offset, if it exists.

fn prev_grapheme_offset(&self, offset: usize) -> Option<usize>

Get the next grapheme offset from the given offset, if it exists.

fn next_grapheme_offset(&self, offset: usize) -> Option<usize>

Get the next grapheme offset from the given offset, if it exists.

fn prev_codepoint_offset(&self, offset: usize) -> Option<usize>

Get the previous codepoint offset from the given offset, if it exists.

fn next_codepoint_offset(&self, offset: usize) -> Option<usize>

Get the next codepoint offset from the given offset, if it exists.

fn preceding_line_break(&self, offset: usize) -> usize

Get the preceding line break offset from the given offset

fn next_line_break(&self, offset: usize) -> usize

Get the next line break offset from the given offset

fn is_empty(&self) -> bool

Returns true if this text has 0 length.

fn from_str(s: &str) -> Self

Construct an instance of this type from a &str.

Implementations on Foreign Types

impl EditableText for String

fn cursor<'a>(&self, position: usize) -> Option<StringCursor<'_>>

fn edit(&mut self, range: Range<usize>, new: impl Into<String>)

fn slice(&self, range: Range<usize>) -> Option<Cow<'_, str>>

fn len(&self) -> usize

fn prev_grapheme_offset(&self, from: usize) -> Option<usize>

fn next_grapheme_offset(&self, from: usize) -> Option<usize>

fn prev_codepoint_offset(&self, from: usize) -> Option<usize>

fn next_codepoint_offset(&self, from: usize) -> Option<usize>

fn prev_word_offset(&self, from: usize) -> Option<usize>

fn next_word_offset(&self, from: usize) -> Option<usize>

fn is_empty(&self) -> bool

fn from_str(s: &str) -> Self

fn preceding_line_break(&self, from: usize) -> usize

fn next_line_break(&self, from: usize) -> usize

impl EditableText for Arc<String>

fn cursor(&self, position: usize) -> Option<StringCursor<'_>>

fn edit(&mut self, range: Range<usize>, new: impl Into<String>)

fn slice(&self, range: Range<usize>) -> Option<Cow<'_, str>>

fn len(&self) -> usize

fn prev_word_offset(&self, offset: usize) -> Option<usize>

fn next_word_offset(&self, offset: usize) -> Option<usize>

fn prev_grapheme_offset(&self, offset: usize) -> Option<usize>

fn next_grapheme_offset(&self, offset: usize) -> Option<usize>

fn prev_codepoint_offset(&self, offset: usize) -> Option<usize>

fn next_codepoint_offset(&self, offset: usize) -> Option<usize>

fn preceding_line_break(&self, offset: usize) -> usize

fn next_line_break(&self, offset: usize) -> usize

fn is_empty(&self) -> bool

fn from_str(s: &str) -> Self

Implementors