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tidy up the line editor interface and docs a bit

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This commit is contained in:
Wez Furlong 2019-05-26 22:52:07 -07:00
parent 5dd0e39b05
commit b1af0cefbd
2 changed files with 42 additions and 30 deletions
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15
termwiz/examples/line_editor.rs
View File

@ -1,17 +1,8 @@
use failure::{err_msg, Fallible};
use termwiz::caps::{Capabilities, ProbeHintsBuilder};
use termwiz::lineedit::LineEditor;
use termwiz::terminal::new_terminal;
use failure::Fallible;
use termwiz::lineedit::line_editor;
fn main() -> Fallible<()> {
// Disable mouse input in the line editor
let hints = ProbeHintsBuilder::new_from_env()
.mouse_reporting(Some(false))
.build()
.map_err(err_msg)?;
let caps = Capabilities::new_with_hints(hints)?;
let terminal = new_terminal(caps)?;
let mut editor = LineEditor::new(terminal);
let mut editor = line_editor()?;
let line = editor.read_line()?;
println!("read line: {}", line);

57
termwiz/src/lineedit/mod.rs
View File

@ -1,24 +1,12 @@
//! The `LineEditor` struct provides line editing facilities similar
//! to those in the unix shell.
//! It is recommended that a direct `Terminal` instance be used to
//! construct the `LineEditor` (rather than a `BufferedTerminal`),
//! and to disable mouse input:
//!
//! ```
//! use failure::{err_msg, Fallible};
//! use termwiz::caps::{Capabilities, ProbeHintsBuilder};
//! use termwiz::lineedit::LineEditor;
//! use termwiz::terminal::new_terminal;
//! use failure::Fallible;
//! use termwiz::lineedit::line_editor;
//!
//! fn main() -> Fallible<()> {
//! // Disable mouse input in the line editor
//! let hints = ProbeHintsBuilder::new_from_env()
//! .mouse_reporting(Some(false))
//! .build()
//! .map_err(err_msg)?;
//! let caps = Capabilities::new_with_hints(hints)?;
//! let terminal = new_terminal(caps)?;
//! let mut editor = LineEditor::new(terminal);
//! let mut editor = line_editor()?;
//!
//! let line = editor.read_line()?;
//! println!("read line: {}", line);
@ -39,13 +27,29 @@
//! Ctrl-F, Right | Move cursor one grapheme to the right
//! Ctrl-H, Backspace | Delete the grapheme to the left of the cursor
//! Ctrl-J, Ctrl-M, Enter | Finish line editing and accept the current line
use crate::caps::{Capabilities, ProbeHintsBuilder};
use crate::input::{InputEvent, KeyCode, KeyEvent, Modifiers};
use crate::surface::{Change, Position};
use crate::terminal::Terminal;
use failure::Fallible;
use crate::terminal::{new_terminal, Terminal};
use failure::{err_msg, Fallible};
use unicode_segmentation::GraphemeCursor;
use unicode_width::UnicodeWidthStr;
/// The `LineEditor` struct provides line editing facilities similar
/// to those in the unix shell.
/// ```
/// use failure::Fallible;
/// use termwiz::lineedit::line_editor;
///
/// fn main() -> Fallible<()> {
/// let mut editor = line_editor()?;
///
/// let line = editor.read_line()?;
/// println!("read line: {}", line);
///
/// Ok(())
/// }
/// ```
pub struct LineEditor<T: Terminal> {
terminal: T,
line: String,
@ -56,7 +60,12 @@ pub struct LineEditor<T: Terminal> {
impl<T: Terminal> LineEditor<T> {
/// Create a new line editor.
/// It is recommended that the terminal be created this way:
/// In most cases, you'll want to use the `line_editor` function,
/// because it creates a `Terminal` instance with the recommended
/// settings, but if you need to decompose that for some reason,
/// this snippet shows the recommended way to create a line
/// editor:
///
/// ```
/// // Disable mouse input in the line editor
/// let hints = ProbeHintsBuilder::new_from_env()
@ -215,3 +224,15 @@ impl<T: Terminal> LineEditor<T> {
Ok(self.line.clone())
}
}
/// Create a `Terminal` with the recommended settings, and use that
/// to create a `LineEditor` instance.
pub fn line_editor() -> Fallible<LineEditor<impl Terminal>> {
let hints = ProbeHintsBuilder::new_from_env()
.mouse_reporting(Some(false))
.build()
.map_err(err_msg)?;
let caps = Capabilities::new_with_hints(hints)?;
let terminal = new_terminal(caps)?;
Ok(LineEditor::new(terminal))
}