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Create text_input::Editor to hold editing logic

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This commit is contained in:
Héctor Ramón Jiménez 2020-03-24 20:51:22 +01:00
parent 28382a47d3
commit 6c47a40730
2 changed files with 103 additions and 55 deletions
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78
native/src/widget/text_input.rs
View File

@ -4,6 +4,7 @@
//!
//! [`TextInput`]: struct.TextInput.html
//! [`State`]: struct.State.html
mod editor;
mod value;
pub mod cursor;
@ -11,6 +12,8 @@ pub mod cursor;
pub use cursor::Cursor;
pub use value::Value;
use editor::Editor;
use crate::{
input::{
keyboard,
@ -333,18 +336,12 @@ where
&& self.state.is_pasting.is_none()
&& !c.is_control() =>
{
match self.state.cursor.selection() {
Some((left, right)) => {
self.value.remove_many(left, right);
self.state.cursor.move_left(&self.value);
}
_ => (),
}
let mut editor =
Editor::new(&mut self.value, &mut self.state.cursor);
self.value.insert(self.state.cursor.end(&self.value), c);
self.state.cursor.move_right(&self.value);
editor.insert(c);
let message = (self.on_change)(self.value.to_string());
let message = (self.on_change)(editor.contents());
messages.push(message);
}
Event::Keyboard(keyboard::Event::Input {
@ -358,39 +355,21 @@ where
}
}
keyboard::KeyCode::Backspace => {
match self.state.cursor.selection() {
Some((start, end)) => {
self.value.remove_many(start, end);
self.state.cursor.move_left(&self.value);
}
None => {
let start = self.state.cursor.start(&self.value);
let mut editor =
Editor::new(&mut self.value, &mut self.state.cursor);
if start > 0 {
self.state.cursor.move_left(&self.value);
editor.backspace();
let _ = self.value.remove(start - 1);
}
}
}
let message = (self.on_change)(self.value.to_string());
let message = (self.on_change)(editor.contents());
messages.push(message);
}
keyboard::KeyCode::Delete => {
match self.state.cursor.selection() {
Some((start, end)) => {
self.value.remove_many(start, end);
self.state.cursor.move_left(&self.value);
}
None => {
let end = self.state.cursor.end(&self.value);
let mut editor =
Editor::new(&mut self.value, &mut self.state.cursor);
if end < self.value.len() {
let _ = self.value.remove(end);
}
}
}
let message = (self.on_change)(self.value.to_string());
editor.delete();
let message = (self.on_change)(editor.contents());
messages.push(message);
}
keyboard::KeyCode::Left => {
@ -462,28 +441,17 @@ where
}
};
match self.state.cursor.selection() {
Some((left, right)) => {
self.value.remove_many(left, right);
self.state.cursor.move_left(&self.value);
}
_ => (),
}
self.value.insert_many(
self.state.cursor.end(&self.value),
content.clone(),
let mut editor = Editor::new(
&mut self.value,
&mut self.state.cursor,
);
self.state.cursor.move_right_by_amount(
&self.value,
content.len(),
);
self.state.is_pasting = Some(content);
editor.paste(content.clone());
let message =
(self.on_change)(self.value.to_string());
let message = (self.on_change)(editor.contents());
messages.push(message);
self.state.is_pasting = Some(content);
}
} else {
self.state.is_pasting = None;

80
native/src/widget/text_input/editor.rs Normal file
View File

@ -0,0 +1,80 @@
use crate::text_input::{Cursor, Value};
pub struct Editor<'a> {
value: &'a mut Value,
cursor: &'a mut Cursor,
}
impl<'a> Editor<'a> {
pub fn new(value: &'a mut Value, cursor: &'a mut Cursor) -> Editor<'a> {
Editor { value, cursor }
}
pub fn contents(&self) -> String {
self.value.to_string()
}
pub fn insert(&mut self, character: char) {
match self.cursor.selection() {
Some((left, right)) => {
self.value.remove_many(left, right);
self.cursor.move_left(&self.value);
}
_ => (),
}
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();
match self.cursor.selection() {
Some((left, right)) => {
self.value.remove_many(left, right);
self.cursor.move_left(&self.value);
}
_ => (),
}
self.value
.insert_many(self.cursor.end(&self.value), content);
self.cursor.move_right_by_amount(&self.value, length);
}
pub fn backspace(&mut self) {
match self.cursor.selection() {
Some((start, end)) => {
self.value.remove_many(start, end);
self.cursor.move_left(&self.value);
}
None => {
let start = self.cursor.start(&self.value);
if start > 0 {
self.cursor.move_left(&self.value);
let _ = self.value.remove(start - 1);
}
}
}
}
pub fn delete(&mut self) {
match self.cursor.selection() {
Some((start, end)) => {
self.value.remove_many(start, end);
self.cursor.move_left(&self.value);
}
None => {
let end = self.cursor.end(&self.value);
if end < self.value.len() {
let _ = self.value.remove(end);
}
}
}
}
}