Trait Editor

pub trait Editor: Sized + Default {
    type Font: Copy + PartialEq + Default;

    // Required methods
    fn with_text(text: &str) -> Self;
    fn is_empty(&self) -> bool;
    fn cursor(&self) -> Cursor;
    fn cursor_position(&self) -> (usize, usize);
    fn selection(&self) -> Option<String>;
    fn line(&self, index: usize) -> Option<&str>;
    fn line_count(&self) -> usize;
    fn perform(&mut self, action: Action);
    fn bounds(&self) -> Size;
    fn min_bounds(&self) -> Size;
    fn update(
        &mut self,
        new_bounds: Size,
        new_font: Self::Font,
        new_size: Pixels,
        new_line_height: LineHeight,
        new_wrapping: Wrapping,
        new_highlighter: &mut impl Highlighter,
    );
    fn highlight<H>(
        &mut self,
        font: Self::Font,
        highlighter: &mut H,
        format_highlight: impl Fn(&<H as Highlighter>::Highlight) -> Format<Self::Font>,
    )
       where H: Highlighter;
}

Available on crate feature advanced only.

A component that can be used by widgets to edit multi-line text.

Required Associated Types

type Font: Copy + PartialEq + Default

The font of the Editor.

Required Methods

fn with_text(text: &str) -> Self

Creates a new Editor laid out with the given text.

fn is_empty(&self) -> bool

Returns true if the Editor has no contents.

fn cursor(&self) -> Cursor

Returns the current Cursor of the Editor.

fn cursor_position(&self) -> (usize, usize)

Returns the current cursor position of the Editor.

Line and column, respectively.

fn selection(&self) -> Option<String>

Returns the current selected text of the Editor.

fn line(&self, index: usize) -> Option<&str>

Returns the text of the given line in the Editor, if it exists.

fn line_count(&self) -> usize

Returns the amount of lines in the Editor.

fn perform(&mut self, action: Action)

Performs an Action on the Editor.

fn bounds(&self) -> Size

Returns the current boundaries of the Editor.

fn min_bounds(&self) -> Size

Returns the minimum boundaries to fit the current contents of the Editor.

fn update( &mut self, new_bounds: Size, new_font: Self::Font, new_size: Pixels, new_line_height: LineHeight, new_wrapping: Wrapping, new_highlighter: &mut impl Highlighter, )

Updates the Editor with some new attributes.

fn highlight<H>( &mut self, font: Self::Font, highlighter: &mut H, format_highlight: impl Fn(&<H as Highlighter>::Highlight) -> Format<Self::Font>, )

where H: Highlighter,

Runs a text Highlighter in the Editor.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Editor for ()

type Font = Font

fn with_text(_text: &str)

fn is_empty(&self) -> bool

fn cursor(&self) -> Cursor

fn cursor_position(&self) -> (usize, usize)

fn selection(&self) -> Option<String>

fn line(&self, _index: usize) -> Option<&str>

fn line_count(&self) -> usize

fn perform(&mut self, _action: Action)

fn bounds(&self) -> Size

fn min_bounds(&self) -> Size

fn update( &mut self, _new_bounds: Size, _new_font: <() as Editor>::Font, _new_size: Pixels, _new_line_height: LineHeight, _new_wrapping: Wrapping, _new_highlighter: &mut impl Highlighter, )

fn highlight<H>( &mut self, _font: <() as Editor>::Font, _highlighter: &mut H, _format_highlight: impl Fn(&<H as Highlighter>::Highlight) -> Format<<() as Editor>::Font>, )

where H: Highlighter,

impl Editor for Editor

type Font = Font

fn with_text(text: &str) -> Editor

fn is_empty(&self) -> bool

fn line(&self, index: usize) -> Option<&str>

fn line_count(&self) -> usize

fn selection(&self) -> Option<String>

fn cursor(&self) -> Cursor

fn cursor_position(&self) -> (usize, usize)

fn perform(&mut self, action: Action)

fn bounds(&self) -> Size

fn min_bounds(&self) -> Size

fn update( &mut self, new_bounds: Size, new_font: Font, new_size: Pixels, new_line_height: LineHeight, new_wrapping: Wrapping, new_highlighter: &mut impl Highlighter, )

fn highlight<H>( &mut self, font: <Editor as Editor>::Font, highlighter: &mut H, format_highlight: impl Fn(&<H as Highlighter>::Highlight) -> Format<<Editor as Editor>::Font>, )

where H: Highlighter,

Implementors