implement FromIterator for TextArea

README.md

@@ -161,6 +161,14 @@ let mut text: String = ...;
 let mut textarea = TextARea::from(text.lines());
 ```
 
+`TextArea` also implements `FromIterator<impl Into<String>>`. `Iterator::collect()` can collect strings as an editor
+instance. This allows to create `TextArea` reading lines from file efficiently using `io::BufReader`.
+
+```rust
+let file = fs::File::open(path)?;
+let mut textarea: TextArea = io::BufReader::new(file).lines().collect::<io::Result<_>>()?;
+```
+
 ### Get text contents from `TextArea`
 
 `TextArea::lines()` returns text lines as `&[String]`. It borrows text contents temporarily.

src/textarea.rs

@@ -77,6 +77,26 @@ where
     }
 }
 
+/// Collect line texts from iterator as [`TextArea`]. It is useful when creating a textarea with text read from a file.
+/// [`Iterator::collect`] handles errors which may happen on reading each lines. The following example reads text from
+/// a file efficiently line-by-line.
+/// ```no_run
+/// use std::fs;
+/// use std::io::{self, BufRead};
+/// use std::path::Path;
+/// use tui_textarea::TextArea;
+///
+/// fn read_from_file<'a>(path: impl AsRef<Path>) -> io::Result<TextArea<'a>> {
+///     let file = fs::File::open(path.as_ref())?;
+///     io::BufReader::new(file).lines().collect()
+/// }
+/// ```
+impl<'a, S: Into<String>> FromIterator<S> for TextArea<'a> {
+    fn from_iter<I: IntoIterator<Item = S>>(iter: I) -> Self {
+        iter.into()
+    }
+}
+
 impl<'a> Default for TextArea<'a> {
     /// Create [`TextArea`] instance with empty text content.
     /// ```