71 lines
1.9 KiB
Rust
71 lines
1.9 KiB
Rust
// Copyright 2019 H<>ctor Ram<61>n, Iced contributors
|
||
// Copyright 2023 System76 <info@system76.com>
|
||
// SPDX-License-Identifier: MIT
|
||
|
||
use super::{cursor::Cursor, value::Value};
|
||
|
||
pub struct Editor<'a> {
|
||
value: &'a mut Value,
|
||
cursor: &'a mut Cursor,
|
||
}
|
||
|
||
impl<'a> Editor<'a> {
|
||
#[inline]
|
||
pub fn new(value: &'a mut Value, cursor: &'a mut Cursor) -> Editor<'a> {
|
||
Editor { value, cursor }
|
||
}
|
||
|
||
#[must_use]
|
||
#[inline]
|
||
pub fn contents(&self) -> String {
|
||
self.value.to_string()
|
||
}
|
||
|
||
pub fn insert(&mut self, character: char) {
|
||
if let Some((left, right)) = self.cursor.selection(self.value) {
|
||
self.cursor.move_left(self.value);
|
||
self.value.remove_many(left, right);
|
||
}
|
||
|
||
self.value.insert(self.cursor.end(self.value), character);
|
||
self.cursor.move_right(self.value);
|
||
}
|
||
|
||
pub fn paste(&mut self, content: Value) {
|
||
let length = content.len();
|
||
if let Some((left, right)) = self.cursor.selection(self.value) {
|
||
self.cursor.move_left(self.value);
|
||
self.value.remove_many(left, right);
|
||
}
|
||
|
||
self.value.insert_many(self.cursor.end(self.value), content);
|
||
|
||
self.cursor.move_right_by_amount(self.value, length);
|
||
}
|
||
|
||
pub fn backspace(&mut self) {
|
||
if let Some((start, end)) = self.cursor.selection(self.value) {
|
||
self.cursor.move_left(self.value);
|
||
self.value.remove_many(start, end);
|
||
} else {
|
||
let start = self.cursor.start(self.value);
|
||
|
||
if start > 0 {
|
||
self.cursor.move_left(self.value);
|
||
self.value.remove(start - 1);
|
||
}
|
||
}
|
||
}
|
||
|
||
pub fn delete(&mut self) {
|
||
if self.cursor.selection(self.value).is_some() {
|
||
self.backspace();
|
||
} else {
|
||
let end = self.cursor.end(self.value);
|
||
|
||
if end < self.value.len() {
|
||
self.value.remove(end);
|
||
}
|
||
}
|
||
}
|
||
}
|