cosmic/widget/text_input/
editor.rs

1// Copyright 2019 H�ctor Ram�n, Iced contributors
2// Copyright 2023 System76 <info@system76.com>
3// SPDX-License-Identifier: MIT
4
5use super::cursor::Cursor;
6use super::value::Value;
7
8pub struct Editor<'a> {
9    value: &'a mut Value,
10    cursor: &'a mut Cursor,
11}
12
13impl<'a> Editor<'a> {
14    #[inline]
15    pub fn new(value: &'a mut Value, cursor: &'a mut Cursor) -> Editor<'a> {
16        Editor { value, cursor }
17    }
18
19    #[must_use]
20    #[inline]
21    pub fn contents(&self) -> String {
22        self.value.to_string()
23    }
24
25    pub fn insert(&mut self, character: char) {
26        if let Some((left, right)) = self.cursor.selection(self.value) {
27            self.cursor.move_left(self.value);
28            self.value.remove_many(left, right);
29        }
30
31        self.value.insert(self.cursor.end(self.value), character);
32        self.cursor.move_right(self.value);
33    }
34
35    pub fn paste(&mut self, content: Value) {
36        let length = content.len();
37        if let Some((left, right)) = self.cursor.selection(self.value) {
38            self.cursor.move_left(self.value);
39            self.value.remove_many(left, right);
40        }
41
42        self.value.insert_many(self.cursor.end(self.value), content);
43
44        self.cursor.move_right_by_amount(self.value, length);
45    }
46
47    pub fn backspace(&mut self) {
48        if let Some((start, end)) = self.cursor.selection(self.value) {
49            self.cursor.move_left(self.value);
50            self.value.remove_many(start, end);
51        } else {
52            let start = self.cursor.start(self.value);
53
54            if start > 0 {
55                self.cursor.move_left(self.value);
56                self.value.remove(start - 1);
57            }
58        }
59    }
60
61    pub fn delete(&mut self) {
62        if self.cursor.selection(self.value).is_some() {
63            self.backspace();
64        } else {
65            let end = self.cursor.end(self.value);
66
67            if end < self.value.len() {
68                self.value.remove(end);
69            }
70        }
71    }
72}
cosmic/widget/text_input/editor.rs

cosmic/widget/text_input/
editor.rs
