Trait TextBuffer 

pub trait TextBuffer {
    // Required methods
    fn is_mutable(&self) -> bool;
    fn as_str(&self) -> &str;
    fn insert_text(&mut self, text: &str, char_index: usize) -> usize;
    fn delete_char_range(&mut self, char_range: Range<usize>);

    // Provided methods
    fn char_range(&self, char_range: Range<usize>) -> &str { ... }
    fn byte_index_from_char_index(&self, char_index: usize) -> usize { ... }
    fn clear(&mut self) { ... }
    fn replace(&mut self, text: &str) { ... }
    fn take(&mut self) -> String { ... }
}

Trait constraining what types crate::TextEdit may use as an underlying buffer.

Most likely you will use a String which implements TextBuffer.

Required Methods

fn is_mutable(&self) -> bool

Can this text be edited?

fn as_str(&self) -> &str

Returns this buffer as a str.

fn insert_text(&mut self, text: &str, char_index: usize) -> usize

Inserts text text into this buffer at character index char_index.

Notes

char_index is a character index, not a byte index.

Return

Returns how many characters were successfully inserted

fn delete_char_range(&mut self, char_range: Range<usize>)

Deletes a range of text char_range from this buffer.

Notes

char_range is a character range, not a byte range.

Provided Methods

fn char_range(&self, char_range: Range<usize>) -> &str

Reads the given character range.

fn byte_index_from_char_index(&self, char_index: usize) -> usize

fn clear(&mut self)

Clears all characters in this buffer

fn replace(&mut self, text: &str)

Replaces all contents of this string with text

fn take(&mut self) -> String

Clears all characters in this buffer and returns a string of the contents.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl TextBuffer for String

fn is_mutable(&self) -> bool

fn as_str(&self) -> &str

fn insert_text(&mut self, text: &str, char_index: usize) -> usize

fn delete_char_range(&mut self, char_range: Range<usize>)

fn clear(&mut self)

fn replace(&mut self, text: &str)

fn take(&mut self) -> String

impl<'a> TextBuffer for &'a str

Immutable view of a &str!

fn is_mutable(&self) -> bool

fn as_str(&self) -> &str

fn insert_text(&mut self, _text: &str, _ch_idx: usize) -> usize

fn delete_char_range(&mut self, _ch_range: Range<usize>)

Implementors