94 lines
2.4 KiB
Rust
94 lines
2.4 KiB
Rust
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#[cfg(not(feature = "std"))]
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use alloc::string::String;
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use crate::{Buffer, Cursor};
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#[cfg(feature = "swash")]
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use crate::Color;
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pub use self::editor::*;
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mod editor;
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#[cfg(feature = "syntect")]
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pub use self::syntect::*;
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#[cfg(feature = "syntect")]
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mod syntect;
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#[cfg(feature = "vi")]
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pub use self::vi::*;
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#[cfg(feature = "vi")]
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mod vi;
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/// An action to perform on an [`Editor`]
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#[derive(Clone, Copy, Debug, Eq, PartialEq)]
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pub enum Action {
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/// Move cursor to previous character ([Self::Left] in LTR, [Self::Right] in RTL)
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Previous,
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/// Move cursor to next character ([Self::Right] in LTR, [Self::Left] in RTL)
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Next,
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/// Move cursor left
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Left,
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/// Move cursor right
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Right,
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/// Move cursor up
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Up,
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/// Move cursor down
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Down,
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/// Move cursor to start of line
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Home,
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/// Move cursor to end of line
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End,
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/// Scroll up one page
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PageUp,
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/// Scroll down one page
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PageDown,
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/// Escape, clears selection
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Escape,
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/// Insert character at cursor
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Insert(char),
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/// Create new line
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Enter,
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/// Delete text behind cursor
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Backspace,
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/// Delete text in front of cursor
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Delete,
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/// Mouse click at specified position
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Click { x: i32, y: i32 },
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/// Mouse drag to specified position
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Drag { x: i32, y: i32 },
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/// Scroll specified number of lines
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Scroll { lines: i32 },
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}
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/// A trait to allow easy replacements of [`Editor`], like `SyntaxEditor`
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pub trait Edit<'a> {
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/// Get the internal [`Buffer`]
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fn buffer(&self) -> &Buffer<'a>;
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/// Get the internal [`Buffer`], mutably
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fn buffer_mut(&mut self) -> &mut Buffer<'a>;
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/// Get the current cursor position
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fn cursor(&self) -> Cursor;
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/// Get the current selection position
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fn select_opt(&self) -> Option<Cursor>;
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/// Shape lines until scroll, after adjusting scroll if the cursor moved
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fn shape_as_needed(&mut self);
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/// Copy selection
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fn copy_selection(&mut self) -> Option<String>;
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/// Delete selection, adjusting cursor and returning true if there was a selection
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// Also used by backspace, delete, insert, and enter when there is a selection
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fn delete_selection(&mut self) -> bool;
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/// Perform an [Action] on the editor
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fn action(&mut self, action: Action);
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/// Draw the editor
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#[cfg(feature = "swash")]
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fn draw<F>(&self, cache: &mut crate::SwashCache, color: Color, f: F)
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where F: FnMut(i32, i32, u32, u32, Color);
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}
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