tutorials/hecto
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This commit is contained in:
Timothy Warren 2021-03-12 12:00:39 -05:00
parent 6efb73ff2b
commit 0d3ed442e4
1 changed files with 18 additions and 4 deletions
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22
src/editor.rs
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@ -161,7 +161,7 @@ impl Editor {
fn save(&mut self) {
if self.document.file_name.is_none() {
let new_name = self.prompt("Save as: ").unwrap_or(None);
let new_name = self.prompt("Save as: ", |_,_,_| {}).unwrap_or(None);
if new_name.is_none() {
self.status_message = StatusMessage::from("Save aborted.");
return;
@ -196,7 +196,15 @@ impl Editor {
},
Key::Ctrl('s') => self.save(),
Key::Ctrl('f') => {
if let Some(query) = self.prompt("Search: ").unwrap_or(None) {
if let Some(query) = self
.prompt("Search: ", |editor, _, query| {
if let Some(position) = editor.document.find(&query) {
editor.cursor_position = position;
editor.scroll();
}
})
.unwrap_or(None)
{
if let Some(position) = self.document.find(&query[..]) {
self.cursor_position = position;
} else {
@ -237,14 +245,18 @@ impl Editor {
Ok(())
}
fn prompt(&mut self, prompt: &str) -> Result<Option<String>, std::io::Error> {
fn prompt<C>(&mut self, prompt: &str, callback: C) -> Result<Option<String>, std::io::Error>
where
C: Fn(&mut Self, Key, &String),
{
let mut result = String::new();
loop {
self.status_message = StatusMessage::from(format!("{}{}", prompt, result));
self.refresh_screen()?;
match Terminal::read_key()? {
let key = Terminal::read_key()?;
match key {
Key::Backspace => result.truncate(result.len().saturating_sub(1)),
Key::Char('\n') => break,
Key::Char(c) => {
@ -258,6 +270,8 @@ impl Editor {
}
_ => (),
}
callback(self, key, &result);
}
self.status_message = StatusMessage::default();